JP2017067539A - Biological information measurement system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a biological information measurement system capable of detecting odorous gas in defecation gas with sufficient accuracy using a commonly used gas sensor.SOLUTION: The present invention relates to a biological information measurement system (1) configured to measure physical health of a subject on the basis of defecation gas, the system including: a suction device (18) for sucking gas from inside a bowl; a gas detection device (20) having a gas sensor that reacts to odorous gas and hydrogen gas contained in defecation gas; a control device; a data analyzer (60) configured to analyze physical health of a subject based on detection data; and an output device (68) for outputting an analysis result. A detection unit of the gas sensor detects gas at a redox temperature, at which the detection unit reacts to hydrogen gas through redox reaction, and at a reduced redox temperature, at which redox reaction to hydrogen gas decreases and sensitivity to odorous gas relatively increases. The data analyzer derives odorous gas content or concentration based on detection data from the gas sensor.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a biological information measurement system, and more particularly to a biological information measurement system that measures the physical condition of a subject based on defecation gas discharged into a bowl of a toilet bowl installed in a toilet room.

  In recent years, with the advancement of medical technology, the mortality rate due to cancer has become extremely low due to the diagnostic technology for major diseases such as cancer and the technological advancement of cancer treatment itself. However, it is a burden for patients to go to the hospital to receive regular diagnosis for cancer prevention. For this reason, in reality, there are many patients who come to the hospital after realizing a poor physical condition, and unfortunately, there are still many people who get cancer. In addition, a practical device for suppressing the occurrence of cancer has not been developed yet, and in reality, it cannot be said to be sufficient for realizing cancer prevention.

  In view of such a situation, the present inventors have made a device that can more easily diagnose major illnesses such as cancer at home without going to the hospital, and can really prevent major illnesses or realize early treatment. He had a strong desire to manufacture the equipment required by the market, and he had been researching for a long time.

  Until now, the applicant has collected the defecation gas that is mounted on the toilet seat of a Western-style toilet and is discharged into the bowl when the subject defecates, and based on the concentration of carbon dioxide contained in the defecation gas, A device for obtaining the amount of excreted stool (see Patent Document 1) and a deodorizing device incorporated in the toilet seat of the flush toilet are sucked with a deodorizing device that is combined with the subject's stool, and the carbon dioxide concentration of the sucked gas is determined by carbon dioxide. An apparatus (see Patent Document 2) that estimates the intestinal state of a subject based on a gas sensor and based on the measured carbon dioxide concentration has been developed. However, these devices only estimate the current state of the intestine, and have not achieved the inventor's purpose of easily diagnosing a major disease such as cancer and grasping the risk status thereof. Furthermore, a fart detection device (Patent Document 3) is also known in which a gas sensor is disposed so as to come into contact with the air in the vicinity of a human excretion portion, and a fart is detected based on the peak value of the gas sensor output. In this fart detection device, the fart of the patient is collected by pulling out the tube from the excretion part in the diaper or underwear of the patient sleeping on the bed and sucking air with a suction pump. Furthermore, this fart detection device distinguishes farting from urination based on the half-value width of the peak of the gas sensor output, and the doctor confirms whether a fart has come out after cecal surgery or detects when to change diapers It is something to try. JP 2014-160049 A (Patent Document 4) includes a sensor for measuring methyl mercaptan gas from a soot component released by a subject, a calculation unit for calculating a methyl mercaptan gas concentration obtained from the sensor, A portable colorectal cancer risk measuring device for estimating the risk of developing colorectal cancer, comprising a display unit, is described.

  In developing a device capable of diagnosing such a major disease such as cancer, it has been known in recent years that there is a correlation between a disease of colon cancer and gas components in the intestine contained in a fart or defecation. ing. Specifically, colon cancer patients have more methyl mercaptan gas containing sulfur components in gas components in the intestine than healthy individuals.

Japanese Patent No. 5131646 Patent No. 5019267 JP 2003-90812 A JP 2014-160049

  The gas component in the intestine is discharged as a fart or defecation gas together with the stool during defecation. Accordingly, the inventors measured the specific gas such as fart discharged during defecation and methyl mercaptan gas in the defecation gas as described in the Nihon Keizai Shimbun on January 5, 2015. I thought that I could find cancer, and continued my research. However, a measuring apparatus that can accurately measure only a specific gas such as methyl mercaptan gas is very expensive and large. In addition, the amount of methyl mercaptan gas contained in the defecation gas is very small, and it is very difficult to measure because it becomes a minute amount at the stage before getting cancer. The inventors faced the problem that it was not very realistic to install it in a toilet device and spread it as a consumer product, both in terms of cost and size.

  However, the inventors want to reduce the number of people who become seriously ill such as cancer. To that end, we continued research with the very strong desire that general consumers need to make a device that can be easily purchased and diagnosed easily at home, and finally found a technical solution for its realization. is there.

The object of the present invention is to prevent general consumers from easily purchasing and measuring serious illnesses such as cancer by measuring fecal gas at home, or going to a hospital in a mild condition for treatment. It is an object of the present invention to provide a biological information measurement system with high practicality that can be urged to be received and is truly required by the market.
Another object of the present invention is to provide a biological information measurement system that can detect odorous gas in defecation gas with sufficient accuracy by using a generally inexpensive gas sensor. .

  In order to solve the above-described problems, the present invention provides a biological information measurement system that measures the physical condition of a subject based on defecation gas discharged into a bowl of a toilet bowl installed in a toilet room. A suction device that sucks the gas in the bowl from which the defecation gas has been discharged, and a gas detection device that includes a gas sensor that reacts to odorous gas and hydrogen gas containing sulfur components contained in the defecation gas sucked by the suction device. A control device that controls the suction device and the gas detection device, a data analysis device that analyzes the physical condition of the subject based on the detection data detected by the gas detection device, and an output device that outputs an analysis result by the data analysis device, The gas sensor is configured to detect gas in a state heated to a predetermined temperature, and the detection unit of the gas sensor performs oxidation-reduction reaction. The gas is detected at the oxidation-reduction temperature that reacts to the raw gas and the oxidation-reduction temperature at which the oxidation-reduction reaction to hydrogen gas decreases and the sensitivity to odorous gas relatively increases. The content or concentration of the odorous gas is obtained based on the detection data.

  Conventionally, there has been no actual device for confirming whether a major illness such as cancer, or confirmation for the prevention of a major illness exists other than diagnosis at a hospital. On the other hand, according to the present invention, general consumers can easily purchase and measure at home. Furthermore, since the defecation gas discharged during defecation is measured, the subject does not have to bother to perform a new measurement act, and simply performing the defecation act normally can lead to serious diseases such as cancer. It is possible to prevent or to go to the hospital for treatment in a mild condition. As described above, according to the present invention, it is possible to realize an apparatus that is truly required from the market and to provide a highly practical diagnostic system.

  Here, before specifically explaining the effects of the present invention, a technical concept that enables a system that can be spread as a consumer product in a general household will be described. The key points lie in the idea of reversal and the knowledge of effective divestiture using the characteristics of major diseases such as cancer.

  Specifically, one of the key points of the system of the present invention is the idea of reversal that a device installed in each home does not diagnose a major illness such as cancer. In other words, subjects who are general consumers do not want to know that they have cancer, but recognize that the risk of cancer has increased at the stage before cancer (this stage is referred to as non-disease). I really want to improve my future life so that I don't get lost. In other words, the device required for general households is thought to be valuable only in that a healthy person can accurately grasp cancer risk and improve physical condition so as not to get cancer.

  Next, one of the key points of the system of the present invention is a device for diagnosing a specific type of cancer such as a specific rectal cancer, or a device capable of diagnosing an increased risk of a specific type of cancer. It is in the dilemma that it is not. This is because the subject is not worried about a particular type of cancer, such as rectal cancer, but is worried about any cancer. Therefore, the inventors do not have a commercial value unless a specific type of cancer is diagnosed, and think that there is no need for accuracy to specify the type of cancer, and can specify the type of cancer. It was decided that such measurement accuracy was unnecessary.

  Next, one of the key points of the system of the present invention is the divisor that diagnosis accuracy for each defecation may be extremely low. This is based on the idea that cancer is a disease that progresses over a long period of several years, and we realize that the chance of diagnosis extends over a long period of years. Therefore, if it is positioned as a device for reducing the risk that healthy people will get cancer, it will be noticed that there is virtually no problem even if the diagnostic accuracy is low once, and it is effective based on this. One of the keys is the regular cleaving.

Hereinafter, the specific effect of the system based on this invention constructed | assembled based on these knowledge and effective crevice is demonstrated.
In the present invention, because the subject's physical condition is analyzed by measuring the defecation gas discharged into the bowl of the toilet bowl, there is no need for the subject to bother to perform the measurement act, and the stool is simply performed normally. Diagnosis can be made only with this. In addition, since there is no hassle at all, the subject is not burdened, and measurement can be continued for a long period of time, so that information on changes in health status and a situation in which cancer risk is increased can be obtained with certainty.

Further, in the present invention, a sensor that reacts widely with odorous gases other than methyl mercaptan gas in the defecation gas is used without using a sensor that measures methyl mercaptan gas at a pinpoint. When a sensor that measures methyl mercaptan gas in a pinpoint manner is used, it can be reliably detected that there is a correlation between the amount of methyl mercaptan gas and colorectal cancer, and the risk of cancer has increased. Is definitely known from the amount. However, this increases the risk of cancer to some extent, and if the amount of methyl mercaptan gas does not increase, it cannot be determined that the risk of cancer is increased, and is not suitable for the present invention for the purpose of preventing cancer. I realized that.
On the other hand, in the case of a sensor that reacts widely with odorous gas, it can be detected not only from an increase in cancer risk but also from a poor physical condition. Specifically, in a state where the risk of cancer has increased, a very strong odorous gas containing a sulfur component such as methyl mercaptan gas or hydrogen sulfide increases. And if it is a sensor which reacts widely with odorous gas, such an increase in gas can be detected without fail. In addition, as will be described later, although the amount of odorous gas may temporarily increase due to daily physical condition changes, in the case of cancer, an emergency that contains sulfur components such as methyl mercaptan gas and hydrogen sulfide. The state where the strong odor gas became strong lasts for a long time. For this reason, even if a sensor that reacts widely with odorous gases other than methyl mercaptan gas in defecation gas is used, if the gas amount is high over a long period of time, the risk of cancer is high and the risk of cancer increases. It can be determined that Thus, a sensor that also reacts widely with odorous gases functions in this respect in the same manner as a sensor that measures methyl mercaptan gas pinpoint.

Further, in the present invention, a general semiconductor gas sensor that reacts not only with methyl mercaptan gas but also with odorous gas in stool gas other than methyl mercaptan gas is used, and only the amount of odorous gas in the stool gas is known. Thus, the amount of methyl mercaptan gas cannot be measured, and the cancer state cannot be accurately identified. However, the inventors use a gas detection device that reacts not only with methyl mercaptan gas but also with odorous gas in defecation gas other than methyl mercaptan gas, so that healthy people have an increased risk of cancer. It has been found that it functions effectively as a device for preventing the risk of cancer and the risk of developing cancer. Specifically, a healthy person has a low total amount of odorous gases other than methyl mercaptan gas and methyl mercaptan gas. On the other hand, the total amount of odorous gases other than methyl mercaptan gas and methyl mercaptan gas temporarily increases due to deterioration of the intestinal environment, as well as cancer. Specifically, the deterioration of the intestinal environment is a deterioration of the intestinal environment due to factors such as excessive constipation, types of meals, lack of sleep, excessive drinking and overeating, excessive drinking, and excessive stress. However, all these factors are bad lifestyle habits. Cancer develops after bad lifestyle habits, but until now, even if the risk of cancer has risen, there is no way to recognize it, and as a matter of fact, many people now have a bad life with a good belief that they are all right Continuing customs.
As described above, when bad lifestyle habits as described above are performed, all or any of the odorous gases in the defecation gas such as methyl mercaptan, hydrogen sulfide, acetic acid, trimethylamine, and ammonia increases. In contrast, the present invention is based on detection data of a gas detection device that detects not only methyl mercaptan gas but also odorous gas in stool gas other than methyl mercaptan gas such as hydrogen sulfide, acetic acid, trimethylamine, and ammonia. Is being analyzed. For this reason, the analysis results based on the total amount of odorous gas in the defecation gas reflect the results of the subject's poor physical condition and bad lifestyle habits, and the analysis results are based on physical conditions and lifestyle habits that increase the risk of such cancer. It can be used as an index based on objective data for improving cancer, that is, as an effective index for maintaining health and reducing the risk of developing cancer. For the purpose of improving lifestyle and suppressing cancer risk It has been found that it is an excellent effect that works extremely effectively.
As described above, according to the present invention, methyl mercaptan gas and odorous gas other than methyl mercaptan gas are measured, so that the cancer risk is in an increased state, and such a state is continued for a long time. The measurement which can notify a test subject of the suitable alarm which will become cancer is attained. The inventors have found a suitable finding for the purpose of reducing the number of people who become cancerous by the so-called reversal idea.
Furthermore, according to the present invention, since a general semiconductor gas sensor that reacts widely with not only methyl mercaptan gas but also odorous gases other than methyl mercaptan gas is used, the apparatus can be manufactured at low cost, and as a consumer product It became possible to provide. This makes it possible for the subject to easily diagnose at home, prevent a serious illness such as cancer from occurring, or to promptly go to the hospital and receive treatment in a mild condition. It was able to meet the requirements sufficiently.

  As described above, some semiconductor gas sensors that use a widely used reduction reaction can detect odorous gas, but these sensors also react with hydrogen gas, which is a reducing gas. Resulting in. Here, the concentration of odorous gas such as methyl mercaptan gas contained in the defecation gas is on the order of several tens to several hundreds ppb even when the concentration is high, whereas the concentration of hydrogen gas is on the order of several hundred ppm. There is a density difference of 1000 to 10000 times. Therefore, when odorous gas is used as a detection target, the presence of hydrogen gas contained in the defecation gas becomes a very large noise source for measurement. According to the present invention configured as described above, the gas sensor detects the gas at the oxidation-reduction temperature at which the oxidation-reduction reaction with respect to the hydrogen gas is reduced and the sensitivity with respect to the odorous gas is relatively increased. Even in an environment where there are extremely many hydrogen gas components, odorous gas can be detected with sufficient accuracy using a general gas sensor. That is, the gas component contained in the defecation gas and the concentration of each component vary depending on the subject and the physical condition thereof, but the gas component contained in the defecation gas and the concentration thereof are limited to a predetermined range. This has been clarified by the present inventors' research. For this reason, as long as the gas component of the defecation gas is detected, the temperature of the detection unit is set to a redox reduction temperature at which the redox reaction with respect to hydrogen gas decreases and the sensitivity with respect to odorous gas relatively increases. Thus, the present inventors have found that the content or concentration of the odorous gas can be obtained with sufficient accuracy.

  In the present invention, preferably, the gas sensor is made of a material that reacts with hydrogen gas and odorous gas, and is configured to react with hydrogen gas and with odorous gas while being heated to a redox reduction temperature. Has a second detector that is made of a material that does not react or is less likely to react with odorous gas than the first detector, and is heated to a redox temperature higher than the redox lowering temperature.

  According to the present invention configured as described above, the first detection unit heated to the oxidation-reduction temperature is made of a material different from the second detection unit heated to the oxidation-reduction temperature. A detection unit having high sensitivity to odorous gas and low sensitivity to hydrogen gas can be easily configured.

  In the present invention, preferably, a subject identification device for identifying a subject who uses a toilet, and a storage device that stores detection data detected by the gas detection device for each subject identified by the subject identification device. And the data analysis device is based on the first index based on the detection data of the odorous gas stored in the storage device, and the detection data of the hydrogen gas, carbon dioxide gas, or methane gas which are health gas A relationship with the second index is obtained, and the physical condition of the subject is analyzed based on the change tendency of the obtained relationship over time in a plurality of defecation actions.

  According to the present invention configured as described above, the relationship between the first index based on the odorous gas and the second index based on the health-related gas is based on a tendency of change over time in a plurality of defecation actions. Analyze the subject's physical condition. As a result, it is sufficient to understand the relative relationship between odorous gas and health gas for physical condition analysis, and since high accuracy is not required, a general gas sensor that also reacts with hydrogen gas is used. The physical condition of the subject can be analyzed.

  In the present invention, it is preferable that the control device lowers the temperature of the first detection unit to a temperature lower than the oxidation reduction reduction temperature when gas detection by the gas detection device is not performed.

  In the first detection unit that performs measurement at the oxidation-reduction temperature, the odorous gas containing the accumulated sulfur component accumulates on the detection unit without being completely burned, and if this is accumulated, it becomes a noise source for the measurement. Detection accuracy is reduced. According to the present invention configured as described above, when the gas detection is not performed, the temperature of the first detection unit is lowered to a temperature lower than the redox reduction temperature, so that the combustion reaction occurs on the detection unit. The generation of deposits due to incomplete combustion is suppressed. For this reason, the production | generation of the deposit in the longest waiting period can be suppressed, and the fall of a measurement precision can fully be suppressed.

  In the present invention, preferably, when the gas detection by the gas detection device is not performed, the control device heats the temperature of the first detection unit to a temperature higher than the oxidation-reduction lowering temperature to cause the first detection unit to move. It is configured to perform sensor cleaning for cleaning.

  In the present invention, since the temperature of the first detection unit is measured as the oxidation-reduction temperature, the odorous gas component is adsorbed on the detection unit during the measurement, and this is easily accumulated without being completely burned, It becomes a noise source in the next measurement. According to the present invention configured as described above, the sensor cleaning is performed to heat the temperature of the first detection unit to a temperature higher than the oxidation-reduction temperature, so that the accumulated adsorbate is effectively removed. And generation of noise can be suppressed.

  In this invention, Preferably, it has an entrance detection sensor which detects a test subject's entrance into a toilet room further, and a control apparatus performs sensor cleaning after a test subject's entrance, before gas detection is started.

  In the present invention, the accumulation of odorous gas components is suppressed by lowering the temperature of the first detection unit during standby, but if the temperature is lowered too much, the detection unit is oxidized / reduced after the subject enters the room. It takes time to raise the temperature to a lower temperature, and physical condition measurement cannot be performed smoothly. For this reason, even during standby, it is not possible to completely prevent the odorous gas component from being deposited on the first detection unit. According to the present invention configured as described above, the sensor cleaning is performed after the subject enters the room and before the gas detection is started. Therefore, the measurement accuracy can be sufficiently lowered while enabling a smooth physical condition measurement. Can be suppressed. In addition, during standby, the temperature is lowered and the accumulation of odorous gas components is suppressed, so that sufficient cleaning can be performed in a short time before the start of gas detection.

In the present invention, it is preferable that the apparatus further includes a contact time extending device that extends a time during which the defecation gas sucked by the suction device contacts the first detection unit.
In the present invention, gas detection is performed by setting the temperature of the first detection unit to the redox reduction temperature. However, if measurement is performed with the temperature of the detection unit being a temperature at which the oxidation-reduction reaction decreases, the first detection unit is detected. Responsiveness decreases. According to the present invention configured as described above, the contact time extending device extends the time during which the defecation gas contacts the first detection unit, so even if the response of the detection unit is reduced. It becomes possible to sufficiently detect a trace amount of odorous gas in the defecation gas.

  In the present invention, preferably, the contact time extending device is a storage device for storing the defecation gas sucked into the space in which the first detection unit is disposed for a predetermined time, or the sucked defecation gas is the first detection unit. Is a circulation device that circulates in the flow path in which is disposed.

  According to the present invention configured as described above, the contact time is extended by the storage device that stores the defecation gas for a predetermined time or the circulation device that circulates the defecation gas in the flow path. The contact time of the defecation gas with respect to the first detection unit can be increased.

  In the present invention, preferably, the first detection unit is made of a material containing tungsten trioxide, the second detection unit is made of a material containing tin dioxide, and the redox reduction temperature is 280 to 360 ° C. Yes, the oxidation-reduction temperature is 370 ° C. or higher.

  According to the present invention configured as described above, since the temperature of the second detection unit made of the material containing tin dioxide is set to 370 ° C. or more, the hydrogen gas causes a sufficient oxidation-reduction reaction. While the temperature of the first detection unit made of a material containing tungsten trioxide is set to 280 to 360, the odorous gas can be sufficiently suppressed while suppressing the redox reaction of hydrogen gas. It can be detected with accuracy.

In the present invention, the control device preferably maintains the first detection unit at a constant temperature between 280 and 360 ° C. during detection of gas.
According to the present invention configured as described above, the first detection unit is maintained at a constant temperature between 280 and 360 ° C., so that the influence of the temperature and humidity of the measurement environment is sufficiently suppressed and stable. Detected data can be obtained.

  In the present invention, it is preferable that the control device lowers the temperature of the first detection unit and the second detection unit to a temperature of 300 ° C. or lower when gas detection by the gas detection device is not performed.

  According to the present invention configured as described above, when the gas detection is not performed, the temperature of the first detection unit and the second detection unit is lowered to a temperature of 300 ° C. or lower, so that during the standby period Product accumulation due to incomplete combustion of odorous gas components can be sufficiently suppressed.

In the present invention, preferably, the control device maintains the temperature of the first detection unit at a temperature of 420 ° C. or higher for a predetermined time in the sensor cleaning.
According to the present invention configured as described above, since the temperature of the first detection unit is maintained at a temperature of 420 ° C. or higher for a predetermined time in the sensor cleaning, the first detection unit is adsorbed by the detection unit during gas detection or standby. The components of the odorous gas can be sufficiently oxidized and removed.

In the present invention, preferably, the control device lowers the temperature of the first detection unit to a temperature of 215 ° C. or lower when gas detection by the gas detection device is not performed.
According to the present invention configured as described above, when the gas detection is not performed, the temperature of the first detection unit is lowered to a temperature of 215 ° C. or lower, so that the odorous gas component is incomplete during standby. Accumulation of product in the detection unit due to combustion can be suppressed to a very small amount.

  In the present invention, preferably, the first and second detection units of the gas sensor are disposed in a common measurement gas passage through which the sucked defecation gas flows, and the first detection unit is the second detection unit. It is arranged on the upstream side.

  According to the present invention configured as described above, since the first and second detection units are arranged in the common measurement gas passage, the two detection units can be placed in an equivalent environment, The consistency of the detection data by each detection part can be ensured. Moreover, since the 1st detection part is arrange | positioned upstream of the 2nd detection part, the 2nd detection part currently maintained at high temperature rather than the 1st detection part is a trace amount odor in defecation gas. It can prevent the influence of the component of the sex gas and causing a measurement error.

According to the biological information measuring system of the present invention, it is possible to notify a subject of a poor physical condition in an unaffected state without giving an unnecessary psychological burden to the subject while enabling daily physical condition measurement. .
According to the biological information measuring system of the present invention, it is possible to detect odorous gas in the defecation gas with sufficient accuracy using a generally inexpensive gas sensor.

It is a figure which shows the state which attached the biological information measuring system by 1st Embodiment of this invention to the flush toilet installed in the toilet room. It is a block diagram which shows the structure of the biometric information measurement system of 1st Embodiment of this invention. It is a figure which shows the structure of the gas detection apparatus with which the biological information measurement system of 1st Embodiment of this invention is equipped. It is a figure explaining the flow of the physical condition measurement by the biometric information measurement system of 1st Embodiment of this invention. It is a figure which shows an example of the screen displayed on the display apparatus of the remote control with which the biometric information measurement system of 1st Embodiment of this invention is equipped. It is a figure which shows an example of the physical condition display table displayed on the display apparatus of the remote control with which the biometric information measurement system of 1st Embodiment of this invention is equipped. (A) is a figure which shows an example of the movement by the correction | amendment of the plot point of the newest data, (b) is a figure which shows the limit process with respect to the movement amount of a plot point. It is a figure which shows an example of the diagnostic table displayed on the server side in the biometric information measurement system of 1st Embodiment of this invention. It is the graph which showed typically the detection signal by each sensor with which living body information measurement system 1 was provided in one defecation action of a subject. (A) It is a figure explaining discharge | emission amount estimation of odorous gas in case the reference value of residual gas is not constant, (b) measures odorous gas in case a test subject uses alcoholic toilet seat sanitizer. It is a graph which shows an example of the detection value by a semiconductor gas sensor. It is a figure which shows an example of the update of a diagnostic table. It is a figure for demonstrating the method of determining a measurement reliability. It is a figure which shows the test subject adhesion odor gas noise correction table for determining the influence of the odor gas adhering to a test subject's body and clothes. It is a figure which shows the humidity correction table for determining the influence of humidity. It is a figure which shows the temperature correction table for determining the influence of temperature. It is a figure which shows the excretion number correction table for determining the influence of an excretion number. It is a figure which shows the correction table which shows the relationship between the reliability recorded on the data analyzer, and the correction factor of a measured value. It is a figure which shows an environmental noise correction table. It is a figure which shows a reference value stability correction table. It is a figure which shows the disinfection toilet seat washing | cleaning correction table. It is a figure which shows the defecation gas total amount correction value table. It is a figure which shows a fart correction value table. It is a figure which shows the stool amount correction value table. It is a figure which shows a flight type correction value table. It is a figure which shows the defecation space | interval correction value table. It is a figure which shows a data accumulation amount correction table. It is a figure which shows an airflow correction value table. It is a diagram showing a CO ₂ compensation table. It is a figure which shows a methane gas correction table. It is a figure which shows a sulfide gas correction table. It is a schematic diagram explaining the operation principle of the semiconductor gas sensor used in embodiment of this invention. It is a graph which shows the setting temperature of the detection part of a semiconductor gas sensor, and the relationship of the detection signal with respect to each gas. (A) Output signal waveform when gas containing odorous gas and hydrogen gas is brought into contact with odorous gas sensor, and (b) Relationship between odorous gas concentration in mixed gas and peak value of output signal. It is a graph to show. (A) Output signal waveform when a gas containing odorous gas and hydrogen gas is brought into contact with the odorous gas sensor, and (b) Odorous gas concentration in the mixed gas, and the output signal reaches a peak value. It is a graph which shows the relationship of the area until. (A) An output signal waveform when a gas containing odorous gas and hydrogen gas is brought into contact with the odorous gas sensor, and (b) an odorous gas concentration in the mixed gas and an inclination of the rising of the output signal. It is a graph. It is a figure explaining the correction | amendment by a compatibility holding circuit. It is a figure for demonstrating the compatibility maintenance with respect to secular change. (A) is a figure which shows the state which attached the test subject side apparatus of the biological information measuring system by another embodiment to the flush toilet installed in the toilet room, (b) is shown to the figure (a). It is a perspective view which shows the measuring apparatus of a test subject side apparatus. It is a figure which shows the structure of the suction device of another embodiment of this invention. It is a figure which shows the structure of the suction device of another embodiment of this invention. It is a figure explaining the flow of the physical condition measurement by a biological information measurement system, and the effect | action of a suction device when the suction device of another embodiment of this invention is used. It is a figure which shows the structure of the suction device of another embodiment of this invention. It is a figure which shows the result of having measured the amount of the health system gas and the odorous gas which are contained in the defecation gas of the healthy person below 60s, the healthy person of 60-70 generations, the patient of early cancer, and the patient of advanced cancer. . It is the figure which compared the gas amount of the hydrogen sulfide contained in defecation gas with a healthy subject and a colon cancer patient. It is the figure which compared the gas amount of the methyl mercaptan gas contained in defecation gas with a healthy subject and a colon cancer patient. It is the figure which compared the gas amount of the hydrogen gas contained in defecation gas with a healthy subject and a colon cancer patient. It is the figure which compared the gas amount of the carbon dioxide gas contained in defecation gas with a healthy subject and a colon cancer patient. It is the figure which compared the gas amount of the propionic acid gas contained in defecation gas with a healthy subject and a colon cancer patient. It is the figure which compared the gas amount of the acetic acid gas contained in defecation gas with a healthy subject and a colon cancer patient. It is the figure which compared the gas amount of butyric acid gas contained in defecation gas with a healthy subject and a colon cancer patient.

Hereinafter, an embodiment of a biological information measurement system of the present invention will be described in detail with reference to the drawings.
Moreover, FIG. 1 is a figure which shows the state which attached the biological information measuring system by 1st Embodiment of this invention to the flush toilet installed in the toilet room. FIG. 2 is a block diagram showing a configuration of the biological information measurement system of the present embodiment. FIG. 3 is a diagram illustrating a configuration of a gas detection device provided in the biological information measurement system of the present embodiment.

  As shown in FIG. 1, the biological information measurement system 1 includes a measuring device 6 built in a toilet seat 4 placed on a flush toilet 2 installed in a toilet room R, and a wall surface of the toilet room R. It has a subject-side device 10 consisting of an attached remote control 8. Furthermore, as shown in FIG. 2, the biological information measuring system 1 includes a server 12, a subject terminal 14 incorporating dedicated software in a smartphone, a medical institution terminal 16 installed in a medical institution such as a hospital, These perform part of the functions of the biological information measurement system 1 by exchanging data with the subject-side device 10. The server 12 and the medical institution terminal 16 accumulate measurement data transmitted from a large number of subject-side devices 10 and perform data analysis.

In the biological information measurement system 1 of the present embodiment, the physical condition state including the determination of cancer based on odorous gas containing sulfur component in the defecation gas released by the subject during defecation, particularly methyl mercaptan (CH ₃ SH) gas. Analyze. Furthermore, in the biological information measuring system 1 of the present embodiment, in addition to the odorous gas, the health-related gas is also measured, and the analysis accuracy of the physical condition is improved based on these correlations. The health-related gas is a gas derived from intestinal fermentation and increasing as the intestinal health level increases, and specifically, is a gas such as carbon dioxide, hydrogen, methane, and short chain fatty acid. In the present embodiment, carbon dioxide gas and hydrogen gas that can maintain high reliability of the health index measurement are measured as the health gas because it is easy to measure and has a large amount. Here, each subject apparatus 10 is configured to display the analysis result during or immediately after the subject's stool. On the other hand, in the server 12, measurement results from a large number of subjects are accumulated, and a more detailed analysis is possible by comparison with other subjects. As described above, in the biological information measuring system 1 of the present embodiment, simple analysis is performed in the subject-side apparatus 10 installed in the toilet room R, and more detailed analysis is performed in the server 12.

Here, the measurement principle of the physical condition in the biological information measurement system 1 of the present embodiment will be described.
It is reported in the literature that odorous gas containing sulfur components such as methyl mercaptan and hydrogen sulfide is discharged simultaneously with defecation from affected areas when suffering from cancer of the digestive system, particularly colorectal cancer. The digestive organs are the esophagus, stomach, duodenum, small intestine, large intestine, liver, pancreas, and gallbladder. The large intestine can also be classified into the appendix, cecum, rectum, and colon. . Cancer has little change every day and progresses gradually. As cancer progresses, the amount of odorous gas containing sulfur components, particularly methyl mercaptan, increases. That is, when the amount of odorous gas containing a sulfur component increases, it can be determined that cancer is progressing. Furthermore, in recent years, the idea of “non-disease” has spread, and the idea of improving the physical condition and preventing the disease when the physical condition deteriorates before becoming a diseased condition has spread. For this reason, it is required to detect cancer, particularly advanced cancer such as colorectal cancer, and improve physical condition before becoming cancer.

  Here, in addition to hydrogen sulfide and methyl mercaptan, defecation gas excreted during defecation includes nitrogen, oxygen, argon, water vapor, carbon dioxide, hydrogen, methane, acetic acid, trimethylamine, ammonia, propionic acid, methyl disulfide, three Contains methyl sulfide. Among these, in order to determine a cancer disease, it is necessary to measure an odorous gas containing a sulfur-based component, particularly methyl mercaptan. Propionic acid, methyl disulfide, and trifluidized methyl contained in the defecation gas are very small amounts compared to methyl mercaptan, and can be ignored because they do not pose any problem for analysis of physical condition such as cancer determination. However, other gas components are not so small as to be negligible. In order to accurately determine cancer, it is naturally conceivable to use a sensor that can detect only odorous gas containing a sulfur component. However, since a sensor that detects only odorous gas containing a sulfur component is large and very expensive, it is difficult to configure it as a household device.

  On the other hand, the inventors, as a result of earnest research, do not detect only methyl mercaptan in the defecation gas, but by using a semiconductor gas sensor that detects odorous gas including other odorous gases, It came to the idea that it can be configured as a household device at low cost. Specifically, the inventors decided to use a general-purpose semiconductor gas sensor that reacts not only with a sulfur-containing gas containing a sulfur component but also with other odorous gases as a sensor for detecting gas.

  In a state where the risk of cancer is increased, a very strong odorous gas containing a sulfur component such as methyl mercaptan gas is increased. And if it is a sensor which reacts widely with odorous gas like a semiconductor gas sensor, such an increase in gas can be detected without fail. However, as will be described later, sensors that react widely with odorous gases, such as semiconductor gas sensors, also increase odorous gases such as hydrogen sulfide, methyl mercaptan, acetic acid, trimethylamine, and ammonia that increase when they become unwell due to bad lifestyle. It will be detected. However, cancer is a disease that progresses over a long period of several years, and in the case of cancer, a state in which a very strong odorous gas containing a sulfur component such as methyl mercaptan gas or hydrogen sulfide is strengthened. It will last for a long time. For this reason, even if a general-purpose semiconductor gas sensor that reacts not only to sulfur-containing gases containing sulfur components but also to other odorous gases is used, if the gas amount is high over a long period of time, cancer disease is possible. It can be determined that the cancer risk is increased.

  In addition, a semiconductor sensor using an oxidation / reduction reaction detects not only methyl mercaptan gas but also odorous gases such as acetic acid, trimethylamine, and ammonia in the defecation gas. However, as a result of experiments, the inventors have found that the amount of mixed odorous gases such as hydrogen sulfide, methyl mercaptan, acetic acid, trimethylamine, and ammonia increases when the physical condition deteriorates due to bad lifestyle, and the physical condition is good. It was found to show a decreasing trend. Specifically, a healthy person has a small total amount of odorous gases other than methyl mercaptan gas and methyl mercaptan gas. In contrast, the total amount of methyl mercaptan gas and odorous gases other than methyl mercaptan gas is the amount of intestinal environment caused by factors such as excessive constipation, types of meals, lack of sleep, violent overeating, excessive drinking, and excessive stress. Temporarily increases due to deterioration.

The acetic acid in the defecation gas tends to increase not only when the physical condition deteriorates due to diarrhea or the like but also when the physical condition is good. That is, it does not necessarily coincide with the tendency of the amount of other odorous gases such as methyl mercaptan accompanying the above-described physical condition change. However, the amount of acetic acid contained in the defecation gas is very small compared to methyl mercaptan, and even if the amount of acetic acid increases when the physical condition is good, the increase is the decrease in other odorous gases. Very small compared to Furthermore, the increase amount of acetic acid when the physical condition deteriorates due to diarrhea or the like is much larger than the increase amount when the physical condition is good. Therefore, as a whole, the amount of odorous gas contained in the defecation gas increases when the physical condition deteriorates due to bad lifestyle, and tends to decrease when the physical condition is good. And since the intestinal environment deteriorates due to such bad lifestyle habits, it becomes cancer, so the amount of odorous gas contained in the defecation gas improves the physical condition while the cancer is unaffected Therefore, it becomes a suitable index.
In the present embodiment, the physical condition is analyzed based on detection data of a semiconductor sensor that reacts not only with methyl mercaptan gas but also with odorous gas in defecation gas other than methyl mercaptan gas such as hydrogen sulfide, acetic acid, trimethylamine, and ammonia. As a result, an analysis result reflecting the results of poor physical condition and bad lifestyle habits is obtained, and this analysis result should be used as an index based on objective data for improving physical condition and lifestyle habits that increase cancer risk. Can do.

Further, the defecation gas contains not only odorous gas but also H ₂ and methane, and when a semiconductor gas sensor is used as the gas sensor, these sensors also react to H ₂ and methane. Furthermore, when a measuring apparatus using a semiconductor gas sensor is set in each household, these sensors may react with a fragrance or perfume.
On the other hand, as will be described in detail later, the inventors use a hydrogen sensor, a methane sensor, and a column to detect the effect of hydrogen and methane from the detection data of the semiconductor gas sensor and detect defecation behavior. By doing so, we established a method to remove the effects of fragrances and perfumes as noise. As a result, the influence of hydrogen and methane can be separated from the data detected by the semiconductor gas sensor, and the influence of fragrance and perfume can be removed to estimate only the amount of odorous gas in the defecation gas. It was.

Further, the amount of methyl mercaptan and other odorous gases contained in the defecation gas is very small compared to H ₂ and methane. For this reason, even if a semiconductor gas sensor is used, the mixed gas amount of these odorous gases may not be measured accurately.
On the other hand, the inventors have a healthy intestinal environment that is acidic, but when they become cancer patients, an odorous gas containing a sulfur component is generated and the amount of the gas increases. In addition, the intestinal environment becomes alkaline, and the amount of bifidobacteria and the like is reduced, so that the amount of healthy gas such as CO ₂ , H ₂ , and fatty acid is inversely proportional to the increase in the amount of odorous gas We paid attention to the fact that it will definitely decrease continuously.
For this reason, the inventors do not necessarily have high measurement accuracy in each measurement, but the correlation between the amount of odorous gas such as methyl mercaptan and the amount of healthy gas components such as CO ₂ and H ₂ is calculated daily. We thought that the occurrence of advanced cancer could be detected by monitoring during defecation.

  Therefore, the inventors measure the amount of healthy gas and odorous gas contained in the defecation gas of healthy people in their 60s or younger, healthy people in their 60s to 70s, patients with early cancer, and patients with advanced cancer. As a result, a result as shown in FIG. 43 was obtained. That is, the defecation gas of a healthy person has a large amount of healthy gas and a small amount of odorous gas. On the other hand, the defecation gas of cancer patients has a small amount of healthy gas and a large amount of odorous gas. And the amount of the health system gas contained in the defeased gas of advanced cancer is decreasing compared with early cancer. Furthermore, when the amount of healthy gas and the amount of odorous gas are intermediate amounts between a cancer patient and a healthy person, it is considered to be a gray zone, that is, a non-disease state. For this reason, the inventors measure the gas amount of the health system gas and the gas amount of the odorous gas of the subject based on the above-mentioned knowledge, and think that the determination accuracy of the health state can be improved based on these correlations. It was.

Further, FIG. 44 to FIG. 50 show measurement data comparing various gas amounts contained in the defecation gas between healthy subjects and colorectal cancer patients (including advanced cancer and early cancer).
44 is a graph comparing the amount of hydrogen sulfide contained in the defecation gas between healthy subjects and colorectal cancer patients, FIG. 45 is methyl mercaptan gas, FIG. 46 is hydrogen gas, FIG. 47 is carbon dioxide gas, FIG. 48 is a graph comparing propionic acid gas, FIG. 49 is acetic acid gas, and FIG. 50 is a graph comparing the amount of butyric acid gas between a healthy person and a colon cancer patient. In each of these drawings, (a) shows measurement data of each gas amount, a healthy person is indicated by a round mark, and a colon cancer patient is indicated by a triangular mark. Further, (b) shows the average value of each measurement data as a bar graph and the standard deviation of the measurement data as a line segment.

  As is apparent from the measurement data of FIGS. 44 to 50, the amount of various gases contained in the defecation gas varies greatly between healthy subjects and colorectal cancer patients, but odorous hydrogen sulfide gas and methyl mercaptan are present. Regarding gas, many data showing a large amount of gas are found in patients with colorectal cancer, and there is almost no data showing a large amount of gas in healthy individuals. On the other hand, with respect to hydrogen gas and carbon dioxide gas, many data showing a large amount of gas are found in healthy subjects, and almost no data showing a large amount of gas is seen in patients with colorectal cancer. In this way, the amount of odorous gas, which indicates the risk of colorectal cancer, contained in the defecation gas is large in colorectal cancer patients and small in healthy individuals, while hydrogen gas and carbon dioxide, which are healthy gases, are present. The amount of carbon gas is higher in healthy subjects and lower in colorectal cancer patients. Thus, the size relationship between the amount of odorous gas and the amount of healthy gas is reversed between healthy subjects and colorectal cancer patients. Although this measurement data shows that it is difficult to measure the physical condition of the subject sufficiently by measuring the amount of these odorous gases and health-related gases once, the relationship between the odorous gas and health-related gases can be measured within a predetermined period. It shows that the physical condition of the subject can be reliably measured by continuously measuring multiple times.

In addition, the inventors measured the defecation gas, and when performing a plurality of excretion actions (an act of discharging one fart or one stool) at the time of one defecation, the first excretion It was found that the amount of defecation gas discharged with the action was large and odorous gas was also included. Therefore, in the present embodiment, in order to accurately measure a trace amount of odorous gas, the health condition of the subject is analyzed based on the first stool gas. As a result, when measuring the amount of gas from the second and subsequent excretion actions, the effects of feces and farts excreted by the first excretion action may be affected.
The biological information measurement system 1 of the present embodiment is based on the measurement principle described above. The odorous gas in the following description includes methyl mercaptan gas, which is an odorous gas containing a sulfur component, and odorous gases such as hydrogen sulfide other than methyl mercaptan, methyl mercaptan, acetic acid, trimethylamine, and ammonia. It is a waste.

Next, a specific configuration of the biological information measurement system 1 of the present embodiment will be described in detail.
As shown in FIG. 1, the subject-side device 10 in the biological information measurement system 1 is attached to the flush toilet 2 in the toilet room R, and a part thereof is incorporated in the toilet seat 4 with a buttocks washing function. In the toilet seat 4 with a butt washing function, as a measuring device 6, there are a suction device 18 that sucks the gas in the bowl 2a of the flush toilet 2 and a gas detection device 20 that detects a specific component contained in the sucked gas. It has been incorporated. The suction device 18 also serves as a part of the function of a deodorizing device incorporated in the toilet seat 4 with a normal butt washing function. The gas sucked by the suction device 18 is deodorized by the deodorizing device, and then the bowl 2a. Returned in. Further, each device incorporated in the toilet seat 4 such as the suction device 18 and the gas detection device 20 is controlled by a control device 22 (FIG. 2) built in the toilet seat side.

As shown in FIG. 2, the subject-side device 10 includes a measurement device 6 incorporated in the toilet seat 4 and a data analysis device 60 built in the remote controller 8.
The measuring device 6 includes a control device 22 having a CPU 22a and a storage device 22b. The control device 22 includes a hydrogen gas sensor 24, an odorous gas sensor 26, a carbon dioxide sensor 28, a humidity sensor 30, a temperature sensor 32, an entrance detection sensor 34, a seating detection sensor 36, and a defecation / urination detection sensor. 38, toilet lid opening / closing device 40, nozzle driving device 42, nozzle cleaning device 44, toilet bowl cleaning device 46, toilet bowl sanitizing device 48, fragrance sprayer 50 as a fragrance injection device, and deodorized air The feeder 52, the suction device 18, the sensor heating heater 54, the transceiver 56, and the duct cleaner 58 are connected. As will be described later, the hydrogen gas sensor and the odorous gas sensor can be an integrated sensor.

  The temperature sensor 32 measures the temperature of a detection unit such as the odorous gas sensor 26. The humidity sensor 30 measures the humidity of the gas sucked from the bowl 2a. The sensor sensitivity of these sensors slightly changes depending on the temperature of the detection unit. In addition, a change in humidity due to urination or the like similarly affects the sensitivity of the sensor. In the present embodiment, since the amount of odorous gas is very small, the toilet side is used in accordance with the temperature and humidity measured by these sensors 30 and 32 so that the minute amount of gas can be measured accurately and stably. The CPU 22a controls a sensor heating heater 54 and a humidity adjusting device 59 (FIG. 3), which will be described later, so as to accurately maintain the sensor temperature and suction humidity of the sensors 30 and 32 within a predetermined range, thereby determining the predetermined temperature and humidity environment. Adjust to. Note that these sensors and devices are not essential, and are desirably provided to improve accuracy.

The entrance detection sensor 34 is, for example, an infrared sensor, and detects entry / exit of the subject into the toilet room R.
The seating detection sensor 36 is, for example, an infrared sensor or a pressure sensor, and detects whether or not the subject is seated on the toilet seat 4.
In the present embodiment, the defecation / urine detection sensor 38 is constituted by a microwave sensor, and whether the stool or stool discharged by the subject is stool or whether the stool floats in the sealed water It is configured to detect the state of defecation such as whether it is sinking or whether the stool is diarrhea. Alternatively, the defecation / urination detection sensor 38 can be configured by a CCD, a water level sensor that measures the transition of the sealing water, or the like.

The toilet lid opening / closing device 40 is a device for opening / closing the toilet lid according to the situation based on a detection signal from the entrance detection sensor 34 or the like.
The nozzle drive device 42 is a device that is used for butt washing, and is a device that cleans the butt of the subject after defecation. The nozzle driving device 42 is configured to drive the nozzle to wash the flush toilet 2.
The nozzle cleaning device 44 is a device for cleaning the nozzles of the nozzle driving device 42. In this embodiment, hypochlorous acid is generated from tap water, and the nozzle is cleaned with the generated hypochlorous acid. It is configured.

The toilet flushing device 46 is a device for discharging water or tap water stored in a flush water tank (not shown) into the toilet bowl and washing the bowl 2a of the flush toilet 2. The toilet bowl cleaning device 46 is normally operated by the operation of the remote controller 8 by the subject and cleans the inside of the bowl 2a. However, as will be described later, the toilet cleaning device 46 is automatically operated by the control device 22 according to the situation.
The toilet sterilizer 48 generates, for example, sterilized water such as hypochlorous acid water from tap water, sprays the generated sterilized water onto the bowl 2a of the flush toilet 2, and sterilizes the bowl 2a. It is.

The fragrance sprayer 50 is a device for spraying a predetermined fragrance into the toilet room R. This is provided in order to prevent the subject from spraying an arbitrary fragrance into the toilet room R and spraying an odor component that would cause a measurement disturbance. By providing the fragrance sprayer 50, a fragrance that does not affect a predetermined measurement can be sprayed in a predetermined amount at a predetermined time according to the situation, and the biological information that the fragrance has been sprayed. The measurement system 1 can recognize it. Thereby, disturbance to the physical condition measurement is reduced and the analysis result is stabilized, so that the fragrance sprayer 50 functions as an output result stabilization unit.
The suction device 18 includes a fan for sucking the gas in the bowl 2a of the flush toilet 2, and the sucked gas flows through the detection unit such as the odorous gas sensor 26 and is then deodorized by the deodorizing filter. . The detailed configuration of the suction device 18 will be described later.

The deodorized air supply device 52 is a device that discharges air that has been sucked and deodorized by the suction device 18 into the bowl 2a.
The sensor warming heater 54 is for heating and activating a detection unit such as the odorous gas sensor 26. Each sensor can accurately detect a predetermined gas component by maintaining the detection unit at a predetermined temperature.
The duct cleaner 58 is a device for cleaning the inside of the duct 18a attached to the suction device 18 with, for example, hypochlorous acid obtained by electrolyzing tap water.

  In the present embodiment shown in FIG. 1, the suction device 18, the deodorizing air supply unit 52, and the duct cleaner 58 are integrally configured as a deodorizing device. That is, the gas in the bowl 2a is sucked into the duct 18a by the suction device 18, the sucked gas is deodorized by the deodorizing filter 78 (FIG. 3), and the deodorized gas is released into the bowl 2a again. Thereby, the gas reacting with the odor gas sensor 26 flows into the bowl 2a from the outside, and the gas component in the bowl 2a is prevented from changing due to factors other than the defecation gas discharged from the subject during the defecation period of the subject. Is done. Therefore, the deodorizing device and the deodorizing air supply device 52 provided with the deodorizing filter 78 function as output result stabilizing means. Alternatively, as a modified example, a measurement gas supply device (not shown) that allows gas that does not react with each gas sensor to flow into the bowl 2a is provided, and the measurement gas equivalent to the gas sucked by the suction device 18 is provided. The present invention can also be configured to flow into the bowl 2a. In this case, the measurement gas supply device (not shown) functions as an output result stabilization unit that stabilizes the analysis result.

  Next, as shown in FIG. 2, the remote control 8 has a built-in data analysis device 60. The data analysis device 60 includes a subject identification device 62, an input device 64, a transceiver 66, and a display device. 68 and a speaker 70 are connected. In the present embodiment, the transceiver 66, the display device 68, and the speaker 70 function as an output device that outputs an analysis result by the data analysis device 60. The data analysis device 60 includes a CPU, a storage device, a program for operating these, and the like, and a database is constructed in the storage device.

In this embodiment, the input device 64 and the display device 68 are configured by a touch panel, and receive various inputs such as subject identification information such as the subject's name, and display various information such as physical condition measurement results. It has come to be.
The speaker 70 is configured to output various alarms, messages, etc. issued by the biological information measurement system 1.
In the subject specifying device 62, subject identification information such as the subject's name is registered in advance. When the subject uses the biological information measuring system 1, the registered subject is displayed on the touch panel, and the subject selects his / her name.

  Further, the transmitter / receiver 66 on the remote control 8 side is communicably connected to the server 12 via a network. For example, the subject terminal 14 includes a device capable of displaying received data, such as a smartphone, a tablet PC, or a PC.

The server 12 includes a defecation gas database. In the defecation gas database, measurement data including the amount of odorous gas and the amount of health gas in each defecation behavior in association with the subject identification information of each subject using the biological information measurement system 1, and reliability data And are recorded along with the measurement date. The server 12 stores a diagnostic table and has a data analysis circuit.
Furthermore, the server 12 is connected to a medical institution terminal 16 installed in a hospital, a health institution, or the like via a network. The medical institution terminal 16 is composed of a PC, for example, and can browse data recorded in the database of the server 12.

Next, the configuration of the gas detection device 20 built in the toilet seat 4 will be described with reference to FIG.
First, in the biological information measurement system 1 of the present embodiment, a semiconductor gas sensor is used as a gas sensor in the gas detection device 20 in order to detect odorous gas and hydrogen gas. Further, in order to detect carbon dioxide, the gas detection device 20 uses a solid electrolyte type sensor.
The semiconductor gas sensor has a detection unit made of a metal oxide film containing tin dioxide or the like. In a state where the detection unit is heated to several hundred degrees, when the heated detection unit is exposed to a reducing gas, an oxidation / reduction reaction occurs between oxygen adsorbed on the surface and the reducing gas. The semiconductor gas sensor can detect the reducing gas by electrically detecting a change in the resistance value of the detection unit due to the oxidation / reduction reaction. The reducing gas that can be detected by the semiconductor gas sensor includes hydrogen gas and odorous gas. In this embodiment, the semiconductor gas sensor is used for both the sensor for detecting odorous gas and the sensor for detecting hydrogen gas. However, the detection unit used in the odorous gas sensor reacts strongly to the odorous gas. As described above, the materials of the detection units are adjusted so that the detection units used in the hydrogen gas sensor react strongly with hydrogen gas.

  As described above, in the present embodiment, the “semiconductor gas sensor” is used as the “odor gas sensor”. As described above, this “semiconductor gas sensor” is other than the methyl mercaptan gas to be detected. The general thing which reacts also widely with odorous gas is used. In other words, a gas sensor that reacts only with methyl mercaptan gas is extremely difficult to manufacture, and even if manufactured, it becomes an extremely large and expensive gas sensor. If such a large and expensive gas sensor is adopted, a biological information measurement system is manufactured at a cost that can be sold as a consumer product, even if it can be realized as a medical device used in advanced clinical examinations. It becomes impossible. In the biological information measurement system of the present embodiment, a simple, general-purpose gas sensor that reacts to other odorous gases other than the methyl mercaptan gas to be detected is adopted as the “odorous gas sensor”. This makes it possible to realize a living body information measurement system as a consumer product. As described above, the gas sensor employed in the present embodiment is a sensor that also reacts with methyl mercaptan gas and odorous gas other than methyl mercaptan gas. It will be referred to as “odorous gas sensor”. Representative examples of the odorous gas to which the “odorous gas sensor” employed in the present embodiment reacts include methyl mercaptan gas, hydrogen sulfide gas, ammonia gas, and alcohol-based gas.

  In addition, the “odorous gas sensor” employed in the biological information measuring system 1 of the present embodiment is a sensor that reacts to other odorous gases in addition to the target methyl mercaptan gas, but will be described later. Due to various measures, even if such a gas sensor is used, it is possible to measure with sufficient accuracy as a consumer product. Specifically, in a toilet room where various odorous gases exist, data on defecation gas is extracted from the device for improving the measurement environment and detection signals from the gas sensor, assuming the defecation behavior of the subject. Ingenuity in data processing, even when detection data with a large error is obtained, ingenuity to prevent an excessive psychological burden on the subject can be mentioned. Details of each device point will be described later.

  In the present embodiment, a semiconductor gas sensor is used as a sensor for detecting odorous gas and hydrogen gas. A solid electrolyte sensor is used as a sensor for detecting carbon dioxide. The carbon dioxide sensor is not limited to these, and an infrared method or the like may be used. A sensor for detecting carbon dioxide can be omitted.

As shown in FIG. 3, in the present embodiment, a gas detection device 20 is disposed inside the suction device 18.
The suction device 18 includes a duct 18a directed downward, an intake passage 18b oriented substantially in the horizontal direction, and a suction fan 18c disposed on the downstream side of the intake passage 18b. A duct cleaner 58 and a humidity adjusting device 59 are provided inside the duct 18a.
The gas detection device 20 includes a filter 72, an odorous gas sensor 26, a hydrogen gas sensor 24, and a carbon dioxide sensor 28 disposed inside an intake passage 18b that is a measurement gas passage. As shown in FIG. 3, a filter 72 is disposed so as to cross the intake passage 18 b, and an odorous gas sensor 26, a hydrogen gas sensor 24, and a carbon dioxide sensor 28 are juxtaposed on the downstream side of the filter 72.

Further, a deodorizing filter 78 is provided on the downstream side of the odorous gas sensor 26, and the suction device 18 also functions as a deodorizing device by deodorizing the gas taken in by the deodorizing filter 78.
Further, a humidity adjusting device 59 is provided on the downstream side of the deodorizing filter 78. A moisture absorbent is enclosed in the humidity adjusting device 59, and when it is necessary to lower the humidity in the bowl 2a, the air that has passed through the deodorizing filter 78 passes through the enclosed moisture absorbent. Thus, the flow path is switched to remove moisture from the air circulating in the bowl 2a. Thereby, the humidity in the bowl 2a is maintained at an appropriate value, and the detection sensitivity of each gas sensor is maintained substantially constant. Accordingly, the humidity adjusting device 59 functions as an output result stabilizing unit that suppresses a humidity change in the bowl 2a.

  The suction fan 18c sucks off the odorous gas including the odorous gas in the bowl 2a of the flush toilet 2 at a constant speed, deodorizes it, and returns it to the bowl 2a. The deodorizing duct 18a opens in the bowl 2a with the suction port directed downward so that droplets such as urine do not enter the interior. Odorous gases such as methyl mercaptan and hydrogen gas have a low molecular weight, so they rise immediately after defecation. In contrast, in the present embodiment, the exhausted odorous gas and hydrogen gas are reliably introduced into the gas detection device 20 by being sucked by the suction fan 18c from the inlet of the duct 18a opened in the bowl 2a. be able to. Thus, the suction device 18 is operated before the subject starts defecation, and makes the gas sensor contact a gas having a constant flow rate during the defecation period of the subject. Thereby, a stable measurement value can be obtained. Accordingly, the suction device 18 and the control device 22 that operates the suction device 18 function as output result stabilization means.

  The filter 72 is a filter that does not have a deodorizing function, and is configured to pass odorous gas, hydrogen, and carbon dioxide, and prevent passage of foreign matters such as urine and cleaning agents. As such a filter 72, a member that mechanically collects foreign matters, for example, a fine net-like member, without using a chemical reaction, can be used. Thereby, it is possible to prevent the odorous gas sensor 26, the hydrogen gas sensor 24, and the carbon dioxide sensor 28 from being contaminated by urine stones or the like.

  Further, for each gas sensor, a sensor heating heater 54 is provided upstream of each gas sensor and downstream of the filter 72. As described above, the odorous gas sensor 26 and the hydrogen gas sensor 24, which are semiconductor gas sensors, can detect hydrogen and odorous gas in a state where the detection unit is heated to a predetermined temperature. The sensor heating heater 54 is provided to heat the detection units of the odorous gas sensor 26 and the hydrogen gas sensor 24. Also, the carbon dioxide sensor 28 needs to heat the solid electrolyte to a predetermined temperature, and a sensor heating heater 54 is provided. These sensor heating heaters 54 also function as an odor removing device for heating and removing odorous gas components adhering to the sensor.

  Further, the sensor heating heater 54 also functions as a means for removing deposits attached to each sensor. Although the gas that has passed through the filter 72 has foreign substances removed, the sucked gas contains various odorous gas components. Such off-flavor gas components adhere to each gas sensor and can cause noise when measuring a minute amount of odorous gas. On the other hand, by heating the detection part of the sensor with the sensor heating heater 54, the off-flavor gas adhering to the sensor can be removed by heating without providing a new device. Moreover, the control apparatus 22 controls the sensor heating heater 54 so that the temperature of each gas sensor becomes constant before the subject's defecation behavior is started. That is, the control device 22 controls the sensor heating heater 54 so as to suppress the temperature of each gas sensor from being lowered due to the contact of the airflow. Thereby, during the test subject's defecation period, the sensitivity of each gas sensor is managed by predetermined value, and the measurement error by each gas sensor can be suppressed. Therefore, the control device 22 and the sensor heating heater 54 function as output result stabilization means for stabilizing the output analysis result.

  Further, the deodorizing filter 78 is a catalytic filter that adsorbs an odorous gas such as an odorous gas. The air from which gas such as odorous gas is removed by the deodorizing filter 78 is returned to the bowl 2a. At this time, if the gas refluxed into the bowl 2a contains odorous gas or the like, the odorous gas or the like flowing into the bowl 2a is again sucked from the duct 18a, and the odorous gas sensor 26 detects again. There is a risk that. For this reason, in this embodiment, the deodorizing filter 78 is arrange | positioned in the downstream of the odorous gas sensor 26, and odor components, such as odorous gas, are reliably removed from the gas returned in the bowl 2a.

  When the subject sits on the toilet seat 4, the upper part of the bowl 2a is closed by underwear or the like. When the inside of the bowl 2a becomes negative pressure, the off-flavor gas component adhering to the body of the subject or clothes is sucked into the bowl 2a. In the biological information measurement system 1 of the present embodiment, the odorous gas sensor 26 is set to have extremely high sensitivity in order to detect odorous gas that is contained in a small amount in the defecation gas. Even the off-flavor gas component adhering to etc. becomes a disturbance to the measurement. On the other hand, in this embodiment, since the gas after deodorization is returned into the bowl 2a, the inside of the bowl 2a does not become negative pressure, and the off-flavor gas component adhering to the body of the subject, clothes, etc. Can be prevented from being drawn into the bowl 2a.

  In addition, in many people's intestines, there are no methanogens that produce methane, or even if they exist, the amount of methane is very small. Few. For this reason, in this embodiment, the hydrogen sensor 24 and the carbon dioxide sensor 26 are provided as health system gas sensors. However, rarely, there are people who have very many methanogens in their intestines. As described above, the defecation gas of a person having a very large number of methanogenic bacteria in the intestine has a large amount of methane produced but a small amount of hydrogen produced. For this reason, when only the hydrogen sensor 24 and the carbon dioxide sensor 26 are provided, the fecal gas of a person who has a very large amount of methanogenic bacteria in the intestine is judged to be less preferable because the amount of discharged health gas is small. In this embodiment, the hydrogen sensor 24 and the carbon dioxide sensor 26 are provided as health gas sensors in order to suit many people. However, a methane gas sensor is provided instead of the hydrogen sensor 24 according to people with a large amount of methane gas. May be. Furthermore, by providing a methane gas sensor in addition to the hydrogen sensor 24 and the carbon dioxide sensor 26 in advance, any subject can be handled, which is more preferable.

  Moreover, if the sucked defecation gas is returned to the bowl 2a as it is, the measurement accuracy by the odorous gas sensor 26 is lowered. On the other hand, in this embodiment, since the sucked defecation gas is deodorized by the deodorizing filter 78 and returned to the bowl, the amount of odorous gas and the amount of hydrogen can be accurately measured. Further, such a deodorizing filter 78 needs to be disposed on the downstream side of each sensor. However, if such a deodorizing filter 78 is provided on the downstream side of each sensor, the sensor may be directly contaminated with foreign substances. . On the other hand, in this embodiment, since the filter 72 that does not have the deodorizing function is provided on the upstream side of the sensor, the contamination of the sensor with foreign substances can be reduced without affecting the odor component measurement.

  Further, when the gas in the bowl 2a is sucked, the pressure in the bowl 2a is lowered, and there is a possibility that the off-flavor gas component adhering to the body and clothes of the subject flows into the bowl 2a. On the other hand, in this embodiment, since the air from which the odor components after deodorization are removed is returned to the bowl 2a, the flow of off-flavor gas components adhering to the body and clothes of the subject into the bowl 2a is prevented. Accurate measurement became possible.

  However, it is not essential to return the air from which the odor components after deodorization are removed to the bowl 2a. Thus, when the structure which returns the air which removed the odor component after deodorizing in the bowl 2a is not employ | adopted, there exists a possibility that the off-flavor gas component adhering to a test subject's body and clothes may flow in in the bowl 2a. However, as will be described later with reference to FIG. 9, when setting the residual gas reference value, the residual gas reference is included after including the influence of the off-flavor gas components adhering to the body and clothes of the subject. Value is set. For this reason, it is possible to estimate the gas amount without returning the air from which the odor components after deodorization are removed to the bowl 2a.

Next, with reference to FIG.4 and FIG.5, the flow which measures a physical condition with the biological information measuring system 1 by 1st Embodiment of this invention is demonstrated.
FIG. 4 is a diagram for explaining the flow of physical condition measurement. The upper part shows each process in the physical condition measurement, and the lower part shows an example of a screen displayed on the display device of the remote controller in each process. FIG. 5 is a diagram illustrating an example of a screen displayed on the display device of the remote controller.

  In the biological information measuring system 1 of the present embodiment, the physical condition including the determination of cancer is analyzed based on the correlation between the odorous gas in the defecation gas released by the subject at the time of defecation and the health gas. Here, it is preferable that each subject-side apparatus displays the analysis result during the defecation period or in a short period of time after the end of a single defecation period until it exits. However, if the analysis is performed in a short time, the analysis accuracy may be lowered. In addition, it is difficult to suck all of the defecation gas discharged by the subject with the suction device 18, and these are disturbances in a measurement environment where the toilet bowl or toilet is very unsanitary or the fragrance is strong. May affect the measurement accuracy. Therefore, in each subject-side device, when the physical condition including the presence / absence of illness is transmitted to the subject, the time-lapse results of measurement during many defecation behaviors over a long period of time are taken into account. Based on this, instead of strongly transmitting only the absolute amount of odorous gas highly relevant to cancer, the change in the physical condition of the subject, that is, the change in the intestinal state is transmitted strongly. Also, taking into account measurement errors at the time of each bowel movement, in the present embodiment, the subject is notified based on the measurement result at the time of one bowel movement so that the physical condition notified to the subject does not change significantly. It is devised to be notified. This utilizes the characteristic that the disease of cancer is a disease that progresses over a long period of time. The amount of odorous gas that is strongly related to cancer in a short period of time is greatly related to cancer. This is because it is not strong, but is often caused by bad lifestyle habits or the influence of noise, and if the physical condition changes greatly, it causes unnecessary psychological anxiety to the subject.

  In view of the above points, in the present embodiment, first, in the subject-side device 10, the first defecation gas measurement result of one defecation action, that is, based on the defecation gas discharged during the first excretion action. , Simply analyze the health condition, and display the analysis result of the health condition. On the other hand, the server 12 can perform more detailed analysis by comparing with other subjects based on the total amount of gas discharged during a single defecation action. Therefore, in the biological information measurement system 1 of the present embodiment, simple analysis is performed in the subject-side device 10 installed in the toilet room R, and more detailed analysis is performed in the server 12.

  As shown in FIG. 4, in the measurement at the time of one defecation action by the biological information measurement system 1 of the present embodiment, the pre-measurement environment preparation step S1, the measurement start preparation step S2, and the measurement reference value setting step S3 The measurement process S4, the examination process S5, the communication process S6, and the post-measurement environment maintenance process S7 are executed.

The pre-measurement environment maintenance step S1 is a step performed before the subject enters the toilet room R. Whether or not the subject has entered the toilet room R is detected by the entrance detection sensor 34 (FIG. 2).
In the pre-measurement environment maintenance step S1, the control device 22 on the toilet seat side changes and controls the sensor warming heater 54, the suction device 18, and the toilet lid opening / closing device 40 to the measurement standby mode. In the measurement standby mode, the sensor warming heater 54 is based on the temperature measured by the temperature sensor 32 and has a standby temperature (for example, 200 ° C.) that is lower than the temperature at which the detection unit of the odorous gas sensor 26 performs measurement. ) To be controlled. In the measurement standby mode, the suction device 18 is controlled so that the suction air volume is minimized. The toilet lid opening / closing device 40 is controlled so that the toilet lid is closed in the measurement standby mode.

  In the pre-measurement environment maintenance step S1, the detection unit of the odorous gas sensor 26 measures the gas concentration of the odorous gas although the sensor warming heater 54 is in the measurement standby mode and is lower than the optimum temperature. Is possible. When there is a source of off-flavor gas in the bowl 2a, such as when there is attached stool in the flush toilet 2, the gas concentration measured by the odorous gas sensor 26 becomes a predetermined value or more. When the gas concentration value measured by the odorous gas sensor 26 exceeds a predetermined value in the pre-measurement environment maintenance step S1, the control device 22 performs toilet cleaning. Specifically, the control device 22 discharges the cleaning water from the nozzle by the nozzle driving device 42 to clean the bowl 2a, and discharges the water stored in the cleaning water tank by the toilet cleaning device 46 into the bowl 2a. The bowl 2a is washed, or sterilization water such as hypochlorous acid water is generated from tap water by the toilet sterilizer 48, and the generated sterilized water is sprayed on the bowl 2a to sterilize the bowl 2a. Do.

  Further, when the gas concentration measured by the odorous gas sensor 26 is equal to or higher than a predetermined value, the control device 22 can operate the suction device 18 to discharge the gas in the bowl 2a, thereby reducing the gas concentration. Since the gas sucked by the suction device 18 is deodorized by the deodorization filter 78, the suction device 18 and the deodorization filter 78 function as a deodorization device. Further, by sucking gas with the suction device 18 with the toilet lid open, not only the inside of the bowl 2a but also the toilet room R can be deodorized. It can also function as a deodorizing device. Preferably, when the suction device 18 and the deodorization filter 78 are functioned as a deodorization device, the amount of gas sucked by the suction device 18 is set larger than when the physical condition is measured during the defecation period of the subject.

  Alternatively, a ventilation device (not shown) provided in the toilet room R may be configured to be controlled by the control device 22, and the gas concentration may be lowered by operating the ventilation device. In this way, the concentration of the odorous gas remaining in the bowl 2a is reduced, and the influence of residual gas noise caused by the remaining gas is reduced. Therefore, the cleaning or sterilization of the bowl 2a by the nozzle drive device 42, the toilet bowl cleaning device 46 or the toilet bowl sanitizing device 48, and the exhaust / deodorization in the bowl 2a or the toilet room R, which are executed in the pre-measurement environment maintenance step S1, It functions as noise countermeasure means for reducing the influence of residual gas noise and residual gas removal means for reducing the concentration of residual odorous gas. Further, the noise countermeasure means executed when the subject is not in the toilet room R and is outside the subject's defecation period functions as the first noise countermeasure means and also as the residual gas removing means.

  Furthermore, if the amount of gas measured by the odorous gas sensor 26 does not become less than a predetermined value even after performing the toilet cleaning described above in the pre-measurement environment maintenance step S1, the control device 22 uses the transceiver 56 to perform a cleaning warning. Send command signal. When the transmitter / receiver 66 on the remote control 8 side receives the cleaning warning command signal, the display device 68 or the speaker 70 notifies the subject to wash the toilet.

  In addition, in the pre-measurement environment maintenance step S1, the control device 22 periodically performs suction environment cleaning. Specifically, the control device 22 drives the duct cleaner 58 and sprays cleaning water into the duct 18a of the suction device 18 to clean the duct 18a and the like. Further, the sensor heating heater 54 heats the detection units of the hydrogen gas sensor 24, the odorous gas sensor 26, and the carbon dioxide sensor 28 to a high temperature that is a cleaning temperature, and the surfaces of the detection units of the gas sensors 24, 26, and 28 are heated. Sensor cleaning is performed to burn off off-flavor gas components adhering to the surface.

  Next, when the entrance of the subject is detected by the entrance detection sensor 34, the control device 22 transmits a signal to start the measurement start preparation step S <b> 2 to the transmitter / receiver 66 on the remote control 8 side via the transmitter / receiver 56. The measurement start preparation step S2 is performed in synchronization with the remote control side.

  In the measurement start preparation step S2, first, the subject specifying device 62 built in the remote controller 8 specifies the subject. Specifically, the resident of the house where the system is installed is registered in the biological information measurement system 1, and the registered resident is displayed as a candidate for the subject. That is, as shown in FIG. 5, "subject A", "subject B", "subject C",. . The candidate's button is displayed, and when the subject entering the toilet room R presses the button corresponding to himself / herself, the subject is identified. Further, the data analysis device 60 built in the remote controller 8 refers to the storage device, and displays the physical measurement display table as the reference measurement data and the past measurement data of the personal identification information received by the subject identification device 62 and the analysis reference. get.

  Further, in the measurement start preparation step S2, as shown in FIG. 5, the data analysis device 60 performs the previous defecation such as “Did you defecate in another place?” On the second stage of the display device. Questions about whether or not this was done in the toilet where this device was installed, and the answer options “Yes (this morning)”, “Yes (yesterday afternoon)”, “Yes (yesterday morning)”, “before yesterday” “No” is displayed. When the subject answers the question, the defecation history information of the subject is input to the input device 64 of the data analysis device 60. The defecation history information regarding the elapsed time from the previous defecation behavior of the subject is stored in a storage device (subject information storage device) built in the remote controller 8, and the subjects registered in advance in the subject information storage device The subject information regarding the body weight, age, sex, etc. of the child is also stored. The defecation history information is transmitted to the server 12 and recorded in the database of the server 12.

  In the measurement start preparation step S2, the toilet-side control device 22 controls the sensor heating heater 54, the suction device 18, and the toilet lid opening / closing device 40 to the measurement mode. In the measurement mode, the sensor heating heater 54 is controlled based on the temperature measured by the temperature sensor 32 so that the temperature of the detection unit of the odorous gas sensor 26 becomes a detection temperature (350 ° C.) suitable for measurement. The Further, in the measurement mode, the suction device 18 is controlled to be constant so that the suction air volume is increased to an air volume that prevents the defecation gas from leaking outside from the bowl 2a and does not fluctuate from such air volume. Further, the toilet lid opening / closing device 40 is controlled to open the toilet lid in the measurement mode.

In the measurement start preparation step S <b> 2, when the odorous gas concentration detected by the odorous gas sensor 26 is high, the control device 22 performs sterilization in the bowl 2 a by the toilet sterilization device 48.
Further, in the measurement start preparation step S2, when the humidity measured by the humidity sensor 30 is a value that is not suitable for the measurement of the defecation gas by the odorous gas sensor 26, the control device 22 sends a signal to the humidity adjustment device 59. To control the humidity in the bowl to an appropriate value.

  In the measurement start preparation step, when the toilet seat 4 is cleaned with a sheet using an alcohol-based disinfectant or spraying, the odorous gas sensor 26 reacts with alcohol and the gas concentration value increases rapidly. Thus, when the gas concentration measured by the odorous gas sensor 26 increases rapidly, the data analysis device 60 displays a warning on the display device 68.

In addition, the data analysis device 60 stores the measurement value obtained by the odorous gas sensor 26 as an environmental reference value that is a noise level serving as a base for defecation gas measurement. Based on this environmental reference value, the data analysis device 60 determines whether or not measurement is possible. If the data analysis device 60 determines that the noise level is being measured or cannot be measured, the display device 68 causes the display device 68 to read “Preparing for measurement! ”Is displayed to prompt the subject to wait for defecation.
Thus, in the measurement start preparation step S2, noise caused by odorous gas remaining before the subject entered the toilet room, or subject noise caused by odorous components adhering to the entered subject. Is determined before the subject is seated, and is stored as an environment / subject-derived noise reference value, and whether or not measurement is possible is determined.

Next, when the seating detection sensor 36 detects that the subject is seated, the control device 22 transmits a signal indicating that the measurement reference value setting step S3 is started to the data analysis device 60 via the transceiver 56. The measurement reference value setting step S3 is performed in synchronization with the data analysis device 60. In addition, when the seating detection sensor 36 repeats detection and non-detection a predetermined number of times, it is an effect of cleaning of the toilet seat by the subject, and in such a case, it is desirable to return to S1.
In the measurement reference value setting step S <b> 3, the data analysis device 60 performs subject adhering odor noise determination, which is determination of a noise level caused by the subject, based on the measurement value measured by the odorous gas sensor 26. That is, when the measured value measured by the odorous gas sensor 26 is sufficiently lowered and not stable, it is determined that there is a possibility that sterilization with an alcohol-based disinfectant or the like has been performed, and FIG. Continue to display “Preparing for measurement! Please wait if you can” as shown below. Alternatively, when the noise level caused by the subject is equal to or higher than a predetermined value, the data analysis device 60 sends a signal to the nozzle driving device 42 which is a local cleaning device to activate it, and performs the subject's tail washing. Alternatively, the data analysis device 60 notifies the subject by the display device 68 so that the subject performs the butt washing. As described above, the execution of the buttocks cleaning by the data analysis device 60, the notification for prompting the notification, and the notification that the noise to the subject is large, the second noise correspondence that reduces the subject noise by a measure different from the first noise handling means. Functions as a means. Further, the first noise countermeasure means described above is executed when the subject does not enter the toilet room R, whereas the second noise countermeasure means is executed when the subject enters the toilet room R. The On the other hand, when the measured value measured by the odorous gas sensor 26 is sufficiently lowered, this display is deleted. If the measured value measured by the odorous gas sensor 26 does not decrease sufficiently even after a predetermined time has elapsed, the data analysis device 60 stops measuring the physical condition and displays the fact on the display device 68 to indicate the subject. To inform. As described above, the data analysis device 60 stops the physical condition measurement of the subject when it is determined that the gas component in the bowl 2a before the defecation period of the subject is not suitable for measurement. Function.

In the measurement reference value setting step S3, the data analysis device 60 sets a reference value for gas amount estimation based on the gas concentration measured by the odorous gas sensor 26, as will be described in detail later.
Next, as will be described in detail later, when the measured value by the odorous gas sensor 26 greatly rises from the reference value, the data analysis device 60 determines that the subject has performed excretion. The data analysis device 60 performs the measurement step S4 until it is detected by the seating detection sensor 36 that the subject has left the seat after it is determined that the subject has excreted.

In the measurement step S4, the control device 22 includes a hydrogen gas sensor 24, an odorous gas sensor 26, a carbon dioxide sensor 28, a humidity sensor 30, a temperature sensor 32, an entrance detection sensor 34, a seating detection sensor 36, and defecation / urination. The detection data measured by the detection sensor 38 is stored in the storage device for each subject specified by the subject specifying device 62. The control device 22 transmits these measurement values stored in the storage device to the data analysis device 60 via the transceiver 56 after the measurement step S4 ends. In the present embodiment, the measurement value is transmitted from the control device 22 to the data analysis device 60 after the measurement step S4 ends. However, the measurement value is not limited to this, and may be transmitted in real time in parallel with the measurement.
Further, the control device 22 starts the measurement of the defecation gas even when the subject does not input the information for identifying the subject to the subject identifying device 62. The detection data detected before the information is input is stored in the storage device in association with the input subject information when the subject inputs the subject information during one stool. This is a practical device tailored to the characteristics of defecation so that various inputs can be made after calming down in a tight situation such as defecation. Further, if the subject does not input subject information even after a predetermined time has elapsed after the start of measurement, a message prompting the subject to input is output from the display device 68 and the speaker 70 to notify the subject. Thereby, a test subject's forgetting input can be prevented.

  At the same time, as in the measurement reference value setting step S3, the data analysis device 60 determines whether or not measurement is possible. If it is determined by the data analysis device 60 that measurement is possible, the data analysis device 60 uses the display device 68 as shown in the lower row of FIG. An indication that the measurement is being performed is presented to the subject.

Next, when it is detected by the seating detection sensor 36 that the subject has left the seat, the control device 22 transmits a signal indicating that the examination process S5 is started to the data analysis device 60 via the transceiver 56. When receiving this signal, the data analysis device 60 starts the medical examination step S5.
First, the data analysis device 60 calculates the measurement reliability, which will be described in detail later, based on the measurement values measured by the sensors.
On the other hand, the control device 22 prohibits the flush toilet 2 from being washed when information for identifying the subject is not input even after the subject has left the seat. That is, when the subject specifying information is not input, even if the subject operates a cleaning button (not shown) of the remote controller 8, the control device 22 does not discharge the cleaning water of the flush toilet 2 and prompts input. Is displayed. Thereby, it is possible to strongly urge the subject to input subject identification information.

Further, as will be described in detail later, the data analysis device 60 estimates the gas amounts of odorous gas and hydrogen gas (health gas).
Further, in the screening process S5, the data analysis device 60 analyzes the physical condition of the subject based on the temporal changes of the plurality of detection data detected in a plurality of stool performed within a predetermined period and stored in the storage device. A medical examination result is calculated and a time-lapse diagnosis based on the stored value is performed. Then, the advice content based on the diagnosis over time is selected. As shown in the third row of FIG. 5, the data analysis device 60 displays the selected advice content on the display device 68 as a message related to health management. In the example shown in FIG. 5, the current physical condition of the subject falls under “physical illness” as a result of the screening, and advice is “The intestinal environment seems to be bad. Try to live a healthy life.” It is displayed.

  Further, below the examination result, the amount of health gas such as hydrogen gas and carbon dioxide gas in this measurement and the amount of poor physical condition gas such as odorous gas are displayed. Under the advice, measurement results for the past four times are also displayed. Further, when the subject presses the “detail screen” button on the display screen, a table showing the physical condition change of the subject for the past month is displayed. This display will be described later. As described above, the analysis result displayed on the display device 68 of the remote controller 8 includes only the physical condition, advice, and physical condition change (history of measurement data), and cancer that is displayed on the medical institution terminal 16. Notifications regarding disease determination results are not included. These analysis results may be notified to the subject terminal 14.

  Further, as shown at the bottom of FIG. 5, the reliability of the current measurement data is displayed at the bottom of the display device 68. In the example shown in FIG. 5, the reliability is displayed as “4”, which is relatively high. When the reliability is low, the reason why the reliability has decreased and advice for improving the reliability are displayed under the reliability display. For example, if the residual gas noise caused by the gas remaining in the bowl or the subject noise caused by the subject is large, the reliability is lowered and the subject is notified that the noise affects the measurement result. . Therefore, the display of reliability by the display device 68 functions as noise countermeasure means. The calculation of reliability will be described later.

Next, when the control unit 22 detects that the subject has left the room by the entrance detection sensor 34, the control unit 22 transmits a signal indicating that data transmission is performed to the data analysis device 60 via the transceiver 56. When receiving this signal, the data analysis device 60 performs a communication step S6.
In the communication step S6, the data analysis device 60 obtains the information for identifying the subject specified by the subject specifying device 62, the data measured by various sensors, the calculated reliability, the measurement date / time information, and the defecation / urination detection sensor 38. The notification data including the flight status information regarding at least one of the flight volume and the flight status and the bowel movement history information are transmitted to the server 12 via the network. The server 12 records the received information in a database.

In addition, after the subject leaves the room by the entrance detection sensor 34, the control device 22 performs a post-measurement environment maintenance step S7.
The control device 22 measures the gas concentration by the odorous gas sensor 26 in the post-measurement environment maintenance step S7. When the gas concentration measured by the odorous gas sensor 26 is larger than a predetermined value even after a predetermined time has elapsed after the end of the defecation period, the control device 22 has stool adhesion on the bowl 2a of the flush toilet 2 And the wash water stored in the wash water tank by the toilet flushing device 46 is discharged into the bowl 2a to wash the inside of the bowl 2a, or the hypochlorine from tap water by the toilet flushing device 48 Disinfecting water such as acid water is generated, and the generated disinfecting water is sprayed on the bowl 2a to sterilize the bowl 2a.

  The additional toilet flushing by the toilet flushing device 46 and the sterilization of the bowl 2a by the toilet flushing device 48 function as a residual gas removing means for reducing the concentration of the remaining odorous gas. Preferably, the toilet cleaning performed automatically by the residual gas removing means is set to have a higher cleaning power than the normal toilet cleaning performed by the subject operating a cleaning switch (not shown) of the remote controller 8. Keep it. Specifically, in the toilet bowl cleaning performed by the residual gas removing means, it is preferable to set a large number of times of discharge of the cleaning water to the bowl 2a or to set a high flow rate of the cleaning water. Further, the sterilization of the bowl 2a performed by the residual gas removing means is performed by setting the sterilization power stronger than the normal bowl sterilization performed by the subject operating the sterilization switch (not shown) of the remote controller 8. deep. Specifically, in the bowl sterilization performed by the residual gas removing means, the sterilization water having a higher concentration than that of the normal sterilization is sprayed or a large amount of the sterilization water is sprayed.

Furthermore, if the gas concentration measured by the odorous gas sensor 26 is greater than a predetermined value even after a predetermined time has elapsed after the end of the defecation period, the residual gas removing means determines that the duct 18a is dirty. The duct cleaner 58 is activated. The duct cleaner 58 cleans the inside of the duct 18a attached to the suction device 18 with hypochlorous acid or the like obtained by electrolyzing tap water.
In addition, the residual gas removing means is a flush toilet when the gas concentration measured by the odorous gas sensor 26 is not sufficiently lowered even when the above washing and sterilization processes are executed and is larger than a predetermined value. 2 is displayed on the display device 68.

  In the post-measurement environment maintenance step S7, the control device 22 changes the sensor heating heater 54, the suction device 18, and the toilet lid opening / closing device 40 to the measurement standby mode, and ends one measurement.

Next, the physical condition display table will be described with reference to FIG. This physical condition display table is a table displayed by pressing the “detail screen” button on the display screen shown in FIG. 5.
In the storage device on the remote control 8 side, the physical condition display table, the date and time of defecation of each subject in association with the subject identification information, and past measurement data are recorded for each subject. The past measurement data stored in the storage device on the remote control 8 side may be data for the entire period during the defecation period, but due to the relationship with the capacity of the storage device, it is discharged by the first excretion action during the defecation period. The measurement data of the defecation gas (measurement data of the first excretion action period) is preferable.

  As shown in FIG. 6, the physical condition display table is a table determined based on the experiment conducted by the above-described inventors, and the vertical axis represents the odorous gas that is the first index (the poorly related gas on the display). Is a graph showing an index related to the amount of gas and a horizontal axis indicating the index related to the gas amount of health-related gas as the second index. The first index is related to the amount of odorous gas based on the first detection data detected by the gas detection device 20, and the second index is the second detection data detected by the gas detection device 20. Based on the amount of hydrogen gas, which is a health gas. On the display device 68 of the remote controller 8, the measurement results of the defecation gas of the subject are displayed as plot points over time on such a physical condition display table having a vertical axis and a horizontal axis. That is, as shown in FIG. 6, the plot point representing the latest measurement result of the same subject is “1”, the previous result is “2”, and the previous result is “3”. . . As a result, the past 30 plot points are displayed together with numbers. Thereby, the test subject can recognize the temporal change of his / her physical condition. In this embodiment, the number is 30 times, but it may be several weeks or months, and may be a year by considering that the progression of cancer is a year. It is more desirable for the subject to be able to change the display range according to the situation. Furthermore, when the display range is large, the display method is easy to see, such as one year or two years on a monthly average. It goes without saying that it is even better to change in consideration of the above.

  Further, in the physical condition display table, “disease suspect level 2”, “disease suspect level 1”, “physical condition deficit level 2”, “physical deficit level” are set in accordance with the relationship between the index related to health gas and the index related to odorous gas. A plurality of regions are set according to whether the physical condition is good, such as “1” and “good physical condition”. Here, as shown in FIG. 6, “disease suspicion level 2” corresponding to the state of the worst physical condition is that the amount of odorous gas is the largest and the amount of healthy gas is the smallest in the physical condition display table. It is set in the upper left area. On the other hand, “good physical condition” corresponding to the best physical condition is set in the lower right region of the physical condition display table where the amount of odorous gas is the smallest and the amount of healthy gas is the largest. The areas of “disease suspicion level 1”, “physical condition level 2”, and “physical condition level 1” indicating physical condition levels between these are set in order from the upper left as a band-like area that rises to the right on the physical condition display table. Has been. Such a physical condition display table is set in advance according to the weight, age, sex, etc. of the subject. By displaying plot points based on the first and second indices on this table, the detection data and the subject are displayed. Analysis based on information can be performed.

As described above, in the present embodiment, since the two indexes of the index regarding the gas amount of the odorous gas and the index regarding the gas amount of the health-related gas are used, the change in the physical condition and the physical condition of the subject can be described in more detail. Can be evaluated. For example, even if the amount of healthy gas that indicates good physical condition is large, if the amount of odorous gas is also large, the evaluation is not the most satisfactory level (in the physical condition display table). Upper right area). On the other hand, even if the amount of healthy gas that indicates good physical condition is very small, if the amount of odorous gas is small, the evaluation is not the most bad level (physical condition display table). Lower left area).
In addition, for example, the boundary line between “physical condition level 1” and “physical condition level 2” indicating a state of poorer physical condition indicates that the index for the amount of healthy gas on the horizontal axis increases and the odor characteristic on the vertical axis. The “physical condition level 2” representing a state of poor physical condition is distributed on the larger side of the index related to the odorous gas amount of the boundary line. Since the boundary line is set in this way, in the present embodiment, even if the index related to the amount of healthy gas on the horizontal axis is the same value, the physical condition depends on the value of the index related to the amount of odorous gas on the vertical axis. The evaluation will be different. In order to obtain an equivalent evaluation, the value of the health gas amount on the horizontal axis needs to increase as the value of the odorous gas amount on the vertical axis increases.

  Further, advice corresponding to the physical condition is recorded in the storage device on the remote controller 8 side. Specifically, the advice “please go to the hospital” for the physical condition “suspected disease level 2”, the advice “recommend to the hospital” for the physical condition “suspected disease level 1”, the physical condition “physical condition” “Unsatisfactory level 2” suggests that “disease concerns will increase. Stress reduction and lifestyle improvement will be urgently improved”, but “physic condition level 1” indicates “intestinal environment seems to be bad. The advice “Let's keep life” is recorded in association with the advice “physical condition is good” in association with the physical condition “good physical condition”. On the physical condition display table, advice corresponding to the area where the latest plot point is located is displayed together with the plot points indicating the physical condition of the subject.

  However, the plot points shown on the physical condition display table of the display device 68 of the remote controller 8 do not indicate the analysis results analyzed by the data analysis device 60 as they are, but are plotted at positions moved with predetermined corrections. A dot is shown. Here, the disease assumed to be detected by the biological information measurement system 1 of the present embodiment is colon cancer or the like, and such a disease does not progress rapidly within a few days. On the other hand, the living body information measurement system 1 of the present embodiment sucks the defecation gas from the bowl 2a of the flush toilet 2 installed in the toilet room R and analyzes the sucked gas. I can't do it. In addition, when the subject is wearing perfume, or when the gas reacting with the odorous gas sensor 26 such as odorous gas remains in the toilet room R, an error occurs in the physical condition measurement result due to various factors. There is a fear.

For this reason, if the displayed physical condition swings to the side with a bad physical condition based on one measurement result of a test subject, an unnecessary psychological burden is given to the test subject. In addition, if the physical condition measurement result fluctuates greatly for each measurement, the test subject's confidence in the physical condition measurement result is lost. For this reason, in the biological information measurement system 1 of the present embodiment, the analysis result obtained by the data analysis device 60 is corrected so that the displayed measurement result does not fluctuate greatly for each measurement. However, the detection data stored in the storage device of the remote controller 8 and the detection data transmitted and stored in the server 12 are stored together with the reliability of the detection data without correction. The storage device of the remote controller 8 may store the coordinates of the display that is corrected and displayed in consideration of the next display. Thus, the detection data obtained by the biological information measurement system 1 of the present embodiment are not all highly reliable. However, it is possible to detect changes in the physical condition of the subject over a long period of time by acquiring data on daily defecation behavior continuously for a long period and accumulating the data in the storage device of the remote control 8 or the server 12. Thus, before the subject's physical condition is greatly deteriorated, attention can be drawn so as not to cause a large disease such as colorectal cancer.
As described above, the correction applied to the detection data functions as an output result stabilization unit that suppresses the physical condition index of the subject output to the display device 68 from being shaken in the direction of poor physical condition due to a detection error or the like.
In the present embodiment, the detection data stored in the storage device of the remote controller 8 does not necessarily have to be corrected, and the corrected detection data may be recorded.

Next, correction of plot points will be described with reference to FIG.
FIG. 7A is a diagram illustrating an example of movement by correction of the plot points of the latest data, and FIG. 7B is a diagram illustrating limit processing for the movement amount of the plot points.
First, as shown in FIG. 7A, the plot point calculated by the data analysis device 60 based on the latest measurement is “1”, and this point is the center of gravity G of the plot points of the past 30 measurement data. It is greatly deviated from. Thus, if the plot point “1” that is significantly deviated from the distribution of the measurement data up to the previous time is displayed, an excessive psychological burden is given to the subject. Since cancer risk does not increase in a day, such a large change in measurement data may be the result of bad lifestyles the previous day or the effects of noise rather than an increased risk of cancer. high. Therefore, in this embodiment, the correction is performed in consideration of not giving an excessive psychological burden to the subject. For this reason, when the latest analysis result changes to the poor physical condition side (upper left direction), the data analysis device 60 determines the position where the plot point “1” is displayed on the physical condition display table in the current measurement data. Based on the reliability, the display is moved by a predetermined distance in the direction of the center of gravity G. That is, in the example shown in FIG. 7A, the latest measurement data is obtained at the position of the plot point “1 ′” corrected so that the plot point “1” is moved in the direction of the center of gravity G (good physical condition side). Is displayed (actually, the plot point “1” is not displayed). The movement distance of the plot point “1” in the direction of the center of gravity G is increased as the reliability of the latest measurement data is lower. In this way, the psychological burden on the subject can be reduced by moving the latest plot point to the side showing good physical condition. The calculation of the reliability of the measurement data will be described later. However, the data analysis device 60 decreases the correction amount (the movement amount due to the correction) when the latest plot point moves to the poor physical condition side for a predetermined number of times or more. Thereby, the test subject can recognize that his / her physical condition is deteriorating and can urge him to try to improve his / her physical condition.

  In addition, when the latest physical condition measurement has a very large noise, and the latest plotted point is greatly deviated, even if the correction described in FIG. It can be considered that the body moves greatly toward the poor physical condition. For this reason, as shown in FIG. 7B, a predetermined limiter is applied to the moving distance of the latest data from the center of gravity G. That is, the movement of the latest data from the center of gravity G is limited to ± 40%, and even when the latest data is deviated by 40% or more from the coordinates of the center of gravity G, the latest data is plotted at a position deviated by 40%. . For example, when the coordinate value of the center of gravity G is (x, y), the range of coordinate values in which the latest data can be plotted is (0.6x to 1.4x, 0.6y to 1.4y), which is not more than this. It is not plotted at the specified position.

  Furthermore, when the movement of the latest data exceeding 40% continues twice, the range in which the latest data can be moved is reduced to 60%. Thereby, for example, when the coordinate value of the center of gravity G is (x, y), the range of coordinate values in which the latest data can be plotted is (0.4x to 1.6x, 0.4y to 1.6y). Be changed. This is because when such a large amount of latest data movement occurs frequently, it is considered that a change in the physical condition of the subject is reflected rather than a simple measurement error.

Next, the diagnosis table on the server side will be described with reference to FIG. The following processing in the server is performed by a data analysis circuit provided in the server 12.
FIG. 8 is a diagram illustrating an example of a diagnostic table displayed on the server side. As described above, in the biological information measurement system 1 of the present embodiment, the measurement data for the entire defecation period analyzed by the data analysis device 60 is sequentially transmitted to the server 12 via the Internet and recorded in the database on the server side. Has been. The accumulated measurement data can be displayed on a medical institution terminal 16 installed in a medical institution registered by a subject or the like. For example, when the subject receives a message “Recommend Visit” displayed on the display device 68 of the remote controller 8 and the subject visits a medical institution, the medical institution terminal 16 can display a diagnostic table for the server. It is like that. In the diagnostic table, the vertical axis and the horizontal axis represent the same indices as the physical condition display table displayed on the display device 68 of the remote controller 8, but the physical condition assigned to each region is more specific. It has become. The doctor can refer to the physical condition of the subject over time by referring to the measurement data of the subject recorded in the database on the server 12 side at the medical institution terminal 16, which is useful for examination and treatment in the medical institution. Can do. Alternatively, when the measurement data transmitted to the server 12 indicates a significant physical condition, the subject's terminal 14 for the subject is notified so as to receive a medical examination from a medical institution in which the subject is registered. The present invention can also be configured.

  The diagnostic table displayed on the medical institution terminal 16 is different from the physical condition display table displayed on the display device 68 of the subject as described above. As shown in FIG. 8, the diagnosis table on the server 12 side is a table determined based on the experiment conducted by the inventors described above, and the relationship between the amount of healthy gas and the amount of odorous gas. Corresponding to the disease state is associated. Specifically, in the diagnostic table, depending on the relationship between the amount of healthy gas and the amount of odorous gas, “large colorectal cancer concern”, “early colorectal cancer concern large”, “early colorectal cancer suspect” , “Physical dysfunction level 3”, “Physical dysfunction level 2”, “Physical dysfunction level 1”, “Health condition”, “Intestinal dysfunction (diarrhea)”, and “Suspected mismeasurement” are set. .

  On the server-side diagnosis table set in this way, the past measurement data of the subject is plotted over time, and based on the position of the plotted point, “large colorectal cancer concern”, “early early colorectal cancer concern”, “early” Judgment regarding cancer diseases such as “suspected colorectal cancer” is performed. Note that the plot points displayed in the server-side diagnosis table are not corrected or limited, and the doctor comprehensively determines the displayed data together with the reliability. In addition, since the diagnosis table and the determination result displayed on the medical institution terminal 16 are set on the assumption that the doctor refers to the diagnosis table, the name of the disease and the degree of progression thereof are displayed more specifically. It has become. In addition, when the plot point is located in a region related to cancer diseases such as “large concern about colon cancer”, “great concern about early colorectal cancer”, “suspected early colorectal cancer” over a long period of time, It is displayed that there is a high possibility of The doctor can comprehensively judge the indicated plot points, the reliability of measurement, and the like, and can tell the subject of his / her physical condition. In addition to the diagnostic table in which the past measurement data is plotted over time, the medical institution terminal 16 also includes the reliability calculated with reference to the database, the data measured by various sensors, the stool volume, and the stool status. At least one of the flight status information and the bowel movement history information can be displayed.

  In addition, a large number of subject-side devices 10 are connected to the server 12 and measurement data of a large number of subjects are accumulated. Further, the database on the server 12 side stores data on the medical condition of a subject who has visited a medical institution based on certain measurement data as a result of a precise examination at the medical institution. Yes. Therefore, the data measured by the biological information measuring system 1 of the present embodiment and the data relating the actual medical condition can be accumulated on the server 12 side. The diagnosis table on the server side is sequentially updated based on the measurement data of a large number of subjects accumulated in this manner, and more accurate diagnosis can be performed based on the updated diagnosis table. Also, the physical condition display table can be updated based on the data accumulated on the server side. The physical condition display table updated based on the data on the server side is downloaded to each subject apparatus 10 via the Internet and displayed on the display device 68 of the remote controller 8. However, even if the physical condition display table is updated, the physical condition display table that is directly presented to the subject has been corrected to an appropriate content to be shown to the subject.

Next, with reference to FIG. 9, the data detected by each sensor provided in the biological information measurement system 1 of the present embodiment and the estimation of the gas amount based thereon will be described.
FIG. 9 is a graph schematically showing detection signals from the sensors provided in the biological information measurement system 1 in one defecation of the subject. FIG. 9 shows waveforms of detection signals from the hydrogen gas sensor 24, the carbon dioxide sensor 28, the odorous gas sensor 26, the humidity sensor 30, the temperature sensor 32, the seating detection sensor 36, and the entrance detection sensor 34 in order from the top. .

  The estimation of the gas amount based on the detection signal of each sensor is performed by the data analysis device 60 which is a physical condition determination unit for determining the physical condition, that is, the CPU and storage device built in the remote controller 8 or the CPU of the server 12 and This is done in the storage device. The data analysis device 60 reads from the storage means of the remote controller 8 and starts the excretion action start time point, and the gas amount change rate threshold value and the gas amount that enables stable measurement. A stability threshold is set in advance. In addition, fart is included in the excretion act here.

First, at time t ₁ in FIG. 9, the room entry detection sensor 34 detects the entrance of the subject. The data analysis device 60 measures the amount of odorous gas with the odorous gas sensor 26 even in a state (time t _{0 to} t ₁ ) before the subject enters and exits the toilet room R by the entry detection sensor 34. . Even in this state, the odorous gas sensor 26 reacts and outputs a certain level of detection signal due to the influence of the fragrance and the residual stool adhering to the bowl 2a of the flush toilet 2. Thus, the measured value of the odorous gas sensor 26 before the subject enters the room is set as the environmental reference value of the gas amount that is residual gas noise. In the state before the entrance detection sensor 34 detects the entrance, the odorous gas sensor 26 and the suction device 18 are in a power saving state, and the sensor heating heater 54 for heating the detection portion of the odorous gas sensor 26 is used. The temperature is set low, the rotational speed of the suction fan 18c is suppressed, and the flow rate passing therethrough is also low.

Next, when the entrance detection sensor 34 detects that the subject has entered the room at time t ₁ , the odorous gas sensor 26 and the suction device 18 are activated. As a result, the temperature of the sensor heating heater 54 of the odorous gas sensor 26 rises, and the rotational speed of the fan of the suction device 18 increases, so that a predetermined flow rate of gas is sucked. As a result, the value detected by the temperature sensor 32 rises once and then converges to an appropriate temperature (from time t _{1 in} FIG. 9). In the present specification, a period (time t _{1 to} t _{8 in} FIG. 9) in which the entrance detection sensor 34 detects entry of the subject into the toilet room R is referred to as a single “defecation action”. . When the subject enters the room, the detection signal detected by the odorous gas sensor 26 increases. This is because the odorous gas sensor 26 reacts to the body odor of the subject, the perfume used, the hairdressing agent, and the like. That is, the increase from the residual gas noise before the subject enters the toilet room R is subject noise caused by the subject. The noise measurement circuit built in the data analysis device detects residual gas noise caused by the gas remaining in the bowl 2a and subject noise caused by the subject. The odorous gas sensor 26 is set to extremely high sensitivity for the purpose of detecting an extremely small amount of odorous gas contained in the ppb order in the defecation gas discharged into the toilet bowl. It also reacts to odors that cannot be felt.

Next, at time t ₂ in FIG. 9, when the subject is seated on the toilet seat 4 is detected by the seating detection sensor 36, this point is set as the starting point of one bowel movement period of the subject. In the present specification, a period (time t _{2 to} t _{7 in} FIG. 9) in which the seating detection sensor 36 detects the subject's seating on the toilet seat 4 is referred to as one “defecation period”. Then, the detected value by the odorous gas sensor 26 after the start time (time t ₂ ) of the defecation period and immediately before the start of the first excretion action (time t _{5 in} FIG. 9) is used as the reference value of the residual gas. Set as.

In the example shown in FIG. 9, the detected value of the humidity sensor 30 increases between time t _{3 and} t ₄ after the subject is seated at time t ₂ . This is the detection of urination of the subject, and since the detection value of the odorous gas sensor 26 has hardly changed, the data analysis device 60 determines that no excretion is performed. Then, the detection value of the hydrogen gas sensor 24 and odorous gas sensor 26 is up abruptly at time t _5. As described above, when the detected value of the odorous gas sensor 26 suddenly rises during the defecation period after the subject is seated, the data analysis device 60 determines that the excretion action has been performed.

When the excretion action is performed, the data analysis device 60 makes the fluctuation range which is an increase from the reference value of the residual gas (the hatched portion of the graph of the detection value by the odorous gas sensor 26) of the detection value by the odorous gas sensor 26 Based on this, the amount of odorous gas discharged from the subject is estimated. That is, the data analysis device 60 sets the value of the detected data at the start of the defecation period by the subject as a reference value that is a noise level caused by the subject, and the amount of change from the reference value of the detected data detected by the odorous gas sensor Based on the above, the odorous gas associated with the first excretion is estimated. Thus, since the data analysis device 60 estimates the odorous gas amount based on the difference from the reference value of the detection data, the influence of noise caused by the subject can be suppressed. Therefore, the circuit built in the data analysis device 60 that performs this calculation functions as a noise suppression circuit and also functions as a second noise countermeasure unit that reduces the influence of subject noise. Further, when the noise level caused by the subject is equal to or higher than a predetermined value, the data analysis device 60 notifies the display device 68 of the fact. Details of the estimation of the odorous gas amount will be described later. Similarly, the data analysis device 60 estimates the amount of hydrogen gas discharged from the subject based on the increase in the detected value by the hydrogen gas sensor 24 from the reference value of the residual gas. After excretion by the subject (time t _{5 in} FIG. 9), the detection values by the odorous gas sensor 26 and the hydrogen gas sensor 24 return to the reference value of the residual gas. Next, when a second excretion action is performed by the subject at time t ₆ , the detection values by the odorous gas sensor 26, the carbon dioxide sensor 28, and the hydrogen gas sensor 24 rapidly rise again. As for the second excretion action, similarly to the first excretion action, the amount of odorous gas and hydrogen gas discharged from the subject is estimated based on the increase from the reference value of the residual gas. In addition, when estimating the amount of odorous gas and hydrogen gas in the second and subsequent excretion actions, the standard value is changed each time in consideration of the effects of floating stools floating in the sealed water in the bowl. May be.

  In this way, when the subject has performed excretion multiple times after entering the room (that is, when a change in the gas amount equal to or greater than a predetermined threshold is detected multiple times), the stool associated with each excretion The amount of gas is estimated in the same way. When calculating the amount of defecation gas for the second and subsequent excretion actions, the reference value may be changed every time in consideration of the effect of floating stool floating on the sealed water in the bowl.

Then, by the seating detection sensor 36 unseated subjects completed defecation period once detected at time t ₇ in FIG. 9, the entrance detecting sensor 34 at time t ₈ the exit of the subject is detected, defecation once The action ends. The data analysis device 60 estimates the amount of stool gas associated with each excretion until the entry detection sensor 34 detects that the subject has left the room.

  Based on the amount of the defecation gas measured in this way, the physical condition of the subject is determined by the remote controller 8 and the server 12. At this time, it is desirable that the remote controller 8 can display the measurement of the physical condition during the defecation period or immediately after the defecation period. And if excretion is performed several times, since the stool accumulates in the bowl 2a, the accuracy of the measurement of the gas amount by the odorous gas is lowered. On the other hand, during the first excretion action, the defecation gas that reaches the most downstream of the large intestine is discharged, so that the most useful information for physical condition measurement can be obtained, and the measurement reliability is high. Based on these, on the remote control 8 side, when the amount of defecation gas (the amount of odorous gas and hydrogen gas) from the first excretion can be estimated, the subject is based only on the amount of defecation by the first excretion. Is measured and displayed on the display device 68 of the remote controller 8. Or a physical condition can also be measured so that the weighting of the measured value based on the detection data regarding the initial excretion action in one defecation action becomes heavier than the weighting regarding the late excretion action.

  On the other hand, on the server 12 side, it is desirable to perform a more accurate determination by using the total amount of defecation gas resulting from a plurality of excretion actions. For this reason, on the server 12 side, the total amount of defecation gas (total amount of odorous gas and hydrogen gas) due to multiple excretion actions, more preferably all included in one defecation period from sitting to sitting The physical condition of the subject is determined based on the total amount of defecation gas due to the excretion action. The determination of the physical condition of the subject on the server 12 side does not necessarily need to be the total amount of defecation gas due to all excretion actions included in one defecation period, but all excretion included in many defecation periods. It is preferably based on the total amount of defecation gas due to action.

  Here, in the example shown in FIG. 9, the reference value of the residual gas is constant, but even when the reference value is not constant, the amount of odorous gas discharged can be estimated. For example, when the detected value detected by the odorous gas sensor 26 tends to increase, as shown in FIG. 10A, the increase in the detected value detected by the odorous gas sensor 26 before the start of the excretion action is performed. The auxiliary line A drawn with the rate of change continuing before and after the excretion action is taken as the reference value. The amount of the odorous gas can be estimated by determining that the time when the inclination of the detection value by the odorous gas sensor 26 greatly changes from the auxiliary line A is the time when one excretion is started.

  In addition, since estimation of the amount of odorous gas sets the residual gas before excretion as a reference value, and estimates based on the difference from a reference value, it is desirable that a reference value does not change a lot. For this reason, in the data analysis device 60, the change rate of the detected value detected by the odorous gas sensor 26 before the start of the excretion action (that is, the change rate of the reference value = the slope of the auxiliary line A) is equal to or less than a predetermined threshold value. In such a case, the notification means including the display device 68 of the remote controller 8 or the speaker 70 displays that the estimation accuracy of the defecation gas amount is high.

  On the other hand, when a spray-type fragrance is sprayed just before the excretion action, or when a disinfecting sheet or disinfection spray of an alcohol-based toilet seat disinfectant is used, it is detected by the odorous gas sensor 26 before the excretion action. The detection value fluctuates greatly. If such a state is set as a reference value, the amount of odorous gas cannot be estimated accurately. For this reason, the data analysis device 60 displays the display device 68 or the speaker of the remote controller 8 when the reference value, which is a noise level caused by the subject, is a predetermined value or more, or when the change rate of the reference value is a predetermined threshold value or more. The notification means consisting of 70 notifies that the estimation accuracy of the defecation gas amount is low. When excretion is performed despite such notification, measurement for physical condition analysis is not performed or the measurement reliability is set low.

Next, with reference to FIG.10 (b), the use detection of the alcohol-type toilet seat sanitizer is demonstrated. FIG. 10B is a graph showing an example of a detected value by the odorous gas sensor 26 when the subject uses an alcohol toilet seat disinfectant.
At time t ₁₀ of FIG. 10 (b), after the entrance detecting sensor 34 is entry of the subject is detected, the detection value of the odorous gas sensor 26 gradually rises in response to body odor or the like of the subject. Next, when the subject takes out the toilet seat disinfecting sheet using the alcohol-based disinfectant at time t ₁₁ , the odorous gas sensor 26 reacts with the alcohol odor, and the detected value rises rapidly. At time t _12, subjects completed the eradication of the toilet seat 4, and to discard the eradication seat in the bowl 2a, alcohol-based detection value of the odor of gas sensor 26 immediately due to the high volatility starts to decline. Since this characteristic is different from the remaining off-flavor gas component, the inventors have found that the rapid increase in the detection value due to alcohol-based sterilization decreases after a while and measurement is possible. However, in the case of sterilization using an alcohol-based sterilization sheet, it may float in the sealed water when discarded. In this case, since the volatilization of the alcohol continues, the decrease tends to be delayed. Therefore, it is desirable to discharge the sheet as follows.

Then, after the seating detection sensor 36 detects the seating of a subject at time t _13, when the subject to perform a cleaning switch of washing by operating the (not shown) flush toilet second washing of the remote controller 8, distilled water bowl 2a Since the sterilization sheet floating on the odor gas sensor 26 is discharged, the detection value of the odorous gas sensor 26 rapidly decreases. When an alcohol-based disinfectant is used, the odorous gas sensor 26 generally changes in this way.

  For this reason, the toilet seat sanitization detection circuit built in the data analysis device 60 detects the entrance of the subject after the entrance detection sensor 34 detects the entrance of the subject and before the seat detection sensor 36 detects the seat of the subject. When the detected value rises rapidly over a predetermined value, it is determined that the subject has sterilized the toilet seat 4 and the like using an alcohol-based sterilizing agent. The present inventor can thus detect the sterilization action of the toilet seat 4, which is a specific action performed by the subject in the toilet room R, from the detection signals of the entrance detection sensor 34, the seating detection sensor 36, and the odorous gas sensor 26. Was found.

  In addition, when the toilet sterilization detection circuit detects the use of the alcohol-based sterilization agent and the washing toilet 2 is not washed for a predetermined time after the subject is seated, the sterilization built in the data analysis device 60 is performed. The noise handling circuit sends a signal to the toilet bowl cleaning device 46 to automatically execute toilet bowl cleaning. Furthermore, when the toilet seat disinfection detection circuit detects the use of the alcohol disinfectant, the disinfection noise countermeasure circuit increases the rotation speed of the suction fan 18c. As a result, the amount of gas sucked by the suction device 18 is increased, and the alcohol component volatilized by toilet seat sterilization is positively deodorized by the deodorizing filter 78, thereby reducing the detection value of the odorous gas sensor 26. it can. That is, when the toilet seat sterilization detection circuit detects sterilization, the sterilization noise countermeasure circuit operates the deodorization device to reduce the influence of noise caused by the alcohol-based sterilization agent.

  Further, when the toilet seat sanitization detection circuit detects the use of the alcohol-based sanitizer and the detection value of the odorous gas sensor 26 is increasing, the sanitization noise response circuit stops the physical condition measurement and waits for defecation. A message is displayed on the display device 68 to notify the subject. The sterilization noise response circuit displays a message on the display device 68 to the subject so as to wait for defecation until the physical condition measurement is possible, and notifies the subject. Thereby, the influence of the noise resulting from an alcoholic disinfectant is reduced. On the other hand, the detection value of the odorous gas sensor 26 that has risen rapidly due to the use of the alcohol-based disinfectant begins to decrease when the subject finishes disinfecting.

  When the noise level detected by the odorous gas sensor 26 starts to decrease, the sterilization noise response circuit deletes the message waiting for the defecation displayed on the display device 68 and notifies that measurement is possible. To do. That is, in a situation where the noise level caused by the alcohol-based disinfectant tends to decrease, it is possible to detect the rising of the detection value of the odorous gas sensor 26 that tends to decrease. The data analysis device 60 detects the time point when the detection value of the odorous gas sensor 26 that tends to decrease rises as the release of defecation gas by the subject. However, in a state where the noise level detected by the odorous gas sensor 26 is not less than a predetermined rate of change, the sterilization noise response circuit stops displaying physical condition and continues displaying a message to wait for defecation. . That is, in a state where the noise level is drastically reduced, an increase in the detection value due to the release of the defecation gas is masked, and the release of the defecation gas cannot be accurately detected. In addition, it is desirable to stop the calculation while the reference value is greatly decreased because the error also increases.

  In addition, when the noise level is equal to or higher than a predetermined value due to the use of the alcohol-based disinfectant, the disinfecting noise countermeasure circuit stops the measurement for the physical condition measurement or sets the measurement reliability to be low. As described above, when the measurement reliability is set to be low, the plot points on the physical condition display table described with reference to FIG. 7A are corrected more greatly to the side showing good physical condition. That is, when the sterilization noise detection circuit detects the sterilization of the toilet seat, the sterilization noise correction circuit corrects the quality of the physical condition output by the display device 68 to the side indicating a good physical condition.

  On the other hand, when there are many attached stools in the flush toilet 2 or when a large amount of fragrance is used, the absolute value of the gas amount detected by the odorous gas sensor 26 increases, and in some cases, the detected value by the sensor In such a situation, it is difficult to accurately estimate the amount of odorous gas, which is a minute amount, because it saturates or falls out of a band with high measurement accuracy. For this reason, the data analysis device 60 does not perform measurement for physical condition measurement or sets the measurement reliability low even when the absolute amount of the reference value is equal to or greater than a predetermined threshold.

  Further, as described above, the measurement data of the gas amount of the odorous gas and the gas amount of the health gas of the new subject are sequentially accumulated in the database of the server 12. In the database of the server 12, the medical checkup result of cancer that the subject has received at the medical institution from the medical institution terminal 16 is recorded in association with the identification information of the subject. The server 12 updates the recorded diagnostic table based on the change in the history of the change in the gas amount of the odorous gas and the health-related gas, as well as the results of such a medical checkup for cancer.

  FIG. 11 is a diagram illustrating an example of updating the diagnosis table. For example, as a result of plotting and analyzing the measurement data A of the odorous gas and healthy gas of the subject in the old diagnostic table, even if it is determined as "suspected early colorectal cancer", Suppose this patient is diagnosed with early colorectal cancer. In such a case, as shown in FIG. 11, “large colorectal cancer concern” and “early large bowel cancer concern” are included so as to include a portion corresponding to measurement data A of a subject diagnosed with early colorectal cancer. , Expand the area of "suspected early colorectal cancer" and narrow the area of "hypophyseal level". On the contrary, for example, in the old diagnostic table, even if it is determined that “early colorectal cancer is suspected” from the correlation between the gas amounts of odorous gas and healthy gas, the result of the medical examination is suspected of cancer. If there are a large number of subjects diagnosed as having none, expand the “disease level” area, and narrow the “colon cancer concerns”, “early colorectal concerns”, and “early colorectal cancer suspects” areas . When the diagnostic table is updated, the areas of the display table are changed in the same manner.

  In addition, the server 12 stores a plurality of physical condition display tables that are categorized according to the tendency of the history of changes in the measurement data of the odorous gas and the health gas, and the attribute information such as the subject's weight, age, and sex. .

  When the subject-side device 10 wishes to perform a more detailed physical condition analysis, attribute information such as the subject's weight, age, and sex is registered in the server 12 together with the subject's identification information. Then, when the measurement data of the subject who desires this more detailed analysis is accumulated in the server 12, the server 12 selects a physical condition display table with conditions close to the history of changes in the attribute information and measurement data of the subject. . The server 12 transmits the selected physical condition display table to the subject apparatus 10 via the network. When the test subject side apparatus 10 receives a new physical condition display table from the server 12, the subject side apparatus 10 changes the already stored physical condition display table to the received physical condition display table. Thereby, in the subject side apparatus 10, the more accurate physical condition analysis according to a test subject's attribute and the log | history of measurement data can be performed.

  In the above-described embodiment, the subject-side device 10 is configured to store the history of the measurement data. However, the measurement data is not limited to this, and the measurement data is stored only in the database of the server 12, and the subject side The apparatus 10 may read a history of past measurement data from the database of the server 12 and perform a screening result calculation and a continuous diagnosis in the screening process S5.

  Here, the calculation method of the reliability in the screening process S5 of FIG. 4 will be described in detail below. As a characteristic of the semiconductor gas sensor used as the odorous gas sensor 26, not only the odorous gas but also the odorous gas around the fragrance, the sanitizing sheet, etc., and the odorous gas adhering to the body and clothes of the subject are detected. Sometimes. Furthermore, the detected value of the odorous gas detected by the semiconductor gas sensor varies depending on the state of the stool (for example, whether or not it is a diarrhea state) and the amount of stool. For this reason, when determining the disease regarding cancer, it is calculated | required that the magnitude | size of the influence of these off-flavor gas noises and the state of a stool can be evaluated. In the present embodiment, the reliability determination circuit provided in the data analysis device 60 of the subject apparatus 10 installed in the toilet room is used to measure the influence of such odor gas noise of the defecation gas, the state of the stool, and the like. An event that affects the accuracy is evaluated, and the measurement reliability is determined as an index indicating the accuracy of gas detection by the gas detection device 20.

  FIG. 12 is a diagram for explaining a method of determining the measurement reliability. In the following description, a case where correction is performed by the influence of the off-flavor gas adhering to the subject's body or clothes, the influence of humidity, the influence of temperature, and the influence of the number of defecation gases will be described as an example. The determination of the following measurement reliability is performed using a reliability determination circuit that determines the reliability of detection of odorous gas in the data analysis device 60 of the remote controller 8.

  The outputs from the hydrogen gas sensor 24, odorous gas sensor 26, carbon dioxide sensor 28, humidity sensor 30, temperature sensor 32, entrance detection sensor 34, seating detection sensor 36, and defecation / urine detection sensor 38 of the measuring device 6 are transmitted from the remote control 8. Are sent to the data analysis device 60. FIG. 12 shows an example of outputs from these sensors.

  In addition, a plurality of reliability correction tables for calculating the reliability are recorded in the data analysis device 60 of the remote controller 8 in advance.

  FIGS. 13 to 16 respectively show a subject-adherent off-flavor gas noise correction table for determining the influence of off-flavor gas adhering to the body and clothes of the subject, a humidity correction table for determining the influence of humidity, and the influence of temperature. It is a figure which shows the temperature correction table for performing, and the excretion count correction table for determining the influence by the frequency | count of excretion.

  The semiconductor gas sensor used as the odorous gas sensor 26 detects off-flavor noise (environmental noise) other than the defecation gas adhering to the subject. It can be said that the reliability of measurement is low when the amount of off-flavor gas components (noise amount) attached to the subject is large. For this reason, as shown in FIG. 13, in the test subject attached odor gas noise correction table, a correction value is determined for the amount of attached odor gas noise. Specifically, when the amount of the off-flavor gas component adhering to the subject is less than a predetermined value, the correction value is set to 1 as a value that is not corrected, and when the amount of the off-flavor gas component adhering to the subject is a predetermined amount or more. When the amount of noise of the off-flavor gas component adhering to the subject is too much larger than the predetermined amount, the negative correction amount from 1 is increased in order to gradually decrease the reliability value as the amount of off-flavor gas component increases. Is not measurable (correction value 0). The amount of attached odor gas noise is determined based on the detection data detected by the odorous gas sensor 26 during the non-defecation period before the seating detection sensor 36 detects that the subject has been seated. In addition, since the off-flavor gas component adhering to the subject affects the entire defecation period, not a part during the defecation period, the reliability is corrected over the entire defecation period. Hereinafter, this correction of reliability over the entire defecation period is referred to as “overall correction”.

  Further, when the subject urinates, the humidity in the bowl 2a increases, and the humidity of the gas that reaches the detection unit of the odorous gas sensor 26 increases. When the humidity of the gas that reaches the odorous gas sensor 26 increases, the resistance of the odorous gas sensor 26 changes and the sensor sensitivity decreases. Moreover, when urine is applied to the attached stool in the bowl 2a, the attached stool becomes soft from the dry state, and a large amount of defecation gas is temporarily released from the attached stool while the urine is applied again in the bowl 2a. There is. The defecation gas released from the attached stool may be detected by the odor gas sensor as noise when measuring the defecation gas released from the subject. For this reason, as shown in FIG. 14, in the humidity correction table, 1 is set when the humidity measured by the humidity sensor 30 is lower than a predetermined value, and when the humidity is higher than the predetermined value, the reliability increases as the humidity increases. Decreases and is not measurable (correction value 0) when the value exceeds the measurement limit value. Since the urination action is a temporary action, the humidity correction table is “partial correction” for correcting only the period during which the change in humidity measured by the humidity sensor 30 is observed. Note that, hereinafter, the correction of the reliability only in a specific period of the defecation period, or the correction of the whole defecation period, but the correction different in each period of the defecation period is referred to as “partial correction”.

  In addition, the semiconductor gas sensor used as the odorous gas sensor 26 is configured to emit odorous gas based on the oxidation / reduction reaction of oxygen and reducing gas adsorbed on the surface in a state where the detection unit made of tin dioxide is heated. Detected. For this reason, when the temperature of a detection part is higher or lower than a predetermined temperature range, sensor sensitivity will fall. For this reason, as shown in FIG. 15, in the temperature correction table, a correction value is determined according to the temperature detected by the temperature sensor 32. Specifically, when the temperature detected by the temperature sensor 32 is within an appropriate temperature range suitable for the measurement of the detection unit of the odorous gas sensor 26, the correction value is a value larger than 1 so as to increase the reliability. If the temperature detected by the temperature sensor 32 is slightly higher or lower than the appropriate temperature range, the correction value is set to a value less than 1 so as to decrease the reliability value, and further, detected by the temperature sensor. When the measured temperature is larger than the upper limit value of the measurable temperature or smaller than the lower limit value of the measurable temperature, the measurement is impossible (correction value 0). The temperature correction does not vary greatly during the defecation period, and is therefore an overall correction for correcting the entire defecation period.

  In addition, as described above, when performing the excretion action a plurality of times during a single defecation period, the amount of defecation gas itself is large (the amount of odorous gas is also large) in the first defecation period. The initial excretion action is more accurate than the later excretion action. For this reason, as shown in FIG. 16, in the excretion action frequency correction table, the first defecation gas correction value is set to a value larger than 1 so as to increase the reliability value, the second time is set to 1, and the third time and thereafter. The value was less than 1 and gradually decreased as the number of times increased. Thus, the first defecation gas is devised so as to be preferentially diagnosed. The excretion action frequency correction table corrects only the period during which defecation gas is detected, and is a partial correction.

As shown in FIG. 12, when the entrance detection sensor 34 detects the entrance of the subject at time t ₁ , the control device 22 of the measurement device 6 shifts from the pre-measurement environment maintenance process in the standby state to the measurement start preparation process. Then, the sensor heating heater 54 and the suction device 18 are driven. Thereby, the temperature detected by the temperature sensor 32 rises and converges to an appropriate temperature. Then, the data analysis device 60 of the remote controller 8 refers to the temperature correction table and refers to the correction value corresponding to the convergence temperature measured by the temperature sensor 32 during the non-defecation period before the seating detection sensor 36 detects the seating. To get. In the example shown in FIG. 12, the temperature correction value is 0.9.

Also. When the subject enters the room at time t ₁ , the detection data detected by the odorous gas sensor 26 increases due to the strange odor noise attached to the subject, and then converges to a certain value. Then, the seating by the seating detection sensor 36 at time t ₂ is detected. The data analysis device 60 of the remote controller 8 obtains a correction value corresponding to the detection data measured by the odorous gas sensor 26 in the non-defecation period before the seating detection sensor 36 detects the seating. In the present embodiment, the test subject adhesion odor gas noise correction value is 0.7.

Next, at time t ₃ , when the subject urinates during the defecation period after the seating detection sensor 36 detects the seating, the detection value by the humidity sensor 30 increases. The humidity increase detected by the humidity sensor 30 may be measured, for example, based on the humidity before the defecation period, that is, before the seating detection sensor 36 detects the seating. As described above, when an increase in the detection data is detected by the humidity sensor 30, the data analysis device 60 refers to the humidity correction table for the period during which the detection data is increasing, and corresponds to the increased detection data. Find the correction value. In the present embodiment, the partial correction value during the period in which the detection data from the humidity sensor 30 rises (that is, times t _{3 to} t ₄ ) is 0.6.

Next, when the subject performs an excretion action at times t ₅ and t ₆ , the change rate of the difference between the detection data detected by the odorous gas sensor 26 and the reference value is equal to or greater than a predetermined value. The analysis device 60 calculates the amount of gas accompanying this excretion action. At the same time, the data analysis device 60 refers to the frequency correction table according to the number of excretion actions within the defecation period, and the period corresponding to the first excretion action (that is, times t _{5 to} t ₅ ′) The correction value becomes 1.5, and the period corresponding to the second excretion action (that is, time t _{6 to} t ₆ ′) becomes the correction value 1.0.

  The data analysis device 60 calculates the measurement reliability of gas detection associated with each excretion based on the overall correction value and the partial correction value estimated in this way. In the present embodiment, the reliability is based on 3, and the reliability for each excretion is calculated as 3 × the product of all the total correction values × the product of all the corresponding partial correction values. Specifically, the reliability of the first excretion is 3 (reference) × 0.9 (temperature correction value) × 0.7 (subject adhesion noise correction value × 1.5 (number of times correction value) = 2.84. The reliability of the second excretion action is 3 (reference) × 0.9 (temperature correction value) × 0.7 (subject adhesion noise correction value × 1.0 (number of times correction value) = 1. 89.

  Then, the reliability calculated in this way is displayed on the display device 68 of the remote controller 8 as described with reference to FIG. Further, the calculated reliability is transmitted from the subject apparatus to the server 12 together with the detection data of the odorous gas sensor 26 and the detection data of the hydrogen gas sensor 24, and is recorded in the defecation gas database of the server 12. At this time, raw data that is not corrected by reliability described later is recorded in the stool gas database of the server 12 as the detection data of the odor gas sensor and the detection data of the hydrogen gas sensor. When the measurement data is browsed by the medical institution terminal 16 connected to the server 12, the measurement reliability is displayed together with the detection data of the odorous gas sensor 26 and the detection data of the hydrogen gas sensor 24. The doctor of the medical institution makes a diagnosis with reference to the measurement reliability displayed together with the odorous gas and hydrogen gas displayed on the medical institution terminal 16. Thereby, when a doctor etc. diagnoses a test subject's physical condition based on measurement data, a more exact diagnosis can be performed using data with high measurement reliability. In addition, the doctor may make a diagnosis without using or placing importance on data with low measurement reliability. Note that when the reliability of a part or all of the measurement data is 1 or less, the measurement accuracy is very low. Therefore, the measurement data is not transmitted to the server 12 because measurement is impossible.

  It is also possible to correct the detection data of the odorous gas sensor 26 and the hydrogen gas sensor 24 based on the measurement reliability calculated in this way. Specifically, when the measurement reliability is high, an actual detection value is used, but when the measurement reliability is low, the detection value is corrected to be a value close to a past detection value. As an example, when analyzing the physical condition based on the defecation gas detection data associated with the first excretion action in the subject-side device 10, a new detection is performed so as to approach the past measurement data recorded in the storage device of the remote controller 8. A case where the detected value is corrected will be described. As described above, the reliability associated with the first excretion was calculated as 2.84.

  The data analysis device 60 determines the correction amount of the measurement value based on the reliability calculated in this way. FIG. 17 is a diagram showing a correction table showing the relationship between the reliability recorded in the data analysis device and the correction rate of the measured value. As shown in the figure, for example, in this embodiment, when the reliability is 1 or less, the reliability of the detection data is too low, and thus the measurement value is not usable. That is, the physical condition is not analyzed based on the detection data during the period when the reliability is equal to or less than the predetermined value, and the analysis is performed based only on the detection data having the reliability higher than the predetermined value, and the analysis result is displayed on the display device 68. When the reliability is greater than 1 and less than or equal to 2, correction is performed so that the measured value approaches 20% toward the past history side. Further, when the reliability of the measurement value is greater than 2 and less than or equal to 3, correction is performed so that the measurement value approaches 15% toward the past history side. When the reliability is greater than 3 and less than or equal to 4, correction is performed so that the measured value approaches 10% toward the past history side. When the reliability is greater than 4 and less than or equal to 5, correction is performed to bring the measured value closer to the past history side by 5%. If the measured value is greater than 5, the measured value is used without correction.

  In the above example, the reliability associated with the first excretion action is 2.84. For this reason, as described with reference to FIG. 7A, correction is performed so that the plot point of the latest data approaches 15% of the past measurement value, and the data is displayed together with the past data.

  Such correction based on reliability may be performed on the server 12 side. In addition, when analyzing the physical condition on the server 12 side, for example, the detection value of the odorous gas and the detection value of the hydrogen gas of the excretion action whose reliability is equal to or higher than a predetermined value in one defecation period are totaled. The physical condition may be analyzed based on the totaled data. In addition, the detection data stored in the storage device of the remote controller 8 does not necessarily have to be corrected based on the measurement reliability, and the corrected detection data may be recorded.

  The correction table is not limited to the above-described subject attached odor gas noise correction table, temperature correction table, and humidity correction table. 18 to 29 are diagrams illustrating examples of the correction table.

  For example, if there is a strange odor noise (environmental noise) other than the defecation gas such as a fragrance in the toilet room, the odorous gas sensor 26 may detect this strange odor noise and the measurement accuracy may be reduced. Therefore, the data analysis device 60 corrects the reliability in order to evaluate the influence of environmental noise. In addition, about the noise amount of such environmental noise, it can evaluate based on the detection data by the odorous gas sensor 26 before a test subject's entrance is detected by the entrance detection sensor 34, for example. FIG. 18 is a diagram showing an environmental noise correction table. As shown in the figure, the environmental noise correction value is 1 when the environmental noise amount is smaller than a predetermined value, and is corrected to lower the reliability value as the environmental noise amount becomes larger than the predetermined value. Decrease the coefficient. When the amount of environmental noise is equal to or higher than the measurable upper limit, measurement is impossible. The environmental noise correction value affects the entire defecation period, and therefore may be a total correction.

  In addition, for example, when the reference value is set, such as when a spray-type fragrance is used, the detection data of the odorous gas sensor 26 greatly fluctuates, or the reference value set when the gas amount is estimated. When the inclination is large, the accuracy of the estimated gas amount is lowered. Therefore, the data analysis device 60 refers to the reference value stability correction table, and corrects the reliability in order to evaluate the influence of such a reference value stability failure state (referred to as a reference value stability failure). The reference value stability can be evaluated based on, for example, the inclination of the reference value with respect to the time axis during the non-defecation period and the magnitude of fluctuation in the detection value of the odorous gas sensor 26 when setting the reference value. FIG. 19 is a diagram illustrating a reference value stability correction table. As shown in the figure, the reference value stability noise correction value is 1 when the reference value stability failure is small, and decreases as the reference value stability failure increases. When the reference value stability failure is equal to or greater than a predetermined value, measurement is impossible. In addition, since estimation of the gas amount sets a reference value for each excretion action, it is a correction value only for a period corresponding to each excretion action, that is, a partial correction.

  For example, when the toilet seat is washed with a sterilization sheet, the odorous gas sensor 26 detects a component such as alcohol contained in the sterilization sheet. As for the influence of components such as alcohol contained in the sterilization sheet, a large value is detected in the odor gas sensor 26 immediately after the use of the sterilization sheet. However, since alcohol is highly volatile, it is odorous in a short period of time. The value detected by the gas sensor 26 is lowered. Therefore, the data analysis device 60 refers to the sanitized toilet seat cleaning correction table and corrects the reliability according to the influence of toilet seat sanitization. The use of the sterilization sheet is, for example, detected by the odorous gas sensor 26 after detecting that the subject has entered the room by the room detection sensor 34 and before detecting that the subject has been seated by the seating detection sensor 36. It can be detected by detecting that the data fluctuates more than a predetermined value. FIG. 20 is a diagram showing a sanitized toilet seat cleaning correction table. When it is detected that the sterilization sheet has been used in this way, the measurement is impossible (correction value 0) for a predetermined period from the detection of the sterilization sheet, and the correction value for the subsequent period is a value less than 1. Ascends to 1 over time. In addition, since the influence of a disinfection sheet changes with time as above-mentioned, it is set as partial correction | amendment.

  Further, since the amount of odorous gas contained in the defecation gas is very small, the more odorous gas discharged within the defecation period, the more accurate physical condition analysis can be performed. Therefore, the data analysis device 60 refers to the defecation gas total amount correction value table and corrects the reliability based on the total amount of odorous gas. The total amount of defecation gas can be evaluated by the total amount of gas estimated based on the detection data of the odorous gas sensor within the defecation period. FIG. 21 is a diagram showing a defecation gas total amount correction value table. As shown in the figure, the defecation total amount correction value is determined to be unmeasurable (correction value 0) if any problem occurs such as injecting aroma spray during measurement when the defecation gas total amount is a predetermined value or more, When the total amount of the defecation gas is less than or equal to a predetermined value, the measurement is impossible (correction value 0) because there is too little defecation gas and accurate measurement cannot be performed. Then, within a range where it is not determined that measurement is impossible (correction value 0), if the defecation gas total amount is large, the correction value is set to 1, and the correction value decreases as the defecation gas total amount decreases. Note that the total defecation gas amount correction is a total correction because a correction value is set based on the total defecation gas amount for the entire defecation period.

  Moreover, since a large amount of defecation gas is released into the bowl at the farting time than at the time of defecation, the defecation gas by the farting is suitable for physical condition analysis. For this reason, when the fart by the subject is detected, the data analysis device 60 refers to the fart correction value table and corrects the reliability in the fart period based on the amount of defecation gas included in the fart. To do. As for fart action, when the seat detection is detected by the seat detection sensor 36, it is detected that the difference between the detected value of the odorous gas sensor 26 and the reference value has rapidly increased at a change rate of a predetermined value or more. In addition, it can be determined that a fart act has been performed. Further, the period from when the above-mentioned difference suddenly increases until the detection value of the gas sensor 26 returns to the reference value may be a fart period. In order to detect that a fart action has been performed more accurately, the detection data of the odorous gas sensor 26 rises rapidly at a rate of change of a predetermined value or more, and the stool is placed in the bowl by a sealed water amount sensor or the like. What is necessary is just to detect that it is not discharged | emitted. FIG. 22 is a diagram illustrating a fart correction value table. As shown in the figure, in the fart correction value table, when the fart gas amount (the amount of stool gas detected by the odorous gas sensor) is small, the correction value is 1, and the fart gas amount increases as the fart gas amount increases. The correction value may be set to increase.

  In addition, when there is a large amount of stool in each excretion act, the amount of defecation gas increases and a more accurate physical condition analysis can be performed. The amount is reduced and the accuracy of physical condition analysis is reduced. Therefore, the data analysis device 60 refers to the stool volume correction value table and corrects the reliability based on the stool volume during each excretion action. The stool volume can be evaluated by, for example, a sealed water volume sensor (stool volume measuring device) that detects a change in the sealed water volume of the defecation / urine detection sensor 38. FIG. 23 is a diagram illustrating a stool amount correction value table. As shown in the figure, when the stool volume is equal to or less than a predetermined value, the amount of stool gas is very small as well as the stool volume, and the measurement is impossible because accurate analysis cannot be performed. When the stool volume exceeds a predetermined value, the correction value gradually increases from a value less than 1 to a value greater than 1 as the stool volume increases. Since the stool volume is determined for each excretion action, the stool volume correction value is a partial correction.

  In addition, for example, when the stool is in a diarrhea state, since the release time is short, the sensor cannot sufficiently detect defecation gas. Moreover, when the stool after defecation floats in the sealing water, the defecation gas is released from the stool that floats in the sealing water, and the detection accuracy of the defecation gas decreases. Therefore, the data analysis device 60 refers to the flight type correction table and corrects the reliability according to the flight type of each excretion action. Note that the stool type can be detected based on the detection results using a CCD of a defecation / urine detection sensor 38 as a stool state detection device, a microwave sensor, or the like. In addition, feces floating can be detected by installing a CCD, a microwave sensor or the like in the bowl as a floating detector. FIG. 24 is a diagram illustrating a flight type correction value table. As shown in the figure, in the case of diarrheal stool, measurement is not possible (correction value 0). Is detected, the correction value is set to 1. In addition, since a flight type is determined for every excretion action, the flight type correction value is a partial correction.

  Also, healthy people usually defecate about once a day. On the other hand, if the gastrointestinal condition worsens due to food poisoning or the like, defecation may occur several times a day. In such a case, even if defecation is performed, the amount of defecation gas released during defecation is reduced. In addition, when the frequency of defecation decreases due to constipation or the like, the amount of defecation gas increases because the generation time of the odor component becomes longer or the amount of stool increases. If the defecation interval becomes too large, the analysis accuracy of the physical condition is lowered. Therefore, the data analysis device 60 refers to the defecation interval correction table and corrects the reliability based on the defecation interval. The defecation interval can be determined based on the date and time of the previous defecation stored by the data analysis device 60 and the defecation history information input in the measurement start preparation step S2. FIG. 25 is a diagram illustrating a defecation interval correction value table. As shown in the figure, when the defecation interval is extremely short, the correction value is very lower than 1, and when the defecation interval is about one day, the correction value is 1, and the defecation interval is 2. When it is about days, the correction value is set to a value lower than 1, and when the defecation interval is 4 days or more, the correction value is set to a value much lower than 1. The defecation interval correction value is the overall correction.

  In the determination of the physical condition based on the defecation gas, for example, when the gastrointestinal condition is deteriorated due to the cause of eating and drinking over the previous day, the physical condition is determined to be worse than the original physical condition. For this reason, the daily life results in variations in the physical condition analysis results. For this reason, for example, at the time when the analysis of physical condition by the biological information measurement system of the present embodiment is started, if a day with a bad physical condition happens to overlap due to overdrinking and eating, etc., an analysis result with a poor physical condition even if the history is displayed Only the message is displayed, and there is a possibility that accurate determination of the disease cannot be performed in a medical institution or the like. Therefore, the data analysis device 60 corrects the reliability in accordance with the number of past measurement data stored in the subject-side device with reference to the data accumulation amount correction table. FIG. 26 is a diagram illustrating a data accumulation amount correction table. As shown in the figure, when the number of accumulated data is less than 5, diagnosis is impossible (correction value 0), and when the number of accumulated data is 5 times or more and less than 10, the correction value is 1 If the number of stored data is 10 times or more and less than 30 times, the correction value is set to a low value of less than 1, and if the number of stored data is 30 times or more, the correction value is corrected. The value is 1. The subject-side device in the present embodiment is not a device for diagnosing cancer, but is a device intended to make the subject recognize that the risk of cancer has increased with changes in physical condition and to improve life. For this reason, since the accuracy of one measurement is not high, and the change history is the value of this apparatus, it is desirable to take such measures to prevent unnecessary psychological burden.

  When the filter 72 installed in the duct 18a is clogged, the amount of air sucked into the duct 18a is reduced. On the other hand, if the air volume of the gas sent to the odorous gas sensor 26 or the hydrogen gas sensor 24 changes, the detection data of the odorous gas sensor 26 or the hydrogen gas sensor 24 changes according to the air volume. Further, if the wind speed of the gas sent to the odorous gas sensor 26 or the hydrogen gas sensor 24 is high, the time for which the gas contacts the sensor is short, and the detection part of the sensor does not react sufficiently. For this reason, it is desirable that the amount of air sent to the odorous gas sensor 26 and the hydrogen gas sensor 24 is constant. For this reason, the data analysis device 60 refers to the air volume correction value table and corrects the reliability according to the air volume (wind speed) of the gas sent to the odorous gas sensor 26 or the hydrogen gas sensor 24. In addition, the gas | air volume can be estimated based on the electric current and voltage of the suction fan 18c provided in the deodorizing apparatus, for example. FIG. 27 is a diagram showing an air volume correction value table. As shown in the figure, in the air volume correction table, when the air volume is less than the measurable lower limit value and greater than or equal to the measurable upper limit value, measurement is impossible (correction value 0), and the correction value is 1 within the optimum air volume range. It is set to a value close to 1 within a measurable range other than that. In the present embodiment, since the influence of the decrease in the air volume due to clogging has a greater influence on the sensor detection sensitivity than when the air volume is large, the correction value in the range higher than the optimum range within the measurable range is The correction value in the range lower than the optimum range is set low. Since the air volume during the measurement does not change greatly, the overall correction is made.

The defecation gas contains CO ₂ gas as a health gas, like hydrogen gas. For this reason, when a large amount of CO ₂ is detected by the CO ₂ gas sensor, the defecation gas is reliably detected by the sensor device. Therefore, the data analysis device 60 refers to the CO ₂ correction table and corrects the reliability based on the CO ₂ detection data detected by the carbon dioxide sensor 28. FIG. 28 is a diagram showing a CO ₂ correction table. As shown in the figure, in the CO ₂ correction table, when the detected amount of CO ₂ is less than a predetermined value, the correction value is set to 1, and when the detected amount of CO ₂ is greater than or equal to the predetermined value, it increases. The correction value is increased. Since the CO ₂ correction value can be calculated for each excretion action, it is a partial correction. Thus, in the present embodiment, since the detected hydrogen gas is corrected based on the amount of CO ₂ gas, the health system gas is evaluated using hydrogen gas and CO ₂ gas.
Further, when the physical condition analysis is performed using the detection data of the CO ₂ gas sensor as the detection data of the health gas, the correction value increases as the detection value detected by the hydrogen gas sensor 24 increases instead of the CO ₂ correction table. It is sufficient to use an H ₂ correction table that increases the value.

  The defecation gas contains methane as a health gas, like hydrogen gas. For this reason, for example, a methane gas sensor that reacts strongly with methane gas is installed in the duct 18a of the deodorization device, and when a large amount of methane is detected by this methane gas sensor, a large amount of defecation gas is released. Therefore, the data analysis device 60 refers to the methane gas correction table and corrects the reliability based on the detected amount of methane gas detected by the methane gas sensor. FIG. 29 shows a methane gas correction table. As shown in the figure, in the methane gas correction table, when the detected amount of methane gas is less than a predetermined value, the correction value is 1, and when the detected amount of methane gas is greater than or equal to the predetermined value, the correction value increases as it increases. Has increased. Since the methane gas correction value can be calculated for each excretion action, it is a partial correction.

In this embodiment, when the detected values of CO ₂ and methane are high, the reliability is corrected to be high. However, the present invention is not limited to this, and when the detected values of CO ₂ and methane are high, the hydrogen gas It is also possible to perform correction so as to increase the detection value.

  When there is cancer in the intestine, not only odorous gas but also hydrogen sulfide gas is included in the defecation gas. For this reason, for example, a hydrogen sulfide gas sensor that reacts strongly with hydrogen sulfide gas is installed in the duct 18a of the deodorizer, and the reliability is determined based on the detection data of the hydrogen sulfide gas detected by the hydrogen sulfide gas sensor. to correct. FIG. 30 is a diagram showing a hydrogen sulfide gas correction table. As shown in the figure, in the hydrogen sulfide gas correction table, the correction value is set to 1 when the detected amount of sulfide gas is less than a predetermined value, and increases when the detected amount of hydrogen sulfide gas is equal to or greater than the predetermined value. The correction value is increased as time goes on. Since the hydrogen sulfide gas correction value can be calculated for each excretion action, it is a partial correction. The reliability is calculated using a part or all of the correction table described above.

Next, with reference to FIG. 31 to FIG. 36, measurement of the odorous gas concentration by the gas sensor in the embodiment of the present invention will be described.
FIG. 31 is a schematic diagram for explaining the operation principle of the semiconductor gas sensor used in the embodiment of the present invention.
In the embodiment of the present invention, a semiconductor gas sensor is used for both the hydrogen gas sensor 24 and the odorous gas sensor 26, tin dioxide is used for the detection part of the hydrogen gas sensor 24, and tungsten trioxide is used for the detection part of the odorous gas sensor 26. It is used. The upper part of FIG. 31 shows the operation principle of a general semiconductor gas sensor. First, the oxygen in the air is in a state of being negatively adsorbed on the surface of the detection portion of the semiconductor gas sensor, and this detection portion is generally heated to a temperature of 370 ° C. or higher when in use.

  When hydrogen gas comes into contact with the detection unit in such a state, an oxidation-reduction reaction occurs between oxygen and hydrogen on the surface of the detection unit, and oxygen that has been negatively adsorbed is deprived by hydrogen (upper left column in FIG. 31). . Thereby, the free electrons of the detection unit increase and the electrical resistance of the detection unit decreases. The concentration of hydrogen gas in contact with the detection unit can be detected by the change in the resistance value of the detection unit. Similarly, as shown in the upper right column of FIG. 31, even when an odorous gas containing a sulfur component such as hydrogen sulfide or methyl mercaptan gas (hereinafter referred to as “S-based gas”) comes into contact with the detection unit, The oxidation-reduction reaction occurs on the surface and the electrical resistance of the detection unit changes, whereby the concentration of the S-based gas can be detected.

  Here, the tin dioxide used in the detection unit of the hydrogen gas sensor 24 generates a strong oxidation-reduction reaction when the hydrogen gas comes into contact, but substantially does not come into contact with an S-based gas such as hydrogen sulfide or methyl mercaptan gas. Thus, no oxidation-reduction reaction occurs. Therefore, the hydrogen gas sensor 24 using tin dioxide is a gas sensor that reacts substantially only with hydrogen gas. On the other hand, tungsten trioxide used in the detection part of the odorous gas sensor 26 generates a strong redox reaction when contacted with an S-based gas, but does not cause a strong reaction with hydrogen gas. Therefore, it is possible to detect the S-based gas with a gas sensor using tungsten trioxide. That is, with the tungsten trioxide constituting the first detection unit provided in the odorous gas sensor 26 and the tin dioxide constituting the second detection unit provided in the hydrogen gas sensor 24, the S-based gas and the hydrogen gas Are different from each other (relative sensitivity to hydrogen gas and S-based gas). The first detection unit of the odorous gas sensor 26 reacts to S-system gas and hydrogen gas, whereas the second detection unit of the hydrogen gas sensor 24 reacts to hydrogen gas, but substantially does not react to S-system gas. The sensitivity to S-based gas is lower than that of the first detection unit.

  However, as described above, the concentration of the S-based gas such as hydrogen sulfide or methyl mercaptan gas contained in the defecation gas is 1/1000 to 1/10000 of the hydrogen concentration. For this reason, even if the reaction of the odorous gas sensor 26 to the hydrogen gas is slight, it is difficult to detect the concentration of the S-based gas with sufficient accuracy when the fecal gas is the measurement object. The present inventors who faced such a difficulty set the temperature of the detection part of the odorous gas sensor 26 lower than the temperature of the detection part of a normal semiconductor gas sensor (for example, 200 ° C.), thereby making the odorous gas sensor 26. Was found to be less sensitive to hydrogen gas. The lower part of FIG. 31 illustrates the principle of operation of the semiconductor gas sensor when the temperature is set to a low temperature.

  As shown in the lower left column of FIG. 31, when the temperature of the detection unit is set to a low temperature, the oxidation-reduction reaction hardly occurs even when hydrogen gas comes into contact with the surface of the detection unit. Not much change. For this reason, the sensitivity with respect to the hydrogen gas of the odorous gas sensor 26 further decreases. On the other hand, when an S-based gas such as hydrogen sulfide or methyl mercaptan gas comes into contact with the detection unit set to a low temperature, although the oxidation-reduction reaction does not occur much, as shown in the lower right column of FIG. As the sulfur component is adsorbed on the detection unit, free electrons in the detection unit increase. For this reason, even when the odorous gas sensor 26 is set at a low temperature of the detection unit, the detection sensitivity for the S-based gas hardly changes. Therefore, by setting the temperature of the detection unit low, the oxidation-reduction reaction with respect to the hydrogen gas is lowered and the sensitivity with respect to the S-based gas is relatively increased, so that the influence of the hydrogen gas on the odorous gas sensor 26 is further reduced. Can be made.

FIG. 32 is a graph showing the relationship between the set temperature of the detection unit and the detection signal for each gas.
In order to determine a more appropriate detection unit temperature of the odorous gas sensor 26 using the above principle, the present inventor conducted the following experiment. First, a gas in which 300 ppm of hydrogen gas was mixed in the air was brought into contact with the odorous gas sensor 26 whose detection unit was set at various temperatures, and output signals (response values) from the sensors at that time were recorded. Similarly, an output signal (response value) for each temperature was recorded for each gas in which 150 ppb S-based gas was mixed in air. In addition, hydrogen gas 300ppm is the density | concentration of the hydrogen gas assumed to be contained in defecation gas in a healthy subject, and odorous gas 150ppb is assumed to be contained in defecation gas in a colon cancer patient. This is the concentration of the system gas. FIG. 32 shows a plot of the ratio of the response value to the S-based gas thus obtained and the response value to the hydrogen gas calculated for each temperature.

  As shown in FIG. 32, when the temperature of the detection unit is about 300 ° C., the ratio of response values (response value of S-based gas / response value of hydrogen) is about 1. This indicates that when the temperature of the detection unit is set to about 300 ° C., the response value of the odorous gas sensor 26 with respect to 300 ppm of hydrogen gas is almost equal to the response value with respect to the S-based gas 150 ppb. Furthermore, as shown in FIG. 32, the value of this ratio (response value of S-based gas / response value of hydrogen) increases as the temperature of the detection unit decreases. As a result, it has become clear that it is more advantageous to lower the temperature of the detection part of the odorous gas sensor 26 in order to obtain a characteristic that does not react easily with hydrogen gas while strongly reacting with the S-based gas. For this reason, the temperature of the detection part of the odorous gas sensor 26 is set to a redox reduction temperature at which the oxidation-reduction reaction with respect to hydrogen gas is reduced, and the temperature of the detection part of the hydrogen gas sensor 24 is sufficient for the oxidation-reduction reaction with respect to hydrogen gas. The generated redox temperature is set.

  However, if the temperature of the detection unit is set too low, the output signal from the odorous gas sensor 26 is likely to fluctuate due to changes in the temperature and humidity of the defecation gas that contacts the detection unit, and the response of the signal output is also improved. Therefore, it becomes difficult to obtain stable detection data. For this reason, in this embodiment, the oxidation reduction reduction temperature which is the temperature of the detection part of the odorous gas sensor 26 is set to about 350 degreeC. Preferably, the temperature of the detection part of the odorous gas sensor 26 is set to about 280 to about 360 ° C. On the other hand, in the present embodiment, the oxidation-reduction temperature that is the temperature of the detection unit of the hydrogen gas sensor 24 is set to about 370 ° C. that is generally used as the temperature of the detection unit of the semiconductor gas sensor. Preferably, the temperature of the detection part of the hydrogen gas sensor 24 is set to about 370 ° C. or higher. Thus, the temperature (oxidation reduction temperature) of the second detection unit is set to be higher than the temperature of the first detection unit (oxidation reduction temperature).

Next, the removal of the influence of hydrogen gas from the output signal of the odorous gas sensor 26 will be described with reference to FIG.
FIG. 33A shows an output signal waveform when a gas containing S gas and hydrogen gas is brought into contact with the odorous gas sensor 26, and FIG. 33B shows the S gas concentration in the mixed gas. It is a graph which shows the relationship of the peak value of an output signal.
In order to eliminate the influence of hydrogen gas on the odorous gas sensor 26, the present inventors conducted the following experiment. First, air mixed with S-based gas and hydrogen gas at a predetermined concentration was caused to flow through the measurement gas passage in which the odorous gas sensor 26 was disposed, and the output signal of the odorous gas sensor 26 was recorded. FIG. 33A shows an output signal waveform of the odorous gas sensor 26 recorded in this manner. The solid line in FIG. 33A is a time waveform of the output signal acquired when a gas obtained by mixing 100 ppm hydrogen gas and 300 ppb S-based gas with air is passed through the measurement gas passage. Also, the broken line is an output signal when 100 ppm hydrogen gas and 200 ppb S-based gas are flown, and the alternate long and short dash line is an output signal when air mixed with 100 ppm hydrogen gas and 100 ppb S-based gas is flowed. As shown in FIG. 33 (a), when air mixed with hydrogen and S-based gas is allowed to flow through the measurement gas passage, the output signal of the odorous gas sensor 26 rises relatively abruptly, and then reaches a peak value (circle mark). ) And then gradually decline.

  In FIG. 33B, the peak value of the output signal waveform thus obtained is measured for various ratios of the mixed gas, and the horizontal axis is the S-system gas concentration and the vertical axis is the peak value of the output signal waveform. It is a plot. The solid line in FIG. 33 (b) connects the peak value of the output signal acquired when 400 ppm hydrogen gas and a gas in which S-based gas is mixed with air at various concentrations are allowed to flow through the measurement gas passage. It is a line. Similarly, the broken line, the alternate long and short dash line, and the alternate long and two short dashes line in FIG. 33 (b) are used for measuring a gas in which 300 ppm, 200 ppm, 0 ppm (without hydrogen) hydrogen gas and various concentrations of S-based gas are mixed. It is the peak value of the output signal acquired when flowing through the gas passage. By using the graph of FIG. 33B as a calibration curve, the concentration of the S-based gas can be measured with sufficient accuracy even for a gas in which hydrogen gas and S-based gas are mixed.

  That is, like the gas detection device 20 shown in FIG. 3, the hydrogen gas sensor 24 and the odorous gas sensor 26 are arranged in the intake passage 18b which is a measurement gas passage, and each output signal when the defecation gas flows is provided. Get the peak value of. Next, the hydrogen gas concentration in the defecation gas is determined based on the peak value of the hydrogen gas sensor 24. In the present embodiment, since the hydrogen gas sensor 24 is a gas sensor that does not substantially react with the S-based gas, the hydrogen gas concentration can be obtained with sufficient accuracy from the peak value of the output signal of the hydrogen gas sensor 24. Based on the hydrogen gas concentration obtained in this way, the S-system gas concentration can be obtained using the calibration curve of FIG. 33B which is a conversion table. In actual measurement of defecation gas, the output signal of each gas sensor rises due to environmental noise such as residual gas, so the peak value of the output signal is calculated from the amount of change from the reference value due to these environmental noises. To do.

  For example, when the hydrogen gas concentration determined by the hydrogen gas sensor 24 is 300 ppm, the broken line in FIG. 33B is used as a calibration curve, and this broken line is a peak value measured by the odorous gas sensor 26 (for example, The concentration at point (p point in FIG. 33 (b)) (point m in FIG. 33 (b)) can be estimated as the concentration of the S-based gas contained in the mixed gas. Thereby, the density | concentration of S type gas in mixed gas can be estimated with sufficient precision using the odorous gas sensor 26 which also reacts with hydrogen gas. In the biological information measuring system 1 of the present embodiment, the gas calculation circuit 60a (FIG. 2) built in the data analysis apparatus 60 includes a calibration curve obtained in advance, and this calibration curve and the odorous gas sensor Based on the first and second detection data detected by the hydrogen gas sensor 24 and the hydrogen gas sensor 24, the concentration of the S-based gas contained in the defecation gas is obtained.

  Note that the calibration curve in FIG. 33B relates to hydrogen gas concentrations of 400 ppm, 300 ppm, 200 ppm, and 0 ppm, but for other hydrogen gas concentrations, the obtained calibration curve is interpolated or extrapolated. Thus, a calibration curve can be generated with sufficient accuracy. Since the concentration of hydrogen contained in the defecation gas is limited to a predetermined range, it is possible to prepare the calibration curve so as to cover the range of gas concentration assumed as the defecation gas, so that the S system is sufficiently accurate. The gas concentration can be determined. In the present embodiment, the conversion table is a calibration curve as shown in FIG. 33B, but the conversion table shows the S-system gas concentration for each detection data of the odorous gas sensor 26 and the hydrogen gas sensor 24. The numerical formula shown may be sufficient, and the conversion type | formula which can calculate S type gas concentration may be sufficient.

  In FIG. 33, a calibration curve is created based on the peak value of the output signal waveform of the odorous gas sensor 26, and the concentration of the S-based gas is estimated based on the calibration curve. And as shown in FIG. 35, a calibration curve can be calculated | required by a different parameter | index.

  In the modification shown in FIG. 34, the area surrounded by the output signal waveform (the output signal waveform shown by the solid line in FIG. 34A) until the signal from the odorous gas sensor 26 reaches the peak value. Based on the area of the hatched portion, the calibration curve of FIG. 34B is created. That is, the calibration curve of FIG. 34B is created based on the relationship between the area surrounded by the output signal waveform and the S-system gas concentration in the mixed gas when the mixed gas flows through the measurement gas passage. The When the S-system gas concentration is calculated in this modification, the calibration in FIG. 34B is performed based on the area until the output signal waveform of the odorous gas sensor 26 obtained by the measurement of the defecation gas reaches the peak value. The line is read and the S-system gas concentration is calculated. In addition, although the calibration curve obtained as FIG. 34 (b) is different from the above-mentioned FIG. 33 (b) in the value of the vertical axis, the S-system gas concentration equivalent to FIG. 33 (b). Can be calculated.

  In the modification shown in FIG. 35, based on the rising slope of the output signal waveform of the odorous gas sensor 26 (the slope of the arrow with respect to the output signal waveform shown by the solid line in FIG. 35A), FIG. A calibration curve is created. That is, the calibration curve of FIG. 35B is created based on the relationship between the rising slope of the output signal waveform and the S-system gas concentration in the mixed gas when the mixed gas flows through the measurement gas passage. . When calculating the S-system gas concentration in this modification, the calibration curve of FIG. 35B is read based on the rising slope of the output signal waveform of the odorous gas sensor 26 obtained by measuring the defecation gas, and the S The system gas concentration is calculated. The calibration curve obtained as FIG. 35 (b) has an ordinate value different from that of FIG. 33 (b) described above, but the S system having the same value as FIG. 33 (b). The gas concentration can be calculated.

The calculation of the S-system gas concentration using the odorous gas sensor 26 and the hydrogen gas sensor 24 has been described with reference to FIGS. 33 to 35. However, a gas sensor that also reacts to the S-system gas is used as the hydrogen gas sensor 24. You can also. That is, the ratio of the sensitivity to the S gas and the sensitivity to the hydrogen gas (relative sensitivity to the hydrogen gas and the S gas) may be different between the odorous gas sensor and the hydrogen gas sensor. In this case, the concentration of each gas can be calculated by creating a binary simultaneous equation using the sensitivity of each sensor to each gas and the output value of each sensor and solving this.
33 to 35, the measurement of the “concentration” of the S-based gas contained in the defecation gas has been described, but since there is a certain pattern in the release of the defecation gas by the subject, the hydrogen gas sensor 24 and the odor property Based on each output signal waveform of the gas sensor 26, the discharge amount of each gas can be estimated. For example, it is known that the amount of gas is roughly proportional to the product of the rising slope of the output signal waveform of the gas sensor and the time until the output signal waveform reaches the peak value. The content of each gas contained in the defecation gas can be estimated.

Next, with reference to FIG. 36 and FIG. 37, the compatibility maintenance for the conversion table will be described.
As described above, in the biological information measurement system 1 according to the embodiment of the present invention, noise due to hydrogen gas is suppressed and a highly accurate S-based gas concentration is estimated based on a calibration curve that is a conversion table. However, the calibration curve is created based on the measurement result of the mixed gas under the conditions of predetermined temperature and humidity. Therefore, when the biological information measurement system 1 measures the actual defecation gas, the gas is detected under an environment different from the conditions for creating the calibration curve. In such a case, the compatibility between the output signals of the odorous gas sensor 26 and the hydrogen gas sensor 24 and the calibration curve is lowered, and the accuracy of the estimated S-system gas concentration is lowered. In particular, since the S-system gas concentration is estimated based on the output signals from both the odorous gas sensor 26 and the hydrogen gas sensor 24, it is easily affected by changes in the measurement environment and can maintain compatibility with the calibration curve. is important. In the present embodiment, the compatibility holding circuit 60b (FIG. 2) built in the data analysis device 60 is used to calculate the first and second detection data from the odorous gas sensor 26 and the hydrogen gas sensor 24 and the calibration curve. The calculation by the gas calculation circuit 60a is corrected so that the compatibility between them is maintained.

FIG. 36 is a diagram for explaining correction by the compatibility holding circuit 60b.
FIG. 36A is a diagram schematically illustrating an example of temperature dependence on output signals of the odorous gas sensor 26 and the hydrogen gas sensor 24. First, the calibration curve shown in FIG. 33A is created under the condition of the temperature Ta in FIG. Therefore, when the temperature at the time of actual defecation gas measurement deviates from Ta, the output signals of the odorous gas sensor 26 and the hydrogen gas sensor 24 change. In the example shown in FIG. 36A, under the condition of the temperature Ta ′, the output signal of the odorous gas sensor 26 is 1.05 times that at the temperature Ta, and the output signal of the hydrogen gas sensor 24 is 0.95 times. It has become.

  Next, as shown in FIG. 36B, when obtaining the hydrogen concentration in the defecation gas based on the output signal of the hydrogen gas sensor 24, the output signal of the hydrogen gas sensor 24 is dependent on the temperature shown in FIG. Correction based on the nature (in this example, the output signal is divided by 0.95). In this way, the hydrogen gas concentration in the defecation gas is calculated based on the corrected output signal. Further, as shown in FIG. 36 (c), a calibration curve is selected based on the calculated hydrogen gas concentration (in the example of FIG. 36 (c), a calibration curve having a hydrogen gas concentration of 300 ppm indicated by a broken line is selected). Have been). On the other hand, the output signal of the odorous gas sensor 26 is also corrected based on the temperature dependence shown in FIG. 36A (in this example, the output signal is divided by 1.05). Based on the output signal (peak value) of the odorous gas sensor 26 corrected in this way and the previously selected calibration curve, the concentration of the S-system gas in the defecation gas is estimated (FIG. 36C). In this example, it is estimated that the S-based gas concentration is 150 ppb). In this way, the suitability holding circuit 60b can satisfactorily keep the suitability of the detected data with respect to the calibration curve by correcting each output signal based on the temperature dependence.

  In the above-described example, only the temperature dependence of the odorous gas sensor 26 and the hydrogen gas sensor 24 is corrected, but the output signal of these sensors also depends on the humidity of the measurement environment. Therefore, preferably, the “variation ratio” described in FIG. 36A is obtained with respect to temperature and humidity (the “variation ratio” is obtained as a three-dimensional graph for each combination of temperature and humidity). Using this, the output signal of each sensor is corrected. The operation of the compatibility holding circuit 60b in this case is the same as the above except that the “variation ratio” in FIG. 36A is determined based on temperature and humidity.

Next, with reference to FIG. 37, the suitability maintenance with respect to the secular change of each gas sensor will be described.
The output signals of the odorous gas sensor 26 and the hydrogen gas sensor 24 also fluctuate due to aging of the sensors. FIG. 37 is a diagram for explaining the compatibility maintenance with respect to these secular changes. In the odorous gas sensor 26 and the hydrogen gas sensor 24 employed in the present embodiment, the output signal output for the gas having the same concentration gradually increases with the use of many years. In order to cancel the fluctuation of the output signal, in this embodiment, the output signals of the odorous gas sensor 26 and the hydrogen gas sensor 24 are corrected by the “correction ratio” shown in FIG. As shown in FIG. 37A, the “correction ratio” is set to take a value of less than 1 after a predetermined period has elapsed, and the value decreases with the passage of time. Based on FIG. 37A, the compatibility holding circuit 60 b determines “correction ratios” of the odorous gas sensor 26 and the hydrogen gas sensor 24 based on the years of use of the odorous gas sensor 26 and the odorous gas sensor 26. Further, correction is performed by multiplying the output signal of the hydrogen gas sensor 24, respectively.

Furthermore, the secular change of each gas sensor differs depending on the environment in which the sensor is installed. In a gas sensor installed in an environment with a lot of odorous gas components, the secular change is accelerated, and the output signal fluctuates early. FIGS. 37B and 37C show the correction ratio based on the environment in which the gas sensor is installed.
The compatibility holding circuit 60b acquires the concentration of the odorous gas in the air atmosphere at a predetermined time during standby when the measurement of the defecation gas is not performed, and averages the acquired odorous gas concentration over a long period of time. A typical value. The average odorous gas concentration value at the time of standby is applied to FIG. 37B, and the correction ratio value is determined. This correction assumes that the biological information measurement system 1 is installed in an environment where there is a particularly high odorous gas or in a toilet room where a strong fragrance is always used. As shown in FIG. 37 (b), when the odorous gas concentration during standby is greater than or equal to a predetermined value, the correction ratio is set to a value less than 1, and the correction value decreases linearly as the odorous gas concentration increases. Become.

  Furthermore, FIG. 37 (c) is a correction assuming that the biological information measurement system 1 is installed in an environment where the concentration of hydrogen sulfide in the atmosphere is high, such as a hot spring area. As shown in FIG. 37 (c), when the hydrogen sulfide concentration in the atmosphere is equal to or higher than a predetermined value, the correction ratio is set to a value less than 1, and the correction value is gradually reduced as the hydrogen sulfide concentration is higher. Yes. In order to perform such correction, the biological information measurement system 1 is preferably provided with a sensor for measuring the concentration of hydrogen sulfide in the atmosphere. Alternatively, the biological information measurement system 1 is provided with a switch for inputting the hydrogen sulfide concentration in the atmosphere, and the present invention is configured so that the user can set the switch according to the assumed hydrogen sulfide concentration. You can also.

  The compatibility holding circuit 60b corrects the output signal by multiplying all the correction ratios determined based on FIGS. 37A to 37C by the output signals of the odorous gas sensor 26 and the hydrogen gas sensor 24. Thereby, the estimation result of the odorous gas concentration by the gas arithmetic circuit 60a is corrected based on the usage period of the odorous gas sensor 26 and the hydrogen gas sensor 24 (detection unit thereof).

As described above, the correction by the compatibility holding circuit 60b described based on FIG. 37 sets the secular change assumed for the odor gas sensor 26 and the hydrogen gas sensor 24 in advance, and corrects the characteristics of the gas sensor based on the period of use. To do. On the other hand, in the modification described below, the secular change of each gas sensor is directly measured, and correction is performed by the compatibility holding circuit 60b.
The biological information measuring system 1 according to the present embodiment includes a toilet sterilizer 48 (FIG. 2). The toilet sterilizer 48 electrolyzes chloride ions contained in tap water and hypochlorous acid water. This is a hypochlorous acid water cleaning device that sterilizes the bowl surface by spraying it onto the bowl 2a surface. In order to sterilize the bowl surface with this hypochlorous acid water cleaning device, hydrogen gas is generated by electrolysis when hypochlorous acid water is generated. By measuring the hydrogen gas with the odor gas sensor 26 and the hydrogen gas sensor 24, the gas sensor can be calibrated. That is, the amount of change in sensor characteristics is specified based on the difference between the output signal of the odorous gas sensor 26 that has detected the generated hydrogen gas and the output signal of the odorous gas sensor 26 in the initial state. The compatibility holding circuit 60b calibrates the sensor based on the difference between the output signals of the odorous gas sensor 26, and ensures the compatibility of the output signal of the odorous gas sensor 26 with respect to the conversion table (FIG. 33 (a)). Similarly, the compatibility holding circuit 60b calibrates the hydrogen gas sensor 24 to ensure compatibility with the conversion table of the output signal of the hydrogen gas sensor 24. In this manner, by directly calibrating each sensor with the hydrogen gas for calibration, it is possible to accurately measure the change in the characteristics of each detection unit. Moreover, since the hydrogen gas which the toilet bowl sanitizer 48 produces | generates is utilized for calibration, each sensor can be calibrated, without providing a special apparatus.

Since the amount of hydrogen gas generated when generating a predetermined amount of hypochlorous acid water is substantially constant, the odorous gas sensor 26 measures the hydrogen gas discharged together with the hypochlorous acid water. Calibration can be performed. In this embodiment, the sterilization by the toilet sterilizer 48 is performed every time after the use of the flush toilet 2 by the subject. Preferably, the calibration of the odorous gas sensor 26 is performed by sterilizing the bowl surface. Separately, it is executed when the flush toilet 2 is not used at midnight or the like. That is, immediately after the use of the flush toilet 2, it is highly possible that a large amount of odorous gas remains in the toilet room, which is not suitable for calibration of the odorous gas sensor 26. On the other hand, when the flush toilet 2 is not used for a long time, the remaining odorous gas is small, so that calibration can be performed with little noise, which is preferable. Also, by performing calibration separately from normal bowl surface sterilization, it is possible to produce hypochlorous acid water with a higher concentration than that used for normal sterilization, producing a large amount of hydrogen. can do. In addition to normal sterilization, by calibrating in the late night when the subject is absent, even if high-concentration hypochlorous acid water is generated, it avoids the risk of touching the subject and causing rough skin etc. be able to.
Furthermore, the electrolysis can be performed twice so that hypochlorous acid water having different concentrations is generated, and the calibration can be performed twice by using hydrogen gas having different concentrations generated at each electrolysis. . Thus, by calibrating with two types of gases having different concentrations, the gas sensor can be calibrated with higher accuracy. In addition, in order to generate higher concentration of hydrogen, an aqueous solution in which sodium chloride or the like is mixed with tap water is prepared, and hydrogen gas generated when electrolyzing it is used for calibration of the gas sensor. it can.

  Therefore, in the present embodiment, the toilet bowl sterilization device 48 functions as a calibration gas generation device for generating a calibration gas, and when the defecation gas is not measured, the detection of the gas sensor ( (2) function as a deterioration measuring device that measures the degree of deterioration by the generated gas. Further, as a modification, a chamber (not shown) holding a calibration gas is provided, and the calibration gas generator is configured to periodically release a predetermined amount of calibration gas from the chamber. The gas sensor can also be calibrated with this gas. Alternatively, a liquid that generates a calibration gas when it is put into the stored water of the flush toilet 2 is held in a tank (not shown), and a calibration gas is periodically generated using this liquid. A gas sensor calibration can also be performed. In any case, the calibration of the gas sensor is preferably performed in a time zone such as midnight when the defecation gas is not measured and the flush toilet 2 is not used for a long time.

  In the biological information measuring system according to the first embodiment described with reference to FIG. 1, the measuring device 6 is incorporated in the toilet seat 4 placed on the flush toilet 2 installed in the toilet room R. However, in the biological information measuring system of the present invention, the measuring device does not necessarily have to be incorporated in the toilet seat.

  Fig.38 (a) is a figure which shows the state which attached the test subject side apparatus in the biological information measurement system by 2nd Embodiment to the flush toilet installed in the toilet room, The same figure (b) is the same figure (b). It is a perspective view which shows the measuring apparatus of the test subject side apparatus shown to a). In addition, in 2nd Embodiment, compared with 1st Embodiment, only the structure of a test subject side apparatus is different. As shown in FIG. 38 (a), the biological information measurement system 101 of this embodiment has the same configuration as that of the first embodiment, but only the configuration of the measurement device 106 of the subject-side device 110 is different. The measuring device 106 of this embodiment is configured separately from the toilet seat 104.

  As shown in FIG. 38 (b), the measuring apparatus 106 includes an apparatus main body 180, a duct 118a that is attached to the upper surface of the apparatus main body 180 so as to extend in the lateral direction, and has a distal end bent downward. And a power cord 182 connected to the main body 180. As shown in FIG. 38 (a), the measuring device 106 is fixed in a state where the end of the duct 118a is located in the bowl by hooking the end of the duct 118a on the side wall of the bowl of the flush toilet 2. .

  Similar to the first embodiment, the apparatus main body 180 includes a hydrogen gas sensor, an odorous gas sensor, a carbon dioxide sensor, a humidity sensor, a temperature sensor, an entrance detection sensor, a seating detection sensor, and a defecation / urination detection sensor. And a suction device, a sensor heating heater, and a transceiver. The gas sucked from the duct 118a is deodorized and discharged from a deodorized air outlet provided on the bottom surface of the apparatus main body 180. A hydrogen gas sensor, an odorous gas sensor, a carbon dioxide sensor, a humidity sensor, a temperature sensor, a sensor heating heater, and a fan are provided in the duct 118a. Since the arrangement of the sensors in the duct 118a is the same as in the first embodiment, the description thereof is omitted. With such a configuration, the measuring device 106 of the present embodiment also uses the odorous gas sensor, the hydrogen gas sensor, and the carbon dioxide sensor to adjust the amount of odorous gas, hydrogen gas, and carbon dioxide contained in the defecation gas. The corresponding detection data can be acquired.

  The toilet seat 104 used together with the measuring device 106 of the present embodiment includes a toilet lid opening / closing device, a nozzle driving device, a nozzle cleaning device, a toilet cleaning device, and a toilet sterilization device. It is desirable to use a toilet seat with a washing function that can communicate with By using the measuring device 106 together with such a toilet seat, it is possible to perform various cleaning and sterilization operations when a strange odor gas is detected.

  In the first embodiment, as shown in FIG. 3, in the gas detection device 20, the hydrogen gas sensor 24 is provided on the upstream side of the deodorizing filter 78, but such a configuration is not necessarily required. FIG. 39 is a diagram illustrating a configuration of a gas detection device in the biological information measurement system of the third embodiment. Note that the third embodiment differs from the first embodiment only in the configuration of the gas detection device. As shown in the figure, in the present embodiment, in the gas detection device 120, the arrangement of the hydrogen gas sensor 24 is different from the embodiment shown in FIG. In the present embodiment, the hydrogen gas sensor 24 is provided downstream of the deodorizing filter 78 in the intake passage 18b. According to such a configuration, even when a sensor that reacts not only to hydrogen gas but also to odorous gas is used as the hydrogen gas sensor 24, the influence of odorous gas is detected from data output by the hydrogen gas sensor 24. Can be removed.

  Next, the biological information measuring system according to the fourth embodiment of the present invention will be described with reference to FIGS. 40 and 41. The biological information measurement system of the present embodiment is different from the first embodiment described above in the configuration and operation of the suction device. Here, only the points of the present embodiment that are different from the first embodiment will be described, and description of similar parts will be omitted.

  As shown in FIG. 40, in the present embodiment, the suction device 318 includes a main passage 318a that is a main intake passage, and a bypass passage 318b that is branched from the main passage 318a. While the carbon dioxide sensor 328 is disposed inside the main passage 318a, the odorous gas sensor 326 and the hydrogen gas sensor 324 are respectively disposed inside the bypass passage 318b, and thereby the gas detection device 320 is configured.

  The main passage 318a is composed of a vertical portion whose entrance opens downward and a horizontal portion extending horizontally from the upper end of the vertical portion, and a carbon dioxide sensor 328 is disposed inside the horizontal portion. Yes. Further, fins 322 for airflow agitation are provided at the entrance of the main passage 318a, and each component contained in the defecation gas is sucked into the suction device 318 in a uniformly distributed state. . Further, a filter 372 is disposed at the upstream end of the horizontal portion of the main passage 318a so as to cross the horizontal portion, thereby preventing entry of urine droplets and the like. Further, a deodorizing filter 378 is provided on the downstream side of the filter 372, a carbon dioxide sensor 328 is disposed on the downstream side, and a main suction fan 330 for the main passage 318a is disposed on the downstream side of the carbon dioxide sensor 328. Has been. In the main passage 318a, a duct cleaner and a humidity adjusting device can be provided as in the first embodiment (FIG. 3).

  On the other hand, the bypass passage 318b is a passage extending from the main passage 318a and extending horizontally on the downstream side of the filter 372 and the upstream side of the deodorizing filter 378. A flow path switching valve 332 is disposed at the inlet of the bypass passage 318b, and the flow path switching valve 332 switches between inflow and stop of the gas flowing into the main passage 318a into the bypass passage 318b. . In addition, a filter 336, an odorous gas sensor 326, a hydrogen gas sensor 324, and a bypass suction fan 334 are arranged in this order from the upstream side in the bypass passage 318b that is a measurement gas passage. The flow path switching valve 332 can be omitted. Furthermore, sensor heating heaters 354a and 354b for heating the detection units 326a and 324a of each sensor to a predetermined temperature are attached to the odorous gas sensor 326 and the hydrogen gas sensor 324. The first detection unit that is the detection unit 326a of the odorous gas sensor 326 and the second detection unit that is the detection unit 324a of the hydrogen gas sensor 324 are heated to a predetermined temperature by the heating heaters 354a and 354b. It is configured to detect gas.

  Here, when the suction device 318 is used as a deodorization device, the main suction fan 330 is operated, the bypass suction fan 334 is stopped, and the flow path switching valve 332 is closed. Thereby, the gas in the bowl 2a is sucked from the inlet of the main passage 318a, deodorized by the deodorizing filter 378 through the main passage 318a, and then discharged. When measuring the defecation gas sucked by the suction device 318, the main suction fan 330 and the bypass suction fan 334 are operated, and the flow path switching valve 332 is opened. Thereby, the gas sucked from the inlet of the main passage 318a is branched into the main passage 318a and the bypass passage 318b at a predetermined ratio and flows inside. In addition, since the gas sucked from the inlet of the main passage 318a is stirred by the fin 322 for airflow stirring, the defeased gas having substantially the same component flows into the main passage 318a and the bypass passage 318b.

  The defecation gas sucked into the main passage 318a passes through the filter 372 and the deodorizing filter 378, and then the carbon dioxide concentration (content) is measured by the carbon dioxide sensor 328. Since carbon dioxide is not adsorbed and removed by the filter 372 and the deodorizing filter 378, the measurement value is not affected by these. A part of the defecation gas sucked into the main passage 318a passes through the filter 372 and then branches to the bypass passage 318b. The gas concentration (amount) and the hydrogen gas concentration (amount) are measured. Here, the odorous gas sensor 326 and the hydrogen gas sensor 324 are disposed in a bypass passage 318 b that is a common measurement gas passage, and the odorous gas sensor 326 is disposed on the upstream side of the hydrogen gas sensor 324. Further, since the upstream odorous gas sensor 326 is disposed on the upstream side of the hydrogen gas sensor 324, the odorous gas sensor 326 is included in the defecation gas without being affected by the high temperature detection unit of the hydrogen gas sensor 324. A trace amount of odorous gas can be detected. Note that the odorous gas and the hydrogen gas are not adsorbed and removed by the filters 372 and 336, so that the measured values are not affected by them.

  Next, with reference to FIG. 41, the effect | action of the attraction | suction apparatus in this embodiment is demonstrated. 41 is a drawing corresponding to FIG. 4 in the first embodiment of the present invention. Steps S1 to S7 in the drawing correspond to steps S1 to S7 in FIG. 4, and each step is the same as FIG. Is performed. In FIG. 41, the heating temperature by the sensor heating heaters 354a and 354b attached to the odorous gas sensor 326 and the hydrogen gas sensor 324, and the air flow rate by the main suction fan 330 and the bypass suction fan 334 are associated with each process. Have been described.

  First, in the pre-measurement environment maintenance step S1, the main suction fan 330 and the bypass suction fan 334 are stopped. This is because air is actively taken into the main passage 318a and the bypass passage 318b when deodorization and gas measurement are not performed, and the detection unit of each gas sensor is unnecessarily contaminated by odorous gas remaining in the toilet room. This is to prevent it from being done. In the pre-measurement environment maintenance step S1, the temperatures of the sensor heating heater 354a for the odorous gas sensor 326 and the sensor heating heater 354b for the hydrogen gas sensor 324 are the sensors built in the control device 22 (FIG. 2). The temperature is set to 200 ° C., which is a standby temperature, by a temperature control device (not shown). Preferably, the standby temperature of the detection unit of the odorous gas sensor 326 and the hydrogen gas sensor 324 when the defecation gas is not detected is set to 300 ° C. or less, and in particular, the standby temperature of the detection unit of the odorous gas sensor 326 Is preferably set to 215 ° C. or lower. This standby temperature is such that even if hydrogen sulfide gas remains in the bypass passage 318b, hydrogen sulfide is not oxidized and sulfur dioxide is not generated, and when the subject enters the toilet room. The temperature is selected so that the detection part of each gas sensor can be raised to the temperature for detection before the start of measurement.

  Next, when the subject enters the toilet room, the process proceeds to the measurement start preparation step S2. When the process proceeds to the measurement start preparation step S2, the control device 22 sends a signal to the main suction fan 330 and the bypass suction fan 334 to operate them. Thereby, the air in the bowl 2a is sucked by the suction device 318, and a predetermined flow rate of air flows through the main passage 318a and the bypass passage 318b. The flow rate set at this time is a flow rate suitable for the measurement of the defecation gas. By setting the flow rate appropriately in advance, the flow rate can be sufficiently stabilized before the measurement is started.

  On the other hand, the sensor temperature control device increases the current flowing through the sensor heating heaters 354a and 354b, and raises the detection units 326a and 324a of the odorous gas sensor 326 and the hydrogen gas sensor 324 to 450 ° C., which is a cleaning temperature. This cleaning temperature is set to a temperature higher than the detection temperature, which is the temperature at the time of measurement of each detection unit. The air in the toilet room contains a small amount of aromatic hydrocarbons such as benzene, toluene, xylene, and straight-chain hydrocarbons such as methane, which are contained in air fresheners and automobile exhaust gases. Although the amount of the adhering substance is small, it adheres to each detection unit during standby. By raising the temperature of each detection unit to the cleaning temperature, a small amount of adhering matter adhering to the detection unit is rapidly desorbed / incinerated, and the detection unit can be cleaned. Preferably, the cleaning temperature is set to 420 ° C. or higher. Further, the sensor temperature control device reduces the temperature of each detection unit to the detection temperature after maintaining the temperature of each detection unit at the cleaning temperature for a predetermined time. Thereby, after each subject enters the toilet room, the respective detection units are stabilized at a predetermined temperature for detection until they are seated on the toilet seat 4 (FIG. 1).

  In the present embodiment, the detection unit 324a of the hydrogen gas sensor 324 is made of tin dioxide, the detection temperature is set to about 370 ° C., the detection unit 326a of the odorous gas sensor 326 is made of tungsten trioxide, and the detection temperature Is set to about 350 ° C. The detection temperature is set to a relatively low temperature, and heating of each detection unit heats the inner wall surface of the surrounding bypass passage 318b, so that sulfur dioxide is sufficiently generated on the inner wall surface. It is set to a temperature that can be suppressed. Preferably, the detection temperature is set to 410 ° C. or lower. In addition, for the detection unit 326a made of tungsten trioxide of the odorous gas sensor 326, the detection temperature is set to a constant temperature of about 280 ° C. to about 360 ° C., and the cleaning temperature is set to 420 ° C. or more. Is preferred. That is, since the odor gas sensor generally reacts with hydrogen gas, if the gas to be measured contains hydrogen gas, this will cause a measurement error. In the odorous gas sensor 326 having the detection unit 326a made of tungsten trioxide used in this embodiment, if the temperature of the detection unit 326a is set to a relatively low temperature of about 280 ° C. to about 360 ° C., the sensitivity to hydrogen gas is increased. It has been found by the present inventors that the odorous gas can be measured with high accuracy.

  Next, when the subject sits on the toilet seat 4 (sitting is detected by the seating detection sensor 36 (FIG. 2)), the process proceeds to the measurement reference value setting step S3. In the measurement reference value setting step S3, the air volume of each fan and the temperature of the detection part of each gas sensor are maintained at the previous values. In the measurement reference value setting step S3, gas detection is performed by each gas sensor, and a reference value for gas detection is acquired. Since the detection part of each gas sensor is set to the temperature for detection before shifting to the measurement reference value setting step S3, the reference value can be obtained immediately when the subject is seated.

  Further, when the subject starts defecation (the detection data of the odorous gas sensor 326 rises from the reference value), the process proceeds to the measurement step S4. In the measurement step S4, each of the hydrogen gas sensor 324, the odorous gas sensor 326, and the carbon dioxide sensor 328 in which a gas containing defecation gas is flowed at a constant flow rate in the main passage 318a and the bypass passage 318b and heated to a constant temperature. Measurement is performed by contacting the detection unit. The air volume of each fan and the temperature of the detection part of each gas sensor are maintained at constant values after the start of the measurement process S4 until the next examination process S5 is completed. Next, when the subject leaves the toilet seat 4, the procedure proceeds to a screening process S 5, and the measurement result of the defecation gas is displayed on the display device 68 (FIG. 2) in the screening process S 5. In addition, the subject operates the remote controller 8 to clean the flush toilet 2.

  Next, when the process proceeds to the communication step S6, the control device 22 sends a signal to the bypass suction fan 334 to stop it. As a result, the fecal gas remaining in the bowl 2a is sent to the hydrogen gas sensor 324 and the odorous gas sensor 326 in spite of the completion of the measurement, thereby preventing them from being contaminated. On the other hand, the main suction fan 330 is operated as it is, sucking the defecation gas remaining in the bowl 2a into the main passage 318a, and continuing the deodorization by the deodorization filter 378.

  Next, when the subject leaves the toilet room, the process proceeds to the post-measurement environment maintenance step S7. If it transfers to post-measurement environment maintenance process S7, the control apparatus 22 will send the signal to the bypass suction fan 334, and will perform the ventilation control which operates this by the maximum air volume. This is because the defecation gas remaining in the bowl 2a is sufficiently removed, and fresh air is applied to the detection units 324a and 326a of the hydrogen gas sensor 324 and the odorous gas sensor 326 to adhere to each detection unit. This is for blowing off foreign matter or the like.

  Further, after a predetermined time has elapsed after the bypass suction fan 334 is activated at the maximum air volume, the sensor temperature control device increases the current flowing through the sensor heating heaters 354a and 354b, and the odorous gas sensor 326 and the hydrogen gas sensor 324 The detection units 324a and 326a are raised to 450 ° C., which is a cleaning temperature. By raising the temperature of each detection unit to the cleaning temperature, it is possible to desorb / incinerate a small amount of adhering matter adhering to the detection unit during the measurement of the defecation gas and clean the detection unit. At this time, even if the temperature of the inner wall surface of the bypass passage 318b rises due to the heating of the detection units 324a and 326a, clean air is taken into the bypass passage 318b. It is never generated. If the concentration of the odorous gas measured by the odorous gas sensor 326 is not sufficiently reduced even after a predetermined time has elapsed after the bypass suction fan 334 is activated, the sensor temperature control device Do not raise the temperature of the heater and do not perform sensor cleaning. Accordingly, the temperature of the detection unit is raised in a state where the concentration of the odorous gas in the measurement gas passage is not sufficiently lowered, and sulfur dioxide is prevented from being generated on the inner wall surface of the bypass passage 318b.

  In the present embodiment, the sensor temperature control device maintains the temperature of each detection unit at the cleaning temperature for about 5 minutes, which is longer than the sensor cleaning performed in the measurement start preparation step S2. In addition, the desorbed residue is blown off from the detection unit by desorbing / burning the adhering material adhering to the detection unit while sending an air flow with the bypass suction fan 334. Next, the sensor temperature control device decreases the temperature of each detection unit to 200 ° C., which is the standby temperature, and then stops the bypass suction fan 334 and ends the post-measurement environment maintenance step S7. After completion of the post-measurement environment maintenance step S7, the process returns to the pre-measurement environment maintenance step S1. The main suction fan 330 is stopped after a predetermined time after the subject leaves the toilet seat 4. Thus, the sensor cleaning is performed before and after each defecation gas measurement. The sensor cleaning performed after the measurement step S4 may be configured to be performed after the subject leaves the toilet room or after the concentration of the odorous gas in the bypass passage 318b is reduced to a predetermined value or less. it can.

  In addition, the powerful sensor cleaning is executed at a predetermined time in the pre-measurement environment maintenance step S1. In this powerful sensor cleaning, first, the main suction fan 330 and the bypass suction fan 334 are operated with the maximum air volume. While these fans are operating, the sensor temperature control device raises the detection units 326a and 324a of the odorous gas sensor 326 and the hydrogen gas sensor 324 to 450 ° C., which is a cleaning temperature, and maintains the temperature for 15 minutes. Thereafter, the temperature is lowered to 200 ° C., which is a standby temperature. After each detecting unit is lowered to the standby temperature, the main suction fan 330 and the bypass suction fan 334 are stopped, and the strong sensor cleaning is finished. This powerful sensor cleaning can be configured to be automatically executed once a day, for example, at midnight when the subject rarely uses the toilet room. The powerful sensor cleaning takes longer time than the sensor cleaning performed before and after the measurement step S4, and removes deposits and the like adhering to the detection unit more strongly, which hinders the use of the toilet room. It is better to execute it during a less frequently used time so that it does not come. Further, since the strong sensor cleaning is performed in a state where the air in the bypass passage 318b is clean, sulfur dioxide is generated on the inner wall surface even when the temperature of the surrounding inner wall surface rises due to heating of each detection unit. There is nothing.

  In this embodiment, the strong sensor cleaning is executed for a longer time than the normal sensor cleaning, but the cleaning may be executed at a temperature higher than that of the normal sensor cleaning. Furthermore, in this embodiment, in the sensor cleaning after the measurement step S4 and the strong sensor cleaning, after the bypass suction fan 334 is activated, the temperature of each detection unit is increased after a while. It is also possible to simultaneously start up and raise the temperature of each detection unit. In this embodiment, in the pre-measurement environment maintenance step S1, the main suction fan 330 and the bypass suction fan 334 are stopped and the air flow is stopped. These fans may be operated. Furthermore, in this embodiment, during sensor cleaning, the main suction fan 330 and the bypass suction fan 334 that constitute a part of the suction device 318 are operated to apply airflow to each detection unit. In order to apply an airflow to each detection unit, a blower can be provided separately from the suction device 318.

  Next, a biological information measuring system according to a fifth embodiment of the present invention will be described using FIG. In the biological information measurement system of this embodiment, the configuration of the suction device is different from that of the first embodiment described above. Here, only the points of the present embodiment that are different from the first embodiment will be described, and description of similar parts will be omitted.

  As shown in FIG. 42, in the present embodiment, the suction device 418 includes a main passage 418a that is a main intake passage and a bypass passage 418b that is branched from the main passage 418a. A hydrogen gas sensor 424 and a carbon dioxide sensor 428 are arranged inside the main passage 418a, and an odorous gas sensor 426 is arranged inside the bypass passage 418b, and the gas detection device 420 is constituted by these.

  The main passage 418a is composed of a vertical portion whose inlet is opened downward, and a horizontal portion extending horizontally from the upper end of the vertical portion, and a hydrogen gas sensor 424 and a carbon dioxide sensor 428 are disposed inside the horizontal portion. Is arranged. Further, a sensor heating heater 454b for heating the sensor detection unit 424a to a predetermined temperature is attached to the hydrogen gas sensor 424. In addition, a fin 422 for stirring the airflow is provided at the entrance of the main passage 418a so that the components contained in the defecation gas are sucked into the suction device 418 in a uniformly distributed state. . Further, a filter 472 is disposed at the upstream end of the horizontal portion of the main passage 418a so as to cross the horizontal portion, thereby preventing entry of urine droplets and the like. Further, a deodorizing filter 478 is provided on the downstream side of the filter 472, and a hydrogen gas sensor 424 and a carbon dioxide sensor 428 are disposed on the downstream side, and a main suction fan 430 for the main passage 418a is provided on the downstream side thereof. Has been placed. In the main passage 418a, a duct cleaner and a humidity adjusting device can be provided as in the first embodiment (FIG. 3).

  On the other hand, the bypass passage 418b is a passage extending horizontally from the main passage 418a on the downstream side of the filter 472 and the upstream side of the deodorizing filter 478. A flow path switching valve 432 is disposed at the inlet of the bypass passage 418b, and the flow path switching valve 432 switches between inflow and stop of the gas flowing into the main passage 418a into the bypass passage 418b. . Further, a filter 436, an odorous gas sensor 426, and a bypass suction fan 434 are arranged in this order from the upstream side in the bypass passage 418b that is a measurement gas passage. The flow path switching valve 432 can be omitted. Further, a circulation passage 438 is provided in the bypass passage 418b so as to connect the upstream side of the odorous gas sensor 426 and the downstream side of the bypass suction fan 434. A flow path switching valve 440 is provided at the inlet of the circulation flow path 438 located downstream of the bypass suction fan 434.

  The flow path switching valve 440 switches the flow path between a discharge position where the defecation gas passing through the bypass suction fan 434 is discharged as it is and a circulation position where the defecation gas is allowed to flow into the circulation flow path 438 without being discharged. It is configured to be possible. Therefore, in the state where the flow path switching valve 440 is switched to the circulation position, the defecation gas that has flowed into the bypass passage 418b passes through the odorous gas sensor 426 and then passes through the circulation flow path 438 and again of the odorous gas sensor 426. It returns to the upstream side and circulates in the bypass passage 418b. Further, the odorous gas sensor 426 is provided with a sensor heating heater 454a for heating the sensor detection unit 426a to a predetermined temperature. The first detection unit, which is the detection unit 426a of the odorous gas sensor 426, is configured to detect gas while being heated to a predetermined temperature by the heating heater 454a.

Here, as described in the first embodiment, the detection unit 426a of the odorous gas sensor 426 is maintained at a temperature lower than that of the detection unit 424a of the hydrogen gas sensor 424 in order to reduce the sensitivity to hydrogen gas. If the detection unit 426a is set to a low temperature in this way, the responsiveness of the gas sensor may be lowered (the rise of the output signal becomes slow). In the present embodiment, since the defecation gas sucked by providing the circulation channel 438 circulates through the odorous gas sensor 426, the odorous gas in the defecation gas is reliably detected even when the responsiveness is lowered. be able to.
In addition, since the defecation gas is circulated by the circulation flow path 438, the flow path switching valve 440, and the bypass suction fan 434, these function as a circulation device. In addition, since the time during which the defecation gas contacts the detection unit of the odorous gas sensor 426 is extended by circulating the defecation gas, the circulation flow path 438, the flow path switching valve 440, and the bypass suction fan 434 extend the contact time. It also functions as a device.

  Alternatively, in the apparatus shown in FIG. 42, after defecation gas is sucked into the bypass passage 418b, the flow path switching valve 432 is closed, the flow path switching valve 440 is switched to the circulation position, and the bypass suction fan 434 is stopped. Thus, the defecation gas can be stored in the bypass passage 418b. Next, after defecation gas is stored for a predetermined time, the flow path switching valve 432 is opened, the flow path switching valve 440 is switched to the discharge position, and the bypass suction fan 434 is operated to discharge the defecation gas. As described above, by storing the defecation gas in the bypass passage 418b for a predetermined time, the time during which the defecation gas contacts the detection unit of the odorous gas sensor 426 can be extended. Therefore, the bypass passage 418b, the flow path switching valve 432, and the flow path switching valve 440 also function as a storage device that stores the defecation gas and a contact time extending device that extends the contact time of the defecation gas to the detection unit.

  In addition, when using the suction device 418 as a deodorizing device, the main suction fan 430 is operated, the bypass suction fan 434 is stopped, and the flow path switching valve 432 is closed. Thereby, the gas in the bowl 2a is sucked from the inlet of the main passage 418a, deodorized by the deodorizing filter 478 through the main passage 418a, and then discharged. Further, when the defecation gas sucked by the suction device 418 is measured, the main suction fan 430 and the bypass suction fan 434 are operated to open the flow path switching valve 432 and circulate through the flow path switching valve 440. Switch to position. Thereby, the gas sucked from the inlet of the main passage 418a is branched into the main passage 418a and the bypass passage 418b at a predetermined ratio and flows inside, and the gas flowing into the bypass passage 418b is bypassed through the circulation passage 438. It circulates in the passage 418b. Since the gas sucked from the inlet of the main passage 418a is stirred by the airflow stirring fins 422, the defeased gas having substantially the same component flows into the main passage 418a and the bypass passage 418b.

  The defecation gas sucked into the main passage 418a passes through the filter 472 and the deodorizing filter 478, and then the carbon dioxide concentration (content) is measured by the carbon dioxide sensor 428, and the hydrogen gas concentration (content) is measured by the hydrogen gas sensor 424. Is measured. Since carbon dioxide and hydrogen are not adsorbed and removed by the filter 472 and the deodorizing filter 478, the measured values are not affected by these. Further, a part of the defecation gas sucked into the main passage 418a passes through the filter 472, then branches to the bypass passage 418b, reaches the odor gas sensor 426 through the filter 436, and the odor gas concentration (quantity). ) Is measured. Since the odorous gas is not adsorbed and removed by the filters 472 and 436, the measured value is not affected by these.

  According to the biological information measuring system 1 of the embodiment of the present invention, the odorous gas sensor 26 has a redox reduction temperature (about 280) at which the oxidation-reduction reaction with respect to hydrogen gas decreases and the sensitivity with respect to the odorous gas relatively increases. (Fig. 31 and Fig. 32), even in an environment where the hydrogen gas component that causes noise is extremely large, a general semiconductor gas sensor is used to detect odorous gas with sufficient accuracy. Can be detected.

  Moreover, according to the biological information measurement system 1 of the present embodiment, the detection unit of the odorous gas sensor 26 heated to the oxidation-reduction temperature is made of a material different from the detection unit of the hydrogen gas sensor heated to the oxidation-reduction temperature. Therefore, a detection unit having high sensitivity to odorous gas and low sensitivity to hydrogen gas can be easily configured.

  Furthermore, according to the biological information measurement system 1 of the present embodiment, the change over time in a plurality of defecation actions of the relationship between the first index based on odorous gas and the second index based on health-related gas Based on the tendency, the physical condition of the subject is analyzed (FIG. 6). As a result, it is sufficient to be able to grasp the relative relationship between odorous gas and healthy gas for physical condition analysis, and high accuracy is not required. 26 can be used to analyze the physical condition of the subject.

  Further, according to the biological information measuring system 1 of the present embodiment, the temperature of the detection unit of the odorous gas sensor 26 is reduced to the redox reduction temperature (350 in FIG. 41) during standby (“pre-measurement environment maintenance process” in FIG. Lower than 200 ° C. (FIG. 41), it is difficult for the combustion reaction to occur on the detection section, and the generation of deposits due to incomplete combustion is suppressed. For this reason, the production | generation of the deposit in the longest waiting period can be suppressed, and the fall of a measurement precision can fully be suppressed.

  Furthermore, according to the living body information measurement system 1 of the present embodiment, sensor cleaning (“ Since the “measurement start preparation process” and “post-measurement environment maintenance process” are executed, accumulated products can be effectively removed, and noise generation can be suppressed.

  In addition, according to the biological information measurement system 1 of the present embodiment, sensor cleaning is performed after the subject enters the room and before gas detection is started (during the “measurement start preparation step” in FIG. 41). It is possible to sufficiently suppress a decrease in measurement accuracy while enabling accurate physical condition measurement.

  Furthermore, according to the biological information measuring system 1 of the present embodiment, the contact time extending device extends the time during which the defecation gas contacts the detection unit 426a (FIG. 42) of the odorous gas sensor 426, so that the response of the detection unit Even when the performance is lowered, it is possible to sufficiently detect a trace amount of odorous gas in the defecation gas.

  Further, according to the biological information measuring system 1 of the present embodiment, a storage device that stores defecation gas for a predetermined time (bypass passage 418b, flow path switching valve 432, circulation flow path 438, and flow path switching valve 440 in FIG. 42). Alternatively, the contact time is extended by the circulation device (the bypass passage 418b, the passage switching valve 432, the bypass suction fan 434, the circulation passage 438, and the passage switching valve 440 in FIG. 42) that circulates the defecation gas in the passage. Therefore, the contact time of the defecation gas with respect to the first detection unit can be easily extended with a simple configuration.

  Furthermore, according to the biological information measuring system 1 of the present embodiment, the detection unit 326a of the odorous gas sensor 326 and the detection unit 324a (FIG. 40) of the hydrogen gas sensor 324 are arranged in a common measurement gas passage (bypass passage 318b). Therefore, the two detection units can be placed in an equivalent environment, and the consistency of detection data by each detection unit can be ensured. Moreover, since the detection part 326a is arrange | positioned in the upstream of the detection part 324a, the detection part of the hydrogen gas sensor currently maintained at higher temperature than the detection part of an odorous gas sensor is a trace amount of odorous gas in a defecation gas. It is possible to prevent components from being affected and causing measurement errors.

As mentioned above, although preferred embodiment of this invention was described, in embodiment mentioned above, the health system gas and odorous gas in the defecation gas were detected, and the physical condition state of the test subject was judged based on the relationship between them. . On the other hand, as a modification, the present invention can be configured to analyze the physical condition of the subject based only on the estimated odorous gas concentration or content in the defecation gas.
Further, in the above-described embodiment, the detection unit that is set to the oxidation-reduction temperature and the detection unit that is set to the oxidation-reduction temperature are provided separately. The present invention can also be configured by switching the temperature of a single detection unit disposed therein between an oxidation reduction temperature and an oxidation reduction temperature.

  In the above-described embodiment of the present invention, the defecation gas discharged into the bowl of the toilet bowl is aspirated and analyzed. Defecation gas can be collected from other than the bowl. For example, in the embodiment shown in FIG. 38, a suction pipe can be connected to the tip of the duct 118a, and fecal gas can be collected directly from the subject via the suction pipe. In this case, a sheet-like defecation gas collection device (not shown) is connected to the tip of the suction pipe, and this sheet-like defecation gas collection device is incorporated into the subject's bedding (bedclothes or comforters). By so doing, defecation gas exhausted by the subject can be aspirated. The sucked defecation gas is sucked from the duct 118a through a suction pipe, and detection data is acquired by a gas sensor incorporated in the apparatus main body 180. Alternatively, a defecation gas collection device can be incorporated in the underwear or diaper of the subject. It is also possible to measure the defecation gas by directly incorporating gas sensors necessary for the bedding of the subject, underwear, diapers, etc., and analyze the physical condition. In this case, the detection data from the gas sensor is preferably transmitted wirelessly to the subject-side device or the server.

  Further, in the above-described embodiment, hydrogen gas, methane gas, carbon dioxide gas, and the like were detected as the health system gas, but in many subjects, the defecation gas contains hydrogen gas as the health system gas, While the methane gas is not included, in some subjects, the stool gas contains methane gas but the hydrogen gas is not included in the study by the present inventors. . For this reason, when measuring health gas, it is preferable to provide a gas detection device capable of detecting both hydrogen gas and methane gas. In addition, in the case of an apparatus that targets a specific subject who knows which health system gas is discharged, only one of the gases can be detected.

R Toilet room 1 Biological information measuring system according to the first embodiment of the present invention 2 Flush toilet 2a Bowl 4 Toilet seat 6 Measuring device 8 Remote control 10 Subject side device 12 Server 14 Terminal for subject 16 Medical institution terminal 18 Suction device 18a Duct 18b Inhalation Passage (gas passage for measurement)
18c Suction fan 20 Gas detection device 22 Control device 22a CPU
22b Storage device 24 Hydrogen gas sensor 26 Odor gas sensor 28 Carbon dioxide sensor 30 Humidity sensor 32 Temperature sensor 34 Entrance detection sensor 36 Seat detection sensor 38 Defecation / urine detection sensor 40 Toilet lid opening / closing device 42 Nozzle driving device 44 Nozzle cleaning device 46 Toilet cleaning Equipment 48 Toilet bowl sanitizer (hypochlorous acid water cleaning device, calibration gas generator, deterioration measuring device)
DESCRIPTION OF SYMBOLS 50 Air freshener sprayer 52 Deodorizing air supply device 54 Sensor heating heater 56 Transmitter / receiver 58 Duct cleaner 59 Humidity adjustment device 60 Data analysis device 60a Gas arithmetic circuit 60b Suitability holding circuit 62 Subject identification device 64 Input device 66 Transmitter / receiver 68 Display Device 70 Speaker 72 Filter 78 Deodorizing filter 101 Biological information measurement system 104 of the fourth embodiment Toilet seat 106 Measuring device 118a Duct 180 Device body 182 Power cord 120 Gas detection device 283a Main path 283b Branch path 284 Flow path of the fifth embodiment Switching valve 286 Column 288 Semiconductor gas sensor 290 Pump 318 Suction device 318a Main passage 318b Bypass passage (measurement gas passage)
320 Gas detection device 322 Fin 324 Hydrogen gas sensor 326 Odorous gas sensor 328 Carbon dioxide sensor 330 Main suction fan 332 Channel switching valve 334 Bypass suction fan 336 Filter 372 Filter 354a, 354b Sensor warming heater 378 Deodorization filter 418 Suction device 418a Main passage 418b Bypass passage 420 Gas detection device 422 Airflow stirring fin 424 Hydrogen gas sensor 424a Detection unit 426 Odorous gas sensor 426a Detection unit 428 Carbon dioxide sensor 430 Main suction fan 432 Channel switching valve 434 Bypass suction fan 436 Filter 438 Circulation channel 440 Flow path switching valve 454a Sensor heating heater 454b Sensor heating heater 472 Filter 478 Deodorization filter

Claims (14)

A biological information measurement system for measuring the physical condition of a subject based on defecation gas discharged into a bowl of a toilet bowl installed in a toilet room,
A suction device for sucking the gas in the bowl from which the fecal gas has been discharged by the subject;
A gas detection device comprising a gas sensor that reacts to odorous gas and sulfur gas containing sulfur components contained in the defecation gas sucked by the suction device;
A control device for controlling the suction device and the gas detection device;
A data analysis device for analyzing the physical condition of the subject based on the detection data detected by the gas detection device;
An output device for outputting the analysis result by the data analysis device,
The gas sensor is configured to detect gas while being heated to a predetermined temperature, and the detection unit of the gas sensor includes an oxidation-reduction temperature that reacts with the hydrogen gas by an oxidation-reduction reaction, and oxidation-reduction with respect to the hydrogen gas. The gas is detected at a redox reduction temperature at which the reaction decreases and the sensitivity to the odorous gas relatively increases,
The biological information measurement system, wherein the data analysis device obtains the content or concentration of the odorous gas based on detection data of the gas sensor.   The gas sensor is made of a material that reacts with the hydrogen gas and the odorous gas, and reacts with the first detection unit that is heated to the redox reduction temperature, the hydrogen gas, and the odorous gas. And a second detector that is made of a material that does not react or is less likely to react with the odorous gas than the first detector, and is heated to a redox temperature higher than the redox lowering temperature. The biological information measurement system according to 1.   Furthermore, a subject identification device for identifying a subject who uses the toilet, and a storage device that stores detection data detected by the gas detection device for each subject identified by the subject identification device. The data analysis device includes a first index based on the detection data of the odorous gas stored in the storage device, and a first index based on detection data of hydrogen gas, carbon dioxide gas, or methane gas which are health gases. The biological information measurement system according to claim 2, wherein a relationship with the index of 2 is obtained, and the physical condition of the subject is analyzed on the basis of a temporal change tendency in a plurality of bowel movements of the obtained relationship.   The biological information measurement according to claim 3, wherein the control device reduces the temperature of the first detection unit to a temperature lower than the redox reduction temperature when gas detection by the gas detection device is not performed. system.   The control device cleans the first detection unit by heating the temperature of the first detection unit to a temperature higher than the redox reduction temperature when gas detection by the gas detection device is not performed. The biological information measurement system according to claim 4, wherein the biological information measurement system is configured to perform sensor cleaning.   Furthermore, it has an entrance detection sensor which detects the test subject's entrance into the said toilet room, The said control apparatus performs the said sensor cleaning before gas detection is started after a test subject's entrance. Biological information measurement system.   The biological information measurement system according to claim 4, further comprising a contact time extending device that extends a time during which the defecation gas sucked by the suction device contacts the first detection unit.   In the contact time extending device, the storage device for storing the defecation gas sucked in the space where the first detection unit is arranged for a predetermined time, or the first detection unit is arranged for the sucked defecation gas. The biological information measurement system according to claim 7, wherein the biological information measurement system is a circulation device that circulates in a flow path.   The first detector is made of a material containing tungsten trioxide, the second detector is made of a material containing tin dioxide, the oxidation-reduction temperature is 280 to 360 ° C., and the oxidation The biological information measurement system according to claim 4, wherein the reduction temperature is 370 ° C. or higher.   The biological information measurement system according to claim 9, wherein the control device maintains the first detection unit at a constant temperature between 280 and 360 ° C. during gas detection.   The living body according to claim 9, wherein the control device reduces the temperature of the first detection unit and the second detection unit to a temperature of 300 ° C. or less when gas detection by the gas detection device is not performed. Information measurement system.   The biological information measurement system according to claim 5, wherein the control device maintains the temperature of the first detection unit at a temperature of 420 ° C. or higher for a predetermined time in the sensor cleaning.   The biological information measurement system according to claim 11, wherein the control device reduces the temperature of the first detection unit to a temperature of 215 ° C. or lower when gas detection by the gas detection device is not performed.   The first and second detection units of the gas sensor are disposed in a common measurement gas passage through which the sucked defecation gas flows, and the first detection unit is upstream of the second detection unit. The biological information measuring system according to claim 2, which is disposed on the side.