JP5574997B2 - Air conditioning control system - Google Patents

Description

  The present invention relates to an air conditioning control system that improves indoor sleeping environment by controlling indoor temperature and humidity based on changes in biological information during sleep.

  2. Description of the Related Art Conventionally, an apparatus using a Doppler radar sensor is known as a method for acquiring a biological state such as respiration, heartbeat, and body movement without contact. As a biological state acquisition apparatus using a Doppler radar sensor, for example, in Patent Document 1 below, a microwave is transmitted toward a human body, and a frequency of a Doppler signal that is a change in wavelength of the transmitted wave and a reflected wave from the human body is obtained. A technique for calculating and calculating a person's pulse rate or respiration rate from the frequency is disclosed.

  In addition, using the biological state information obtained by this type of biological state acquisition device disclosed in Patent Document 1 below, a technique for estimating the sleep depth of the sleeper, a technique for estimating the state of the autonomic nervous function, Furthermore, techniques for controlling various devices based on biological state information are disclosed in Patent Documents 2 and 3 below.

  Moreover, the sleep stage based on the international judgment criteria which classify | categorize the sleep depth proposed by Rechtschaffen and Kales into 6 steps from the biological state information measured using the techniques of the following patent documents 1 to 3 and the like, and estimated sleep A technique for controlling various devices according to the stage is disclosed in Patent Document 4 below.

JP 2002-71825 A (page 3) JP 2006-263032 A (6th to 8th pages, FIG. 1) JP 05-92040 A (2nd page, 3rd page, FIG. 1) JP 2005-253847 A (page 10)

  However, according to the above conventional technique (Patent Document 4), the target value corresponding to the sleep stage estimated from the biological state information at each time point is transmitted to the air conditioner, and the target value of the air conditioner is the sleep depth. It is not changed unless it is detected that it has changed. For this reason, when it is necessary to perform control such that cooling is concentrated in a section where the sleep stage changes, the corresponding control cannot be performed. In addition, when the air conditioning capacity of the air conditioner is small, a delay time occurs until the indoor air conditioning environment reaches the target value state, and until the indoor air conditioning environment reaches the target value state, Therefore, there is a problem that the air conditioning state becomes inappropriate and the sleeper feels uncomfortable such as being too cold or too hot, leading to arousal during the sleep.

  The present invention has been made in view of the above, and by detecting the amount of change in biological information, the transition of the sleep stage can be recognized, and the target value of the air conditioner is changed to the state of the body. The purpose is to obtain an air conditioning control system that can create a finely tuned indoor air conditioning environment.

  In order to solve the above-described problems and achieve the object, the present invention is an air-conditioning control system that performs air-conditioning control of an air conditioner, and periodically acquires biological information of a sleeping person who is a sleeping person. Biometric information acquisition means, biometric information storage means for storing the biometric information, sleep state detection means for calculating a change in the biometric information of the sleeping person based on the biometric information stored in the biometric information storage means, , An indoor state detection unit that detects an indoor state of an air conditioner of the air conditioner, a control target value determination unit that determines a control target value of the air conditioner based on the change in the biological information and the indoor state, And air conditioning set value control means for controlling the air conditioner based on the control target value.

  Advantageous Effects of Invention According to the present invention, it is possible to perform air conditioning intensively in a section in which the biological state is changing, and it is possible to create a detailed indoor air conditioning environment that matches the body state.

FIG. 1 is a diagram illustrating a control state of a conventional air conditioning control system. FIG. 2 is a diagram illustrating an indoor installation example of the air conditioning control system. FIG. 3 is a diagram illustrating a configuration example of an air conditioning control system. FIG. 4 is a diagram illustrating a change in the state of a sleeper from the start of sleep to wake-up. FIG. 5 is a diagram illustrating a configuration example of an air conditioning control table. FIG. 6 is a flowchart showing a control operation during cooling operation. FIG. 7 is a flowchart showing the process of detecting sleep onset when the biological information is the number of body movements. FIG. 8 is a diagram illustrating changes in sleep state from sleep start to wake-up during cooling operation and changes in room temperature due to air conditioning control. FIG. 9 is a diagram illustrating changes in sleep state from sleep start to wake-up during heating operation and changes in room temperature due to air conditioning control. FIG. 10 is a diagram illustrating an indoor installation example of the air conditioning control system. FIG. 11 is a diagram illustrating a configuration example of an air conditioning control system and an air conditioner.

  Embodiments of an air conditioning control system according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
First, the control in the conventional air conditioning control system will be briefly described. In a conventional air conditioning control system, air conditioning control is performed based on a target value corresponding to a sleep stage estimated from biological state information at each time point. FIG. 1 is a diagram illustrating a control state of a conventional air conditioning control system. The solid line indicates the sleeping state of the sleeping person (the sleep is shallower as it is above and the sleep is deeper as it is below), and the broken line indicates the temperature change in the room (the higher the temperature is, the higher the temperature is). The horizontal axis indicates the elapsed time. FIG. 1 is a diagram illustrating changes in sleep depth and temperature changes during overnight sleep. In the conventional air conditioning control system, since the target value of the air conditioner can only be changed after detecting that the sleep depth has changed, as shown in FIG. 1, there is a delay until the indoor air conditioning environment reaches the target value state. Time will be generated. Therefore, in this embodiment, an air conditioning control system that does not cause a delay until the indoor air conditioning environment reaches the target value state will be described.

  FIG. 2 is a diagram illustrating an indoor installation example of the air conditioning control system according to the present embodiment. As shown in FIG. 2, the air conditioning control system is a system built in an air conditioner 100 installed indoors, and acquires the biological information of a sleeping person who is a sleeping person to obtain the air conditioner 100. Control. Here, the air conditioner 100 sets a room where a sleeping person is present as an air-conditioning target. The ecological information acquisition unit 2 and the room information detection unit 5 shown in FIG. 2 will be described later.

  Next, the configuration of the air conditioning control system will be described. FIG. 3 is a diagram illustrating a configuration example of the air conditioning control system 1. The air conditioning control system 1 includes a biometric information acquisition unit 2 that detects biometric information of a sleeping person using a biometric sensor installed in front of the air conditioner 100, and a biometric information storage unit 3 that stores the detected biometric information. The sleep state detection unit 4 that calculates the sleep state from the biological information, the indoor state detection unit 5 that is installed in front of the air conditioner 100 and detects the temperature and humidity of the room by monitoring the room, and the sleeping person A control target value determination unit 6 that determines a control target value of the air conditioner 100 according to the sleep state and the state of the air conditioner 100, and an air conditioning set value control unit 7 that controls the air conditioner 100 to be a control target value set. And comprising. In FIG. 3, only the configuration of the main part according to the present embodiment is shown, and illustration of various components normally provided in the air conditioner such as a blower fan and a refrigeration cycle is omitted.

  The biological information acquisition unit 2 is an unconstrained biological sensor that does not hinder the sleep of the sleeper. For example, it is assumed that at least one of a Doppler radar sensor, a pyroelectric sensor, a thermopile sensor, and a camera is included. The biological information acquisition unit 2 detects biological information (body motion, heartbeat, body surface temperature, etc.) of the sleeping person, and a biological information signal (body motion signal, heartbeat signal, etc.) indicating the biological information is stored in the biological information storage unit 3. Output to. As the output timing, the biological information acquisition unit 2 detects the biological information of the sleeping person once every predetermined time T1 seconds (for example, 30 seconds), and outputs the detected biological information signal to the biological information storage unit 3. To do.

  The biological information storage unit 3 includes a memory and a storage unit similar to the memory, and is connected to the biological information acquisition unit 2 and the sleep state detection unit 4. The biological information storage unit 3 outputs the biological information signal output from the biological information acquisition unit 2 to the output time and the content of the biological information signal (voltage value indicating the number of body movements and the size of the body movement, the number of heartbeats). Etc.) in the order of output.

  The sleep state detection unit 4 includes a sleep state flag determination unit 41, a sleep state detection unit 42, and a sleep state calculation unit 43, and is connected to the biological information storage unit 3 and the control target value determination unit 6. The sleep onset flag determination unit 41 is a sleep onset flag 411 indicating whether the sleeper is on sleep (the sleep state will be described later). If the sleep flag 411 is OFF, it is determined that the user has not fallen asleep, and the process proceeds to the sleep detection unit 42 that determines sleep. Further, when the sleep onset flag 411 is ON, the sleep onset determination unit 41 determines that sleep onset is over, and shifts the processing to the sleep state calculation unit 43 that determines the sleep state.

  Here, the sleep state will be described. FIG. 4 is a diagram illustrating a change in the state of a sleeper from the start of sleep to wake-up. Specifically, changes in the sleep state of the sleeper from the start of sleep to wake-up, changes in deep body temperature (rectal temperature), and changes in the number of body movements are shown. First, sleep is roughly classified into REM (Rapid Eye Movement) sleep, which is generally light sleep, and non-REM sleep, which is deep sleep. Sleep states are further defined in detail, and six states of awakening, REM sleep, and sleep depths 1, 2, 3, and 4 are defined. The sleep depths 1, 2, 3, and 4 are obtained by further dividing the non-REM sleep into four stages. Among the non-REM sleep, the sleep depth 1 is the shallowest sleep and the sleep depth 4 is the deepest sleep. In this article, sleep depths 1 and 2 are referred to as shallow sleep, and sleep depths 3 and 4 are referred to as deep sleep.

  As shown in FIG. 4, when the sleeper starts sleeping, the deep body temperature decreases and reaches the first deep sleep. This sleep is assumed to be sleepy, and after sleeping, until the next time it wakes up, deep sleep, light sleep, REM sleep and sleep shift to become shallow, and then REM sleep, light sleep, deep sleep and sleep deepen The sleep cycle of shifting to is usually repeated at a period of about 90 minutes. As shown in FIG. 4, in many cases, when there is a lot of body movement, it is close to awakening, and when there is little body movement, it is deep sleep.

  Returning to the description of the sleep state detection unit 4 of FIG. The sleep onset detection unit 42 determines whether the sleeper has fallen asleep when the sleep onset flag 411 is OFF. The sleep flag 411 is set to ON when the sleeper enters the state of deep sleep for the first time after the sleeper starts to sleep, and thereafter it is not determined whether the user has fallen asleep.

  The sleep state calculation unit 43 determines the sleep state of the sleeping person when the sleep flag 411 is ON. The sleep state calculation unit 43 determines the sleep state of the sleeper based on the biological information stored in the biological information storage unit 3, and the sleep state is shallow (such as deep sleep, shallow sleep, and REM sleep). A sleep signal that indicates that the sleep state is deep, and a deep sleep signal that indicates that the sleep state is deep (transfers like REM sleep, light sleep, and deep sleep), or the sleep state is stable The sleep state signal at least one of the stable sleep signals indicating that the control is being performed is periodically output to the control target value determination unit 6.

  The indoor state detection unit 5 includes an indoor temperature detection unit 51 and an indoor humidity detection unit 52 and is connected to the control target value determination unit 6. The room temperature detection unit 51 is composed of a thermistor or a similar one, detects the room temperature, and outputs a temperature detection signal indicating the temperature to the control target value determination unit 6. The indoor humidity detection unit 52 is composed of a humidity sensor and the like, detects the indoor humidity, and outputs a humidity detection signal indicating the humidity to the control target value determination unit 6.

  The control target value determination unit 6 is a sleep state signal from the sleep state detection unit 4, each detection signal (temperature and humidity) indicating the current indoor state from the room state detection unit 5, and air conditioning from the air conditioning set value control unit 7. The machine setting value is received, and the target value of the indoor environment for providing an energy-saving and comfortable sleep environment is determined according to the received signal. The control target value determination unit 6 stores an air conditioning control table in which target values (target temperature and target humidity) for each state of sleep state change are specified according to the operation mode (cooling operation, heating operation, etc.) shown in FIG. doing. The control target value determination unit 6 changes a target value (set temperature or set humidity) for the air conditioning set value control unit 7 based on an air conditioning control table set in consideration of energy saving and comfort. Then, an air conditioning control signal for controlling the air conditioner 100 to the changed target value is transmitted to the air conditioning set value control unit 7.

  FIG. 5 is a diagram illustrating a configuration example of an air conditioning control table. The air conditioning control table includes an operation mode, a reception signal, a target temperature (° C.), and a target humidity (%). For example, when the “deep sleep signal” is received when the operation mode is “cooling operation”, the target temperature is “initial set temperature−1.0” (° C.) and the target humidity is “60” (%). It shows that.

  The air conditioning set value control unit 7 receives the air conditioning control signal from the control target value determination unit 6 and, based on the changed target value, the blowout temperature, humidification / dehumidification of the air conditioner 100, the rotational speed of the outdoor compressor, etc. The environment is constructed so that the indoor temperature and humidity become the target values.

  Each block is processed by an electronic circuit including a microcomputer to control the entire air conditioning control system 1.

  Next, the air conditioning control operation of the air conditioning control system in the present embodiment will be described. First, the case where the operation mode is the cooling operation will be described. FIG. 6 is a flowchart showing a control operation during cooling operation.

  First, when the air conditioning control system 1 is activated, the sleep / sleep flag determination unit 41 turns off the sleep / sleep flag 411 (step S1).

  Next, the control target value determination unit 6 acquires the air conditioner set value that is the current target value (set temperature, set humidity) of the air conditioner 100 from the air conditioning set value control unit 7, and uses this as the initial set value. Store (step S2).

  Next, the biological information acquisition unit 2 detects and acquires the biological information (for example, the number of body movements) of the sleeping person (step S3), inputs the detected biological information to the biological information storage unit 3, and the biological information storage unit 3 receives the biological information. Information is stored (step S4).

  The sleeping flag determining unit 41 checks the sleeping flag (step S5), and when the sleeping flag is OFF (step S5: No), the sleeping sleep detecting unit 42 stores the living body of the sleeping person stored in the biological information storage unit 3. Based on the information, an evaluation index is calculated to determine sleep onset (steps S6 to S11). FIG. 7 is a flowchart showing the process of detecting sleep onset when the biological information is the number of body movements.

  Specifically, the sleep detection unit 42 acquires the latest biological information (in this case, information on the number of body movements) from the biological information stored in the biological information storage unit 3 (step S6), and sets the value of the biological information. Confirm (step S7). For example, when the biological information to be used is information on the number of body movements, the evaluation index (body movement evaluation index in the case of information on the number of body movements) is the latest number of body movements acquired by the biological information acquisition unit 2. When the number of body movements is 0, that is, when the body information acquisition unit 2 has never occurred until the latest data acquisition after the previous data acquisition (step S7: Yes), the body movement evaluation The count of the index Ac is increased by 1 (step S8).

  Then, the sleep detection unit 42 checks whether or not the body motion evaluation index Ac = 10 (step S9). As shown in FIG. 4, in many cases, it is close to awakening when there is a lot of body movement, and deep sleep when there is little body movement. Therefore, the sleep detection unit 42 determines that the sleeper has fallen asleep when the body motion evaluation index Ac is equal to or greater than a predetermined value, for example, the body motion evaluation index Ac = 10. Here, assuming that the body motion evaluation index Ac is not 10 (step S9: No), the process returns to step S3 to repeat the process of detecting biological information again (steps S3 to S8).

  Then, the sleep detection unit 42 checks again whether the body movement evaluation index Ac = 10 (step S9). Here, assuming that the body movement evaluation index Ac = 10, that is, there is no body movement in a predetermined period (step S9: Yes), the sleep detection unit 42 determines that the sleeper has fallen asleep, and the sleep sleep flag 411. Is turned ON (step S10).

  When the body movement evaluation index Ac is a constant value, for example, when body movement is detected even once before Ac = 10 (step S7: No), the sleep detection unit 42 determines the value of the body movement evaluation index Ac. Reset to 0 (step S11). And it returns to step S3 and repeats the process which performs biometric information detection again (step S3-S8).

  As a result of the sleep flag determination unit 41 confirming the sleep flag, when the sleep flag is ON (step S5: Yes), the sleep state calculation unit 43 acquires the biological information of the sleeping person stored in the biological information storage unit 3. Then, the change amount of the biological information is calculated using the acquired biological information, and the current sleep state is determined (steps S12 to S18).

  Specifically, the sleep state calculation unit 43 acquires the past n pieces (for example, 10 pieces) of biological information from the biological information stored in the biological information storage unit 3 (step S12), and calculates the amount of change. (Step S13). As a method of calculating the amount of change in the biological information, for example, when the biological information to be used is information on the number of body movements, the number of body movements from the current time acquired by the biological information acquisition unit 2 to the tenth previous time is represented by xi (i = 0, 1, 2,..., 9: x0 is the latest information, and every time i increases, it becomes the past information), and the acquisition time of each body motion count is expressed as yi (i = 0, 1, 2,... 9: When y0 is the latest information and becomes past information every time i increases), the following equation (1) is used to derive the slope of the regression line with the number of known body movements as an element. Then, a change amount (differential coefficient) of the body motion information is calculated (step S13).

  When the calculated change amount of the biological information satisfies the condition X1, for example, the condition that “the change amount is negative” (step S14: Yes), the sleep state calculating unit 43 has shifted to deep sleep. And a deep sleep signal indicating that the control target value determination unit 6 has shifted to deep sleep is transmitted (step S15).

  The control target value determination unit 6 that has received the deep sleep signal sets the target value based on the deep sleep signal from the sleep state calculation unit 43 and the indoor state information periodically received from the indoor state detection unit 5. To determine whether it is necessary to change the control target value for the air conditioner 100.

  In addition, the indoor state detection part 5 shall transmit the indoor information detected by each detection part to the control target value determination part 6 regularly by each detection signal. Specifically, at regular intervals (for example, every minute), the indoor temperature detecting unit 51 detects the indoor temperature, the indoor humidity detecting unit 52 detects the indoor humidity, and the detected values are set as control target value determining units. 6 to send.

  Here, when the sleeper is in a deep sleep state, the body's temperature regulation function is lowered, and if the body feels hot in this state, the body temperature cannot be regulated by metabolism, resulting in a malfunction. Therefore, it is desirable for the air conditioning control system 1 to lower the set temperature so as not to feel hot in a deep sleep state.

  The control target value determination unit 6 that has received the room information from the indoor state detection unit 5 by each detection signal, in the air conditioning control table (see FIG. 5) held by itself, based on the conditions of the cooling operation mode and the deep sleep signal reception. Based on this, the target temperature is set to an initial set temperature of −1.0 ° C., the target humidity is set to 60%, and an air conditioning control signal for instructing the change of the target value is transmitted to the air conditioning set value control unit 7. At this time, when the room temperature is lower than the target temperature, the air conditioner control signal including the fact that the power of the air conditioner 100 is turned off is transmitted to the air conditioning set value control unit 7 so that the room temperature approaches the target temperature. . The air conditioning control signal may include information such as wind direction, air volume, and wind speed in addition to the set temperature and set humidity.

  When the calculated change amount of the biological information satisfies the condition X2, for example, “the change amount is positive” (step S14: No, step S16: Yes), the sleeping state calculation unit 43 It determines with having shifted to light sleep, and transmits the light sleep signal which shows having transferred to light sleep to the control target value determination part 6 (step S17).

  Here, when the sleeper is in a light sleep state, the body is close to an awake state and is sensitive to temperature changes. If the sleeper is too cold in this state, the person feels uncomfortable and gets up. Therefore, it is desirable for the air conditioning control system 1 to set the set temperature high so as not to feel discomfort due to cold in a light sleep state.

  The control target value determination unit 6 that has received the shallow sleep signal similarly receives the room information from the indoor state detection unit 5 by each detection signal, and holds it from the conditions of the cooling operation mode and the shallow sleep signal reception. Based on the air conditioning control table (see FIG. 5), the target temperature is set to the initial set temperature + 2.0 ° C., the target humidity is set to 50%, and an air conditioning control signal for instructing the change of the target value is sent to the air conditioning set value control unit 7. Send. At this time, when the room temperature is lower than the target temperature, the air conditioner control signal including the fact that the power of the air conditioner 100 is turned off is transmitted to the air conditioning set value control unit 7 so that the room temperature approaches the target temperature. .

  Moreover, in the sleep state calculation part 43, when the variation | change_quantity of the calculated biometric information does not satisfy | fill neither conditions X1 and X2, for example, it is 0 (step S14: No, step S16: No), it exists in a stable sleep state. And a stable sleep signal indicating a stable sleep state is transmitted to the control target value determination unit 6 (step S18).

  Here, when the sleeping person is in a stable sleep state, the set temperature is set high in order to further improve the energy saving performance. At this time, it is desirable for the air conditioning control system 1 to set the set humidity low so that the set temperature is not uncomfortable.

  The control target value determination unit 6 that has received the stable sleep signal similarly receives the room information from the indoor state detection unit 5 by each detection signal, and holds it from the conditions of the cooling operation mode and the stable sleep signal reception. Based on the air conditioning control table (see FIG. 5), the target temperature is set to the initial set temperature + 2.0 ° C., the target humidity is set to 50%, and an air conditioning control signal for instructing the change of the target value is sent to the air conditioning set value control unit 7. Send. At this time, when the room temperature is lower than the target temperature, the air conditioner control signal including the fact that the power of the air conditioner 100 is turned off is transmitted to the air conditioning set value control unit 7 so that the room temperature approaches the target temperature. .

  The control target value determination unit 6 does not transmit an air conditioning control signal to the air conditioning set value control unit 7 when there is no change in the control target value, that is, when the latest control target value is the same as the previous time.

  The air conditioning set value control unit 7 receives the air conditioning control signal from the control target value determining unit 6 and controls the air conditioner 100 based on the target temperature and the target humidity instructed by the air conditioning control signal. FIG. 8 is a diagram illustrating changes in sleep state from sleep start to wake-up during cooling operation and changes in room temperature due to air conditioning control. The change of a biological state and room temperature at the time of air-conditioning by the change of biometric information is shown. In FIG. 8, the solid line is the sleep state of the sleeping person (the sleep is shallower when it is above, the deeper the sleep is when it is below), the broken line is the indoor temperature change (the higher the temperature is, the higher the temperature is), and the alternate long and short dash line is air conditioning The change in the set temperature (the upper is the initial set temperature + 2.0 ° C., the lower is the initial set temperature −1.0 ° C., and the black circle is the power ON / OFF). In addition, the horizontal axis represents elapsed time, and shows changes in sleep depth and temperature changes during overnight sleep. As shown in FIG. 8, the air conditioning control system 1 can change the room temperature in the sleep state in real time, and can obtain a more comfortable sleep. Here, the change in humidity is not shown, but changes in the same manner as the change in temperature.

  Next, the case where the operation mode is the heating operation will be described. When the operation mode is the heating operation, each step from Step S1 to Step S18 is the same as that in the cooling operation. Therefore, detailed description will be omitted and different parts will be described.

  In step S15, when the sleep state calculation unit 43 transmits the deep sleep signal, the control target value determination unit 6 receives the room information from the indoor state detection unit 5 by each detection signal, and receives the heating operation mode and the deep sleep signal. Based on the above condition, based on the air conditioning control table (see FIG. 5) held by itself, the target temperature is set to the initial set temperature of −1.0 ° C., the target humidity is set to 45%, and the change of the target value is instructed. An air conditioning control signal is transmitted to the air conditioning set value control unit 7. Here, in the case of heating operation, since it is assumed that the outside air temperature is cold during use (for example, winter), air conditioning control is performed to turn off the air conditioner 100 when the room temperature is higher than the target temperature. The signal is included in the signal and transmitted to the air conditioning setting control unit 7 so that the room temperature approaches the target temperature.

  Next, when the sleep state calculation unit 43 transmits a shallow sleep signal in step S <b> 17, the control target value determination unit 6 receives the room information from the indoor state detection unit 5 using each detection signal, and performs the heating operation mode and the shallow operation mode. Based on the condition of sleep signal reception, based on the air conditioning control table (see FIG. 5) held by itself, the target temperature is set to the initial set temperature + 2.0 ° C., the target humidity is set to 40%, and the target value is changed. The instructed air conditioning control signal is transmitted to the air conditioning set value control unit 7. Here, when the room temperature is higher than the target temperature, the fact that the power of the air conditioner 100 is turned off is included in the air conditioning control signal and transmitted to the air conditioning setting control unit 7 so that the room temperature approaches the target temperature.

  Next, in step S18, when the sleep state calculation unit 43 transmits a stable sleep signal, the control target value determination unit 6 receives the room information from the indoor state detection unit 5 by each detection signal, and performs the heating operation mode and the stable operation mode. Based on the condition of sleep signal reception, based on the air conditioning control table (see FIG. 5) held by itself, the target temperature is set to the initial set temperature +2.0, the target humidity is set to 40%, and the target value is changed. The air conditioning control signal to be transmitted is transmitted to the air conditioning set value control unit 7. Here, when the room temperature is higher than the target temperature, the fact that the power of the air conditioner 100 is turned off is included in the air conditioning control signal and transmitted to the air conditioning setting control unit 7 so that the room temperature approaches the target temperature.

  FIG. 9 is a diagram illustrating changes in sleep state from sleep start to wake-up during heating operation and changes in room temperature due to air conditioning control. The change of a biological state and room temperature at the time of performing heating air conditioning by the change of biometric information is shown. In FIG. 9, the solid line is the sleep state of the sleeping person (the sleep is shallower when it is above, the deeper the sleep is when it is below), the broken line is the temperature change in the room (the temperature is higher as it is above), and the alternate long and short dash line is air conditioning The change in the set temperature (the upper is the initial set temperature + 2.0 ° C., the lower is the initial set temperature −1.0 ° C., and the black circle is the power ON / OFF). In addition, the horizontal axis represents elapsed time, and shows changes in sleep depth and temperature changes during overnight sleep. As shown in FIG. 9, the air conditioning control system 1 can change the room temperature in the sleep state in real time, and can obtain a more comfortable sleep. Here, the change in humidity is not shown, but changes in the same manner as the change in temperature.

  As described above, in the present embodiment, in the air conditioning control system 1, the sleep state detection unit 4 detects a change in the biological information of the sleeping person from the acquired biological information, and the control target value determination unit 6 Based on the change in information, the target temperature and the like for air conditioning control of the air conditioner 100 are determined. Thereby, room temperature etc. can be changed in real time with respect to the change of a sleep state of a sleeper, and a sleeper can obtain more comfortable sleep.

  In addition, in this Embodiment, although the sleep state calculation part 43 has output the sleep state signal which shows the present sleep state to the control target value determination part 6 regularly, it is not limited to this. For example, the sleep state calculation unit 43 controls a sleep state change signal indicating a change in the sleep state at a timing when the sleep state (a state where the sleep is shallow, a state where the sleep is deep, or a state where the sleep is changed) changes. You may make it output to the value determination part 6. FIG.

  In the present embodiment, the biometric information storage unit 3 is assumed to be a memory. However, the present invention is not limited to this, and any medium that can store information may be used. For example, an SD card, a USB memory, a hard disk, etc. Good.

  In the present embodiment, the sleep detection unit 42 resets the number of no body movements Ac to 0 when the body movement is detected even at the time of sleep determination, but the present invention is not limited to this. The number of body movements may be accumulated, and it may be determined to fall asleep when a certain value (for example, 50) or more is reached.

  In addition, the change in the biological information is obtained by taking the difference between the number of body movements at that time and the number of body movements immediately before, and counting the number of times that the difference is negative among the past n times (for example, 10 times). Good. In this case, if the number of times that the difference is negative is a certain number or more (for example, 7 times or more), it is a state of shifting to deep sleep, and the number of times that the difference is positive is a certain number or more (for example, 7 times or more). ), It is a state of shifting to shallow sleep, and if neither of the conditions is satisfied, it may be determined that the sleep state is stable.

  In the present embodiment, as an example, the case where the stored biological information is the number of body movements has been described. However, any biological information detected by the biological information acquisition unit 2 may be used. For example, respiratory information, heart rate rhythm, body The surface average temperature and the body surface partial temperature may be used, and a plurality of pieces of biological information may be used.

  Moreover, although this Embodiment demonstrated the case where the air conditioning control system 1 was incorporated in the air conditioner 100, an air conditioning control system may exist in the exterior of an air conditioner. FIG. 10 is a diagram illustrating an indoor installation example of the air conditioning control system according to the present embodiment. Unlike FIG. 2, the air-conditioning control system 1a is installed outside the air conditioner 100a. In this case, as shown in FIG. 11, the air conditioner 100 a includes an air conditioning set value control unit 7 and a control signal transmission / reception unit 8. FIG. 11 is a diagram illustrating a configuration example of the air conditioning control system 1a and the air conditioner 100a. The air conditioning control system 1a is different from the air conditioning control system 1 of FIG. 3 in that it does not include the air conditioning set value control unit 7, but the other configurations are the same, and thus detailed description thereof is omitted. In the air conditioner 100a, the control signal transmission / reception unit 8 is connected to the control target value determination unit 6 in the air conditioning control system 1a. In this case, there is no problem whether the connection method is wired or wireless.

  In the present embodiment, the control of temperature and humidity has been described as an example. However, not only the temperature and humidity but also the control of airflow such as wind direction and air volume can be performed in the same manner.

  In addition, although the case where the air conditioner was controlled based on the sleep stage transition of the sleeper was described, the present invention is not limited to this. It is also possible to control the indoor temperature by applying the control described above to a cooling / heating device such as a fan, a stove, or a heater. Moreover, as shown in FIGS. 10 and 11, an air conditioning control system may be installed outside, and a room temperature or the like may be controlled by combining a plurality of devices.

  In addition, the case where the temperature and humidity in the room are controlled based on the transition of the sleep stage of the sleeper has been described, but the present invention is not limited to this, and other indoor conditions other than the temperature and the like are controlled based on similar control. It is also possible to control. For example, the control described above may be applied to a lighting device, and the brightness of the room may be controlled based on the transition of the sleep stage of the sleeper.

DESCRIPTION OF SYMBOLS 1, 1a Air-conditioning control system 2 Biometric information acquisition part 3 Biometric information memory | storage part 4 Sleep state detection part 41 Sleep sleep flag determination part 411 Sleep sleep flag 42 Sleep sleep detection part 43 Sleep state calculation part 5 Indoor state detection part 51 Indoor temperature detection part 52 Indoor Humidity detection unit 6 Control target value determination unit 7 Air conditioning set value control unit 8 Control signal transmission / reception unit 100, 100a Air conditioner

Claims (15)

An air conditioning control system that performs air conditioning control of an air conditioner,
Biometric information acquisition means for periodically acquiring biometric information of a sleeping person who is a sleeping person;
Biological information storage means for storing the biological information;
A sleep state detection unit that calculates a change in the biological information of the sleeping person based on the biological information stored in the biological information storage unit;
Indoor condition detection means for detecting the indoor condition of the air conditioner of the air conditioner;
Based on the change in the biological information and the indoor state, a control target value of the air conditioner is determined , and even if the sleeping person is in the same sleep state, the state shifts to deep sleep and shifts to shallow sleep. A control target value determining means for setting a control target value different from that of the current state ;
Air conditioning set value control means for controlling the air conditioner based on the control target value;
An air conditioning control system comprising: The biometric information acquisition means is a non-binding sensor that can acquire biometric information of a sleeping person without disturbing the sleeping of the sleeping person.
The air conditioning control system according to claim 1. The biological information includes at least one of sleep, breathing, body movement, heart rate, and body surface temperature.
The air conditioning control system according to claim 1 or 2. The sleep state detection means determines whether or not a sleeper has fallen asleep based on the biological information.
The air conditioning control system according to claim 1, 2, or 3. The sleep state detection means, when the biological information is a body motion, determines that the sleep state has fallen asleep when the number of body motions is a predetermined value or less,
The air conditioning control system according to claim 4. When the biological information is body movement, the sleep state detection means determines that the patient has fallen asleep when the number of body movements is a predetermined number of times or less.
The air conditioning control system according to claim 4. The sleep state detection means indicates a change amount of biological information based on a predetermined number of pieces of biological information including the latest biological information stored in the biological information storage means when a sleeper falls asleep. Calculating a sleep state evaluation index, and transmitting a sleep state signal based on the sleep state evaluation index to the control target value determining means;
The air-conditioning control system according to any one of claims 1 to 6. The sleep state evaluation index is a function value given by the amount of time change with the biological information as a variable,
The air conditioning control system according to claim 7. The indoor state includes at least one of indoor temperature and humidity.
The air conditioning control system according to any one of claims 1 to 8, wherein The control target value determining means determines a control target value of the air conditioner based on the sleep state signal and the indoor state, and determines whether it is necessary to change the control target value of the air conditioner.
The air conditioning control system according to claim 7, 8 or 9. When it is determined that the control target value needs to be changed, the control target value determination means generates an air conditioning control signal for controlling the air conditioner to the changed target value based on the sleep state signal. Output to control means,
The air conditioning control system according to claim 10. When the control target value determining means determines that it is not necessary to change the target value, it does not output an air conditioning control signal for controlling the air conditioner to the target value after the change to the air conditioning set value control means,
The air conditioning control system according to claim 10 or 11, wherein The control target value determining means includes an air conditioning control table that stores a control target value corresponding to the current operation mode and sleep state signal of the air conditioner.
The air conditioning control system according to claim 10, 11 or 12. The air conditioning control signal includes at least one of set temperature, set humidity, wind direction, air volume, and wind speed.
The air conditioning control system according to claim 11 or 13, characterized in that The air conditioning set value control means receives the air conditioning control signal and performs air conditioning control of the air conditioner.
The air conditioning control system according to claim 11, 13 or 14.

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