JP3491350B2 - Bedtime equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention determines the movement of a sleeping person in bed when he or she is asleep in a facility such as a hospital or a nursing home or at home, and informs a third person if any abnormality occurs. The present invention relates to a sleeping device.

[0002]

2. Description of the Related Art In Japan, it is predicted that the aging of the population will progress in the near future, and improvement of welfare facilities for the elderly and measures for the elderly at home are becoming a social problem. Conventionally, at home, when an elderly person has a sudden seizure or sudden illness, a pendant-type emergency button or the like is used to notify the third party of the situation, and the neighborhood is connected via a telephone line. The so-called emergency call system was used to notify people and local public bodies. In addition, in the case of facilities such as hospitals and nursing homes, there has conventionally been a nurse call button that is notified from the bed to a nurse center or a management room.

[0003]

However, in the above-described conventional method, it is not possible to notify the elderly person when he / she is in an emergency in which he / she cannot press even the button. In addition, the pendant type emergency button is not always carried by an old man, and in an emergency such as a stroke, it may not be possible to go to the place where the emergency button is placed. Further, there is also a problem that the emergency button is erroneously pressed even though it is not always in an emergency state, and a false alarm is notified. On the other hand, recently, there are also reports that elderly people frequently fall into emergency situations while in bed.

The present invention solves the above-mentioned problems, focusing on the sleeping behavior of the elderly, detecting the movement of the body (hereinafter referred to as body movement) or the stop of body movement at an abnormal time or an abnormal duration, and If the result is judged and it is judged to be abnormal, the purpose is to notify the third party automatically of an emergency and to prevent the above-mentioned false alarm.

[0005]

In order to achieve the above-mentioned object, the present invention is installed in a bedding and moves the limbs of a sleeping person .
And body movement detecting means for detecting body movements of the body such as heartbeat and respiration, signal processing means for processing the signal obtained from the body movement detecting means, and body processing based on the processing result obtained from the signal processing means. A calculating means for calculating the amount of body movement, a timer for measuring the time when the body movement is generated and the duration of the body movement on the basis of the output of the calculating means, the normal time when the sleeping person comes up and wakes up, and the abnormal body Motion duration, abnormal body motion duration , bed leaving abnormality, and other biological information storage means for storing criteria for abnormal conditions, and the amount of body movement, the timer measurement result, and the biological information storage means. A judging means for judging abnormality by comparing the obtained information and a notifying means for notifying the judgment result are provided.

[0006]

According to the present invention, the body movement detecting means installed in the bedding detects the presence or absence of body movement of the sleeping person and the size of the sleeping person. The signal obtained from the body movement detecting means is subjected to signal processing such as filtering, amplification, rectification, integration and AD conversion by the signal processing means. The processing result is calculated as the amount of body movement by the calculation means. On the other hand, the time when these body movements occur and the duration of the presence or absence of body movements are measured by a timer.
The determination means compares the amount of body movement, the time measurement result of the timer, and the information stored in the biological information storage means to determine whether or not there is an abnormal state in the sleeping person. Then, if it is determined that there is an abnormality, the notification means notifies the third party of the result.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a bed installed in a hospital room, a nursing home, or other facility, or in a bedroom of a general household, and a body movement detecting means 4 is provided in a bed pad 3 on the mattress 2. ing. When the sleeping person 5 lies on the bed 1, the body movement detecting means 4 is evenly attached to the bed pad 3 so that the body movement detecting means 4 can detect the body movement of each part of the patient's body. The body movement detecting means 4 is connected to a control box 6 as a signal processing means. After the signal processing is performed in the control box 6, the amount of body movement is calculated, the abnormal state of the sleeping person 5 is determined, and the results are notified. , For general households 8
Connected to a computer (not shown) installed in the computer. Reference numeral 9 is a nurse call button that the sleeping person 5 reports by his / her will.

Next, the structures of the body movement detecting means 4 and the control box 6 will be described with reference to FIG. In the figure, reference numeral 4 denotes a body movement detecting means using a piezoelectric element, which is polyvinylidene fluoride (PV).
A polymer piezoelectric material such as DF) is formed into a thin film, and a flexible electrode film is attached to both surfaces of the thin film to form a tape, which is sewn to the bed pad 3. Control box 6
Is a low-pass filter 10, an amplifier 11, an integrator 12, which passes only a low frequency component of 4 to 5 Hz generated by body movement in response to the body movement signal from the body movement detecting means 4.
It has an AD converter 13. Control box 6 including these
The result of the signal processed in (3) is displayed on a personal computer 19 having a computing means 13, a timer 14, a judging means 15, an informing means 16, a biological information storage means 17, and a storage means 18. still,
In the present embodiment, the control box 6 and the personal computer 19 are connected to each other by wire, but a transmitter / receiver (not shown) may be provided for both of them to perform wireless communication. In that case, in a facility or the like, it becomes easy to manage a plurality of places in a management room or the like.

In the above-mentioned structure, when the sleeping person 5 is present on the bed 1, the body movement detecting means 4 is deformed by body movements such as the movements of the limbs of the human body and rolling and heartbeat / breathing, and the minuteness due to the piezoelectric effect. Voltage is generated. Then, only a predetermined frequency component of the generated voltage output passes through the low-pass filter 10 in the control box 6, and the amplifier 11
After being amplified by, the signal is integrated by the integrator 12 and AD-converted by the AD converter 13.

An example of the output signal after passing through the integrator 12 is shown in FIG. As shown in FIG. 3A, when the sleeping person 5 enters the bed 1, leaves the bed, or makes a large body movement that causes struggle, a large output is generated in the body movement detecting means 4. Further, in the resting state, as shown in (B), a low level output based on the heartbeat and respiration of the human body continues. Furthermore, in the case of body movements such as limb movements, (C)
As shown in, the output of the level according to the magnitude of the movement is obtained. When the sleeping person 5 is not present in the bed 1 or when heartbeat / breathing is stopped, the signal output from the body movement detecting means 4 becomes 0, as shown in (D). And these body movement signals are AD
It is converted into a digital amount by the converter 13, and is calculated as a body movement amount by the calculating means 13. At this time, if a plurality of threshold values such as Va, Vb, and Vc are set to the values corresponding to the respective body movements, the sleeping person 5 on the bed 1
It is possible to detect the rough state of.

The above-mentioned body movement patterns and the times and durations at which these body movement patterns occur are measured by a timer 14 and used as current information, and the known information of the sleeping person 5 inputted in advance is compared with the judging means 15. If there is a difference, it is determined to be abnormal. If an abnormal condition occurs, the notification means 16 such as a display and a buzzer built in the personal computer 19 can notify the third party.

[0013]

[Table 1]

That is, as shown in (Table 1), in the facility or the general household, the entry abnormality is detected in advance by the biological information storage means 17
When the judgment means 15 detects that there is a difference between the normal bedtime and the current time that are input to the threshold value, the threshold value of the signal from the body movement detecting means 4 exceeds the value of Vc, and the phenomenon of bed entry is seen. Is. In this case, it is possible to detect an abnormality that the sleeping person "gets to the floor earlier than usual." Further, the wake-up abnormality has a difference between the normal wake-up time previously input to the biological information storage means 17 and the current time, and the threshold value of the signal from the body movement detecting means 4 exceeds the value of Vb or Vc, and the wake-up phenomenon occurs. This is when the determination means 15 detects that the image cannot be seen. This case is an example such as "unusually awakening time is abnormally delayed." Conversely when the threshold of the signal from the body motion detecting means 4 to bedtime after is not observed phenomenon of the incoming floor below Va is detected by the determination unit 15 is away bed abnormal, only the "off time For example, "do not enter the bed", "do not enter after midnight".

Further, during sleep at night, etc., the resting state generally continues to some extent, and sometimes body movement occurs. Therefore, the body movement detecting means 4 keeps a signal of about Va, and Vb, Vc.
It is common for signals that exceed 10 to occur frequently. However, the body movement abnormality is when the determination means 15 detects a signal exceeding Vc for the duration of the body movement input to the biological information storage means 17 or more. In this case, sleeper 5 is in bed 1
It is an anomaly like "suffering" on the top. On the other hand, when the signal of Va or less continues for the duration of the inanimate motion input to the biological information storage means 17 or more, the inanimate motion is abnormal. In this case, "heartbeat / breathing is stopped", "go to the toilet" It is possible to find anomalies such as "I will not return as it is".

Since these abnormalities differ in what is judged as abnormal in each facility or home, the personal computer 19
In the above, the above-mentioned abnormal time, abnormal continuation time, threshold value, etc. can be freely set according to each case. In addition, storing the above-described record of body movements in the storage means 18 in the personal computer 19 is useful for determining a long-term tendency and the like.

[0017]

As is apparent from the above description, according to the sleeping apparatus of the present invention, the following effects can be obtained.

[0018] calculating means for detecting the body motion of the body <br/> body such as motion rolling over and heart and respiratory of the human limb by the installed body motion detecting means in bed pads, calculates the amount of body movement has a tie <br/> Ma for measuring the duration of time and the body movement body movement occurs, determine the motion amount and the motion occurrence time and the body movement duration
Since the abnormal state is determined by comparison with a fixed standard, it is possible to automatically detect a wide range of abnormalities in the daily living state of the sleeping person, which contributes to labor saving of nursing care and nursing. Further, since the determination means can set a plurality of threshold values, it is possible to perform abnormality determination according to the situation of the facility or the home.

Further, since the calculation means has a storage means for storing the calculation result, a long-term tendency can be seen.

[Brief description of drawings]

FIG. 1 is an external perspective view of a sleeping apparatus according to an embodiment of the present invention.

FIG. 2 is a control block diagram of the device.

FIG. 3 is an output waveform diagram from the integrator of the signal processing means in the device.

[Explanation of symbols]

1 bed 2 mattress 3 bed pads 4 Body movement detection means 6 control box

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takuo Shimada 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Miyuki Yamauchi 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-28344 (JP, A) JP-A-4-22334 (JP, A) JP-A-61-279221 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 5/00

Claims (5)

(57) [Claims] 1. The movement of the limbs of the sleeping person, which is installed in the bedding and turns over.
Body movement detecting means for detecting body movements of the body such as heartbeat and respiration, signal processing means for processing the signal obtained from the body movement detecting means, and the body obtained from the processing result obtained by the signal processing means. Calculating means for calculating the amount of body movement, a timer for measuring the time at which the body movement has occurred and the duration of the body movement based on the output of the calculating means, and normal sleep and waking of the sleeping person. > Floor time, abnormal body movement duration, abnormal body movement duration , leaving bed
A biometric information storage means for storing a criterion for abnormal conditions such as abnormal, a determination unit configured to determine abnormality by comparing the body movement amount and timing result and the biometric information data stored in the storage means of the timer, A sleeping device comprising an informing unit for informing the determination result. 2. The biometric information storage means is a normal bedtime for a sleeping person.
2. The sleeping apparatus according to claim 1, wherein the determination reference for an abnormal state such as a wake-up time, abnormal body movement duration, abnormal body movement duration, and bed leaving abnormality can be set. 3. The sleeping apparatus according to claim 1, wherein the calculation means can set a threshold value of the amount of body movement. 4. The sleeping apparatus according to claim 1, further comprising a storage unit that stores the calculation result. 5. The sleeping apparatus according to claim 1, wherein the signal processing means includes a wireless transmission means.