JPH0674525A - Detector for sleepiness and sleeping - Google Patents

Abstract

PURPOSE:To provide a detector of sleepiness and sleeping by which the sleepiness and sleeping can be correctly detected and the trouble and uncomfortableness of an equipment such as a sensor are eliminated. CONSTITUTION:A sensor body 1 having a plurality of skin temperature sensors 6 2 attached equally on a sheet is provided at its feet of a bed, so that the particular change information of skin temperature during sleeping is obtained based on signals from the skin temperature sensors 2. In the meantime, the movement of the body is determined from the skin temperature signals. Then, sleepiness and sleeping are determined based on the temperature change information and the body movement information. Accordingly, problems such as uneasiness and uncomfortableness due to the attachment of the sensor can be solved and the sleepiness and sleeping can be safely and correctly detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleep detection device for detecting drowsiness and falling asleep of a human body, which is used for realizing a comfortable sleep.

[0002]

2. Description of the Related Art As a conventional sleeping apparatus (a device for detecting sleep etc.), for example, as disclosed in Japanese Patent Application Laid-Open No. 63-102192, a change is remarkable when a sleep state shifts to an awake state. Detects a certain skin temperature with a skin temperature sensor attached to the surface of the human body, and judges entering and waking up,
Alternatively, as disclosed in Japanese Utility Model Publication No. 56-1103, a pressure sensor is provided in a bedding having a heater to detect a body movement to determine whether the person enters the bed or wakes up, or JP-A-3-272745. As disclosed in the publication,
A method for determining an arousal level by extracting respiratory fluctuations or blood pressure fluctuations of the heart, or Japanese Patent Laid-Open No. 3-1
As disclosed in Japanese Patent No. 51938, various methods are known, such as a method of determining the arousal level by detecting the skin potential of the human body.

[0003]

However, in such a conventional sleep (wakefulness) detection method, it is necessary to directly attach a sensor or the like to a human body in order to detect sleep (wakefulness). Discomfort, discomfort, and the like, especially with regard to detection of sleep, wears a sensor to cause discomfort, which is a great disadvantage for a comfortable sleeping environment. In addition, in the detection of body movement by the pressure sensor, when a futon or something having a certain weight gets on the sensor,
This may be mistaken for body movement.

In consideration of the problems of the conventional sleep (wakefulness) detection method, the present invention makes it possible to accurately detect sleep and drowsiness without disturbing a comfortable sleeping environment. It is intended to provide.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a human body temperature detecting means for detecting a human body temperature without being worn on a human body, and sleep and drowsiness of the human body are detected by the temperature detected by the human body temperature detecting means. Drowsiness and sleep detection device including a detection unit that operates.

Further, the human body temperature detecting means is a drowsiness and sleep detecting device which is in the form of a sheet and which can be attached to a futon.

According to the present invention, the human body temperature detecting means is evenly arranged on the sheet member and the sheet member.
A contact part having a plurality of skin temperature sensors for detecting the skin surface temperature, and using the output of the skin temperature sensors, a contact part for determining a part of the plurality of skin temperature sensors that is in contact with a human body. It further comprises a judgment comparing means and a body movement detecting means for judging the body movement of the human body based on the judged contact portion, and the detecting section detects sleep and drowsiness in consideration of the judged body movement. A certain drowsiness and sleep detection device.

[0008]

As shown in FIG. 1, the human body normally detects sleepiness by detecting changes in skin temperature with an accuracy of 1/100, since the temperature of the terminal parts of the body such as limbs rises when it becomes drowsy. In addition, sleep can be judged because the movement of the body decreases when falling asleep.

That is, according to the present invention, the human body temperature detecting means not attached to the human body detects the human body temperature, and the detecting section detects sleep or drowsiness of the human body based on the temperature detected by the human body temperature detecting means. .

Further, the sheet-like human body temperature detecting means is used by attaching it to a futon or adhering it.

Further, it is arranged evenly on the sheet member, and based on the output signals from a plurality of skin temperature sensors for detecting the skin surface temperature, the part in contact with the human body is judged, and thereby the body movement of the human body is judged. , Sleep and drowsiness are determined by the temperature information and body movement information of the human body.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a block diagram for explaining a circuit of a drowsiness and sleep detection device according to an embodiment of the present invention.
FIG. 4 is a sketch drawing (a) and an installation example (a) of the drowsiness and sleep detection device.

As shown in FIG. 4, the sensor body 1 is evenly mounted on the sheet cloth, and has a large number of skin temperature sensors 2 for detecting the temperature, and signals from the skin temperature sensors 2 relating to their positions. It is provided with a transmitting unit 4 such as an antenna that transmits together with information. The skin temperature sensor 2 is attached to an area occupying most of the center of the sheet cloth, and the living body temperature sensor 5 for detecting the temperature of the human body and the left and right end portions of the sheet cloth are attached. And a futon end temperature sensor 6 for detecting the temperature of the futon end. In order to prevent the body from coming into contact with the futon end temperature sensor 6 when measuring the temperature of the futon end, it is desirable to provide leg leg folds 14 as shown in FIG.
As shown in FIG. 2, each of the sensors 5 and 6 is composed of a thermocouple, and the tip end portion is processed into a plate shape and fixed to a thermocouple fixing tool, so that discomfort and foreign body sensation can be given at the time of body contact. There is no such thing.

The arithmetic unit 3 is a device for receiving and processing the signals of the information relating to the skin temperature and the information relating to the position transmitted from the transmitting unit 4. The calculation unit 3 includes a reception unit 7 such as an antenna that receives the signal transmitted from the transmission unit 4, and a skin temperature calculation unit 8 that calculates the skin temperature by calculating the received signal.
A drowsiness determination and comparison unit 11 that determines drowsiness from the detected temperature of the body end, a sleep detection unit 12 that detects sleep onset from the detected temperature of the body end, a signal of the calculated skin temperature, and the position Body contact position signal 1 based on the information
3, a contact part determination / comparison circuit 9, a body motion detection means 10 for detecting body motion by movement of the body contact part determined by the contact part determination / comparison circuit 9, the detected body motion information, and the sleep. The sleep detection unit 15 detects sleep based on the sleep information from the detection unit 12.

The operation of the drowsiness and sleep detection device configured as described above will be described with reference to FIG.

First, the sheet cloth of the sensor body 1 is attached to a place of the bedding mattress on which the legs of the human body are placed by using a string, a magic fastener or the like. Then, when a person enters the futon to sleep, signals are output from the transmission unit 4 from the plurality of skin temperature sensors 2 arranged in the installed sheet-shaped sensor body 1. The reception unit 7 of the calculation unit 2 receives the signal and the skin temperature calculation unit 8 starts calculation.

That is, the average of the temperatures (Th1 to Thi) of the futon end temperature sensor 6 and all skin temperatures from the living body temperature sensor 5 are individually compared. The temperature of the part that the body is touching is Tb1 to Tbk, and the temperature of the part that is not touching is Tf1 to Tb
When fm, the temperatures of Tb1 to Tbk correspond to the rhythm of the body, but Tf1 to Tfm change corresponding to Th1 to Thi. Therefore, in the contact portion determination / comparison circuit 9, all the skin temperatures output from the skin temperature calculation unit 8 are differentiated and the rate of change thereof is sequentially obtained, and each is compared with the pattern of the rate of change of Th1 to Thi, The part in contact with the body is determined by sorting the non-corresponding ones and the corresponding ones. The signal 13 indicating the position of the part in contact with the body is sent to the body movement detecting means 10 and Tb1 to Tbk.
Is output to the drowsiness determination and comparison unit 11. Drowsiness judgment comparison unit 1
From the change, the skin temperature output to 1 detects the progress of drowsiness as a drowsiness degree and outputs it. In addition, the sleep detection unit 12 that detects falling asleep predicts a curve during sleep from the obtained change rate, and outputs 1 when sleeping and 0 when awake. On the other hand, the body movement detecting means 10 determines the movement of the body by the movement of the signal indicating the position of the body contact portion input from the contact portion determination / comparison circuit 9, and when the person falls asleep, the body movement decreases, so that it is determined that the person is asleep and sleep It outputs 1 if it is time and 0 when it is awake. Therefore, the sleep onset detection unit 15 compares the 1 or 0 signal input from the body movement detecting unit 10 with the 1 or 0 signal input from the sleep detection unit 12, and the AND circuit determines that both are 1 In this case, it is determined that the person has fallen asleep and outputs a sleep fall signal to the outside. As described above, more accurate sleep can be detected by determining sleep based on both the change in skin temperature as shown in FIG. 1 and the decrease in body movement.

The drowsiness and sleep detection device as described above is installed, for example, in a baby's bedding, connected to bed Mary, etc., and a drowsiness degree detection signal is used to control a volume and a sleep detection signal is used to control a switch. , It can be used to promote the restful sleep of infants.

The skin temperature sensor of the present invention does not necessarily have to be composed of the living body temperature sensor and the futon end temperature sensor as in the above-mentioned embodiment. By detecting the difference between the output of the sensor of the part and the output of the sensor in contact,
It is also possible to determine the position of the body.

[0021]

As is apparent from the above description,
Since the human body temperature detecting means is not attached to the human body, the present invention has an advantage that there is no problem such as discomfort and discomfort caused by wearing, unlike the conventional skin temperature sensor.

Further, by utilizing the body movement detecting means,
When detecting sleep and drowsiness, there is an advantage that sleep and drowsiness can be detected more accurately.

[Brief description of drawings]

FIG. 1 is a graph showing changes in skin temperature due to sleep.

FIG. 2 is a schematic view of a skin temperature sensor (1 unit) which is a part of the drowsiness and sleep detection device according to one embodiment of the present invention (a).
Is a sectional view (a).

FIG. 3 is a block diagram for explaining a circuit of a drowsiness and sleep detection device according to an exemplary embodiment of the present invention.

FIG. 4 is a sketch drawing (a) and an installation example drawing (a) of a drowsiness and sleep detection device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Sensor Main Body 2 Skin Temperature Sensor 3 Computing Unit 5 Living Body Temperature Sensor 6 Futon Edge Temperature Sensor 7 Receiver 8 Skin Temperature Calculator 9 Contact Judgment Comparison Circuit 10 Body Movement Detection Means 11 Sleepiness Judgment Comparison Part 12 Sleep Detection Part 15 Sleeping Detection unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Inoue 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Within Seiko Co., Ltd.

Claims (3)

[Claims] 1. A human body temperature detecting means for detecting a human body temperature without being attached to a human body, and a detecting section for detecting sleep or drowsiness of the human body based on the temperature detected by the human body temperature detecting means. A drowsiness and sleep detection device characterized by: 2. The drowsiness and sleep detection device according to claim 1, wherein the human body temperature detection means is in the form of a sheet and can be attached to a futon. 3. The human body temperature detecting means has a sheet member and a plurality of skin temperature sensors that are evenly arranged on the sheet member to detect the skin surface temperature. The output of the skin temperature sensor is used. In the plurality of skin temperature sensors, a contact portion judgment comparing means for judging a portion in contact with a human body, and a body movement detecting means for judging a body movement of a human body according to the judged contact portion, The detection unit,
The drowsiness and sleep detection device according to claim 1, wherein sleep and drowsiness are detected in consideration of the determined body movement.