JPH05159173A - Sleeping equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To detect smoke when the sleeping person is asleep and provide a safe indoor environment. [Structure] A smoke detector 12 installed indoors, a body movement detecting means 6 for detecting body movement of a sleeping person provided in bedding, and a floor presence detecting a presence of a bed by a signal from the body movement detecting means 6. A determination means 9 and a sleep onset determination means 10 for detecting sleep onset are provided. Further, a control means 11 for controlling the smoke detector 12 to operate according to a signal from the sleep onset determination means 10 is provided. This ensures that the safety of the indoor environment is ensured by operating the notification means such as an alarm via the smoke detector 12 only when sleep detection is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeping apparatus for detecting smoke in a room when sleeping.

[0002]

2. Description of the Related Art A conventional sleeping apparatus of this type is provided with a smoke detector on the ceiling or wall of a bedroom to detect smoke generated indoors.

Regarding the environment control device during sleep,
As shown in FIG. 6, it is composed of a detection unit 2, a signal processing unit 3, a sleep time setting unit 4, and a sleep environment control unit 5 which are installed on the arm or head of the sleeping person 1.

The detecting unit 2 detects the physical condition of the sleeping person 1, and the signal thereof is input to the signal processing unit 3.
In addition, the signal processing unit 3 receives the output thereof because the sleeping person 1 sets the sleep time by the sleep time setting unit 4 before sleeping. The signal processing unit 3 performs signal processing with the input signals of the detection signal and the setting signal, and the sleeping environment control unit 5 controls the environment of the bedroom (for example, Japanese Patent Laid-Open No. 55-101270).

[0005]

However, the above-mentioned conventional configuration has a problem that when the person in the room is not sleeping, the smoke detector detects cigarette smoke and causes a malfunction. Further, even if the smoke detector is operated by the timer, the occupant in the room is not always sleeping at that time, and there is a possibility of malfunction.

In the sleep environment control device,
In order to detect the physical state of the sleeping person 1, the detector 2 must be attached to the arm or the head of the sleeping person 1. Therefore,
There was a problem of disturbing the sleep of the sleeper 1.

The present invention solves the above-mentioned problems, and detects sleep without operating a detector or the like directly on the body of a sleeping person and operates a smoke detector installed indoors appropriately. It was intended.

[0008]

In order to achieve the above object, the present invention provides a smoke detector installed in a room and a body motion detection provided in a bedding used in the room to detect a body motion of a sleeping person. Means, a bed presence determination means for detecting bed presence by a signal from the body movement detection means and a sleep onset determination means for detecting sleep onset, and a control means for controlling the smoke detector by a signal from the sleep onset determination means. Is provided.

[0009]

According to the present invention, the body movement detecting means detects the body movement of the sleeping person, the bed presence determining means detects the presence of the bed based on the signal from the body movement detecting means, and then the sleep onset determining means. When the person detects falling asleep, the output signal is sent to the control means to operate the smoke detector, and then the notification means such as an alarm is operated.

[0010]

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

In FIG. 1 and FIG. 2, 6 is a body motion detecting means provided on the mattress 8 of the bed 7 and is connected to the presence determination means 9. The bed determination means 9 is further connected to the sleep onset determination means 10. The signal from the sleep onset determination means 10 is sent to the control means 11 to control the smoke detector 12.

Next, the configurations of the bed presence determination means 9 and the sleep onset determination means 10 will be described with reference to FIG. In the figure, reference numeral 6 is a body movement detecting means using a piezoelectric element, and a polymeric piezoelectric material such as polyvinylidene fluoride (PVDF) is formed into a thin film, and a flexible electrode film is adhered on both sides, and formed into a tape. It is a thing. The in-bed determination means 9 includes a low-pass filter 13, an amplifier 14, a rectifier 15, an integrator 16, and a first comparator 17. A sleep onset determination unit 10 is connected to the bed presence determination unit 9 and includes a timer 18 and a second comparator 19.

In the above structure, when a human body is present on the mattress 8, the body movement detecting means 6 is deformed by the body movement of the human body on the mattress 8, such as heartbeat, respiration and turning over, and the voltage due to the piezoelectric effect is generated. Occur. Then, only a predetermined frequency component of the generated voltage output passes through the low pass filter 13, is amplified and rectified, and then integrated by the integrator 16. The output signal of the integrator 16 in an actual scene is shown in FIG. As shown in the figure, there is a large output when there is a rough body movement such as getting in and out of bed or rolling over, and when the person is in bed and is in a resting state, the level may be reduced due to the heartbeat of the human body or a slight movement caused by breathing. A low output is obtained, and the output becomes zero when the user is out of bed. That is, as long as the human body is present on the mattress 8 at bedtime, a low level output is obtained due to at least the above-mentioned minute body movements associated with the heartbeat and breathing of the human body. Utilizing this fact, the first comparator 17 determines that the in-bed state is present if the output signal of the integrator 16 is within the range between Va and Vb shown in FIG. Although there are individual differences in the minute body movements associated with the heartbeat and respiration of the human body as described above, Va and Vb can be obtained by subject experiments or the like.

Next, the inventors examined the relationship between the above-mentioned coarse body movement and sleep state. That is, based on the finding that coarse body movement disappears when falling asleep, a state in which coarse body movement does not occur in a sleep experiment (hereinafter, referred to as “coarse body movement rest state”)
The relationship between the duration of the sleep and the probability that the sleeping person is in the sleep state in that state was obtained. The result is shown in FIG. In the figure, the horizontal axis represents the duration of the coarse body motion resting state, and the left vertical axis represents the probability that the subject is in the sleep state when the coarse body motion resting state continues for T time. Further, in the sleep state, the coarse body motion rest state continues and the sleep state shifts to the deep wave sleep, ie, the slow wave sleep. However, at a certain point, the coarse body movement occurs again and the slow wave sleep ends. Therefore, the vertical axis on the right side of the figure shows the probability that coarse body movement occurs and slow-wave sleep ends when the coarse body movement resting state continues for T time. As is clear from FIG. 5, for example, if the state of static body motion resting continues for 15 minutes, there is a probability of about 85% falling asleep, and a probability of about 10% ending slow wave sleep. By measuring the duration of static motion, it was possible to determine sleep onset at a level sufficient for practical use. That is, in the sleep onset determination means 10, when the first comparator 17 outputs, the timer 18 performs the time counting operation, and when there is no output, the timer 18 stops and resets the time counting operation. And
The second comparator 19 determines that the person is in a sleep state when the time measured by the timer 18 becomes a predetermined time or more. Here, as the value of the predetermined time, about 15 minutes is appropriate from the above experimental result.

Since the body movement detecting means 6 is a thin film and has flexibility, it can be attached to bedding, and a detector or the like is not attached to the body of a sleeping person so as not to disturb natural sleep. At bedtime, in-bed determination means 9 in FIG. 1 performs in-bed detection, and only when in-sleep determination means 10 in-sleep detection is performed, in-sleep determination means 13 generates a signal. Is sent to the control means 11 and a notification means such as an alarm is operated via the smoke detector. Therefore, according to the configuration of this embodiment, there is an effect that smoke detection can be performed at the time of sleep detection.

[0016]

As described above, since the sleeping apparatus of the present invention uses the thin film-like flexible body movement detecting means,
There is an effect that smoke detection during sleep can be performed without disturbing the sleeper's natural sleep.

[Brief description of drawings]

FIG. 1 is a control block diagram of a sleeping apparatus according to an embodiment of the present invention.

FIG. 2 is an external perspective view showing a state in which body movement detection means, bed presence determination means, and sleep onset determination means are provided in the bedding of the same apparatus.

FIG. 3 is a control block diagram showing the relationship between the body movement detecting means, the bed presence determining means, and the sleep onset determining means of the device.

FIG. 4 is an output waveform diagram from the integrator of the in-bed determination means in the device.

FIG. 5 is a characteristic diagram showing the relationship between the duration of the stationary state of coarse body motion of the device and the probability of being in a sleep state.

FIG. 6 is a control block diagram of a conventional sleeping apparatus.

[Explanation of symbols]

 6 Body Motion Detecting Means 9 In-Floor Determining Means 10 Sleep-Determining Means 11 Control Means 12 Smoke Detectors

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location G04C 21/00 7809-2F 23/00 Z 7809-2F

Claims (1)

[Claims] 1. A smoke detector installed in a room, a body motion detecting means for detecting a body motion of a sleeping person, which is provided in a bedclothes used in the room, and an in-bed by a signal from the body motion detecting means. A sleeping apparatus comprising: a bed presence determining unit that detects a sleep state; a sleep onset determining unit that detects sleep onset; and a control unit that controls the smoke detector based on a signal from the sleep onset determining unit.