JPH04309365A - Sleeping device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeping device that controls lighting means when a user falls asleep.

0002

2. Description of the Related Art A conventional sleeping device includes a sleep detection means 13, a power cutoff means 14, and a controlled means 15, as shown in FIG.
It is composed of When the sleep detection means 13 detects that the user has fallen asleep, it outputs a detection signal to the power cutoff means 14, and the power cutoff means 14 promptly turns off the controlled means 15. When the controlled means 15 is, for example, lighting means such as a downlight or a stand light, the lighting is turned off when it is detected that the user has fallen asleep.

0003

However, in the above-mentioned conventional configuration, when a person falls asleep, the power to the controlled means is immediately turned off, and the amount of light instantly becomes zero. Users immediately after falling asleep tend to return to an alert state due to changes in the external environment, so
Sudden changes in the amount of light can actually interfere with your sleep.

[0004] The present invention solves the above problem, and its purpose is to detect when a user goes to bed and continuously attenuate the light intensity of the lighting means, thereby ensuring a sound sleep for the user immediately after falling asleep. This turns off the lighting means.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides lighting means that is installed in a bedroom and whose light amount is adjustable;
A biological information acquisition means for detecting body movements of a user using the bedroom, a detection means for receiving a biological signal from the biological information acquisition means to detect sleep onset of the user and outputting a detection signal, and a detection means for receiving the detection signal. The apparatus is provided with a control means for outputting a light amount control code for attenuating the light amount of the illumination means, and a transmission means for transmitting the light amount control code outputted from the control means to the illumination means.

[0006]

[Operation] With the above configuration, the present invention acquires biometric information such as the user's body movements by the biometric information acquisition means and outputs it as a biosignal. The detection means receives the biological signal, detects that the user has fallen asleep, and simultaneously outputs a detection signal. Further, upon receiving the detection signal, the control means outputs a light amount control code for attenuating the light amount a necessary number of times until the output level reaches 0, and then outputs an off code. The transmitting means transmits the light amount control code and the off code output from the control means to the illumination means. The illumination means receives a light amount control code to continuously attenuate the light amount, and receives an off code to turn off the light.

[0007]

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 1 denotes biometric information acquisition means, on which the user is placed when sleeping. This may be attached to the futon or bed that the user normally uses when sleeping. The detection means 2 is connected to the biological information acquisition means 1 and the control means 3. The control means 3 is connected to a transmitting means 4, and the transmitting means 4 communicates with the illuminating means 5 by wire or wirelessly. As the control means 3, a line constituted by a programmable microcomputer or the like can be used. Further, when the communication of the illumination means 5 is wireless, the transmitting means 4 may be an infrared emitting device used in a remote control or the like.

Next, the configuration of the detection means 2 will be explained using FIG. 2. In the figure, 2 is a detection means, which includes a filter section 6, an amplification section 7, a rectification section 8, an integration section 9, a comparison section 10, and a timer section 1.
1 and a determining section 12. The biological information acquisition means 1 uses a piezoelectric element to obtain polyvinylidene fluoride (
A thin film made of a polymeric piezoelectric material such as PVDF (PVDF) and flexible electrode films attached to both sides is formed into a tape shape.

In the above configuration, when a human body is present on the biological information acquisition means 1, the biological information acquisition means 1 is deformed by the human body's heartbeat, breathing, body movements such as turning over, and generates a voltage due to the piezoelectric effect. do. Only a predetermined frequency component of the generated voltage output is passed through the filter section 6, amplified and rectified, and then integrated by the integrating section 9. FIG. 3 shows the output signal of the integrating section 9 in an actual situation. As shown in the figure, there is a large output when gross body movements occur, such as entering or leaving the bed, turning over, etc., while when the person is in bed and at rest, the level is low due to minute body movements associated with the human body's heartbeat and breathing. Output is obtained, and when the patient leaves the bed, the output becomes zero. That is, as long as a human body is present on the bed during sleep, a low-level output can be obtained at least due to minute body movements associated with the human body's heartbeat and breathing as described above. Utilizing this fact, the comparator 10 converts the output signal of the integrator 9 to V shown in FIG.
If it is within the range of a and Vb, it is determined that there is a bed and outputs a high level, otherwise it outputs a low level. Although there are individual differences in the human body's minute movements associated with heartbeat and breathing as described above, Va and Vb can be determined through experiments on human subjects. The timer section 11 operates to measure time if the output signal of the comparison section 10 is at a high level. Here, the inventors investigated the relationship between body movements such as turning over in bed and sleep state through sleep experiments, and found that there is a high probability of falling asleep if there is no body movement for about 15 minutes or more. Obtained. As a result, the determination unit 12 determines that the sleeper on the bed has fallen asleep if the time measured by the timer unit 11 exceeds a certain set value, for example 15 minutes, and the output signal becomes high level. Barrow level.

[0010] When it is detected that the user has fallen asleep as described above, the control means 3 outputs a light amount control code for attenuating the light amount as many times as necessary. The transmitting means 4 performs one transmission for each output of the light amount control code. The illumination means 5 changes the amount of light by a predetermined amount in response to one reception of the light amount control code. The illumination means can ultimately reduce the amount of light to zero. FIG. 4 shows temporal changes in the amount of light.

Note that the rate of attenuation depends on the number of outputs of the light amount control code from the control means 3 per unit time. If you want a gradual change, you can reduce the number of times the light intensity control code is output per unit time, and if you want a sudden change, you can increase it. This can be realized by a program built into the control means 3.

After the amount of light becomes zero, an off code for turning off the illumination means 5 is output. The transmitting means 4 also transmits this off code to the illuminating means 5, and the illuminating means 5 turns off the illumination.

[0013] Due to the above action, when the user falls asleep, the light intensity of the lighting means is continuously attenuated, and the light intensity level is reduced to zero without impairing the user's restful sleep immediately after falling asleep, and the operation of the lighting means is turned off. can be done.

[0014]

Effects of the Invention As explained above, according to the sleeping device of the present invention, it is possible to detect the user's falling asleep and continuously attenuate the light intensity level from the lighting means. It has the effect of not impairing your sleep.

[Brief explanation of drawings]

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

[Figure 2] Block diagram of the detection means of the sleeping device

[Figure 3] Output waveform diagram from the integrating section of the detection means of the sleeping device

[Fig. 4] Explanatory diagram showing temporal changes in light intensity of the sleeping device

[Figure 5] Block diagram of a conventional sleeping device

[Explanation of symbols]

1. Biometric information acquisition means 2 Detection means 3 Control means 4 Transmission means 5. Illumination means

Claims (1)

[Claims] 1. Lighting means provided in a bedroom whose light intensity can be adjusted; biological information acquisition means for detecting biological information such as body movements of a user using the bedroom; and biological signals from the biological information acquisition means. a detection means for detecting that the user has fallen asleep and outputting a detection signal; a control means for receiving the detection signal and outputting a light amount control code for attenuating the light amount of the illumination means; and a light amount output from the control means. and transmitting means for transmitting a control code to the lighting means.