JPH04269972A - Stimulation presenter - Google Patents

Abstract

PURPOSE:To achieve higher sleeping and relaxation effects by generating a stimulation signal synchronizing a vital information of a human body. CONSTITUTION:A pressure sensor 1 which outputs a vital information on body motion, respiration, heart beating or the like is connected to a signal converter 2 and, moreover, to an output level controller 3 to change an output level of a noise signal to be outputted from a white noise generator 4. The noise signal varying in the output level is presented with an acoustic output device 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stimulation presentation device that induces sleep or relaxation.

0002

2. Description of the Related Art Conventionally, there has been a technique shown in FIG. 5 as a technique for presenting sound that induces sleep or relaxation. In other words, commercially available software 10 such as a compact disc containing music or natural sounds is played on the playback device 1.
1 to a speaker 12 for reproduction.

As another conventional technique, as shown in FIG. 6, a sensory acoustic device is known in which a reproduction signal from a reproduction device 11 is presented via a vibrating body 13 that converts the reproduction signal into vibration stimulation.

0004

[Problem to be Solved by the Invention] However, with the above conventional configuration, the user only has to listen to the sound and vibrations from the playback device, but his or her own physiological and psychological state is reflected in the sound and vibrations. The problem was that it was not possible to enjoy it.

[0005] Furthermore, when some kind of control, such as the output level, is applied to the reproduction of commercially available software, it often results in unpleasant sounds and vibrations that are different from the intentions of the software creator. The present invention solves the above-mentioned problems, and aims to reflect the physiological and psychological state of the user in sound and vibration in a way that does not cause discomfort, thereby improving the sleep-inducing and relaxation effects of sound and vibration. It is something.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a biological information detection device, a signal conversion device that generates a control signal in synchronization with an output signal of the biological information detection device, and a white noise generation device. an output level control device that receives the white noise generated by the white noise generation device as an input and controls the output of the white noise generation device in accordance with a control signal from the signal conversion device; A sound output device that outputs a signal as a sound stimulus is provided.

[0007]

[Operation] With the above-described configuration, the present invention detects indicators representing the physiological and psychological state of the user, such as body movements, breathing, and heartbeat, and outputs control signals in synchronization with these indicators. This also changes the output level of white noise.

[0008]

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

In FIG. 1, a pressure sensor 1 used as a biological information detection device is connected to a signal conversion device 2. As shown in FIG. The output level control device 3 receives the noise signal from the white noise generator 4 and the control signal from the signal converter 2 as input signals, and is connected to send an output signal to the audio output device 5 .

In the above configuration, the pressure sensor 1 detects biological information and outputs an analog signal. The signal conversion device 2 converts this analog signal into a signal having an appropriate amplitude width as a control signal to the output level control device 3. The output level control device 3 changes the output level of the noise signal output from the white noise generation device 4 according to the signal level converted by the signal conversion device 2. The sound output device 5 presents a noise signal whose output level changes to the user as a sound stimulus. Note that the output level control device 3 can be, for example, an electronic volume control.

Next, a case will be described in which the biological information detection device detects body movement, respiration, and heartbeat as synchronization signals. In FIG. 2, for example, a piezoelectric element 6 of a pressure sensor provided on bedding such as a bed is installed so that when a user lies down on the piezoelectric element 6, the user's body is exactly located on the piezoelectric element 6. The piezoelectric element 6 may come into contact with the body directly or through a sheet, cushion, or the like. The piezoelectric element 6 is connected to a preamplifier 7, and the preamplifier 7 is further connected to a bandpass filter 8.

[0012] The pressure element 6 captures body movements caused by body movements, breathing, and heartbeats as pressure changes and reflects them in electric potential. The preamplifier 7 amplifies the amount of change in potential to a processable standard. The bandpass filter 8 extracts only signals in a specific frequency band from changes in the amplified potential, thereby reducing body movement and
Detects breathing and heartbeat.

FIG. 3 is an explanatory diagram showing the correspondence between the set value of the pass frequency band of the bandpass filter 8 and the waveform of the obtained biological information. In the figure, (a) indicates a pass band of approximately 1 to 10
(b) is the waveform of body movement when set to Hz, (b) is the waveform of respiration when the passband is set to approximately 0.3 to 1 Hz, (c)
is the waveform of a heartbeat at rest when the passband is set to about 1 to 10 Hz. In the manner described above, information on body movement, respiration, and heartbeat can be extracted as synchronization signals. Since the amplitude width of each biological information waveform is different, the amplification factor of the preamplifier 7 may be set according to the biological information.

Next, another embodiment of the present invention will be described. FIG. 4 is a configuration diagram of an embodiment in which vibration stimulation is output. In the figure, a vibration element 9 presents the noise signal from the output level control device 3 to the user as a vibration stimulus. Vibration element 9
A possible example would be a bass speaker with a rigid body attached to it.

[0015] The selection of the biometric information synchronization signal is the same as that described in FIGS. 2 and 3. With the above configuration, the output level of white noise changes in various ways, allowing the user to enjoy a variety of sounds and vibrations that reflect the user's physiological and psychological state.

[0016]

[Effects of the Invention] As explained above, the stimulation presentation device of the present invention has the following effects. (1) Since sound, vibration, and stimulation are presented in synchronization with biological information that reflects the user's physiological and psychological state, interactive viewing is possible, and the sleep-inducing or relaxation effect can be further enhanced. (2) Since white noise is used as a signal source, it is easy to process the signal, and for example, a case where fluctuations in heart rate are 1/frequency (for example, 1/f fluctuations) is likely to be reflected as a stimulus.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a stimulus presentation device in an embodiment of the present invention.

[Figure 2] Block diagram showing the electrical processing form of the piezoelectric sensor used in the device

FIG. 3 is an explanatory diagram regarding the passband of the bandpass filter in FIG. 2.

FIG. 4 is a block diagram showing a stimulus presentation device in another embodiment of the present invention.

[Fig. 5] Explanatory diagram of a conventional stimulus presentation device

[Fig. 6] Explanatory diagram of a conventional stimulus presentation device

[Explanation of symbols]

1 Pressure sensor 2 Signal conversion device 3 Output level control device 4 White noise generator 5 Sound output device 6 Piezoelectric element

Claims (5)

[Claims] 1. A biological information detection device, a signal conversion device that generates a control signal in synchronization with an output signal of the biological information detection device, and a white noise generation device, the white noise generated by the white noise generation device an output level control device that receives noise and a control signal of the signal converter and controls the output of the white noise generator according to the control signal; and outputs the signal output from the output level control device as an acoustic stimulus. A stimulus presentation device comprising a sound output device. 2. A biological information detection device, a signal conversion device that generates a control signal in synchronization with an output signal of the biological information detection device, and a white noise generation device, the white noise generation device generating white noise generated by the white noise generation device. an output level control device that receives noise and a control signal of the signal converter and controls the output of the white noise generator according to the control signal; and outputs the signal output from the output level control device as a vibration stimulus. A stimulation presentation device consisting of a vibration device. 3. The stimulation presentation device according to claim 1, wherein the biological information detection device detects body movement. 4. The stimulation presentation device according to claim 1, wherein the biological information detection device detects respiration. 5. The stimulation presentation device according to claim 1, wherein the biological information detection device detects heartbeat.