JP2011255008A - Sleep induction system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sense stimulation appropriate for inducing sleep of a user.SOLUTION: Breathing of the user is detected by a breathing sensor 12 and a sleeping sensor 11 detects a sleeping state of the user. A stimulus addition part 30 is provided with a speaker part 31 for giving a sound stimulation to the user, whereas a control unit 20 controls the stimulation addition part 30 in accordance with a detection content by the breathing sensor 12 and the sleeping sensor 11. That is, the control unit 20 controls a sound image of sound output by the speaker part 31 in accordance with breathing of the user detected by the breathing sensor 12.

Description

  The present invention relates to a sleep inducing system that guides a user to a sleep state by guiding sensory stimulation in conjunction with the physiological state of the user.

  Traditionally, a user's specific physiological state (eg, breathing) is monitored, and specific sensory stimuli (eg, sound stimuli) are applied to the physiological state characteristics to provide each stage of sleep. Techniques for guiding have been proposed (see, for example, Patent Document 1). Patent Document 1 discloses a technique for generating a short quiet sound from a speaker each time a sleeper inhales in order to guide the sleeper to a desired sleep stage. That is, by generating sounds as sensory stimuli according to the physiological state of breathing, pacing the sleeper, and by changing the sensory stimulus, reading the sleeper and different sleep stages Is leading to.

Special table 2007-512086

  By the way, in the technique described in Patent Document 1, sensory stimulation (specifically, sound) is given to the extent that does not disturb sleep of the sleeper (paragraph 0037). In addition, there is a statement that the size, quantity, tone, quality, pattern, frequency, angle, composition, position of the sound source, position of application, etc. are adjusted with respect to the sensory stimulus in order to lead to another sleep stage (0017). Paragraph).

  However, the technique described in Patent Document 1 is not supposed to induce a user before falling asleep to a sleep state. That is, in the technique described in Patent Document 1, the purpose of adjusting the sensory stimulation is to lead from one sleep stage to another sleep stage, and in order to induce the user before falling asleep to sleep state, No consideration is given to changing the stimulus.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide a sleep onset inducing system that provides a sensory stimulus suitable for inducing a user to a sleep onset.

  In order to achieve the above object, the present invention provides a respiration sensor that detects a user's respiration, a sleep sensor that detects a user's sleep state, a stimulus addition unit that provides a stimulus to the user, a respiration sensor, and sleep A control unit that controls the stimulus adding unit according to the detection content of the sensor, the stimulus adding unit includes a sound stimulating unit that gives a sound stimulus to the user, and the control unit is configured to output sound from the sound stimulating unit. The sound image is controlled in accordance with the user's respiration detected by a respiration sensor.

  The sound stimulation unit has at least two speaker units, and the control unit adopts a configuration that generates a pseudo three-dimensional sound image by giving the speaker unit an audio signal obtained by convolving a human head-related transfer function. can do.

  It is desirable that the stimulus adding unit includes a video display unit that gives a stimulus by video to the user.

  In this case, it is desirable that the control unit generates a background image that relaxes the user as an image displayed by the image display unit and a guidance image that visualizes the user's breath detected by the respiration sensor.

  The video display unit is preferably a projector, and the control unit preferably includes a distortion correction unit that corrects distortion of the video projected by the video display unit.

  The stimulus adding unit may include a light stimulus unit that gives a light stimulus to the user.

  In addition, the stimulus adding unit may include a vibration stimulation unit that applies vibration stimulation to the user.

  Furthermore, a wake-up time setting unit for setting the wake-up time may be added, and the control unit may start the operation of the stimulus adding unit based on the sleep time obtained from the wake-up time set by the wake-up time setting unit. .

  The sleep sensor can employ a configuration that detects a user's sleep without contact.

  You may provide a respiration sensor, a sleep sensor, a control part, and a stimulus addition part in a massage chair.

  According to the configuration of the present invention, the sound image of the sensory stimulus output from the sound stimulation unit is controlled in accordance with the user's breath detected by the breath sensor, so that the user is controlled by controlling the sound image according to the breath. Therefore, there is an advantage that it is possible to induce the respiration of the user, and it is easy to induce the sleep state by relaxing the user.

1 is a block diagram illustrating a first embodiment. The example of use same as the above is shown, (A) is a side view, (B) is a plan view. The other usage example same as the above is shown, (A) is a side view, (B) is a plan view. It is operation | movement explanatory drawing same as the above. FIG. 6 is a block diagram illustrating a second embodiment.

(Embodiment 1)
In the present embodiment, as shown in FIG. 1, a sensor unit 10 that detects a physiological state of the user, a stimulus adding unit 30 that gives a sensory stimulus to the user, and a stimulus addition based on the output of the sensor unit 10 The control part 20 which controls the stimulus given to a user from the part 30 is provided. In this embodiment, it is assumed that the user is lying on a bed as a bedding. However, the embodiment described below is a user who uses a futon, a reclining chair, or a massage chair. This does not prevent the application of the technique of this embodiment.

  The sensor unit 10 includes a sleep sensor 11 that detects whether the user is awake or sleep, and a breath sensor 12 that detects the user's breathing.

  The sleep sensor 11 detects the body motion of the user lying on the bed and evaluates the degree of body motion to detect whether the user is awake or sleep. Specifically, a pressure sensor or an acceleration sensor is provided on a bed mat or the like, and the degree of body movement is evaluated using an output waveform of the pressure sensor or the acceleration sensor. When body motion occurs in the user, the peak value of the output waveform of the pressure sensor or acceleration sensor increases. Therefore, the presence or absence of body motion can be detected by comparing the amplitude of the output waveform with a threshold value.

  In addition to a configuration that detects the user's movement directly or indirectly, such as a pressure sensor or an acceleration sensor provided on the bed, the body movement is computer image processing from an image obtained by capturing the user on the bed in a non-contact manner. It is possible to adopt a configuration for detecting by the above.

  The sleep sensor 11 determines that the user has fallen asleep when the state in which no body movement is detected reaches a prescribed determination time, and detects that the user has transitioned from the awake state to the sleep state. Since the frequency of occurrence of body movement is generally higher in the awake state than in the sleep state, it may be determined whether the body is awake or sleep. In other words, the frequency of body movement in unit time is detected, and when the state in which the frequency of body movement in unit time is equal to or less than a predetermined value continues for a plurality of times, it is determined that the user has transitioned from the awake state to the sleep state. Also good. In other words, when the state where the frequency of body movement continues below the specified value in a plurality of continuous unit times continues, it is determined that the sleep state has been entered.

  When the sensor can be used as the sleep sensor 11, the transition from the awake state to the sleep state may be detected using an electroencephalogram or a heartbeat. The electroencephalogram can be detected by an electroencephalogram sensor in which a large number of infrared sensors are attached to a net worn by the user on the head. For the heartbeat, a configuration in which a pressure sensor or an acceleration sensor is provided on a belt wound around the chest of the user is employed, or a configuration in which a pressure sensor or an acceleration sensor is provided on a bed mat.

  On the other hand, the respiration sensor 12 includes a belt that is detachably wound around the user's abdomen, and an acceleration sensor or a pressure sensor that is attached to the belt and detects expansion and contraction of the abdomen. The belt is provided with a sheet-like fastener at the end, and the dimension of overlapping the end can be adjusted over a wide range.

  The planar fastener is composed of a first cloth material raised in a pile shape and a second cloth material raised with a tip portion formed in a hook shape, and the first cloth material and the second cloth material are combined. When superposed, the second cloth material is configured to be coupled to each other by being caught on the first cloth material. Therefore, in the state where the belt is wound around the user's abdomen, the length of the belt is set so that the end portions of the belt overlap, the first cloth material is provided on one of the overlapping portions, and the second cloth is provided on the other. Material is provided. With this configuration, the amount of belt wrapped around the user's abdomen can be freely adjusted.

  If a belt-like configuration is employed as the respiration sensor 12, the user must wear the respiration sensor 12 every time it is used, which may hinder use. Moreover, sleep may be disturbed if a configuration that is worn on the user's body is employed. Therefore, it is desirable to adopt a configuration in which a pressure sensor or an acceleration sensor is provided on a bed mat or the like as the respiration sensor 12.

  Since the same problem occurs not only in the respiratory sensor 12 but also in the sleep sensor 11, it is desirable to employ a configuration in which the sleep sensor 11 is used without being worn on the user's body. As is apparent from the above configuration, when a pressure sensor or an acceleration sensor is provided on a bed mat or the like, the output of the pressure sensor or the acceleration sensor is used, and the processing for the output is made different, thereby making the pressure sensor or the acceleration sensor a sleep sensor. 11 and the respiration sensor 12 can be used together.

  On the other hand, the stimulus adding unit 30 includes a speaker unit 31 as a sound stimulation unit that gives sound stimulation to the user and a video display unit 32 as a video stimulation unit that gives video stimulation to the user. As shown in FIG. 2, the speaker unit 31 includes two left and right speakers 35 provided on the head board 41 of the bed 40. The number of speakers 35 is not particularly limited, but at least two speakers 35 are required. Further, it is desirable that the distance between the left and right speakers 35 be larger than the left and right dimensions of the user's head.

  On the other hand, as shown in FIG. 2, the video display unit 32 is arranged at a position where the display content can be seen from the user 1 on the bed 40. Actually, the screen 44 is formed on the ceiling surface 42 so that the display contents can be seen when the user is lying on the bed 40, and the screen 45 is also formed on the wall surface 43 on the foot side of the bed 40. It is desirable to do. Therefore, it is desirable that the video display unit 32 be configured to use a projector and change the video projection direction using an optical element such as a mirror.

  Any device other than a projector can be used as the video display unit 32 as long as the screens 44 and 45 can be formed on the ceiling surface 42 and the wall surface 43. For example, a flat panel display such as a liquid crystal display, a plasma display, or an organic EL display can be employed. Further, a flat panel display may be arranged on one of the ceiling surface 42 and the wall surface 43 and a screen may be formed on the other by a projector.

  The control unit 20 controls the content of the sound output from the speaker unit 31 and the content of the video displayed by the video display unit 32 based on the physiological state of the user 1 detected by the sensor unit 10. . Hereinafter, when the contents of sound and video are not distinguished, they are referred to as “content”. That is, the control unit 20 controls content to be presented to the user 1 from the speaker unit 31 and the video display unit 32 based on the output of the sensor unit 10.

  The control unit 20 has a function of forming a pseudo three-dimensional sound image using sound output from the two speakers 35 provided in the speaker unit 31. In other words, a convolution operation unit 23 that convolves an average human head-related transfer function with an audio signal is provided so as to obtain a pseudo surround effect. The audio signal input to the convolution operation unit 23 is generated by the integrated control unit 21, and the head-related transfer function given to the convolution operation unit 23 is stored in the transfer function storage unit 22.

  The convolution operation unit 23 includes a filter that controls a sound image by adjusting a transfer function that is convolved with an audio signal, and a compensation processing unit that compensates characteristics of a reproduction system such as crosstalk according to the position of the speaker 35. I have. The filter generates a two-channel audio signal to output the audio signal given from the integrated control unit 21 from the left and right speakers 35, and adjusts the transfer function for each frequency of the audio signal. Since a technique for obtaining a pseudo surround effect using a head-related transfer function is well known, it will not be described in detail.

  The head-related transfer functions stored in the transfer function storage unit 22 are actually different for each individual, but an average human head-related transfer function is used without considering individual differences. For example, a head-related transfer function measured using a dummy head or a head-related transfer function measured using a specific individual as a subject can be used. When considering individual differences in head-related transfer functions, an average head-related transfer function obtained from measured values for a plurality of subjects may be used. Furthermore, it is possible to prepare a plurality of types of head-related transfer functions in the transfer function storage unit 22 and select the head-related transfer functions according to the user's preference. When selecting a head-related transfer function from multiple types, the user selects it by operating a switch, etc., and a sensor for estimating the shape of the user's head is provided, and it is judged to be optimal from the options. A configuration in which the head-related transfer function is automatically selected may be employed.

  As the sensor in this case, a configuration using a plurality of pressure sensors provided on the mat or pillow of the bed 40 and using a distribution of pressure received from the head can be employed. Further, the headboard 41 may be configured to measure the shape of the head and ears using a measuring device that performs three-dimensional measurement of the head (using a light cutting method, a time-of-flight method, or the like).

  The integrated control unit 21 instructs the transfer function to be given to the filter of the convolution operation unit 23 from the transfer function storage unit 22, and controls the sound image according to the content of the audio signal. The control of the sound image includes not only control for causing the user 1 to localize the sound image to a specific position, but also control for forming a sound image that spreads around the user 1 and is not localized.

  On the other hand, the content of the video displayed using the video display unit 32 is determined by the video signal supplied from the integrated control unit 21. Here, when a projector is used as the video display unit 32, as shown in FIG. 2, if the video display unit 32 is arranged at a position that is not biased left and right when viewed from the user 1 lying on the bed 40, the ceiling is used. The screens 44 and 45 formed on the surface 42 and the wall surface 43 are rectangular or trapezoidal. That is, when the video display unit 32 that is a projector is arranged on a plane passing through the trunk of the user 1, the video is not distorted or trapezoidal.

  On the other hand, as shown in FIG. 3, when the video display unit 32, which is a projector as viewed from the user 1 lying on the bed 40, is arranged on the left and right sides (right side in the illustrated example), the ceiling The screens 44 and 45 formed on the surface 42 and the wall surface 43 are distorted in an unequal square shape. In short, assuming that the original video is rectangular, if the distance from the video display unit 32 to the four corners of the screens 44 and 45 projected onto the ceiling surface 42 or the wall surface 43 is equal, distortion does not occur. If the distance from the part 42 to the four corners is not equal, the screens 44 and 45 are distorted.

  Therefore, the control unit 20 is provided with a distortion correction unit 24 for deforming the image projected from the image display unit 32 in advance. The distortion correction unit 24 applies an appropriate transformation matrix in consideration of distortion of the image projected on the ceiling surface 42 and the wall surface 43 to the image in order to deform the image. The conversion matrix is determined by manual adjustment by the user 1 in a state where an appropriate video is displayed on the ceiling surface 42 or the wall surface 43 from the video display unit 32. Note that it is also possible to geometrically determine the transformation matrix using the actual measurement value of the positional relationship between the video display unit 32 and the plane on which the video is projected. Furthermore, when distortion correction is possible by operating an optical system such as a lens or a mirror in the video display unit 32, the optical system is adjusted without performing distortion correction on the video signal using the transformation matrix. The distortion may be corrected only with this.

  Below, the example of the content which the integrated control part 21 produces | generates based on the output of the sensor part 10 is demonstrated. For the operation of the control unit 20, the “sleeping induction” mode that guides the user 1 from the awake state to the sleeping state, the “sleeping” mode when the user 1 is sleeping, and the user 1 is woken up. There is a "wake-up guidance" mode. In the illustrated example, the control unit 20 is configured to control the speaker unit 31 and the video display unit 32, but may have a function of controlling the indoor environment. For example, the function of adjusting the illuminance and color temperature of lighting equipment with lighting equipment, the function of adjusting indoor temperature and humidity with air conditioning equipment (including humidifiers and dehumidifiers), the function of adjusting indoor scents, etc. It may have a function of controlling the indoor environment related to. In addition, as an apparatus for adjusting the scent in a room, an apparatus that adjusts the mixing ratio of a plurality of types of fragrance components to scatter the fragrance components is known.

  Hereinafter, the operation of the sleep onset guidance mode will be mainly described. In the sleep onset guidance mode, the integrated control unit 21 generates content that matches the breathing of the user 1 detected using the breathing sensor 12. As shown in FIG. 4, when the sleep onset guidance mode is started (S1), a breathing support program is started so as to adjust the breathing of the user 1 (S2).

  Here, the sleep onset guidance mode employs a configuration that starts when a user operates a switch or starts when a time measured by a clock unit (not shown) becomes a preset start time. In addition, when the sleep onset guidance mode is started, a device (not shown) is controlled so that the indoor environment becomes an environment suitable for sleep before the start of the breathing support program. For example, when the illuminance or color temperature of the lighting device is lowered and the television broadcast is viewed using the speaker unit 31 or the video display unit 32, the reception of the television broadcast is terminated.

  The breathing support program is an operation for creating an environment for guiding the expiration time of the user 1 so as to extend the expiration time, and the user 1 is guided to a relaxed state by extending the expiration time. In order to guide the user to extend the expiration time, content changing in accordance with the breathing of the user 1 detected by the breathing sensor 12 is transmitted to the user 1 from the speaker unit 31 and the video display unit 32 as follows. Present it.

  An example of such content will be described. As sounds, natural sounds, healing music, and inorganic sounds are given without localization, and induction sounds similar to breathing sounds are included. By using the background sound, an effect of relaxing the user 1 can be expected. The volume of the guidance sound and the sound image are controlled so as to represent expiration and inspiration using a sound source such as white noise.

  For example, when expiration is started by the respiration sensor 12, the volume of the guidance sound is reduced as time elapses, the sound image is converged, and the guidance sound is controlled so that the sound image is further away from the user 1. On the other hand, when inspiration is started by the respiration sensor 12, the volume of the guidance sound is increased with time, the sound image is diverged, and the guidance sound is controlled so that the sound image approaches the user 1. The sound image of the guidance sound may be controlled to move in the front-rear direction of the user 1 without performing convergence and divergence, or to perform only convergence and divergence without movement.

  By controlling the volume and sound image of the guide sound in this way, the user can feel as if air is flowing along with breathing, so that the user is more aware of breathing. In addition, since the user 1 listens to a guidance sound similar to a breathing sound in accordance with breathing, the user 1 has a feeling as if his breathing sound is being fed back, and breathing is induced. Become.

  Further, the video display unit 32 displays a background video in which a large number of point groups gently move in one direction to the left and right, and further displays a guidance video whose shape changes according to breathing together with the background video. When the point cloud as described above is used as the background image, it is possible to give the user 1 the feeling of looking at the starry sky, and the effect of relaxing the user 1 can be obtained. In addition, as a background image, an image of the natural world (forest, sea, or sky) or an image reminiscent of the universe can be used instead of a point cloud.

  On the other hand, the guidance image may be an image that visualizes the respiration of the user 1 detected by the respiration sensor 12, and may be an image that is deformed so that the point cloud is separated and concentrated according to the respiration, for example. When such a guide image is used, the image signal is generated so that the guide image is converged as time elapses from the start of expiration, and the guide image is diverged when inspiration starts. The point cloud composing the guidance image is irregularly distributed on the screen before the exhalation is started, and is determined in advance as time passes while the exhalation is continued when the exhalation is started. Move to converge to a given shape (such as a rectangle). Therefore, it is possible to induce the expiration to be extended by adjusting the time until the convergence to a predetermined shape.

  The above-described operation of the breathing support program is an example, and the shape of the guidance image is not limited. The convergence and divergence of the guidance sound and the convergence and divergence of the guidance image may be different from the above-described operations. Good.

  When the breathing support program is started, the user 1 is guided to fall asleep by presenting the guide sound and the guide video to the user 1 as described above. 11, it is determined whether the user 1 is awake or sleep. When the sleep sensor 11 detects that the user 1 is in the sleep state (S3), the integrated control unit 21 stops the breathing support program (S4). Furthermore, it shifts to the sleep mode described above (S5). In the sleep mode, the stimulus adding unit 30 and the like are controlled so that the room becomes an environment suitable for sleeping. For example, output of sound from the speaker unit 31 is stopped, and presentation of video by the video display unit 32 is stopped. Further, the indoor lighting device is turned off.

  In the above-described operation, the breathing support program is stopped when the sleep sensor 11 detects the user's sleep in step S3. However, the user 1 may manually stop the breathing support program using a switch or the like. Further, the content output by the integrated control unit 21 is not limited to the above-described content, and the content may be selected according to the physiological state of the user 1 detected by the sensor unit 10.

  Further, in the above configuration example, the two speakers 35 are arranged side by side on the one surface of the head board 41 as the speaker unit 31, but at least one speaker 35 is used as the head board while three or more speakers 35 are used. You may employ | adopt the structure arrange | positioned in the place different from 41. FIG. Increasing the number of speakers 35 can reduce the influence of the position and orientation of the head of the user 1 on the position of the sound image. That is, even if the position of the user's 1 head changes, the position of the sound image hardly changes.

(Embodiment 2)
In the present embodiment, as shown in FIG. 5, in addition to the sleep sensor 11 and the respiratory sensor 12 in the sensor unit 10, a camera 13 that detects sleep without contact is added. Further, in the illustrated example, the stimulus adding unit 30 includes a light stimulating unit 33 and a vibration stimulating unit 34 in addition to the speaker unit 31 and the video display unit 32 shown in FIG. The control unit 20 basically has the same configuration as that of the first embodiment, but has a function of giving an instruction to the light stimulation unit 33 and the vibration stimulation unit 34 provided in the stimulation adding unit 30. Furthermore, a wake-up time setting unit 50 is attached to the control unit 20.

  The camera 13 has an imaging device arranged to capture the facial expression of the user 1 lying on the bed 40, and changes from the awake state to the sleep state based on the facial expression of the user 1 captured by the imaging device. Detecting the transition of users without contact. That is, the facial expression of the user 1 such as a heel is monitored by an image captured by the imaging device, and when the facial expression is determined to be a sleep state (for example, when the heel is closed for a predetermined time), Judged as a state. Although the sleep state detection by the camera 13 can be used alone instead of the sleep sensor 11, it is desirable to use it together with the sleep sensor 11.

  Thus, by detecting the sleep of the user 1 by combining the sleep sensor 11 and the camera 13, the accuracy of the sleep state can be improved. When the camera 13 is used alone as a sleep sensor, it is possible to prevent the mat of the bed 40 from feeling uncomfortable by detecting sleep without contact. That is, even a user who is sensitive to contact stimulation can detect a transition to a sleep state without disturbing sleep.

  On the other hand, the light stimulating unit 31 provided in the stimulus adding unit 30 has a function of giving a light stimulus to the user 1 using a lighting device arranged indoors. For example, a base lamp used for indoor lighting and a rhythm lamp that changes the light environment in accordance with respiration detected by the respiration sensor 12 are provided. Rhythm lamps have at least one variable among illuminance (luminous intensity), color temperature, and light distribution (irradiation direction), and the variable elements are adjusted according to breathing, as in the case of guided sounds and images. Is done. For example, the color temperature is lowered during inhalation, and the color temperature is increased with time during exhalation.

  The vibration stimulation unit 34 provided in the stimulation adding unit 30 includes vibrators arranged at a plurality of locations of the bed 40. The control unit 20 selects a vibrator to be driven and performs control to change the vibration intensity of the vibrator. Therefore, the control unit 20 controls the position and vibration intensity of the vibrator to be driven according to the physiological state of the user 1 detected by the sensor unit 10, thereby changing the user 1 from the awake state to the sleep state. Induce.

  For example, a vibration as if sitting on a train seat can be applied to induce sleep. This type of vibration has a periodicity with a substantially constant period and is accompanied by fluctuations in the period, vibration waveform, position, direction, and the like. Therefore, by giving a vibration that simulates this kind of vibration, the user 1 can be relaxed and guided to a sleep state.

  Similarly to the stimulation by sound or video, the period, the vibration intensity, and the stimulation location where the vibration stimulation is applied may be changed in accordance with the respiration of the user 1 detected by the respiration sensor 12. For example, the entire mat of the bed 40 can be vibrated during inhalation, and can be relaxed by inducing breathing by locally vibrating during exhalation.

  Further, during sleep, when an apnea state is detected by the respiration sensor 12, the user 1 may be stimulated by the vibration stimulation unit 34 (or the speaker unit 31) and turned over. Thus, by giving a stimulus during sleep, it is possible to prevent the apnea state from continuing. Since the respiration sensor 12 can also detect the state of snoring, it is possible to give a stimulus to avoid snoring in the same manner. For detecting snoring, a microphone may be provided separately from the respiration sensor 12.

  The wake-up time setting unit 50 is a man-machine interface for inputting the time when the user 1 wakes up. When the wake-up time is set by the wake-up time setting unit 50, the control unit 20 calculates an appropriate sleep time and automatically starts the sleep mode according to the sleep time. That is, when the wake-up time is set by the wake-up time setting unit 50, the sleep-inducing mode is activated. The setting content of the wake-up time setting unit 50 may be confirmed as voice guidance from the speaker unit 31 by a switch operation by the user 1. In this function, the set wake-up time is notified as a voice message (for example, “the wake-up time is set at 7:00”).

  The present embodiment is the same as the first embodiment except for the configuration and operation described above. Moreover, although the example which gives a light stimulus and a vibration stimulus was demonstrated as this irritation | stimulation part 30 in this embodiment, irritation | stimulation, such as a heat and an airflow, can also be given.

  To give a thermal stimulus, place a device that can adjust the temperature, such as a Peltier element, on the mat or pillow of the bed, control the head to cool and the feet to warm, realizing cold head heat Can contribute to the induction of sleep. In the sleep mode, the temperature is controlled to an appropriate temperature so as not to get hot and hard to sleep.

  Moreover, in order to give the stimulus by the airflow, the direction, intensity, and temperature of the airflow may be changed in accordance with the respiration of the user 1 detected by the respiration sensor 12. For example, the airflow is controlled so that an airflow from the front toward the face is generated during inhalation and an airflow toward the front of the face is generated during expiration.

  In the above-described example, the sensor unit 10, the control unit 20, and the stimulus applying unit 30 are attached to the bed 40, but these can be provided in a futon, a reclining chair, a massage chair, or the like. In particular, by being attached to the massage chair, it can be combined with the function of the massage chair, and can be realized by changing and adding some functions.

DESCRIPTION OF SYMBOLS 11 Sleep sensor 12 Respiration sensor 13 Camera 20 Control part 24 Distortion correction part 30 Stimulation addition part 31 Speaker part 32 Image | video display part 33 Light stimulation part 34 Vibration stimulation part 35 Speaker 50 Wake-up time setting part

Claims (10)

  Respiration sensor for detecting the user's respiration, sleep sensor for detecting the user's sleep state, stimulus adding unit for giving a stimulus to the user, and stimulus addition according to the detection contents by the breath sensor and the sleep sensor A control unit that controls the sound source, the stimulus adding unit includes a sound stimulation unit that gives a sound stimulus to a user, and the control unit outputs a sound image of the sound output from the sound stimulation unit by the respiratory sensor. A sleep-inducing system characterized by being controlled in accordance with a detected user's breathing.   The sound stimulation unit includes at least two speaker units, and the control unit generates a pseudo three-dimensional sound image by providing the speaker unit with an audio signal obtained by convolving a human head-related transfer function. The sleep-inducing system according to claim 1.   The sleep input guidance system according to claim 1, wherein the stimulus adding unit includes a video display unit that gives a stimulus by video to a user.   The said control part produces | generates the background image | video which relaxes a user as an image | video displayed by the said image | video display part, and the induced image | video which visualizes the user's respiration detected by the said respiration sensor. The sleep induction system according to 3.   5. The sleep-inducing system according to claim 3, wherein the video display unit is a projector, and the control unit includes a distortion correction unit that corrects distortion of a video projected by the video display unit.   The sleep induction system according to any one of claims 1 to 5, wherein the stimulus adding unit includes a light stimulation unit that applies light stimulation to the user.   The sleep inducing system according to claim 1, wherein the stimulus adding unit includes a vibration stimulation unit that applies vibration stimulation to the user.   A wake-up time setting unit for setting a wake-up time is added, and the control unit starts the operation of the stimulus adding unit based on a sleep time determined from the wake-up time set by the wake-up time setting unit. The sleep-inducing system according to any one of claims 1 to 7.   The sleep onset guidance system according to any one of claims 1 to 8, wherein the sleep onset sensor detects a user's sleep on a non-contact basis.   The sleep sensor system according to any one of claims 1 to 9, wherein the breathing sensor, the sleep sensor, the control unit, and the stimulus adding unit are provided in a massage chair.

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