JP2012110528A - Sleep device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sleep device which can shorten a subject's sleep time by presenting a plurality of kinds of stimuli.SOLUTION: A sleep inducing unit 110 and a sleep state control unit 120 of the sleep device 100, which present two or more kinds of stimuli to a subject M to induce the subject's sleep, finish the presentation of the stimuli in the order of stimulus with stronger effect of inducing the sleep of the subject M among stimuli started to be presented to the subject M. Generally, the stimulus with the stronger effect of inducing the sleep of the subject M has a higher effect of making the subject M sleep fast, but is more likely to inhibit the sleep of the subject M. Thus, by finishing the presentation in such a way that the stimulus with the higher effect of inducing the sleep of the subject M is finished at an earlier timing, factors inhibiting the sleep of the subject M can be reduced. In this way, it is possible to prevent the stimulus presented from inhibiting the sleep of the subject M and reduce the time required to sleep.

Description

  The present invention relates to a sleep device, and more particularly, to a sleep device that gives a stimulus to a subject.

  An apparatus for appropriately taking a nap for a subject has been proposed. For example, in Patent Document 1, together with a means for measuring a user's heart rate, a relaxation inducing means for giving a stimulus for relaxing the user and leading to a sleep state, a sedation maintaining means for maintaining the user's sleep state, A refresh stimulation means for giving a stimulus for raising a user's consciousness level, a wakefulness maintaining means for realizing a high degree of wakefulness for the user, and a control means for controlling these means. After activating within the relaxation period, the sedation maintaining means is activated within the sedation maintenance period, then the refresh stimulating means is activated within the refresh period, and finally, the wakefulness maintaining means is activated within the wakefulness maintenance period, An apparatus is disclosed in which the control means creates a state in which there is no stimulus other than background noise during the sedation maintenance period.

Japanese Patent Application Laid-Open No. 2008-200486

  By the way, various kinds of stimuli to be presented to the subject can be considered, such as light, sound, vibration, warm heat, cold air, and smell. However, the above technique does not disclose a method for effectively presenting a plurality of types of stimuli, and there is room for improvement in terms of shortening the time for nap.

  The present invention has been made in consideration of such a situation, and an object thereof is to provide a sleep device capable of presenting a plurality of types of stimuli and further shortening a subject's nap time. There is to do.

  The present invention includes a wakefulness unit that induces sleep of the subject by presenting two or more types of stimuli to the subject, and the wakefulness unit includes the sleep of the subject within the stimulus that has started to be presented to the subject. It is a sleep device that terminates the presentation in order from the strongest inducing effect.

  According to this configuration, the sleep-inducing unit that induces the sleep of the subject by presenting two or more types of stimuli to the subject induces the sleep of the subject among the stimuli that have been presented to the subject. The presentation ends in order from the strongest effect. In general, the stronger the effect of inducing the sleep of the subject is, the higher the effect of causing the subject to sleep earlier, but the possibility of inhibiting the sleep of the subject is also increased. Therefore, the factor which inhibits a subject's sleep can be reduced by making it complete | finish at an early timing the stimulus with a strong effect which induces a subject's sleep. As a result, it is possible to prevent the subject from being able to sleep due to the stimulus presented by the subject, and to shorten the time until falling asleep. In the present invention, “two or more types of stimuli” are not necessarily limited to those of different systems such as light and sound. For example, the effect of inducing sleep of the subject within the same system of stimuli such as light and light. It also includes the concept of high and low. For example, in the case of light, red light and blue light, or 1000 lux and 30 lux are also included in “two or more types of stimuli”.

  In this case, it is possible to further include an awakening unit that awakens the subject by presenting the stimulus to the subject, and the awakening unit can increase the intensity of the stimulus presented to the subject as the subject's sleep is deeper.

  According to this configuration, the awakening unit that awakens the subject by presenting the stimulus to the subject increases the strength of the stimulus presented to the subject as the subject sleeps deeper. For this reason, it is possible to wake up the subject who is deeply sleepy and to avoid the occurrence of discomfort such as surprise the subject who is shallowly sleep by sudden stimulus presentation.

  In this case, the awakening unit presents two or more types of stimuli to the subject, thereby awakening the subject, and presenting in order from the stimulus that presents the subject with the strongest awakening effect. It can be started.

  According to this structure, the awakening unit awakens the target person by presenting two or more types of stimuli to the target person, and has a strong effect of awakening the target person among the stimuli presented to the target person. Start presentation in order. For this reason, an awakening unit will present in order from the stimulus with the strong effect which awakens a subject, and it becomes possible to awaken a subject efficiently.

  Moreover, the arousal unit can determine at least one of the kind and intensity | strength of a stimulus shown to a subject according to at least any one of the depth to the subject's sleep and the response to the subject's stimulus.

  According to this configuration, the awakening unit determines at least one of the type and intensity of the stimulus to be presented to the subject according to at least one of the depth of sleep of the subject and the response to the stimulus of the subject. Therefore, it is possible to present an appropriate stimulus according to the sleep depth of each individual subject and the response to the stimulus.

  The awakening unit can determine at least one of the type and intensity of the stimulus to be presented to the subject according to the response of the subject to the stimulus.

  According to this configuration, the awakening unit determines at least one of the type and intensity of the stimulus to be presented to the subject according to the response to the subject's stimulus. It is possible to present an appropriate stimulus according to the response to the.

  According to the sleep device of the present invention, it is possible to present a plurality of types of stimuli and further reduce the time for napping the subject.

It is a side view which shows the structure of the hardware of the sleep apparatus which concerns on embodiment. It is a block diagram which shows the structure of the software of the sleep apparatus which concerns on embodiment. It is a figure which shows operation | movement of the sleep apparatus which concerns on embodiment. It is a figure which shows the presentation method of massage stimulation. It is a graph which shows the relationship between massage stimulus presentation time and sleep depth. It is a graph which shows the relationship between massage stimulus presentation time and the time from a closed eye to sleep stage II. It is a graph which shows the relationship between the elapsed time and body temperature by the presence or absence of massage stimulus presentation. It is a table | surface which shows the olfactory fatigue characteristic for every evaluation value of an olfaction. It is a graph which shows the fatigue characteristic for every kind of odor. It is a graph which shows the recovery characteristic of the olfactory fatigue for every kind of odor. It is a graph which shows the time from the closed eye to the sleep stage I by the presence or absence of the stimulus for every kind of stimulus. It is a graph which shows the time from the closed eye to sleep stage II by the presence or absence of the stimulus for every kind of stimulus. It is a graph which shows the relationship between time for every kind of irritation | stimulation, and irritation | stimulation intensity | strength.

  Hereinafter, a sleep device according to an embodiment of the present invention will be described with reference to the drawings. The sleep device of the present embodiment is a device that is mounted on a vehicle or the like and causes a subject to take a nap. As shown in FIG. 1, the sleep device 10 according to the present embodiment includes, as a hardware configuration, a seat 20, a buttocks heater 22, a foot stool 24, a vibrator 26, a speaker 31, a side window 40, a side blind 42, and a back window. 50, a back shade 52, and a lamp 60 are provided.

  The seat 20 is for the subject M to sit down and take a nap. The seat 20 includes a buttock heater 22, a foot stool 24, and a vibrator 26. The buttocks heater 22 applies thermal stimulation to the buttocks of the subject M. The foot stool 24 is deployed when the subject M takes a nap and supports the leg of the subject M. The foot stool 24 may have a heater that applies a stimulus by heat to the leg of the subject M. The vibrator 26 gives vibration stimulation to the back of the subject M. Moreover, the sheet | seat 20 may have a massage roller which gives irritation | stimulation by massage to the back part of the subject M as shown in FIG. Or you may make the subject M wear the vibrator which gives vibration to the eyeball of the subject M.

  Further, the sheet 20 detects a physiological index such as an electroencephalogram, a heartbeat, a blood pressure, a breath, a skin potential, a body temperature, and an eye movement for acquiring information necessary for estimating the sleep depth of the subject M by contact or contact. Sensor. These sensors can be, for example, a physiological measurement device or a piezoelectric element provided in the seat 20 or the steering wheel of the vehicle. Further, the seat 20 may include a sensor for measuring the angle of the backrest of the seat 20, the pressure distribution of the seat 20, and the acceleration of the seat 20.

  The speaker 31 gives sound stimulation to the subject person M. As will be described later, the speaker 31 outputs sound such as a stream of a stream or a roar of a bird.

  The side window 40 includes a side blind 42 that blocks outside light from the side window 40 at an arbitrary ratio. The back window 50 includes a back shade 52 that blocks outside light from the back window 50 at an arbitrary ratio. In order to block outside light, shielding plates may be disposed on both sides of the headrest of the seat 20 to block outside light from the windshield leaking from the periphery of the headrest.

  The lamp 60 gives a stimulus to the subject M by light. The lamp 60 can be composed of an LED (Light Emitting Diode). As will be described later, the lamp 60 can change the light to be given to the subject M when the subject M is awake and awake. Further, a blower that blows cold air or hot air to the subject person M, and an aroma means that gives the subject person an odor may be provided.

  As illustrated in FIG. 2, the sleep device 100 according to the present embodiment includes a wakefulness unit 110, a sleep state control unit 120, a sleep depth estimation unit 122, a sleep depth control unit 124, and a rejuvenation unit 130 as a software configuration. ing. The sleeping part 110 induces sleep of the subject M by presenting the subject M with two or more types of stimuli such as light, sound, vibration, heat, cold air, and smell from the lamp 60 and the like.

  The sleep state control unit 120 controls the sleep state of the subject M. The sleep state control unit 120 includes a sleep depth estimation unit 122 and a sleep depth control unit 124. The sleep depth estimation unit 122 estimates the sleep depth of the subject M during a nap. As a sleep depth estimation method of the sleep depth estimation unit 122, a learning base, a probability model, and timer control are performed.

  The learning base creates a separation hyperplane such as a support vector machine (SVM) from the target sleep stage and the feature amount of the subject M with good separation characteristics, and subjects M to the input data. Estimate the sleep stage. As a learning device, in addition to SVM, a neural network (NN), a genetic algorithm (GA), or the like can be applied.

  The probabilistic model is a conditional probabilistic model and has a tree-structured branch model configuration based on data accumulated in verification tests so far. Other conditional probability models include rule-based models such as the Fuzzy model. The advantage of the probability model is that there is a high possibility of estimating with high accuracy for a general subject M based on a normal distribution. Since the probability model is a learning model, it is easily adapted to each target person M and can be adapted to changes in environmental conditions, usage time zones, and the like.

  The timer control uses an intelligent timer, is used in a fail-safe manner based on the learning base and the probabilistic model, and is provided twice for system safety. The advantage of timer control is that it is possible to always output the result even for unknown data on time.

  The sleep depth control unit 124 controls the sleep depth of the subject M during a nap. As a sleep depth control method of the sleep depth control unit 124, various stimulus presentations are performed as described later. The intensity and type of stimulation can be determined from the sleep depth and elapsed time. For the intensity of the stimulus, it is easy to create a conversion formula using energy or the like for the frequency, amplitude, presentation time, period, and rate of change of the stimulus. Any type of stimulus that can be sensed by the sensory sensation of the subject M applies, and any type of stimulus can be implemented as long as it is input to humans.

  The intensity and type of stimulation may be changed according to the external environment. The intensity and type of stimulation may be changed for each individual subject M. The stimulus presented to the subject M is a stimulus that can be perceived by the subject M. As the stimulus, for example, light, sound, vibration, heat, cold air, smell, and the like are applied. The intensity and type of the stimulus may be set as a map in advance. Further, the intensity and type of stimulation may be determined by a function having the sleep depth as a dependent variable.

  The cheering part 130 awakens the subject by presenting the subject M with two or more types of stimuli such as light, sound, vibration, heat, cold air, and smell from the lamp 60 and the like. The wake-up unit 130 may be partly or wholly in common with the wake-up unit 110 in the hardware or software configuration.

  Hereinafter, operation | movement of the sleep apparatus 10 of this embodiment is demonstrated. As shown in FIG. 3, when the operation is started in the sleep device 10 of the present embodiment, a sleep awakening period is performed in which a sleep induced effect for inducing the sleep of the subject M is performed. In this arousal period, heat is given to the subject M from the buttocks heater 22, and the foot stool 24 is pulled out. Further, in the hypnotic period, the side blind 42 and the back shade 52 block outside light, and the vehicle interior is darkened. Further, in the sleep period, a sound such as a stream of a stream is output from the speaker 31, and the subject M is irradiated with light for sedation from the lamp 60.

  When the subject person M falls asleep, the intelligent timer of the sleep depth estimation unit 122 is activated, and the sleep state control period for controlling the sleep state of the subject person M is executed. In the sleep state control period, an estimation period in which the sleep depth of the subject M is estimated by the sleep depth estimation unit 122 and a control period in which the sleep depth of the subject M is controlled by the sleep depth control unit 124 are executed.

  When the subject M is awakened, a climax period in which an awakening effect for awakening the subject M is performed. In this pleasant start period, vibration is given to the subject M from the vibrator 26, and the footstool 24 is stored. Further, in the early rise period, the side blind 42 and the back shade 52 are opened, and the vehicle interior is brightened. Further, in the early rise period, a sound such as a small bird roar is output from the speaker 31, and the target person M is irradiated with light for awakening from the lamp 60.

  Hereinafter, each operation will be described in detail. In the sleep device 10 of the present embodiment, the sleep device 10 performs an operation of the sleep period by the subject M sitting on the seat 20 and operating an operation switch for acquiring sleep. In the sleep period, first, the light in the passenger compartment is blocked. The side blinds 42 on both sides of the passenger compartment and the back shade 52 on the rear of the passenger compartment are closed. Further, shielding plates are arranged on both sides of the headrest of the seat 20 to shield light from the windshield leaking from the periphery of the headrest. Thereby, the illuminance of light in the passenger compartment is adjusted to be 1000 lux or less at the eye position of the subject M, and the color temperature is 2000 K or less.

  In the hypnotic period, the light in the passenger compartment is blocked and at the same time, the stimulus is presented to the subject M as follows. The lamp 60 irradiates the subject M with light for sedation. The light for sedation is set to an illuminance enough to feel light even when the subject M closes his eyes. The light for sedation is preferably blue. This light irradiation is performed for a maximum of about 6 minutes. It should be noted that red light is preferably used as the awakening light that the lamp 60 irradiates the subject M during the fast-rising period.

  The heaters disposed on the buttocks heater 22 and the foot stool 24 of the seat 20 give the subject M heat and promote sleep. The presentation of the heat is about 6 minutes at the maximum.

  The speaker 31 gives sound stimulation to the subject person M. Assuming noise masking in the external environment, the sound is set to a volume of about 60 dB, for example. Any of the following types of sounds may be used.

  For example, the speaker 31 can cut off external sound due to white noise or pink noise. Moreover, the speaker 31 can aim at arbitrary function interruption | blocking of the subject person M by a periodic monotone sound. The speaker 31 can play a simple and monotonous sound such as reading out the number, and can thereby induce the generation of the δ wave of the subject M by blocking the function of the subject M. The speaker 31 can play healing music. For example, the speaker 31 can play classical music, natural sounds such as waves, wind, and rain, wind chimes, bells, and brooks. The sound may be gradually reduced after about 4 minutes from the start of presentation.

  As shown in FIG. 4, the massage roller 27 provided on the backrest of the seat 20, the massage roller provided on the seat surface of the seat 20, an airbag, or the like gives the subject M stimulation by massage. For stimulation by massage, for example, a muscle such as a spine standing muscle of the trunk of the subject M may be pushed from the head to the toes. Further, stimulation by massage may improve the blood flow of the subject M by rolling the massage roller 27.

  As shown in FIGS. 4 and 5, the massage roller 27 is moved up and down at a cycle t, and after the predetermined stimulus presentation time T has elapsed, the presentation of the stimulus is terminated. As shown in FIG. 6, data indicating that the stimulus presentation time T of the massage by which the time from the closed eye to the sleep stage II is the shortest is 4 minutes. Therefore, the stimulus by the massage is performed for about 4 minutes. As shown in FIG. 7, the effect of radiating the body temperature of the subject M and promoting the sleep of the subject M can be expected by stimulation by massage, as shown in the ellipse in the figure.

  The vibrator 26 provided on the backrest of the seat 20 and the vibrator provided on the seating surface of the seat 20 present stimulation to the subject M by vibration. The frequency of vibration is preferably around 200 Hz, but may be 100 Hz or more.

  In the present embodiment, the subject M may be presented with stimulation by smell. Smell is said to have an effect of promoting relaxation and calming for humans. Since the olfaction is a sensory organ that is easy to adapt, presentation time and presentation interval are important. For example, as shown in FIGS. 8 and 9, the human olfaction becomes dull due to fatigue as the presentation time elapses. On the other hand, as shown in FIG. 10, after 140 seconds have elapsed from the stop of scent presentation, the olfactory dullness is suppressed with the passage of time, and the olfaction is restored. Therefore, in the present embodiment, the presentation of odors is performed with a presentation time of 120 to 220 seconds and a presentation interval of about 140 seconds.

  Various types of odors have been proposed for various aroma oils, but from the viewpoint that if they do not smell, there is no psychological effect, the important points are the presentation time and the presentation interval. As for the odor type, the smell of phytoncide or borneol can be cited as the smell of forest bath, and the smell of lavender or chamomile can be cited as the sedative odor.

  Hereinafter, a method for determining the type of stimulus to be presented to the subject M in the hypnotic period and the sleep state control period will be described. If it is possible to present a stimulus to the subject M before taking a nap, the wakefulness unit 110 and the sleep state control unit 120 of the sleep device 100 present various stimuli to the subject M before taking a nap. The type of stimulation may be determined from the change in the physiological waveform of the subject M at the time, that is, the reaction amount. Alternatively, the awakening unit 110 and the sleep state control unit 120 of the sleep device 100 may present various stimuli to the subject M after the start of nap, and determine the type of stimulus from the reaction amount of the subject M at that time. . As the types of stimulation, at least two types of the types described above are used.

  When automatic selection is performed as a method for selecting the type of stimulus, two or more types of preset stimuli are presented.

  As a method for selecting the type of stimulus, there is a method for selecting the type of stimulus by presenting all the stimuli in order and comparing their response amounts. In this case, the awakening unit 110 and the sleep state control unit 120 of the sleep device 100 extract changes in the physiological waveform of the subject M. As the physiological waveform, it is possible to use the response amount of the electrodermal activity of the subject M, the spectrum and ratio of the characteristic electroencephalogram of the electroencephalogram, and the like. The awakening unit 110 and the sleep state control unit 120 of the sleep device 100 may determine the reaction amount by a weighted average of these physiological waveforms.

  The awakening unit 110 and the sleep state control unit 120 of the sleep device 100 may compare the relative change in the reaction amount with the absolute amount. When using the relative change of the reaction amount, the relative change of the reaction amount may be compared among the types of stimuli and selected from the types of stimuli having the higher change amount. Further, when using a relative change in the reaction amount, (measured reaction amount / reference reaction amount) may be compared between the types of stimuli, and a stimulus having a large value may be selected. When using the absolute amount of the reaction amount, the wakefulness unit 110 and the sleep state control unit 120 of the sleep device 100 compare with the information on the reaction amount previously stored in the database or the like, and present if the stimulation effect is low. The stimulus may be changed. In the case of data measured only once, the wakefulness unit 110 and the sleep state control unit 120 of the sleep device 100 can be processed as a predetermined threshold value. In the case of data measured a plurality of times, the wakefulness unit 110 and the sleep state control unit 120 of the sleep device 100 can determine the average value or statistical test.

  As a method for selecting the type of stimulus, there is also a method in which the subject M selects. In this case, the target person M who acquires a nap may select the type of stimulation using a touch panel or an interface such as voice guidance. In this case, since the stimulus can be presented by matching the preference of the target person M, the effect of presenting the stimulus can be enhanced. In addition, it is possible to reduce discomfort by knowing the preference of the subject person M in advance.

  In addition, in the hypnotic period and the sleep state control period, the type of stimulus presented to the subject M may be determined based on the state of the subject M such as the depth of sleep. Furthermore, in the hypnotic period and the sleep state control period, the intensity of the stimulus presented to the subject M may be determined based on the reaction of the subject M, the depth of sleep, and the like.

  Hereinafter, a method for determining the timing of presenting the stimulus to the subject M in the hypnotic period and the sleep state control period will be described. In the present embodiment, the wake-up part 110 and the sleep state control part 120 of the sleep device 100 present the several types of stimuli selected as described above to the subject M at the start of nap. The higher the effect of stimulation, the higher the effect of sleeping the subject M faster, but the higher the possibility of inhibiting sleep. In this embodiment, the wake-up part 110 and the sleep state control part 120 of the sleep device 100 are: The presentation ends after a certain time in order from the strongest effect of inducing the sleep of the subject M.

  It is assumed that data on the effect of inducing sleep of the subject M by the stimulus is obtained as shown in FIGS. These data are obtained by presenting each type of stimulus to a subject twice and measuring twice. In addition, in FIG.11 and FIG.12, the thing without an error display is measured only once. As shown in FIG. 11, the strength of the effect of shortening the time from the closed eye to the sleep stage I is in the order of light, massage / vibration to the eye, music, and heat from the strongest. Moreover, as shown in FIG. 12, the strength of the effect of shortening the time from the closed eye to the sleep stage II is the order of music, vibration to the eye, light, and heat from the strongest. Therefore, in the present embodiment, the awakening unit 110 and the sleep state control unit 120 of the sleep device 100 give priority to the effect of shortening the time from the closed eye to the sleep stage I, and as shown in FIG. End the presentation of stimuli in the order of vibration, music and heat.

  Termination of the presentation of the stimulus is performed by gradually weakening the stimulus in the above-described order after reaching the sleep stage I, which is the sleep stage to which the subject M is finally going. The method of weakening the stimulus may be a sine wave or a sigmoid shape. It may also be a change based on Weber-Fechner's law. Alternatively, for various kinds of stimuli, when the time from the closed eye to the sleep stage I as shown in FIG. 11 or when the time from the closed eye to the sleep stage II as shown in FIG. The hypnotic unit 110 and the sleep state control unit 100 may end the presentation of each type of stimulus.

  In the wake-up period, the wake-up part 130 and the sleep state control part 120 of the sleep device 100 can determine the stimulus presentation method from the state of the subject M just before the nap, for example, in the same manner as the sleep period. In the present embodiment, the wake-up unit 130 and the sleep state control unit 120 of the sleep device 100 increase the intensity of stimulation given to the subject M as the depth of sleep of the subject M increases. Specifically, the deeper the sleep depth of the subject M, the higher the intensity of the stimulus is presented to the subject M preferentially from the types of stimuli that have a strong effect of awakening the subject M.

  Further, in the present embodiment, the wake-up unit 130 and the sleep state control unit 120 of the sleep device 100 start presenting in order from the strongest effect that awakens the subject M among the stimuli presented to the subject M. Assuming that the effect of awakening the subject M from various stimuli and the effect of inducing the subject M from the closed eye to the sleep stage I are similar to each other, as shown in FIG. To light, massage, vibration to eyes, music, and heat. Therefore, in the present embodiment, as shown in FIG. 13, presentation of stimulation to the subject M is started in the order of light, massage / vibration to the eyes, music, and heat.

  Since it is not necessary to consider the possibility of disturbing the sleep of the subject M due to the stimulus at the time of awakening, unlike the time of awakening, the wake-up unit 130 and the sleep state control unit 120 of the sleep device 100 end the various types of stimulation. The times may or may not match. In addition, selection of stimulus type and intensity at the time of awakening and timing of presentation of the stimulus may be performed in the same manner as in the above-mentioned period of sleep. good. Furthermore, if necessary, the wake-up unit 130 and the sleep state control unit 120 of the sleep device 100 may simultaneously present the selected type of stimulus to the subject M at the time of awakening.

  According to this embodiment, by presenting two or more types of stimuli to the subject M, the wakefulness unit 110 and the sleep state control unit 120 of the sleep device 100 that induces the sleep of the subject are presented to the subject M. Among the started stimuli, the presentation ends in order from the strongest effect of inducing the sleep of the subject M. In general, the stronger the effect of inducing the sleep of the subject M is, the higher the effect of causing the subject M to sleep earlier, but the possibility of inhibiting the sleep of the subject M is also increased. Therefore, the factor that inhibits the sleep of the subject M can be reduced by terminating the stimulus having a strong effect of inducing the sleep of the subject M at an earlier timing. Thereby, it is possible to prevent sleep by the stimulus presented by the subject M, and to shorten the time until falling asleep.

  Moreover, in this embodiment, the stimulus part 130 and the sleep state control part 120 which awaken the subject person M by presenting the stimulus to the subject person M are presented to the subject person M as the subject person M sleeps deeper. Increase the intensity of stimulation. For this reason, it is possible to surely awaken the subject M who is deeply asleep, and to avoid the occurrence of discomfort such as surprise the subject M who is shallowly sleep by sudden stimulus presentation.

  Further, in the present embodiment, the wake-up unit 130 and the sleep state control unit 120 awaken the target person M by presenting two or more types of stimuli to the target person M, and among the stimuli presented to the target person M Then, the presentation starts in order from the strongest effect of awakening the subject M. For this reason, an awakening unit will present in order from the stimulus with the strong effect which awakens the subject person M, and it becomes possible to awaken the subject person M efficiently.

  In the present embodiment, the wake-up part 110 and the sleep state control part 120 are stimuli to be presented to the subject M according to at least one of the sleep depth of the subject M and the response to the stimulus of the subject M. In order to determine at least one of the type and intensity, it is possible to present an appropriate stimulus according to the sleep depth of each individual subject M and the response to the stimulus.

  Moreover, in this embodiment, in order for the wake-up part 130 and the sleep state control part 120 to determine at least one of the kind and intensity | strength of the stimulus shown to the subject person M according to the reaction to the stimulus of the subject person M. It becomes possible to present an appropriate stimulus according to the sleep depth of each individual subject M and the response to the stimulus.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Sleeping device, 20 ... Seat, 22 ... Buttocks heater, 24 ... Foot stool, 26 ... Vibrator, 27 ... Massage roller, 31 ... Speaker, 40 ... Side window, 42 ... Side blind, 50 ... Back window, 52 ... Back Shade, 60 ... lamp, 100 ... sleeping device, 110 ... sleeping part, 120 ... sleep state control part, 122 ... sleep depth estimation part, 124 ... sleep depth control part, 130 ... promotion part.

Claims (5)

By providing the subject with two or more types of stimuli, the sleep unit is provided to induce sleep of the subject,
The sleep unit is a sleep device that finishes presenting in order from a stimulus that has started to be presented to the subject, and has a strong effect of inducing sleep of the subject. A wake-up unit that wakes up the subject by presenting a stimulus to the subject;
The sleep device according to claim 1, wherein the awakening unit increases the intensity of stimulation presented to the subject as the subject sleeps deeper.   The awakening unit awakens the target person by presenting two or more types of stimuli to the target person, and in order of strongest effect to awaken the target person among the stimuli presented to the target person. The sleep device according to claim 2, wherein presentation is started.   The attraction unit determines at least one of a kind and intensity of a stimulus to be presented to the subject according to at least one of a sleep depth of the subject and a response to the stimulus of the subject. Item 4. The sleeping device according to any one of Items 1 to 3.   The sleep device according to claim 2 or 3, wherein the awakening unit determines at least one of a type and intensity of a stimulus to be presented to the subject according to a response to the subject's stimulus.

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