JP5155805B2 - Sleep control device - Google Patents

Description

  The present invention relates to a sleep control device for controlling a user's sleep state, and more particularly to a sleep control device for controlling a short nap while taking into account effects obtained by sleep.

  2. Description of the Related Art Conventionally, there is known an environmental temperature control device that enables a user to obtain a deep sleep efficiently by controlling the environmental temperature in accordance with the sleep rhythm of the user (see, for example, Patent Document 1). .

In addition, by measuring a physiological signal of a user during sleep using a non-contact type sensor and controlling sleep environment such as sound, lighting, and temperature, a deep sleep and awake sleep induction feedback control are performed. An awakening induction device is known (for example, refer to Patent Document 2).
JP 2005-296177 A JP 2007-98138 A

  However, all of the devices described in the above-mentioned patent documents are intended to make the user take a deep sleep, and in order to perform a specific action, aim to eliminate drowsiness and recover from fatigue by performing a short nap. It is not suitable for the purpose.

  In view of the above-described points, an object of the present invention is to provide a sleep control apparatus suitable for eliminating drowsiness and recovering from fatigue by taking a short nap.

  In order to achieve the above-mentioned object, the first invention is a sleep control device that controls a user's sleep state according to a purpose of nap, a nap purpose determination means for determining a user's nap purpose, and a user's sleep A sleep condition determining means for determining a stage, a stimulus applying means for giving a predetermined stimulus to a user according to a sleep stage determined by the sleep stage determining means, and an awakening condition based on the purpose of napping determined by the purpose of napping purpose determining Awakening condition determining means for determining the sleep stage, and a sleep control means for providing a stimulus for awakening the user by the stimulus applying means when the awakening condition is satisfied while maintaining the user's sleep stage at a predetermined sleep stage, It is characterized by providing.

  Moreover, 2nd invention is the sleep control apparatus which concerns on 1st invention, Comprising: The said wakefulness condition determination means wakes up the accumulation time of a predetermined sleep stage according to the purpose of nap determined by the said nap purpose determination means It is determined as a condition, and when the accumulated time of the predetermined sleep stage reaches a threshold value, the sleep control unit provides a stimulus for awakening the user by the stimulus applying unit.

  Further, the third invention is the sleep control device according to the first invention, wherein the awakening condition determination means determines the cumulative number of sleep spindles according to the purpose of the nap determined by the nap purpose determination means. The sleep control means gives a stimulus for awakening the user by the stimulus giving means when the cumulative number of sleep spindles reaches a threshold value.

  According to a fourth aspect of the present invention, there is provided the sleep control device according to any one of the first to third aspects, wherein the nap purpose determination means determines a user's nap purpose based on a user input. To do.

  The fifth invention is the sleep control device according to any one of the first to fourth inventions, wherein the sleep state recording means for recording the sleep state of the napping user for each user, and the napping environment It is characterized by comprising environmental state recording means for recording the state for each user, and nap evaluation recording means for recording for each user the evaluation of the user after taking a nap.

  With the above-described means, the present invention can provide a sleep control apparatus suitable for relieving drowsiness and recovering from fatigue by taking a short nap.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram illustrating a configuration example of a sleep control device 100 according to the present invention. The sleep control device 100 is, for example, a device mounted on a vehicle, and includes a control unit 1, an operation input unit 20, a living body. The information detection unit 21, the personal authentication unit 22, the environment information detection unit 23, the storage unit 3, the stimulus applying unit 40, and the display unit 41 are included as components, and each component is a CAN (Controller Area Network) or LIN (Local Interconnect). Network) or other in-vehicle LAN.

  The control unit 1 is a computer including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and includes an operation input unit 20, a biometric information detection unit 21, a personal authentication unit 22, and A predetermined calculation is executed with reference to the storage unit 3 in response to an input from the environment information detection unit 23, and the calculation result is output to the stimulus applying unit 40 and the display unit 41.

  The control unit 1 also includes a nap purpose determination unit 10, a sleep stage determination unit 11, an awakening condition determination unit 12, a sleep control unit 13, a sleep state recording unit 14, an environmental state recording unit 15, and a nap evaluation recording unit 16. While storing the corresponding program in the ROM, the CPU executes the processing corresponding to each means.

  The operation input unit 20 is a person boarding the vehicle (a driver who is on the way to the destination and desires a short nap, hereinafter referred to as a “passenger”. Note that driving is resumed after the nap. For example, a touch panel, a joystick, a remote controller, an escutcheon button, a microphone, etc., and a nap by a passenger with respect to the sleep control device 100. It is used for inputting purposes and the like and information input by the passenger is output to the control unit 1.

  The biological information detection unit 21 is information on the passenger's biological information (heart rate, brain wave, blood pressure, respiration, limb movement, jaw movement, eye movement, electrocardiogram, oxygen saturation, chest wall movement, abdominal wall movement, body position, etc.). An apparatus for non-invasive detection, for example, a heart rate sensor, which is built in a backrest portion of a driver's seat and continuously detects the heart rate of a passenger who takes a nap in the driver's seat with respect to the control unit 1 Output.

  The biometric information detection unit 21 includes a piezoelectric element embedded in the seat part of the driver's seat and the surface of the steering wheel, and allows the control unit 1 to determine the position of the passenger based on the output of the piezoelectric element. .

  The personal authentication unit 22 is a device for authenticating an individual, for example, a biometric authentication device using a fingerprint, a voiceprint, a vein pattern, or an iris, or authentication using input of a personal identification number or reading of a license It is a device, performs personal authentication in response to a request from the control unit 1, and outputs the authentication result to the control unit 1.

  The environmental information detection unit 23 is a device for detecting environmental information (temperature, humidity, brightness, time, noise, etc.) around the vehicle or in the vehicle interior, and is installed on the surface of the vehicle body or in the vehicle interior, for example. There are a thermometer, a hygrometer, a noise meter, an illuminometer, and the like, and the detected value is output to the control unit 1.

  The storage unit 3 is a device for storing various types of information. For example, the storage unit 3 is a rewritable storage device such as a hard disk or a DVD (Digital Versatile Disk), and includes a nap information database 30 (hereinafter, “nap information DB 30”). And the awakening condition table 31 are stored.

  The nap information DB 30 is a database for systematically recording nap information. For example, the values (primary data) detected by the biological information detection unit 21 and the environment information detection unit 23 may be recorded for each passenger. In addition, the value obtained by analyzing the primary data (secondary data obtained by processing the primary data such as average value, maximum value, minimum value, etc.) is recorded instead of or in addition to the primary data. Also good.

  The awakening condition table 31 is a table that stores awakening conditions for determining the timing of awakening a sleeping passenger, and is preferably prepared for each passenger.

  FIG. 2 is a diagram illustrating a configuration example of the awakening condition table 31. The awakening condition table 31 includes three awakening conditions for each of the three nap purposes (reducing drowsiness, reducing fatigue, or improving work performance). (A cumulative time of a predetermined sleep stage (for example, “sleep stage 2”), a cumulative number of sleep spindles, or an appearance interval of sleep spindles) is defined, for example, sleepiness reduction for the purpose of nap When is selected, it means that 6 minutes is set as the threshold for the cumulative time of the predetermined sleep stage.

  Such differences in wakefulness conditions are based on the view that the quality and quantity of sleep required varies depending on the purpose of nap. Note that the awakening condition may be a combination of a plurality of conditions (referred to as an AND condition or an OR condition), and may be changed according to the environmental state.

  The nap purpose may be selected and input by the passenger via the operation input unit 20 as will be described later. The biological information of the passenger before sleep detected by the biological information detection unit 21 (for example, blinking) , The seating pressure distribution change, etc.), the environmental state, the continuous operation time, or the driving state (for example, including the use status of the accelerator, the standard deviation of the steering wobbling amount, etc.). May be automatically selected and determined.

  Here, the “sleep stage” is an index indicating the depth of sleep, and has, for example, four stages “sleep stage 1” to “sleep stage 4” classified based on the waveform of the electroencephalogram. It means that the sleep becomes deeper as it increases from "sleep stage 1" to "sleep stage 4".

  Further, the “sleep spindle wave” is a 12-14 Hz wave seen in the brain wave during non-REM sleep, and “sleep stage 2” is determined by its appearance.

  The awakening condition is a power spectrum of various waves constituting the electroencephalogram (for example, sleep spindle wave, slow wave (delta wave appearing in “sleep stage 3” or “sleep stage 4”), etc.). May be determined based on

  The stimulus applying unit 40 is a device for applying a physical stimulus to the occupant. For example, in response to a control signal output from the control unit 1, a sound output from a vehicle-mounted speaker built in the headrest unit. Is applied to the passenger sleeping in the driver's seat, such as a visual stimulus by light emitted from the vehicle-mounted lighting device, or a tactile stimulus by vibration output from a vibrator installed in the driver's seat.

  The display unit 41 is a device for displaying various types of information. For example, the display unit 41 is a liquid crystal display or the like, and displays various types of information according to a control signal output from the control unit 1.

  Next, various units included in the control unit 1 will be described.

  The nap purpose determination means 10 is a means for grasping what the effect of the nap desired by the passenger is, for example, three nap purposes (reducing drowsiness, reducing feeling of fatigue, and improving work results) .)) Is displayed on the display unit 41 (hereinafter referred to as “nap purpose determination screen”), and any one of the three software buttons is selected via the operation input unit 20. Let the passenger choose.

  Further, the nap purpose determination means 10 displays an indirect question (for example, “How is your physical condition?” Or “There is drowsiness) in addition to displaying the software button and selecting the nap purpose directly as described above. Is displayed on the display unit 41 as text, and the passenger is allowed to answer (for example, answer at a rate of 0 to 100%) to determine the purpose of nap (for example, If the answer to the question “Do you have sleepiness?” Is 80%, it is determined that the purpose of nap is “relieving sleepiness”.)

  Further, the nap purpose determination means 10 automatically selects the nap purpose most suitable for the passenger based on the behavior of the driving passenger, the driving operation content, the destination set in the navigation system, the desired arrival time, and the like. It may be determined.

  The nap purpose determination means 10 may output voice information from the voice output unit instead of the display unit 41 or in addition to the display unit 41 to allow the passenger to select the nap purpose.

  The sleep stage determination means 11 is a means for determining the sleep stage of the occupant during sleep. For example, the sleep stage determination section 11 determines the sleep stage of the occupant based on the output of the biological information detection unit 21. This determination is ideally performed while continuously detecting the brain wave of the passenger, but instead it is performed by continuously detecting heart rate, breathing, eye movement, body temperature, skin potential, etc. May be.

  Further, when the sleep stage determination means 11 detects a sleep spindle wave or K decoding (a combination of a large slow wave and a sleep spindle wave) in the brain wave of the passenger, the eye movement is slow in the electrooculogram. When the detection of (SEM) is stopped, or when the variation in respiratory amplitude falls below a predetermined value, or when the transition from abdominal breathing to thoracic breathing is detected, It is determined that the process has shifted to “Step 2”.

  The awakening condition determination means 12 is a means for determining a condition (awakening condition) for awakening a sleeping passenger. For example, a physical condition by the stimulus imparting unit 40 to awaken a sleeping passenger. Determine when to apply the stimulus to the passenger.

  First, the awakening condition determination unit 12 displays a text message “I will authenticate the passenger” on the display unit 41, and prompts the passenger to press the finger against the in-vehicle fingerprint authentication device. In addition, when authentication is already performed at the time of boarding etc., the awakening condition determination means 12 may be made to use the authentication result as it is.

  Thereafter, the awakening condition determination means 12 searches the awakening condition table 31 (FIG. 2) of the storage unit 3 using the value of the purpose of nap determined by the nap purpose determination means 10 as a key item, and determines the awakening condition. Note that the awakening condition table 31 is prepared for each passenger, and the awakening condition determining means 12 refers to the awakening condition table 31 corresponding to each passenger based on the authentication result of the personal authentication unit 22.

In addition, the awakening condition determining means 12 may determine that the value T expressed by, for example, T = W ₁ · S ₁ + W ₂ · S ₂ + W ₃ · S ₃ + W ₄ · S ₄ −W _W · S _W May be awakening condition. W _{1 to} W ₄ are weighting coefficients for each sleep stage, and S _{1 to} S ₄ are cumulative times of each sleep stage. W _W and S _W are weights for the awakening stage and cumulative time of the awakening stage after starting nap, respectively. Incidentally, W ₁ to _W-4 and W _W may be changed as needed.

  The sleep control means 13 is a means for controlling the sleep of the passenger. For example, while the sleep stage is continuously determined by the sleep stage determination means 11, the sleep stage is maintained at "sleep stage 2". As described above, when it is determined that the current sleep stage is “sleep stage 3” or “sleep stage 4”, a control signal is transmitted to the stimulus applying unit 40 to lower (shallow) the sleep stage of the passenger. Appropriate sleep (a stimulus that does not awaken the occupant) or a sleep environment suitable for lowering the sleep stage of the occupant.

  On the other hand, the sleep control means 13 transmits a control signal to the stimulus applying unit 40 when it is determined that the passenger is still in an awake state or the current sleep stage is “sleep stage 1”. Appropriate stimulation for increasing (deepening) the sleep stage of the passenger is applied, or a sleep environment suitable for increasing the sleep stage of the passenger is prepared.

  Note that the sleep control means 13 does not transmit a control signal to the stimulus applying unit 40 (without giving a stimulus to the passenger) when it is determined that the current sleep stage is “sleep stage 2”. To maintain the sleep environment at that time.

  Further, the sleep control means 13 monitors whether or not the awakening condition determined by the awakening condition determination means 12 is satisfied while maintaining the sleep stage of the passenger at “sleep stage 2”, and the awakening condition is satisfied. If it is determined that the control signal is transmitted, a control signal is transmitted to the stimulus applying unit 40 to apply a stimulus for awakening the passenger.

  The sleep state recording unit 14 is a unit for recording the sleep state of the occupant, and continuously records, for example, the transition of the sleep stage of the occupant determined based on the output of the biological information detection unit 21. The control unit 1 can analyze the accumulated time, duration, interruption time, etc. for each sleep stage.

  The sleep state recording means 14 may continuously record the brain waves of the passenger so that the control unit 1 can analyze the cumulative number of sleep spindle waves, the appearance interval, and the like.

  The sleep control unit 13 determines whether or not the awakening condition is satisfied based on various information recorded by the sleep state recording unit 14 and analyzed by the control unit 1.

  The environmental state recording unit 15 is a unit for recording an environmental state around the vehicle or in the passenger compartment. For example, based on the output of the environmental information detection unit 23, the temperature, humidity, noise, etc. in the passenger compartment are recorded as a sleep state recording unit. It records continuously, correlating with 14 recording results, and enables the control part 1 to analyze the influence which these environmental states have on a passenger's sleep state.

  The nap evaluation recording means 16 is a means for recording an evaluation (achievement degree of the purpose of nap) by the passenger who has awakened from the nap, for example, the passenger takes a nap based on the output of the biometric information detection unit 21. When the awakening is detected, a screen (hereinafter referred to as a “nap evaluation screen”) for causing the passenger to input the achievement level of the purpose of nap is displayed on the display unit 41, and 0-100% Let them answer the degree of achievement.

  When the achievement level is input via the operation input unit 20, the nap evaluation recording unit 16 records the input result in the nap information DB 30, and the control unit 1 selects the passenger based on the recording result. It is possible to analyze whether or not the relationship between the purpose of taking a nap and the threshold value of the wakefulness condition stored in the wakefulness condition table 31 is appropriate, and adjust the threshold value.

  In addition, the control unit 1 refers to the nap information DB 30 in the storage unit 3 to realize the purpose of nap based on the past nap information recorded by the sleep state recording unit 14 and the environmental state recording unit 15. The required nap time can be predicted and displayed on the display unit 41 before the nap starts.

  As a result, the passenger can know in advance the nap time required for the purpose of nap that he / she intends to achieve, and whether he / she should take a nap while taking into account the arrival time at the destination and future traffic conditions. You will be able to decide.

  Next, a process in which the sleep control device 100 controls the sleep of the passenger according to the purpose of nap (hereinafter referred to as “nap control process”) will be described with reference to FIG. Note that FIG. 3 is a flowchart showing the flow of the nap control process, which is executed only when the vehicle is in a stopped state, or when a predetermined start condition is satisfied. Is done.

  First, the control unit 1 displays a text message “Please press your finger against the fingerprint authentication device” on the display unit 41 and activates the fingerprint authentication device which is the personal authentication unit 22.

  The fingerprint authentication device authenticates the passenger based on the read fingerprint and outputs the authentication result to the control unit 1 (step S1).

  Thereafter, the control unit 1 causes the nap purpose determination unit 10 to display a nap purpose determination screen on the display unit 41, and allows the passenger to input what effect the user wants to obtain by nap. The nap purpose determination screen includes three software button displays of “reducing drowsiness”, “reducing fatigue”, and “improvement of work performance”, and the nap purpose determination means 10 is a passenger through the touch panel which is the operation input unit 20. In response to the touch input, it is determined which of the three nap purposes is (step S2). In this example, it is assumed that the passenger has selected “reducing drowsiness” as the purpose of nap.

  Thereafter, the control unit 1 refers to the awakening condition table 31 (FIG. 2) corresponding to the passenger by the awakening condition determining means 12 and accumulates the awakening conditions (in this example, “sleep stage 2”) that match the purpose of nap. (Awakening condition is that time reaches 6 minutes) (step S3).

  At this time, the control unit 1 reads the past nap information corresponding to the passenger from the nap information DB 30 and classifies the nap information according to the environmental state at the time of nap (for example, in an environmental state similar to the current environmental state). The information about the nap is extracted.), The average value of the time required for the passenger to reach “sleep stage 2” after closing his eyes, and the accumulated time of “sleep stage 2” is 6 minutes. The average value and the like of the time required for the above are extracted, and the time required for performing a desired nap in the current environmental state is predicted and presented on the display unit 41.

  Note that the control unit 1 predicts the time required to perform a desired nap in the current environmental state based on information prepared in advance even when there is no past nap information corresponding to the passenger. And presented on the display unit 41.

  At this point, the passenger takes a nap as presented by the sleep control device 100 or takes a nap while taking into account the presented predicted time, the time at which the user must arrive at the destination, the subsequent traffic jam prediction, and the like. It is possible to select whether to change the purpose or to continue driving without taking a nap. This selection is performed by the same method as that used in the nap purpose determination screen.

  When the passenger does not select to take a nap as shown, for example, when the passenger desires a nap time shorter than the presented nap time, the control unit 1 determines that “it suits the purpose of nap. A warning message such as “There is a possibility that the sleep effect may not be obtained” is displayed on the display unit 41.

  When the passenger chooses to take a nap as shown, the control unit 1 activates the heart rate sensor embedded in the driver's seat, which is the biological information detection unit 21, by the sleep control means 13, and the heart rate of the passenger Monitoring is started (step S4), and the determination of the current sleep stage SD based on the transition of the heart rate by the sleep stage determination means 11 is started.

  At this time, the control unit 1 starts recording the sleep state in the nap information DB 30 by the sleep state recording unit 14 and recording the environmental state in the nap information DB 30 by the environmental state recording unit 15. This is for use in analysis of future nap information.

  Thereafter, the control unit 1 determines whether the current sleep stage SD determined by the sleep stage determination unit 11 matches a predetermined sleep stage T1 (in this example, “sleep stage 2”) (step S5). ).

  When it is determined that the current sleep stage SD is in a deeper sleep stage than the predetermined sleep stage T1 (SD> T1), the control unit 1 activates the stimulus imparting unit 40 by the sleep control unit 13 and performs predetermined sleep. Appropriate stimulation is given to the passenger so as not to enter the sleep stage deeper than the stage T1 and to awaken the passenger (step S6). The stimulus in this case may be any of music, smell, heat, massage, acupuncture, light or vibration. Note that the control unit 1 may adjust the temperature or humidity in the passenger compartment with a car air conditioner to create an environmental state suitable for shifting the sleep stage to a shallower sleep stage.

  In addition, when it is determined that the current sleep stage SD is in a sleep stage shallower than the predetermined sleep stage T1 (SD <T1), the control unit 1 does not activate the stimulus imparting unit 40 and does not activate the passenger. It may be possible to prevent the sleep stage from deepening, or the stimulus imparting unit 40 may be activated to actively give a comfortable stimulus for deepening the sleep stage of the passenger. . Note that the control unit 1 may create an environmental state suitable for deepening the sleep stage by adjusting the temperature or humidity of the passenger compartment with a car air conditioner.

  On the other hand, when it is determined that the current sleep stage SD is the predetermined sleep stage T1 (SD = T1), the control unit 1 starts from the determination time of the previous step S5 to the determination time of the current step S5. Time (determination interval) is added to the accumulated time AT (step S7).

  Thereafter, the control unit 1 compares the accumulated time AT with the threshold value T2 by the awakening condition determining means 12 (step S8), and when it is determined that the accumulated time AT is less than the threshold value T2 (AT <T2), it is still If the awakening condition is not satisfied, the process from step S5 is repeated. On the other hand, if it is determined that the accumulated time AT has reached the threshold value T2 (AT ≧ T2), the sleep state is assumed that the awakening condition is satisfied. The stimulus applying unit 40 is activated by the control means 13 to apply a stimulus for awakening the passenger (step S9).

  Then, after detecting that the passenger has awakened based on the output of the heart rate sensor by the nap evaluation recording unit 16, the control unit 1 displays the nap evaluation screen on the display unit 41 and before taking a nap. The degree of achievement (satisfaction) for the purpose of nap selected by the passenger is made to be input to the passenger via the touch panel (step S10). This evaluation is performed by a method similar to the method in the nap purpose determination screen, and is performed, for example, by causing the passenger to select one of 10 levels of satisfaction.

  With the above configuration, the sleep control device 100 controls the sleep of the passenger so as to continue the shallow sleep stage for a necessary and sufficient time according to the purpose of the passenger's nap, and thus sleep inertia (after waking up) Before the passenger takes a nap without causing sleepiness due to the effect of sleep) or causing a situation in which work performance is reduced. The desired nap can be achieved as desired, and the passenger's satisfaction can be improved.

  In addition, the sleep control device 100 allows the passenger to take a nap that is necessary and sufficient to satisfy the passenger's purpose of taking a nap, so that he / she feels sleepy but does not have time to take a nap slowly. You can flexibly deal with situations and situations where you don't want to recover from fatigue, but you want to get rid of sleepiness. Can be prevented.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, the sleep control device 100 is intended for a vehicle occupant who needs to resume driving after taking a nap, but continues to work without being able to take sufficient sleep time. It is also suitable for use by medical personnel who need to take a nap using a short break.

It is a block diagram which shows the structural example of the sleep control apparatus which concerns on this invention. It is a figure which shows the structural example of an awakening condition table. It is a flowchart which shows the flow of a nap control process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control part 3 Memory | storage part 10 Nap purpose determination means 11 Sleep stage determination means 12 Awakening condition determination means 13 Sleep control means 14 Sleep state recording means 15 Environmental state recording means 16 Nap evaluation recording means 20 Operation input part 21 Biometric information detection part 22 Personal authentication unit 23 Environmental information detection unit 30 Nap information database 31 Awakening condition table 40 Stimulation unit 41 Display unit 100 Sleep control device

Claims (5)

A sleep control device that determines a user's sleep stage and controls the user's sleep state according to the purpose of nap by giving a predetermined stimulus to the user according to the determined sleep stage ,
A nap purpose determination means for determining a user's nap purpose based on the biological information, environmental state, continuous driving time, or driving state of the passenger before sleeping ;
And arousal condition determining means for determining the awakening conditions based on the previous Symbol nap objective determination means is determined nap purpose,
While maintaining the user's sleep stage to a predetermined sleep stage, when the awakening condition is satisfied, and a sleep control means for applying a stimulus for waking the User chromatography THE,
The awakening condition is determined using a cumulative time of a predetermined sleep stage, a cumulative number of sleep spindles, an appearance interval of sleep spindles, or a combination thereof,
The purpose of nap includes sleepiness reduction, fatigue reduction, and work performance improvement,
A sleep control device characterized by that. The awakening condition determining means determines the accumulated time of a predetermined sleep stage as the awakening condition according to the purpose of the nap determined by the nap purpose determining means.
The sleep control means, the cumulative time of the predetermined sleep stage is when the threshold is reached, gives a stimulus for waking the User chromatography THE,
The sleep control apparatus according to claim 1. The awakening condition determining means determines the cumulative number of sleep spindle waves as the awakening condition according to the purpose of nap determined by the nap purpose determining means,
The sleep control unit, when the cumulative number of the sleep spindles has reached the threshold, giving a stimulus for waking the User chromatography THE,
The sleep control apparatus according to claim 1. The nap purpose determination means determines a user's nap purpose based on a user input.
The sleep control device according to any one of claims 1 to 3, wherein Sleep state recording means for recording the sleep state of the user who is taking a nap for each user;
Environmental status recording means for recording the environmental status of a nap for each user;
A nap evaluation recording means for recording, for each user, an evaluation for a nap by a user after waking up from a nap;
The sleep control device according to any one of claims 1 to 4, further comprising:

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