JP2020018679A - Sleep control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sleep control device capable of obtaining a more comfortable wake-up state. SOLUTION: A sleep control device (1) has a heating unit (2) that constitutes a part of bedding and heats a human body, and a value capable of detecting the frequency and / or interval of occurrence of heat mitigation behavior. The humidity sensor 4 and the control unit are provided, and the control unit controls the heating unit (2) to heat the human body before the scheduled wake-up time, and the control unit is the humidity sensor (4). The output of the heating unit (2) is adjusted based on the frequency and / or interval of occurrence of the heat mitigation behavior detected from the output value. [Selection diagram] Fig. 1

Description

  The present invention relates to a sleep control device, and more particularly, to a sleep control device for waking up comfortably.

  While modern people are on a declining trend in sleep time, they are forced to wake up at almost fixed times in the morning to promote social activities. For this reason, many people are forced to get up regardless of their sleep state by being prompted by sound, vibration, or light using an alarm clock or the like. However, such forced wake-up may cause problems such as lack of sleep, sleep inertia, and a decrease in behavior immediately after wake-up.

  The present applicant has filed a patent application for a sleep control system capable of obtaining a comfortable wake-up state prior to the present application in order to improve such a problem when waking up (Patent Document 1). ). In this sleep control system, from 90 to 150 minutes before the scheduled wake-up time to the scheduled wake-up time, the human body is heated at 36 to 41 ° C. to increase the body temperature, thereby awakening and obtaining a comfortable wake-up state. .

JP 2016-19719 A

  However, in the above-described sleep control system, a comfortable wake-up state is obtained by raising the body temperature in an appropriate time zone, but there is still room for improvement.

  An object of one embodiment of the present invention is to realize a sleep control device that can obtain a more comfortable wake-up state.

  In order to solve the above problems, a sleep control device according to one embodiment of the present invention has a heating unit that forms a part of bedding and heats a human body, and an occurrence frequency or an occurrence interval of a heat relaxation action or an interval thereof. A sensor that outputs a value that can detect both, and a control unit, comprising: the control unit controls the heating unit, and heats the human body before the scheduled wake-up time, the control unit, The output of the heating unit is adjusted based on the occurrence frequency or occurrence interval or both of the heat relaxation action detected from the output value of the sensor.

  According to one embodiment of the present invention, a sleep control device capable of obtaining a more comfortable wake-up state can be provided.

1 is a schematic perspective view of a sleep control device according to the present embodiment. It is a block diagram showing composition of each part of the above-mentioned sleep control device. It is the graph which measured the change of the humidity of the space | bedding in bedclothes of the test subject during sleep, the horizontal axis shows the time after going to bed, and the vertical axis | shaft has shown the relative humidity. It is explanatory drawing which shows the coincidence rate of the result of having determined whether or not four test subjects felt heat based on the humidity of the space in bedding, and the result of sensory evaluation. It is a flowchart of the turnover detection processing which detects the turnover from the humidity of the space in the bedding adopted by the sleep control device. It is explanatory drawing which shows the Example of the algorithm which detects a turning over from the humidity of the space in bedding. It is a flow chart for explaining operation of the above-mentioned sleep control device. 6 is a flowchart for explaining the operation of the sleep control device according to the second embodiment.

[Prerequisite technology]
The applicant of the present application includes a heating unit that heats the human body in the bedding, and the heating unit uses the heating unit at a temperature of 36 to 41 ° C. (second time) from the heating start time 90 to 150 minutes before the scheduled wake-up time to the scheduled wake-up time. Temperature), and a sleep control device that does not heat at a temperature higher than 33 ° C. (first temperature) between the time of entering the bed or after the elapse of a certain time after entering the bed and the time of starting the heating was prototyped.

  According to this device, in the time zone of REM sleep before the scheduled wake-up time, such as between the heating start time 90 to 150 minutes before the scheduled wake-up time and the scheduled wake-up time, at a temperature higher than the body temperature of 36 to 41 ° C. Since the human body is heated, the heated human body has a state in which the autonomic nervous system is activated and the blood flow is in a good state, and the heat spreads throughout the human body and the body temperature rises. This is a state suitable for getting up. In other words, according to the present device, during the REM sleep period, the human body can be brought into a state suitable for such wake-up, thereby supporting the user's comfortable wake-up, increasing the arousal level after wake-up, and after wake-up. It becomes possible to make more energy available for activity.

  Here, the configuration is such that heating is not performed at a temperature higher than 33 ° C. during a period other than 90 to 150 minutes before the scheduled wake-up time. This is because the decrease is inhibited and sleep efficiency is deteriorated.

  However, the applicant of the present invention performed a sensory evaluation test of the prototype sleep control device on 10 subjects, and found that two of the subjects felt "hot" at the time of use, and the time was earlier than the scheduled wake-up time. I got the impression that I was awake. A product having such an impression may give some users an unpleasant arousal sensation, and may be a factor that hinders the comfortable wakefulness that is the original effect of the product.

  However, if the output of the heating is suppressed so that the sleeping person who is the user does not feel hot, the degree of the body temperature rise of the sleeping person is also suppressed, and the awakening degree after getting up is suppressed. Therefore, it is necessary to set the heating output to a level that does not feel hot while maintaining a comfortable arousal level of the sleeping person.

  However, the level at which a sleeper feels hot depends on the individual user. In addition, even for the same user, the level at which the user feels hot varies depending on various environmental factors such as the type of the mattress or comforter at bedtime, the type of sleepwear, the temperature and humidity of the sleeping room, and the wall surface temperature of the sleeping room. . Therefore, the optimal heating level cannot be uniquely determined.

  The present applicant has conducted intensive studies so as to be able to obtain a comfortable wake-up state without feeling hot, regardless of individual differences of sleeping persons and various environmental factors. As a result, the applicant of the present application has paid attention to an action of relaxing the body by unconsciously moving the body when a sleeper feels heat while sleeping, and has invented the following sleep control device. The action of relaxing the heat (hereinafter, the action of relaxing the heat) is specifically turning over. Turning over in the present specification includes limb movement for moving limbs.

[Embodiment 1]
A sleep control device 1 according to an embodiment of the present invention will be described with reference to the drawings.

(Schematic configuration of sleep control device 1)
FIG. 1 is a schematic perspective view of a sleep control device 1 according to the present embodiment. As shown in FIG. 1, the sleep control device 1 includes a main body 10 and a controller 3 connected thereto. The main unit 10 includes the heating unit 2 and the humidity sensor 4, and the controller unit 3 accepts all operation instructions in the sleep control device 1.

  The main body 10 is installed, for example, above the mattress 20 and below the human body. In the present embodiment, the main body 10 has a sheet-like base material 11 such as cloth or resin, and a nichrome wire (heating wire) as the heating unit 2 is embedded in the base material 11. The main body 10 has a rectangular shape corresponding to the range from the shoulder opening of the human body to the foot, and the heating unit 2 is also arranged to heat the range from the shoulder opening of the human body to the foot. The main body 10 alone corresponds to bedding. Therefore, it can be said that heating section 2 constitutes a part of the bedding.

  As a method of applying heat to the human body, there is a method of increasing the temperature itself, such as an air conditioner. However, a sleeper feels uncomfortable with the rise in temperature during sleep, which leads to awakening during sleep and lowers the quality of sleep. This is because the heat capacity of the air is small, it only heats a part of the body surface, not the whole body, and despite the fact that the human body is not in a state suitable for getting up, the body surface is warmed and discomfort It is to be awakened. Therefore, it is inappropriate to use an air conditioner or the like as a heating means.

  In contrast, in the present embodiment, at least the heating unit 2 or the heating unit 2 and the main body unit 10 having a heat capacity larger than that of air are in contact with and heated by the human body, so that the entire human body is warmed and the human body wakes up. It is possible to support a comfortable awakening.

  In addition, bringing the heating unit 2 or the heating unit 2 and the main body unit 10 into contact with the human body means not only bringing the heating unit 2 or the main body unit 10 into direct contact with the human body, but also bringing the heating unit 2 or the main body unit 10 into contact with the human body. The case where clothing, sheets, etc. are interposed between them is also included. Also, the case where the heating unit 2 or the main body unit 10 is embedded and installed in the mattress and a batting or the like is interposed between the heating unit 2 and the human body is included. That is, the contact includes a case where a substance is schematically present. Specifically, if the total thickness of clothes, sheets, and the like is a situation in which a substance other than air having a thickness of 1 cm or less is present, the effect of the present invention is produced, but it is preferably 5 mm or less. .

  The humidity sensor 4 detects humidity (relative humidity), and detects humidity in a space located between the mattress and the comforter. Hereinafter, the space located between the mattress and the comforter will be referred to as the bedding interior space. The humidity sensor 4 is provided on the main body 10 together with the heating unit 2, for example. Such a configuration includes a case where the base material 11 is interposed between the human body and the detection unit (not shown) of the humidity sensor 4. In addition, the case where the main body 10 is embedded and installed in the mattress and a batting or the like is interposed between the main body 10 and the human body is also included. That is, the contact includes a case where a substance is schematically present. Specifically, if the total thickness of clothes, sheets, and the like is a situation in which a substance other than air having a thickness of 1 cm or less is present, the effect of the present invention is produced, but it is preferably 5 mm or less. .

  Although the details will be described later, in the present embodiment, the humidity sensor 4 is mounted as a sensor that outputs a value that can detect the turning over of a sleeping person.

  FIG. 2 is a block diagram illustrating a configuration of each unit of the sleep control device 1. The controller unit 3 includes a control circuit (control unit) 5 including a CPU, a drive circuit 6 for driving the heating unit 2 based on information from the control circuit 5, a clock 7 for measuring real time, An input device 8 for inputting a desired heating state and the like, and a display device 9 for displaying setting conditions and the like are provided.

  The control circuit 5 controls the heating unit 2, and specifically controls the output and the operation time of the heating unit 2. The control circuit 5 includes a memory (not shown) for storing setting conditions such as a scheduled wake-up time. The memory, the input unit 8, the display unit 9, and the like constitute a setting unit that receives the setting of the scheduled wake-up time and the desired heating state.

  The control circuit 5 controls the output and operation time of the heating unit 2 to 33 ° C. (first temperature) until a heating start time 90 to 150 minutes before the set scheduled wake-up time, except for a predetermined period at bedtime. Heating at a temperature higher than (temperature) is not performed, and heating for wake-up support is performed at 36 to 41 ° C. (second temperature) from the heating start time. In the present embodiment, the control circuit 5 sets the temperature (default) at the time of heating for assisting wakeup to 40 ° C. The temperature at the time of heating can be changed by inputting a desired heating state. For example, 41 ° C. when “high temperature” is set, 39 ° C. when “medium temperature” is set, and “low temperature” May be set to 37 ° C.

  Further, the control circuit 5 detects the turning of the sleeping person from the change in the humidity of the space in the bedding, and determines whether or not the sleeping person feels hot based on the turning state. When the control circuit 5 determines that the user feels hot, the control circuit 5 adjusts the output of the heating unit 2 so that the heat is reduced. In the present embodiment, as described above, the humidity sensor 4 is mounted as a rollover detection sensor. The control circuit 5 detects the turning over from the detection value of the humidity sensor 4 and determines whether or not the sleeper feels the heat from the turning over state.

(Description of the method of detecting turning over and determining whether or not you are feeling the heat)
A method of detecting turning over from the detected value of the humidity sensor 4 and determining whether the sleeper feels heat from the turning over state will be described with reference to FIGS.

  If the sleeping person does not move inside the bedding (between the mattress and the comforter) without turning over, the humidity in the bedding space gradually increases due to, for example, perspiration (a continuous section of humidity). When a sleeping person turns over, ventilation is performed by changes in the space, changes in the gap between the mattress and the comforter, and air is pushed out, and the humidity in the space in the bedding drops at a stretch (discontinuous humidity occurs). The humidity of the space in the bedding repeats a continuous section in which the humidity gradually changes according to the state of the sleeping person, and a discontinuous occurrence in which the humidity drops at a stretch (in an instant).

  The control circuit 5 regards the occurrence of the discontinuity of the humidity value and the point of inflection as an action to alleviate the heat, that is, “turning over”, and when the occurrence frequency and the occurrence interval satisfy predetermined conditions, the sleeper Is determined to be feeling hot, otherwise it is determined not to be feeling (algorithm for detecting heat).

  FIG. 3 is an example of a graph obtained by actually measuring a change in the humidity of the space in the bedding while the subject is sleeping. The horizontal axis indicates the time after going to bed, and the vertical axis indicates the relative humidity.

  As shown in FIG. 3, the humidity gradually rises with the passage of time (continuous section), falls at a stretch (discontinuous occurrence), rises gradually (continuous section), and drops at a stretch (continuous section). (Discontinuous occurrence). The state in which the humidity gradually rises with the passage of time is the state in which the sleeping person does not move without turning over. The point at which the humidity suddenly decreases during the rise is when the sleeping person turns over and the air in the bedding space is exchanged (ventilation).

  From such a change in the humidity in the bedding space, it can be determined whether or not the user feels the heat based on the occurrence frequency and / or the occurrence interval of the discontinuous occurrence indicating the turning over. Here, the following two methods (judgment method 1) and (judgment method 2) are used as methods having high judgment accuracy. In addition, in addition to this, for example, when the frequency of discontinuity of the humidity value corresponding to turning over is equal to or more than the frequency corresponding to the average interval of turning over, it is determined that the user feels heat. , Etc. may be used.

  (Determination method 1) A sleeper is hot when the interval of discontinuous occurrence of the humidity value corresponding to turning over is shorter than the average interval of turning over for a first predetermined time or less for a first predetermined number of times or more. Can be determined. That is, when it is determined that the interval from the previous turn to the next turn is short, which is equal to or less than the first predetermined time, and the number of times of such a short turn is greater than or equal to the first predetermined number, heat is felt. It is determined that there is.

  (Determination method 2) If the interval between discontinuous occurrences of the humidity value corresponding to turning over is equal to or longer than the second predetermined time equal to or longer than the average interval of turning over, and the second predetermined number of times or more, it is determined that the sleeping person is hot. You can judge that you do not feel it. In other words, when the interval between the previous turning and the next turning is longer than the second predetermined time and the number of times of turning over such a long interval is equal to or more than the second predetermined number, the user does not feel the heat and feel comfortable. Is determined.

  Further, as shown in FIG. 3, when the heating is disclosed, it can be seen that the frequency of occurrence of the discontinuous occurrence section is higher than before the start of the heating, and the occurrence interval is shorter.

  Therefore, in sleep control device 1 of the present embodiment, it is determined whether the sleeping person feels heat by the method (determination method 2) before the start of heating and after the start of heating (determination method 1). ).

  Specifically, before the start of heating, the second predetermined time of (judgment method 2) is set to, for example, “30 minutes”, and the second predetermined number of times is set to “once”. If the interval of discontinuous occurrences is even once, it is determined that the sleep depth is normal and that the user does not feel heat. In other words, before the start of heating, if there is at least one state in which the space between turning over is opened for 30 minutes or more during the measurement period, the user does not feel the heat, and if there is no time, It is determined that heat is felt.

  Here, the reason that the predetermined period before the start of heating is within the predetermined period before the start of heating is that if the bedtime is extremely long, it is not sufficient if it is determined that the interval of discontinuity occurrence of 30 minutes or more is only once and that no heat is felt. This is because In the example of FIG. 3, the period within the predetermined period before the start of heating is two hours before the start of heating.

  The state in which there is no turnover of 30 minutes or more during the predetermined period before the start of heating is a state in which the sleep depth is shallow and the human body is ready to wake up. If you wake up as it is, your sleep time will be shorter. The start of the predetermined period before the start of the heating, that is, the time two hours before the heating start time is the count start time in the flowchart of FIG. 7 described later.

  On the other hand, after the start of heating, the first predetermined time of (judgment method 1) is set to, for example, "10 minutes" and the first predetermined number of times is set to "3 times". Is determined to be large, and it is determined that heat is felt. In other words, if the turnover interval of 10 minutes or less after the start of heating is up to two times, no heat is felt by heating for a predetermined time at the scheduled wake-up time, but three or more times with the turnover interval of 10 minutes or less. The state in which the child turns over is a state in which the user feels the heat by heating to obtain a comfortable wake-up state.

  FIG. 4 is an explanatory diagram showing the coincidence rate between the result of determining whether or not four test subjects feel heat based on the humidity in the bedding space and the result of the sensory evaluation. The count start time is set to 2 hours of the heating start time. Before the start of heating, the second predetermined time of (determination method 2) is, for example, “30 minutes”, and the second predetermined number of times is “once”. After the start of heating, the first predetermined time of (determination method 1) is Is, for example, “10 minutes” and the first predetermined number is “3 times”.

  As shown in FIG. 4, the result of the test A is five times the same among the experiments performed six times, and the result of the test B is the same in all the experiments performed seven times. For subjects C and D, the results of the two experiments out of the three experiments are consistent. By this experiment, it was confirmed that the coincidence rate between the judgment result by the heat judgment algorithm in consideration of the frequency and the interval of the humidity value and the heat relaxation action (= turning over) and the sensory evaluation result was 84%.

  FIG. 5 is a flowchart of a turn-over detection process for detecting a turn over from the humidity in the bedding space employed by the sleep control device 1. As shown in FIG. 5, the control circuit 5 starts a timer (S1), and after 10 minutes elapse (S2), plots a graph with the measured value of the humidity sensor 4 as y and the actual time as x (S3). Next, based on the graph plotted in S3, a logarithmic approximation curve is created with data for the last 10 minutes (third predetermined time) (S4). Then, it is determined whether the data for the next 10 seconds (fourth predetermined time) of the moving average value of the logarithmic approximation curve deviates greatly from the logarithmic approximation curve by 1σ or more (S5). If it is determined in S5 that there is a large deviation, it is determined that the vehicle is turning over (S6), the timer is reset, and the process returns to S1. If it is determined in step S5 that there is no large deviation of 1σ or more, the process proceeds to step S8, and after a lapse of a predetermined time, returns to step S4 to create a logarithmic approximation curve using the data of the last 10 minutes.

  The certain time in S8 can be, for example, 2 minutes. Also, in S2, the object for creating the logarithmic approximation curve is the data for the last 10 minutes. However, the third predetermined time is not limited to the latest 10 minutes, and the logarithmic approximation curve is created from the measured value of the humidity sensor 4. Any time can be used as long as a sufficient data amount can be acquired. In S5, the data for the next 10 seconds is used. However, the fourth predetermined time is not limited to 10 seconds, and may be any interval as long as the humidity sensor 4 can output a measured value with high accuracy.

  FIG. 6 is an explanatory diagram showing an embodiment of an algorithm for detecting turning over from the humidity in the bedding space. FIG. 6A shows the humidity: the actually measured humidity value of the space in the bedding, σ: the moving average-standard deviation for a certain period immediately before, and the judgment index: σ−the actually measured humidity value. The horizontal axis shows the elapsed time after going to bed, and the vertical axis shows the relative humidity. FIG. 6A also shows the heating output. In FIG. 6A, the fixed time is set to 2 minutes, and when the determination index is greater than 10, it is determined that the vehicle is turning over. A turn detection point determined to be a turn is indicated by a thick arrow.

6 (b) and 6 (c) are enlarged views of a part of the time on the time axis of FIG. 6 (a), and FIG. FIG. 6 (c) is an enlarged view showing a part to be determined, and FIG. 6 (c) is an enlarged view showing a part which is a discontinuous occurrence section but is not determined to turn over.
As can be seen from (b) of the figure, when a sufficiently large negative slope occurs in the discontinuous occurrence section than the positive slope of the humidity in the continuous section, the judgment index indicates the maximum value, and when this value is larger than 10, for example, Is determined to be turning over. On the other hand, as can be seen from (c) of the figure, even when a negative slope occurs in the humidity, if the negative slope is not greater than the positive slope of the humidity in the immediately preceding continuous section, Since the determination index does not increase sharply, if this value is, for example, 10 or less, it is determined to be noise.

(Operation of sleep control device 1)
FIG. 7 is a flowchart for explaining the operation of sleep control device 1. As shown in FIG. 7, when the user instructs the sleep control device 1 to start the wake-up support operation by pressing a switch or the like, the control circuit 5 sets the scheduled wake-up time (S11). The scheduled wake-up time is the time stored in the sleep control device 1 previously input or the time newly input.

  Next, the control circuit 5 acquires the current time from the clock 7, and waits until the current time has passed the count start time (S12). When the current time has passed the count start time, the control circuit 5 starts counting (S13).

  When the counting is started, the control circuit 5 determines whether or not a turn is detected (S14). When the control circuit 5 determines that a turn is detected, the control circuit 5 calculates the elapsed time T from the previous turn-over time (turn-over time) to the current turn-over (S15). In the case where the detected turnover is the first time since the counting is started, the elapsed time from the actual time when the counting is started is calculated in S13.

  Next, the control circuit 5 determines whether or not the heating is started (S16). If the heating is not started, the process proceeds to S17. If the heating is started, the process proceeds to S23.

  When the process proceeds to S17 before the start of heating, the control circuit 5 determines whether the current time is from the count start time to the heating start time, and whether the elapsed time T is equal to or longer than the second interval time (long). Here, the second interval time (long) corresponds to the second predetermined time in the above (determination method 2).

  If the control circuit 5 determines YES in S17, it increases (+1) the second counter (length) in S18, and then proceeds to S19. On the other hand, if NO is determined in S17, the control circuit 5 skips S18 and proceeds to S19. Here, the second counter (length) is a counter for measuring the second predetermined number of times in the above (judgment method 2).

  In S19, if the current time is the heating start time, it is determined whether or not it is hot. If the second counter (long) is less than the second predetermined value, it is determined to be "hot"; It is not hot ". In addition, although it described whether it was hot or not hot here, it can be paraphrased that "whether it is comfortable or not comfortable" is determined.

  On the other hand, when the process proceeds to S23 after the start of heating, the control circuit 5 determines whether the current time is from the heating start time to the count end time, and whether the elapsed time T is equal to or less than the first interval time (short). . Here, the first interval time (short) corresponds to the first predetermined time in the above (judgment method 1).

  If the control circuit 5 determines YES in S23, it increases (+1) the first counter (short) in S24, and then proceeds to S25. On the other hand, if NO is determined in S23, the control circuit 5 skips S24 and proceeds to S25. Here, the first counter (short) is a counter that measures the first predetermined number of times in the above (determination method 1).

  In S25, it is determined whether or not it is hot. If the first counter (short) is equal to or more than a first predetermined value, it is determined that the temperature is "hot"; otherwise, it is determined that "it is not hot".

  In S20, the control circuit 5 sets the heating level to "low" when it is determined to be "hot" in S19 or S25, and sets the heating level when it is determined to be "not hot" in S19 or S25. Keep unchanged. When the heating level is set to “low”, the control circuit 5 lowers the heating temperature by the heating unit 2 by, for example, 3 ° C. from the heating temperature before the change. The changed heating temperature needs to be higher than the body temperature for the purpose of warming and awakening the human body. A configuration in which the temperature range to be reduced may be changed in consideration of the difference in the average heat of the user.

  Subsequently, the control circuit 5 turns on the heating unit 2 at the set heating level if the current time is between the heating start time and the heating end time, and turns off the heating unit 2 otherwise. (S21). Next, the control circuit 5 determines whether or not the current time is the heating end time. If the current time is the heating end time, the control circuit 5 ends the processing. If the current time is not the heating end time, the process returns to S14 to detect the next turnover. I do.

(effect)
The applicant of the present application has detected that “the amount of perspiration” is detected from the humidity value of the space in the bedding, and by controlling the heating unit so that the amount of perspiration is suppressed, it is confirmed that the user can be prevented from feeling “hot”. ing.

  However, in this case, it has been found that the humidity of the humidity sensor may not increase even in the case where the sleeping person feels hot during the heating before getting up and wakes up halfway. After investigating the cause, even if the sleeping person feels hot, it may not sweat due to his constitution or physical condition. Was released to the outside air.

  According to the above configuration, based on the interval and / or frequency of discontinuity (occurrence of turning over) of the humidity value in the bedding space while sleeping, the sleeping state of the sleeper (whether or not he / she feels hot) Or not) and adjust the heating temperature (heating level). During heating, when the sleeper feels hot, the frequency of turning over increases, so it is possible to determine whether the sleeper feels hot by the interval and frequency of discontinuity of the humidity value. . In a state where the user feels hot, by lowering the heating level, the user does not feel hot and it is possible to prevent premature awakening.

  In addition, even before the start of heating, if the sleeper sleeps for some reason in a relatively shallow state compared to the normal state and is heated at a normal heating level, the sleeper may feel hot and cause awakening halfway. is there. According to the above configuration, it is possible to detect a state in which the sleeper sleeps lightly based on the interval and / or frequency of turning over, and to prevent the middle awakening.

[Embodiment 2]
Another embodiment of the present invention will be described below. For convenience of description, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

  In the sleep control device 1 according to the first embodiment described above, when it is determined that the temperature is hot (not comfortable) in S19 and S25, the heating level is reduced to “low” once in S20.

  In contrast, in sleep control device 1 of the present embodiment, a plurality of levels of reduction are set, and in S19 and S25, the level is lowered by one each time it is determined to be “hot”. FIG. 8 is a flowchart for explaining the operation of sleep control device 1 of the present embodiment, and differs from FIG. 7 in that S20 'is provided instead of S20.

  In S20 ', when it is determined in S19 or S25 that the temperature is "hot", the control circuit 5 sets the heating level to a level one step lower than the current level. On the other hand, when it is determined in S19 or S25 that the temperature is not hot, the heating level is maintained at the currently set level without changing the setting of the heating level. When the heating level is lowered by one step, the control circuit 5 lowers the heating temperature by the heating unit 2 by, for example, 1 ° C. from the heating temperature before the change. Also in this case, the lowest level heating temperature needs to be higher than the body temperature for the purpose of warming and awakening the human body.

[Embodiment 3]
Another embodiment of the present invention will be described below. For convenience of description, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

  In the sleep control devices 1 of the first and second embodiments described above, the humidity sensor 4 is mounted as a sensor capable of detecting turning over, which is an action of relaxing the heat. However, in the sleep control device 1 of the present embodiment, the humidity control is performed. A temperature sensor is mounted instead of the sensor 4. That is, the temperature sensor detects the temperature of the space in the bedding, and based on the frequency and / or interval of the discontinuity of the temperature value, determines the sleeping state of the sleeper (whether or not he / she feels hot and whether or not he / she is comfortable). ) And adjust the heating level.

  Note that as a sensor capable of detecting turning over, a sensor that directly detects body movement, such as an acceleration sensor or a piezoelectric sensor, can be used. However, in the case of these sensors, even small movements of the limbs are detected, so that the detection accuracy of turning over, which is the action of relaxing the heat, is low.

  On the other hand, since the humidity sensor and the temperature sensor detect the turning over by discontinuous detection of the humidity data or the temperature data, the humidity sensor and the temperature sensor directly take action to reduce the heat when the humidity or the temperature in the bedding increases due to sweat caused by the heat. , And can be detected with high accuracy in principle. In particular, the humidity greatly varies due to the relaxation action of the heat than the temperature, and thus can be detected with higher accuracy.

[Summary]
The sleep control device 1 according to the first aspect of the present invention includes a heating unit 2 that forms a part of the bedding and heats the human body, and a value that can detect the occurrence frequency or the occurrence interval of the heat relaxation action or both. An output sensor (humidity sensor 4); and a control unit (control circuit 5). The control unit controls the heating unit to heat the human body before the scheduled wake-up time, and The unit adjusts an output of the heating unit based on an occurrence frequency and / or an occurrence interval of a heat relaxation action detected from an output value of the sensor.

  In the sleep control device 1 according to the second aspect of the present invention, in the first aspect, the sensor is a humidity sensor that detects a humidity in a space in the bedding, and the control unit is configured to determine a frequency of discontinuous occurrence of a humidity value. Alternatively, the output of the heating unit may be adjusted based on the interval or both.

  In the sleep control device 1 according to the third aspect of the present invention, in the second aspect, the control unit may adjust an output of the heating unit based on both a frequency and an interval of discontinuous occurrence of a humidity value, and The unit is configured to reduce the output of the heating unit when the interval of the discontinuous occurrence of the humidity value is shorter than the average interval of the rolling over for the first predetermined time or less and the first predetermined number of times or more. You can also.

  In the sleep control device 1 according to aspect 4 of the present invention, in the aspect 2, the control unit adjusts an output of the heating unit based on both a frequency and an interval of discontinuous occurrence of a humidity value, and The unit is configured to reduce the output of the heating unit when the interval of the discontinuous occurrence of the humidity value is less than the second predetermined number of times for the second predetermined time or more that is equal to or longer than the average interval of the turnover occurrence. You can also.

  The method for determining a behavior of relaxing heat during bedtime according to an aspect 5 of the present invention measures a humidity value of a space in the bedding, and calculates a logarithmic approximation curve of data of the measured humidity value data for the latest third predetermined time. In the case where the data for the fourth predetermined time following the moving average value of the logarithmic approximation curve is created and separated in a direction smaller than the logarithmic approximation curve by 1σ or more, it is assumed that the action of relaxing the heat during bedtime has been performed. It is characterized by determining.

  The present invention is not limited to the embodiments described above, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

Reference Signs List 1 sleep control device 2 heating unit 3 controller unit 4 humidity sensor (sensor)
5 control circuit (control unit)
6 drive circuit 7 clock 8 input device 9 display device 10 main body 20 mattress

Claims (5)

A heating unit that forms part of the bedding and heats the human body;
A sensor that outputs a value that can detect the occurrence frequency or occurrence interval or both of the heat relaxation action,
And a control unit,
The control unit controls the heating unit to heat the human body before the scheduled wake-up time,
The sleep control device, wherein the control unit adjusts an output of the heating unit based on an occurrence frequency and / or an occurrence interval of a heat relaxation action detected from an output value of the sensor. The sensor is a humidity sensor that detects the humidity of the space in the bedding,
The sleep control device according to claim 1, wherein the control unit adjusts an output of the heating unit based on a frequency and / or an interval of discontinuous occurrence of a humidity value. The control unit adjusts the output of the heating unit based on both the frequency and the interval of discontinuous occurrence of the humidity value,
The control unit may reduce the output of the heating unit when the interval of the discontinuous occurrence of the humidity value is equal to or longer than the first predetermined number of times that is equal to or less than the first predetermined time shorter than the average interval of the occurrence of rolling over. The sleep control device according to claim 2, wherein: The control unit adjusts the output of the heating unit based on both the frequency and the interval of discontinuous occurrence of the humidity value,
The control unit may reduce the output of the heating unit when the interval of the discontinuous occurrence of the humidity value is less than the second predetermined number of times for a second predetermined time or more that is equal to or longer than the average interval of the turnover occurrence. The sleep control device according to claim 2, wherein:   The humidity value of the space in the bedding is measured, and a logarithmic approximation curve of data of the measured humidity value data for the latest third predetermined time is created, and the data of the fourth predetermined time following the moving average value of the logarithmic approximation curve is obtained. Determining that the action of alleviating the heat during bedtime has been performed when the user is away from the logarithmic approximation curve in a direction smaller by 1σ or more.

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