JP2009264704A - Air conditioning control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system can achieve sleeping environment optimal for a sleeping person. <P>SOLUTION: The air conditioning system (1) is provided with an air conditioner (10) for performing air conditioning inside a room, a heart beat detection part for measuring fluctuation of the heart rate of the sleeping person, and a circuit unit (30) for controlling the air conditioner (10). The circuit unit (30) performs control to increase set temperature of the air conditioner (10) along with increase in the heart rate measured by the heart beat detection part and to lower the set temperature of the air conditioner (10) along with decline in the heart rate measured by the heart beat detection part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioning control system, and more particularly to an air conditioning control system that improves the sleep environment of a sleeping person.

  Focusing on the rhythm (circadian rhythm) created by the body clock, the deep body temperature rises in the morning, while the human body becomes active when the deep body temperature goes down at night. Conventionally, a temperature control device that controls the environmental temperature is known. In this type of apparatus, temperature control is usually performed based on a predetermined time or a predetermined time measured in advance. Specifically, this type of device lowers the room temperature until a predetermined time elapses (or reaches a predetermined time) after the sleeper falls asleep, while the predetermined time elapses (or the predetermined time). After the time has come, many of them perform so-called V-shaped temperature control that raises the temperature in the room.

For example, Patent Document 1 proposes a temperature control device that measures the time dependency of sleep depth in advance and controls the environmental temperature based on the time dependency. This temperature control device measures in advance the interval from when the environmental temperature is raised to when the body temperature rises as a predetermined period, so as to increase the environmental temperature from a time that is longer than the predetermined period from the REM period. It has become. Accordingly, when the sleeping person is awakened in the REM period, a smooth awakening can be promoted with an increase in the body temperature of the sleeping person.
JP 2005-296177 A

  By the way, in the said conventional temperature control apparatus, since V-shaped temperature control is performed based on the predetermined time or predetermined time measured beforehand, there exist the following problems.

  That is, in the control to increase the environmental temperature after a predetermined period from the time of sleep, for example, when a sleeper who stays up at night wakes up at the same time as usual by the action of the biological clock, that is, when the sleep time is shorter than the predetermined period The environmental temperature does not increase during the deep body temperature rise period.

  In addition, in the control for setting the scheduled wake-up time from the past data and increasing the environmental temperature at a predetermined time before the scheduled wake-up time, for example, when a sleeper wakes up earlier than usual, in the deep body temperature rise period There is even a risk of lowering the set temperature.

  In this way, when the bedtime or sleep time of the sleeper is irregular, there is a large difference between the time when the deep body temperature starts to rise according to the circadian rhythm and the time when the environmental temperature starts to rise by the temperature control device. May cause adverse effects on deep sleep and smooth awakening.

  In order to solve such a problem, for example, it is conceivable to control the environmental temperature based on the deep body temperature measured in real time. However, in order to measure the deep body temperature, it is necessary to measure the oral temperature, the rectal temperature, and the like. Yes, it is difficult to measure these temperatures continuously during sleep.

  The present invention has been made in view of such points, and the object of the present invention is to provide an optimal sleeping environment for a sleeper by changing the temperature in the room so as to match the change in the body temperature of the sleeper. The object is to provide an air conditioning control system that can be realized.

  The inventors of the present application have made extensive studies in order to realize temperature control that can follow fluctuations in deep body temperature due to circadian rhythm, and as a result, have found that there is a correlation between fluctuations in deep body temperature and fluctuations in heart rate. To achieve the present invention. The present invention makes it possible to control the temperature so as to be able to follow the change in the body temperature of the sleeper by changing the set temperature of the air conditioning means in accordance with the change in the heart rate of the sleeper.

  Specifically, the air conditioning control system of the first invention includes an air conditioning means (10) for air conditioning the room, and a heart rate detection means (32) for detecting fluctuations in the heart rate of a sleeping person sleeping in the room. The set temperature of the air conditioning means (10) is increased according to the increase in the heart rate detected by the heart rate detection means (32), while the decrease in the heart rate detected by the heart rate detection means (32) Control means (30) for controlling to lower the set temperature of the air conditioning means (10) is provided.

  In the first aspect of the invention, the heart rate detecting means (32) measures the fluctuation of the heart rate having a correlation with the fluctuation of the deep body temperature, for example, by measuring the body movement of the sleeping person. This heart rate is the number of times the heart beats in order to pump out blood in one minute, and the unit is bpm (beats per minute).

  The control means (30) raises the set temperature of the air conditioning means (10) according to the increase in the heart rate measured by the heart rate detection means (32), while the heart rate detected by the heart rate detection means (32). The set temperature of the air conditioning means (10) is lowered as the number decreases. That is, the normal body temperature of a sleeper gradually decreases after falling asleep, reaches a minimum temperature at dawn, and then increases. Therefore, the control means (30) lowers the room temperature until dawn after falling asleep. Thereafter, a substantially V-shaped temperature control is performed to raise the room temperature until the user gets up.

  According to a second aspect of the present invention, in the air conditioning control system according to the first aspect of the invention, the control means (30) causes the fluctuation of the moving average value per predetermined time of the heart rate detected by the heart rate detection means (32). Accordingly, the set temperature of the air conditioning means (10) is varied.

  In the second invention, the control means (30) is not the measured heart rate that fluctuates drastically, but, for example, the air conditioning means (10) so as to follow the fluctuation of the moving average value per predetermined time of the heart rate. Change the set temperature.

  Moreover, 3rd invention is the air-conditioning control system of 1st or 2nd invention, The said control means (30) fluctuates the preset temperature of the said air-conditioning means (10) in the range beyond a predetermined | prescribed lower limit. It is characterized by.

  In the third aspect of the invention, the control means (30) does not change the set temperature of the air conditioning means (10) so as to always follow the fluctuation of the heart rate, but does not change the setting within a range not less than a predetermined lower limit value. Change the temperature. The control means (30) sets the air conditioning means (10) when the set temperature of the air conditioning means (10) set according to the fluctuation of the heart rate is lower than a predetermined lower limit value. The temperature is kept at the predetermined lower limit.

  Moreover, 4th invention is the air-conditioning control system of any one of 1st-3rd invention. The body motion detection means (2) which detects the body motion of the said sleeper, The said body motion detection means (2) And a sleep onset determining means (36) for determining sleep onset of the sleeper based on the body movement detected by the control means, wherein the control means (30) sleeps on the sleeper by the sleep onset determining means (36). When it is determined, control for changing the set temperature of the air conditioning means (10) is started.

  In the fourth aspect of the invention, since the heart rate fluctuates greatly while the sleeper is awake, the control means (30) sets the air conditioning means (10) even when the sleeper is present. Do not control to change the temperature. And the said control means (30) starts the control which fluctuates the preset temperature of the said air-conditioning means (10), when it determines with the sleep determination means (36) that the sleeper fell asleep.

  According to the first aspect of the invention, the set temperature of the air conditioning means (10) is raised or lowered based on the fluctuation of the heart rate that correlates with the fluctuation of the deep body temperature. Regardless of this, it is possible to perform substantially V-shaped temperature control in accordance with the circadian rhythm of the sleeping person. Therefore, it is possible to realize an optimal sleeping environment for the sleeping person.

  According to the second aspect of the invention, since the set temperature of the air conditioning means (10) is increased or decreased according to the fluctuation of the moving average value per predetermined time of the sleeping person's heart rate, Heart rate is stabilized. Therefore, it is possible to easily realize temperature control that follows the change in the body temperature of the sleeping person.

  Further, according to the third aspect, the control means (30) varies the set temperature within a range equal to or higher than the predetermined lower limit value, so that the room temperature is kept equal to or higher than the predetermined lower limit value. Therefore, it is possible to suppress excessive heat dissipation after the deep body temperature has been sufficiently lowered, thereby suppressing the “sleeping” of the sleeper.

  According to the fourth aspect of the invention, when the sleep determination unit (36) determines that the sleeper has fallen asleep, the control for changing the set temperature of the air conditioning unit (10) is started. Unnecessary fluctuations in the set temperature during awakening when the heart rate varies greatly can be suppressed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the air conditioning control system (1) according to the present embodiment controls an air conditioner (10) installed in a bedroom (5).

  The air conditioner (10) as the air conditioning means (10) is, for example, a wall-hanging type, and is configured to regulate the temperature of the air in the bedroom (5).

  The air conditioner (10) includes a refrigerant circuit that performs a refrigeration cycle by circulating the refrigerant, and supplies air cooled or heated by a heat exchanger (not shown) to the bedroom (5).

  As shown in FIGS. 1 and 2, the air conditioning control system (1) includes a body motion sensor (2) and a circuit unit (30).

  The body motion sensor (2) measures a heart rate from the body motion of a sleeping person lying in the bedding (6), and constitutes a body motion detection means (2). The body motion sensor (2) includes a pressure sensitive part (21) and a pressure receiving part (22).

  The pressure-sensitive part (21) is laid on a mattress laid on the bed of the bedding (6), is constituted by an elongated and hollow tube, and a space is formed inside thereof. When the sleeping person lies on the bed, the pressure-sensitive part (21) causes a pressure fluctuation accompanying the body movement of the sleeping person, and the internal pressure of the pressure-sensitive part (21) acts on the pressure-receiving part (22). Is configured to do.

  The pressure receiving part (22) includes a casing (23) and a sensor part (24) accommodated in the casing (23). The sensor unit (24) includes a microphone, a pressure sensor, and the like, receives the internal pressure applied from the pressure-sensitive unit (21), and uses the internal pressure as a body movement detection signal via the lead wire (25). It is configured to output to the unit (30). 2 denotes a minute leak groove (26) formed at a connection position between the pressure sensing part (21) and the pressure receiving part (22). This leak groove (26) causes the sensor part (24) to break down due to the sudden increase in internal pressure acting on the sensor part (24) when a sleeper gives a strong impact to the bed. Or the saturation of the detection signal.

  The circuit unit (30) constitutes a control means (30), and as shown in FIG. 3, a signal processing unit (31), a heart rate detection unit (32), a fluctuation value calculation unit (35), The sleep determination unit (34) and the set temperature change unit (36) are provided.

  The signal processing unit (31) is configured to modulate the detection signal output from the pressure receiving unit (22) of the body motion sensor (2) into a body motion signal in a predetermined frequency band and output the detection signal. .

  The heartbeat detection unit (32) constitutes a heartbeat detection means (32), and includes a heart rate measurement unit (33) and a moving average calculation unit (34).

  The heart rate measurement unit (33) extracts a signal of the heart rate frequency band from the frequency band of the body motion signal output from the signal processing unit (31) by a heart rate extraction filter, and the extracted signal The heart rate per minute is derived from the actually measured value.

  The moving average calculating unit (34) removes a noise signal due to rough body movement such as turning over from the measured heart rate derived by the heart rate measuring unit (33), and then, for example, a moving average per 20 minutes A value is obtained and is derived as a heart rate moving average value.

  The fluctuation value calculation unit (35) calculates a fluctuation value at predetermined time intervals (for example, every minute) of the heart rate moving average value derived by the moving average calculation unit (33).

  The sleep onset determination unit (36) constitutes a sleep onset determination means (36), and determines whether or not the sleeper has fallen asleep based on the signal modulated by the signal processing unit (31). . The sleep determination unit (36) includes a bed determination unit (37) and a sleep / wake determination unit (38).

  The bed leaving determination unit (37) determines whether the sleeping person is in the bed or in the bed (6). The determination by the bed leaving determination unit (37) is performed by comparing the body motion signal modulated by the signal processing unit (31) with a predetermined bed leaving determination threshold value. Specifically, the bed leaving determination unit (37) is considered to have caused body movement from the sleeper when the body movement signal continues for a predetermined time or longer and exceeds the bed leaving determination threshold. Determined to be “in bed”. On the other hand, when the body motion signal is below the bed leaving determination threshold, the bed leaving determination unit (37) determines that no body movement has occurred from the sleeper, and thus determines “get out of bed”.

  The sleep / wake determination unit (38) determines whether the sleeper is in a sleep state or an awake state in a state in which the sleeper is determined to be “in bed” by the bed leaving determination unit (37). To do. The determination by the sleep / wake determination unit (38) is performed by comparing the body motion signal modulated by the signal processing unit (31) with a predetermined sleep determination threshold. Specifically, the sleep / wake determination unit (38) indicates that if the body motion signal continues for a predetermined time or longer and exceeds the sleep determination threshold, the sleeper in bed is awake, and the sleeper wakes up from the sleeper. Since the movement is considered to have occurred, it is determined as “awakening”. On the other hand, when the body motion signal is below the sleep determination threshold, the sleep / wakefulness determination unit (38) is sleeping in the bed, and only a slight movement occurs from the sleeper. Therefore, it is determined as “sleep”.

  The set temperature changing unit (39) changes the set temperature of the air conditioner (10) based on the fluctuation value of the heart rate moving average value calculated by the fluctuation value calculating unit (35) every predetermined time. Is. The set temperature changing unit (39) includes a target temperature setting unit (40), a target temperature determining unit (41), and a signal output unit (42).

  When the sleep determining unit (36) determines that the sleeper has fallen asleep, the target temperature setting unit (40) is configured to calculate the heart rate moving average value calculated by the fluctuation value calculating unit (35) every predetermined time. The target temperature is set every predetermined time based on the fluctuation value. Specifically, the target temperature setting unit (40), when the heart rate moving average value increases by x (bpm), exceeds the previously set temperature (temperature one minute ago) T (° C.). While the target temperature is set to a temperature T + a × x (° C.) higher by a × x (° C.), if the heart rate moving average value decreases by x (bpm), the target temperature T (° C.) one minute before The target temperature is set to a temperature Ta−x × (° C.) that is lower by a × x (° C.). In the present embodiment, the coefficient a is defined as “0.1”. For example, if the target temperature one minute ago is 29 (° C.) and the heart rate moving average value increases by 3 (bpm), the target temperature setting unit (40) sets the target temperature to 29.3 (° C.). Set to. If the target temperature one minute ago is 29 (° C.) and the heart rate moving average value decreases by 2 (bpm), the target temperature setting unit (40) sets the target temperature to 28.8 (° C.). Set to.

  The target temperature determination unit (41) is configured to determine whether the target temperature set by the target temperature setting unit (40) is equal to or higher than a predetermined lower limit value. Here, the lower limit is defined as “26.0 (° C.)”. Then, if the set target temperature is 26.0 (° C.) or more, the target temperature determination unit (41) inputs the target temperature to the signal output unit (42). On the other hand, even if the set target temperature is less than 26.0 (° C.), the target temperature determination unit (41) sets the target temperature to 26.0 (° C.) and inputs it to the signal output unit (42).

  The signal output unit (42) modulates information on the target temperature output from the target temperature determination unit (41) into a temperature signal of a predetermined frequency band and outputs the temperature signal to the air conditioner (10).

  When the temperature signal is input, the air conditioner (10) adjusts the temperature in the bedroom (5) using the target temperature as a set temperature.

  As described above, the air conditioning control system (1) according to the present embodiment varies the set temperature of the air conditioner (10) according to the variation of the heart rate detected by the heart rate detection unit (32). It is configured. Therefore, the relationship between fluctuations in heart rate during sleep and fluctuations in deep body temperature will be described.

  5A and 5B are diagrams showing human physiological characteristics during sleep, in which FIG. 5A is a time-dependent change in sleep depth, FIG. 5B is a time-dependent change in deep body temperature, and FIG. 5C is a time-dependent change in heart rate. Showing change. In FIG. 5C, rectal temperature was used as the deep body temperature.

  As shown in FIG. 5A, the sleep depth is classified into depths 1 to 4 by electroencephalogram analysis. Depth 1 represents a state close to an arousal state, and depth 4 represents a state of deep sleep. Due to the characteristics of EEG, depths 3 and 4 are called slow wave sleep. Apart from this, sleep that is actually in a sleep state while showing an electroencephalogram response close to awakening is called REM sleep. In order to distinguish from this REM sleep, the sleep state indicated by depths 1 to 4 is referred to as non-REM sleep. Usually, non-REM sleep and REM sleep appear alternately and regularly with regularity. One cycle is about 90 minutes and is called the sleep cycle. In addition, the noise of the vertical axis | shaft of Fig.5 (a) represents the state in which the heart rate was disturb | confused by rough body movements, such as a sleeping person's rolling, and awakening represents the state in which the sleeping person is waking up.

  As shown in FIG. 5A, a very deep sleep (slow wave sleep) comes after a while after falling asleep. Thereafter, REM sleep and non-REM sleep appear alternately, but the depth of non-REM sleep becomes shallower as it becomes dawn.

  By the way, although it is said that the sympathetic nerve is dominant in REM sleep and the set point of body temperature is increased, it can be confirmed in FIG. 5B that the deep body temperature during sleep is increased during REM sleep. In addition, it can be confirmed that the deep body temperature during sleep decreases from the time of falling asleep to dawn, and starts to rise before getting up.

  Here, the human body maintains the homeostasis of the body temperature while adjusting the amount of heat released and the amount of heat produced. To increase the amount of heat produced, it is necessary to increase the oxygen consumption in the body. And if oxygen consumption increases, the heart rate will increase. Therefore, it becomes possible to estimate the variation in the deep body temperature by grasping the sleeper's heart rate.

  To support this, in FIG. 5 (c), the heart rate during sleep increased during REM sleep, and the heart rate during sleep decreased from falling asleep to dawn and tended to increase before waking up. It can be confirmed that it rolls.

  Furthermore, FIG. 6 is a figure which shows the time-dependent change of the moving average value per 20 minutes of heart rate, and the time-dependent change of deep body temperature (rectal temperature). According to FIG. 6, it can be more clearly confirmed that the heart rate changes with time in a substantially V shape like the deep body temperature, and that there is a good correlation between the heart rate fluctuation and the deep body temperature fluctuation.

  Thus, in the present invention, the temperature of the room where the sleeping person is sleeping is controlled based on the fluctuation of the heart rate detected by the heart rate detecting unit (32).

-Operation of air conditioning control system-
Next, the heartbeat detection operation and the temperature control operation in the air conditioning control system (1) will be described based on the flowchart of FIG.

  When the air conditioning control system (1) is turned on, the sleep state of the sleeping person is detected.

  First, in step ST1, the body motion sensor (2) outputs a detection signal accompanying the body motion of a sleeping person to the circuit unit (30), and the body motion output unit (31) outputs the detection signal to a predetermined value. The signal is modulated into a body motion signal in a frequency band (7.5 ± 2.5 Hz) and output to the sleep onset determination unit (36).

  In the next step ST2, the bed leaving determination unit (37) determines whether or not a sleeping person is present in the bedding (6). If the determination in step ST2 is NO, that is, the body motion signal is below the bed leaving determination threshold, and the bed leaving determining unit (37) determines “get out of bed”, the process returns. On the other hand, if the determination in step ST2 is YES, that is, if the body movement signal continues for a predetermined time or more and exceeds the bed leaving determination threshold, and the bed leaving determination unit (37) determines that “bed in” is performed. Proceed to ST3.

  In the next step ST3, the heart rate measuring section (33) extracts a heart rate frequency band signal from the body motion signal output in step ST1, and derives a heart rate per minute. As described above, when the bed leaving determination unit (37) determines “being in bed”, the measurement of the heart rate starts when the sleeping person is in the sleep state by the sleep / wake determination unit (38). This is because when it is determined, the moving average value of the heart rate can be quickly calculated.

  In the next step ST4, the sleep / wake determination unit (38) determines whether or not the sleeping person is in a sleeping state. When the determination in step ST4 is NO, that is, when the body motion signal continues for a predetermined time or longer and exceeds the sleep determination threshold, and the sleep / wake determination unit (38) determines “wake”, the process returns. . On the other hand, if the determination in step ST4 is YES, that is, if the body motion signal is below the sleep determination threshold value and the sleep / wake determination unit (38) determines to be “sleep”, the process proceeds to step ST5.

  In the next step ST5, the moving average calculation unit (34) uses the heart rate per 20 minutes based on the actual heart rate continuously derived by the heart rate measurement unit (33) before sleep of the sleeping person. A number moving average is derived. Specifically, the moving average calculating unit (34) obtains a heartbeat moving average value per 20 minutes after removing a noise signal due to rough body movement such as turning over from the actually measured heart rate. The heartbeat and the noise can be easily distinguished from each other by comparing with the noise at the sleep depth as shown in FIG. This heartbeat moving average value is converted into a fluctuation value per minute of the heart rate moving average value in the fluctuation value calculating section (35) and then inputted to the set temperature changing section (39).

  In the next step ST6, the target temperature setting unit (40) sets the target temperature every minute based on the fluctuation value per minute of the heart rate moving average value calculated by the fluctuation value calculation unit (35). Set. Specifically, the target temperature setting unit (40) increases the target temperature by 0.1 (° C.) higher than the target temperature one minute before each time the heart rate moving average value increases by 1 (bpm). On the other hand, every time the heart rate moving average value decreases by 1 (bpm), the target temperature is set to a temperature lower by 0.1 (° C.) than the target temperature one minute before. For example, if the target temperature one minute ago is 27.0 (° C.) and the heart rate moving average value increases by 5 (bpm), the target temperature is set to 27.5 (° C.) and conversely the heart rate If the moving average value decreases by 3 (bpm), the target temperature is set to 26.7 (° C.).

  In the next step ST7, the target temperature determination unit (41) determines whether or not the target temperature set by the target temperature setting unit (40) is equal to or higher than a predetermined lower limit of 26.0 (° C.). judge. When the determination in step ST7 is YES, that is, when the set target temperature is 26.0 (° C.) or higher, the target temperature determination unit (41) sets the target temperature to the signal output unit (42). Then, the process proceeds to step ST9.

  In the next step ST9, the signal output unit (42) modulates the target temperature set by the target temperature setting unit (40) into a temperature signal of a predetermined frequency band and outputs it to the air conditioner (10). After that, it returns.

  On the other hand, if the determination in step ST7 is NO, that is, if the set target temperature is less than 26.0 (° C.), the process proceeds to step ST8.

  In the next step ST8, the target temperature determination unit (41) outputs the target temperature as 26.0 (° C.) to the signal output unit (42), and then proceeds to step ST9.

  In the next step ST9, the signal output unit (42) modulates the target temperature corrected by the target temperature determination unit (41) into a temperature signal of a predetermined frequency band and outputs it to the air conditioner (10). After that, it returns.

  As described above, by repeatedly performing the heartbeat detection operation and the temperature control operation, for example, the heart rate of a sleeping person, which was 75 (bpm) at midnight, gradually decreases to 55 (bpm) at 6 am Then, when it increases to 7 (bpm) at 7 am, the room temperature is lowered by 2.0 (° C.) from the time of sleep to one hour before getting up, and then the room temperature is set to 1. Substantially V-shaped temperature control is performed to raise the temperature by 0 (° C.).

<Effect of this embodiment>
As described above, according to the present embodiment, the set temperature of the air conditioner (10) is increased or decreased based on the fluctuation of the heart rate that correlates with the fluctuation of the deep body temperature. Regardless of sleep time or the like, approximately V-shaped temperature control in accordance with the circadian rhythm of the sleeping person can be performed. Therefore, it is possible to realize an optimal sleeping environment for the sleeping person.

  Also, since the set temperature of the air conditioner (10) is raised or lowered according to the fluctuation of the moving average value per predetermined time of the sleeping person's heart rate, even if the sleeping person's heart rate fluctuation is severe, the sleeping person It is possible to easily realize temperature control that follows fluctuations in the deep body temperature.

  Furthermore, since the circuit unit (30) varies the set temperature in a range equal to or higher than a predetermined lower limit value, the room temperature is maintained at a predetermined lower limit value or higher. Therefore, since excessive heat dissipation is suppressed after the deep body temperature has sufficiently decreased, the “sleeping” of the sleeper can be suppressed.

  In addition, when the sleep determination unit (36) determines that the sleeper has fallen asleep, control is started to change the set temperature of the air conditioner (10). Unnecessary fluctuations in temperature can be suppressed.

(Other embodiments)
In the above-described embodiment, the body motion sensor (2) including the pressure-sensitive portion (21) configured by an elongated and hollow tube is used. However, the present invention is not limited to this. For example, an air mattress in which air is enclosed May be used. If the air mattress is used in this manner, the internal pressure of the air mattress varies depending on the sleeper's heartbeat, body movement, and the like, so that the sleeper's heart rate can be detected based on the pressure variation.

  In the above embodiment, the coefficient a for setting the target temperature is set to “0.1”. However, the present invention is not limited to this. It may be possible to set to. For example, when the difference between the maximum value and the minimum value of the sleeper's heart rate is large (for example, 30), the desired temperature can be set even if the coefficient a is set to a value smaller than 0.1 (for example, 0.07). Substantially V-shaped temperature control that produces a difference (2.1 (° C.)) can be performed. On the contrary, when the difference between the maximum value and the minimum value of the sleeper's heart rate is small (for example, 10), the coefficient a is set to a value larger than 0.1 (for example, 0.2). Thus, a substantially V-shaped temperature control that produces a desired temperature difference (2.0 (° C.)) can be performed.

  Furthermore, in the above embodiment, the heart rate moving average value per 20 minutes is used as the heart rate when setting the target temperature. However, the heart rate moving average value per 10 minutes is not limited to this. A heart rate moving average value per 30 minutes may be used.

  Moreover, in the said embodiment, although the lower limit of the preset temperature of an air conditioner (10) is 26.0 (degreeC), if a sleeper's "sleeping" can be suppressed, 26.0 (degreeC) ) A higher temperature or a temperature lower than 26.0 (° C) may be set.

  The present invention is not limited to the embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof.

  As described above, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the present invention is useful for an air conditioning control system and the like that improve the sleep environment of a sleeping person.

1 is an overall configuration diagram of an air conditioning control system according to an embodiment of the present invention. It is a schematic sectional drawing of the body motion sensor of embodiment. It is a schematic block diagram of the circuit unit of an embodiment. It is a flowchart which shows the heartbeat detection operation | movement and temperature control operation | movement of the system of the air-conditioning control which concerns on embodiment. It is a figure which shows the human physiological characteristic during sleep, the figure (a) shows the time-dependent change of sleep depth, the figure (b) shows the time-dependent change of deep body temperature, and the figure (c) shows the time-dependent change of heart rate. It is a figure which shows the time-dependent change of the moving average value per predetermined time of heart rate, and the time-dependent change of deep body temperature.

Explanation of symbols

1 Air conditioning control system 2 Body motion sensor (body motion detection means)
10 Air conditioner (air conditioning means)
30 Circuit unit (control means)
32 Heart rate detector (Heart rate detector)
36 Sleep detection unit (sleep detection unit)

Claims (4)

Air conditioning means (10) for air conditioning in the room;
A heart rate detecting means (32) for detecting fluctuations in the heart rate of a sleeping person sleeping in the room;
While the set temperature of the air conditioning unit (10) is increased according to the increase in the heart rate detected by the heart rate detection unit (32), the air conditioning is performed according to the decrease in the heart rate detected by the heart rate detection unit (32). An air conditioning control system comprising control means (30) for controlling the set temperature of the means (10) to be lowered. The air conditioning control system according to claim 1, wherein
The control means (30) varies the set temperature of the air conditioning means (10) in accordance with the fluctuation of the moving average value per predetermined time of the heart rate detected by the heart rate detection means (32). Air conditioning control system. In the air conditioning control system according to claim 1 or 2,
The air conditioning control system, wherein the control means (30) varies the set temperature of the air conditioning means (10) in a range equal to or greater than a predetermined lower limit value. In the air-conditioning control system according to any one of claims 1 to 3,
Body motion detection means (2) for detecting the body motion of the sleeper,
A sleep onset determination means (36) for determining sleep onset of the sleeper based on the body movement detected by the body motion detection means (2);
The control means (30) starts control for changing the set temperature of the air conditioning means (10) when the sleep determination means (36) determines that the sleeper has fallen asleep. Air conditioning control system.

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