Air conditioning control system

Abstract

To provide a system performing indoor air-conditioning control so as to enable autonomous nerves of a person in a room to become an appropriate state in accordance with a work content of the person.SOLUTION: An air-conditioning control system includes: an air-conditioning control unit for setting an operating condition of an air-conditioner; an environmental information acquisition unit for acquiring environmental information on inside of a room in which air-conditioning control is performed; and a mode selection unit for setting a control mode when the air-conditioner is operated. The air-conditioning control unit includes: a biological information acquisition section for acquiring biological information from a biological information collection terminal collecting biological information on an object person; a biological information determination section for determining a state of autonomous nerves of the object person on the basis of the biological information; and a control condition setting section for setting the operating condition of the air-conditioner on the basis of the state of the autonomous nerves of the object person determined by the biological information determination section and the control mode selected by the mode selection unit.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] One embodiment of the present invention relates to an air conditioning control system that determines the state of the autonomic nerves of a room occupant and controls the air conditioning so that the autonomic nerves are in an appropriate state.

Background Art

[0002] As an air conditioner that adjusts the temperature, humidity, cleanliness, etc. indoors, an air conditioning system that performs air conditioning based on biological information acquired from room occupants has been proposed. For example, an air conditioning system is disclosed that acquires the biological information of a room occupant, calculates an index value of the autonomic nerves from the acquired biological information, performs air conditioning control so that the sympathetic nerves of the room occupant do not exceed the reference value if the index value is within the reference range, and switches the operating state of the air conditioner when the reference value is exceeded (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The air conditioning system disclosed in Patent Document 1 controls the air conditioning so that the sympathetic nerves of the room occupant are within the reference value, but does not consider how the state of the autonomic nerves affects the work content and productivity. That is, the air conditioning system disclosed in Patent Document 1 has a problem that it cannot control the air conditioner so that the state of the autonomic nerves is suitable according to the work content of the occupants in an office or the like.

[0005] In view of such problems, one object of one embodiment of the present invention is to provide a system that performs indoor air conditioning control so as to lead to an appropriate state of the autonomic nerves according to the work content of the occupants.

Means for Solving the Problems

[0006] An air-conditioning control system according to an embodiment of the present invention includes an air-conditioning control unit that sets operating conditions of an air conditioner, an environment information acquisition unit that acquires indoor environment information for performing air-conditioning control, and a mode selection unit that sets a control mode when operating the air conditioner. The air-conditioning control unit includes a biological information acquisition unit that acquires biological information from a biological information collection terminal that collects biological information of a target person, a biological information determination unit that determines the state of the autonomic nerve of the target person based on the biological information, and a control condition setting unit that sets the operating conditions of the air conditioner based on the state of the autonomic nerve of the target person determined by the biological information determination unit and the control mode selected by the mode selection unit.

[0007] The mode selection unit may be configured such that a first mode that gives priority to the sympathetic nerve and a second mode that gives priority to the parasympathetic nerve can be selected as the control mode. The biological information may include heart rate information, and the biological information determination unit may have a function of calculating a heart rate variability parameter from the heart rate information.

[0008] The biological information determination unit may have a function of calculating the LF / HF ratio as the heart rate variability parameter and determining whether the autonomic nerve of the target person is in a state of sympathetic nerve dominance or parasympathetic nerve dominance from the LF / HF ratio.

[0009] The biological information determination unit may determine the arousal state from the temporal change of the heart rate of the target person, and when the biological information determination unit determines that the arousal level of the target person is low, the control condition setting unit may have a function of setting an operating condition of lowering the set temperature of the air conditioner.

[0010] The air conditioning control unit may have a function of performing control to lower the set temperature in the room when the first mode is selected as the control mode, and performing control to raise the set temperature in the room when the second mode is selected as the control mode. The air conditioning control unit may perform control to lower the set temperature in the room when the first mode is selected by the mode selection unit and the biological information determination unit determines that the parasympathetic nerve is dominant, and perform control to raise the set temperature in the room when the second mode is selected by the mode selection unit and the biological information determination unit determines that the sympathetic nerve is dominant.

[0011] The air conditioning control unit may have a function of not changing the set temperature when the set temperature deviates from a predetermined range.

[0012] The air conditioning control unit may further include a position information acquisition unit that acquires the position information of the target person, and an environmental information acquisition unit that measures the temperature inside and outside the room where the target person is present. When the position information acquisition unit determines that the target person has entered the room from outside, and the environmental information acquisition unit determines that the temperature difference between the inside and outside of the room is equal to or greater than a predetermined range, the air conditioning control unit may have a function of controlling the set temperature to be close to the outside temperature within a certain period so that the temperature difference becomes smaller.

Advantages of the Invention

[0013] According to an embodiment of the present invention, by measuring the state of the autonomic nerve from the biological information of the target person and setting the operating conditions of the air conditioner based on that state, it is possible to work in a state of the autonomic nerve suitable for the content of the work of the target person in the work space.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Mode for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like. However, the present invention can be implemented in many different modes and is not to be construed as being limited to the description of the embodiments exemplified below. For the purpose of making the description clearer, the drawings may schematically represent the width, thickness, shape, etc. of each part compared to the actual mode, but this is merely an example and does not limit the interpretation of the present invention. Also, in this specification and each drawing, elements that are the same as those described above with respect to the previously shown drawings may be given the same reference numerals (or reference numerals with a, b, etc. appended to the numbers), and detailed descriptions may be omitted as appropriate. Furthermore, the letters "first" and "second" appended to each element are for convenience in distinguishing each element and have no further meaning unless otherwise specified.

[0016] 1. Overall Configuration of Air Conditioning Control System Figure 1 shows the concept of an air-conditioning control system 100 according to an embodiment of the present invention. The air-conditioning control system 100 includes an air-conditioning control unit 102 that sets the operating conditions of the air conditioner 112, an environmental information acquisition unit 104 that acquires indoor environmental information for performing air-conditioning control, and a mode selection unit 108 that selects a control mode when operating the air conditioner 112. The air-conditioning control unit 102 may further include a communication unit for acquiring biological information from the biological information collection terminal 110. The environmental information acquisition unit 104, the communication unit 106, and the mode selection unit 108 are connected to the air-conditioning control unit 102. There is no limitation on the type of connection between these units and the air-conditioning control unit 102, and it is only necessary that information can be transmitted, received, or both. Also, the air-conditioning control unit 102 may be connected to the environmental information acquisition unit 104, the communication unit 106, and the mode selection unit 108 via the server 103. The server 103 may be connected to the air-conditioning control unit 102, the communication unit 106, and the mode selection unit 108 via a network such as a local area network or the Internet. By connecting these units via the server 103, the units can be distributed and arranged. For example, the air-conditioning control unit 102 can be arranged remotely with respect to the communication unit 106 and the mode selection unit 108 to control the air conditioner 112. The air-conditioning control unit 102 composed of such units has a function of controlling the operation of the air conditioner 112.

[0017] Figure 1 also schematically shows a mode in which the subject 300 performs a predetermined task in the work space 302. In the work space 302, an air outlet 114 of the air conditioner 112 is installed corresponding to one subject 300. Cold air and warm air are blown out from the air outlet 114, and the temperature of the work space where the subject 300 performs work can be controlled. There is no limitation on the position of the air outlet 114 of the air conditioner 112, and it may be arranged on the ceiling side as shown by the solid line in Figure 1, on the floor side as shown by the dotted line, or on both the ceiling side and the floor side. Note that Figure 1 shows the indoor unit of the air conditioner 112, and the outdoor unit equipped with a compressor etc. is omitted.

[0018] In this specification, the "subject" refers to a person who is the target of guiding the state of the autonomic nervous system to a predetermined state by controlling the air conditioning in the working space. In other words, the subject 300 refers to a person present in the space (location) where air conditioning (temperature adjustment) is performed by the air conditioning control system 100, and is not limited to a specific individual. "Work" shall include activities such as office work such as document creation, article manufacturing work on the production line, driving a vehicle, developing new products, creating ideas, writing, and business negotiations. Also, attending lectures and speeches, and attending meetings are also included as a form of work performed by the subject. Further, the "working space" refers to the space where work is performed, which is mainly indoors, an indoor space where the subject is present, and the temperature is controlled by the air conditioning installed for one subject. It may be a corner in a large room (shared space) or a private room (private space) where one subject is present. That is, the space (location) where air conditioning is performed by the air conditioning control system 100 does not need to be closed and may be in a state where multiple people can freely enter and exit. For example, the space (location) where air conditioning is performed by the air conditioning control system 100 includes the offices (offices) of corporations (companies) conducting business, conference rooms, classrooms in schools, and living rooms in residences, but is not limited to this exemplification.

[0019] The subject 300 has a biological information collection terminal 110. The air conditioning control unit 102 has a function of collecting the biological information of the subject 300 from the biological information collection terminal 110 via the communication unit 106 and controlling the operation of the air conditioner 112. The air conditioning control system 100 is composed of each unit as listed above, and the biological information collection terminal 110 may also be included therein. The outline of each unit will be described below.

[0020] 1-1. Environmental Information Acquisition Unit The environmental information acquisition unit 104 has a function of acquiring environmental information of the space where the subject 300 is present. For example, when the subject 300 is present in the room and performing work, the environmental information acquisition unit 104 acquires the environmental information of the room. The installation location of the environmental information acquisition unit 104 is not limited as long as it can collect the environmental information around the subject 300. The environmental information acquisition unit 104 is installed, for example, in a suspended state from a wall, ceiling or partition, or placed on the floor or a tabletop in a predetermined room. The environmental information collected by the environmental information acquisition unit 104 does not have to be the environmental information of the entire room, and it may be the environmental information around the subject 300. The number of the environmental information acquisition units 104 is not limited, and at least one or more are installed in the work space 302.

[0021] The environmental information acquisition unit 104 has a function of detecting the room temperature as the environmental information of the room. In addition, the environmental information acquisition unit 104 may be added with functions of detecting humidity, oxygen concentration, carbon dioxide concentration, noise, pressure, illuminance, ultraviolet ray amount, etc. In order to realize such functions, the environmental information acquisition unit 104 may include at least one of a temperature sensor, a humidity sensor, a gas sensor, a noise meter, a pressure meter, an illuminometer, and an ultraviolet sensor.

[0022] 1-2. Communication Unit The communication unit 106 has a function of communicating with the biological information collection terminal 110. The communication unit 106 communicates with the biological information collection terminal 110, receives the biological information of the subject 300, and outputs the received information to the air conditioning control unit 102. In other words, the air conditioning control unit 102 is connected to the biological information collection terminal 110 via the communication unit 106, and collects the biological information of the subject 300 from the biological information collection terminal 110.

[0023] One or more communication units 106 are installed indoors where the target person 300 is present. When the target person 300 is present in a shared space such as an office, a plurality of communication units 106 may be installed in that shared space. Also, a plurality of communication units 106 may be installed in a building. For example, in addition to being installed in a predetermined room, the communication unit 106 may be installed at the entrance of the building, in corridors, stairways, or other rooms.

[0024] The communication unit 106 may have a function as a position sensor for identifying the position of the target person 300. For example, by making it possible to identify the address (installation location) of the communication unit 106 installed in the building and specifying the communication unit 106 that has communicated with the biometric information collection terminal 110 of the target person 300, the position of the target person 300 in the building can be identified.

[0025] 1-3. Mode Selection Unit The mode selection unit 108 has a function of selecting a control mode of the air conditioner 112. The control mode includes at least two modes, a first mode and a second mode. Here, the first mode and the second mode are modes that lead the autonomic nerves of the target person 300 to a predetermined state. Specifically, the first mode is a mode for making the sympathetic nerves dominant and can be called the "concentration mode", and the second mode is a mode for making the parasympathetic nerves dominant and can be called the "creation mode".

[0026] The selection of the control mode by the mode selection unit 108 is performed by the target person 300 operating the mode selection unit 108. The mode selection unit 108 is composed of a switching circuit, a computer (desktop computer, notebook computer), a tablet terminal equipped with a touch panel, etc. in order to enable the selection of the control mode according to the intention of the target person 300. As another form, it may be embodied in an air conditioner operation panel or a remote controller (remote control) for operating the air conditioner 112. Also, a function as a mode selection unit may be incorporated into a mobile terminal held or worn by the target person 300.

[0027] 1 - 4. Server Further, the air - conditioning control system 100 may include a server 103 connected to the air - conditioning control unit 102. The server 103 is provided between the environmental information acquisition unit 102, the communication unit 106, and the mode selection unit 108. The server 103 has a function of collecting and storing data such as the data acquired by the environmental information acquisition unit 102, the communication history between the communication unit and the biological information collection terminal 110, the biological information transmitted from the biological information collection terminal 110, and the history of the mode selected by the mode selection unit 108. Further, the server 103 outputs the collected data to the air - conditioning control unit 102, and the air - conditioning control unit 102 has a function of controlling the air conditioner 112 using the data.

[0028] 1 - 5. Air - conditioning control unit The air - conditioning control unit 102 receives the environmental information acquired by the environmental information acquisition unit 104, the information regarding the control mode selected by the mode selection unit 108, and the biological information of the subject 300 collected by the biological information collection terminal 110 acquired via the communication unit 106. The air - conditioning control unit 102 has a function of setting the operating conditions of the air conditioner 112 based on these information and controlling the operation of the air conditioner 112. Further, the air - conditioning control unit 102 has a function of reading the data collected by the server 103 or the data accumulated by the server and controlling the air conditioner 112 using the data.

[0029] 1 - 6. Biological information collection terminal The biological information collection terminal 110 is equipped with various sensors for measuring biological information and has a function of collecting the biological information of the subject 300. The biological information of the subject 300 includes body temperature, heart rate, pulse, blood oxygen concentration, sweating amount, body movement count, and respiratory rate, etc. Further, basic information about the subject 300 such as age, gender, height, weight, and clothing amount is input to the biological information collection terminal 110.

[0030] 2. Hardware configuration of the air - conditioning control system FIG. 2 shows the hardware configuration of the air-conditioning control system 100. The air-conditioning control system 100 includes a computer 116, an air conditioner 112, a sensor 120, a router 122, and terminals 125 (125a, 125b). Further, as described above, the air-conditioning control system 100 may include a server 103. The computer 116 is composed of a CPU (Central Processing Unit), a memory, a communication interface, etc., and by operating according to a computer program, the function as the air-conditioning control unit 102 is realized. A storage device 118 such as a hard disk or a solid state drive for storing data may be connected to the server 103. Note that the server 103 is realized by a physical server, a virtual server, a cloud server, etc., and there is no particular limitation on the form of the server. The transmission and reception of signals between the server 103 and the router 122 and the sensor 120, the transmission and reception of signals (information) between the server 103 and the computer 116, and the transmission and reception of signals between the computer 116 and the air conditioner 112 may be performed via the communication network 111.

[0031] The air conditioner 112 is a device installed on the ceiling, wall, or floor, and is not limited to an air-conditioning method such as an individual air-conditioning method or a central air-conditioning method. In FIG. 2, the computer 116 and the air conditioner 112 are shown as individual hardware resources, but a computer may be incorporated in the air conditioner 112.

[0032] Sensor 120 is a device that acquires environmental information and corresponds to the hardware resources that implement the functions of the environmental information acquisition unit 108. Specifically, sensor 120 is a temperature sensor. In addition to this, as sensor 120, a humidity sensor, a gas sensor that detects carbon dioxide concentration, oxygen concentration, etc., a noise meter, a pressure gauge, an illuminance meter, an ultraviolet sensor, etc. may be added. Router 122 is used to connect the wearable terminal 124 and the computer 116, and is the hardware resource that implements the functions of the communication unit 106. Specifically, router 122 can use a WiFi router that performs wireless communication with the biological information collection terminal 110. In addition, a short-range wireless communication router compatible with Bluetooth (registered trademark) or infrared communication can also be used.

[0033] FIG. 2 also illustrates a personal computer 125a and a tablet terminal 125b as the terminal 125 that implements the mode selection unit 108. The terminal 125 (125a, 125b) is arranged in a state where it can communicate with the router 122. A selection screen for the first mode and the second mode is displayed on the screen of the terminal 125 (personal computer 125a and / or tablet terminal 125b) used as the mode selection unit 108, and the subject 300 can select the control mode by operating the terminal 125 according to the screen display. Note that the terminal 125 shown in FIG. 2 is an example, and in addition to computer devices such as the personal computer 125a and the tablet terminal 125b, it can also be realized by the physical changeover switch described above. In addition, the functions of the mode selection unit 108 may be incorporated into the wearable terminal 124 described below.

[0034] The wearable terminal 124 is a terminal possessed by the subject 300 and serves as the hardware resource that implements the functions of the biological information collection terminal 110. The wearable terminal 124 is preferably wearable on the body of the subject 300 to collect biological information. For example, as the wearable terminal 124, a wristband type, glasses type, wristwatch type, or clothing type terminal is used.

[0035] 3. Functional Configuration of Air Conditioning Control System and Biological Information Collection Terminal Next, the functional configurations of the biological information control system and the biological information collection terminal will be described.

[0036] 3-1. Functional Configuration of Air Conditioning Control System Figure 3 shows the functional configuration of the air conditioning control unit 102 that constitutes the air conditioning control system 100. The air conditioning control unit 102 includes at least a biological information acquisition unit 136, a biological information determination unit 138, and a control condition setting unit 144. The biological information acquisition unit 136 has a function of acquiring biological information from the biological information collection terminal 110 that collects the biological information of the subject 300. The biological information determination unit 138 has a function of determining the state of the autonomic nerve of the subject 300 based on the biological information. The control condition setting unit 144 has a function of setting the operating conditions of the air conditioner 112 based on the state of the autonomic nerve of the subject 300 determined by the biological information determination unit 138 and the control mode selected by the mode selection unit 108.

[0037] The air conditioning control system 100 may further include an environmental information acquisition unit 126, an environmental information storage unit 128, a position information acquisition unit 130, a position information determination unit 132, a position information storage unit 134, a biological information storage unit 140, a control mode determination unit 142, and a control signal output unit 146.

[0038] The environmental information acquisition unit 126 acquires the environmental information acquired by the environmental information acquisition unit 104. Specifically, it acquires the temperature inside the room where the subject 300 to be measured is present (the temperature around the subject 300) from a temperature sensor having the function of the environmental information acquisition unit 104. The environmental information acquisition unit 126 outputs the acquired environmental information to the control condition setting unit 144.

[0039] The environmental information storage unit 128 has a function of storing the environmental information acquired by the environmental information acquisition unit 126. The environmental information acquisition unit 126 appropriately outputs the acquired environmental information to the environmental information storage unit 128, and the environmental information storage unit 128 stores the environmental information.

[0040] The location information acquisition unit 130 acquires the location information of the biological information collection terminal 110. The location information acquisition unit 130 acquires information on whether the subject 300 is present in the space (or indoors) that is the target of air conditioning control as the location of the subject 300. For example, when the biological information collection terminal 110 communicates with the communication unit 106, the location information acquisition unit 130 acquires the identification information of the biological information collection terminal 110 and the identification information of the communication unit 106 that has communicated with it. The location information acquisition unit 130 outputs these identification information to the location information determination unit 132.

[0041] The location information determination unit 132 has a function of determining the location within the building based on the identification information output from the location information acquisition unit 130. For example, the location information determination unit 132 discriminates which subject 300 is present at which location within the building based on the identification information of the biological information collection terminal 110 and the identification information of the communication unit 106. In this case, a reference table in which information associating the identification information of the biological information collection terminal 110 with the subject 300 and information associating the identification information of the communication unit 106 with the installed location are recorded may be prepared for the location information determination unit 132. The location information determination unit 132 can refer to the reference table to discriminate which subject 300 is present in which room from the two types of identification information acquired by the location information acquisition unit 130.

[0042] In addition, the location information determination unit 132 may have not only the function of discriminating the location of the biological information collection terminal 110 but also the function of discriminating the location of the air conditioner 112 close to the location of the biological information collection terminal 110. For example, the location information determination unit 132 can identify the air conditioner 112 close to the location where the biological information collection terminal 110 is present by referring to a reference table in which information associating the identification information of the air conditioner 112 with the installed location is recorded based on the location information of the biological information collection terminal 110. Then, the location information determination unit 132 can identify the air conditioner 112 that is the target of air conditioning control and output the information to the control condition setting unit 144.

[0043] The biological information acquisition unit 136 has a function of acquiring the biological information of the subject 300 from the biological information collection terminal 110 via the communication unit 106. The biological information acquired by the biological information acquisition unit 136 includes information such as the body temperature, heart rate, pulse rate, blood oxygen concentration, sweating amount, body movement count, and respiratory rate of the subject 300. The biological information acquisition unit 136 outputs the acquired biological information to the biological information determination unit 138.

[0044] The biological information determination unit 138 determines the state of the autonomic nerve of the subject 300 based on the acquired biological information. As an index representing the state of the autonomic nerve of the subject 300, the LF / HF ratio indicating which of the sympathetic nerve and the parasympathetic nerve is in a dominant state and to what extent is used. The LF / HF ratio is known as a heart rate variability parameter and is calculated based on the heart rate. That is, the LF / HF ratio is the ratio of the low-frequency (LF: Low Frequency) component to the high-frequency (HF: High Frequency) component included in the heart rate variability parameter obtained by analyzing the heart rate. When the subject 300 is in an excited state or a tense state, the sympathetic nerve is in a dominant state over the parasympathetic nerve, and the LF / HF ratio at this time becomes large. On the other hand, when the subject 300 is in a relaxed state, the parasympathetic nerve is in a dominant state over the sympathetic nerve, and the LF / HF ratio at this time becomes small.

[0045] In this way, the biological information determination unit 138 has a function of calculating the LF / HF ratio as a heart rate variability parameter and determining whether the autonomic nerve of the subject is in a sympathetic nerve dominant state or a parasympathetic nerve dominant state from the LF / HF ratio. Also, as will be described later, the biological information determination unit 138 has a function of determining the arousal state from the time change of the heart rate of the subject 300.

[0046] The biological information of the subject 300 is periodically acquired by the biological information acquisition unit 136, the state of the autonomic nerve of the subject 300 is determined by the biological information determination unit 138, and the information is stored in the biological information storage unit 140. In the biological information storage unit 140, the state of the autonomic nerve of the subject 300 is recorded over time. Further, information regarding the state of the autonomic nerve of the subject 300 determined by the biological information determination unit 138 (information regarding the LF / HF ratio, information indicating which of the sympathetic nerve and the parasympathetic nerve is dominant) is output to the control condition setting unit 144.

[0047] The control mode determination unit 142 determines the control mode selected by the mode selection unit 108 and outputs the information to the control condition setting unit 144. For example, the control mode determination unit 142 outputs information as to whether the first mode (a mode for making the sympathetic nerve dominant) or the second mode (a mode for making the parasympathetic nerve dominant) is selected to the control condition setting unit 144.

[0048] The control condition setting unit 144 sets the control conditions of the air conditioner 112 based on the information regarding the state of the autonomic nerve of the subject 300 determined by the biological information determination unit 138 and the control mode (the types of the first mode and the second mode) determined by the control mode determination unit 142. Further, the control condition setting unit 144 has a function of issuing an instruction to lower the set temperature of the air conditioner 112 when the biological information determination unit 138 determines that the arousal level of the subject is low. The function of the control condition setting unit 144 will be described in detail in a separate section. The control signal output unit 146 outputs a control signal for adapting the state of the autonomic nerve of the subject 300 to the selected operating conditions to the air conditioner 112. Specifically, the control signal output unit 146 outputs a control signal for raising or lowering the set temperature as an operating condition of the air conditioner 112, and a signal for increasing or decreasing the air volume.

[0049] As described above, the air conditioning control unit 102 has a function of controlling the air conditioner 112 so that the state of the autonomic nerve of the subject 300 becomes a state suitable for work by the organic combination of each functional unit.

[0050] 3-2. Functional Configuration of Biological Information Collection Terminal Figure 4 shows the functional configuration of the biological information collection terminal 110. The biological information collection terminal 110 has a function of collecting biological information representing the physical state of the subject 300 whose autonomic nerve state is controlled by the air conditioning control system 100. The biological information collection terminal 110 includes a biological information measurement unit 148, a communication unit 156, a memory unit 150, a display unit 152, and an input unit 154.

[0051] The biological information measurement unit 148 has a function of detecting the physical state of the subject 300, and has a function of detecting biological information such as, for example, the body temperature, heart rate, pulse rate, blood oxygen concentration, sweating amount, body movement count, and respiration rate of the subject 300. Note that the biological information detected by the biological information measurement unit 148 is not limited to that exemplified here, and it may have a function of acquiring other biological information.

[0052] The biological information measurement unit 148 is realized by various sensors such as, for example, a temperature sensor, an infrared sensor, a light sensor, a capacitance sensor, a pressure sensor, an ultraviolet sensor, an acceleration sensor, and a microphone. For example, the biological information measurement unit 148 is composed of an LED light source and a light receiving element, and can measure the heart rate by a method called photoplethysmography. Also, the body temperature can be measured using a thermistor sensor, a thermocouple array infrared sensor, etc. The heart rate can be detected by confirming the change in blood flow volume using a light sensor. The sweating amount can be calculated from the change amount of impedance accompanying the change in the capacitance of the capacitor using a capacitance sensor. The body movement count and respiration rate can be detected using a pressure sensor, an infrared sensor, etc. Also, the blood oxygen concentration can be detected by a pulse oximeter. The outdoor stay time can be detected by using an ultraviolet sensor and based on the cumulative time during which the ultraviolet sensor continuously receives ultraviolet light. The sleep time can be predicted by using an acceleration sensor to detect body movement. Conversation can be detected by using a microphone to acquire sound and thereby detecting the degree of tension of the living body.

[0053] The memory unit 150 has a function of storing various types of biological information acquired by the biological information measurement unit 148. The memory unit 150 can be realized by a non-volatile semiconductor memory. Also, the memory unit 150 may store information such as identification information (ID number, etc.) for identifying the subject 300, age, gender, height, and weight.

[0054] The communication unit 156 has a function of wirelessly communicating with the communication unit 106. The biological information acquired by the biological information measurement unit 148 (or the biological information stored in the memory unit 150) is transmitted from the communication unit 156 to the communication unit 106.

[0055] The display unit 152 has a function of displaying biological information collected by the biological information collection terminal 110, the operating state of the air conditioning control system 100, setting conditions, etc. The input unit 154 accepts the input of personal specific information such as the age, gender, height, and weight of the subject. The input unit 154 can also accept the input of other information.

[0056] The biological information collection terminal 110 may be a dedicated terminal for collecting biological information, or may be a terminal having both a clock and an information communication function like a wearable terminal called a smartwatch. Also, the biological information collection terminal 110 may also have the function of the mode selection unit 108 for setting the control mode of the air conditioning control system 100.

[0057] 4. Judgment of the state of the autonomic nervous system and arousal level using biological information Next, a method for determining the state of the autonomic nervous system and the arousal level of the subject 300 based on the biological information collected by the biological information collection terminal 110 will be described.

[0058] 4-1. Judgment of the state of the autonomic nervous system A method for determining the state of the autonomic nervous system using the heart rate variability parameter will be described. The heart rate variability parameter is information acquired by the biological information collection terminal 110.

[0059] To determine the state of the autonomic nervous system of a subject, the ratio of LF (low frequency) to HF (high frequency), which is obtained as a heart rate variability parameter, is used. LF is the power spectrum in the frequency band of 0.004 to 0.15 Hz within the power spectrum of heart rate variability, and is said to reflect the activities of both the sympathetic and parasympathetic nerves. HF is the power spectrum in the frequency band of 0.15 to 0.4 Hz, and is said to reflect the activity of the parasympathetic nerve (vagus nerve). The LF / HF ratio is the ratio of the powers of LF (low frequency) and HF (high frequency), and this value represents the overall balance between the sympathetic and parasympathetic nerves. A high numerical value of the LF / HF ratio indicates sympathetic dominance, and a low value indicates parasympathetic dominance. Therefore, if the LF / HF ratio can be obtained, it is possible to determine whether the subject 300 is in a state of sympathetic dominance or a state of parasympathetic dominance.

[0060] Figure 5 is a diagram schematically showing the time change of the LF / HF ratio. The LF / HF ratio changes depending on the exercise state and visual-auditory stimuli of the subject 300. Figure 5 shows that a reference value of the LF / HF ratio is set, and when the value of the LF / HF ratio is higher than the reference value, it is judged as sympathetic dominance, and when it is lower, it is judged as parasympathetic dominance. The reference value varies among individuals, and it can be set by measuring the heart rate variability parameters for a certain period in advance for each subject and calculating the balance between the sympathetic and parasympathetic nerves. The range from the reference value to the upper limit value and the lower limit value is arbitrary and can be set as appropriate. For example, when numerical values are obtained such that the median (50th percentile value) of the LF / HF ratio data for a subject over one week is 5.0, the 90th percentile value is 10.0, and the 10th percentile value is 1.5, the median can be set as the reference value, the 90th percentile value as the upper limit value, and the 10th percentile value as the lower limit value.

[0061] In addition, the subject 300 may be classified according to attributes such as age, gender, height, and weight, and the average value calculated for each attribute may be used as a reference value. For example, data on the LF / HF ratio of men and women in each age group is collected, and the median value (50th percentile value), 90th percentile value, and 10th percentile value are obtained for each age group and gender, and reference values, upper limit values, and lower limit values may be set in the same manner as described above. At this time, the constitution with respect to temperatures such as being cold-intolerant, normal, and heat-intolerant may be taken into account among the attributes.

[0062] 4-2. Judgment of arousal level A method for judging the arousal level (judging sleepiness) using the change in heart rate will be described. The heart rate is information acquired by the biological information collection terminal 110.

[0063] FIG. 6 is a graph schematically showing the time change of the heart rate per unit time of the subject 300 measured by the biological information collection terminal 110. FIG. 6 shows measurement data for three times. For example, when the following conditions (A) to (C) are satisfied in order to exclude the state where the heart rate suddenly increases as shown by "a" in the graph from the judgment, it is determined that the arousal level of the subject 300 has decreased, that is, it is in a "sleepy state", and the rest is determined to be in a normal awake state. (A) 10 beats / min > the initial heart rate at the previous measurement: b - the final heart rate at the previous measurement: c > 1 beat / min And, (B) 10 / min > the initial heart rate at the current measurement: c' - the final heart rate at the current measurement: d > 1 beat / min And, (C) When the parasympathetic nerve is dominant (LF / HF is below the reference value) both at the previous measurement and the current measurement

[0064] When the air conditioning control system 100 determines the arousal level of the subject 300 and satisfies the conditions (A), (B), and (C) above, it determines that the arousal level has decreased (in a sleepy state). Then, the air conditioning control system 100 can take measures to increase the arousal level of the subject 300 (eliminate sleepiness).

[0065] 5. Control of air conditioning The air-conditioning control system 100 controls the air-conditioning according to the control mode selected by the subject. The details of the control will be described below.

[0066] 5-1. Control Range of Air-Conditioning Temperature As shown in Table 1, when the first mode (sympathetic nerve dominance) is selected, in order to make the sympathetic nerve dominant, the set temperature of the air conditioner 112 is controlled to decrease the temperature in the range of 0.5 to 3 °C. When the second mode (parasympathetic nerve dominance) is selected, in order to make the parasympathetic nerve dominant, the set temperature of the air conditioner 112 is controlled to increase the temperature in the range of 0.5 to 3 °C. The adjustment range of the set temperature of the air conditioner 112 may be different between cooling and heating. For example, during cooling, it can be carried out in the temperature range of 20 to 28 °C, and during heating, it can be carried out in the range of 18 to 26 °C. In the case where the control range of the set temperature of the air conditioner 112 exceeds the specified value during cooling and heating, it is determined that the change of the set temperature is not possible. Note that the temperature ranges during cooling and heating can be changed as appropriate.

Table 1

[0067] Figure 7 is a graph schematically showing the relationship between the set temperature of the air conditioner 112 and the LF / HF ratio. In the graph shown in Figure 7, the vertical axis is the set temperature of the air conditioner 112, and the upper limit value and the lower limit value are the temperature ranges as shown in Table 1. For example, the upper limit value during cooling is 28 °C and the lower limit value is 20 °C, and the upper limit value during heating is 26 °C and the lower limit value is 18 °C. The set temperature of the air conditioner 112 is considered not changeable in the temperature range exceeding this upper limit value and lower limit value (zone C). In the graph shown in Figure 7, the horizontal axis is the LF / HF ratio, and the upper limit value and the lower limit value are set with respect to the reference value.

[0068] The air conditioning control system 100 is controlled within the upper and lower limit values of the set temperature of the air conditioner 112 and the upper and lower limit value ranges of the LF / HF ratio (zone A). For example, when the first mode (sympathetic nerve dominance) is selected and at a predetermined set temperature, if the LF / HF ratio of the subject 300 is in a parasympathetic nerve dominant state (point a1 shown in the graph), the air conditioning control system 100 performs control to lower the temperature so that the autonomic nerve of the subject 300 is in a sympathetic nerve dominant state. The graph shown in FIG. 7 indicates the case where the autonomic nerve of the subject 300 is in a sympathetic nerve dominant state at point a2. Also, when the value of the LF / HF ratio of the subject 300 is at point a2 as the initial value, the air conditioning control system 100 can perform control to lower the set temperature so that the sympathetic nerve is dominant, or can also perform control to maintain the set temperature.

[0069] Also, when the second mode (parasympathetic nerve dominance) is selected and at a predetermined set temperature, if the LF / HF ratio of the subject 300 is in a sympathetic nerve dominant state (point b1 shown in the graph), the air conditioning control system 100 performs control to raise the temperature so that the autonomic nerve of the subject 300 is in a parasympathetic nerve dominant state. The graph shown in FIG. 7 indicates the case where the autonomic nerve of the subject 300 is in a parasympathetic nerve dominant state at point b2. Also, when the value of the LF / HF ratio of the subject 300 is at point b2 where the parasympathetic nerve is dominant as the initial value, the air conditioning control system 100 can perform control to raise the set temperature so that the parasympathetic nerve is dominant, or can also perform control to maintain the set temperature.

[0070] Here, when exceeding the upper limit value of the LF / HF ratio (zone B1), control is performed to raise the set temperature so that the sympathetic nerve does not become overly dominant. Also, when exceeding the lower limit value of the LF / HF ratio (zone B2), control is performed to raise the set temperature so that the parasympathetic nerve does not become overly dominant. In this way, the air conditioning control system 100 controls the set temperature of the air conditioner 112 so that the state of the autonomic nerve of the subject 300 becomes a sympathetic nerve dominant or parasympathetic nerve dominant state according to the selected control mode within zone A of the graph shown in FIG. 7.

[0071] 5-2. Adaptation Time Waiting Mode When the subject 300 moves from outdoors to indoors, if the subject is subjected to a rapid temperature change, the subject may feel stress or fatigue due to the temperature difference, and the autonomic nerves in the body may be disturbed. In such a case, since it is difficult and inappropriate to immediately lead the state of the autonomic nerves of the subject 300 to a desired state, the air conditioning control system 100 can set a waiting time until the subject gets used to the indoor air conditioning temperature for a certain period of time. For example, as shown in Table 2, with respect to the outdoor air temperature, the air conditioner 112 is operated at a temperature with as small a temperature difference as possible to suppress the stress caused by the temperature difference to a minimum.

Table 2

[0072] As shown in Table 2, regardless of whether the control mode is the first mode or the second mode, within the control temperature range of the air conditioner 112, the set temperature is controlled to a temperature within ±5°C with respect to the outside air temperature, and air conditioning is performed for a predetermined time, thereby reducing the stress on the subject 300 caused by the temperature difference.

[0073] 5-3. Control for enhancing the arousal state of the subject (wake-up mode) As described with reference to FIG. 6, when it is determined that the arousal level of the subject 300 is "sleepy", the air conditioning control system 100 performs air conditioning control to enhance the arousal level of the subject 300 as shown in Table 3.

Table 3

[0074] As shown in Table 3, the air conditioning control system 100 makes a plurality of determinations on the arousal level of the subject 300. When it is determined that the subject is "sleepy" in the first determination, control is performed to lower the set temperature of the air conditioner 112 by a predetermined temperature, and air conditioning is performed at that set temperature for a certain period of time.

[0075] If it is determined again as the "sleepy state" in the second determination, further control is performed to lower the set temperature by a predetermined temperature, the air conditioner is operated at that temperature for a certain period of time, and a notification prompting the subject 300 to take a break is issued. This notification prompting the break can be issued to the computer operated by the subject 300, the mobile terminal held by the subject 300, or the biological information collection terminal 110 in any one of an image, a warning sound, vibration (vibration), voice, email, email incoming notification, and push notification, or in combination of at least two of these.

[0076] If it is determined again as the "sleepy state" in the third determination, the set temperature of the air conditioner 112 is restored, and the process of prompting the break is performed as described above. After the fourth determination, the controls in the first to third times are repeated.

[0077] The air conditioning control system 100 can determine the wakefulness of the subject 300 and perform the above-described control to wake up the sleepiness of the subject 300 and contribute to the improvement of productivity.

[0078] 6. Operation of the air conditioning control system The operation of the air conditioning control system 100 will be described. FIGS. 8, 9, and 10 are flowcharts for explaining an example of the operation of the air conditioning control system 100. In the following, it is assumed that the subject 300 is present in a predetermined room to perform work.

[0079] The operations shown in FIGS. 8, 9, and 10 are started, for example, when the air conditioner 112 is in the ON state and the subject 300 operates the mode selection unit 108 to select a control mode (S201).

[0080] The air conditioning control system 100 acquires the position information of the target person 300 (S202). The position information of the target person 300 can be acquired, for example, by the air conditioning control system 100 based on which communication unit 106 among a plurality of communication units 106 installed indoors by the biometric information collection terminal 110 held by the target person 300 communicates with the air conditioning control system 100 through the function of the air conditioning control unit 102. Specifically, the functions of the position information acquisition unit 130 and the position information determination unit 132 shown in FIG. 3 are used to determine in which room and at which position indoors the target person 300 is present.

[0081] Next, the air conditioning control system 100 acquires the environmental information of the space where the target person 300 is present (S204), and acquires the biometric information of the target person 300 (S206). In these steps, the air conditioning control unit 102 reads the measurement information of the environmental information acquisition unit 104 installed indoors where the target person 300 is present and the biometric information acquired by the biometric information collection terminal 110. Note that there is no limitation on the order of step S204 and step S206. The air conditioning control unit 102 may acquire the biometric information first, or may acquire the environmental information and the biometric information simultaneously.

[0082] Next, the air conditioning control system 100 determines the presence status of the target person 300 (S210). The air conditioning control unit 102 continues to communicate with the biometric information collection terminal 110 through the communication unit 106. When there is a continuous response to the polling signal transmitted from the communication unit 106 installed in the corresponding room, it can be determined that the target person 300 is present. When there is no response to the polling signal, it can be determined that the target person 300 is not present.

[0083] If it is determined in step S210 that the target person 300 is not present, the air conditioning control unit 102 determines that the target person 300 has left and moved (S252), returns the air conditioning control to the normal mode (initial setting value), and returns to step 202 for acquiring the position information.

[0084] When the presence of the subject 300 is confirmed, the air conditioning control unit 102 checks the current control mode (S212). If the control mode is the first mode (the mode that gives priority to the sympathetic nerve), the process proceeds to step S214. If it is the second mode (the mode that gives priority to the parasympathetic nerve), the process proceeds to step S216.

[0085] Figure 9 shows the flow of processing when the first mode is selected. The air conditioning control unit 102 determines whether the arousal level of the subject 300 is within the normal range using the biological information of the subject 300 (S218). This determination can be made according to the determination criteria described with reference to FIG. 6 and can be realized by the function of the biological information determination unit 138.

[0086] When the arousal level of the subject 300 is not within the normal range, the air conditioning control unit 102 issues a notification prompting rest (S232) and executes the wake-up mode according to the content shown in Table 3 (S234). Then, the air conditioning control unit 102 records the position information, environmental information, and biological information (step S236 shown in FIG. 8) and returns to step S202 for position information acquisition.

[0087] When the arousal level of the subject 300 is within the normal range, a determination is made as to whether the sympathetic nerve is in a dominant state (S220). This determination is made by the biological information determination unit 138 based on whether the value of the LF / HF ratio is equal to or greater than the reference value set for each subject using the heart rate variability parameter acquired by the biological information collection terminal 110.

[0088] If it is determined in step S220 that the sympathetic nerve is in a dominant state, the biological information determination unit 138 determines whether the state of the autonomic nerve is within the reference range (S228), records the position information, environmental information, and biological information (step S236 shown in FIG. 8), and returns to step S202 for position information acquisition. The determination of whether the state of the autonomic nerve is within the reference range is made based on whether the value of the LF / HF ratio set for each subject exceeds the upper limit value.

[0089] In step 228, when the state of the autonomic nerve exceeds the reference range (here, the sympathetic nerve is in a dominant state and the LF / HF ratio exceeds the upper limit value), air conditioning control is performed (S230), and the process proceeds to step 236. Here, the air conditioning control unit 102 performs control to increase the set temperature of the air conditioner 112 so as to suppress the state where the sympathetic nerve is dominant by the function of the control condition setting unit 144.

[0090] When it is determined in step S220 that the sympathetic nerve is not in a dominant state, the air conditioning control unit 102 determines whether the current set temperature is within the specified range (S222). The air conditioning control unit 102 determines whether the set temperature of the air conditioner 112 exceeds the upper limit value or the lower limit value.

[0091] When the set temperature of the air conditioner 112 is within the specified range, air conditioning control is performed so that the state where the sympathetic nerve is dominant is maintained (S224), the biological information of the subject 300 is collected by the biological information collection terminal 110 (S226), and it is determined whether the state of the autonomic nerve is within the reference range (S228). On the other hand, when the set temperature of the air conditioner 112 is not within the specified range, the biological information of the subject 300 is collected by the biological information collection terminal 110 (S226), and it is determined whether the state of the autonomic nerve is within the reference range (S228).

[0092] Next, with reference to FIG. 10, the flow of processing when the second mode is selected will be described.

[0093] The biological information determination unit 138 determines whether the parasympathetic nerve of the subject 300 is in a dominant state (S238). This determination is made by the air conditioning control unit 102 based on whether the value of the LF / HF ratio is equal to or greater than the reference value set for each subject using the heartbeat fluctuation parameter acquired by the biological information collection terminal 110.

[0094] When it is determined in step S228 that the sympathetic nerve is in a dominant state, the biological information determination unit 138 determines whether the state of the autonomic nerve is within the reference range (S246), records the position information, environmental information, and biological information (step S250 shown in FIG. 8), and returns to step S202 for obtaining the position information. The determination of whether the state of the autonomic nerve is within the reference range is made based on whether the value of the LF / HF ratio set for each subject exceeds the upper limit value.

[0095] In step 246, when the state of the autonomic nerve exceeds the reference range (here, the parasympathetic nerve is in a dominant state and the LF / HF ratio exceeds the lower limit value), air-conditioning control is performed (S248), and the process proceeds to step 250. Here, the control condition setting unit 144 of the air-conditioning control unit 102 performs control to lower the set temperature of the air conditioner 112 so as to suppress the state where the parasympathetic nerve is dominant.

[0096] When it is determined in step S238 that the parasympathetic nerve is not in a dominant state, the air-conditioning control unit 102 determines whether the current set temperature is within the specified range (S240). The air-conditioning control unit 102 determines whether the set temperature of the air conditioner 112 exceeds the upper limit value or the lower limit value.

[0097] When the set temperature of the air conditioner 112 is within the specified range, air-conditioning control is performed so that the state where the sympathetic nerve is dominant is maintained (S242), the biological information of the subject 300 is collected by the biological information collection terminal 110 (S244), and it is determined whether the state of the autonomic nerve is within the reference range (S246). On the other hand, when the set temperature of the air conditioner 112 is not within the specified range, the biological information of the subject 300 is collected by the biological information collection terminal 110 (S244), and it is determined whether the state of the autonomic nerve is within the reference range (S246).

[0098] Note that the position information, environmental information, and biological information collected in steps S236 and S250 may be stored in a database, and the stored data may be analyzed and reflected in the temperature control of the air conditioner. For example, past data approaching the autonomic nerve state required in the control mode selected for each subject may be referred to and analyzed to be reflected in the temperature control of the air conditioner (the change range of the set temperature, the change width of the set temperature (the steepness of the temperature change)).

[0099] As described above, the air conditioning control system 100 can control the air conditioner 112 so as to be in a state of the autonomic nerve suitable for the work performed by the subject 300 according to the control mode selected by the subject 300.

[0100] Note that as described above, when the subject 300 moves from the outside to the inside and is stressed by the temperature difference. In such a case, as shown in FIG. 11, before the step 210 of determining the presence / absence of the subject 300, a process of determining whether the subject 300 has entered from the outside to the inside may be added (S208).

[0101] In this step 208, the previous position of the subject 300 is determined. If the subject is indoors, the process proceeds to step 210. If the subject is outdoors, the outdoor environmental information is acquired (S252), and the adaptation time waiting mode described with reference to Table 2 is performed (S258). Then, the process proceeds to step 238.

[0102] As shown in FIG. 11, by determining the previous position of the subject 300 before performing the air conditioning control according to the control mode selected by the subject 300, the stress caused by the temperature difference received by the subject 300 can be alleviated.

[0103] As described above, according to the air conditioning control system 100 according to an embodiment of the present invention, the state of the autonomic nerve of the subject can be led to a state suitable for the content of the work, and the productivity can be improved.

[0104] Configurations that those skilled in the art can appropriately modify and implement based on the configurations disclosed in this embodiment also belong to the technical scope of the present invention as long as they include the gist of the present invention. For example, in the embodiments disclosed in this specification, those that have been appropriately added, deleted, or modified by the person skilled in the art also belong to the technical scope of the present invention as long as they do not depart from the gist of the present invention. Also, regarding the effects brought about by the embodiments disclosed in this specification, those that are obvious from the description in this specification and those that can be appropriately conceived by those skilled in the art are naturally understood to be brought about by the present invention.

Explanation of Reference Numerals

[0105] 100: Air conditioning control system, 102: Air conditioning control unit, 103: Server, 104: Environmental information acquisition unit, 106: Communication unit, 108: Mode selection unit, 110: Biometric information collection terminal, 111: Communication network, 112: Air conditioner, 114: Air outlet, 116: Computer, 118: Storage device, 120: Sensor, 122: Router, 124: Wearable terminal, 125: Terminal, 126: Environmental information acquisition section, 128: Environmental information storage section, 130: Location information acquisition section, 132: Location information determination section, 134: Location information storage section, 136: Biometric information acquisition section, 138: Biometric information determination section, 140: Biometric information storage section, 142: Control mode determination section, 144: Control condition setting section, 146: Control signal output section, 148: Biometric information measurement section, 150: Storage section, 152: Display section, 154: Input section, 156: Communication section, 300: Subject, 302: Workspace

Claims

1. An air-conditioning control unit for setting the operating conditions of an air conditioner, An environmental information acquisition unit for acquiring indoor environmental information for performing air-conditioning control, A mode selection unit for setting a control mode when operating the air conditioner, comprising The air-conditioning control unit includes A biological information acquisition unit for acquiring biological information from a biological information acquisition terminal that collects biological information of a subject, A biological information determination unit for determining the state of the autonomic nerves of the subject based on the biological information, A control condition setting unit for setting the operating conditions of the air conditioner based on the state of the autonomic nerves of the subject determined by the biological information determination unit and the control mode selected by the mode selection unit, comprising The mode selection unit can set a first mode in which the sympathetic nerves are dominant and a second mode in which the parasympathetic nerves are dominant as the control mode, When the first mode is selected as the control mode and the biological information determination unit determines that the parasympathetic nerves are dominant, the air-conditioning control unit performs control to lower the set temperature in the room, and when the second mode is selected as the control mode and the biological information determination unit determines that the sympathetic nerves are dominant, the air-conditioning control unit performs control to raise the set temperature in the room. An air-conditioning control system characterized by the above.

2. The air-conditioning control system according to claim 1, wherein the biological information includes heart rate information, and the biological information determination unit calculates a heart rate variability parameter from the heart rate information.

3. The biological information determination unit calculates the LF / HF ratio as the heart rate variability parameter, The air-conditioning control system according to claim 2, wherein the biological information determination unit determines whether the autonomic nerves of the subject are in a state of sympathetic nerve dominance or a state of parasympathetic nerve dominance from the LF / HF ratio.

4. The biological information determination unit determines the arousal state from the temporal change in the heart rate of the subject, When the biological information determination unit determines that the arousal level of the subject is low, the control condition setting unit sets an operation condition for lowering the set temperature of the air conditioner. The air conditioning control system according to claim 2.

5. An air conditioning control unit that sets the operating conditions of the air conditioner, An environmental information acquisition unit that acquires indoor environmental information for performing air conditioning control, A mode selection unit that sets a control mode when operating the air conditioner, including The air conditioning control unit A biological information acquisition unit that acquires biological information from a biological information acquisition terminal that collects the biological information of the subject, A biological information determination unit that determines the state of the autonomic nerves of the subject based on the biological information, Based on the state of the autonomic nerves of the subject determined by the biological information determination unit and the control mode selected by the mode selection unit, a control condition setting unit that sets the operating conditions of the air conditioner, including The biological information determination unit calculates the LF / HF ratio as a heart rate variability parameter, Determines whether the autonomic nerves of the subject are in a sympathetic nerve dominant state or a parasympathetic nerve dominant state from the LF / HF ratio, The air conditioning control unit When the first mode is selected by the mode selection unit and the biological information determination unit determines that the parasympathetic nerve is dominant, control is performed to lower the set temperature in the room, When the second mode is selected by the mode selection unit and the biological information determination unit determines that the sympathetic nerve is dominant, control is performed to raise the set temperature in the room. An air conditioning control system characterized by this.

6. When the set temperature deviates from a predetermined range, the air conditioning control unit does not change the set temperature. The air-conditioning control system according to claim 1 or 5.

7. The air-conditioning control unit includes: a position information acquisition unit that acquires the position information of the target person; an environmental information acquisition unit that measures the temperatures of the room and the outside where the target person is present; and further includes: when the position information acquisition unit determines that the target person has entered the room from the outside, and the environmental information acquisition unit determines that the temperature difference between the room and the outside is equal to or greater than a predetermined range, the air-conditioning control unit controls the set temperature of the air conditioner so that the temperature difference from the outside temperature becomes small for a certain period of time; The air-conditioning control system according to any one of claims 1 to 6.

Images