Air conditioning system

Abstract

To maintain an environment in which an object person feels comfortable.SOLUTION: An air conditioning system 100 according to a first embodiment for conditioning air in an air-conditioned space 200 includes: a skin temperature acquiring section 111 for acquiring skin temperature information indicating a skin temperature of an object person 201 existing in the air-conditioned space 200; an inclination deriving section 164 for deriving inclination information indicating inclination of a change in the skin temperature on the basis of the skin temperature information; a reference range setting section 162 for setting a reference range which is a temperature range including a skin temperature at which the object person 201 feels comfortable; and a setting information update section 163 for updating setting information for determining a control state of the air conditioning system 100 on the basis of a relation between the skin temperature information and the reference range and the inclination information.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioning system that conditions air in a space to be air-conditioned based on the skin temperature of a subject. [Background technology]

[0002] As described in Patent Document 1, there is a conventional technology that determines the timing of air conditioning control according to the gradient (relative change) of temperature change in the subject's skin temperature, and controls air conditioning so that the subject feels comfortable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-227410 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the timing of air conditioning control is determined based on relative changes in skin temperature, the initial state is unknown, and there is a possibility that control will be implemented that deviates from the state that the subject feels comfortable in.

[0005] The present disclosure is based on the findings of the above inventors, and provides an air conditioning system that can maintain a state in which a subject feels comfortable. [Means for solving the problem]

[0006] An air conditioning system that is one aspect of the present disclosure is an air conditioning system that conditions the air of a conditioned space, and includes: a skin temperature acquisition unit that acquires skin temperature information indicating the skin temperature of a subject present in the conditioned space; a slope derivation unit that derives slope information indicating the slope of change in the skin temperature based on the skin temperature information; a reference range setting unit that sets a reference range that is a temperature range that includes a skin temperature that the subject feels comfortable at; and a setting information update unit that updates setting information that determines the control state of the air conditioning system based on the relationship between the skin temperature information and the reference range and the slope information. [Effects of the Invention]

[0007] According to the present disclosure, air conditioning control can be implemented to maintain a skin temperature that a subject feels comfortable at. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing one embodiment of an installation state of an air conditioning system. [Figure 2] 2 is a block diagram showing the functional configuration of the biometric information acquisition device and the air conditioner. FIG. [Figure 3] 10 is a graph showing a first example of the relationship between changes in skin temperature, the reference range, and setting information. [Figure 4] 10 is a graph showing a second example of the relationship between the transition of skin temperature, the reference range, and the setting information. [Figure 5] 10 is a graph showing a third example of the relationship between the transition of skin temperature, the reference range, and the setting information. [Figure 6] 10 is a graph showing a fourth example of the relationship between changes in skin temperature, the reference range, and setting information. [Figure 7] 10 is a graph showing a fifth example of the relationship between changes in skin temperature, the reference range, and setting information. [Figure 8] 10 is a graph showing a sixth example of the relationship between the change in skin temperature and the reference range. [Figure 9] 10 is a graph showing a seventh example of the relationship between changes in skin temperature and the reference range. [Figure 10]4 is a flowchart showing an example of the flow of operation of the air conditioning system. [Figure 11] FIG. 10 is a diagram showing another example of an installation state of an air conditioning system. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of a biometric information acquisition device and an air conditioning system according to the present disclosure will be described with reference to the drawings. Note that the following embodiments are presented as examples to explain the present disclosure and are not intended to limit the present disclosure. For example, the shapes, structures, materials, components, relative positional relationships, connection states, numerical values, mathematical formulas, the content of each step in a method, and the order of each step shown in the following embodiments are examples and may include content not described below. Furthermore, while geometric expressions such as parallel and orthogonal may be used, these expressions do not indicate mathematical precision and include substantially acceptable errors, deviations, etc. Furthermore, expressions such as simultaneous and identical also include substantially acceptable ranges.

[0010] The drawings are schematic diagrams in which emphasis, omission, or adjustment of proportions has been appropriately made to explain the present disclosure, and differ from the actual shapes, positional relationships, and proportions. The X-axis, Y-axis, and Z-axis shown in the drawings represent Cartesian coordinates arbitrarily set for the purpose of illustrating the drawings. In other words, the Z-axis is not necessarily an axis along the vertical direction, and the X-axis and Y-axis are not necessarily located within a horizontal plane.

[0011] In addition, multiple inventions may be collectively described below as one embodiment, and some of the content described below may be described as optional components related to the present disclosure.

[0012] 1 is a diagram showing one mode of installation of an air conditioning system 100. The air conditioning system 100 is a system that conditions the air of an air-conditioned space 200, and includes a biometric information acquisition device 110 and an air conditioner 160. In the present embodiment, the air conditioning system 100 is attached to a wall surface that surrounds the air-conditioned space 200, and is a system that adjusts the environment within the air-conditioned space 200 to one that a subject 201 feels comfortable in.

[0013] 2 is a block diagram showing the functional configuration of the biometric information acquisition device 110 and the air conditioner 160. The biometric information acquisition device 110 is a device that acquires biometric information of a subject 201. The biometric information acquisition device 110 includes an acquisition-side processor 101 and an acquisition-side communication interface 115. The acquisition-side processor 101 executes a skin temperature acquisition program to realize a skin temperature acquisition unit 111 as a processing unit.

[0014] The skin temperature acquisition unit 111 is a processing unit that acquires skin temperature information indicating the skin temperature of the subject 201 present in the air-conditioned space 200. The sensor from which the skin temperature acquisition unit 111 acquires the skin temperature information is not limited. For example, the skin temperature acquisition unit 111 may acquire skin temperature information from an infrared sensor, a thermal camera, or the like. In this embodiment, the skin temperature acquisition unit 111 acquires the skin temperature information via communication from a wearable device 112 worn by the subject 201. The type of wearable device 112 is not limited, and examples include a wristwatch-type device as exemplified in this embodiment, a ring-type device worn on a finger, a necklace-type device worn around the neck, and the like. The inventors have found that acquiring skin temperature information from the peripheral parts of the subject 201 enables more accurate estimation of the thermal sensation of the subject 201. In other words, acquiring skin temperature information indicating the skin temperatures of the extremities of the subject's 201's hands and feet allows for accurate estimation of the thermal sensation, including hot, cold, comfortable, etc., felt by the subject 201. Therefore, it can be expected that the accuracy of estimating a thermal sensation will improve in the order of necklace type, wristwatch type, and ring type.

[0015] The biometric information acquisition device 110 may also include a so-called millimeter wave radar device that irradiates electromagnetic waves (millimeter waves) and measures the biometric information of the subject 201 based on the waves reflected from the subject 201 and outputs it as a signal, a digital camera that can acquire the state of the air-conditioned space 200 and the state of the subject 201, and a motion sensor such as a TOF (Time Of Flight) camera that can acquire the movement of the subject 201.

[0016] The acquisition-side communication interface 115 transmits the skin temperature information of the subject 201 acquired by the skin temperature acquisition unit 111 to the air conditioner 160. The communication may be wired or wireless. The acquisition-side communication interface 115 also outputs a signal transmitted from the wearable device 112 to the skin temperature acquisition unit 111.

[0017] The air conditioner 160 is a device that controls the air conditioning of the conditioned space 200 in, for example, a residence or an office building. An example of the air conditioner 160 is a so-called air conditioner that has cooling and heating functions. The air conditioning system 100 may additionally include a dehumidifier, humidifier, air purifier, space sterilization device, etc. as an air conditioner. The air conditioner 160 may be equipped with some or all of the cooling function, heating function, dehumidification function, humidification function, air purifier function, and space sterilization function in combination. In this embodiment, the air conditioner 160 is an air conditioner that includes an indoor unit 106 installed in the conditioned space 200 and an outdoor unit 107 installed outside the conditioned space 200, and includes an air conditioning control device 161.

[0018] The air conditioning control device 161 is a controller that controls the entire air conditioner 160. In this embodiment, the air conditioning control device 161 includes a conditioner-side processor 102, and by having the processor execute an air conditioning program, it realizes a slope derivation unit 164, a reference range setting unit 162, a setting information update unit 163, and an operation control unit 166 as processing units. In this embodiment, the air conditioning control device 161 realizes a memory unit 173 as a processing unit.

[0019] The slope derivation unit 164 derives slope information indicating the slope of the change in skin temperature based on the skin temperature information acquired by the skin temperature acquisition unit 111. The method by which the slope derivation unit 164 derives the slope information is not limited. For example, the slope derivation unit 164 may store multiple pieces of skin temperature information in the storage device 170 and derive the change in the skin temperature information per unit time as slope information based on the skin temperature information and the time at which the skin temperature information was acquired. Alternatively, the slope derivation unit 164 may derive the slope information by differentiating the skin temperature information.

[0020] The gradient derivation unit 164 may derive gradient information using a representative value (so-called moving representative value) obtained by statistically processing multiple pieces of skin temperature information acquired from the present time (current time) back to a predetermined time. Examples of the representative value include the average value, the median, the mode, and a standard deviation of 50.

[0021] The reference range setting unit 162 is a processing unit that sets a reference range, which is a temperature range that includes a skin temperature that the subject 201 feels comfortable at. The method for setting the reference range is not limited. For example, the reference range is set based on predetermined reference information. The reference information is information that reflects a temperature lower than the human core body temperature, such as 31°C. The reference range is set as a value ranging from the reference information minus the first temperature to the reference information plus the second temperature. Note that the first temperature and the second temperature may be the same or different.

[0022] The reference information may be a constant value or may vary. In this embodiment, the reference information varies depending on, for example, period information indicating which period a year is divided into when a year is divided into multiple periods such as spring, summer, autumn, and winter, or time zone information indicating which time zone a day is divided into multiple time zones such as morning, noon, evening, and night. The reference information may also vary depending on information about the subject 201, such as status information indicating the state of the subject 201 (e.g., rest, activity, wakefulness, sleep), activity amount information indicating the amount of activity of the subject 201, and biological information about the subject 201. The reference information may also vary depending on environmental information about the environment, such as outside temperature information obtained from the outside temperature sensor 172 or humidity information indicating the humidity in the air-conditioned space 200 or outside.

[0023] The pulse (heart rate) of the subject 201, the respiratory rate of the subject 201, the position of the subject 201, etc. can be acquired from a radar device provided in the biometric information acquisition device 110 via the acquisition-side information acquisition unit 171.

[0024] The setting information update unit 163 updates the setting information that determines the control state of the air conditioning system 100 based on the relationship between the skin temperature information acquired by the skin temperature acquisition unit 111 and the reference range set by the reference range setting unit 162, and on the slope information derived by the slope derivation unit 164. The operation of the setting information update unit 163 will be described in detail later.

[0025] The storage unit 173 is a processing unit that stores the skin temperature information, which is the time when the skin temperature indicated by the skin temperature information is within a reference range and the skin temperature information that is the extreme value, in the storage unit 170. In the present embodiment, the storage unit 173 acquires and holds a plurality of pieces of slope information derived by the slope derivation unit 164, and derives whether the skin temperature is the maximum or minimum, the time when the maximum or minimum occurred, and the extreme value by calculation, and stores them in the storage unit 170. The storage unit 173 may remove small increases and decreases (high frequency components) from the skin temperature information using a low-pass filter or the like.

[0026] The operation control unit 166 controls the operating state of the air conditioner 160 based on the setting information updated by the setting information update unit 163. Specifically, the operation control unit 166 transmits control parameters, parameter values, commands, etc. to at least one of the compressor 169, fan motor 167, louver motor 168, etc. provided in the air conditioner 160, and controls the operating state of the air conditioner 160.

[0027] The harmony device side communication interface 165 may communicate with the wearable device 112, a user terminal (so-called remote control terminal), etc. in addition to the biometric information acquisition device 110. The harmony device side communication interface 165 may also send and receive internet packets and communicate with a server or the like located on the cloud.

[0028] Next, a specific example of updating the setting information will be described. For example, as shown in FIG. 3, if the slope indicated by the slope information when the skin temperature indicated by the skin temperature information changes from outside the set reference range to within the reference range is equal to or greater than a first threshold, the setting information is updated to adjust the air conditioning capacity of the air conditioning system 100 so that the change in skin temperature is gentle. Similarly, if the slope when the skin temperature changes from higher than the reference range to within the reference range is equal to or greater than the first threshold, the setting information is updated to adjust the air conditioning capacity of the air conditioning system 100 so that the change in skin temperature is gentle. On the other hand, as shown in FIG. 4, if the slope when the skin temperature changes from outside the reference range to within the reference range is less than the first threshold, the setting information is maintained and the air conditioning capacity of the air conditioning system 100 is maintained constant. Examples of when the slope is equal to or greater than the first threshold include when the subject 201 starts exercising or eating.

[0029] 5, when the skin temperature indicated by the skin temperature information is within the reference range and the slope indicated by the slope information is equal to or greater than the second threshold, the setting information update unit 163 updates the setting information to adjust the air conditioning capacity of the air conditioning system 100 so that the change in skin temperature is gradual. Note that, as shown in FIG. 6, even if the slope is equal to or greater than the second threshold, if the direction of the slope is different from the direction of the slope derived immediately before, that is, if the skin temperature changes from rising to falling or from falling to rising, the setting information may be updated to the same information.

[0030] Furthermore, as shown in Figure 7, if the skin temperature indicated by the skin temperature information is within a reference range and the slope indicated by the slope information is constant or almost constant during a predetermined first period, the setting information update unit 163 updates the setting information so that the air conditioning capacity of the air conditioning system 100 changes gradually with the change in skin temperature.

[0031] Furthermore, the setting information updated by setting information update unit 163 when the slope of the skin temperature between time t2 when the skin temperature reached the upper limit of the reference range and the most recent (immediately preceding) time t1 when the skin temperature reached the minimum is equal to or greater than a third threshold, as shown in Fig. 8, differs from the setting information updated so that the direction of change in skin temperature is reversed when the slope of the skin temperature between time t2 when the skin temperature reached the upper limit of the reference range and the most recent (immediately preceding) time t1 when the skin temperature reached the minimum is less than the third threshold, as shown in Fig. 9. For example, the setting information updated when the slope from the minimum to the upper limit of the reference range is equal to or greater than the third threshold includes any of information to lower the set temperature of air conditioner 160 to a first temperature and to set the airflow to a first airflow that is stronger than the current airflow, information to maintain the set temperature and to set the airflow to a second airflow that is stronger than the first airflow, and information to set the set temperature to a second temperature that is lower than the first temperature. On the other hand, the setting information that is updated when the slope from the minimum to the upper limit of the standard range is less than the third threshold value includes information to set the set temperature to the first temperature and maintain the current airflow, or information to maintain the current set temperature and set the airflow to the first airflow.

[0032] Next, an example of the operation of the air conditioning system 100 will be described. Fig. 10 is a flowchart showing an example of the flow of the operation of the air conditioning system 100. When the air conditioning system 100 is started up, the reference range setting unit 162 sets a reference range (S101). Next, the skin temperature acquisition unit 111 acquires skin temperature information (S102). If the acquired skin temperature information is outside the reference range (S103, No), the setting information update unit 163 updates the setting information so that the skin temperature falls within the reference range (S104). For example, the setting information is updated depending on the magnitude of the difference between the skin temperature indicated by the acquired skin temperature information and the reference temperature range.

[0033] On the other hand, if the acquired skin temperature information is within the reference range (S103, Yes), the slope derivation unit 164 derives slope information based on the skin temperature information acquired by the skin temperature acquisition unit 111 (S105). If there is no change or almost no change in the skin temperature (S106, No), or if this state of no change or almost no change is maintained for a certain period of time (S107, No), the process returns to the step of acquiring skin temperature information again and deriving slope information (S105). If there is no change or almost no change is not maintained for a certain period of time (S107, Yes), the counter is reset (S108), and the process returns to the step of acquiring skin temperature information again and deriving slope information (S105).

[0034] If there is a change in skin temperature (S106, Yes), or if it is the first time or the counter has already been reset (S109, Yes), the initial skin temperature information when the change started is stored (S110). If there is a change in skin temperature (S106, Yes), or if it is not the first time or the counter has not already been reset (S109, No), the initial skin temperature information when the change started is not stored.

[0035] Next, if the direction of the gradient is not the same, that is, if the gradient changes from rising to falling or from falling to rising (S111, No), the counter is reset (S112), and the process returns to step S105, where skin temperature information is acquired again to derive gradient information. If the direction of the gradient is the same (S111, Yes), the counter is incremented (S113).

[0036] Next, if the skin temperature according to the newly acquired skin temperature information has not reached the upper or lower limit of the reference range (S114, No), the process returns to step S105, where skin temperature information is acquired again and slope information is derived. If the skin temperature according to the newly acquired skin temperature information has reached the upper or lower limit of the reference range (S114, Yes), the slope derivation unit 164 again derives slope information (S115). If the slope is equal to or greater than the third threshold (S116, Yes), for example, if the skin temperature of the subject 201 suddenly becomes hotter or colder, the setting information update unit 163 updates the setting information so that the air conditioning capacity of the air conditioning system 100 changes in the opposite direction to the change in skin temperature (S117). Specifically, one example is a case where the setting information is updated so that the amount of change in at least one of the control parameters of the air conditioner 160 is relatively large. On the other hand, if the slope is less than the third threshold (S116, No), for example, if the skin temperature of the subject 201 is only gradually heating up or cooling down, the setting information update unit 163 updates the setting information (S118) to adjust the air conditioning capacity of the air conditioning system 100 so that the direction of change in skin temperature gradually reverses. Specifically, one example is a case where the setting information is updated so that the amount of change in at least one of the control parameters of the air conditioner 160 is smaller than when the slope is equal to or greater than the first threshold. The air conditioning system 100 repeats (S105) to (S118) to maintain a state in which the subject 201 feels comfortable.

[0037] It should be noted that the present disclosure is not limited to the above-described embodiments. For example, the present disclosure may be embodied in another embodiment realized by any combination of the components described in this specification or by excluding some of the components. Furthermore, the present disclosure also includes modifications obtained by applying various modifications to the above-described embodiments that would occur to a person skilled in the art without departing from the spirit of the present disclosure, i.e., the meaning of the wording of the claims.

[0038] For example, although the above description has been given of a case where the skin temperature increases, the present disclosure is equally applicable to a case where the skin temperature decreases.

[0039] Furthermore, implementing a program corresponding to each process executed by the acquisition-side processor 101 and the harmonic processor 102 also constitutes an embodiment of the present disclosure. Of course, implementing a recording medium on which the program is recorded also constitutes an embodiment of the present disclosure.

[0040] Furthermore, as shown in FIG. 11, the biological information acquisition device 110 may be housed inside an air conditioner 160.

[0041] (summary) The air conditioning system 100 of the first embodiment is an air conditioning system 100 that conditions the air of the conditioned space 200, and includes a skin temperature acquisition unit 111 that acquires skin temperature information indicating the skin temperature of a subject 201 present in the conditioned space 200, a slope derivation unit 164 that derives slope information that indicates the slope of change in skin temperature based on the skin temperature information, a reference range setting unit 162 that sets a reference range that is a temperature range that includes a skin temperature that the subject 201 feels comfortable at, and a setting information update unit 163 that updates setting information that determines the control state of the air conditioning system 100 based on the relationship between the skin temperature information and the reference range and the slope information.

[0042] According to the first aspect, by updating the setting information that determines the control state of the air conditioning system 100 based on the relationship between the reference range, which is the range in which the subject feels comfortable, and the skin temperature, and on the change in the skin temperature, it is possible to perform control that maintains a situation in which the subject feels comfortable. Furthermore, it is possible to avoid excessive or unnecessary operation of the air conditioning system 100, which can contribute to energy conservation.

[0043] The second aspect of the air conditioning system 100 includes the first aspect, and when the slope indicated by the slope information when the skin temperature indicated by the skin temperature information moves from outside the set standard range into the standard range is equal to or greater than a first threshold, the setting information update unit 163 updates the setting information to adjust the air conditioning capacity of the air conditioning system 100 so that the change in skin temperature is gradual.

[0044] The third aspect of the air conditioning system 100 includes the first aspect or the second aspect, and when the skin temperature indicated by the skin temperature information is within a reference range and the slope indicated by the slope information is equal to or greater than a second threshold, the setting information update unit 163 updates the setting information to increase the air conditioning capacity of the air conditioning system 100 so that the change in skin temperature is gradual.

[0045] The fourth aspect of the air conditioning system 100 includes any of the first to third aspects, and when the skin temperature indicated by the skin temperature information is within a reference range and the slope indicated by the slope information is constant or almost constant over a predetermined first period, the setting information update unit 163 updates the setting information to increase the air conditioning capacity of the air conditioning system 100 so that the change in skin temperature is gradual.

[0046] The fifth aspect of the air conditioning system 100 includes any of the first to fourth aspects, and is provided with a memory unit 173 that stores the time when the skin temperature indicated by the skin temperature information is within a standard range and the skin temperature became extremely maximum or minimum, as well as the skin temperature information, and the setting information update unit 163 has different setting information that updates the air conditioning capacity of the air conditioning system 100 so that the direction of change in skin temperature is reversed depending on whether the slope between the time when the skin temperature reached the upper limit of the standard range and the most recent time when the skin temperature became extremely minimum, or the slope between the time when the skin temperature reached the lower limit of the standard range and the most recent time when the skin temperature became extremely maximum, is less than a third threshold.

[0047] The sixth aspect of the air conditioning system 100 includes the fifth aspect, and the setting information update unit 163 updates the setting information related to the temperature and air volume when the slope is equal to or greater than a third threshold, and updates the setting information related to the temperature or air volume when the slope is less than the third threshold.

[0048] According to any one of the second to sixth aspects, the setting information can be updated appropriately in response to changes in skin temperature, and an environment in which the subject feels comfortable can be maintained. [Industrial Applicability]

[0049] The present disclosure can be used in an air conditioning system 100 that performs control based on the skin temperature of a subject 201, etc. [Explanation of symbols]

[0050] 100 Air Conditioning System 101 Acquiring Processor 102 Harmonizer side processor 106 Indoor unit 107 Outdoor unit 110 Biometric information acquisition device 111 Skin temperature acquisition section 112 Wearable Devices 115 Acquisition side communication interface 160 Air conditioner 161 Air conditioning control device 162 Reference range setting section 163 Setting information update section 164 Incline derivation part 165 Harmonizer side communication interface 166 Operation control unit 167 Fan motor 168 Louver motor 169 Compressor 170 Storage device 171 Acquisition side information acquisition unit 172 Outside air temperature sensor 173 Storage section 200 Conditioned space 201 Target

Claims

1. An air conditioning system that conditions air in a space to be air-conditioned, a skin temperature acquisition unit that acquires skin temperature information indicating the skin temperature of a subject present in the air-conditioned space; a gradient deriving unit that derives gradient information indicating a gradient of change in the skin temperature based on the skin temperature information; a reference range setting unit that sets a reference range that is a temperature range including a skin temperature that the subject feels comfortable at; a setting information update unit that updates setting information that determines a control state of the air conditioning system based on the relationship between skin temperature information and a reference range and on slope information; An air conditioning system comprising:

2. The setting information update unit If the slope indicated by the slope information when the skin temperature indicated by the skin temperature information enters the set reference range from outside the set reference range is equal to or greater than a first threshold, the setting information is updated so that the air conditioning capacity of the air conditioning system is adjusted to cause a gradual change in the skin temperature. The air conditioning system of claim 1 .

3. The setting information update unit If the skin temperature indicated by the skin temperature information is within a reference range and the slope indicated by the slope information is equal to or greater than a second threshold, the setting information for the air conditioning capacity of the air conditioning system is updated so that the change in skin temperature becomes gradual.

3. The air conditioning system according to claim 1 or 2.

4. The setting information update unit If the skin temperature indicated by the skin temperature information is within a reference range and the slope indicated by the slope information is constant or almost constant during a predetermined first period, the setting information for the air conditioning capacity of the air conditioning system is updated so that the change in skin temperature becomes gradual.

3. The air conditioning system according to claim 1 or 2.

5. a memory unit for storing the time when the skin temperature indicated by the skin temperature information is within a reference range and the skin temperature information, and the time when the skin temperature becomes maximum or minimum; The setting information update unit The setting information for updating the air conditioning capacity of the air conditioning system so that the direction of change in skin temperature is reversed varies depending on whether the slope between the time when the skin temperature reached the upper limit of the reference range and the most recent time when the skin temperature reached its minimum, or the slope between the time when the skin temperature reached the lower limit of the reference range and the most recent time when the skin temperature reached its maximum, is less than a third threshold.

3. The air conditioning system according to claim 1 or 2.

6. The setting information update unit If the gradient is equal to or greater than a third threshold, update setting information related to temperature and air volume; If the gradient is less than a third threshold, update the setting information related to the temperature or the air volume. The air conditioning system according to claim 5.

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