Air conditioner and control method thereof

Abstract

The application discloses an air conditioner and a control method thereof. The air conditioner comprises a human body temperature detection device, an indoor temperature detection device and a controller. The human body temperature detection device is used for detecting the face temperature of a target user. The indoor temperature detection device is used for detecting the indoor environment temperature. The controller is configured to input the face temperature and the indoor environment temperature into a user individual temperature and cold and warm feeling decision tree model, determine the temperature and cold and warm feeling state of the target user according to the output value of the user individual temperature and cold and warm feeling decision tree model, adjust the current set target temperature according to the temperature and cold and warm feeling state, and control the air conditioner to operate according to the adjusted target temperature. At least six layers of temperature decision condition sets configured in the user individual temperature and cold and warm feeling decision tree model constitute multiple temperature judgment branches. The air conditioner and the control method thereof can meet the individual user comfort requirement and improve the comfort of the air conditioner.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioners, and in particular to an air conditioner and a control method of the air conditioner. BACKGROUND

[0002] Air conditioners are widely used in people's lives, and play an important role in indoor temperature regulation, which can provide a healthy and comfortable indoor environment for users to meet the needs of normal work, life and study.

[0003] Currently, the comfort is usually designed by setting a single temperature index, or by using a specified single temperature index and a specified single humidity index, so as to meet the comfort needs of most groups.

[0004] However, due to the difference in individual comfort needs, the single temperature and single humidity index adjustment cannot effectively meet the requirements of people on comfort, and cannot meet the differentiated and personalized thermal comfort control requirements of different users. SUMMARY

[0005] The present disclosure aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present disclosure is to provide an air conditioner which can meet the differentiated and personalized thermal comfort needs of different users.

[0006] Another object of the present disclosure is to provide a control method of the air conditioner.

[0007] To achieve the above object, the air conditioner of the first aspect of the present disclosure comprises: a human body temperature detection device for detecting the face temperature of a target user; an indoor temperature detection device for detecting the indoor environment temperature; a controller connected with the human body temperature detection device and the indoor temperature detection device, the controller being configured to: input the face temperature and the indoor environment temperature into a user individual temperature cold and warm sensation decision tree model, determine the temperature cold and warm sensation state of the target user according to the output value of the user individual temperature cold and warm sensation decision tree model, adjust the current set target temperature according to the temperature cold and warm sensation state, and control the air conditioner to operate according to the adjusted target temperature, wherein the user individual temperature cold and warm sensation decision tree model is configured with at least six layers of temperature decision condition sets, and the at least six layers of temperature decision condition sets constitute a plurality of temperature judgment branches, wherein the first layer of temperature decision condition set comprises a decision condition based on one indoor environment temperature, the second layer of temperature decision condition set comprises a decision condition based on one face temperature and one indoor environment temperature, the third layer of temperature decision condition set comprises a decision condition based on one face temperature and three indoor environment temperatures, the fourth layer of temperature decision condition set comprises a decision condition based on five face temperatures and three indoor environment temperatures, the fifth layer of temperature decision condition set comprises a decision condition based on eight face temperatures and five indoor environment temperatures, and the sixth layer of temperature decision condition set comprises a decision condition based on nine face temperatures and eleven indoor environment temperatures.

[0008] A control method for an air conditioner according to a second aspect of this disclosure includes: receiving a target user's facial temperature and an indoor ambient temperature; inputting the facial temperature and the indoor ambient temperature into a user's individual temperature and coldness decision tree model, wherein the user's individual temperature and coldness decision tree model is configured with at least six layers of temperature decision condition sets, the at least six layers of temperature decision condition sets constituting multiple temperature determination branches, wherein the first layer of temperature decision condition set includes: a decision condition based on one of the indoor ambient temperatures, the second layer of temperature decision condition set includes: a decision condition based on one of the facial temperatures and one of the indoor ambient temperatures, the third layer of temperature decision condition set includes: a decision condition based on one of the facial temperatures and one of the indoor ambient temperatures, and so on. The decision-making conditions are based on facial temperature and three indoor ambient temperatures. The fourth-level temperature decision-making condition set includes five facial temperatures and three indoor ambient temperatures. The fifth-level temperature decision-making condition set includes eight facial temperatures and five indoor ambient temperatures. The sixth-level temperature decision-making condition set includes nine facial temperatures and eleven indoor ambient temperatures. The user's temperature and cold sensation state is determined based on the output value of the individual user's temperature and cold sensation decision tree model. The current set target temperature is adjusted according to the temperature and cold sensation state, and the air conditioner is controlled to operate according to the adjusted target temperature.

[0009] The air conditioner and its control method of this disclosure adjust the target temperature by using a user-specific temperature and coldness decision tree model established based on big data and artificial intelligence technology. This can compensate for the shortcomings of the PMV (Predicted Mean Vote) comfort prediction model based on the general population, which weakens individual differences. Furthermore, it not only considers that the user's facial temperature can experience the user's current temperature and coldness, but also that the indoor ambient temperature will affect the user's temperature and coldness experience. Therefore, the air conditioner inputs the facial temperature and indoor ambient temperature into the user-specific temperature and coldness decision tree model, thereby meeting the temperature and coldness comfort of the target user, improving the personalized and differentiated needs of the user, and improving the comfort of the air conditioner.

[0010] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0011] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0012] Figure 1 This is a schematic diagram of the refrigeration cycle system of an air conditioner according to an embodiment of the present disclosure;

[0013] Figure 2 is a block diagram of an air conditioner according to an embodiment of the present disclosure;

[0014] Figure 3 is a flowchart of modeling a user individual temperature and coldness decision tree model based on big data artificial intelligence technology according to an embodiment of the present disclosure;

[0015] Figure 4 is a schematic diagram of partial configuration of a user individual temperature and coldness decision tree model according to an embodiment of the present disclosure;

[0016] Figure 5 is a schematic diagram of partial configuration of a user individual temperature and coldness decision tree model according to another embodiment of the present disclosure;

[0017] Figure 6 is a schematic diagram of partial configuration of a user individual temperature and coldness decision tree model according to a further embodiment of the present disclosure;

[0018] Figure 7 is a schematic diagram of partial configuration of a user individual temperature and coldness decision tree model according to another embodiment of the present disclosure;

[0019] Figure 8 is a flowchart of overall operation logic of air conditioner comfort control according to an embodiment of the present disclosure;

[0020] Figure 9 is a flowchart of running a user individual comfort mode according to an embodiment of the present disclosure;

[0021] Figure 10 is a schematic diagram of an addressing process in a cooling mode according to an embodiment of the present disclosure;

[0022] Figure 11 is a schematic diagram of an addressing process in a heating mode according to an embodiment of the present disclosure;

[0023] Figure 12 is a flowchart of a control method of a TMS comfort mode according to an embodiment of the present disclosure;

[0024] Figure 13 is a schematic diagram of a humidity change curve according to an embodiment of the present disclosure;

[0025] Figure 14 is a method of indoor fan comfort control when the air conditioner operating mode is a cooling mode according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the drawings, which are for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present disclosure.

[0027] The air conditioner in the present disclosure performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to air that has been adjusted and heat-exchanged. As shown in FIG. 1, a schematic diagram of a refrigeration cycle system of an air conditioner according to an embodiment of the present disclosure. Figure 1

[0028] The compressor compresses refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0029] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by heat-exchanging with a material to be cooled using latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner can adjust the temperature of an indoor space.

[0030] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger, the indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0031] The indoor heat exchanger and the outdoor heat exchanger are used as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

[0032] In order to improve user individual comfort, the embodiments of the present disclosure improve the performance of the air conditioner, and propose an air conditioner and a control method thereof, which can meet the comfort needs of different user individuals.

[0033] The following describes an air conditioner according to an embodiment of the present disclosure. Figures 2-14 An air conditioner according to an embodiment of the present disclosure is described.​

[0034] like Figure 2 The diagram shown is a block diagram of an air conditioner according to an embodiment of the present disclosure. The air conditioner 1 of this embodiment includes a human body temperature detection device 10, an indoor temperature detection device 20, and a controller 30. It also includes other air conditioner system components, such as... Figure 1 The refrigerant circulation system shown.

[0035] The human body temperature detection device 10 is used to detect the facial temperature of the target user. In this embodiment, the human body temperature detection device 10 may employ an infrared detection device, such as an infrared camera, to collect the temperature of the exposed parts of the target user, such as facial temperature.

[0036] The indoor temperature detection device 20 is used to detect the indoor ambient temperature. Specifically, a temperature sensor can be installed on the indoor unit casing to collect the indoor air temperature, i.e., the indoor ambient temperature, or a temperature sensor can be installed in other locations indoors, or an auxiliary device such as an intelligent robot can be used to detect the indoor ambient temperature and send the collected indoor ambient temperature data to the air conditioner controller.

[0037] The controller 30 is connected to the human body temperature detection device 10 and the indoor temperature detection device 20. The controller 30 can pre-store the user's individual temperature and coldness decision tree model. This model is pre-trained, generated, detected and stored in the controller 30. The controller 30 can retrieve the model at any time when making relevant decisions.

[0038] In a specific embodiment, facial temperature includes forehead temperature, eye temperature, nose temperature, and cheek temperature; the controller is configured to record the forehead temperature, eye temperature, nose temperature, and cheek temperature of the target user within a preset time period, calculate the average forehead temperature, average eye temperature, average nose temperature, and average cheek temperature within the preset time period, and perform a weighted calculation on the average forehead temperature, average eye temperature, average nose temperature, and average cheek temperature to obtain the average facial temperature, wherein the weight of the average forehead temperature is greater than the weight of the average eye temperature, which is greater than the weight of the average nose temperature, which is greater than the weight of the average cheek temperature.

[0039] The following is an explanation of the individual user's temperature and coldness decision tree model.

[0040] In this embodiment, the individual user temperature and coldness decision tree model is a temperature and coldness prediction and identification model established based on human physiological parameters and environmental parameters using big data artificial intelligence technology to address the different thermal comfort needs of individual users. It learns the temperature and coldness change patterns of individual users, accurately identifies individual user thermal comfort needs, and performs personalized thermal comfort control to meet the differentiated and personalized thermal comfort control requirements of different individual users.

[0041] As shown in Figure 3 Fig. 3 is a modeling flow of establishing a user individual temperature cold sensation decision tree model based on big data artificial intelligence technology according to an embodiment of the present disclosure.

[0042] Specifically, first, data collection is performed, and training data and testing can be collected in a laboratory through infrared equipment, for example, collecting skin temperatures such as facial temperatures of different people including the elderly, children, men, women, etc. in different seasons. It can be understood that different people in different seasons can reflect different human thermal sensations, metabolic rates, clothing thermal resistances, and environmental states, etc.

[0043] Secondly, model training is performed, and training data model screening and debugging optimization are utilized. Specifically, the training data is input into an initial model, and then the initial model is debugged and optimized according to the model output result, so that the model output data can be closer to the real situation.

[0044] Thirdly, a model is generated. Specifically, the optimal model output of training is selected.

[0045] Finally, the model is predicted, and the model accuracy is obtained by predicting the test data. For example, in the embodiment of the present disclosure, the accuracy of the user individual temperature cold sensation decision tree model can reach more than 80%.

[0046] In the embodiment, the user individual temperature cold sensation decision tree model reaching the expectation can be stored in the storage unit of the controller 30 of the air conditioner 1 in advance. The user individual temperature cold sensation decision tree model of the embodiment of the present disclosure is configured with at least six layers of temperature decision condition sets, and the at least six layers of temperature decision condition sets constitute a plurality of temperature determination branches. The first layer of temperature decision condition set includes a decision condition based on one indoor environment temperature, the second layer of temperature decision condition set includes a decision condition based on one facial temperature and one indoor environment temperature, the third layer of temperature decision condition set includes a decision condition based on one facial temperature and three indoor environment temperatures, the fourth layer of temperature decision condition set includes a decision condition based on five facial temperatures and three indoor environment temperatures, the fifth layer of temperature decision condition set includes a decision condition based on eight facial temperatures and five indoor environment temperatures, and the sixth layer of temperature decision condition set includes a decision condition based on nine facial temperatures and eleven indoor environment temperatures. For example, Figures 4-7Figures respectively are schematic diagrams of parts of a user individual thermal sensation decision tree model according to an embodiment of the present disclosure, which is similar to a tree in shape, with left branches representing true and right branches representing false, and a series of judgments are made each time until no longer branching to output the final result. In some embodiments, the user individual thermal sensation decision tree model can include at least six layers of temperature decision condition sets and forty-nine temperature judgment branches composed of the at least six layers of temperature decision condition sets, each of which can have the same or different temperature decision conditions. Wherein each branch of the model performs an independent thermal sensation judgment, each temperature judgment branch can output a corresponding thermal sensation prediction result, and the final value of the thermal sensation judgment, i.e. the output value of the user individual thermal sensation decision tree model, can be -1 (cold), 0 (neutral), or 1 (hot), so that the current thermal sensation state of the user can be determined according to the output value of the user individual thermal sensation decision tree model.

[0047] It can be understood that, Figures 4-7 The user individual thermal sensation decision tree model shown is only an example of a model of an embodiment of the present disclosure, and other suitable decision tree models that meet expectations can also be used based on the results of model training optimization and testing.

[0048] Further, in an embodiment of the present disclosure, not only the facial temperature of the user individual can reflect the current thermal sensation of the user, but also the indoor environment temperature can affect the thermal sensation of the user, so that the facial temperature and the indoor environment temperature are input into the user individual thermal sensation decision tree model, the thermal sensation state of the target user is determined according to the output value of the user individual thermal sensation decision tree model, the current set target temperature is adjusted according to the thermal sensation state, and the air conditioner is controlled to operate according to the adjusted target temperature, so as to meet the thermal sensation comfort of the target user individual, improve the individualization and differentiation needs of the user individual, and improve the comfort of the air conditioner.

[0049] Wherein, the current set target temperature can be the temperature set by the user through the control terminal of the air conditioner, such as a remote controller, a wire controller, or an air conditioner APP loaded on a mobile intelligent device when the user starts the user individual comfort mode, which is not specifically limited here.

[0050] The air conditioner 1 of an embodiment of the present disclosure adjusts the target temperature by using the user individual thermal sensation decision tree model established based on big data and artificial intelligence technology, which can make up for the deficiency of the PMV prediction comfort model based on the general population that weakens individual differences, so that the air conditioner 1 not only meets the comfort needs of the general population, but also realizes the individual comfort needs of a single family user.

[0051] Specifically, when air conditioner 1 operates in the user's individual comfort mode, for example, when there is only one person in the room, the human body temperature detection device 10 collects the target user's facial temperature in real time, the indoor temperature detection device 20 collects the indoor ambient temperature in real time, and the controller 30 receives the temperature data and calls the user's individual temperature and coldness decision tree model. It compares the facial temperature and indoor ambient temperature with the temperature decision condition set of each layer in the multiple temperature decision branches of the user's individual temperature and coldness decision tree model to determine the target temperature decision branch. Each temperature decision branch in the model executes independently, obtaining the output value of the target temperature decision branch corresponding to the user's individual temperature and coldness decision tree model. The temperature and coldness state corresponding to the output value is taken as the target user's temperature and coldness state. For example, an output value of -1 indicates the user feels cold; an output value of 0 indicates the user is neither hot nor cold (neutral); and an output value of 1 indicates the user feels hot. Then, the target temperature is adjusted according to the user's current temperature and coldness state, and the compressor frequency, fan speed, and air guide direction of the air conditioner are adjusted according to the adjusted target temperature, thereby improving user comfort and meeting the user's personalized comfort needs.

[0052] The following reference Figures 4-7 The user's individual temperature and coldness decision tree model is shown to illustrate the process by which the controller 30 identifies the user's temperature and coldness state.

[0053] After the user activates the individual comfort model, the controller 30 acquires the facial temperature using T. 面部 Indoor ambient temperature is represented by T. 室内 Indicate, and will T 面部 and T 室内 Input user's individual temperature / coolness decision tree model, for example Figures 4-7 The tree model compares the temperature value with the temperature decision conditions in the model. Each temperature decision branch is executed independently until the model's output value is obtained, and the user's current temperature feeling state is determined based on the output value.

[0054] like Figures 4-7 As shown, each temperature determination branch is explained. In this embodiment, the user-specific temperature and coolness decision tree model uses indoor ambient temperature as the first-level temperature decision condition, facial temperature and indoor ambient temperature as the second-level temperature decision conditions, and further branches use different temperature determination conditions for identification. Specifically, in this embodiment, facial temperature and indoor ambient temperature have different temperatures under different decision conditions in the user-specific temperature and coolness decision tree model. For example, the threshold values ​​for each decision condition of facial temperature are between 32.63℃ and 37.10℃, and the threshold values ​​for each decision condition of indoor ambient temperature are between 15.95℃ and 30.45℃.

[0055] In some embodiments, such as Figure 4As shown, controller 30 is configured to: determine whether the indoor ambient temperature T is met. 室内 ≤T 室内设定1 If T is not satisfied 室内 ≤T 室内设定1 Then proceed to step ①, see details below. Figure 6 As shown. If T is satisfied... 室内 ≤T 室内设定1 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定2 , among which, T 室内设定2 <T 室内设定1 If T is not satisfied 室内 ≤T 室内设定2 Then proceed to step ②, see details below. Figure 5 As shown. If T is satisfied... 室内 ≤T 室内设定2 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定3 , among which, T 室内设定3 <T 室内设定2 If T is satisfied 室内 ≤T 室内设定3 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定4 , among which, T 室内设定4 <T 室内设定3 If T is satisfied 室内 ≤T 室内设定4 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定5 , among which, T 室内设定5 <T 室内设定4 If T is satisfied 室内 ≤T 室内设定5 If the target temperature determination branch is determined as the first temperature determination branch, and the output value of the first temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value (e.g., -1), then the target user's temperature and coldness state is "cold". That is, if the user currently feels the temperature is too low, the currently set target temperature is increased to improve the user's perceived temperature and increase comfort.

[0056] If T is not satisfied 室内 ≤T 室内设定5 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定1 If T is satisfied 面部 ≤T 面部设定1If the target temperature determination branch is determined as the second temperature determination branch, and the output value of the second temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value (e.g., -1), then the target user's temperature and coldness state is "cold". That is, if the user currently feels the temperature is too low, the currently set target temperature is increased to improve the user's perceived temperature and increase comfort.

[0057] If T is not satisfied 面部 ≤T 面部设定1 If the target temperature determination branch is determined to be the third temperature determination branch, and the output value of the third temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0058] In some embodiments, such as Figure 4 As shown, controller 30 is also configured to: if T is not satisfied 室内 ≤T 室内设定4 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定2 If T is satisfied 面部 ≤T 面部设定2 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定3 , among which, T 面部设定3 <T 面部设定2 If T is satisfied 面部 ≤T 面部设定3 If the target temperature determination branch is determined as the fourth temperature determination branch, and the output value of the fourth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value (e.g., -1), then the target user's temperature and coldness state is "cold". That is, if the user currently feels the temperature is too low, then the currently set target temperature is increased to improve the user's perceived temperature and increase comfort.

[0059] If T is not satisfied 面部 ≤T 面部设定3 If the target temperature determination branch is determined to be the fifth temperature determination branch, the output value of the fifth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1. In this case, the target user's temperature and coldness state is "cold". That is, if the user currently feels that the temperature is too low, the current target temperature is increased to improve the user's perceived temperature and increase comfort.

[0060] In some embodiments, such as Figure 4 As shown, controller 30 is also configured to: if T is not satisfied 面部 ≤T 面部设定2 Then, it is further determined whether the indoor ambient temperature T is met.室内 ≤T 室内设定6 , among which, T 室内设定4 <T 室内设定6 If T is satisfied 室内 ≤T 室内设定6 If the target temperature determination branch is determined to be the sixth temperature determination branch, and the output value of the sixth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0061] If T is not satisfied 室内 ≤T 室内设定6 If the target temperature determination branch is determined to be the seventh temperature determination branch, and the output value of the seventh temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0062] In some embodiments, such as Figure 4 As shown, controller 30 is also configured to: if T is not satisfied 室内 ≤T 室内设定3 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定4 If T is satisfied 面部 ≤T 面部设定4 If the target temperature determination branch is determined to be the eighth temperature determination branch, and the output value of the eighth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0063] If T is not satisfied 面部 ≤T 面部设定4 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定7 , among which, T 室内设定3 <T 室内设定7 If T is satisfied 室内 ≤T 室内设定7 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定5 , among which, T 面部设定4 <T 面部设定5 If T is satisfied 面部 ≤T 面部设定5If the target temperature determination branch is determined to be the ninth temperature determination branch, and the output value of the ninth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1, then the target user's temperature and coldness state is "cold". That is, if the user currently feels that the temperature is too low, the currently set target temperature will be increased to improve the user's perceived temperature and improve comfort.

[0064] If T is not satisfied 面部 ≤T 面部设定5 If the target temperature determination branch is determined to be the tenth temperature determination branch, the output value of the tenth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1. In this case, the target user's temperature and coldness state is "cold". That is, if the user currently feels that the temperature is too low, the current set target temperature is increased to improve the user's perceived temperature and increase comfort.

[0065] In some embodiments, such as Figure 4 As shown, controller 30 is also configured to: if T is not satisfied 室内 ≤T 室内设定7 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定8 , among which, T 室内设定7 <T 室内设定8 If T is satisfied 室内 ≤T 室内设定8 If the target temperature determination branch is determined to be the eleventh temperature determination branch, and the output value of the corresponding eleventh temperature determination branch of the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0066] If T is not satisfied 室内 ≤T 室内设定8 If the target temperature decision branch is determined to be the twelfth temperature decision branch, and the output value of the corresponding twelfth temperature decision branch of the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1, then the target user's temperature and coldness state is "cold". That is, if the user currently feels that the temperature is too low, the current set target temperature will be increased to improve the user's perceived temperature and increase comfort.

[0067] In some embodiments, such as Figure 5 As shown, controller 30 is configured to: if T is not satisfied 室内 ≤T 室内设定2 Then proceed with step ②, which specifically includes: determining whether the facial temperature T is met. 面部 ≤T 面部设定6 If T is satisfied 面部 ≤T 面部设定6Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定9 , among which, T 室内设定2 <T 室内设定9 If T is satisfied 室内 ≤T 室内设定9 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定10 , among which, T 室内设定10 <T 室内设定9 If T is satisfied 室内 ≤T 室内设定10 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定11 , among which, T 室内设定11 <T 室内设定10 If T is satisfied 室内 ≤T 室内设定11 If the target temperature decision branch is determined to be the thirteenth temperature decision branch, and the output value of the corresponding thirteenth temperature decision branch of the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1, then the target user's temperature and coldness state is "cold". That is, if the user currently feels the temperature is too low, the currently set target temperature will be increased to improve the user's perceived temperature and increase comfort.

[0068] If T is not satisfied 室内 ≤T 室内设定11 If the target temperature decision branch is determined to be the fourteenth temperature decision branch, and the output value of the fourteenth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0069] In some embodiments, such as Figure 5 As shown, controller 30 is also configured to: if T is not satisfied 室内 ≤T 室内设定10 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定12 , among which, T 室内设定10 <T 室内设定12 If T is satisfied 室内 ≤T 室内设定12 If the target temperature determination branch is determined to be the fifteenth temperature determination branch, and the output value of the fifteenth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1, then the target user's temperature and coldness state is "cold". That is, if the user currently feels that the temperature is too low, the current set target temperature will be increased to improve the user's perceived temperature and increase comfort.

[0070] If T is not satisfied 室内 ≤T 室内设定12 If the target temperature determination branch is determined to be the sixteenth temperature determination branch, and the output value of the sixteenth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1, then the target user's temperature and coldness state is "cold". That is, if the user currently feels that the temperature is too low, the current set target temperature will be increased to improve the user's perceived temperature and improve comfort.

[0071] In some embodiments, such as Figure 5 As shown, controller 30 is configured to: if T is not satisfied 室内 ≤T 室内设定9 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定13 , among which, T 室内设定9 <T 室内设定13 If T is not satisfied 室内 ≤T 室内设定13 If the target temperature decision branch is determined to be the seventeenth temperature decision branch, and the output value of the seventeenth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0072] If T is satisfied 室内 ≤T 室内设定13 Then, further determine whether the facial temperature T is satisfied. 面部 ≤T 面部设定7 , among which, T 面部设定7 <T 面部设定6 If T is satisfied 面部 ≤T 面部设定7 If the target temperature determination branch is determined to be the eighteenth temperature determination branch, the output value of the eighteenth temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value. For example, if the output is 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0073] If T is not satisfied 面部 ≤T 面部设定7 If the target temperature decision branch is determined to be the nineteenth temperature decision branch, and the output value of the nineteenth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0074] In some embodiments, such asFigure 5 As shown, controller 30 is configured to: if T is not satisfied 面部 ≤T 面部设定6 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定8 , among which, T 面部设定6 <T 面部设定8 If T is satisfied 面部 ≤T 面部设定8 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定9 , among which, T 面部设定9 <T 面部设定8 If T is satisfied 面部 ≤T 面部设定9 Further determine whether the indoor ambient temperature T is met. 室内 ≤T 室内设定14 , among which, T 室内设定2 <T 室内设定14 If T is satisfied 室内 ≤T 室内设定14 If the target temperature decision branch is determined as the twentieth temperature decision branch, and the output value of the corresponding twentieth temperature decision branch of the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0075] If T is not satisfied 室内 ≤T 室内设定14 If the target temperature decision branch is determined to be the twenty-first temperature decision branch, and the output value of the twenty-first temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0076] In some embodiments, such as Figure 5 As shown, controller 30 is configured to: if T is not satisfied 面部 ≤T 面部设定9 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定10 , among which, T 面部设定9 <T 面部设定10 If T is satisfied 面部 ≤T 面部设定10If the target temperature decision branch is determined to be the twenty-second temperature decision branch, and the output value of the twenty-second temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0077] If T is not satisfied 面部 ≤T 面部设定10 If the target temperature decision branch is determined to be the twenty-third temperature decision branch, and the output value of the twenty-third temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0078] In some embodiments, such as Figure 5 As shown, controller 30 is configured to: if T is not satisfied 面部 ≤T 面部设定8 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定11 , among which, T 面部设定8 <T 面部设定11 If T is not satisfied 面部 ≤T 面部设定11 If the target temperature decision branch is determined to be the twenty-fourth temperature decision branch, the output value of the twenty-fourth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value. For example, if the output is 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0079] If T is satisfied 面部 ≤T 面部设定11 Further determine whether the indoor ambient temperature T is met. 室内 ≤T 室内设定15 , among which, T 室内设定2 <T 室内设定15 If T is satisfied 室内 ≤T 室内设定15 If the target temperature decision branch is determined to be the 25th temperature decision branch, and the output value of the corresponding 25th temperature decision branch of the user's individual temperature and coldness decision tree model is obtained as a "cold" output value, for example, -1, then the target user's temperature and coldness state is "cold". That is, if the user currently feels the temperature is too low, the currently set target temperature will be increased to improve the user's perceived temperature and increase comfort.

[0080] If T is not satisfied 室内 ≤T 室内设定15If the target temperature determination branch is determined to be the 26th temperature determination branch, and the output value of the 26th temperature determination branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the currently set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0081] In some embodiments, such as Figure 6 As shown, controller 30 is configured to: if T is not satisfied 室内 ≤T 室内设定1 Then execute step ①, which specifically includes: determining whether the facial temperature T is met. 面部 ≤T 面部设定12 If T is not satisfied 面部 ≤T 面部设定12 Then proceed to step ③, see details below. Figure 7 As shown. If T is satisfied... 面部 ≤T 面部设定12 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定16 , among which, T 室内设定1 <T 室内设定16 If T is satisfied 室内 ≤T 室内设定16 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定13 , among which, T 面部设定13 <T 面部设定12 If T is satisfied 面部 ≤T 面部设定13 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定14 , among which, T 面部设定14 <T 面部设定13 If T is satisfied 面部 ≤T 面部设定14 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定17 , among which, T 室内设定17 <T 室内设定16 If T is satisfied 室内 ≤T 室内设定17 If the target temperature decision branch is determined to be the 27th temperature decision branch, and the output value of the 27th temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0082] If T is not satisfied 室内 ≤T室内设定17 If the target temperature determination branch is determined to be the 28th temperature determination branch, and the output value of the corresponding 28th temperature determination branch of the user's individual temperature and cold perception decision tree model is obtained as a "hot" output value, for example, an output of 1, then the target user's temperature and cold perception state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0083] In some embodiments, such as Figure 6 As shown, controller 30 is configured to: if T is not satisfied 面部 ≤T 面部设定14 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定18 , among which, T 室内设定18 <T 室内设定16 If T is satisfied 室内 ≤T 室内设定18 If the target temperature decision branch is determined to be the 29th temperature decision branch, and the output value of the 29th temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value, for example, an output of 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0084] If T is not satisfied 室内 ≤T 室内设定18 If the target temperature decision branch is determined to be the thirtieth temperature decision branch, and the output value of the corresponding thirtieth temperature decision branch of the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0085] In some embodiments, such as Figure 6 As shown, controller 30 is configured to: if T is not satisfied 面部 ≤T 面部设定13 Then, further determine whether the facial temperature T is satisfied. 面部 ≤T 面部设定15 , among which, T 面部设定13 <T 面部设定15 If T is satisfied 面部 ≤T 面部设定15 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定19 , among which, T 室内设定19 <T 室内设定16 If T is satisfied 室内 ≤T 室内设定19If the target temperature decision branch is determined to be the thirty-first temperature decision branch, and the output value of the thirty-first temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0086] If T is not satisfied 室内 ≤T 室内设定19 If the target temperature decision branch is determined to be the thirty-second temperature decision branch, and the output value of the thirty-second temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value (e.g., an output of 1), then the target user's temperature and coldness state is "hot". That is, if the user currently feels the temperature is too high, the currently set target temperature will be lowered to reduce the user's perceived temperature and improve comfort.

[0087] In some embodiments, such as Figure 6 As shown, controller 30 is configured to: if T is not satisfied 面部 ≤T 面部设定15 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定20 , among which, T 室内设定20 <T 室内设定16 If T is satisfied 室内 ≤T 室内设定20 If the target temperature decision branch is determined to be the 33rd temperature decision branch, and the output value of the corresponding 33rd temperature decision branch of the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0088] If T is not satisfied 室内 ≤T 室内设定20 If the target temperature decision branch is determined to be the thirty-fourth temperature decision branch, and the output value of the thirty-fourth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., the output is 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0089] In some embodiments, such as Figure 6 As shown, air conditioner 30 is also configured to: if T is not met 室内 ≤T 室内设定16 Then, further determine whether the facial temperature T is satisfied. 面部 ≤T 面部设定16 , among which, T 面部设定16 <T面部设定12 ; if T 面部 ≤ T 面部设定16 , it is determined that the target temperature determination branch is the thirty-fifth temperature determination branch, and the output value of the user individual thermal sensation decision tree model corresponding to the thirty-fifth temperature determination branch is a neutral output value, for example, 0, so that the thermal sensation state of the target user is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, that is, the air conditioner can currently meet the individual comfort demand of the user.

[0090] If T 面部 ≤ T 面部设定16 , it is further determined whether T 面部 ≤ T 面部设定17 , where T 面部设定17 <T 面部设定16 ; if T 面部 ≤ T 面部设定17 , it is determined that the target temperature determination branch is the thirty-sixth temperature determination branch, and the output value of the user individual thermal sensation decision tree model corresponding to the thirty-sixth temperature determination branch is a neutral output value, for example, 0, so that the thermal sensation state of the target user is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, that is, the air conditioner can currently meet the individual comfort demand of the user.

[0091] If T 面部 ≤ T 面部设定17 , it is further determined whether T 室内 ≤ T 室内设定21 , where T 室内设定21 <T 室内设定16 ; if T 室内 ≤ T 室内设定21 , it is determined that the target temperature determination branch is the thirty-seventh temperature determination branch, and the output value of the user individual thermal sensation decision tree model corresponding to the thirty-seventh temperature determination branch is a hot bias output value, for example, 1, so that the thermal sensation state of the target user is hot bias. That is, the user currently feels that the temperature is too high, and at this time, the current set target temperature is reduced to reduce the user's body temperature and improve comfort.

[0092] If T 室内 ≤ T 室内设定21 , it is determined that the target temperature determination branch is the thirty-eighth temperature determination branch, and the output value of the user individual thermal sensation decision tree model corresponding to the thirty-eighth temperature determination branch is a hot bias output value, for example, 1, so that the thermal sensation state of the target user is hot bias. That is, the user currently feels that the temperature is too high, and at this time, the current set target temperature is reduced to reduce the user's body temperature and improve comfort.

[0093] In some embodiments, as Figure 7As shown, the controller 30 is configured to: if T 面部 ≤T 面部设定12 , execute the ③ flow, specifically including: judging whether the indoor environment temperature T 室内 ≤T 室内设定22 , wherein T 室内设定1 <T 室内设定22 ; if T 室内 ≤T 室内设定22 , further judging whether the indoor environment temperature T 室内 ≤T 室内设定23 , wherein T 室内设定23 <T 室内设定22 ; if T 室内 ≤T 室内设定23 , determining that the target temperature judgment branch is the thirty-ninth temperature judgment branch, and obtaining the output value of the user individual temperature-cold sensation decision tree model corresponding to the thirty-ninth temperature judgment branch as a neutral output value, for example, outputting 0, then the temperature-cold sensation state of the target user is neutral. That is, the user currently feels neither cold nor hot, at this time, the current set target temperature can be maintained, that is, the air conditioner can currently meet the individual comfort needs of the user.

[0094] If T 室内 ≤T 室内设定23 , further judging whether the facial temperature T 面部 ≤T 面部设定18 , wherein T 面部设定12 <T 面部设定18 ; if T 面部 ≤T 面部设定18 , further judging whether the facial temperature T 面部 ≤T 面部设定19 , wherein T 面部设定19 <T 面部设定18 ; if T 面部 ≤T 面部设定19 , determining that the target temperature judgment branch is the fortieth temperature judgment branch, and obtaining the output value of the user individual temperature-cold sensation decision tree model corresponding to the fortieth temperature judgment branch as a neutral output value, for example, outputting 0, then the temperature-cold sensation state of the target user is neutral. That is, the user currently feels neither cold nor hot, at this time, the current set target temperature can be maintained, that is, the air conditioner can currently meet the individual comfort needs of the user.

[0095] If T 面部 ≤T 面部设定19If the target temperature decision branch is determined to be the forty-first temperature decision branch, and the output value of the forty-first temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0096] In some embodiments, such as Figure 7 As shown, air conditioner 30 is also configured to: if T is not met 面部 ≤T 面部设定18 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定20 , among which, T 面部设定20 <T 面部设定18 If T is satisfied 面部 ≤T 面部设定20 If the target temperature decision branch is determined to be the forty-second temperature decision branch, the output value of the forty-second temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value. For example, if the output is 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0097] If T is not satisfied 面部 ≤T 面部设定20 If the target temperature decision branch is determined to be the forty-third temperature decision branch, and the output value of the forty-third temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a neutral output value (e.g., an output of 0), then the target user's temperature and coldness state is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, meaning the air conditioner can currently meet the user's individual comfort needs.

[0098] In some embodiments, such as Figure 7 As shown, air conditioner 30 is also configured to: if T is not met 室内 ≤T 室内设定22 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定21 , among which, T 面部设定12 <T 面部设定21 If T is satisfied 面部 ≤T 面部设定21 Then, it is further determined whether the indoor ambient temperature T is met. 室内 ≤T 室内设定24 , among which, T 室内设定24 <T 室内设定22 If T is satisfied 室内 ≤T 室内设定24 Then, further determine whether the facial temperature T is met. 面部 ≤T面部设定22 , among which, T 面部设定22 <T 面部设定21 If T is satisfied 面部 ≤T 面部设定22 If the target temperature decision branch is determined to be the forty-fourth temperature decision branch, the output value of the forty-fourth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value. For example, if the output is 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0099] If T is not satisfied 面部 ≤T 面部设定22 If the target temperature decision branch is determined to be the forty-fifth temperature decision branch, the output value of the forty-fifth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value. For example, if the output is 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0100] In some embodiments, such as Figure 7 As shown, air conditioner 30 is also configured to: if T is not met 室内 ≤T 室内设定24 Then, further determine whether the facial temperature T is met. 面部 ≤T 面部设定23 , among which, T 面部设定23 <T 面部设定21 If T is satisfied 面部 ≤T 面部设定23 If the target temperature decision branch is determined to be the forty-sixth temperature decision branch, the output value of the forty-sixth temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value. For example, if the output is 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature is lowered to reduce the user's perceived temperature and improve comfort.

[0101] If T is not satisfied 面部 ≤T 面部设定23 If the target temperature decision branch is determined to be the forty-seventh temperature decision branch, and the output value of the forty-seventh temperature decision branch corresponding to the user's individual temperature and coldness decision tree model is obtained as a "hot" output value, for example, an output of 1, then the target user's temperature and coldness state is "hot". That is, if the user currently feels that the temperature is too high, then the currently set target temperature will be lowered to reduce the user's perceived temperature and improve comfort.

[0102] In some embodiments, such as Figure 7 As shown, air conditioner 30 is also configured to: if T is not met 面部 ≤T 面部设定21 Then, further determine whether the facial temperature T is met.面部 ≤T 面部设定24 wherein, T 面部设定21 <T 面部设定24 If T 面部 ≤T 面部设定24 , the target temperature decision branch is determined as the forty-eighth temperature decision branch, and the output value of the user individual thermal sensation decision tree model corresponding to the forty-eighth temperature decision branch is obtained as a neutral output value, for example, 0, and the thermal sensation state of the target user is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, that is, the air conditioner can currently meet the individual comfort needs of the user.

[0103] If T 面部 ≤T 面部设定24 , the target temperature decision branch is determined as the forty-ninth temperature decision branch, and the output value of the user individual thermal sensation decision tree model corresponding to the forty-ninth temperature decision branch is obtained as a neutral output value, for example, 0, and the thermal sensation state of the target user is neutral. That is, the user currently feels neither cold nor hot, and at this time, the current set target temperature can be maintained, that is, the air conditioner can currently meet the individual comfort needs of the user.

[0104] The above is the process of determining the user thermal sensation state by using the user individual thermal sensation decision tree model as shown in Figures 4-7 It can be understood that the user individual thermal sensation recognition process of other models is similar to the above process, but the model levels, temperature decision branches, and temperature decision conditions of each node of each branch of the model are different from those of the model of the present disclosure.

[0105] Further, in some embodiments, in order to improve the accuracy of recognizing the current thermal sensation of the user based on the above user individual thermal sensation decision tree model, the controller 30 is further configured to periodically input the face temperature and the indoor environment temperature into the user individual thermal sensation decision tree model to obtain a preset number of output values output by the user individual thermal sensation decision tree model, and to statistically and classify the preset number of output values, and to take the thermal sensation state corresponding to the output value in the classification containing the most output values as the thermal sensation state of the target user. In this way, the accuracy of user individual thermal sensation recognition can be improved, and the model can also perform machine learning to further optimize, further improve the accuracy of the recognition result, and form a virtuous cycle.

[0106] In some embodiments, the controller 30 is further configured to: increase the indoor fan speed of the air conditioner 1 if the target user's perceived temperature is too cold after a preset number of consecutive tests when the air conditioner 1 is in heating mode; decrease the indoor fan speed of the air conditioner 1 if the target user's perceived temperature is too hot after a preset number of consecutive tests when the air conditioner 1 is in heating mode; decrease the indoor fan speed of the air conditioner 1 if the target user's perceived temperature is too cold after a preset number of consecutive tests when the air conditioner 1 is in cooling mode; and increase the indoor fan speed of the air conditioner 1 if the target user's perceived temperature is too hot after a preset number of consecutive tests when the air conditioner 1 is in cooling mode. For example, the controller 30 uses a user's individual temperature perception decision tree model to perform three independent temperature perception judgment values ​​(-1, 0, 1) respectively, and then performs statistical analysis. The temperature perception value with the most statistically significant values ​​is the final output value for temperature perception judgment.

[0107] For example, such as Figure 8 The diagram shows a flowchart of the overall operation logic of the comfort control of an air conditioner according to an embodiment of this disclosure. If the controller 30 outputs a "hot" (1) result based on the user's individual temperature and coldness perception decision tree model, the controller 30 sends a cooling signal, lowering the set temperature by 1°C. If the controller 30 outputs a "cold" (-1) result based on the user's individual temperature and coldness perception decision tree model, the controller 30 sends a heating signal, raising the set temperature by 1°C. If the controller 30 outputs a "neutral" (0) result based on the user's individual temperature and coldness perception decision tree model, the controller 30 maintains the existing setting. Each judgment cycle is based on the air conditioner feedback time. If the temperature and coldness perception prediction is "cold" (or "hot") for three consecutive cycles, it is considered that the user's individual temperature and coldness perception is strong, and the fan speed needs to be increased by one level; otherwise, the air conditioner fan speed remains unchanged.

[0108] In some embodiments, the second aspect of the present disclosure also proposes a control method of an air conditioner, which can be executed by a controller of the air conditioner, and the control method comprises: receiving a face temperature of a target user and an indoor environment temperature; inputting the face temperature and the indoor environment temperature into a user individual temperature-cold sensation decision tree model, wherein the user individual temperature-cold sensation decision tree model is configured with at least six layers of temperature decision condition sets, and the at least six layers of temperature decision condition sets constitute a plurality of temperature determination branches, wherein the first layer of temperature decision condition set comprises a decision condition based on one indoor environment temperature, the second layer of temperature decision condition set comprises a decision condition based on one face temperature and one indoor environment temperature, the third layer of temperature decision condition set comprises a decision condition based on one face temperature and three indoor environment temperatures, the fourth layer of temperature decision condition set comprises a decision condition based on five face temperatures and three indoor environment temperatures, the fifth layer of temperature decision condition set comprises a decision condition based on eight face temperatures and five indoor environment temperatures, and the sixth layer of temperature decision condition set comprises a decision condition based on nine face temperatures and eleven indoor environment temperatures; determining a temperature-cold sensation state of the target user according to an output value of the user individual temperature-cold sensation decision tree model; adjusting a current set target temperature according to the temperature-cold sensation state, and controlling the air conditioner to operate according to the adjusted target temperature.

[0109] Of course, in embodiments, the control method of the air conditioner of the present disclosure can also include other contents executed by the controller of the air conditioner, such as how to obtain the face temperature and how to identify the current temperature-cold sensation state of the user based on the user individual temperature-cold sensation decision tree model, which are not described herein again for brevity.

[0110] In summary, the present disclosure establishes a user individual temperature-cold sensation decision tree model based on artificial intelligence technology based on big data, self-learns the change rule of the temperature-cold sensation of the user, accurately identifies the individual thermal comfort demand of the user, performs personalized thermal comfort control, and meets the differentiated and personalized comfort control requirements of different individual users. At the same time, the present disclosure makes up for the deficiency of the PMV prediction comfort model based on the general population, which weakens the individual difference, so that the air conditioner 1 not only meets the comfort demand of the general population, but also can realize the personalized comfort demand of a single family user.

[0111] In the embodiments described above, for individual users, such as when there is only one user indoors, the user selects the individual comfort mode. Alternatively, if the air conditioner 1 detects that there is only one user indoors, it automatically activates the individual comfort mode. In this case, the air conditioner 1 can execute the individual comfort mode as described above to improve the individual user's comfort. However, when there are multiple people indoors, the air conditioner 1 will run a TMS (Therma and Humidity Management System) comfort mode based on a PMV predictive comfort model, which is suitable for the general population.

[0112] In some embodiments, when the air conditioner 1 is running automatically, it can activate the indoor user detection function to detect how many people are in the room. If there is only one person, it can automatically activate the individual user comfort mode, and if there are multiple people, it can run the TMS comfort mode.

[0113] For individual user comfort modes, such as Figure 9 As shown, when the air conditioner 1 is running, it activates the user's individual comfort mode, collects indoor temperature and humidity, and then the controller 30 calculates the target temperature or receives the target temperature set by the user. The controller 30 receives the target user's facial temperature and indoor ambient temperature and calls the user's individual temperature and coldness decision tree model. Then, it adjusts the target temperature according to the model output value, and then controls the air conditioner to run automatically based on the adjusted target temperature to meet the individual user's personalized comfort needs and improve user comfort.

[0114] The following section explains the TMS comfort mode based on the PMV predictive comfort model.

[0115] In some embodiments, the TMS comfort mode is an air conditioner cooling / heating comfort control method that effectively adjusts the comfort level of the air conditioner. It effectively solves the technical problem of how to control the air conditioner through temperature and humidity indicators. The entire comfortable cooling / heating stage is divided into three stages: initial comfort stage + stable comfort stage + healthy comfort stage. It not only effectively meets people's requirements for a perfect experience of cooling comfort, but also achieves a perfect combination of comfort and energy saving. In the healthy comfort stage, according to the thermal adaptability characteristics of the human body, the target set temperature is raised by 1℃, that is, Ts_saving = Ts_comfort + 1℃, which achieves the purpose of both comfort and energy saving.

[0116] In embodiments, the TMS comfort mode firstly relies on the temperature and humidity target value addressing. The temperature and humidity addressing rule is based on the predicted mean vote (PMV) value calculation. A "comfort temperature and humidity benchmark table (PMV value in ±0.5)" is generated by calculation as a benchmark table for the air conditioner comfort control. The air conditioner detects the outdoor environment temperature Tout, the indoor environment temperature Tin, and the indoor relative humidity Rh through sensors. According to the obtained outer ring Tout, the corresponding temperature zone is entered, combined with the human body clothing thermal resistance clo and the human body activity metabolic rate M to obtain different temperature compensation values Tcomp, and the specific operation mode (cooling / heating / air supply) of the air conditioner is judged. Then, according to the comfort temperature and humidity benchmark table, the obtained indoor relative humidity Rh is used as a pointer to address in the benchmark table to determine the target set temperature Ts_comfort in the stable comfort stage, and the air conditioner operates with Ts_comfort as the target set value.

[0117] In some embodiments, for the TMS comfort mode, the temperature and humidity addressing from the beginning always surrounds the PMV value six human body thermal sensation factors: environmental parameters (air temperature, air relative humidity, wind speed, and average radiation temperature) and human body parameters (human body activity intensity and clothing thermal resistance). The human body comfort control is the core, and the current industry practice mainly designs the comfort air conditioner through a single temperature index or uses a specified single temperature index + a specified single humidity index, which has obvious advantages.

[0118] The following Table 1 is the name and meaning of each symbol in the TMS comfort mode description.

[0119] Table 1

[0120]

[0121] In some embodiments, when the TMS comfort mode is running, the air conditioner detects the outer ring Tout, the inner ring Tin, and the indoor relative humidity Rh through the sensors configured by itself. According to the obtained Tout, the corresponding temperature zone is entered, and the next specific operation mode (cooling / heating / air supply) is judged. Every 2 hours, the new operation temperature zone is determined according to the outer ring temperature Tout. If it is still in the original operation temperature zone, the original mode and stage operation are continued; if it is in the new temperature zone, the original operation mode is interrupted, and the new specific sub-mode operation is entered in combination with the inner ring temperature Tin and the indoor relative humidity Rh in the new temperature zone. The indoor sensor fails or overflows, and the relative humidity Rh is defaulted to 65%.

[0122] In some embodiments, according to the comfort temperature and humidity benchmark table, the corresponding temperature zone is entered according to the obtained Tout, the mode to be entered is judged, including cooling, heating, air supply, etc., and then the rules in different modes are addressed, as follows.

[0123] Table 2 Comfort temperature and humidity reference table

[0124]

[0125] Table 3 Temperature compensation value table

[0126] Outdoor ambient temperature Tout (°C) Clothing thermal resistance clo Metabolic rate of the human body M Comfort temperature compensation value T 补( °C > 24 (fourth temperature zone) 0.5 1.2 0 > 18, < 24 (third temperature zone) 0.8 1.2 -2 > 13, < 18 (second temperature zone) 1.0 1.2 -3 < 13 (first temperature zone) 1.0 1.2 -3

[0127] In some embodiments, when the air conditioner is running in cooling mode, the addressing process is as shown in Fig. 2, as follows: Figure 10

[0128] According to the reference comfort table in Table 3. If Rh < 30% (lower limit of comfort humidity in the comfort table), the lowest temperature corresponding to Rh = 30% in the comfort table is taken as Ts 初 (Ts 初 = 24.5°C); if Rh > 65% (upper limit of comfort humidity in the comfort table), the lowest temperature corresponding to Rh = 65% in the comfort table is taken as Ts 初 (Ts 初 = 23.5°C); if 65% ≥ Rh ≥ 30% (upper and lower limits of comfort humidity in the comfort table), the lowest temperature corresponding to the closest humidity in the comfort table is taken as Ts 初 (for example, if Rh = 43%, the closest humidity in the comfort table is Rh = 45%, and the lowest temperature corresponding to Rh = 45% in the comfort table is taken as Ts 初 = 24°C). The average of the sum of the upper limit of comfort humidity (26.5°C) and the lower limit of comfort humidity (24°C) corresponding to Rh = 50% in the comfort table is taken as Ts 舒 , which is 25.25°C by default.

[0129] In some embodiments, when the air conditioner is running in heating mode, the addressing process is as shown in Fig. 3, as follows: Figure 11

[0130] According to the reference comfort table in Table 3. If Rh < 30% (lower limit of comfort humidity in the comfort table), the highest temperature corresponding to Rh = 30% in the comfort table is taken as Ts 初 (Ts 初 = 27°C); if Rh > 65% (upper limit of comfort humidity in the comfort table), the highest temperature corresponding to Rh = 65% in the comfort table is taken as Ts 初 (Ts 初 = 26°C); if 65% ≥ Rh ≥ 30% (upper and lower limits of comfort humidity in the comfort table), the lowest temperature corresponding to the closest humidity in the comfort table is taken as Ts 初 (for example, if Rh = 43%, the closest humidity in the comfort table is Rh = 45%, and the highest temperature corresponding to Rh = 45% in the comfort table is taken as Ts 初 ​​= 26.5°C). The average value (25.25°C) of the sum of the upper comfort humidity limit value (26.5°C) and the lower comfort humidity limit value (24°C) corresponding to Rh = 50% in the comfort table is taken as Ts_comfort, with the default being 25.5°C.

[0131] In some embodiments, when the air conditioner operates in the air supply mode, the air conditioner does not perform addressing.

[0132] The following takes the process of the air conditioner operating in the TMS comfort mode in the dehumidification and cooling modes as an example for illustration.

[0133] For example, as Figure 12 shown, Tout > 24°C.

[0134] ⑴. If Tin ≤ 28°C and Rh ≥ 65%, enter the dehumidification mode. Check Tables 2 and Table 3 to obtain Ts_ 初 、Ts_ 舒 、Ts_ 节 (where Ts_ 节 = Ts_ 舒 + 1°C) and the T compensation value, and enter the initial dehumidification comfort stage.

[0135] In the initial dehumidification comfort stage: Ts = Ts_ 初 + T 补 , the display screen of the air conditioner shows Ts_ 舒 + T compensation and the air conditioner displays an icon indicating the change in the TMS comfort mode operation stage). When E ≤ 0.5°C and it accumulates for 5 minutes or (Tin - (Ts_ 舒 + T 补 )) ≤ -0.5°C and it accumulates for 15 minutes, enter the stable dehumidification comfort stage / / (Tin - (Ts_ 舒 + T) 补 )) ≤ -0.5°C means that the set temperature of the initial comfort stage is not reached, but the set temperature of the stable comfort stage is reached.

[0136] Stable dehumidification comfort stage: Ts(१) = Ts_ 初 + T 补 + 0.5°C, increasing by 0.5°C every 5 minutes, that is, Ts(n + 1) = Ts(n) + 0.5°C until Ts(n + 1) = Ts_ 舒 y+ T 补 , n is a natural number ≥ 1. / / Use a recursive increasing function to prevent the compressor from stopping when the set temperature changes greatly during stage conversion. When E ≤ -0.5°C and it lasts for 30 minutes (starting from the time when Ts(n + 1) = Ts_comfort + T compensation), enter the healthy dehumidification comfort stage.

[0137] Healthy dehumidification comfort stage: Ts(१) = Ts_舒 +T 补 +0.5℃, every 5 min increment 0.5℃, that is, Ts(n+1)=Ts(n)+0.5℃, until Ts(n+1)=Ts_ 节 +T 补 , n is a natural number ≥1. / / Using recursive incremental function, to prevent the stage conversion, set temperature change amplitude caused by reaching the set temperature compressor shutdown phenomenon.

[0138] 2 If Tin≤28℃, and Rh<65%, into the supply air mode.

[0139] 6 If Tin>28℃, into the refrigeration mode. Look up table 2 and table 3, get Ts_ 初 , Ts_ 舒 , Ts_ 节 (Where Ts_ 节 =Ts_ 舒 +1℃) and T compensation value, into the refrigeration initial comfort stage.

[0140] Refrigeration initial comfort stage: Ts=Ts_ 初 +T 补 / / (Display screen Ts_ 初 +T 补 and TMS comfort mode running stage change icon), when E≤0.5℃ and cumulative 5 min or (Tin-(Ts_ 初 +T 补 ))≤-0.5℃ and cumulative 15 min, into the refrigeration stable comfort stage / / (Tin-(Ts_ 初 +T 补 ))≤-0.5℃ represents to reach the initial comfort stage set temperature, but reached the stable comfort stage set temperature.

[0141] Refrigeration stable comfort stage: Ts(1)=Ts_ 初 +T 补 +0.5℃, every 5 min increment 0.5℃, that is, Ts(n+1)=Ts(n)+0.5℃, until Ts(n+1)=Ts_ 舒 +T 补 , n is a natural number ≥1. / / Using recursive incremental function, to prevent the stage conversion, set temperature change amplitude caused by reaching the set temperature compressor shutdown phenomenon. When E≤-0.5℃ and continue 30 min (from Ts(n+1)=Ts_ 舒 +T 补 start timing), into the refrigeration health comfort stage.

[0142] Refrigeration health comfort stage: Ts(1)=Ts_ 舒 +T补 + 0.5℃, every 5 min increment 0.5℃, that is, Ts(n+1) = Ts(n) + 0.5℃, until Ts(n+1) = Ts 节 + T 补 , n is a natural number ≥ 1. / / Using a recursive incremental function, to prevent the stage conversion, set the temperature change amplitude caused by reaching the set temperature compressor shutdown phenomenon.

[0143] In some embodiments, the indoor fan running state, the compressor running state and frequency, the electric heating running state, the horizontal air deflector, the vertical air deflector, etc. in the initial comfort, stable comfort, health comfort stages of each mode are shown in Table 4.

[0144] Table 4 Air conditioner component operation control requirement table

[0145]

[0146] In some embodiments, according to the humidity control and humidity preservation theory (such as Table 5, Figure 13 ), an indoor fan comfort control method is proposed, which better controls and keeps the indoor environment relative humidity in the range of human comfortable humidity.

[0147] Table 5 4h absolute dehumidification amount and indoor unit speed relationship

[0148] Absolute dehumidification amount for 4h 700 rpm 870 rpm 1000 rpm 1250 rpm Indoor 27°C / 15.8°C (30% RH) 3.90 kg 3.24 kg 3.01 kg 2.94 kg Indoor 27°C / 19°C (47% RH) 3.68 kg 4.51 kg 4.79 kg 4.11 kg Indoor 27°C / 21.2°C (60% RH) 4.21 kg 5.45 kg 4.66 kg 4.70 kg

[0149] Based on the above humidity control and humidity preservation theory, an indoor fan comfort control method is proposed, which better controls and keeps the indoor environment relative humidity in the range of human comfortable humidity. Referring to Figure 14 The indoor fan comfort control method of the air conditioner when the air conditioner operating mode is a cooling mode is described.

[0150] Step S11, the air conditioner starts the TMS function. Step S12, the indoor environment temperature Tin, the outdoor environment temperature Tout, the indoor environment relative humidity Rh and the indoor instantaneous sampling relative humidity Rhi are obtained.

[0151] Step S13, according to the indoor environment temperature Tin, the outdoor environment temperature Tout and the indoor environment relative humidity Rh, the air conditioner enters the cooling or dehumidification mode.

[0152] Step S14, the air conditioner enters the cooling mode. Step S15, control the indoor fan speed.

[0153] Step S16, it is judged whether the set temperature difference E is greater than a first set temperature, for example, 2℃, if yes, step S17 is executed; if no, step S18 is executed.

[0154] Step S17, the indoor fan is controlled to operate at a first wind speed. Step S18, the indoor fan is controlled to operate at a second wind speed. Step S19, it is judged whether the set temperature difference E is less than or equal to the first set temperature, for example, 2℃, if yes, step S18 is executed; if no, step S17 is executed.

[0155] S20, it is judged whether the first temperature difference is greater than or equal to -2℃ and less than or equal to 2℃ within a preset time, if yes, step S21 is executed; if no, step S18 is executed.

[0156] Step S21, it is judged whether the second temperature difference is greater than or equal to -6 and less than 6, if yes, step S20 is executed; if no, step S22 is executed.

[0157] Step S22, it is judged whether the second temperature difference is greater than 6, if yes, step S23 is executed; if no, step S24 is executed.

[0158] Step S23, the indoor fan is controlled to operate at a third wind speed.

[0159] Step S24, it is judged whether the second temperature difference is less than -6, if yes, step S25 is executed; if no, step S21 is executed.

[0160] Step S25, the indoor fan is controlled to operate at a fourth wind speed.

[0161] Through the above steps S11-S25, the energy consumption of the air conditioner can be reduced while ensuring the use comfort of the user.

[0162] The TMS comfort mode based on the PMV model of the embodiment of the present disclosure is described above.

[0163] In summary, the air conditioner of the embodiments of the present disclosure can set a user individual comfort mode and a TMS comfort mode. Since the PMV model is an average thermal sensation prediction model based on the general population, the influence of individual differences is weakened. In order to meet the personalized and differentiated thermal comfort needs of household air conditioners, especially individual users in the family, an artificial intelligence technology based on big data is used to establish a user individual warm and cold sensation decision tree model, to self-learn the change rule of user warm and cold sensation, to accurately identify the individual thermal comfort needs of the user, to perform personalized thermal comfort control, and to meet the differentiated and personalized comfort control requirements of different user individuals. It also makes up for the deficiency of the PMV prediction comfort model based on the general population that weakens the individual differences, so that the air conditioner not only meets the comfort needs of the general population, but also can realize the personalized comfort needs of individual family users.

[0164] The user individual warm and cold sensation decision tree model of the embodiments of the present disclosure is based on a machine learning method, and its accuracy depends largely on the amount of data involved in the training. Therefore, in actual application, as the amount of data continues to increase, its accuracy will also improve. The warm and cold sensation prediction model based on skin temperature can achieve full automatic control without the need for personnel to adjust parameters in ideal conditions.

[0165] In addition, the terms used in the above technical description are used to provide a thorough understanding of the described embodiments. However, it is not necessary to be overly detailed in order to implement the described embodiments. Therefore, the above description of the embodiments is presented for explanation and description. The embodiments presented in the above description and the examples disclosed according to these embodiments are individually provided to add context and help understand the described embodiments. The above description is not used to be exhaustive or to limit the described embodiments to the exact form of the present disclosure. According to the above teachings, several modifications, selections and changes are feasible. In some cases, well-known processing steps are not described in detail to avoid unnecessarily affecting the described embodiments.

Claims

1. An air conditioner characterized by comprising: Comprising: a human body temperature detection device for detecting the face temperature of a target user; an indoor temperature detection device for detecting the indoor environment temperature; a controller connected with the human body temperature detection device and the indoor temperature detection device, the controller being configured to: input the face temperature and the indoor environment temperature into a user individual temperature and thermal sensation decision tree model, determine the thermal sensation state of the target user according to the output value of the user individual temperature and thermal sensation decision tree model, adjust the current set target temperature according to the thermal sensation state, and control the air conditioner to operate according to the adjusted target temperature, wherein the user individual temperature and thermal sensation decision tree model is configured with at least six layers of temperature decision condition sets, and the at least six layers of temperature decision condition sets constitute a plurality of temperature judgment branches, wherein the first layer of temperature decision condition set includes a decision condition based on one indoor environment temperature, the second layer of temperature decision condition set includes a decision condition based on one face temperature and one indoor environment temperature, the third layer of temperature decision condition set includes a decision condition based on one face temperature and three indoor environment temperatures, the fourth layer of temperature decision condition set includes a decision condition based on five face temperatures and three indoor environment temperatures, the fifth layer of temperature decision condition set includes a decision condition based on eight face temperatures and five indoor environment temperatures, and the sixth layer of temperature decision condition set includes a decision condition based on nine face temperatures and eleven indoor environment temperatures; wherein the controller is specifically configured to compare the face temperature and the indoor environment temperature with the plurality of temperature judgment branches constituted by the at least six layers of temperature decision condition sets in the user individual temperature and thermal sensation decision tree model to determine a target temperature judgment branch, obtain the output value of the user individual temperature and thermal sensation decision tree model corresponding to the target temperature judgment branch, and take the thermal sensation state corresponding to the output value as the thermal sensation state of the target user when determining the thermal sensation state of the target user; wherein the controller is configured to: determining whether the indoor environment temperature T 室内 ≤ T 室内设定1 ; If T 室内 ≤ T 室内设定1 , then further determine whether T 室内 ≤ T 室内设定2 , where T 室内设定2 < T 室内设定1 ; If T 室内 ≤ T 室内设定2 , then further determine whether T 室内 ≤ T 室内设定3 , wherein T 室内设定3 < T 室内设定2 ; If T 室内 ≤ T 室内设定3 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定4 , wherein T 室内设定4 < T 室内设定3 ; If T 室内 ≤ T 室内设定4 , then further determine whether T 室内 ≤ T 室内设定5 , wherein T 室内设定5 < T 室内设定4 ; If T 室内 ≤ T 室内设定5 , the target temperature determination branch is determined to be a first temperature determination branch, and the output value of the user individual temperature cold and warm feeling decision tree model corresponding to the first temperature determination branch is a cold bias output value. Therefore, the cold and warm feeling state of the target user is cold bias. If T 室内 ≤ T 室内设定5 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定1 ; If T 面部 ≤ T 面部设定1 , it is determined that the target temperature determination branch is a second temperature determination branch, and an output value corresponding to the second temperature determination branch of the user individual temperature thermal sensation decision tree model is a cold bias output value. Therefore, the thermal sensation state of the target user is cold bias. If T 面部 ≤ T 面部设定1 , it is determined that the target temperature determination branch is a third temperature determination branch, and an output value corresponding to the third temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

2. The air conditioner of claim 1, wherein the controller is configured to: If T 室内 ≤ T 室内设定4 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定2 ; If T 面部 ≤ T 面部设定2 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定3 , wherein T 面部设定3 <T 面部设定2 ; If T 面部 ≤ T 面部设定3 , it is determined that the target temperature determination branch is a fourth temperature determination branch, and an output value corresponding to the fourth temperature determination branch of the user individual temperature warm-cold sensation decision tree model is a cold bias output value. Therefore, the target user's warm-cold sensation state is cold bias. If T 面部 ≤ T 面部设定3 , it is determined that the target temperature determination branch is a fifth temperature determination branch, and an output value corresponding to the fifth temperature determination branch of the user individual temperature warm-cold sensation decision tree model is a cold bias output value. Therefore, the target user's warm-cold sensation state is cold bias.

3. The air conditioner of claim 2, wherein the controller is configured to: If T 面部 ≤ T 面部设定2 , then further determine whether T 室内 ≤ T 室内设定6 , wherein T 室内设定4 < T 室内设定6 ; If T 室内 ≤ T 室内设定6 , it is determined that the target temperature determination branch is a sixth temperature determination branch, and an output value corresponding to the sixth temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定6 , it is determined that the target temperature determination branch is a seventh temperature determination branch, and an output value corresponding to the seventh temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

4. The air conditioner of claim 1, wherein the controller is configured to: If T 室内 ≤ T 室内设定3 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定4 ; If T 面部 ≤ T 面部设定4 , it is determined that the target temperature determination branch is an eighth temperature determination branch, and an output value corresponding to the eighth temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral. If T 面部 ≤ T 面部设定4 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定7 , wherein T 室内设定3 < T 室内设定7 ; If T 室内 ≤ T 室内设定7 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定5 , wherein T 面部设定4 <T 面部设定5 ; If T 面部 ≤ T 面部设定5 , the target temperature determination branch is determined as a ninth temperature determination branch, and the output value of the user individual temperature hot-cold decision tree model corresponding to the ninth temperature determination branch is a cold bias output value. Therefore, the target user's hot-cold state is cold bias. If T 面部 ≤ T 面部设定5 , it is determined that the target temperature determination branch is a tenth temperature determination branch, and an output value corresponding to the tenth temperature determination branch of the user individual temperature warm-cold sensation decision tree model is a cold bias output value. Therefore, the target user's warm-cold sensation state is cold bias.

5. The air conditioner of claim 4, wherein the controller is configured to: If T 室内 ≤ T 室内设定7 , then further determine whether T 室内 ≤ T 室内设定8 , wherein T 室内设定7 < T 室内设定8 ; If T 室内 ≤ T 室内设定8 , the target temperature determination branch is determined as an eleventh temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the eleventh temperature determination branch is neutral, and the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定8 , it is determined that the target temperature determination branch is a twelfth temperature determination branch, and an output value corresponding to the twelfth temperature determination branch of the user individual temperature warm-cold sensation decision tree model is a cold bias output value, and the target user's warm-cold sensation state is cold bias.

6. The air conditioner of claim 1, wherein the controller is configured to: If T 室内 ≤ T 室内设定2 , then further determine whether the face temperature T 面部 ≤ T 面部设定6 ; If T 面部 ≤ T 面部设定6 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定9 , wherein T 室内设定2 < T 室内设定9 ; If T 室内 ≤ T 室内设定9 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定10 , wherein T 室内设定10 < T 室内设定9 ; If T 室内 ≤ T 室内设定10 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定11 , wherein T 室内设定11 < T 室内设定10 ; If T 室内 ≤ T 室内设定11 , it is determined that the target temperature determination branch is a thirteenth temperature determination branch, and an output value corresponding to the thirteenth temperature determination branch of the user individual temperature hot-cold decision tree model is a cold bias output value. Therefore, the target user has a cold bias hot-cold feeling state. If T 室内 ≤ T 室内设定11 , it is determined that the target temperature determination branch is a fourteenth temperature determination branch, and an output value corresponding to the fourteenth temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

7. The air conditioner of claim 6, wherein the controller is configured to: If T 室内 ≤ T 室内设定10 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定12 , wherein T 室内设定10 < T 室内设定12 ; If T 室内 ≤ T 室内设定12 , the target temperature determination branch is determined as a fifteenth temperature determination branch, and the output value of the user individual temperature cold and warm feeling decision tree model corresponding to the fifteenth temperature determination branch is a cold bias output value. Therefore, the cold and warm feeling state of the target user is cold bias. If T 室内 ≤ T 室内设定12 , it is determined that the target temperature determination branch is a sixteenth temperature determination branch, and an output value corresponding to the sixteenth temperature determination branch of the user individual temperature warm-cold sensation decision tree model is a cold bias output value. Therefore, the target user has a cold bias warm-cold sensation.

8. The air conditioner of claim 6, wherein the controller is configured to: If T 室内 ≤ T 室内设定9 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定13 , wherein T 室内设定9 < T 室内设定13 ; if T 室内 ≤ T 室内设定13 , then the target temperature determination branch is determined as a seventeenth temperature determination branch, and an output value of the user individual temperature thermal sensation decision tree model corresponding to the seventeenth temperature determination branch is neutral, and the target user's thermal sensation state is neutral. If T 室内 ≤ T 室内设定13 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定7 , wherein T 面部设定7 <T 面部设定6 ; If T 面部 ≤ T 面部设定7 , the target temperature determination branch is determined as an eighteenth temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the eighteenth temperature determination branch is a warm bias output value. Thus, the thermal sensation state of the target user is warm bias. if T 面部 ≤ T 面部设定7 , the target temperature determination branch is determined as the nineteenth temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the nineteenth temperature determination branch is obtained as a neutral output value. Thus, the thermal sensation state of the target user is neutral.

9. The air conditioner of claim 6, wherein the controller is configured to: if T 面部 ≤ T 面部设定6 , then further determine whether T 面部 ≤ T 面部设定8 , wherein T 面部设定6 < T 面部设定8 ; If T 面部 ≤ T 面部设定8 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定9 , wherein T 面部设定9 <T 面部设定8 ; If T 面部 ≤ T 面部设定9 , further determine whether the indoor environment temperature T 室内 ≤ T 室内设定14 , wherein T 室内设定2 < T 室内设定14 ; If T 室内 ≤ T 室内设定14 , the target temperature determination branch is determined as the twentieth temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the twentieth temperature determination branch is neutral, so the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定14 , it is determined that the target temperature determination branch is a twenty-first temperature determination branch, and an output value of the user individual temperature thermal sensation decision tree model corresponding to the twenty-first temperature determination branch is a neutral output value. Thus, the target user's thermal sensation state is neutral.

10. The air conditioner of claim 9, wherein the controller is configured to: if T 面部 ≤ T 面部设定9 , then further determine whether T 面部 ≤ T 面部设定10 , wherein T 面部设定9 < T 面部设定10 ; If T 面部 ≤ T 面部设定10 , it is determined that the target temperature determination branch is a twenty-second temperature determination branch, and an output value corresponding to the twenty-second temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral. if T 面部 ≤ T 面部设定10 , the target temperature determination branch is determined as a twenty-third temperature determination branch, and an output value corresponding to the twenty-third temperature determination branch of the user individual temperature thermal sensation decision tree model is obtained as a neutral output value. Thus, the thermal sensation state of the target user is neutral.

11. The air conditioner of claim 9, wherein the controller is configured to: if T 面部 ≤ T 面部设定8 , then further determine whether T 面部 ≤ T 面部设定11 , wherein T 面部设定8 < T 面部设定11 ; if T 面部 ≤ T 面部设定11 , then the target temperature determination branch is determined as a twenty-fourth temperature determination branch, and an output value of the user individual temperature thermal sensation decision tree model corresponding to the twenty-fourth temperature determination branch is a warm bias output value, and the target user's thermal sensation state is warm bias; If T 面部 ≤ T 面部设定11 , further determine whether the indoor environment temperature T 室内 ≤ T 室内设定15 , wherein T 室内设定2 < T 室内设定15 ; If T 室内 ≤ T 室内设定15 , the target temperature determination branch is determined as a twenty-fifth temperature determination branch, and the output value of the user individual temperature warm-cold sensation decision tree model corresponding to the twenty-fifth temperature determination branch is a cold bias output value. Thus, the target user's warm-cold sensation state is cold bias. If T 室内 ≤ T 室内设定15 , it is determined that the target temperature determination branch is a twenty-sixth temperature determination branch, and an output value of the user individual temperature thermal sensation decision tree model corresponding to the twenty-sixth temperature determination branch is a neutral output value.

12. The air conditioner of claim 1, wherein the controller is configured to: If T 室内 ≤ T 室内设定1 , then further determine whether the face temperature T 面部 ≤ T 面部设定12 ; If T 面部 ≤ T 面部设定12 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定16 , wherein T 室内设定1 < T 室内设定16 ; If T 室内 ≤ T 室内设定16 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定13 , wherein T 面部设定13 < T 面部设定12 ; If T 面部 ≤ T 面部设定13 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定14 , wherein T 面部设定14 < T 面部设定13 ; If T 面部 ≤ T 面部设定14 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定17 , wherein T 室内设定17 < T 室内设定16 ; If T 室内 ≤ T 室内设定17 , it is determined that the target temperature determination branch is the twenty-seventh temperature determination branch, and the output value corresponding to the twenty-seventh temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value, so the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定17 , it is determined that the target temperature determination branch is a twenty-eighth temperature determination branch, and an output value corresponding to the twenty-eighth temperature determination branch of the user individual temperature thermal sensation decision tree model is a heat bias output value, so the target user's thermal sensation state is heat bias.

13. The air conditioner of claim 12, wherein the controller is configured to: If T 面部 ≤ T 面部设定14 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定18 , wherein T 室内设定18 < T 室内设定16 ; If T 室内 ≤ T 室内设定18 , it is determined that the target temperature determination branch is the twenty-ninth temperature determination branch, an output value corresponding to the twenty-ninth temperature determination branch of the user individual temperature hot-cold sensation decision tree model is a heat bias output value, and the target user has a heat bias hot-cold sensation state. If T 室内 ≤ T 室内设定18 , it is determined that the target temperature determination branch is the thirtieth temperature determination branch, and the output value corresponding to the thirtieth temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

14. The air conditioner of claim 12, wherein the controller is configured to: if T 面部 ≤ T 面部设定13 , then further determine whether T 面部 ≤ T 面部设定15 , wherein T 面部设定13 < T 面部设定15 ; If T 面部 ≤ T 面部设定15 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定19 , wherein T 室内设定19 < T 室内设定16 ; If T 室内 ≤ T 室内设定19 , the target temperature determination branch is determined as a thirty-first temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the thirty-first temperature determination branch is a neutral output value. Thus, the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定19 , it is determined that the target temperature determination branch is a thirty-second temperature determination branch, and an output value corresponding to the thirty-second temperature determination branch of the user individual temperature thermal sensation decision tree model is a warm bias output value. Therefore, the target user's thermal sensation state is warm bias.

15. The air conditioner of claim 14, wherein the controller is configured to: If T 面部 ≤ T 面部设定15 , then further determine whether T 室内 ≤ T 室内设定20 , wherein T 室内设定20 < T 室内设定16 ; If T 室内 ≤ T 室内设定20 , it is determined that the target temperature determination branch is a thirty-third temperature determination branch, and an output value corresponding to the thirty-third temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定20 , it is determined that the target temperature determination branch is a thirty-fourth temperature determination branch, and an output value of the user individual temperature thermal sensation decision tree model corresponding to the thirty-fourth temperature determination branch is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

16. The air conditioner of claim 12, wherein the controller is configured to: If T 室内 ≤ T 室内设定16 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定16 , wherein T 面部设定16 < T 面部设定12 ; if T 面部 ≤ T 面部设定16 , the target temperature determination branch is determined as a thirty-fifth temperature determination branch, and an output value corresponding to the thirty-fifth temperature determination branch of the user individual temperature thermal sensation decision tree model is obtained as a neutral output value, and the thermal sensation state of the target user is neutral. If T 面部 ≤ T 面部设定16 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定17 , wherein T 面部设定17 < T 面部设定16 ; If T 面部 ≤ T 面部设定17 , it is determined that the target temperature determination branch is a thirty-sixth temperature determination branch, and an output value of the user individual temperature thermal sensation decision tree model corresponding to the thirty-sixth temperature determination branch is a neutral output value, so that the thermal sensation state of the target user is neutral. If T 面部 ≤ T 面部设定17 , then further determine whether T 室内 ≤ T 室内设定21 , wherein T 室内设定21 < T 室内设定16 ; If T 室内 ≤ T 室内设定21 , it is determined that the target temperature determination branch is a thirty-seventh temperature determination branch, and an output value corresponding to the thirty-seventh temperature determination branch of the user individual temperature thermal sensation decision tree model is a heat bias output value, and the target user's thermal sensation state is heat bias; If T 室内 ≤ T 室内设定21 , it is determined that the target temperature determination branch is a thirty-eighth temperature determination branch, and an output value corresponding to the thirty-eighth temperature determination branch of the user individual temperature thermal sensation decision tree model is a heat bias output value, so the target user's thermal sensation state is heat bias.

17. The air conditioner of claim 12, wherein the controller is configured to: If T 面部 ≤ T 面部设定12 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定22 , wherein T 室内设定1 < T 室内设定22 ; If T 室内 ≤ T 室内设定22 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定23 , wherein T 室内设定23 < T 室内设定22 ; if T 室内 ≤ T 室内设定23 , the target temperature determination branch is determined as the thirty-ninth temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the thirty-ninth temperature determination branch is obtained as a neutral output value, and the thermal sensation state of the target user is neutral. If T 室内 ≤ T 室内设定23 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定18 , wherein T 面部设定12 < T 面部设定18 ; If T 面部 ≤ T 面部设定18 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定19 , wherein T 面部设定19 < T 面部设定18 ; If T 面部 ≤ T 面部设定19 , the target temperature determination branch is determined as the fortieth temperature determination branch, and the output value of the user individual temperature thermal sensation decision tree model corresponding to the fortieth temperature determination branch is neutral, and the thermal sensation state of the target user is neutral. If T 面部 ≤ T 面部设定19 , it is determined that the target temperature determination branch is the forty-first temperature determination branch, and the output value corresponding to the forty-first temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

18. The air conditioner of claim 17, wherein the controller is configured to: If T 面部 ≤ T 面部设定18 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定20 , wherein T 面部设定20 < T 面部设定18 ; If T 面部 ≤ T 面部设定20 , it is determined that the target temperature determination branch is a forty-second temperature determination branch, and an output value corresponding to the forty-second temperature determination branch of the user individual temperature thermal sensation decision tree model is a warm bias output value, so the target user's thermal sensation state is warm bias; If T 面部 ≤ T 面部设定20 , it is determined that the target temperature determination branch is a forty-third temperature determination branch, and an output value corresponding to the forty-third temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

19. The air conditioner of claim 17, wherein the controller is configured to: If T 室内 ≤ T 室内设定22 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定21 , wherein T 面部设定12 < T 面部设定21 ; If T 面部 ≤ T 面部设定21 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定24 , wherein T 室内设定24 < T 室内设定22 ; If T 室内 ≤ T 室内设定24 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定22 , wherein T 面部设定22 < T 面部设定21 ; If T 面部 ≤ T 面部设定22 , it is determined that the target temperature determination branch is a forty-fourth temperature determination branch, and an output value corresponding to the forty-fourth temperature determination branch of the user individual temperature thermal sensation decision tree model is a heat bias output value, so that the thermal sensation state of the target user is heat bias; If T 面部 ≤ T 面部设定22 , it is determined that the target temperature determination branch is a forty-fifth temperature determination branch, and an output value corresponding to the forty-fifth temperature determination branch of the user individual temperature thermal sensation decision tree model is a heat bias output value, so the target user's thermal sensation state is heat bias.

20. The air conditioner of claim 19, wherein the controller is configured to: if T 室内 ≤ T 室内设定24 , then further determine whether T 面部 ≤ T 面部设定23 , wherein T 面部设定23 < T 面部设定21 ; If T 面部 ≤ T 面部设定23 , it is determined that the target temperature determination branch is a forty-sixth temperature determination branch, and an output value of the user individual temperature warm-cold sensation decision tree model corresponding to the forty-sixth temperature determination branch is a warm bias output value, and the target user's warm-cold sensation state is warm bias; If T 面部 ≤ T 面部设定23 , it is determined that the target temperature determination branch is the forty-seventh temperature determination branch, and the output value corresponding to the forty-seventh temperature determination branch of the user individual temperature thermal sensation decision tree model is a heat bias output value, so the thermal sensation state of the target user is heat bias.

21. The air conditioner of claim 17, wherein the controller is configured to: if T 面部 ≤ T 面部设定21 , then further determine whether T 面部 ≤ T 面部设定24 , wherein T 面部设定21 < T 面部设定24 ; If T 面部 ≤ T 面部设定24 , it is determined that the target temperature determination branch is the forty-eighth temperature determination branch, and the output value corresponding to the forty-eighth temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value, so the thermal sensation state of the target user is neutral. If T 面部 ≤ T 面部设定24 , it is determined that the target temperature determination branch is the forty-ninth temperature determination branch, and the output value corresponding to the forty-ninth temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value, so the thermal sensation state of the target user is neutral.

22. The air conditioner of any one of claims 1-21, wherein, the controller is configured to: the controller is configured to: the controller is configured to: the controller is configured to: the controller is further configured to: determine that the thermal sensation state of the target user is cold, and then increase the current set target temperature; determine that the thermal sensation state of the target user is neutral, and then maintain the current set target temperature; determining that the target user's thermal sensation state is warm, then lowering the current set target temperature.

23. The air conditioner of any one of claims 1-21, wherein, The controller is further configured to: determining that the target user's thermal sensation state is cold for a preset number of times in succession while the air conditioner is in the heating mode, then increasing the indoor air fan speed of the air conditioner; determining that the target user's thermal sensation state is warm for the preset number of times in succession while the air conditioner is in the heating mode, then lowering the indoor air fan speed of the air conditioner; determining that the target user's thermal sensation state is cold for the preset number of times in succession while the air conditioner is in the cooling mode, then lowering the indoor air fan speed of the air conditioner; determining that the target user's thermal sensation state is warm for the preset number of times in succession while the air conditioner is in the cooling mode, then increasing the indoor air fan speed of the air conditioner.

24. The air conditioner of claim 1, wherein The controller is further configured to: periodically inputting the face temperature and the indoor environment temperature into the user individual thermal sensation decision tree model to obtain a preset number of output values output by the user individual thermal sensation decision tree model, statistically and classifying the preset number of output values, and taking the thermal sensation state corresponding to the output values in the classification containing the most output values as the target user's thermal sensation state.

25. A control method for an air conditioner, characterized by, comprising: receiving a face temperature and an indoor environment temperature of a target user; inputting the face temperature and the indoor environment temperature into a user individual thermal sensation decision tree model, wherein the user individual thermal sensation decision tree model is configured with at least six layers of temperature decision condition sets, and the at least six layers of temperature decision condition sets constitute a plurality of temperature judgment branches, wherein the first layer of temperature decision condition set includes a decision condition based on one indoor environment temperature, the second layer of temperature decision condition set includes a decision condition based on one face temperature and one indoor environment temperature, the third layer of temperature decision condition set includes a decision condition based on one face temperature and three indoor environment temperatures, the fourth layer of temperature decision condition set includes a decision condition based on five face temperatures and three indoor environment temperatures, the fifth layer of temperature decision condition set includes a decision condition based on eight face temperatures and five indoor environment temperatures, and the sixth layer of temperature decision condition set includes a decision condition based on nine face temperatures and eleven indoor environment temperatures; determining the target user's thermal sensation state according to the output value of the user individual thermal sensation decision tree model; adjusting the current set target temperature according to the thermal sensation state, and controlling the air conditioner to operate according to the adjusted target temperature; wherein the determination of the target user's thermal sensation state includes comparing the face temperature and the indoor environment temperature with the plurality of temperature judgment branches constituted by the at least six layers of temperature decision condition sets in the user individual thermal sensation decision tree model to determine a target temperature judgment branch, obtaining an output value of the user individual thermal sensation decision tree model corresponding to the target temperature judgment branch, and taking the thermal sensation state corresponding to the output value as the target user's thermal sensation state; The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following steps: The method comprises the following determining whether the indoor environment temperature T 室内 ≤ T 室内设定1 ; If T 室内 ≤ T 室内设定1 , then it is further determined whether the indoor environment temperature T 室内 ≤ T 室内设定2 , wherein T 室内设定2 < T 室内设定1 ; If T 室内 ≤ T 室内设定2 , then further determine whether T 室内 ≤ T 室内设定3 , wherein T 室内设定3 < T 室内设定2 ; If T 室内 ≤T 室内设定3 , then further determine whether the indoor environment temperature T 室内 ≤T 室内设定4 , wherein T 室内设定4 < T 室内设定3 ; If T 室内 ≤ T 室内设定4 , then further determine whether the indoor environment temperature T 室内 ≤ T 室内设定5 , wherein T 室内设定5 < T 室内设定4 ; If T 室内 ≤ T 室内设定5 , the target temperature determination branch is determined to be a first temperature determination branch, and the output value of the user individual temperature cold and warm feeling decision tree model corresponding to the first temperature determination branch is a cold bias output value. Therefore, the cold and warm feeling state of the target user is cold bias. If T 室内 ≤ T 室内设定5 , then it is further determined whether the face temperature T 面部 ≤ T 面部设定1 ; If T 面部 ≤ T 面部设定1 , it is determined that the target temperature determination branch is a second temperature determination branch, and an output value corresponding to the second temperature determination branch of the user individual temperature cold and warm feeling decision tree model is a cold bias output value. Therefore, the target user's cold and warm feeling state is cold bias. If T 面部 ≤ T 面部设定1 , it is determined that the target temperature determination branch is a third temperature determination branch, and an output value corresponding to the third temperature determination branch of the user individual temperature thermal sensation decision tree model is a neutral output value. Therefore, the thermal sensation state of the target user is neutral.

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