Air conditioner and parameter control method of air conditioner

Abstract

The embodiment of the invention relates to an air conditioner, a parameter control method of the air conditioner and a controller of the air conditioner. The controller of the air conditioner is configured to obtain a first face area temperature corresponding to a target user and obtain a first indoor environment temperature; a temperature sensing result corresponding to the target user is determined through a temperature sensing recognition model according to the first face area temperature and the first indoor environment temperature; a first-layer decision condition of the temperature sensing recognition model is whether the cheek temperature is smaller than or equal to a first cheek temperature threshold value, and a second-layer decision condition of the temperature sensing recognition model comprises whether the cheek temperature is smaller than or equal to a second cheek temperature threshold value and whether the nose temperature is smaller than or equal to a first nose temperature threshold value; the second cheek temperature threshold value is smaller than the first cheek temperature threshold value; and according to the working mode of the air conditioner and the temperature sensing result of each user, target operation parameters of the air conditioner are determined. According to the air conditioner, the operation parameters of the air conditioner can be accurately and intelligently adjusted, and therefore the comfort requirement of a user is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an air conditioner and a parameter control method of the air conditioner. BACKGROUND

[0002] With the continuous improvement of people's living standards, the air conditioner has become one of the indispensable household appliances in modern life. The main function of the air conditioner is to adjust the indoor environment temperature to provide a comfortable indoor environment for users. At present, the parameter adjustment of the air conditioner is mainly realized by manually setting the temperature by the user or through the intelligent mode, and the intelligent degree of the air conditioner is low, which affects the user's use experience. SUMMARY

[0003] The embodiments of the present application disclose an air conditioner and a parameter control method of the air conditioner, which can accurately and intelligently adjust the operating parameters of the air conditioner, so as to meet the comfort requirements of users and improve the use experience of users.

[0004] The embodiments of the present application disclose an air conditioner, comprising:

[0005] A refrigerant circulation loop comprising a compressor, an outdoor heat exchanger and an indoor heat exchanger connected in sequence, the refrigerant circulation loop being configured to circulate refrigerant;

[0006] A temperature sensor configured to collect an indoor environment temperature corresponding to an indoor environment in which the air conditioner is located;

[0007] An infrared sensor configured to collect a face area temperature corresponding to at least one user in the indoor environment; the face area temperature comprises a cheek temperature and a nose temperature;

[0008] A controller configured to:

[0009] Obtain a first face area temperature corresponding to a target user collected by the infrared sensor, and obtain a first indoor environment temperature collected by the temperature sensor; the target user is any user in the indoor environment;

[0010] input the first facial region temperature and the first indoor environment temperature into a thermal sensation recognition model, determine the thermal sensation result corresponding to the target user according to the first facial region temperature and the first indoor environment temperature through the thermal sensation recognition model, a first layer decision condition of the thermal sensation recognition model is whether the cheek temperature is less than or equal to a first cheek temperature threshold, a second layer decision condition of the thermal sensation recognition model includes whether the cheek temperature is less than or equal to a second cheek temperature threshold and whether the nose temperature is less than or equal to a first nose temperature threshold, the second cheek temperature threshold is less than the first cheek temperature threshold, and the thermal sensation result includes a thermal sensation category, the thermal sensation category includes a first thermal sensation, a second thermal sensation or a third thermal sensation, the first thermal sensation indicates that the temperature sensation of the user is cold, the second thermal sensation indicates that the temperature sensation of the user is hot, and the third thermal sensation indicates that the temperature sensation of the user is neutral.

[0011] determine the target operation parameter corresponding to the air conditioner according to the working mode of the air conditioner and the thermal sensation result corresponding to the at least one user.

[0012] In the embodiments of the present application, the controller obtains the facial region temperature and the indoor environment temperature of the user, preliminarily judges through the first layer decision condition (whether the cheek temperature is less than or equal to the first cheek temperature threshold) of the thermal sensation recognition model, then combines the different facial region temperatures of the user, starts from the cheek temperature with the largest facial proportion, further adjusts the recognition result of the first layer by combining the further cheek temperature and the nose temperature, can more accurately quantify the thermal sensation of the individual user, forms a thermal sensation decision branch, so that the controller of the air conditioner can accurately identify and predict the thermal sensation result of each user in the indoor environment, and according to the accurate thermal sensation result corresponding to the at least one user, the controller adjusts the operation parameter of the air conditioner, so that the indoor environment temperature can more accurately meet the temperature demand of the at least one user in the indoor environment, so that the air conditioner can meet the comfort demand of the general population and also realize the individual comfort demand of each user.

[0013] As an optional implementation, the determination of the thermal sensation result corresponding to the target user through the thermal sensation recognition model according to the first facial region temperature and the first indoor environment temperature includes:

[0014] determining, through the thermal sensation recognition model, whether the first cheek temperature in the first facial region temperature is less than or equal to the first cheek temperature threshold;

[0015] if the first cheek temperature is less than or equal to the first cheek temperature threshold, determining, through the thermal sensation recognition model, whether the first cheek temperature is less than or equal to the second cheek temperature threshold;

[0016] In a case where the first cheek temperature is greater than the second cheek temperature threshold, the temperature sensing result corresponding to the target user is determined as the first temperature sensation or the third temperature sensation by the temperature sensing recognition model.

[0017] If the first cheek temperature is greater than the first cheek temperature threshold, it is determined by the temperature sensing recognition model whether a first nose temperature in the first face region temperature is less than or equal to the first nose temperature threshold.

[0018] In a case where the first nose temperature is greater than the first nose temperature threshold, the temperature sensing result corresponding to the target user is determined as the second temperature sensation or the third temperature sensation by the temperature sensing recognition model.

[0019] In the embodiments of the application, the first cheek temperature is determined by the temperature sensing recognition model. In a case where the first cheek temperature is between the first cheek temperature threshold and the second cheek temperature threshold, the temperature sensing result of the target user is determined as the cold-biased temperature sensation or the neutral temperature sensation. In a case where the first cheek temperature is greater than the first cheek temperature threshold and the first nose temperature is greater than the first nose temperature threshold, the temperature sensing result of the target user is determined as the hot-biased temperature sensation or the neutral temperature sensation. The temperature sensing recognition model generates a temperature sensing prediction branch for different face features of the target user, avoids the limitation of a single temperature threshold, and makes the temperature sensing result determined by the temperature sensing recognition model more suitable for the temperature demand of the target user, thereby improving the recognition accuracy of the temperature sensation of the target user.

[0020] As an optional implementation, the third layer decision condition of the temperature sensing recognition model includes whether the indoor environment temperature is less than or equal to a first environment temperature threshold, whether the nose temperature is less than or equal to a second nose temperature threshold, whether the indoor environment temperature is less than or equal to a second environment temperature threshold, and whether the indoor environment temperature is less than or equal to a third environment temperature threshold; the second nose temperature threshold is less than the first nose temperature threshold, the first environment temperature threshold is less than the third environment temperature threshold, and the second environment temperature threshold is less than the first environment temperature threshold.

[0021] In the case that the first nose temperature is less than or equal to the first nose temperature threshold value, the controller is further configured to: determine, by the thermal sensation recognition model, whether the first nose temperature is less than or equal to the second nose temperature threshold value; and in the case that the first nose temperature is less than or equal to the second nose temperature threshold value, determine, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the first thermal sensation or the third thermal sensation; and in the case that the first cheek temperature is greater than the second nose temperature threshold value, determine, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the second thermal sensation or the third thermal sensation.

[0022] In the embodiments of the present application, the third layer decision condition of the thermal sensation recognition model includes the judgment of the indoor environment temperature and the nose temperature, so that the thermal sensation recognition model can capture the differences between different regions of the face and the current indoor environment temperature and each temperature threshold, and further determine a more accurate thermal sensation result of the target user. Moreover, the thermal sensation result of the target user is determined through the further comparison between the first nose temperature and the second nose temperature threshold value.

[0023] As an optional implementation, the face region temperature includes a forehead temperature; and the fourth layer decision condition of the thermal sensation recognition model includes whether the nose temperature is less than or equal to a third nose temperature threshold value, whether the nose temperature is less than or equal to a fourth nose temperature threshold value, whether the forehead temperature is less than or equal to a first forehead temperature threshold value, whether the indoor environment temperature is less than or equal to a fourth environment temperature threshold value, whether the forehead temperature is less than or equal to a second forehead temperature threshold value, whether the cheek temperature is less than or equal to a third cheek temperature threshold value, and whether the forehead temperature is less than or equal to a third forehead temperature threshold value.

[0024] In the embodiments of the present application, the fourth layer decision condition of the thermal sensation recognition model includes the judgment of the nose temperature, the forehead temperature, the indoor environment temperature and the cheek temperature, so that the thermal sensation recognition model can capture the differences between different regions of the face and the current indoor environment temperature and each temperature threshold, and determine an accurate thermal sensation result of the target user through the cross judgment of each temperature data.

[0025] In the embodiments of the present application, the fourth layer decision condition of the thermal sensation recognition model includes the judgment of the nose temperature, the forehead temperature, the indoor environment temperature and the cheek temperature, so that the thermal sensation recognition model can capture the differences between different regions of the face and the current indoor environment temperature and each temperature threshold, and determine an accurate thermal sensation result of the target user through the cross judgment of each temperature data.

[0026] As an optional implementation, the facial region temperature includes an eye temperature; and the fifth layer decision condition of the thermosensitive recognition model includes:

[0027] whether the nose temperature is less than or equal to a fifth nose temperature threshold value;

[0028] whether the indoor environment temperature is less than or equal to a fifth environment temperature threshold value;

[0029] whether the eye temperature is less than or equal to a first eye temperature threshold value;

[0030] whether the nose temperature is less than or equal to a sixth nose temperature threshold value;

[0031] whether the indoor environment temperature is less than or equal to a sixth environment temperature threshold value;

[0032] whether the cheek temperature is less than or equal to a fourth cheek temperature threshold value;

[0033] whether the nose temperature is less than or equal to a seventh nose temperature threshold value;

[0034] whether the indoor environment temperature is less than or equal to a seventh environment temperature threshold value;

[0035] whether the eye temperature is less than or equal to a second eye temperature threshold value;

[0036] whether the indoor environment temperature is less than or equal to an eighth environment temperature threshold value;

[0037] wherein the fifth nose temperature threshold value is greater than the third nose temperature threshold value and less than the second nose temperature threshold value, the sixth nose temperature threshold value is greater than the fourth nose temperature threshold value and less than the third nose temperature threshold value, and the seventh nose temperature threshold value is greater than the second nose temperature threshold value and less than the first nose temperature threshold value; the fifth environment temperature threshold value is less than the sixth environment temperature threshold value and greater than the first environment temperature threshold value, the sixth environment temperature threshold value is less than the fourth environment temperature threshold value, the seventh environment temperature threshold value is greater than the third environment temperature threshold value, and the eighth environment temperature threshold value is greater than the seventh environment temperature threshold value; the first eye temperature threshold value is less than the second eye temperature threshold value; and the fourth cheek temperature threshold value is less than the third cheek temperature threshold value and greater than the second cheek temperature threshold value.

[0038] In the embodiments of the present application, the fifth layer decision condition of the thermosensitive recognition model includes the judgment of the indoor environment temperature, the eye temperature, the cheek temperature and the nose temperature. From the senses of the indoor environment and the user's face, the thermosensitive recognition model can recognize different situations from multiple dimensions and accurately obtain the thermosensitive result of the target user in each situation through layer-by-layer decision judgment.

[0039] As an optional implementation, after the first cheek temperature is judged to be less than or equal to the second cheek temperature threshold value by the temperature-sensation recognition model, the controller is further configured to:

[0040] If the first cheek temperature is less than or equal to the second cheek temperature threshold value, it is judged by the temperature-sensation recognition model whether the first indoor environment temperature is less than or equal to the first environment temperature threshold value;

[0041] If the first indoor environment temperature is greater than the first environment temperature threshold value, it is judged by the temperature-sensation recognition model whether the first nose temperature is less than or equal to the fourth nose temperature threshold value;

[0042] In the case that the first nose temperature is less than or equal to the fourth nose temperature threshold value, it is determined by the temperature-sensation recognition model that the temperature-sensation result corresponding to the target user is the third temperature-sensation;

[0043] If the first nose temperature is greater than the fourth nose temperature threshold value, it is judged by the temperature-sensation recognition model whether the first indoor environment temperature is less than or equal to the fifth environment temperature threshold value;

[0044] In the case that the first indoor environment temperature is less than or equal to the fifth environment temperature threshold value, it is determined by the temperature-sensation recognition model that the temperature-sensation result corresponding to the target user is the first temperature-sensation;

[0045] In the case that the first indoor environment temperature is greater than the fifth environment temperature threshold value, it is determined by the temperature-sensation recognition model that the temperature-sensation result corresponding to the target user is the second temperature-sensation.

[0046] In the embodiments of the application, the controller judges layer by layer through the first layer decision condition to the fifth layer decision condition of the temperature-sensation recognition model, and in the case that the first cheek temperature is less than the second cheek temperature threshold value, the first indoor environment temperature is between the first environment temperature threshold value and the fifth environment temperature threshold value, and the first nose temperature is greater than the fourth nose temperature threshold value, it is determined that the temperature-sensation result of the target user is the hot temperature-sensation, thereby improving the recognition accuracy of the temperature-sensation of the user.

[0047] As an optional implementation, in the case that the first nose temperature is less than or equal to the second nose temperature threshold value, the temperature-sensation result corresponding to the target user is determined by the temperature-sensation recognition model to be the first temperature-sensation or the third temperature-sensation, which comprises:

[0048] If the first nose temperature is less than or equal to the second nose temperature threshold value, it is judged by the temperature-sensation recognition model whether the first indoor environment temperature is less than or equal to the fourth environment temperature threshold value;

[0049] determining that the target user corresponds to the third thermal sensation if the first indoor environment temperature is greater than the fourth environment temperature threshold;

[0050] if the first indoor environment temperature is less than or equal to the fourth environment temperature threshold, determining whether the first indoor environment temperature is less than or equal to the sixth environment temperature threshold through the thermal sensation recognition model;

[0051] determining that the target user corresponds to the third thermal sensation if the first indoor environment temperature is less than or equal to the sixth environment temperature threshold;

[0052] determining that the target user corresponds to the first thermal sensation if the first indoor environment temperature is greater than the sixth environment temperature threshold.

[0053] In the embodiments of the application, the air conditioner determines the thermal sensation result of the target user through the first to fifth decision conditions of the thermal sensation recognition model, and through specific decision branches, the accurate thermal sensation result of the target user can be obtained.

[0054] As an optional implementation, the thermal sensation recognition model includes five decision conditions, and there are 25 decision branches in total; each leaf node corresponding to the decision branch is a thermal sensation result.

[0055] As an optional implementation, the obtaining of the first facial region temperature corresponding to the target user collected by the infrared sensor and the obtaining of the first indoor environment temperature collected by the temperature sensor include:

[0056] obtaining the first facial region temperature corresponding to the target user collected by the infrared sensor in a current detection period, and obtaining the first indoor environment temperature collected by the temperature sensor in the current detection period;

[0057] The inputting of the first facial region temperature and the first indoor environment temperature into the thermal sensation recognition model, and the determining of the thermal sensation result corresponding to the target user by the thermal sensation recognition model according to the first facial region temperature and the first indoor environment temperature, include:

[0058] The inputting of the first facial region temperature and the first indoor environment temperature into the thermal sensation recognition model, and the determining of the thermal sensation result corresponding to the target user by the thermal sensation recognition model according to the first facial region temperature and the first indoor environment temperature, include:

[0059] determining the thermal sensation result corresponding to the target user according to the first thermal sensation results corresponding to the target user and at least two detection periods respectively.

[0060] In the embodiment of the application, the air conditioner can reduce random errors of single temperature acquisition and accidental results of single temperature sensing recognition model by obtaining first temperature sensing results of the target user in multiple detection periods and fusing the first temperature sensing results of the multiple detection periods, so as to ensure the accuracy and stability of the final temperature sensing result corresponding to the target user.

[0061] The embodiment of the application discloses a parameter control method of an air conditioner, comprising:

[0062] obtaining a first facial region temperature of a target user collected by an infrared sensor and a first indoor environment temperature collected by a temperature sensor; the target user is any user in an indoor environment where the air conditioner is located;

[0063] inputting the first facial region temperature and the first indoor environment temperature into a temperature sensing recognition model, determining a temperature sensing result corresponding to the target user according to the first facial region temperature and the first indoor environment temperature by the temperature sensing recognition model; a first layer decision condition of the temperature sensing recognition model is whether the cheek temperature is less than or equal to a first cheek temperature threshold value, a second layer decision condition of the temperature sensing recognition model includes whether the cheek temperature is less than or equal to a second cheek temperature threshold value and whether the nose temperature is less than or equal to a first nose temperature threshold value, and the second cheek temperature threshold value is less than the first cheek temperature threshold value; the temperature sensing result includes a temperature sensing category, the temperature sensing category includes a first temperature sensing, a second temperature sensing or a third temperature sensing, the first temperature sensing indicates that the temperature feeling of the user is cold, the second temperature sensing indicates that the temperature feeling of the user is hot, and the third temperature sensing indicates that the temperature feeling of the user is neutral;

[0064] determining a target operating parameter of the air conditioner according to the operating mode of the air conditioner and the temperature sensing result corresponding to at least one user in the indoor environment.

[0065] In the embodiment of the application, the air conditioner obtains the facial region temperature of the user and the indoor environment temperature, preliminarily judges by the first layer decision condition (whether the cheek temperature is less than or equal to the first cheek temperature threshold value) of the temperature sensing recognition model, then combines the different facial region temperatures of the user, starts from the cheek temperature with the largest facial proportion, and further adjusts the recognition result of the first layer by combining the further cheek temperature and the nose temperature, so as to more accurately quantify the temperature feeling of the individual user, form a temperature sensing decision branch, and enable the controller of the air conditioner to accurately identify and predict the temperature sensing result of each user in the indoor environment; and the controller adjusts the operating parameter of the air conditioner according to the accurate temperature sensing result corresponding to at least one user, so that the indoor environment temperature can more accurately meet the temperature demand of at least one user in the indoor environment, so that the air conditioner can meet the comfort demand of the general population and also realize the individual comfort demand of each user. BRIEF DESCRIPTION OF DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

[0067] Figure 1 An application scenario diagram of an air conditioner in an embodiment;

[0068] Figure 2 A control flow diagram of an air conditioner in an embodiment;

[0069] Figure 3 A control logic diagram of a controller in an embodiment;

[0070] Figure 4 A schematic diagram of an addressing process of a controller in a cooling mode in an embodiment;

[0071] Figure 5 A schematic diagram of an addressing process of a controller in a heating mode in an embodiment;

[0072] Figure 6 A structural block diagram of an air conditioner in an embodiment;

[0073] Figure 7 A schematic diagram of a humidity change curve in an embodiment;

[0074] Figure 8 A control flow diagram of an indoor fan when a controller is in a cooling mode in an embodiment;

[0075] Figure 9 A control flow diagram of a controller in an embodiment;

[0076] Figure 10 A control flow diagram of a controller in another embodiment;

[0077] Figure 11A A schematic diagram of a partial decision branch of a temperature sensing recognition model in an embodiment;

[0078] Figure 11B A schematic diagram of a partial decision branch of a temperature sensing recognition model in an embodiment;

[0079] Figure 11C A schematic diagram of a partial decision branch of a temperature sensing recognition model in an embodiment;

[0080] Figure 12 A control flow diagram of a controller in an embodiment;

[0081] Figure 13 Control flow chart of the controller in another embodiment;

[0082] Figure 14 Division diagram of the air supply range covered by the air supply assembly in an embodiment;

[0083] Figure 15 Control flow chart of the controller in an embodiment;

[0084] Figure 16 Flow chart of the parameter control method of the air conditioner in an embodiment;

[0085] Figure 17 Flow chart of the parameter control method of the air conditioner in another embodiment;

[0086] Figure 18 Block diagram of the parameter control device of the air conditioner in an embodiment. DETAILED DESCRIPTION

[0087] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0088] It should be noted that the terms “include” and “have” and any variations thereof in the embodiments of the present application and the drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally further include steps or units not listed or can optionally further include other steps or units inherent to the process, method, product or device.

[0089] It can be understood that the terms “first”, “second” and the like used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, the first temperature sensor can be referred to as the second temperature sensor, and similarly, the second temperature sensor can be referred to as the first temperature sensor. The first temperature sensor and the second temperature sensor are two different temperature sensor categories.

[0090] Figure 1 Application scenario diagram of the air conditioner in an embodiment. As shown in Figure 1As shown, the air conditioner 100 can be applied in an indoor environment 110, and by adjusting the operating parameters of the air conditioner 100, the environmental temperature in the indoor environment 110 is controlled to provide a suitable temperature for at least one user 120 in the indoor environment 110.

[0091] Optionally, the air conditioner 100 can include, but is not limited to, a floor standing air conditioner, a central air conditioner, a wall-mounted air conditioner, an embedded fan coil, a top-mounted air conditioner for a high-speed rail car, etc.

[0092] The indoor environment 110 refers to a closed or semi-closed space provided with an air conditioner. The indoor environment 110 can include, but is not limited to, an office scenario, a library scenario, a high-speed rail car scenario, a hospital room scenario, a school classroom scenario, etc.

[0093] Optionally, the distribution position of the air conditioner 100 in the indoor environment 110 can be set at the center of the indoor environment 110 (as shown in Figure 1 Optionally, the distribution position of the air conditioner 100 in the indoor environment 110 can be set at the center of the indoor environment 110 (as shown in

[0094] It should be noted that the number of users 120 in the indoor environment 110 is not limited herein, and can be, for example, five users 120 as shown in Figure 1 Optionally, the distribution position of the air conditioner 100 in the indoor environment 110 can be set at the center of the indoor environment 110 (as shown in

[0095] In the prior art, an air conditioner is usually designed to control comfort by using a specified single temperature index and a specified single humidity index. However, the adjustment of the air conditioner according to a single temperature index and a single humidity index does not fully consider various factors affecting human thermal sensation, such as air temperature, air relative humidity, wind speed, mean radiant temperature, human activity intensity, clothing thermal resistance, human metabolic rate, etc., and therefore, the single temperature and single humidity index adjustment cannot meet the needs of users.

[0096] Furthermore, air conditioners typically use the overall indoor environment as a control unit, failing to meet the differentiated needs of individuals. However, due to differences in physical condition, activity intensity, clothing, and other factors, each user's temperature needs also vary. For example, in an office setting, some employees may prefer a lower indoor temperature due to their faster metabolism, while others may prefer a higher indoor temperature due to their weaker constitutions. This makes it difficult for air conditioners to accommodate the personalized needs of different users. Consequently, air conditioners can mitigate individual differences in indoor environments, failing to ensure comfort for all users simultaneously. Furthermore, they have certain limitations in identifying and regulating individual thermal comfort.

[0097] The embodiments of the present application disclose an air conditioner and a parameter control method for the air conditioner, which can accurately and intelligently adjust the operating parameters of the air conditioner to meet the user's comfort requirements and improve the user's usage experience.

[0098] In this application, the comfort mode of the air conditioner operation can be divided into two stages (initial comfort stage and stable comfort stage); in the initial comfort stage, the PMV (Predicted Mean Vote) model is used as the core for global rapid temperature adjustment. In the cooling mode, PMV is selected as -0.5, and in the heating mode, it is selected as +0.5. The air conditioner determines the basic set temperature according to the PMV comfort range and initial humidity, and determines the compensation value according to the outdoor ambient temperature, clothing thermal resistance and metabolic rate. Finally, the initial set temperature is generated, and the operating parameters of the air conditioner are controlled so that the indoor environment temperature quickly reaches the boundary value close to the target comfort range; after entering the stable comfort stage, PMV is selected according to the [-0.5, 0.5] range, and the temperature sensation of each user in the indoor environment is introduced. The position of the air guide plate and the set temperature are adjusted to achieve precise control of personalized comfort.

[0099] like Figure 2 As shown, the overall control of the air conditioner operation is as follows: when the air conditioner is running, it enters the comfort stage and activates the functions of various sensors. The air conditioner controller collects the indoor ambient temperature through the temperature sensor and the indoor ambient humidity through the humidity sensor, and then the controller calculates the target temperature or receives the target temperature set by the user. (In the stable comfort stage, the controller will also determine the temperature perception of the target user based on the temperature perception recognition model according to the facial area temperature of the target user and the indoor ambient temperature, and then adjust to obtain the target temperature). Based on the target temperature, the controller controls the air conditioner to operate automatically according to the target operating parameters, so that the indoor ambient temperature can meet the personalized comfort needs of each user and improve user comfort.

[0100] The following is an introduction to the meanings of some terms and symbols involved in this application, as shown in Table 1:

[0101] Table 1

[0102]

[0103] The following is an explanation of the initial comfort stage based on the PMV model.

[0104] In the embodiments of the present application, the air conditioner relies on the temperature and humidity addressing rule to address and determine the target temperature of the initial comfort stage; the temperature and humidity addressing rule is calculated based on the human thermal sensation index PMV to predict the average thermal sensation index value, and a "comfort temperature and humidity reference table (PMV value in ±0.5)" is generated through experimental calculation as a reference table for the comfort control of the air conditioner (as shown in Table 2).

[0105] Table 2 Comfort temperature and humidity reference table

[0106]

[0107] Specifically, the air conditioner detects the outdoor environment temperature Tout, the indoor environment temperature Tin, and the indoor relative humidity Rh through a temperature sensor. According to the temperature zone corresponding to the obtained outdoor environment temperature Tout, different temperature compensation values T_comp are obtained in combination with the clothing thermal resistance clo of the human body and the metabolic rate M of the human body, and the specific working mode (cooling / heating / ventilation) of the air conditioner is determined. Then, according to the comfort temperature and humidity reference table, the indoor relative humidity Rh obtained is used as a pointer to address in the reference table to determine the target set temperature Ts_com of the subsequent stable comfort stage, so that the air conditioner runs with Ts_com as the target set value.

[0108] In some embodiments, for the initial comfort stage, the temperature and humidity addressing from the beginning always addresses around the PMV value six human thermal sensation factors: environmental parameters (air temperature, air relative humidity, wind speed, average radiation temperature) and human parameters (human metabolic rate, clothing thermal resistance), with human comfort control as the core.

[0109] In some embodiments, the outdoor ring environment temperature Tout is re-determined every 2h, and a new temperature zone is determined. If it is still in the original operating temperature zone, the original mode and stage operation is continued; if it is in the new temperature zone, the original working mode is interrupted, and a new working mode is entered in combination with the indoor ring temperature Tin and the indoor relative humidity Rh of the new temperature zone. If the indoor sensor fails or overflows, and there is no humidity sensor, Rh is defaulted to 65%.

[0110] Specifically, as Figure 3As shown in the table 1, the air conditioner acquires the outdoor environment temperature Tout, determines the temperature zone to which the Tout belongs, and determines the first temperature zone in the case of Tout≤13℃, the second temperature zone in the case of 13℃

[0111] Table 3: Corresponding relationship of clothing thermal resistance, human metabolic rate and temperature compensation value

[0112] Tout (°C) clo M Tsupp (°C) > 24 (4th zone) 0.5 1.2 0 > 18, < 24 (3rd zone) 0.8 1.2 -2 > 13, < 18 (2nd zone) 1.0 1.2 -3 < 13 (lst zone) 1.0 1.2 -3

[0113] In some embodiments, the controller of the air conditioner can address according to the working mode of the air conditioner to determine the target set temperature Ts_initial of the initial comfort stage and the target set temperature Ts_comfort of the stable comfort stage.

[0114] Specifically, taking the refrigeration mode as an example, as shown in the table 1, if Rh Figure 4

[0115] Specifically, taking the heating mode as an example, as shown in the table 1, if Rh Figure 5 ​As shown in the table, if Rh < 30% (the lower limit of the comfort table's comfortable humidity), the maximum temperature corresponding to Rh 30% in the comfort table is Ts_initial (Ts_initial = 27°C). If Rh > 65% (the upper limit of the comfort table's comfortable humidity), the maximum temperature corresponding to Rh 65% in the comfort table is Ts_initial (Ts_initial = 26°C). If 65% ≥ Rh ≥ 30% (the upper and lower limits of the comfort table's comfortable humidity), the minimum temperature corresponding to the closest humidity in the comfort table is Ts_initial (e.g., if Rh = 43%, and the closest humidity in the comfort table is Rh 45%, then the maximum temperature corresponding to Rh 45% is Ts_initial = 26.5°C). The average of the upper and lower limits of the comfortable humidity (26.5°C) and (24°C) corresponding to Rh 50% in the comfort table is Ts_comfort, with a default value of 25.5°C.

[0116] Specifically, in the air supply mode of the air conditioner, the addressing operation is not performed.

[0117] Figure 6 FIG. 1 is a structural block diagram of an air conditioner in one embodiment. Figure 6 As shown, the air conditioner 100 includes a refrigerant circulation circuit 610 , a temperature sensor 620 , an infrared sensor 630 and a controller 640 .

[0118] The refrigerant circulation circuit 610 is configured to circulate the refrigerant to achieve the cooling or heating function of the air conditioner 100 .

[0119] Optional, such as Figure 6 As shown, the refrigerant circulation circuit 610 includes a compressor 611, an outdoor heat exchanger 612 and an indoor heat exchanger 613 connected in sequence.

[0120] The outdoor heat exchanger 612 is used to exchange heat with the outdoor air; the compressor 611 is used to compress the refrigerant in a low-pressure state into a high-pressure state, and drive the refrigerant to circulate in the refrigerant circulation loop 610; the electronic expansion valve 113 is used to adjust the flow of the refrigerant in the refrigerant circulation loop 610; the indoor heat exchanger 613 is used to exchange heat with the indoor air.

[0121] Specifically, when the outdoor heat exchanger 612 of the air conditioner 100 cools the indoor environment 110, it functions as a condenser, releasing heat; the indoor heat exchanger 613 functions as an evaporator, absorbing heat. The refrigerant is compressed by the compressor 611, becoming a high-temperature, high-pressure gas. It then flows into the outdoor heat exchanger 612, releasing heat and condensing into a liquid (or gas, or a gas-liquid mixture). It then flows into the indoor heat exchanger 613, absorbing heat and evaporating into a gas. Finally, it flows back into the compressor 611, completing the refrigerant circulation loop 610 and cooling the indoor environment.

[0122] Specifically, when the outdoor heat exchanger 612 of the air conditioner 100 performs heating on the indoor environment 110, the outdoor heat exchanger 612 works as an evaporator to absorb heat; the indoor heat exchanger 613 works as a condenser to release heat. The refrigerant is compressed by the compressor 611 into a high-temperature and high-pressure gas; flows into the indoor heat exchanger 612 to release heat and condenses into a liquid (or gas, or gas-liquid mixture); then flows into the outdoor heat exchanger 612 to absorb heat and evaporates into a gas; finally, flows into the compressor 611 to complete a complete refrigerant circulation loop 610, thereby realizing heating on the indoor environment.

[0123] The temperature dynamic sensor 620 is configured to collect the indoor environment temperature corresponding to the indoor environment 110 of the air conditioner 100.

[0124] Optionally, the temperature dynamic sensor 620 can adopt a temperature sensor with high precision, fast response and long-term stability, such as a thermistor type or a thermocouple type, which can accurately measure the temperature value of the indoor environment 110.

[0125] The indoor environment temperature can reflect the actual temperature condition of the indoor environment 110 after the air conditioner 100 runs for a period of time, that is, the temperature condition that the user 120 in the indoor environment 110 can feel, which directly affects the user's experience.

[0126] Optionally, the temperature dynamic sensor 620 can be configured to collect the indoor environment temperature corresponding to the indoor environment 110 according to a preset temperature detection period. For example, the temperature dynamic sensor 620 can collect the temperature of the indoor environment 110 once every minute, every few minutes or longer. By periodically collecting the indoor environment temperature, continuous change data of the indoor environment temperature can be obtained, thereby avoiding the contingency of temperature abnormalities.

[0127] Optionally, the preset temperature detection period can be a fixed value, or can be determined according to the outdoor environment temperature and / or the indoor environment temperature.

[0128] The infrared sensor 630 is configured to collect the face region temperature corresponding to at least one user in the indoor environment.

[0129] Optionally, the infrared sensor 630 can adopt an infrared thermal imaging camera, a thermocouple sensor array, a single-point thermocouple sensor, etc.

[0130] For example, the infrared thermal imaging camera captures the face infrared radiation through a microbolometer or a QWIP (Quantum Well Infrared Photodetector), generates an infrared thermal imaging frame (the resolution is usually 80x60-640x512 pixels), and thus obtains the face region temperature corresponding to the user.

[0131] Optionally, the facial region temperature includes a cheek temperature, a nose temperature, a forehead temperature, and an eye temperature.

[0132] For example, the air conditioner can identify the human head profile from the complex background based on the improved target detection algorithm (input is an infrared thermal imaging frame, a stereo YOLOv7-tiny model), filter through a temperature threshold (for example, 28-37°C) and screen through an area threshold (for example, >200 pixels), and mark as a candidate region; adopt a PnP (Perspective-n-Point) algorithm, combine with the infrared camera calibration parameters (for example, focal length fx / fy, principal point cx / cy, distortion coefficients k1-k3, etc.), map the two-dimensional thermal imaging coordinates to a predefined 3D face model (which can include 68 key points), generate a virtual face grid with temperature attributes; then perform Gaussian weighted average (the weight is inversely proportional to the Euclidean distance from the vertex to the center of the region) on the vertex temperature in the grid belonging to the cheek (for example, key points 17-22), the nose (for example, key points 27-36), the forehead (for example, key points 1-16), and the eye (for example, key points 37-48), and calculate the quantitative temperature values of the cheek temperature, the nose temperature, the forehead temperature, and the eye temperature.

[0133] In some embodiments, the air conditioner 100 can further include a humidity sensor configured to collect the relative humidity in the indoor environment.

[0134] In some embodiments, the air conditioner 100 further includes an outdoor fan and an indoor fan. The outdoor fan drives the outdoor air to flow through the surface of the outdoor heat exchanger 612 by rotating, exchanges heat with the outdoor heat exchanger 612 to achieve the exchange of heat on the outdoor side; the indoor fan drives the indoor air to flow through the surface of the indoor heat exchanger 613 by rotating, exchanges heat with the indoor heat exchanger 613, thereby adjusting the temperature and humidity of the indoor air to provide a comfortable indoor environment 110 for the user 120.

[0135] Specifically, the outdoor fan and the indoor fan each include a guide vane and an air valve. The guide vane is used to guide the flow direction of the air. When the outdoor fan and the indoor fan are running, the guide vane can adjust the angle according to the actual demand, guide the air flow driven by the outdoor fan and the indoor fan to a specific direction, and ensure that the air can flow evenly and efficiently through the surface of the heat exchanger. The air valve is used to control the flow of the air. When the air conditioner 100 needs to increase the heat exchange amount, the opening of the air valve is increased to allow more air to pass through the heat exchanger, thereby enhancing the heat exchange effect; on the contrary, when the load of the air conditioner 100 is reduced or in a specific operating mode, the opening of the air valve is reduced to reduce the air flow and reduce energy consumption.

[0136] In some embodiments, the air conditioner can adjust the temperature and humidity of the indoor environment by controlling the opening of the air deflector and the air valve.

[0137] Specifically, the controller can control the indoor fan according to the humidity control and humidity preservation theory (as shown in Table 4, Figure 7 , that is, as the humidity of the indoor environment increases, the peak of the dehumidification amount of the air conditioner has a tendency to move to the high-speed side of the indoor unit, the critical point of the dry and wet working conditions is different at different air speeds, the higher the inlet relative humidity is, the larger the air speed is, and the lower the inlet relative humidity is, the smaller the air speed is. The relative humidity of the indoor environment can be controlled and maintained within the range of human comfortable humidity.

[0138] Table 4 Absolute dehumidification amount and indoor unit speed relationship in 4 hours

[0139] Absolute moisture removal over 4 hours 700 rpm 870 rpm 1000 rpm 1250 rpm Room 27°C / 15.8°C (30% RH) 3.90 kg 3.24 kg 3.01 kg 2.94 kg Room 27°C / 19°C (47% RH) 3.68 kg 4.51 kg 4.79 kg 4.11 kg Room 27°C / 21.2°C (60% RH) 4.21 kg 5.45 kg 4.66 kg 4.70 kg

[0140] In some embodiments, as shown in Figure 8 , based on the above humidity control and humidity preservation theory, when the working mode of the air conditioner is the cooling mode, the control mode of the indoor fan of the air conditioner can include the following steps.

[0141] Step 802, the air conditioner starts running.

[0142] Step 804, the indoor environment temperature Tin, the outdoor environment temperature Tout, the relative humidity Rh of the indoor environment, and the instantaneous sampling relative humidity Rhi are obtained.

[0143] Step 806, the indoor environment temperature Tin, the outdoor environment temperature Tout, and the relative humidity Rh of the indoor environment are determined to determine that the air conditioner runs in the cooling mode.

[0144] Step 808, the air conditioner enters the cooling mode, and controls the indoor fan speed (step 810 is executed) or controls the compressor frequency (step 830 is executed).

[0145] Step 810, determine whether the set temperature difference E is greater than the first set temperature (for example, 2℃); if yes, execute step 812; if no, execute step 816.

[0146] Step 812, control the indoor fan to run at the first wind speed. It should be noted that in this mode, if E> 3℃ is detected after the indoor fan is first run at the second wind speed, and the detection lasts for 5 minutes, then the super-high wind needs to be run. The first wind speed can be super-high wind 1250rpm.

[0147] Step 814, determine whether the set temperature difference E is less than or equal to the first set temperature, if yes, execute step 816; if no, execute step 812.

[0148] Step 816, control the indoor fan to run at a second wind speed. The second wind speed is less than the first wind speed. The second wind speed can be medium wind 1000 rpm.

[0149] Step 818, determine whether the condition -2≤ΔR<2 is met for four consecutive sampling periods. Wherein, the relative humidity of the indoor instantaneous sampling is collected every preset sampling period (e.g. 5 min), and ΔR is the difference between the indoor instantaneous sampling relative humidity Rhi of the current sampling period and the indoor instantaneous sampling relative humidity Rh(i-1) of the last sampling period, i.e. ΔR=Rhi-Rh(i-1). If yes, execute step 820; if no, execute step 816.

[0150] Step 820, determine whether the condition -6≤ΔRh<6 is met. Wherein, ΔRh is the difference between the indoor instantaneous sampling relative humidity Rhi of the current sampling period and the set humidity Rhset. If yes, execute step 818; if no, execute step 822.

[0151] Step 822, determine whether the condition ΔRh>6 is met. If yes, execute step 824; if no, execute step 826.

[0152] Step 824, control the indoor fan to lower one gear to a wind speed.

[0153] Step 826, determine whether the condition ΔRh<6 is met. If yes, execute step 828; if no, execute step 820.

[0154] Step 828, control the indoor fan to raise one gear to a wind speed.

[0155] Step 830, enter the refrigeration mode for the first time.

[0156] Step 832, determine whether the condition set temperature difference E>3℃ is met. Wherein, the set temperature difference E is the absolute value of the difference between the indoor environment temperature and the target temperature. If yes, execute step 834; if no, execute step 836.

[0157] Step 834, call the existing powerful refrigeration mode to run.

[0158] Step 836, run in the normal mode.

[0159] Through the above steps 802-836, the air conditioner can ensure the user's use comfort while reducing the energy consumption of the air conditioner.

[0160] The following is a description of the stable comfort stage of the temperature sensation of each user introduced into the indoor environment.

[0161] In the embodiment of the present application, after the air conditioner enters the stable comfort stage, the face region temperature, the human thermal sensation TSV, the indoor environment temperature, the relative humidity, the wind speed, the metabolic rate, and the clothing thermal resistance are collected by the infrared sensor to establish a model and train a large database, and finally a temperature sensation recognition model is established to recognize and predict the individual temperature sensation of the user, and the controller 640 determines the corresponding control strategy according to the output temperature sensation result, so as to meet the individual difference and personalized comfort adjustment requirements of at least one user in the indoor environment.

[0162] As shown in Figure 9 The controller 640 is configured to perform the following steps 910-930.

[0163] Step 910: Obtain the first face region temperature corresponding to the target user collected by the infrared sensor, and obtain the first indoor environment temperature collected by the temperature sensor.

[0164] The target user is any user in the indoor environment.

[0165] Optionally, the infrared sensor and the temperature sensor on the air conditioner can be connected with the controller. The indoor environment temperature collected by the infrared sensor can be stored in an indoor environment temperature database, and the face region temperature collected by the temperature sensor can be stored in a face region temperature database; the indoor environment temperature database can include the temperatures of the indoor environment collected by the temperature sensor in multiple temperature detection periods, and the face region temperature database can include the face region temperatures of each user in the indoor environment collected by the infrared sensor in multiple temperature detection periods. The controller can obtain the first face region temperature corresponding to the target user and the first indoor environment temperature from the indoor environment temperature database and the face region temperature database; the temperature collection period corresponding to the first face region temperature is the same as the temperature collection period corresponding to the first indoor environment temperature.

[0166] Step 920: Input the first face region temperature and the first indoor environment temperature into the temperature sensation recognition model, and determine the temperature sensation result corresponding to the target user according to the first face region temperature and the first indoor environment temperature through the temperature sensation recognition model.

[0167] The first layer decision condition of the temperature sensation recognition model is whether the cheek temperature is less than or equal to the first cheek temperature threshold, the second layer decision condition of the temperature sensation recognition model includes whether the cheek temperature is less than or equal to the second cheek temperature threshold and whether the nose temperature is less than or equal to the first nose temperature threshold, and the second cheek temperature threshold is less than the first cheek temperature threshold.

[0168] In some embodiments, the controller stores a trained thermal sensation recognition model, and the training process of the thermal sensation recognition model can be performed on the air conditioner or other electronic devices or terminal devices. After being trained by other electronic devices or terminal devices, the trained thermal sensation recognition model can be stored on the current air conditioner through migration learning or direct sending.

[0169] Specifically, the training of the thermal sensation recognition model can include the following steps 1) to 4).

[0170] 1) Sample data collection. Compared with the PMV model with physical meaning, the accuracy of the artificial intelligence technology based on big data in predicting human thermal sensation is higher than that of the conventional physical model, and the accuracy depends largely on the amount of sample data involved in the training. Therefore, in actual application, as the amount of sample data increases, the accuracy of the established thermal sensation recognition model will also be improved. Therefore, in order to accurately identify the thermal sensation of the user by the air conditioner, the sample data collection includes the collection of environmental state parameters in various environments and the collection of body surface data of different users. The various environments include environments in different regions, different seasons, different weather conditions, etc. The environmental state parameters include indoor environmental temperature, relative humidity, wind speed, clothing thermal resistance, etc. The different users include sampling populations with different physical characteristics such as different age groups, different genders, and different races. The body surface data of the human body includes skin temperature (such as facial region temperature) of multiple body parts, human thermal sensation, human metabolic rate, etc. Thus, a model training database is established based on the collected sample data to learn the user's thermal sensation variation law by using artificial intelligence technology, so as to improve the accuracy of identifying the individual thermal comfort demand of the user when applied to the air conditioner.

[0171] 2) Model training. The thermal sensation recognition model is constructed using skin temperature data of different facial regions, and the thermal sensation recognition model is selected and optimized by the collected environmental state parameters in various environments and parameters such as human thermal sensation and human metabolic rate. The thermal sensation recognition model established based on the facial region temperature can be fully automated in ideal conditions, and can learn the user's thermal sensation variation law without human intervention to adjust the parameters, thereby improving the modeling efficiency.

[0172] 3) Model generation. During the construction of the thermal sensation recognition model, there are parameters, i.e. hyperparameters, that cannot be directly optimized by algorithms. The optimal thermal sensation recognition model is trained by manually adjusting and selecting the hyperparameters.

[0173] 4) Prediction. The optimal thermal sensation recognition model is tested to predict the accuracy of the thermal sensation recognition model, so as to determine the generalization degree of the optimal thermal sensation recognition model. When the generalization degree of the optimal thermal sensation recognition model reaches a preset degree, the optimal thermal sensation recognition model can be used as the trained thermal sensation recognition model.

[0174] In some embodiments, the thermal sensation result comprises a thermal sensation category, the thermal sensation category comprising a first thermal sensation, a second thermal sensation or a third thermal sensation, the first thermal sensation indicating that the user feels cold, the second thermal sensation indicating that the user feels hot, and the third thermal sensation indicating that the user feels neutral.

[0175] Optionally, the thermal sensation result further comprises a thermal sensation value. One thermal sensation category can correspond to multiple thermal sensation values, different thermal sensation categories correspond to different thermal sensation values, and the number of thermal sensation values corresponding to each thermal sensation category is not limited herein. For example, the thermal sensation values corresponding to the first thermal sensation can include -1 and -2; the thermal sensation values corresponding to the second thermal sensation can include 1, 2 and 3; and the thermal sensation values corresponding to the third thermal sensation can include 0.

[0176] It should be noted that the thermal sensation value can be used to represent the degree of the corresponding thermal sensation category. For example, in the case that the first thermal sensation indicates that the user feels cold, and the thermal sensation values corresponding to the first thermal sensation can include -1 and -2, the thermal sensation value -1 can represent that the target user feels cold, and the thermal sensation value -2 can represent that the target user feels very cold, i.e., the user with the thermal sensation value -2 feels colder than the user with the thermal sensation value -1.

[0177] At step 930, a target operating parameter corresponding to the air conditioner is determined according to the working mode of the air conditioner and the thermal sensation result corresponding to each of the at least one user.

[0178] Since the ambient temperature of the indoor environment is affected by the air flow of the hot or cold air flow output by the air conditioner, and the air flow output by the air conditioner is affected by the circulation flow and state change of the refrigerant, and the circulation flow and state change of the refrigerant are affected by the operating frequency of the compressor. Specifically, the higher the operating frequency of the compressor, the more refrigerant is compressed in a unit of time, the stronger the refrigeration or heating capacity of the air conditioner, the larger the output of the hot or cold air flow, the more significant the temperature change caused by the temperature adjustment of the air conditioner, and the more significant the influence on the ambient temperature of the indoor environment. Therefore, the controller can control the ambient temperature of the indoor environment by adjusting the operating frequency of the compressor of the air conditioner, so that the ambient temperature tends to the desired temperature of the user (the target temperature Ts_comfort of the stable comfort stage), thereby enabling the user to feel comfortable.

[0179] Optionally, the target temperature Ts_comfort of the stable comfort stage can be determined according to the working mode of the air conditioner and the thermal sensation result corresponding to each of the at least one user.

[0180] In some embodiments, if the air conditioner determines that the number of users with a cold temperature sensing result in the indoor environment is large, the current set temperature is increased, that is, when the controller of the air conditioner identifies that the number of users with a cold temperature sensing result is greater than the first quantity threshold through the temperature sensing identification model, a temperature increase signal is sent to increase the temperature based on the current set temperature, for example, if the current set temperature is 20°C, the target temperature after the increase can be 21°C; or, after determining that the number of users with a neutral temperature sensing result is greater than the first quantity threshold, a temperature maintenance signal is sent to keep the current set temperature unchanged; or, after determining that the number of users with a hot temperature sensing result is greater than the first quantity threshold, a temperature decrease signal is sent to decrease the temperature based on the current set temperature, for example, if the current set temperature is 20°C, the target temperature after the decrease is 19°C. The first quantity threshold is determined by the number of users in the current indoor environment. In this way, the current set temperature is adjusted in the above manner, and the air conditioner operates according to the adjusted target temperature, so as to achieve the purpose of individual thermal comfort control for users and meet the individual comfort adjustment needs of target users.

[0181] The target operating parameters corresponding to the air conditioner refer to various operating parameters that the air conditioner needs to achieve in order to adjust the environmental temperature of the indoor environment to be close to the user's expected temperature (the first target temperature or the second target temperature).

[0182] Optionally, the target operating parameters corresponding to the air conditioner can include, but are not limited to, one or more of the target operating frequency of the compressor, the target rotating speed of the fan, the target opening degree of the electronic expansion valve, the target angle of the air deflector, and the target opening degree of the air valve.

[0183] The operating frequency of the compressor can control the amount of refrigerant compressed per unit time, thereby affecting the refrigeration or heating capacity of the air conditioner and the flow rate of the output air flow. The rotating speed of the fan can affect the flow rate and air volume of the output air flow of the air conditioner. The opening degree of the electronic expansion valve can control the flow rate and pressure of the refrigerant, thereby affecting the refrigeration or heating effect of the air conditioner. The angle of the air deflector and the opening degree of the air valve can adjust the wind direction and wind speed of the output air flow of the air conditioner.

[0184] For example, in the case where the air conditioner is in a heating mode, if the controller determines through the temperature sensing identification model that the number of users with a cold temperature sensing result in the indoor environment is greater than the first quantity threshold, the rotating speed of the indoor fan of the air conditioner is increased; if the controller determines through the temperature sensing identification model that the number of users with a hot temperature sensing result in the indoor environment is greater than the first quantity threshold, the rotating speed of the indoor fan of the air conditioner is decreased.

[0185] For example, when the air conditioner is in the cooling mode, if the controller determines, through the thermal sensation recognition model, that the number of users with a thermal sensation result of being too cold in the indoor environment is greater than the first quantity threshold, the controller reduces the rotation speed of the indoor fan of the air conditioner; if the controller determines, through the thermal sensation recognition model, that the number of users with a thermal sensation result of being too hot in the indoor environment is greater than the first quantity threshold, the controller increases the rotation speed of the indoor fan of the air conditioner.

[0186] In some embodiments, after determining the target operating parameter corresponding to the air conditioner, the controller controls the air conditioner to operate according to the target operating parameter, so that the temperature adjusted by the air conditioner approaches the first target temperature or the second target temperature, thereby bringing a comfortable environmental temperature for at least one user in the indoor environment.

[0187] In the embodiments of the present application, the face region temperature of the user and the indoor environment temperature are obtained, a preliminary judgment is made through the first layer decision condition (whether the cheek temperature is less than or equal to the first cheek temperature threshold) of the thermal sensation recognition model, then, in combination with different face region temperatures of the user, the cheek temperature with the largest face proportion is first considered, and then the further cheek temperature and the nose temperature are combined to further adjust the recognition result of the first layer, so that the thermal sensation of the individual user can be more accurately quantified, a thermal sensation decision branch is formed, so that the controller of the air conditioner can accurately identify and predict the thermal sensation result of each user in the indoor environment; and the controller adjusts the operating parameter of the air conditioner according to the accurate thermal sensation result corresponding to at least one user, so that the indoor environment temperature can more accurately meet the temperature demand of at least one user in the indoor environment, so that the air conditioner can not only meet the comfort demand of the general public, but also realize the individual comfort demand of each user.

[0188] In some embodiments, as shown in Figure 10 The step of determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user according to the first face region temperature and the first indoor environment temperature can include the following steps 1002-1010.

[0189] Step 1002: Determine, by the thermal sensation recognition model, whether the first cheek temperature in the first face region temperature is less than or equal to the first cheek temperature threshold. If yes, the controller 640 performs step 1004; if no, the controller 640 performs step 1014.

[0190] Step 1004: If the first cheek temperature is less than or equal to the first cheek temperature threshold, determine, by the thermal sensation recognition model, whether the first cheek temperature is less than or equal to the second cheek temperature threshold. If yes, the controller 640 performs step 1006; if no, the controller 640 performs step 1008.

[0191] Step 1006, in a case where the first cheek temperature is less than or equal to the first cheek temperature threshold, determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the first thermal sensation or the second thermal sensation or the third thermal sensation.

[0192] Step 1008, in a case where the first cheek temperature is greater than the second cheek temperature threshold, determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the first thermal sensation or the third thermal sensation.

[0193] Step 1010, if the first cheek temperature is greater than the first cheek temperature threshold, determining, by the thermal sensation recognition model, whether the first nose temperature in the first facial region temperature is less than or equal to the first nose temperature threshold. If yes, the controller 640 performs step 1012; if no, the controller 640 performs step 1014.

[0194] Step 1012, in a case where the first nose temperature is less than or equal to the first nose temperature threshold, determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the first thermal sensation or the second thermal sensation or the third thermal sensation.

[0195] Step 1014, in a case where the first nose temperature is greater than the first nose temperature threshold, determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the second thermal sensation or the third thermal sensation.

[0196] Specifically, if the first nose temperature is less than or equal to the first nose temperature threshold, determining, by the thermal sensation recognition model, whether the first nose temperature is less than or equal to the second nose temperature threshold; in a case where the first nose temperature is less than or equal to the second nose temperature threshold, determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the first thermal sensation or the third thermal sensation; in a case where the first cheek temperature is greater than the second nose temperature threshold, determining, by the thermal sensation recognition model, the thermal sensation result corresponding to the target user as the second thermal sensation or the third thermal sensation.

[0197] Specifically, if the first cheek temperature is less than or equal to the second cheek temperature threshold, the temperature sensing recognition model is used to determine whether the first indoor ambient temperature is less than or equal to the first ambient temperature threshold; if the first indoor ambient temperature is greater than the first ambient temperature threshold, the temperature sensing recognition model is used to determine whether the first nose temperature is less than or equal to the fourth nose temperature threshold; when the first nose temperature is less than or equal to the fourth nose temperature threshold, the temperature sensing recognition model is used to determine that the temperature sensing result corresponding to the target user is the third temperature sensing; if the first nose temperature is greater than the fourth nose temperature threshold, the temperature recognition model is used to determine whether the first indoor ambient temperature is less than or equal to the fifth ambient temperature threshold; when the first indoor ambient temperature is less than or equal to the fifth ambient temperature threshold, the temperature sensing recognition model is used to determine that the temperature sensing result corresponding to the target user is the first temperature sensing; when the first indoor ambient temperature is greater than the fifth ambient temperature threshold, the temperature sensing recognition model is used to determine that the temperature sensing result corresponding to the target user is the second temperature sensing.

[0198] Specifically, if the first nose temperature is less than or equal to the second nose temperature threshold, the temperature sensing recognition model is used to determine whether the first indoor ambient temperature is less than or equal to the fourth ambient temperature threshold; when the first indoor ambient temperature is greater than the fourth ambient temperature threshold, the temperature sensing result corresponding to the target user is determined to be the third temperature sensing; if the first indoor ambient temperature is less than or equal to the fourth ambient temperature threshold, the temperature sensing recognition model is used to determine whether the first indoor ambient temperature is less than or equal to the sixth ambient temperature threshold; when the first indoor ambient temperature is less than or equal to the sixth ambient temperature threshold, the temperature sensing result corresponding to the target user is determined to be the third temperature sensing; when the first indoor ambient temperature is greater than the sixth ambient temperature threshold, the temperature sensing result corresponding to the target user is determined to be the first temperature sensing.

[0199] In an embodiment of the present application, the controller uses a temperature recognition model to perform a hierarchical assessment of the first cheek temperature. If the first cheek temperature is between a first cheek temperature threshold and a second cheek temperature threshold, the controller determines the target user's temperature sensation as being cool or neutral. If both the first cheek temperature and the first nose temperature are greater than the first cheek temperature threshold, the controller determines the target user's temperature sensation as being warm or neutral. This allows the temperature recognition model to generate temperature prediction branches for different user facial features, avoiding the limitations of a single temperature threshold. This allows the temperature recognition model to more accurately align the temperature sensation results with the target user's temperature requirements, thereby improving the accuracy of user temperature recognition.

[0200] In some embodiments, as Figure 11A - Figure 11C As shown in the figure, the temperature sensing recognition model includes five layers of decision conditions and a total of 25 decision branches; the leaf node corresponding to each decision branch is the temperature sensing result.

[0201] In some specific embodiments, the third layer decision condition of the thermal sensation recognition model comprises whether the indoor environment temperature is less than or equal to a first environment temperature threshold, whether the nose temperature is less than or equal to a second nose temperature threshold, whether the indoor environment temperature is less than or equal to a second environment temperature threshold, and whether the indoor environment temperature is less than or equal to a third environment temperature threshold; the second nose temperature threshold is less than the first nose temperature threshold, the first environment temperature threshold is less than the third environment temperature threshold, and the second environment temperature threshold is less than the first environment temperature threshold.

[0202] In some specific embodiments, the fourth layer decision condition of the thermal sensation recognition model comprises whether the nose temperature is less than or equal to a third nose temperature threshold, whether the nose temperature is less than or equal to a fourth nose temperature threshold, whether the forehead temperature is less than or equal to a first forehead temperature threshold, whether the indoor environment temperature is less than or equal to a fourth environment temperature threshold, whether the forehead temperature is less than or equal to a second forehead temperature threshold, whether the cheek temperature is less than or equal to a third cheek temperature threshold, and whether the forehead temperature is less than or equal to a third forehead temperature threshold; wherein the third nose temperature threshold is less than the second nose temperature threshold, and the fourth nose temperature threshold is less than the third nose temperature threshold; the first forehead temperature threshold is less than the second forehead temperature threshold, and the second forehead temperature threshold is less than the third forehead temperature threshold; the fourth environment temperature threshold is less than the third environment temperature threshold and greater than the first environment temperature threshold; and the third cheek temperature threshold is greater than the first cheek temperature threshold.

[0203] In some specific embodiments, the facial region temperature comprises an eye temperature; and the fifth layer decision condition of the thermal sensation recognition model comprises whether the nose temperature is less than or equal to a fifth nose temperature threshold; whether the indoor environment temperature is less than or equal to a fifth environment temperature threshold; whether the eye temperature is less than or equal to a first eye temperature threshold; whether the nose temperature is less than or equal to a sixth nose temperature threshold; whether the indoor environment temperature is less than or equal to a sixth environment temperature threshold; whether the cheek temperature is less than or equal to a fourth cheek temperature threshold; whether the nose temperature is less than or equal to a seventh nose temperature threshold; whether the indoor environment temperature is less than or equal to a seventh environment temperature threshold; whether the eye temperature is less than or equal to a second eye temperature threshold; whether the indoor environment temperature is less than or equal to an eighth environment temperature threshold;

[0204] Among them, the fifth nose temperature threshold is greater than the third nose temperature threshold and less than the second nose temperature threshold, the sixth nose temperature threshold is greater than the fourth nose temperature threshold and less than the third nose temperature threshold, and the seventh nose temperature threshold is greater than the second nose temperature threshold and less than the first nose temperature threshold; the fifth ambient temperature threshold is less than the sixth ambient temperature threshold and greater than the first ambient temperature threshold, the sixth ambient temperature threshold is less than the fourth ambient temperature threshold, the seventh ambient temperature threshold is greater than the third ambient temperature threshold, and the eighth ambient temperature threshold is greater than the seventh ambient temperature threshold; the first eye temperature threshold is less than the second eye temperature threshold; and the fourth cheek temperature threshold is less than the third cheek temperature threshold and greater than the second cheek temperature threshold.

[0205] For example, in Figure 11A - Figure 11C In the temperature sensing recognition model shown, the fourth nose temperature threshold (such as 31.35°C) is smaller than the sixth nose temperature threshold (such as 31.50°C), smaller than the third nose temperature threshold (such as 32.05°C), smaller than the fifth nose temperature threshold (such as 33.55°C), smaller than the second nose temperature threshold (such as 34.35°C), smaller than the seventh nose temperature threshold (such as 35.35°C), and smaller than the first nose temperature threshold (such as 35.65°C).

[0206] For example, in Figure 11A - Figure 11C In the temperature sensing recognition model shown, the second ambient temperature threshold (such as 16.25°C) is less than the first ambient temperature threshold (such as 19.35°C), less than the fifth ambient temperature threshold (such as 21.10°C), less than the sixth ambient temperature threshold (such as 23.10°C), less than the fourth ambient temperature threshold (such as 23.75°C), less than the third ambient temperature threshold (such as 28.75°C), less than the seventh ambient temperature threshold (such as 30.05°C), and less than the eighth ambient temperature threshold (such as 30.95°C).

[0207] For example, in Figure 11A - Figure 11C In the temperature recognition model shown, the second cheek temperature threshold (such as 30.85°C) is smaller than the first cheek temperature threshold (such as 31.95°C), smaller than the fourth cheek temperature threshold (such as 35.05°C), and smaller than the third cheek temperature threshold (such as 37.70°C).

[0208] For example, in Figure 11A - Figure 11C In the temperature recognition model shown, the first eye temperature threshold (eg, 33.55° C.) is smaller than the second eye temperature threshold (eg, 36.55° C.).

[0209] For example, in Figure 11A - Figure 11C In the temperature recognition model shown, the first forehead temperature threshold (such as 33.95° C.) is smaller than the second forehead temperature threshold (such as 34.55° C.), and smaller than the third forehead temperature threshold (such as 37.25° C.).

[0210] likeFigure 11A - Figure 11C As shown, 23 decision branches contained in the temperature sensing recognition model and corresponding temperature sensing results are as follows, wherein the nose temperature is T 鼻子 , the cheek temperature is T 脸颊 , the forehead temperature is T 额头 , the eye temperature is T 眼睛 , and the indoor environment temperature is T 室内环境 .

[0211] Specifically, the first decision branch: as shown in Figure 11A , in the case that the first cheek temperature satisfies T 脸颊 ≤ T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤ T 第二脸颊温度阈值 , further the first indoor environment temperature satisfies T 室内环境 ≤ T 第一环境温度阈值 , further the first nose temperature satisfies T 鼻子 ≤ T 第三鼻子温度阈值 , the corresponding temperature sensing result of the first decision branch is the first temperature sensing cold.

[0212] Specifically, the second decision branch: as shown in Figure 11A , in the case that the first cheek temperature satisfies T 脸颊 ≤ T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤ T 第二脸颊温度阈值 , further the first indoor environment temperature satisfies T 室内环境 ≤ T 第一环境温度阈值 , further the first nose temperature satisfies T 鼻子 > T 第三鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 ≤ T 第五鼻子温度阈值 , the corresponding temperature sensing result of the second decision branch is the third temperature sensing neutral.

[0213] Specifically, the third decision branch: as shown in Figure 11A , in the case that the first cheek temperature satisfies T 脸颊 ≤ T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤ T 第二脸颊温度阈值 , further the first indoor environment temperature satisfies T 室内环境 ≤ T 第一环境温度阈值 , further the first nose temperature satisfies T 鼻子 > T 第三鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 > T 第五鼻子温度阈值 , the corresponding temperature sensing result of the third decision branch is the first temperature sensing cold.

[0214] Specifically, the fourth decision branch: asFigure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第一环境温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第四鼻子温度阈值 In the case of , the temperature sensing result corresponding to the third decision branch is the third temperature sensing neutral.

[0215] Specifically, the fifth decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第一环境温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第四鼻子温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第五环境温度阈值 In the case of , the temperature sensation result corresponding to the fourth decision branch is that the first temperature sensation is cold.

[0216] Specifically, the sixth decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第一环境温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第四鼻子温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第五环境温度阈值 In this case, the temperature sensing result corresponding to the fifth decision branch is the second temperature sensing being hot.

[0217] Specifically, the seventh decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第二环境温度阈值 In the case of , the temperature sensing result corresponding to the sixth decision branch is that the first temperature sensing is relatively cold.

[0218] Specifically, the eighth decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第二环境温度阈值 , further the first forehead temperature satisfies T 额头 ≤T 第一额头温度阈值 , further the first eye temperature satisfies T 眼睛 ≤T 第一眼睛温度阈值 In the case of , the temperature sensation result corresponding to the seventh decision branch is that the first temperature sensation is cold.

[0219] Specifically, the ninth decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第二环境温度阈值 , further the first forehead temperature satisfies T 额头 ≤T 第一额头温度阈值 , further the first eye temperature satisfies T 眼睛 >T 第一眼睛温度阈值 In the case of , the temperature sensing result corresponding to the eighth decision branch is the third temperature sensing neutral.

[0220] Specifically, the tenth decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第二环境温度阈值 , further the first forehead temperature satisfies T 额头 >T 第一额头温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第六鼻子温度阈值 In the case of , the temperature sensing result corresponding to the tenth decision branch is the third temperature sensing neutral.

[0221] Specifically, the eleventh decision branch: Figure 11A As shown, at the first cheek temperature T 脸颊 ≤T 第一脸颊温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第二脸颊温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第二环境温度阈值, further the first forehead temperature satisfies T 额头 >T 第一额头温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第六鼻子温度阈值 In the case of , the temperature sensing result corresponding to the eleventh decision branch is the third temperature sensing neutral.

[0222] Specifically, the twelfth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第二鼻子温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第四环境温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第六环境温度阈值 In the case of , the temperature sensing result corresponding to the twelfth decision branch is the third temperature sensing neutral.

[0223] Specifically, the thirteenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第二鼻子温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第四环境温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第六环境温度阈值 In the case of , the temperature sensation result corresponding to the thirteenth decision branch is that the first temperature sensation is cold.

[0224] Specifically, the fourteenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第二鼻子温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第四环境温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤T 第四脸颊温度阈值 In the case of , the temperature sensing result corresponding to the fourteenth decision branch is the third temperature sensing neutral.

[0225] Specifically, the fifteenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第二鼻子温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第四环境温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第四脸颊温度阈值 In the case of , the temperature sensing result corresponding to the fifteenth decision branch is the third temperature sensing neutral.

[0226] Specifically, the sixteenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第二鼻子温度阈值 , further the first forehead temperature satisfies T 额头 ≤T 第二额头温度阈值 , further the first nose temperature satisfies T 鼻子 ≤T 第七鼻子温度阈值 In the case of , the temperature sensing result corresponding to the sixteenth decision branch is the third temperature sensing neutral.

[0227] Specifically, the seventeenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第二鼻子温度阈值 , further the first forehead temperature satisfies T 额头 ≤T 第二额头温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第七鼻子温度阈值 In the case of , the temperature sense result corresponding to the seventeenth decision branch is the second temperature sense being hot.

[0228] Specifically, the eighteenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第二鼻子温度阈值 , further the first forehead temperature satisfies T 额头 >T 第二额头温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第七环境温度阈值 In the case of , the temperature sensing result corresponding to the eighteenth decision branch is the third temperature sensing neutral.

[0229] Specifically, the nineteenth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , enter ① process, refer to Figure 11B As shown, the first nose temperature further satisfies T 鼻子 ≤T 第一鼻子温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第二鼻子温度阈值 , further the first forehead temperature satisfies T 额头 >T 第二额头温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第七环境温度阈值 In the case of , the temperature sensing result corresponding to the nineteenth decision branch is the second temperature sensing being hot.

[0230] Specifically, the twentieth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第一鼻子温度阈值 , enter ② process, refer to Figure 11C As shown, the first indoor ambient temperature satisfies T 室内环境 ≤T 第三环境温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤T 第三脸颊温度阈值 , further the first eye temperature satisfies T 眼睛 ≤T 第二眼睛温度阈值 In the case of , the temperature sense result corresponding to the twentieth decision branch is the third temperature sense neutral.

[0231] Specifically, the twenty-first decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第一鼻子温度阈值 , enter ② process, refer to Figure 11C As shown, the first indoor ambient temperature satisfies T 室内环境 ≤T 第三环境温度阈值 , further the first cheek temperature satisfies T 脸颊 ≤T 第三脸颊温度阈值, further the first eye temperature satisfies T 眼睛 >T 第二眼睛温度阈值 In the case of , the temperature sensing result corresponding to the twenty-first decision branch is the third temperature sensing neutral.

[0232] Specifically, the twenty-second decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第一鼻子温度阈值 , enter ② process, refer to Figure 11C As shown, the first indoor ambient temperature satisfies T 室内环境 ≤T 第三环境温度阈值 , further the first cheek temperature satisfies T 脸颊 >T 第三脸颊温度阈值 In the case of , the temperature sensing result corresponding to the twenty-second decision branch is that the second temperature sensing is hot.

[0233] Specifically, the twenty-third decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第一鼻子温度阈值 , enter ② process, refer to Figure 11C As shown, the first indoor ambient temperature satisfies T 室内环境 >T 第三环境温度阈值 , further the first forehead temperature satisfies T 额头 ≤T 第三额头温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 ≤T 第八环境温度阈值 In the case of , the temperature sense result corresponding to the twenty-third decision branch is the second temperature sense being hot.

[0234] Specifically, the twenty-fourth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值 , further the first nose temperature satisfies T 鼻子 >T 第一鼻子温度阈值 , enter ② process, refer to Figure 11C As shown, the first indoor ambient temperature satisfies T 室内环境 >T 第三环境温度阈值 , further the first forehead temperature satisfies T 额头 ≤T 第三额头温度阈值 , further the first indoor ambient temperature satisfies T 室内环境 >T 第八环境温度阈值 In the case of , the temperature sensing result corresponding to the twenty-fourth decision branch is the third temperature sensing neutral.

[0235] Specifically, the twenty-fifth decision branch: when the first cheek temperature satisfies T 脸颊 >T 第一脸颊温度阈值, further the first nose temperature satisfies T 鼻子 > T 第一鼻子温度阈值 , enters the ② flow, and specifically refers to Figure 11C , further the first indoor environment temperature satisfies T 室内环境 > T 第三环境温度阈值 , further the first forehead temperature satisfies T 额头 > T 第三额头温度阈值 , the twenty-fifth decision branch corresponds to the third temperature sensing neutral.

[0236] In the above 25 decision branches and corresponding temperature sensing results, if the temperature sensing result is the first temperature sensing cold, that is, the user's current feeling temperature is low, the current set temperature is increased to increase the user's body temperature and improve comfort. If the temperature sensing result is the second temperature sensing hot, that is, the user's current feeling temperature is high, the current set temperature is reduced to reduce the user's body temperature and improve comfort. If the temperature sensing result is the third temperature sensing neutral, that is, the user's current feeling is neither cold nor hot, at this time, the current set temperature can be maintained, that is, the air conditioner can currently meet the user's individual comfort needs.

[0237] In some embodiments, as shown in Figure 12 , the controller 640 is configured to perform the following steps 1202-1208.

[0238] Step 1202, acquiring the first facial region temperature corresponding to the target user collected by the infrared sensor in the current detection period, and acquiring the first indoor environment temperature collected by the temperature sensor in the current detection period.

[0239] Step 1204, inputting the first facial region temperature and the first indoor environment temperature into the temperature sensing identification model, and determining the first temperature sensing result corresponding to the target user and the current detection period according to the first facial region temperature and the first indoor environment temperature through the temperature sensing identification model.

[0240] The related description of determining the first temperature sensing result corresponding to the target user and the current detection period in steps 1202-1204 can refer to the related description of steps 910-920 in the above embodiments, which will not be repeated here.

[0241] Step 1206, determining the temperature sensing result corresponding to the target user according to the first temperature sensing result corresponding to the target user and at least two detection periods respectively.

[0242] In some embodiments, the controller of the air conditioner can store the first temperature sensing result corresponding to the target user and each detection period until the number of stored detection periods reaches a preset number; the controller can statistically process the first temperature sensing result corresponding to at least two stored detection periods to determine the temperature sensing result corresponding to the target user, which can improve the identification accuracy of the temperature sensing of the target user.

[0243] Optionally, the controller may adopt statistical methods including but not limited to the mean, mode, median, etc. of multiple first temperature sensing results.

[0244] For example, taking the majority as an example, the air conditioner collects the facial area temperature of the target user and the corresponding indoor environment temperature, and inputs the facial area temperature and the corresponding indoor environment temperature into the temperature sensing recognition model to obtain the corresponding first temperature sensing result; assuming the preset number is 5, the first temperature sensing results output after 5 judgments by the temperature sensing recognition model are: slightly hot, slightly cold, neutral, slightly hot, slightly hot, among which the number of slightly hot is the largest, so the temperature sensing result of the target user is slightly hot.

[0245] Step 1208: Determine target operating parameters corresponding to the air conditioner according to the operating mode of the air conditioner and the temperature sensing result corresponding to at least one user.

[0246] For the description of step 1208 , please refer to the description of step 940 in the above embodiment, which will not be repeated here.

[0247] In an embodiment of the present application, the air conditioner obtains the first temperature sensing results corresponding to the target user in multiple detection cycles and integrates the first temperature sensing results of multiple detection cycles, thereby reducing the random error of a single temperature acquisition and the randomness of the results of a single pass through the temperature sensing recognition model, thereby ensuring the accuracy and stability of the temperature sensing results corresponding to the final target user.

[0248] In some embodiments, as Figure 13 As shown, the step of determining the target operating parameters corresponding to the air conditioner according to the working mode of the air conditioner and the temperature sensing result corresponding to at least one user may include the following steps 1302 to 1308.

[0249] Step 1302 : Determine the temperature sensitivity value range to which each temperature sensitivity value belongs based on the temperature sensitivity value corresponding to at least one user.

[0250] The temperature sensitivity value can be used to represent the degree of the corresponding temperature sensitivity category.

[0251] Step 1304: Determine a temperature compensation value based on each temperature sensing value range and the operating mode of the air conditioner.

[0252] In some embodiments, the controller may perform statistics on each temperature sensing value range to determine the target temperature sensing value range that includes the largest number of users, and then determine the target temperature compensation value corresponding to the target temperature sensing value range based on the correspondence between the temperature sensing value range and the temperature compensation value (as shown in Table 5).

[0253] Table 5

[0254] Temperature sensation range Temperature compensation value (°C) [-3,-2) +2 [-2,-1) +1 [-1,1] 0 (1,2] -1 (2,3] -2

[0255] Optionally, the controller can further acquire the outdoor environment temperature Tout, the clothing resistance clo of the user and the human metabolic rate M of the user, determine the first temperature compensation value corresponding to each user in the indoor environment through Table 3, and take the sum of the average of the first temperature compensation value corresponding to each user and the target temperature compensation value as the temperature compensation value of the current air conditioner.

[0256] In step 1306, the current set temperature of the air conditioner is temperature-compensated based on the temperature compensation value to obtain a target temperature.

[0257] Optionally, the controller can take the sum of the current set temperature of the air conditioner and the temperature compensation value as the target temperature.

[0258] In step 1308, the target operating parameter corresponding to the air conditioner is adjusted according to the target temperature.

[0259] In the embodiments of the present application, the air conditioner maps the thermal sensation values of each user to a corresponding numerical range, so that the thermal sensation states of each user are quantitatively classified, which provides a basis for determining the temperature compensation value, and the temperature compensation value is determined according to the current mode of the air conditioner, the current set temperature is corrected in real time based on the temperature compensation value, the target temperature that takes into account the group comfort and the individual thermal sensation is obtained, and the target operating parameter is adjusted based on the target temperature, so that the air conditioner can meet the comfort needs of the general public while also achieving the individual comfort needs of each user.

[0260] In some embodiments, the air conditioner further comprises an air supply assembly; the air supply assembly is configured to deliver air flow to the indoor environment, and an air supply range covered by the air supply assembly is divided into a plurality of air supply areas; the target operating parameter comprises an air supply direction of the air supply assembly.

[0261] Optionally, as shown in Figure 14 from the perspective of top view, the air supply range covered by the air supply assembly is a sector with a radius of 5 meters and an angular radian of 120°, and according to the area of the sector, the air supply range can be equally divided into 5 air supply areas.

[0262] In some embodiments, as shown in Figure 15 , the step of determining the target operating parameter corresponding to the air conditioner according to the working mode of the air conditioner and the thermal sensation results respectively corresponding to at least one user can include the following steps 1502-1510.

[0263] In step 1502, the position information respectively corresponding to at least one user is acquired.

[0264] In some embodiments, the air conditioner can further comprise a positioning module configured to determine user positions of at least one user in the indoor environment corresponding to the air conditioner.

[0265] Optionally, the positioning module can comprise a near field communication module configured to establish a near field communication connection with each of a plurality of terminal devices in the indoor environment corresponding to the air conditioner, receive a near field communication signal transmitted by each of the terminal devices, and determine a distance between each of the terminal devices and the air conditioner based on the near field communication signal transmitted by each of the terminal devices to obtain position information of at least one user.

[0266] Near field communication refers to data transmission between two parties within a short distance (usually a few meters to tens of meters). The near field communication connection can include, but is not limited to, Bluetooth, Wi-Fi Direct, UWB, NFC, etc.

[0267] In the indoor environment, each user has a corresponding terminal device, which can be a mobile phone, a computer, a wearable device, etc. Since various terminal devices currently have near field communication functions, each user does not need to carry a special positioning device for communication with the positioning module, but only needs to use the existing terminal device to realize positioning communication with the air conditioner. In addition, the connection process of near field communication is usually simple and can quickly establish a connection, thereby ensuring the accuracy of positioning and realizing the convenience and low cost of user positioning.

[0268] Optionally, the near field communication signal transmitted by the terminal device can include, but is not limited to, device identification information, signal strength information, timestamp information, etc.

[0269] The device identification information is used to uniquely identify the terminal device and can include a MAC address, a Bluetooth address, a corresponding user, etc. of the terminal device, so that the positioning module of the air conditioner can distinguish different users and terminal devices through the device identification information.

[0270] The signal strength information can include RSSI (Received Signal Strength Indicator), and the positioning module can estimate the distance between the terminal device and the air conditioner based on the signal strength information and a signal propagation model.

[0271] The timestamp information is used to calculate the propagation time of the near field communication signal to determine the distance between the air conditioner and the terminal device.

[0272] In some embodiments, the controller may further obtain location information corresponding to at least one user based on historical data; the historical data may include historical user locations of different users in different time periods.

[0273] Taking the office scene as an example, since the user positions corresponding to each user in the office scene are relatively fixed and the movements of each user are relatively regular, the controller can record the positions of each user at historical moments and use them to determine the user positions of each user at the current moment.

[0274] Step 1504: Determine the air supply area corresponding to each user based on the location information corresponding to each user.

[0275] In some embodiments, the controller may determine the air supply area corresponding to the air supply range of each user position based on the air supply range corresponding to each air supply area and each user position.

[0276] Step 1506: Determine the target temperature sensation corresponding to each ventilation area according to the temperature sensation results corresponding to each user included in each ventilation area.

[0277] In some embodiments, the controller may use the temperature sensing result that appears the most times among the multiple temperature sensing results included in each air supply area as the target temperature sensing corresponding to each air supply area.

[0278] Step 1508 : determining a target air supply area from the plurality of air supply areas based on the working mode of the air conditioner, the target temperature corresponding to each air supply area, and the number of users included in each air supply area.

[0279] Optionally, the controller determines the target air supply area from multiple air supply areas based on the working mode of the air conditioner, the target temperature corresponding to each air supply area, and the number of users included in each air supply area, in accordance with the principle of "air panel cooling prioritizes air away from people and supplies air to the heat-sensitive area, and heating prioritizes air blowing on people and supplies air to the cold-sensitive area".

[0280] Specifically, when the air conditioner is in cooling mode, if a certain air supply area has the largest number of users and the target temperature result corresponding to this air supply area is relatively hot, then this air supply area can be determined as the target air supply area; if the target temperature result of this air supply area is relatively cold, then the air supply component should avoid this air supply area as much as possible when delivering airflow. If there are multiple air supply areas with target temperature results corresponding to them that are all relatively hot, then these air supply areas can all be designated as target air supply areas, and the air supply component can be controlled to deliver airflow to the multiple target air supply areas in a sweeping manner.

[0281] Step 1510: Adjust the air supply direction of the air supply assembly according to the target air supply area so that the air supply assembly delivers airflow toward the target air supply area.

[0282] In the embodiment of the present application, the target air supply area is selected from the plurality of air supply areas by comprehensively considering the target thermal sensation corresponding to each air supply area, the number of users, and the working mode of the air conditioner, and the air supply assembly is caused to deliver airflow toward the target air supply area, so as to meet the thermal sensation demand of the users in the target air supply area, and the air conditioner can realize precise air supply and avoid invalid energy consumption caused by global air supply.

[0283] As shown in Figure 16 In one embodiment, a parameter control method of an air conditioner is provided, which can be applied to the air conditioner 100 described above. The method can include the following steps 1610 to step 1630.

[0284] Step 1610, acquiring a first facial area temperature corresponding to a target user collected by an infrared sensor, and acquiring a first indoor environment temperature collected by a temperature sensor; the target user is any user in an indoor environment where the air conditioner is located.

[0285] Step 1620, inputting the first facial area temperature and the first indoor environment temperature into a thermal sensation recognition model, and determining a thermal sensation result corresponding to the target user according to the first facial area temperature and the first indoor environment temperature through the thermal sensation recognition model.

[0286] The first layer decision condition of the thermal sensation recognition model is whether the cheek temperature is less than or equal to a first cheek temperature threshold value, the second layer decision condition of the thermal sensation recognition model includes whether the cheek temperature is less than or equal to a second cheek temperature threshold value and whether the nose temperature is less than or equal to a first nose temperature threshold value, and the second cheek temperature threshold value is less than the first cheek temperature threshold value; the thermal sensation result includes a thermal sensation category, and the thermal sensation category includes a first thermal sensation, a second thermal sensation, or a third thermal sensation, the first thermal sensation indicates that the user's thermal sensation is cold, the second thermal sensation indicates that the user's thermal sensation is hot, and the third thermal sensation indicates that the user's thermal sensation is neutral.

[0287] Step 1630, determining a target operating parameter corresponding to the air conditioner according to the working mode of the air conditioner and the thermal sensation result corresponding to at least one user in the indoor environment.

[0288] In some embodiments, step 1620 can include: determining, by the thermosensitive recognition model, whether the first cheek temperature in the first facial region temperature is less than or equal to a first cheek temperature threshold; if the first cheek temperature is less than or equal to the first cheek temperature threshold, determining, by the thermosensitive recognition model, whether the first cheek temperature is less than or equal to a second cheek temperature threshold; if the first cheek temperature is greater than the second cheek temperature threshold, determining, by the thermosensitive recognition model, that the thermosensitive result corresponding to the target user is the first thermosensitive result or a third thermosensitive result; if the first cheek temperature is greater than the first cheek temperature threshold, determining, by the thermosensitive recognition model, whether the first nose temperature in the first facial region temperature is less than or equal to a first nose temperature threshold; if the first nose temperature is greater than the first nose temperature threshold, determining, by the thermosensitive recognition model, that the thermosensitive result corresponding to the target user is the second thermosensitive result or the third thermosensitive result.

[0289] Optionally, the third layer decision condition of the thermosensitive recognition model includes whether the indoor environment temperature is less than or equal to a first environment temperature threshold, whether the nose temperature is less than or equal to a second nose temperature threshold, whether the indoor environment temperature is less than or equal to a second environment temperature threshold, and whether the indoor environment temperature is less than or equal to a third environment temperature threshold; the second nose temperature threshold is less than the first nose temperature threshold, the first environment temperature threshold is less than the third environment temperature threshold, and the second environment temperature threshold is less than the first environment temperature threshold.

[0290] In some embodiments, the parameter control method of the air conditioner further includes: if the first nose temperature is less than or equal to the first nose temperature threshold, determining, by the thermosensitive recognition model, whether the first nose temperature is less than or equal to a second nose temperature threshold; if the first nose temperature is less than or equal to the second nose temperature threshold, determining, by the thermosensitive recognition model, that the thermosensitive result corresponding to the target user is the first thermosensitive result or a third thermosensitive result; if the first cheek temperature is greater than the second nose temperature threshold, determining, by the thermosensitive recognition model, that the thermosensitive result corresponding to the target user is the second thermosensitive result or the third thermosensitive result.

[0291] In some embodiments, the facial region temperatures include a forehead temperature; the fourth layer decision condition of the thermosensitive recognition model includes whether the nose temperature is less than or equal to a third nose temperature threshold, whether the nose temperature is less than or equal to a fourth nose temperature threshold, whether the forehead temperature is less than or equal to a first forehead temperature threshold, whether the indoor environment temperature is less than or equal to a fourth environment temperature threshold, whether the forehead temperature is less than or equal to a second forehead temperature threshold, whether the cheek temperature is less than or equal to a third cheek temperature threshold, and whether the forehead temperature is less than or equal to a third forehead temperature threshold; wherein the third nose temperature threshold is less than the second nose temperature threshold, and the fourth nose temperature threshold is less than the third nose temperature threshold; the first forehead temperature threshold is less than the second forehead temperature threshold, and the second forehead temperature threshold is less than the third forehead temperature threshold; the fourth environment temperature threshold is less than the third environment temperature threshold and greater than the first environment temperature threshold; and the third cheek temperature threshold is greater than the first cheek temperature threshold.

[0292] Optionally, the fifth layer decision condition of the thermosensitive recognition model includes that the facial region temperatures include an eye temperature; the fifth layer decision condition of the thermosensitive recognition model includes whether the nose temperature is less than or equal to a fifth nose temperature threshold; whether the indoor environment temperature is less than or equal to a fifth environment temperature threshold; whether the eye temperature is less than or equal to a first eye temperature threshold; whether the nose temperature is less than or equal to a sixth nose temperature threshold; whether the indoor environment temperature is less than or equal to a sixth environment temperature threshold; whether the cheek temperature is less than or equal to a fourth cheek temperature threshold; whether the nose temperature is less than or equal to a seventh nose temperature threshold; whether the indoor environment temperature is less than or equal to a seventh environment temperature threshold; whether the eye temperature is less than or equal to a second eye temperature threshold; whether the indoor environment temperature is less than or equal to an eighth environment temperature threshold.

[0293] Wherein the fifth nose temperature threshold is greater than the third nose temperature threshold and less than the second nose temperature threshold, the sixth nose temperature threshold is greater than the fourth nose temperature threshold and less than the third nose temperature threshold, and the seventh nose temperature threshold is greater than the second nose temperature threshold and less than the first nose temperature threshold; the fifth environment temperature threshold is less than the sixth environment temperature threshold and greater than the first environment temperature threshold, the sixth environment temperature threshold is less than the fourth environment temperature threshold, the seventh environment temperature threshold is greater than the third environment temperature threshold, and the eighth environment temperature threshold is greater than the seventh environment temperature threshold; the first eye temperature threshold is less than the second eye temperature threshold; and the fourth cheek temperature threshold is less than the third cheek temperature threshold and greater than the second cheek temperature threshold.

[0294] In some embodiments, the parameter control method of the air conditioner further comprises: if the first cheek temperature is less than or equal to the second cheek temperature threshold, determining whether the first indoor environment temperature is less than or equal to the first environment temperature threshold by the temperature sensing recognition model; if the first indoor environment temperature is greater than the first environment temperature threshold, determining whether the first nose temperature is less than or equal to the fourth nose temperature threshold by the temperature sensing recognition model; in the case that the first nose temperature is less than or equal to the fourth nose temperature threshold, determining that the target user's corresponding temperature sensing result is the third temperature sensing by the temperature sensing recognition model; if the first nose temperature is greater than the fourth nose temperature threshold, determining whether the first indoor environment temperature is less than or equal to the fifth environment temperature threshold by the temperature recognition model; in the case that the first indoor environment temperature is less than or equal to the fifth environment temperature threshold, determining that the target user's corresponding temperature sensing result is the first temperature sensing by the temperature sensing recognition model; in the case that the first indoor environment temperature is greater than the fifth environment temperature threshold, determining that the target user's corresponding temperature sensing result is the second temperature sensing by the temperature sensing recognition model.

[0295] In some embodiments, the parameter control method of the air conditioner further comprises: if the first nose temperature is less than or equal to the second nose temperature threshold, determining whether the first indoor environment temperature is less than or equal to the fourth environment temperature threshold by the temperature sensing recognition model; in the case that the first indoor environment temperature is greater than the fourth environment temperature threshold, determining that the target user's corresponding temperature sensing result is the third temperature sensing; if the first indoor environment temperature is less than or equal to the fourth environment temperature threshold, determining whether the first indoor environment temperature is less than or equal to the sixth environment temperature threshold by the temperature sensing recognition model; in the case that the first indoor environment temperature is less than or equal to the sixth environment temperature threshold, determining that the target user's corresponding temperature sensing result is the third temperature sensing; in the case that the first indoor environment temperature is greater than the sixth environment temperature threshold, determining that the target user's corresponding temperature sensing result is the first temperature sensing.

[0296] Optionally, the temperature sensing recognition model comprises five layers of decision conditions, and there are 25 decision branches in total; each decision branch corresponds to a leaf node which is a temperature sensing result.

[0297] In some embodiments, step 1610 further comprises: acquiring the first facial region temperature of the target user collected by the infrared sensor in the current detection period, and acquiring the first indoor environment temperature collected by the temperature sensor in the current detection period.

[0298] Optionally, step 1620 further comprises: inputting the first facial region temperature and the first indoor environment temperature into the temperature sensing recognition model, and determining the first temperature sensing result of the target user corresponding to the current detection period by the temperature sensing recognition model according to the first facial region temperature and the first indoor environment temperature; and determining the temperature sensing result of the target user according to the first temperature sensing results of the target user corresponding to at least two detection periods respectively.

[0299] In some specific embodiments, Figure 17 As shown, in the stable comfort stage of the temperature sensation of each user in the indoor environment, the air conditioner obtains the first facial area temperature corresponding to the target user collected by the infrared sensor, and obtains the first indoor environment temperature collected by the temperature sensor; the first facial area temperature and the first indoor environment temperature are input into the temperature sensation recognition model, and the temperature sensation recognition model determines the temperature sensation result corresponding to the target user according to the first facial area temperature and the first indoor environment temperature; when it is determined that the temperature sensation result of the user is neutral, the current set temperature Tset is kept unchanged; if it is determined that the temperature sensation result of the user is cold, the current set temperature needs to be increased; if it is determined that the temperature sensation result of the user is hot, the current set temperature needs to be lowered.

[0300] The air conditioner adjusts the current set temperature stored in the controller based on the user's temperature sensing result. If the user's temperature sensing result indicates a cooler temperature, the current set temperature is increased by 1°C. If the user's temperature sensing result indicates a warmer temperature, the current set temperature is decreased by 1°C, resulting in the target temperature being changed.

[0301] The air conditioner determines whether Tset+3 < target temperature < Tset-3. If not, the target temperature is not automatically determined by the air conditioner based on the temperature sensing model, but is a temperature customized by the user via the remote control. In this case, the target temperature is set to the maximum value of Tset±3. If so, the target temperature is set to the target temperature after the modification.

[0302] The air conditioner also determines the relative humidity Rhset according to the target temperature through the temperature and humidity comparison table (Table 1), so that the air conditioner determines the target operating parameters of the air conditioner (for example, adjust the speed of the indoor fan, such as Figure 8 shown).

[0303] In an embodiment of the present application, the air conditioner obtains the user's facial area temperature and the indoor environment temperature, and makes a preliminary judgment based on the first-level decision condition of the temperature perception recognition model (whether the cheek temperature is less than or equal to the first cheek temperature threshold). Then, combined with the different facial area temperatures of the user, starting from the cheek temperature that accounts for the largest proportion of the face, and then combined with the further cheek temperature and nose temperature, the first-level recognition result is further adjusted, which can more accurately quantify the user's individual temperature perception and form a temperature perception decision branch, so that the air conditioner controller can accurately identify and predict the temperature perception results of each user in the indoor environment; and, the controller adjusts the operating parameters of the air conditioner according to the accurate temperature perception result corresponding to at least one user, so that the indoor environment temperature can more accurately meet the temperature requirements of at least one user in the indoor environment, so that the air conditioner can meet the comfort needs of the general population and realize the personalized comfort needs of each user.

[0304] As Figure 18 shown in the drawings, in one embodiment, a parameter control device 1800 of an air conditioner is provided, which can be applied to the air conditioner described above. The parameter control device 1800 of the air conditioner can include a temperature acquisition module 1810, a temperature-sensing identification module 1820, and a parameter adjustment module 1830.

[0305] The temperature acquisition module 1810 is configured to acquire a first facial region temperature corresponding to a target user collected by an infrared sensor and acquire a first indoor environment temperature collected by a temperature sensor; the target user is any user in an indoor environment where the air conditioner is located.

[0306] The temperature-sensing identification module 1820 is configured to input the first facial region temperature and the first indoor environment temperature into a temperature-sensing identification model, and determine a temperature-sensing result corresponding to the target user according to the first facial region temperature and the first indoor environment temperature through the temperature-sensing identification model; a first layer decision condition of the temperature-sensing identification model is whether a cheek temperature is less than or equal to a first cheek temperature threshold value, a second layer decision condition of the temperature-sensing identification model includes whether the cheek temperature is less than or equal to a second cheek temperature threshold value and whether a nose temperature is less than or equal to a first nose temperature threshold value, and the second cheek temperature threshold value is less than the first cheek temperature threshold value; the temperature-sensing result includes a temperature-sensing category, and the temperature-sensing category includes a first temperature-sensing, a second temperature-sensing, or a third temperature-sensing, the first temperature-sensing indicates that a temperature feeling of the user is cold, the second temperature-sensing indicates that the temperature feeling of the user is hot, and the third temperature-sensing indicates that the temperature feeling of the user is neutral.

[0307] The parameter adjustment module 1830 is configured to determine a target operating parameter corresponding to the air conditioner according to a working mode of the air conditioner and a temperature-sensing result corresponding to at least one user in the indoor environment.

[0308] In the embodiments of the present application, the air conditioner acquires the facial region temperature of the user and the indoor environment temperature, preliminarily judges through the first layer decision condition (whether the cheek temperature is less than or equal to the first cheek temperature threshold value) of the temperature-sensing identification model, then combines the different facial region temperatures of the user, starts from the cheek temperature with the largest facial proportion, and further adjusts the identification result of the first layer by combining the further cheek temperature and the nose temperature, so as to more accurately quantify the temperature feeling of the individual user, form a temperature-sensing decision branch, and thus enable the controller of the air conditioner to accurately identify and predict the temperature-sensing result of each user in the indoor environment; and the controller adjusts the operating parameter of the air conditioner according to the accurate temperature-sensing result corresponding to at least one user, so that the indoor environment temperature can more accurately meet the temperature demand of at least one user in the indoor environment, so that the air conditioner can meet the comfort demand of the general public and also realize the individual comfort demand of each user.

[0309] The embodiment of the present application discloses a computer readable storage medium which stores a computer program, wherein the computer program is executed by a processor to realize the method described in the above embodiments.

[0310] The embodiment of the present application discloses a computer program product comprising a computer program, and the computer program can be executed by a processor to realize the method described in the above embodiments.

[0311] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily mean the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0312] In various embodiments of the present application, it should be understood that the size of the sequence number of the above processes does not mean the inevitable sequence of execution, and the execution sequence of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0313] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0314] The above has carried out the detailed introduction to the air conditioner and the parameter control method of the air conditioner disclosed by the embodiments of the present application, the principle and implementation mode of the present application have been described in this paper by applying specific examples, the above embodiment explanation is only for helping to understand the method and core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In conclusion, the content of the specification should not be understood as the limitation of the present application.

Claims

1. An air conditioner, characterized in that: The air conditioner comprises: a refrigerant circulation circuit, comprising a compressor, an outdoor heat exchanger, and an indoor heat exchanger connected in sequence, wherein the refrigerant circulation circuit is configured to circulate the refrigerant; a temperature sensor configured to collect an indoor ambient temperature corresponding to the indoor environment in which the air conditioner is located; An infrared sensor is configured to collect a facial area temperature corresponding to at least one user in the indoor environment; the facial area temperature includes a cheek temperature and a nose temperature; The controller is configured as: Acquiring a first facial area temperature corresponding to a target user collected by the infrared sensor, and acquiring a first indoor environment temperature collected by the temperature sensor; the target user is any user in the indoor environment; The first facial area temperature and the first indoor environment temperature are input into a temperature perception recognition model, and the temperature perception recognition model determines a temperature perception result corresponding to the target user based on the first facial area temperature and the first indoor environment temperature; the first-level decision condition of the temperature perception recognition model is whether the cheek temperature is less than or equal to a first cheek temperature threshold, and the second-level decision condition of the temperature perception recognition model includes whether the cheek temperature is less than or equal to a second cheek temperature threshold and whether the nose temperature is less than or equal to a first nose temperature threshold, and the second cheek temperature threshold is less than the first cheek temperature threshold; the temperature perception result includes a temperature perception category, and the temperature perception category includes a first temperature perception, a second temperature perception, or a third temperature perception, the first temperature perception indicates that the user's temperature perception is cold, the second temperature perception indicates that the user's temperature perception is hot, and the third temperature perception indicates that the user's temperature perception is neutral; The target operating parameters corresponding to the air conditioner are determined according to the operating mode of the air conditioner and the temperature sensing result corresponding to the at least one user.

2. The air conditioner according to claim 1, characterized in that Determining a temperature sensing result corresponding to the target user according to the first facial area temperature and the first indoor ambient temperature by using the temperature sensing recognition model includes: determining, by the temperature recognition model, whether the first cheek temperature in the first facial region temperature is less than or equal to the first cheek temperature threshold; If the first cheek temperature is less than or equal to the first cheek temperature threshold, determining whether the first cheek temperature is less than or equal to the second cheek temperature threshold by using the temperature recognition model; When the first cheek temperature is greater than the second cheek temperature threshold, determining, by the temperature perception recognition model, that the temperature perception result corresponding to the target user is the first temperature perception or the third temperature perception; If the first cheek temperature is greater than the first cheek temperature threshold, determining, by the temperature recognition model, whether the first nose temperature in the first facial region temperature is less than or equal to the first nose temperature threshold; When the first nose temperature is greater than the first nose temperature threshold, the temperature sensation recognition model is used to determine that the temperature sensation result corresponding to the target user is the second temperature sensation or the third temperature sensation.

3. The air conditioner according to claim 2, characterized in that The third-level decision condition of the temperature sensing recognition model includes whether the indoor ambient temperature is less than or equal to a first ambient temperature threshold, whether the nose temperature is less than or equal to a second nose temperature threshold, whether the indoor ambient temperature is less than or equal to the second ambient temperature threshold, and whether the indoor ambient temperature is less than or equal to a third ambient temperature threshold; the second nose temperature threshold is less than the first nose temperature threshold, the first ambient temperature threshold is less than the third ambient temperature threshold, and the second ambient temperature threshold is less than the first ambient temperature threshold; In determining whether the first nose temperature in the first facial region temperature is less than or equal to the first nose temperature threshold by using the temperature recognition model, the controller is further configured to: If the first nose temperature is less than or equal to the first nose temperature threshold, determining whether the first nose temperature is less than or equal to the second nose temperature threshold by using the temperature perception recognition model; When the first nose temperature is less than or equal to the second nose temperature threshold, determining, by the temperature sensation recognition model, a temperature sensation result corresponding to the target user as the first temperature sensation or the third temperature sensation; When the first cheek temperature is greater than the second nose temperature threshold, the temperature sensation recognition model is used to determine that the temperature sensation result corresponding to the target user is the second temperature sensation or the third temperature sensation.

4. The air conditioner according to claim 3, characterized in that The facial area temperature includes the forehead temperature; the fourth-level decision conditions of the temperature recognition model include whether the nose temperature is less than or equal to the third nose temperature threshold, whether the nose temperature is less than or equal to the fourth nose temperature threshold, whether the forehead temperature is less than or equal to the first forehead temperature threshold, whether the indoor ambient temperature is less than or equal to the fourth ambient temperature threshold, whether the forehead temperature is less than or equal to the second forehead temperature threshold, whether the cheek temperature is less than or equal to the third cheek temperature threshold, and whether the forehead temperature is less than or equal to the third forehead temperature threshold; Among them, the third nose temperature threshold is less than the second nose temperature threshold, and the fourth nose temperature threshold is less than the third nose temperature threshold; the first forehead temperature threshold is less than the second forehead temperature threshold, and the second forehead temperature threshold is less than the third forehead temperature threshold; the fourth ambient temperature threshold is less than the third ambient temperature threshold and greater than the first ambient temperature threshold; the third cheek temperature threshold is greater than the first cheek temperature threshold.

5. The air conditioner according to claim 4, characterized in that The facial area temperature includes the eye temperature; the fifth layer decision conditions of the temperature recognition model include: Whether the nose temperature is less than or equal to the fifth nose temperature threshold; Whether the indoor ambient temperature is less than or equal to the fifth ambient temperature threshold; whether the eye temperature is less than or equal to a first eye temperature threshold; whether the nose temperature is less than or equal to a sixth nose temperature threshold; Whether the indoor ambient temperature is less than or equal to a sixth ambient temperature threshold; Whether the cheek temperature is less than or equal to the fourth cheek temperature threshold; Whether the nose temperature is less than or equal to the seventh nose temperature threshold; Whether the indoor ambient temperature is less than or equal to the seventh ambient temperature threshold; whether the eye temperature is less than or equal to a second eye temperature threshold; Whether the indoor ambient temperature is less than or equal to the eighth ambient temperature threshold; Among them, the fifth nose temperature threshold is greater than the third nose temperature threshold and less than the second nose temperature threshold, the sixth nose temperature threshold is greater than the fourth nose temperature threshold and less than the third nose temperature threshold, and the seventh nose temperature threshold is greater than the second nose temperature threshold and less than the first nose temperature threshold; the fifth ambient temperature threshold is less than the sixth ambient temperature threshold and greater than the first ambient temperature threshold, the sixth ambient temperature threshold is less than the fourth ambient temperature threshold, the seventh ambient temperature threshold is greater than the third ambient temperature threshold, and the eighth ambient temperature threshold is greater than the seventh ambient temperature threshold; the first eye temperature threshold is less than the second eye temperature threshold; and the fourth cheek temperature threshold is less than the third cheek temperature threshold and greater than the second cheek temperature threshold.

6. The air conditioner according to claim 5, characterized in that After determining whether the first cheek temperature is less than or equal to the second cheek temperature threshold using the temperature recognition model, the controller is further configured to: If the first cheek temperature is less than or equal to the second cheek temperature threshold, determining whether the first indoor ambient temperature is less than or equal to the first ambient temperature threshold by using the temperature perception recognition model; If the first indoor ambient temperature is greater than the first ambient temperature threshold, determining whether the first nose temperature is less than or equal to the fourth nose temperature threshold by using the temperature perception recognition model; When the first nose temperature is less than or equal to the fourth nose temperature threshold, determining, by the temperature sensation recognition model, a temperature sensation result corresponding to the target user as the third temperature sensation; If the first nose temperature is greater than the fourth nose temperature threshold, determining whether the first indoor ambient temperature is less than or equal to the fifth ambient temperature threshold through a temperature recognition model; When the first indoor ambient temperature is less than or equal to the fifth ambient temperature threshold, determining, by the temperature perception recognition model, a temperature perception result corresponding to the target user as the first temperature perception; When the first indoor ambient temperature is greater than the fifth ambient temperature threshold, the temperature sensing result corresponding to the target user is determined to be the second temperature sensing result through the temperature sensing recognition model.

7. The air conditioner according to claim 5, characterized in that When the first nose temperature is less than or equal to the second nose temperature threshold, determining, by the temperature perception recognition model, that the temperature perception result corresponding to the target user is the first temperature perception or the third temperature perception, includes: If the first nose temperature is less than or equal to the second nose temperature threshold, determining whether the first indoor ambient temperature is less than or equal to the fourth ambient temperature threshold by using the temperature sensing recognition model; When the first indoor ambient temperature is greater than the fourth ambient temperature threshold, determining that the temperature sensing result corresponding to the target user is the third temperature sensing result; If the first indoor ambient temperature is less than or equal to the fourth ambient temperature threshold, determining whether the first indoor ambient temperature is less than or equal to the sixth ambient temperature threshold by using the temperature sensing recognition model; When the first indoor ambient temperature is less than or equal to the sixth ambient temperature threshold, determining that the temperature sensing result corresponding to the target user is the third temperature sensing result; When the first indoor ambient temperature is greater than the sixth ambient temperature threshold, it is determined that the temperature sensing result corresponding to the target user is the first temperature sensing result.

8. The air conditioner according to any one of claims 1 to 7, characterized in that: The temperature sensing recognition model includes five layers of decision conditions and a total of 25 decision branches; the leaf node corresponding to each decision branch is the temperature sensing result.

9. The air conditioner according to claim 1, wherein: The step of obtaining the first facial area temperature corresponding to the target user collected by the infrared sensor and obtaining the first indoor environment temperature collected by the temperature sensor includes: Acquire a first facial area temperature corresponding to the target user collected by the infrared sensor in a current detection period, and acquire a first indoor ambient temperature collected by the temperature sensor in the current detection period; Inputting the first facial region temperature and the first indoor environment temperature into a temperature sensing recognition model, and determining a temperature sensing result corresponding to the target user based on the first facial region temperature and the first indoor environment temperature through the temperature sensing recognition model, includes: inputting the first facial region temperature and the first indoor ambient temperature into a temperature sensing recognition model, and determining, by the temperature sensing recognition model, a first temperature sensing result of the target user corresponding to the current detection period based on the first facial region temperature and the first indoor ambient temperature; The temperature sensing result corresponding to the target user is determined according to the first temperature sensing results corresponding to the target user and at least two detection cycles.

10. A parameter control method for an air conditioner, characterized in that: Applied to an air conditioner, the method comprises: Acquiring a first facial area temperature corresponding to a target user collected by an infrared sensor, and acquiring a first indoor environment temperature collected by a temperature sensor; the target user is any user in the indoor environment where the air conditioner is located; The first facial area temperature and the first indoor environment temperature are input into a temperature perception recognition model, and the temperature perception recognition model determines a temperature perception result corresponding to the target user based on the first facial area temperature and the first indoor environment temperature; the first-level decision condition of the temperature perception recognition model is whether the cheek temperature is less than or equal to a first cheek temperature threshold, and the second-level decision condition of the temperature perception recognition model includes whether the cheek temperature is less than or equal to a second cheek temperature threshold and whether the nose temperature is less than or equal to a first nose temperature threshold, and the second cheek temperature threshold is less than the first cheek temperature threshold; the temperature perception result includes a temperature perception category, and the temperature perception category includes a first temperature perception, a second temperature perception, or a third temperature perception, the first temperature perception indicates that the user's temperature perception is cold, the second temperature perception indicates that the user's temperature perception is hot, and the third temperature perception indicates that the user's temperature perception is neutral; The target operating parameters corresponding to the air conditioner are determined according to the operating mode of the air conditioner and the temperature sensing results corresponding to at least one user in the indoor environment.

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