Air conditioning device

Abstract

The invention provides an air conditioning device which comprises a sensing module which is installed on a ceiling and provides a controlled view field pointing downwards to the ground, the sensing module comprises an infrared temperature sensor and a radar sensor, the infrared temperature sensor is a thermopile sensor, and the thermopile sensor is used for detecting the ground temperature; the radar sensor is configured to detect a distance of a person in the controlled field of view relative to a center of the controlled field of view; the device further comprises a presumption part. The estimation unit is configured to estimate a position of the person in the controlled field of view based on a distance of the person in the controlled field of view with respect to a center of the controlled field of view and an installation height of the thermopile sensor, and to calculate a human body temperature contribution rate of the person in the controlled field of view based on the estimated position of the person in the controlled field of view, and correcting the ground temperature detected by the thermopile sensor based on the human body temperature contribution rate to obtain the corrected ground temperature. According to the invention, the accuracy of the remotely detected ground temperature can be ensured, and a stable data basis is provided for intelligent control.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioning device. Background Art

[0002] The ground temperature has an important impact on indoor comfort. By measuring the ground temperature, we can understand the indoor thermal environment and provide a reference for indoor environmental adjustment and improvement. By combining the ground temperature measurement results with the air conditioning return air temperature, we can predict the user's perceived temperature, so as to take corresponding adjustment measures to improve indoor comfort. Abnormal ground temperature is also one of the indicators of heating or cooling system failure. By measuring the ground temperature, system failures can be detected and diagnosed in time for repair and maintenance.

[0003] In the prior art, infrared temperature sensors are used to sense the temperature in a space to improve user comfort in an air-conditioned room. For example, the solution disclosed in the Chinese patent application (CN116382112A) is: "Based on the readings of an air temperature sensor and at least one infrared temperature sensor, a method and a sensing unit mounted on the ceiling estimate the temperature at the height of an occupant in the room. The sensing unit mounted on the ceiling is installed near the center of the room. The infrared temperature sensor provides a controlled field of view pointing downward to the floor, tracks the air temperature, and estimates the room temperature at the height of the occupant through a model of the temperature detected by the infrared temperature sensor based on radiant energy."

[0004] The technical solution disclosed in the comparative document estimates the room temperature at the user's height based on an infrared temperature sensor. The prior art does not independently detect the ground temperature, and there will be an obvious deviation between the room temperature at the occupant's height detected by the infrared temperature sensor and the ground temperature. Summary of the invention

[0005] Aiming at the problem that the prior art does not independently detect the ground temperature, and there is an obvious deviation between the room temperature at the occupant's height detected by the infrared temperature sensor and the ground temperature, the present invention designs and provides an air conditioning device.

[0006] The air conditioning device includes a sensing module, which is mounted on the ceiling and provides a controlled field of view directed downward to the ground, the sensing module includes at least one infrared temperature sensor, the infrared temperature sensor is a thermopile sensor, and the thermopile sensor is used to detect the ground temperature. The sensing module also includes a radar sensor, and the radar sensor is configured to detect the distance of a person in the controlled field of view relative to the center of the controlled field of view.

[0007] In one or more embodiments of the present application, the air conditioning device also includes an estimating unit; the estimating unit is configured to estimate the position of a person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor, and calculate the body temperature contribution rate of the human body in the controlled field of view based on the estimated position of the person in the controlled field of view, and correct the ground temperature detected by the thermopile sensor based on the body temperature contribution rate to obtain the corrected ground temperature.

[0008] In one or more embodiments of the present application, the estimating unit is configured to obtain a normalized Gaussian distribution relationship between the controlled field of view angle and the detected temperature, estimate the relative angle between the person in the controlled field of view and the thermopile sensor based on the distance of the person in the controlled field of view detected by the radar sensor relative to the center of the controlled field of view and the installation height of the thermopile sensor, and calculate the body temperature contribution rate of the person in the controlled field of view based on the relative angle and the normalized Gaussian distribution relationship.

[0009] In one or more embodiments of the present application, the estimating unit is further configured to calculate the human body temperature contribution value based on the product of the human body temperature contribution rate and the human body temperature contribution threshold, and the corrected ground temperature is the difference between the ground temperature detected by the thermopile sensor and the human body temperature contribution value.

[0010] In one or more embodiments of the present application, the human body temperature contribution threshold is obtained by the following method: setting a first set ambient temperature for obtaining the human body temperature contribution threshold, and when the ground temperature detected by the thermopile sensor is the same as the first set ambient temperature, taking the ground temperature detected by the thermopile sensor as the unmanned ground temperature; reading the ground temperature detected by the thermopile sensor as the manned ground temperature when the human object is located in the center of the controlled field of view; calculating the temperature difference between the unmanned ground temperature and the manned ground temperature, and recording it as the single-person maximum temperature measurement interference value; testing the single-person maximum temperature measurement interference value when multiple human objects are located in the center of the controlled field of view, and calculating the average to obtain the human body temperature contribution threshold at the current first set ambient temperature; setting multiple first set ambient temperatures and obtaining multiple human body temperature contribution thresholds corresponding to the multiple first set ambient temperatures; establishing a linear fitting model of the first set ambient temperature and the human body temperature contribution threshold and obtaining the linear coefficient; substituting the linear coefficient into the linear fitting model to obtain a linear function of the indoor ambient temperature and the human body temperature contribution threshold; and obtaining the human body temperature contribution threshold corresponding to the real-time indoor ambient temperature based on the linear function.

[0011] A second aspect of the present application provides an air-conditioning device. Based on the sensor module, the air-conditioning device also includes a correction unit and an estimation unit. The correction unit is configured to correct the ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor, and the ambient temperature correction model calculation system; the estimation unit is configured to estimate the position of the person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor, and calculate the human body temperature contribution rate of the human body in the controlled field of view based on the estimated position of the person in the controlled field of view, and correct the ground temperature based on the human body temperature contribution rate correction system to obtain the corrected ground temperature.

[0012] In one or more embodiments of the present application, the air-conditioning device also includes a generating unit, which is configured to use a thermopile sensor to detect a blackbody radiation source with different set radiation temperatures at a second set ambient temperature to obtain a set of test temperatures, establish a first fitting model of the set radiation temperature and the test temperature and obtain first fitting parameters of the first fitting model; obtain corresponding first fitting parameters at different second set ambient temperatures, establish a second fitting model of the second set ambient temperature and the first fitting parameters and obtain second fitting parameters of the second fitting model; and establish a test temperature model based on the second fitting model and the measured installation distance offset.

[0013] The third aspect of the present application provides an air-conditioning device. Based on the sensor module, an estimating unit in the air-conditioning device estimates the position of each person in the controlled field of view based on the center distance of each person in the controlled field of view relative to the controlled field of view and the installation height of the thermopile sensor, and calculates the body temperature contribution rate of each person in the controlled field of view based on the estimated position of each person in the controlled field of view, and corrects the ground temperature detected by the thermopile sensor based on the body temperature contribution rate of all people to obtain the corrected ground temperature.

[0014] In one or more embodiments of the present application, the estimating unit is configured to obtain a normalized Gaussian distribution relationship between the field of view angle and the detected temperature of the thermopile sensor, estimate the relative angle between each person in the controlled field of view and the thermopile sensor based on the distance of each person in the controlled field of view detected by the radar sensor relative to the center of the controlled field of view and the installation height of the thermopile sensor, and calculate the body temperature contribution rate of each person in the controlled field of view based on the relative angle between each person and the thermopile sensor and the normalized Gaussian distribution relationship.

[0015] In one or more embodiments of the present application, the estimation unit is further configured to calculate the human body temperature contribution value of each person based on the product of the human body temperature contribution rate and the human body temperature contribution threshold of each person, and calculate the sum of the human body temperature contribution values ​​of all people. The corrected ground temperature is the difference between the ground temperature detected by the thermopile sensor and the sum of the human body temperature contribution values.

[0016] The fourth aspect of the present application provides an air-conditioning device. Based on the sensor module, the air-conditioning device also includes a correction unit and an estimation unit. The correction unit is configured to correct the ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor, and the ambient temperature correction model calculation system; the estimation unit estimates the position of each person in the controlled field of view based on the center distance of each person in the controlled field of view relative to the controlled field of view and the installation height of the thermopile sensor, and calculates the human body temperature contribution rate of each person in the controlled field of view based on the estimated position of each person in the controlled field of view. The correction system corrects the ground temperature based on the human body temperature contribution rate of all people to obtain the corrected ground temperature.

[0017] This application can ensure the accuracy of ground temperature detected at a distance and provide a stable data basis for intelligent control.

[0018] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the structure of an air conditioning device provided by one or more embodiments of the present application;

[0021] Figure 2 A schematic diagram of the structure of an air conditioning device provided by one or more embodiments of the present application;

[0022] Figure 3 A schematic diagram of a controlled field of view in an air conditioning device provided by one or more embodiments of the present application;

[0023] Figure 4 A schematic block diagram of the structure of an air conditioning device provided in one or more embodiments of the present application;

[0024] Figure 5 A temperature measurement curve of a thermopile sensor in an air conditioning device provided by one or more embodiments of the present application;

[0025] Figure 6 A schematic diagram of a controlled field of view in an air conditioning device provided by one or more embodiments of the present application;

[0026] Figure 7A schematic diagram of an estimating unit in an air conditioning device according to one or more embodiments of the present application estimating a position of a person in a controlled field of view;

[0027] Figure 8 A flow chart of an air conditioning device provided for one or more embodiments of the present application;

[0028] Fig. 9 A flow chart of an air conditioning device provided for one or more embodiments of the present application;

[0029] Fig.10 A schematic diagram of the structure of an air conditioning device provided by one or more embodiments of the present application;

[0030] Fig.11 A flow chart of an air conditioning device provided for one or more embodiments of the present application;

[0031] Fig.12 A schematic diagram of the structure of an air conditioning device provided by one or more embodiments of the present application;

[0032] Fig.13 A flow chart of an air conditioning device provided for one or more embodiments of the present application;

[0033] Fig.14 A flow chart of an air conditioning device provided for one or more embodiments of the present application;

[0034] Fig.15 A flow chart of an air conditioning device provided for one or more embodiments of the present application;

[0035] In the figure: 100, air conditioning device; 10, outdoor unit; 11, indoor unit; 11a, indoor unit; 11b, indoor unit; 101, compressor; 102, outdoor heat exchanger; 103, outdoor throttling element; 104a, indoor throttling element; 104b, indoor throttling element; 105, indoor heat exchanger; 105a, indoor heat exchanger; 105b, indoor heat exchanger; 106, outdoor fan; 107, indoor fan; 107a, indoor fan; 10 7b, indoor fan; 108, gas-liquid separator; 109, gas-side shut-off valve; 110, liquid-side shut-off valve; 111, indoor controller; 111a, indoor controller; 111b, indoor controller; 112, liquid-side connecting pipe; 113, gas-side connecting pipe; 114, switching valve; 115, sensor module; 116, controlled field of view; 117, estimation unit; 118, control unit; 119, calibration unit; 120, generation unit; 121, thermopile sensor. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0048] Embodiments of the air conditioning device provided in the present application will be described with reference to the accompanying drawings.

[0049] The air conditioning device 100 is installed in buildings such as apartments, hotels, office buildings, and houses. The air conditioning device 100 can independently perform cooling operation or independently perform heating operation.

[0050] like Figure 1 As shown, the air conditioning device 100 includes an outdoor unit 10, and a liquid-side communication pipe 112 and a gas-side communication pipe 113 connecting the outdoor unit 10 and the indoor unit 11 to form a vapor compression refrigeration cycle. Figure 1 As shown, the refrigeration cycle is mainly realized by a refrigerant circuit, in which components such as a compressor 101, a condenser, a throttling element and an evaporator are used. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0051] From a principle perspective, low-temperature, low-pressure refrigerant enters the compressor 101, which compresses it into high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0052] The throttling element expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 101. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioning device 100 can adjust the temperature of the indoor space.

[0053] The outdoor unit 10 is introduced below. The outdoor unit 10 is installed in an outdoor natural environment and is a refrigeration cycle including a compressor 101, a switching valve 114 (usually a four-way valve), an outdoor heat exchanger 102, an outdoor throttling element 103 (usually an electronic expansion valve), a liquid-side shutoff valve 110, and a gas-side shutoff valve 109. The outdoor unit 10 can perform heating operation or cooling operation on the outdoor side to provide the indoor unit 11 with energy for increasing the indoor temperature or reducing the indoor temperature.

[0054] The compressor 101 is used to suck in and compress a low-pressure gas refrigerant into a high-pressure gas refrigerant, and then discharge it. The compressor 101 may be a reciprocating compressor, a screw compressor, a centrifugal compressor, etc. The compressor 101 is driven by a motor, and the speed of the motor may be variably controlled by a frequency converter. The number of compressors 101 may be one or more.

[0055] The switching valve 114 is used to switch the flow direction of the refrigerant between the cooling mode and the heating mode.

[0056] The outdoor heat exchanger 102 is configured to be used as a condenser in cooling operation and as an evaporator in heating operation. The outdoor heat exchanger 102 can perform heat exchange with the air guided by the outdoor fan 106 so that the refrigerant flowing in the outdoor heat exchanger 102 undergoes a phase change (condensation or evaporation). The outdoor fan 106 is driven by a motor, and the speed of the motor can be controlled to change the flow rate of the air heat exchanged with the outdoor heat exchanger 102 by adjusting the speed. The outdoor fan 106 can be an axial flow fan, a cross flow fan or other optional fan types. The outdoor fan 106 is arranged near the outdoor heat exchanger 102.

[0057] The outdoor throttling element 103 (electronic expansion valve) is used to reduce the pressure of the high-pressure refrigerant in the cooling mode and the heating mode.

[0058] The liquid-side shutoff valve 110 and the gas-side shutoff valve 109 are located at the interface connecting the external equipment and the pipeline.

[0059] The outdoor unit 10 is also provided with a gas-liquid separator 108 (liquid storage device). The gas-liquid separator 108 is provided on the suction side of the compressor 101 and is a shell-shaped component for separating and storing the refrigerant into gas and liquid. The gas-liquid separator 108 can store excess refrigerant.

[0060] In the heating mode, a refrigerant circuit for heating operation can be formed in the outdoor unit 10, which is referred to as a heating cycle. The outdoor throttling element 103, the outdoor heat exchanger 102, the switching valve 114 (one path in the four-way valve), the gas-liquid separator 108, the compressor 101 and the switching valve 114 (the other path in the four-way valve) are connected in sequence from the liquid-side connecting pipe 112 to the gas-side connecting pipe 113.

[0061] In the cooling mode, a refrigerant circuit for cooling operation can be formed in the outdoor unit 10, which is referred to as a refrigeration cycle. The direction from the gas-side connecting pipe 113 to the liquid-side connecting pipe 112 is connected in sequence with a switching valve 114 (one path in the four-way valve), a gas-liquid separator 108, a compressor 101, a switching valve 114 (another path in the four-way valve), an outdoor heat exchanger 102 and an outdoor throttling element 103.

[0062] The entire outdoor unit 10 is controlled by an outdoor controller, which is arranged in an electrical box with good sealing performance and heat dissipation function. The outdoor controller includes components such as a processor, a storage unit, an input / output interface, and a communication interface. The processor can be a dedicated processor, a central processing unit (CPU), etc. The processor can access the storage unit to execute instructions or applications stored in the storage unit to realize related functions. The storage unit can include a volatile memory and / or a non-volatile memory. The input / output interface can be connected to various sensors arranged in the outdoor unit 10 to receive the detection values ​​of various sensors arranged in the outdoor unit 10. The input / output interface can also be connected to devices such as a frequency converter, a compressor 101, an outdoor fan 106, a switching valve 114, and an outdoor throttling element 103 to output control instructions generated by the processor to them. The communication interface can support different wireless communication protocols, such as Wi-Fi, Bluetooth, near-field communication, NB-IoT, etc., to communicate with other electronic devices, including but not limited to cloud servers, computers (host computers), smart phones, tablets, PDAs, smart control tools, wearable devices and vehicle-mounted equipment, etc.

[0063] The indoor unit 11 is described below. The indoor unit 11 performs a cooling operation or a heating operation using the energy generated by the outdoor unit 10 to increase the indoor temperature or the energy to decrease the indoor temperature.

[0064] In one or more embodiments of the present application, the indoor unit 11 includes at least one ceiling-mounted indoor unit. The ceiling-mounted indoor unit is a device installed on the ceiling of a room, which can save indoor space and make the indoor space neater and more beautiful.

[0065] In one or more embodiments of the present application, the ceiling-mounted indoor unit includes a substantially rectangular housing (not shown). The housing is composed of a main body and a panel, the main body is embedded in the ceiling, and the panel covers the main body and forms an air supply port and an air return port.

[0066] In one or more embodiments of the present application, the return air vent is located approximately in the center of the panel, and the return air vent is provided with a grille and a filter to prevent foreign matter from entering, effectively block dust, fibers and other tiny impurities, avoid affecting air circulation and normal operation of the equipment, and protect internal mechanical equipment from external collision or damage. The air supply vents are arranged around the return air vent located in the center, aiming to achieve uniform air supply from multiple directions to ensure that the indoor air temperature is more uniform and comfortable. Through the multi-directional air supply design, indoor air can be more evenly delivered to the air-conditioned room to avoid dead corners or uneven air supply. In one or more embodiments of the present application, four air supply vents are provided to supply air to four directions of the air-conditioned room respectively. An air guide assembly is provided at the air supply vent, and the air guide assembly can rotate under the drive of a motor to change the angle of air supply.

[0067] In one or more embodiments of the present application, an indoor fan 107 and an indoor heat exchanger 105 are disposed in the main body.

[0068] The indoor fan 107 is used to guide the air in the air-conditioned room from the return air outlet into the main body, and after heat exchange with the indoor heat exchanger 105 in the main body, the air is sent into the air-conditioned room through the air supply outlet.

[0069] The indoor heat exchanger 105 is used as a condenser in heating operation and as an evaporator in cooling operation. The refrigerant in the indoor heat exchanger 105 exchanges heat with the air guided by the indoor fan 107, so that the refrigerant therein undergoes a phase change (condensation or evaporation).

[0070] An indoor controller 111 is provided in the indoor unit 11. The indoor controller 111 includes components such as a processor, a storage unit, an input / output interface, and a communication interface. The processor may be a dedicated processor, a central processing unit (CPU), etc. The processor may access the storage unit to execute instructions or applications stored in the storage unit to implement related functions. The storage unit may include a volatile memory and / or a non-volatile memory. The input / output interface may be communicatively connected to various sensors provided in the indoor unit 11 to receive detection values ​​of various sensors provided in the indoor unit 11. The communication interface may support different wireless communication protocols, such as Wi-Fi, Bluetooth, etc.

[0071] The indoor controller 111 is communicatively connected to a control terminal, which may be a remote controller, a wired controller, or other mobile terminals such as a smart phone, a tablet computer, a computer, a wearable device, and the like.

[0072] The number of indoor units can be one or more, for example Figure 2 As shown, an indoor unit 11a and an indoor unit 11b are provided. The other indoor unit may also be a ceiling-mounted indoor unit, or may adopt other air supply structures, such as a wall-mounted air supply structure, a floor-standing air supply structure, a duct-type air supply structure, etc.; the indoor unit 11b is also provided with components such as an indoor heat exchanger 105b and an indoor fan 107b.

[0073] In one or more embodiments of the present application, when multiple indoor units are provided, the indoor units are also provided with indoor throttling elements (such as Figure 2 The indoor throttling element is configured to reduce the pressure of the refrigerant and expand it, and the opening of the indoor throttling element is adjustable, for example, an electronic expansion valve can be selected.

[0074] The following is an introduction to the sensors in the indoor unit.

[0075] In one or more embodiments of the present application, a return air temperature sensor is provided at the return air outlet of the indoor unit.

[0076] In one or more embodiments of the present application, an air supply outlet of the indoor unit may be provided with an air supply temperature sensor.

[0077] In one or more embodiments of the present application, the air conditioning device further comprises at least one sensor module 115. The sensor module 115 is mounted on the ceiling and provides a controlled field of view 116 pointing downward to the ground, and the sensor module 115 comprises at least one infrared temperature sensor.

[0078] like Figure 3 As shown, in one or more embodiments of the present application, the sensor module 115 is disposed in the ceiling-mounted indoor unit. Exemplarily, the sensor module 115 is disposed on the panel, for example, it can be located at a corner of the panel, for example, embedded in a corner cover of the panel, and exposed at the corner cover.

[0079] In one or more embodiments of the present application, the infrared temperature sensor is a thermopile sensor, which is used to detect ground temperature. The thermopile sensor is a sensor that works based on the thermoelectric effect, which uses the thermoelectric properties of materials to measure temperature changes. The thermopile sensor includes a series of connected thermocouples, usually composed of two different metal materials. When the connection points of these metal materials are at different temperatures, a voltage is generated. This voltage signal changes with temperature, thereby achieving measurement and sampling. The controlled field of view 116 refers to the area range that the thermopile sensor can detect.

[0080] The sensing module 115 also includes a radar sensor (not shown), which is configured to detect the distance of a person in the controlled field of view 116 relative to the center of the controlled field of view 116. In one or more embodiments of the present application, the radar sensor and the thermopile sensor are integrated on the same module. Taking the millimeter wave radar sensor as an example, the radar sensor can accurately measure the human body in the controlled field of view 116 to obtain information such as the distance, angle, and number of human targets. The radar sensor uses electromagnetic waves to detect the position of the target object. For example, the radar sensor emits a beam of electromagnetic waves and then receives the signal reflected by the target object. By analyzing the received signal, the radar can determine the position, distance, speed, and direction of the target object; or, by measuring the angle by the phase method, the radar sensor calculates the time of the radar signal and the distance from the target by the difference between the receiving frequency and the transmitting frequency. The detection range of the radar sensor can be set, for example, by adjusting the transmission angle and the receiving angle to change the detection range. In the present application, the detection range of the radar sensor covers the entire controlled field of view 116.

[0081] As described above, the thermopile sensor uses the thermoelectric effect of the material to measure the temperature, and people moving in the controlled field of view 116 will cause changes in the surrounding convection and thermal radiation, generate additional heat, and cause the temperature value detected by the thermopile sensor to increase, thereby causing errors. In order to ensure that the ground temperature detected by the thermopile sensor is accurate, in this application, an estimation unit 117 and a control unit 118 are also designed in the air conditioning device.

[0082] like Figure 4 As shown, the estimating unit 117 works based on the detection result of the sensing module 115. In one or more embodiments of the present application, the estimating unit 117 is configured to estimate the position of the person in the controlled field of view 116 based on the distance of the person in the controlled field of view 116 relative to the center of the controlled field of view 116 and the installation height of the thermopile sensor, and calculate the human body temperature contribution rate of the human body in the controlled field of view 116 based on the estimated position of the person in the controlled field of view 116, and correct the ground temperature detected by the thermopile sensor based on the human body temperature contribution rate to obtain the corrected ground temperature.

[0083] The air conditioning device can use the corrected ground temperature to perform control or determine whether the air conditioning device is faulty. Exemplarily, the control unit 118 in the air conditioning device is configured to control at least one executive component in the refrigeration cycle based on the corrected ground temperature or to infer whether the air conditioning device is faulty. The executive components in the refrigeration cycle include, but are not limited to, compressors, outdoor fans, indoor fans, outdoor throttling elements, and indoor throttling elements. For example, there is a deviation between the temperature detected by the return air temperature sensor and the corrected ground temperature, which is usually caused by the sinking of cold air and the floating of hot air. At this time, different weights can be assigned to the temperature detected by the return air temperature sensor and the corrected ground temperature, so as to further calculate the real-time indoor temperature based on the temperature detected by the return air temperature sensor and the corrected ground temperature at the same time. By adjusting the amplitude of the weight, it can be ensured that the influence of the lower ground temperature and the higher return air temperature in the real-time indoor temperature is properly considered, which improves the interpretability and reliability of the subsequent intelligent control model, so that more intelligent intelligent decisions can be made.

[0084] When there is an abnormal temperature difference between the detection value of the return air temperature sensor and the corrected ground temperature, it can be considered that the air-conditioning device has failed or is likely to fail. Further, the corresponding fault can be eliminated through software algorithms or the air-conditioning device can be comprehensively inspected and diagnosed by professional air-conditioning maintenance personnel.

[0085] In one or more embodiments of the present application, the estimating unit 117 is configured to obtain a normalized Gaussian distribution relationship between the field of view angle of the controlled field of view 116 and the detected temperature, estimate the relative angle between the person in the controlled field of view 116 and the thermopile sensor based on the distance of the person in the controlled field of view 116 detected by the radar sensor relative to the center of the controlled field of view 116 and the installation height of the thermopile sensor, and calculate the body temperature contribution rate of the person in the controlled field of view 116 based on the relative angle and the normalized Gaussian distribution relationship.

[0086] Figure 5 The temperature measurement curve of the thermopile sensor in the air-conditioning device provided by one or more embodiments of the present application, wherein the X-axis represents the viewing angle of the controlled field of view 116, and the Y-axis represents the normalized contribution rate of different viewing angles of the controlled field of view 116 to the temperature detected by the thermopile sensor. Figure 5 It can be seen that the temperature normalized contribution rate of the field of view angle of the controlled field of view 116 is normally distributed. Based on the above rules, the normalized Gaussian distribution relationship between the field of view angle of the controlled field of view 116 and the detected temperature can be obtained. The normalized Gaussian distribution relationship between the field of view angle of the controlled field of view 116 and the detected temperature can be expressed by the following formula:

[0087]

[0088] Where x represents the angle of the controlled field of view 116, f(x) is the normalized contribution rate of the temperature detected by the thermopile sensor, σ is the standard deviation of the Gaussian function, and σ can be determined under experimental conditions based on the hardware performance of the thermopile sensor; exp represents the exponential function of the base e of the natural logarithm.

[0089] like Figure 6 As shown, in one or more embodiments of the present application, the thermopile sensor is installed vertically to the ground, that is, the ground temperature is measured directly downward, and the temperature measurement contribution rate (that is, the normalized contribution rate) of different positions on the ground is different. The controlled center has the highest contribution rate to the temperature measurement, which is 100% by default, and the edge has the lowest contribution rate, for example, 10%, as shown in FIG. Figure 5 Normal distribution shown.

[0090] like Figure 7 As shown, the position of the person detected by the millimeter wave radar and the viewing angle of the controlled field of view 116 are in a one-to-one correspondence relationship. Specifically, Figure 7 Point O represents the center of the controlled field of view 116. The radar sensor can detect the distance of a person in the controlled field of view 116 relative to the center O of the controlled field of view 116, for example, represented by R. The thermopile sensor (such as Figure 7 The installation height H of the thermopile sensor (shown in FIG. 121) is known, so the relative angle between the person in the controlled field of view and the thermopile sensor can be calculated. The relative angle is represented by θ in the figure, and θ=arctan(R / H). Further, based on the relative angle and the normalized Gaussian distribution relationship, the body temperature contribution rate of the person in the controlled field of view 116 can be calculated, that is,:

[0091] In one or more embodiments of the present application, the estimating unit 117 is further configured to calculate the human body temperature contribution value based on the product of the human body temperature contribution rate and the human body temperature contribution threshold, and the corrected ground temperature is the difference between the ground temperature detected by the thermopile sensor and the human body temperature contribution value. Specifically, it includes the following: Figure 8 Multiple steps shown.

[0092] Step S101: The thermopile sensor detects the ground temperature.

[0093] Step S102: The radar sensor detects the distance of a person in the controlled field of view relative to the center of the controlled field of view.

[0094] Step S103: Estimate the position of the person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor.

[0095] Step S104: Calculate the body temperature contribution rate of the human body in the controlled field of view based on the estimated position of the human in the controlled field of view.

[0096] Step S105: Calculate the human body temperature contribution value based on the product of the human body temperature contribution rate and the human body temperature contribution threshold.

[0097] Step S106: taking the difference between the ground temperature detected by the thermopile sensor and the human body temperature contribution value as the corrected ground temperature.

[0098] In one or more embodiments of the present application, the human body temperature contribution threshold is determined by Fig. 9 The multiple steps in the method shown are obtained.

[0099] Step S201: Setting a first set ambient temperature for obtaining a human body temperature contribution threshold, controlling the operation of the air conditioning device, and when the ground temperature detected by the thermopile sensor is the same as the first set ambient temperature, using the ground temperature detected by the thermopile sensor as the unmanned ground temperature. The unmanned ground temperature can be recorded as: T e0 .

[0100] Step S202: Read the ground temperature detected by the thermopile sensor when the human object is located at the center of the controlled field of view as the ground temperature where someone is located. The ground temperature where someone is located can be recorded as: T ei .

[0101] The human subject is preferably an adult male or female of standard height and weight and normally dressed.

[0102] Step S203: Calculate the temperature difference between the unmanned ground temperature and the manned ground temperature, and record it as the single-person maximum temperature measurement interference value T 0 =|T ei -T e0 |.

[0103] Step S204: testing the maximum temperature measurement interference value of a single person when multiple human objects are located at the center of the controlled field of view, and calculating the average to obtain the human body temperature contribution threshold value T under the current first set ambient temperature. n ,

[0104] Step S205: Setting a plurality of first set ambient temperatures T j1 , T j2 ..., T jN , and repeat the above steps to obtain multiple human body temperature contribution thresholds corresponding to multiple first set ambient temperatures, denoted as T n_j1 , T n_j2 , ..., T n_jN .

[0105] Step S206: Establish a linear fitting model of the first set ambient temperature and human body temperature contribution threshold and obtain a linear coefficient.

[0106] The linear fitting model is recorded as:

[0107] T n_jN =αT jN +β

[0108] The linear coefficients α and β are obtained by using a common linear fitting algorithm (such as the least squares method) using data points formed by a plurality of first set ambient temperatures and a plurality of human body temperature contribution thresholds.

[0109] Step S207: Substitute the linear coefficient into the linear fitting model to obtain a linear function of the indoor environment temperature and the human body contribution threshold.

[0110] Step S208: Based on the indoor ambient temperature and the linear function, the contribution threshold corresponding to the indoor ambient temperature can be obtained. That is, when there is a real-time indoor ambient temperature, the contribution threshold corresponding to the indoor ambient temperature can be obtained based on the linear function. The contribution threshold obtained based on the real-time indoor ambient temperature can be recorded as T t .

[0111] The estimating unit 117 can calculate the human body temperature contribution value based on the product of the human body temperature contribution rate and the human body temperature contribution threshold, and the human body temperature contribution value is recorded as T m , that is,

[0112] Assume that the ground temperature detected by the thermopile sensor is T f , then the corrected ground temperature T′ f =T f -T m .

[0113] The indoor ambient temperature itself will also affect the detection temperature of the thermopile. Fig.10 As shown, in one or more embodiments of the present application, the air conditioning device further includes a correction unit 119. The correction unit 119 corrects the ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor, and the ambient temperature correction model calculation system. The estimation unit 117 is configured to estimate the position of the person in the controlled field of view 116 based on the distance of the person in the controlled field of view 116 relative to the center of the controlled field of view 116 and the installation height of the thermopile sensor, and calculate the human body temperature contribution rate of the human body in the controlled field of view 116 based on the estimated position of the person in the controlled field of view 116, and correct the ground temperature based on the human body temperature contribution rate correction system to obtain the corrected ground temperature.

[0114] Specifically, including Fig.11 Multiple steps shown.

[0115] Step S301: The thermopile sensor detects the ground temperature.

[0116] Step S302: The calculation system corrects the ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor and the test temperature model.

[0117] Step S303: The radar sensor detects the distance of a person in the controlled field of view relative to the center of the controlled field of view.

[0118] Step S304: Estimate the position of the person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor.

[0119] Step S305: Calculate the body temperature contribution rate of the human body in the controlled field of view based on the estimated position of the human in the controlled field of view.

[0120] Step S306: Calculate the human body temperature contribution value based on the product of the human body temperature contribution rate and the human body temperature contribution threshold.

[0121] Step S307: taking the difference between the ground temperature detected by the thermopile sensor and the human body temperature contribution value as the corrected ground temperature.

[0122] like Fig.12 As shown in FIG. 1 , the ambient temperature correction model is generated by the generator 120. The generator 120 performs the following steps: Fig.13 Multiple steps shown.

[0123] Step S401: using a thermopile sensor to detect a black body radiation source with different set radiation temperatures at a second set ambient temperature to obtain a set of test temperatures.

[0124] A blackbody radiation source is an idealized physical model that produces completely uniform, temperature-dependent radiation. A blackbody radiation source consists of an internally heated cavity and a radiation window. The walls of the internal cavity are made of materials with high reflectivity and low emissivity to minimize thermal radiation to the outside world, and the radiation window is made of transparent quartz or glass so that radiation can pass through the window.

[0125] The test of step S401 can be carried out in an enthalpy difference laboratory. A calibration experiment of a single-point thermopile sensor is carried out in an enthalpy difference laboratory, using a blackbody radiation source as a thermal radiation source, and the set temperature of the blackbody is recorded as the target temperature to be measured. The thermopile sensor is set at a distance from the blackbody radiation source, for example, s cm, to ensure that the controlled field of view 116 of the thermopile sensor is entirely on the radiation surface of the blackbody radiation source. The test is repeated at multiple set ambient temperatures, and the upper threshold of the ambient temperature is set to be higher than the upper threshold of the normal indoor ambient temperature, and the lower threshold of the ambient temperature is set to be lower than the lower threshold of the normal indoor ambient temperature. The temperature of the blackbody radiation source is adjusted at each set ambient temperature to obtain different set radiation temperatures, and the radiation temperature is set within the range of 0°C-40°C to simulate the ground temperature change, and a set of test temperatures is obtained at each set ambient temperature and recorded. For example, the recording can be performed by a computer, etc.

[0126] Step S402: establishing a first fitting model that sets the radiation temperature and the test temperature and obtaining first fitting parameters of the first fitting model.

[0127] Assume that the second set ambient temperature is T α , the set radiation temperature of the black body radiation source is T β , β=1, 2, 3, ..., n; for each set radiation temperature T β , the corresponding test temperature is t α ,α=1,2,3,...,n.

[0128] A first fitting model for setting the radiation temperature and the test temperature is established and first fitting parameters of the first fitting model are obtained.

[0129] The first fitting model can be a linear model, that is, there is t α =kT β +b.

[0130] The first fitting parameters k and b are obtained by linear fitting. The linear fitting is achieved by minimizing the distance between the observed data points and the fitting, and is implemented by computer software such as Python, SciPy, Matlab or other statistical software.

[0131] Step S403: Obtain corresponding first fitting parameters respectively at different second set ambient temperatures.

[0132] Step S404: establishing a second fitting model of the second set ambient temperature and the first fitting parameters and obtaining second fitting parameters of the second fitting model.

[0133] Since the detection value of the thermopile sensor is closely related to the ambient temperature, the first fitting parameters are different at different ambient temperatures. Based on this, a second fitting model with a second set ambient temperature and the first fitting parameters is established.

[0134] In one or more embodiments of the present application, the second fitting model is a quadratic polynomial model; illustratively, the second fitting model is:

[0135]

[0136] Where T j is the second set ambient temperature, k and b are the first fitting parameters; m, n, q, j, j and s are the second fitting parameters.

[0137] The second fitting parameter in the second fitting model is solved by the least square method. The least square method can be used to solve the fitting parameter using statistical software commonly used in the prior art, which will not be described in detail here.

[0138] Step S405: after solving m, n, q, j, i and s, a test temperature model is established based on the second fitting model and the measured installation distance offset.

[0139]

[0140] In the above formula, T e_r Corrected ground temperature for the system, T j_r is the real-time ambient temperature of the air-conditioned room, T i_r is the detection temperature of the thermopile sensor, τ is the installation distance offset, τ is tested under experimental conditions, and τ is a constant.

[0141] Assume that the ground temperature detected by the thermopile sensor is T f , then the corrected ground temperature T′ f =T e_r -T m .

[0142] There may be multiple people in the controlled field of view 116, and the radar sensor can detect the position of each person in the controlled field of view 116. In one or more embodiments of the present application, the radar sensor is configured to detect the distance of each person in the controlled field of view 116 relative to the center of the controlled field of view 116. The estimating unit 117 estimates the position of each person in the controlled field of view 116 based on the distance of each person in the controlled field of view 116 relative to the center of the controlled field of view 116 and the installation height of the thermopile sensor, and calculates the human body temperature contribution rate of each person in the controlled field of view 116 based on the estimated position of each person in the controlled field of view 116, and corrects the ground temperature detected by the thermopile sensor based on the human body temperature contribution rate of all people to obtain the corrected ground temperature.

[0143] The estimating unit 117 is also configured to obtain a normalized Gaussian distribution relationship between the field of view angle and the detected temperature of the thermopile sensor, estimate the relative angle between each person in the controlled field of view 116 and the thermopile sensor based on the distance of each person in the controlled field of view 116 detected by the radar sensor relative to the center of the controlled field of view 116 and the installation height of the thermopile sensor, and calculate the body temperature contribution rate of each person in the controlled field of view 116 based on the relative angle between each person and the thermopile sensor and the normalized Gaussian distribution relationship.

[0144] The estimation unit 117 is configured to calculate the human body temperature contribution value of each person based on the product of the human body temperature contribution rate of each person and the human body temperature contribution threshold, and calculate the sum of the human body temperature contribution values ​​of all people. The corrected ground temperature is the difference between the ground temperature detected by the thermopile sensor and the sum of the human body temperature contribution values.

[0145] like Figure 7 As shown in the figure, R represents the distance of the person in the controlled field of view 116 detected by the radar sensor relative to the center of the controlled field of view 116, H represents the installation height of the thermopile sensor, and θ represents the relative angle between the person in the controlled field of view 116 and the thermopile sensor. When there are multiple people in the controlled field of view 116, the distance between each person and the center of the controlled field of view 116 can be expressed as R n , the installation height of the thermopile sensor is H, and the relative angle between each person and the thermopile sensor can be expressed as θ n ,

[0146] θ n =arctan(R n / H), n is a positive integer representing the number of people.

[0147] In this way, the contribution rate of each person's body temperature can be calculated

[0148]

[0149] Based on the indoor ambient temperature and the linear function, the contribution threshold T corresponding to the indoor ambient temperature can be obtained. t

[0150] Further, we can calculate the body temperature contribution of each person, that is, T t ×f(θ n ).

[0151] We can further obtain the sum of the human body temperature contribution value T mn =T t ×f(θ 1 )+T t ×f(θ 2 )+…+T t×f(θ n )

[0152] Assume that the ground temperature detected by the thermopile sensor is T f , then the corrected ground temperature T′ f =T f -T mn .

[0153] Specifically, including Fig.14 The multiple steps shown:

[0154] Step S501: The thermopile sensor detects the ground temperature.

[0155] Step S502: The radar sensor detects the distance of each person in the controlled field of view relative to the center of the controlled field of view.

[0156] Step S503: Estimate the position of each person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor.

[0157] Step S504: Calculate the body temperature contribution rate of each person in the controlled field of view based on the estimated position of each person in the controlled field of view.

[0158] Step S505: Calculate the human body temperature contribution value of each person based on the product of the human body temperature contribution rate of each person and the human body temperature contribution threshold.

[0159] Step S506: Calculate the sum of all human body temperature contribution values.

[0160] Step S507: The difference between the ground temperature detected by the thermopile sensor and the sum of the body temperature contribution values ​​of all persons is taken as the corrected ground temperature.

[0161] The fourth aspect of the present application provides an air conditioning device, which includes a correction unit 119 and an estimation unit 117 in addition to a control unit 118. The correction unit 119 is configured to calculate a system-corrected ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor, and the ambient temperature correction model, and the estimation unit 117 estimates the position of each person in the controlled field of view 116 based on the center distance of each person in the controlled field of view 116 relative to the controlled field of view 116 and the installation height of the thermopile sensor, and calculates the human body temperature contribution rate of each person in the controlled field of view 116 based on the estimated position of each person in the controlled field of view 116, and corrects the system ground temperature based on the human body temperature contribution rate of all people to obtain the corrected ground temperature.

[0162] The detailed process of the calculation system correcting the ground temperature can be found in the detailed description of the above embodiment. e_r Indicates the system corrected ground temperature, expressed as Tf It represents the ground temperature detected by the thermopile sensor, expressed as T mn represents the sum of the human body temperature contribution, then the corrected ground temperature T′ f =T e_r -T mn .

[0163] Specifically, including Fig.15 The multiple steps shown:

[0164] Step S601: The thermopile sensor detects the ground temperature.

[0165] Step S602: The system corrects the ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor, and the test temperature model calculation system.

[0166] Step S603: The radar sensor detects the distance of each person in the controlled field of view relative to the center of the controlled field of view.

[0167] Step S604: Estimate the position of each person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor.

[0168] Step S605: Calculate the body temperature contribution rate of each person in the controlled field of view based on the estimated position of each person in the controlled field of view.

[0169] Step S606: Calculate the human body temperature contribution value of each person based on the product of the human body temperature contribution rate of each person and the human body temperature contribution threshold.

[0170] Step S607: Calculate the sum of all human body temperature contribution values.

[0171] Step S608: The difference between the ground temperature detected by the thermopile sensor and the sum of the body temperature contribution values ​​of all persons is used as the corrected ground temperature.

[0172] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0173] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air conditioning device comprising at least one sensing module mounted on a ceiling and providing a controlled field of view directed downward to the ground, the sensing module comprising at least one infrared temperature sensor; It is characterized in that The infrared temperature sensor is a thermopile sensor, and the thermopile sensor is used to detect the ground temperature; The sensing module also includes a radar sensor configured to detect the distance of a person in the controlled field of view relative to a center of the controlled field of view; Also includes: An estimating unit is configured to estimate the position of the person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor, calculate the body temperature contribution rate of the person in the controlled field of view based on the estimated position of the person in the controlled field of view, and correct the ground temperature detected by the thermopile sensor based on the body temperature contribution rate to obtain the corrected ground temperature.

2. The air conditioning device according to claim 1, characterized in that: The estimating unit is configured to obtain a normalized Gaussian distribution relationship between a controlled field of view angle and a detected temperature, estimate a relative angle between the person in the controlled field of view and the thermopile sensor based on a distance of the person in the controlled field of view relative to a center of the controlled field of view detected by the radar sensor and an installation height of the thermopile sensor, and calculate a body temperature contribution rate of the person in the controlled field of view based on the relative angle and the normalized Gaussian distribution relationship.

3. The air conditioning device according to claim 2, characterized in that: The estimating unit is further configured to calculate a human body temperature contribution value based on a product of the human body temperature contribution rate and a human body temperature contribution threshold, and the corrected ground temperature is a difference between the ground temperature detected by the thermopile sensor and the human body temperature contribution value.

4. The air conditioning device according to claim 3, characterized in that: The human body temperature contribution threshold is obtained by the following method: A first set ambient temperature is set for obtaining a human body temperature contribution threshold, and when the ground temperature detected by the thermopile sensor is the same as the first set ambient temperature, the ground temperature detected by the thermopile sensor is used as the unmanned ground temperature; reading the ground temperature detected by the thermopile sensor when the human object is located at the center of the controlled field of view as the ground temperature with people; Calculate the temperature difference between the unmanned ground temperature and the manned ground temperature, and record it as the maximum temperature measurement interference value of a single person; Testing a single-person maximum temperature measurement interference value when multiple human objects are located at the center of the controlled field of view, and calculating the average to obtain a human body temperature contribution threshold value under the current first set ambient temperature; Setting a plurality of first set ambient temperatures and obtaining a plurality of human body temperature contribution thresholds corresponding to the plurality of first set ambient temperatures; Establishing a linear fitting model of the first set ambient temperature and human body temperature contribution threshold and obtaining a linear coefficient; Substituting the linear coefficient into the linear fitting model to obtain a linear function of indoor environment temperature and human body temperature contribution threshold; A human body temperature contribution threshold corresponding to the real-time indoor environment temperature is obtained based on the linear function.

5. An air conditioning device, comprising at least one sensing module mounted on the ceiling and providing a controlled field of view directed downward to the ground, the sensing module comprising at least one infrared temperature sensor; It is characterized in that The infrared temperature sensor is a thermopile sensor, and the thermopile sensor is used to detect the ground temperature; The sensing module also includes a radar sensor configured to detect the distance of a person in the controlled field of view relative to a center of the controlled field of view; Also includes: Correction unit: configured to correct the ground temperature based on the real-time ambient temperature of the air-conditioned room, the ground temperature detected by the thermopile sensor and the ambient temperature correction model calculation system; and An estimating unit: configured to estimate the position of a person in the controlled field of view based on the distance of the person in the controlled field of view relative to the center of the controlled field of view and the installation height of the thermopile sensor, calculate the body temperature contribution rate of the person in the controlled field of view based on the estimated position of the person in the controlled field of view, and correct the system-corrected ground temperature based on the body temperature contribution rate to obtain the corrected ground temperature.

6. The air conditioning device according to claim 5, characterized in that: Also includes: A generating unit is configured to use the thermopile sensor to detect a blackbody radiation source with different set radiation temperatures at a second set ambient temperature to obtain a set of test temperatures, establish a first fitting model of the set radiation temperature and the test temperature and obtain first fitting parameters of the first fitting model; obtain corresponding first fitting parameters at different second set ambient temperatures, establish a second fitting model of the second set ambient temperature and the first fitting parameters and obtain second fitting parameters of the second fitting model; and establish a test temperature model based on the second fitting model and the measured installation distance offset.

7. An air conditioning device comprising at least one sensing module mounted on the ceiling and providing a controlled field of view directed downwardly toward the ground, the sensing module comprising at least one infrared temperature sensor; It is characterized in that The infrared temperature sensor is a thermopile sensor, and the thermopile sensor is used to detect the ground temperature; The sensing module also includes a radar sensor configured to detect the distance of each person in the controlled field of view relative to the center of the controlled field of view; Also includes: An estimating unit estimates the position of each person in the controlled field of view based on the center distance of each person in the controlled field of view relative to the controlled field of view and the installation height of the thermopile sensor, calculates the body temperature contribution rate of each person in the controlled field of view based on the estimated position of each person in the controlled field of view, and corrects the ground temperature detected by the thermopile sensor based on the body temperature contribution rates of all persons to obtain the corrected ground temperature.

8. The air conditioning device according to claim 7, characterized in that: The estimating unit is configured to obtain a normalized Gaussian distribution relationship between the field of view angle and the detected temperature of the thermopile sensor, estimate a relative angle between each person in the controlled field of view and the thermopile sensor based on the distance of each person in the controlled field of view detected by the radar sensor relative to the center of the controlled field of view and the installation height of the thermopile sensor, and calculate a human body temperature contribution rate of each person in the controlled field of view based on the relative angle between each person and the thermopile sensor and the normalized Gaussian distribution relationship.

9. The air conditioning device according to claim 8, characterized in that: The estimating unit is also configured to calculate the human body temperature contribution value of each person based on the product of the human body temperature contribution rate of each person and the human body temperature contribution threshold, and calculate the sum of the human body temperature contribution values ​​of all people. The corrected ground temperature is the difference between the ground temperature detected by the thermopile sensor and the sum of the human body temperature contribution values.

10. An air conditioning device comprising at least one sensing module mounted on a ceiling and providing a controlled field of view directed downwardly toward the ground, the sensing module comprising at least one infrared temperature sensor; It is characterized in that The infrared temperature sensor is a thermopile sensor, and the thermopile sensor is used to detect the ground temperature; The sensing module also includes a radar sensor configured to detect the distance of each person in the controlled field of view relative to the center of the controlled field of view; Also includes: A correction unit configured to correct the floor temperature based on the real-time ambient temperature of the air-conditioned room, the floor temperature detected by the thermopile sensor, and the ambient temperature correction model calculation system; and An estimating unit estimates the position of each person in the controlled field of view based on the center distance of each person in the controlled field of view relative to the controlled field of view and the installation height of the thermopile sensor, calculates the body temperature contribution rate of each person in the controlled field of view based on the estimated position of each person in the controlled field of view, and corrects the system-corrected ground temperature based on the body temperature contribution rates of all persons to obtain a corrected ground temperature.

Images