Air conditioning device

Abstract

The present invention provides an air conditioning device comprising a sensing module mounted on a ceiling and providing a controlled field of view pointing downward to the ground, the sensing module comprising a thermopile sensor for detecting the ground temperature and a plurality of area sensors; the plurality of area sensors are configured to detect whether people exist in different detection areas in the controlled view field or not; the first correction part is configured to call a corresponding linear correction coefficient based on the environment temperature of the air-conditioned room and correct the ground temperature detected by the thermopile sensor by using the linear correction coefficient to obtain a first corrected ground temperature; the second correction part is configured to call a human body temperature compensation value corresponding to the position of a detection area based on the detection area where a person exists, and correct the first corrected ground temperature to obtain a second corrected ground temperature; and a control section configured to control operation of an execution component in the at least one refrigeration cycle based on the second corrected ground temperature or to estimate whether or not there is a malfunction in the air conditioning device. According to the invention, accurate ground temperature detection can be realized.

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] In view of 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 first aspect of the present invention designs and provides an air conditioning device.

[0006] The air conditioning device comprises at least one sensing module, which is mounted on the ceiling and provides a controlled field of view pointing downward to the ground. The sensing module comprises at least one infrared temperature sensor, which is a thermopile sensor and is used to detect the ground temperature.

[0007] In one or more embodiments of the present application, the sensing module further includes: a plurality of area sensors, wherein the plurality of area sensors are configured to detect whether there are people in different detection areas in the controlled field of view.

[0008] In one or more embodiments of the present application, the air conditioning device further includes: a first correction unit and a second correction unit, the first correction unit being configured to call a linear correction coefficient corresponding to the ambient temperature of the air-conditioned room based on the ambient temperature of the air-conditioned room, and use the linear correction coefficient to correct the ground temperature detected by the thermopile sensor to obtain a first corrected ground temperature; the second correction unit being configured to call a human body temperature compensation value corresponding to the position of the detection area based on the detection area where there are people, and use the human body temperature compensation value to correct the first corrected ground temperature to obtain a second corrected ground temperature; and

[0009] In one or more embodiments of the present application, the air conditioning device further includes a control unit configured to control the operation of an execution component in at least one refrigeration cycle or estimate whether the air conditioning device has a fault based on the second corrected floor temperature.

[0010] 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 set ambient temperature to obtain a set of test temperatures, establish a first fitting model for the set radiation temperature and the test temperature and obtain the original linear coefficient; substitute the test temperature and the original linear coefficient into the first fitting model to calculate a first prediction value, establish an error function of the first prediction value and the set temperature, and solve the optimized linear coefficient that minimizes the error function; obtain a set of optimized linear coefficients at different set ambient temperatures, establish a second fitting model for the set ambient temperature and the optimized linear coefficient; solve the fitting parameters in the second fitting model by the least squares method; obtain the fitting function of the linear correction coefficient and the actual ambient temperature based on the fitting parameters and the second fitting model, and generate the linear correction coefficient based on the real-time ambient temperature of the air-conditioned room and the fitting function.

[0011] In one or more embodiments of the present application, the first fitting model is a linear fitting model.

[0012] In one or more embodiments of the present application, the second fitting model is a quadratic polynomial model.

[0013] In one or more embodiments of the present application, the detection areas of the multiple area sensors are respectively distributed concentrically with the controlled field of view, and the detection ranges of the multiple area sensors cover the controlled field of view.

[0014] In one or more embodiments of the present application, the controlled field of view angle of the thermopile sensor is 90°.

[0015] In one or more embodiments of the present application, the field of view angles of the three area sensors are 30°, 60° and 90° respectively.

[0016] In one or more embodiments of the present application, the closer the detection area of ​​the area sensor that detects a person is to the center of the controlled field of view, the higher the human body temperature compensation value; the farther the detection area of ​​the area sensor that detects a person is from the center of the controlled field of view, the lower the human body temperature compensation value.

[0017] In one or more embodiments of the present application, when multiple area sensors detect a person at the same time, a corresponding human body temperature compensation value is called based on the detection area position of one of the area sensors that detects the person and is relatively far from the controlled field of view.

[0018] A second aspect of the present application provides an air conditioning device, comprising at least one sensing module, which is mounted on a ceiling and provides a controlled field of view pointing downward to the ground, the sensing module comprising 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.

[0019] In one or more embodiments of the present application, the air-conditioning device also includes a system correction unit, which is configured to call a linear correction coefficient corresponding to the ambient temperature of the air-conditioned room based on the ambient temperature of the air-conditioned room, and use the linear correction coefficient to correct the ground temperature detected by the thermopile sensor to obtain a system-corrected ground temperature.

[0020] In one or more embodiments of the present application, the air conditioning device further includes a control unit configured to control the operation of an execution component in at least one refrigeration cycle or estimate whether the air conditioning device has a fault based on the system corrected ground temperature.

[0021] 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 set ambient temperature to obtain a set of test temperatures, establish a first fitting model for the set radiation temperature and the test temperature and obtain the original linear coefficient; substitute the test temperature and the original linear coefficient into the first fitting model to calculate a first prediction value, establish an error function between the first prediction value and the set temperature, and solve the optimized linear coefficient that minimizes the error function; obtain a set of optimized linear coefficients at different set ambient temperatures, establish a second fitting model for the set ambient temperature and the optimized linear coefficient, solve the fitting parameters in the second fitting model by the least squares method, obtain the linear correction coefficient and the fitting function of the actual ambient temperature based on the fitting parameters and the second fitting model, and generate the linear correction coefficient based on the real-time ambient temperature of the air-conditioned room and the fitting function.

[0022] The third aspect of the present application provides an air conditioning device, comprising at least one sensor module, which is installed on the ceiling and provides a controlled field of view pointing downward to the ground, and the sensor 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.

[0023] In one or more embodiments of the present application, the sensing module further includes: a plurality of area sensors, wherein the plurality of area sensors are configured to detect whether there are people in different detection areas in the controlled field of view.

[0024] In one or more embodiments of the present application, the air-conditioning device also includes a human body temperature compensation unit, which is configured to call a human body temperature compensation value corresponding to the position of the detection area based on a detection area with people, and use the human body temperature compensation value to correct the ground temperature detected by the thermopile sensor to obtain a human body compensation temperature.

[0025] In one or more embodiments of the present application, the air conditioning device further includes a control unit configured to use the human body compensation temperature as the ground temperature to control the operation of an executive component in at least one refrigeration cycle or to infer whether the air conditioning device has a fault.

[0026] In one or more embodiments of the present application, detection areas of multiple area sensors are respectively distributed concentrically with the controlled field of view, and the detection ranges of multiple area sensors cover the controlled field of view; the closer the detection area of ​​the area sensor that detects a person is to the center of the controlled field of view, the higher the human body compensation temperature; the farther the detection area of ​​the area sensor that detects a person is from the center of the controlled field of view, the lower the human body compensation temperature.

[0027] In one or more embodiments of the present application, when multiple area sensors detect a person at the same time, the corresponding human body compensation temperature is called based on the detection area position of one of the area sensors that detects the person and is relatively far from the controlled field of view.

[0028] The present application overcomes the disturbance of ambient temperature on the ground temperature detection accuracy of the thermopile sensor through the first correction unit, and overcomes the disturbance of people moving inside the air-conditioned room on the ground temperature detection accuracy of the thermopile sensor through the second correction unit, thereby realizing long-distance and large-range ground temperature measurement, providing data support for intelligent control of air conditioners, making indoor temperature distribution estimation more accurate, and providing an accurate data source for building compliance prediction.

[0029] 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

[0030] 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.

[0031] Figure 1 A schematic diagram of the structure of an air conditioning device provided by one or more embodiments of the present application;

[0032] Figure 2 A schematic diagram of the structure of an air conditioning device provided by one or more embodiments of the present application;

[0033] 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;

[0034] Figure 4 A schematic block diagram of the structure of an air conditioning device provided in one or more embodiments of the present application;

[0035] Figure 5 A schematic block diagram of the structure of an air conditioning device provided in one or more embodiments of the present application;

[0036] Figure 6 It is a structural schematic diagram of using a thermopile sensor to detect black body radiation sources with different set radiation temperatures at a set ambient temperature;

[0037] Figure 7 A flow chart of a generating unit in an air conditioning device provided by one or more embodiments of the present application;

[0038] Figure 8 A schematic diagram of the use status of the sensor module provided in one or more embodiments of the present application;

[0039] Fig. 9 A schematic diagram of a detection area of ​​an area sensor in a sensing module provided in one or more embodiments of the present application;

[0040] Fig.10 A determination table for estimating human body compensation temperature in one or more embodiments of the present application;

[0041] Fig.11 It is the relationship curve between the field of view angle and the nominal output of the thermopile sensor;

[0042] Fig.12 A schematic block diagram of the structure of an air conditioning device provided in one or more embodiments of the present application;

[0043] Fig.13A schematic block diagram of the structure of an air conditioning device provided in one or more embodiments of the present application;

[0044] Fig.14 A schematic block diagram of the structure of an air conditioning device provided in one or more embodiments of the present application;

[0045] 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; 107b, indoor fan; 108, gas-liquid separator; 109, gas-side shutoff valve; 110, liquid-side shutoff valve; 111, indoor controller; 111a, indoor controller; 111b, indoor controller; 112, liquid-side connecting pipe; 113, gas-side connecting pipe; 114, Switching valve; 115, sensing module; 116, controlled field of view; 117, thermopile sensor; 118a, area sensor 1; 118b, area sensor 2; 118c, area sensor 3; 119, first correction unit; 120, second correction unit; 121, control unit; 122, generation unit; 123, blackbody radiation source; 20, sensing module; 201, thermopile sensor; 21, system correction unit; 22, control unit; 23, generation unit; 30, sensing module; 301, thermopile sensor; 302a, area sensor 1; 302b, area sensor 2; 302c, area sensor 3; 31, human body temperature compensation unit; 32, control unit; D1, detection area 1; D2, detection area 2; D3, detection area 3. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] An embodiment of the air conditioning device provided in the present application will be described with reference to the accompanying drawings.

[0059] The air conditioning device 100 is installed in buildings such as apartments, hotels, office buildings, and residences, etc. The air conditioning device 100 can independently perform cooling operation or independently perform heating operation.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] The switching valve 114 is used to switch the flow direction of the refrigerant between the cooling mode and the heating mode.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] The indoor unit 11 includes at least one or more ceiling-mounted indoor units. A 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.

[0075] The ceiling-mounted indoor unit includes a roughly 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.

[0076] The return air vent is located approximately in the center of the panel. 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 collisions 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.

[0077] An indoor fan 107 and an indoor heat exchanger 105 are provided in the main body.

[0078] 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.

[0079] 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).

[0080] 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.

[0081] 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.

[0082] The number of indoor units can be one or more, for example Figure 2As 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.

[0083] When multiple indoor units are provided, 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.

[0084] The following is an introduction to the sensors in the indoor unit.

[0085] Exemplarily, a return air temperature sensor is provided at the return air outlet of the indoor unit.

[0086] In one or more embodiments of the present application, an air supply temperature sensor may be provided at the air supply outlet of the indoor unit.

[0087] 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.

[0088] 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, at a corner of the panel, such as embedded in a corner cover of the panel and exposed from the corner cover.

[0089] In one or more embodiments of the present application, the infrared temperature sensor is a thermopile sensor 117, which is used to detect ground temperature. The thermopile sensor 117 is a sensor that works based on the thermoelectric effect, which uses the thermoelectric properties of materials to measure temperature changes. The thermopile sensor 117 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 117 can detect.

[0090] The sensing module 115 further includes area sensors 118 a , 118 b , and 118 c , which are configured to detect whether there are people in different areas in the controlled field of view 116 .

[0091] The thermopile sensor 117 is easily affected by the ambient temperature when measuring temperature, especially when measuring the ground temperature at a long distance. This is determined by its working principle. The thermopile sensor 117 measures temperature based on the thermoelectric effect. The thermoelectric effect refers to the potential difference generated when two different metals or semiconductors are at different temperatures. If the ambient temperature changes, the measurement value of the thermopile sensor 117 will be affected. In addition, the change in ambient temperature will cause the conduction and diffusion of heat in the material, which will change the temperature distribution in the thermopile sensor 117, thereby affecting the accuracy of its measurement. In order to ensure that the detected ground temperature is accurate, the air conditioning device is also designed with a first correction unit 119, a second correction unit 120 and a control unit 121.

[0092] In one or more embodiments of the present application, the first correction unit 119 is configured to call a linear correction coefficient corresponding to the ambient temperature of the air-conditioned room based on the ambient temperature of the air-conditioned room, and use the linear correction coefficient to correct the ground temperature detected by the thermopile sensor 117 to obtain a first correction coefficient.

[0093] In one or more embodiments of the present application, the second correction unit 120 is configured to call the human body compensation temperature corresponding to the detection area position based on the detection area with people, and use the human body compensation temperature to correct the first corrected ground temperature to obtain the second corrected ground temperature.

[0094] In one or more embodiments of the present application, the control unit 121 is configured to control an execution component in at least one refrigeration cycle or estimate whether the air-conditioning device has a fault based on the second corrected floor temperature.

[0095] The actuators in the refrigeration cycle include but are not limited to a compressor, an outdoor fan, an indoor fan, an outdoor throttling element, and an indoor throttling element.

[0096] The present application overcomes the disturbance of the ambient temperature on the ground temperature detection accuracy of the thermopile sensor 117 through the first correction unit 119, and overcomes the disturbance of the people moving in the air-conditioned room on the ground temperature detection accuracy of the thermopile sensor 117 through the second correction unit 120, thereby realizing long-distance and large-range ground temperature measurement, providing data support for intelligent air-conditioning control, making the indoor temperature distribution estimation more accurate, and providing an accurate data source for building compliance prediction.

[0097] The following is an example of executing air conditioning device control based on the second corrected floor temperature. In principle, in an air-conditioned room, cold air will sink and hot air will float. When the air conditioning device is operating in heating mode, there will be a temperature difference between the floor temperature and the temperature at the return air outlet of the ceiling-mounted indoor unit, especially when the indoor unit is just started, which will cause deviations in the operation of the air conditioning device and affect the comfort of the indoor environment. In this case, the control unit 121 can perform the following control based on the second corrected floor temperature.

[0098] When the difference between the detection value of the return air temperature sensor and the second corrected floor temperature is above the set threshold, the corrected room temperature is calculated according to the pre-set floor temperature weight and return air temperature weight, and based on the deviation between the corrected room temperature calculation and the target temperature of the air-conditioned room, the operation of the compressor and other actuators is further controlled to eliminate this deviation.

[0099] In one or more embodiments of the present application, it is assumed that the detection value of the return air temperature sensor is recorded as T i , the second corrected ground temperature is denoted as T f2 , the corrected room temperature is recorded as T i_rev , then when T i -T f2 <0℃, the ground temperature weight is 0, and the return air temperature weight is 1. At this time, the temperature above the air-conditioned room is relatively low, and the control effect of the heating operation has not yet been able to increase the ground temperature. Correct the room temperature T i_rev T i ; When 0℃≤T i -T f2 <3℃, the weight of floor temperature is 1 / 2, the weight of return air temperature is 1 / 2, and the corrected room temperature T i_rev is (T i +T f2 ) / 2; when 3℃≤T i -T f2 <6℃, the weight of floor temperature is 2 / 3, the weight of return air temperature is 1 / 3, and the corrected room temperature T i_rev is (T i +2*T f2 ) / 3; when 6℃≤Ti-T f2 <10℃, the ground temperature weight is 1, the return air temperature weight is 0, and the corrected room temperature T i_rev T f2 .

[0100] Under a specific operating state (for example, executing heating operation for a set duration), when there is an abnormal difference between the detection value of the return air temperature sensor and the second corrected floor temperature, the abnormal difference may be a temperature value with a very large deviation. 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 can be comprehensively inspected and diagnosed by professional air-conditioning maintenance personnel.

[0101] In one or more embodiments of the present application, the air conditioning device further includes a generating unit 122. The generating unit 122 is configured to execute the following steps: Figure 7 The multiple steps shown are used to generate the linear correction coefficients.

[0102] Step S11: using the thermopile sensor 117 to detect the black body radiation source 123 with different set radiation temperatures at a set ambient temperature to obtain a set of test temperatures.

[0103] The black body radiation source 123 is an idealized physical model that can generate completely uniform temperature-dependent radiation. The black body radiation source 123 consists of an internally heated cavity and a radiation window. The wall of the internal cavity is made of a material with high reflectivity and low emissivity to minimize thermal radiation to the outside, and the radiation window is made of transparent quartz or glass so that radiation can pass through the window.

[0104] The test of step S11 can be carried out in an enthalpy difference laboratory. A calibration experiment of a single-point thermopile sensor 117 is carried out in an enthalpy difference laboratory, and a blackbody radiation source 123 is used as a thermal radiation source, and the set temperature of the blackbody is recorded as the target temperature to be measured. The thermopile sensor 117 is set at a distance from the blackbody radiation source 123, for example, s cm, to ensure that the controlled field of view 116 of the thermopile sensor 117 is entirely on the radiation surface of the blackbody radiation source 123. The test is repeated at multiple set ambient temperatures, and the upper threshold of the set ambient temperature is higher than the upper threshold of the normal indoor ambient temperature, and the lower threshold of the set ambient temperature is lower than the lower threshold of the normal indoor ambient temperature. The temperature of the blackbody radiation source 123 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 change in ground temperature, 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.

[0105] Step S12: Establish a first fitting model for setting the radiation temperature and the test temperature and obtain the original linear coefficient.

[0106] Assume that the ambient temperature is set to Te and the radiation temperature of the black body radiation source 123 is set to T i , i = 1, 2, 3, ..., n, for each set radiation temperature T i, the corresponding test temperature is t i , i=1, 2, 3, ..., n.

[0107] The first fitting model with set radiation temperature and test temperature is established and the original linear coefficients are obtained.

[0108] The first fitting model can be a linear model, that is, there is t i =kT i +b.

[0109] By setting the radiation temperature and the test temperature in one-to-one correspondence in step S11, a set of original linear coefficients k and b can be obtained through linear fitting. Linear fitting is achieved by minimizing the distance between the observed data points and the fitting, and is achieved through computer software such as Python, SciPy or other statistical software.

[0110] Step S13: Substitute the test temperature and the original linear coefficient into the first fitting model to calculate the first predicted value, establish an error function between the first predicted value and the set temperature, and solve the optimized linear coefficient that minimizes the error function.

[0111] The first prediction value can be expressed as t′ i , t′ i =kt i +b.

[0112] Further establishing an error function, in one or more embodiments of the present application, the error function can be expressed as:

[0113]

[0114] That is, the difference between the data point and the predicted value of the first fitting model is taken as the error, and the square of the residual is taken as the error function. The square of the residual is easier to differentiate and can better characterize the size of the error.

[0115] The error function ΔT can be regarded as a multivariate function of linear coefficients. Further, mathematical methods can be used to find the model parameters that minimize the error function ΔT, that is, to optimize the linear coefficients. The optimized linear coefficients can be expressed as k′ and b′. By taking the derivative of the error function and setting the derivative to zero, or by using a numerical optimization algorithm, the model parameters that minimize the error function can be found.

[0116] Step S14: obtaining a set of optimized linear coefficients at different set ambient temperatures respectively, and establishing a second fitting model of the set ambient temperature and the optimized linear coefficients.

[0117] Since the detection value of the thermopile sensor 117 is closely related to the ambient temperature, the optimized linear coefficient is different at different ambient temperatures. Based on this, a second fitting model for setting the ambient temperature and the optimized linear coefficient is established.

[0118] In one or more embodiments of the present application, the second fitting model is a quadratic polynomial model; illustratively, the second fitting model is:

[0119]

[0120] Where T ej is to set the ambient temperature, j = 1, 2, ..., m, k′ and b′ are the optimized linear coefficients; k1, k2, k3, b1, b2 and b3 are the fitting parameters.

[0121] Step S16: Solving the fitting parameters in the second fitting model by the least square method. The least square method can be used to solve the fitting parameters by using the commonly used statistical software in the prior art, which will not be described in detail here.

[0122] Step S17: After solving k1, k2, k3, b1, b2 and b3, a fitting function of the linear correction coefficient and the actual ambient temperature is obtained based on the fitting parameters and the second fitting model:

[0123]

[0124] Where k0 and b0 are linear correction coefficients, and T1 is the actual ambient temperature.

[0125] Furthermore, the ground temperature detected by the thermopile sensor 117 can be corrected according to the optimized linear correction coefficient to obtain a first corrected ground temperature T adapted to the actual ambient temperature. f1 ; T f1 =k0t i0 +b0, where t i0 is the detection value of the thermopile sensor 117 under the actual ambient temperature.

[0126] In one or more embodiments of the present application, a set of original linear coefficients can be obtained at different set ambient temperatures to establish a second fitting model of the set ambient temperature and the original linear coefficients. The fitting parameters in the second fitting model are also solved by the least squares method.

[0127] When a person is within the field of view of the thermopile, the detection value of the thermopile sensor 117 will be higher. At the same time, the position of the human body will affect the degree of the higher detection value.

[0128] like Fig.11As shown, the field of view angle of the thermopile sensor 117 receiving the infrared radiation from the ground will affect the output of the thermopile sensor 117. When the normal of the thermopile sensor 117 is perpendicular to the ground, the thermopile sensor 117 can receive the thermal radiation below it (the center of the field of view) to the greatest extent, thereby obtaining the maximum thermoelectric potential and the most accurate measurement result. The farther the ground position is from the center of the field of view, the smaller the intensity of the thermal radiation received by the thermopile sensor 117 at that position, and the lowest accuracy of the measurement result. Similarly, when a person is directly below the thermopile sensor 117, the greater the impact on the ground temperature measurement result, and the farther from the center of the field of view, the smaller the contribution rate of the human body temperature to the output of the thermopile sensor 117, that is, the smaller the impact on the accuracy of the ground temperature measurement result.

[0129] Based on the above principle, in one or more embodiments of the present application, the detection areas of the multiple area sensors are respectively concentrically distributed with the controlled field of view 116, and the detection ranges of the multiple area sensors cover the controlled field of view 116. That is, in the present application, Figure 8 As shown, the detection areas D1, D2 and D3 of the area sensors 118a, 118b and 118c are respectively distributed concentrically with the controlled field of view 116, and the detection areas D1, D2 and D3 cover the controlled field of view 116. The area sensors may also be of other numbers and distributions.

[0130] For example, the field of view angle of the thermopile sensor 117 is 90°, the field of view angle of the area sensor 118a is 30°, the field of view angle of the area sensor 118b is 60°, and the field of view angle of the area sensor 118c is 90°, corresponding to the following: Fig. 9 The detection areas D1, D2 and D3 are shown as being concentrically distributed.

[0131] When the second correction unit 120 calls the human body temperature compensation value corresponding to the detection area position based on the detection area with people, it follows the following rule: the closer the detection area of ​​the area sensor where people are detected is to the center of the controlled field of view 116, the higher the human body temperature compensation value; the farther the detection area of ​​the area sensor where people are detected is from the center of the controlled field of view 116, the lower the human body temperature compensation value.

[0132] Exemplarily, when the detection area of ​​the area sensor where a person is detected is D1, the human body temperature compensation value is Δt′1; when the detection area of ​​the area sensor where a person is detected is D2, the human body temperature compensation value is Δt′2; when the detection area of ​​the area sensor where a person is detected is D3, the human body temperature compensation value is Δt′3. Since D1 is closer to the center of the controlled field of view 116, Δt′1, Δt′2 and Δt′3 decrease in sequence. Further, the second corrected ground temperature T obtained by correcting the first corrected ground temperature using the human body temperature compensation value is f2Expressed as: T f2 =T f1 -Δt′1;T f2 =T f1 -Δt′2; and T f2 =T f1 -Δt′3.

[0133] In one or more embodiments of the present application, the detection areas of the three area sensors overlap. In order to accurately identify the position of a person, when multiple area sensors detect a person at the same time, the corresponding human body temperature compensation value is called based on the detection area position of one of the area sensors that detects a person and is relatively far away from the controlled field of view 116.

[0134] For example, Fig.10 As shown, when area sensor 118a detects a person, but the detection results of area sensor 118b and area sensor 118c are no one, the human body temperature compensation value Δt′1 is called based on the detection area D1 of area sensor 118a; when area sensor 118a detects a person, area sensor 118b detects a person, but the detection result of area sensor 118c is no one, the human body temperature compensation value Δt′2 is called based on the detection area D2 of area sensor 118b; when area sensor 118a detects a person, area sensor 118b detects a person, and area sensor 118c also detects a person, the human body temperature compensation value Δt′3 is called based on the detection area D3 of area sensor 118c.

[0135] A second aspect of the present application provides an air conditioning device, the air conditioning device includes at least one sensor module 20, the sensor module 20 is installed on the ceiling and provides a controlled field of view pointing downward to the ground, and the sensor module 20 includes at least one infrared temperature sensor. The infrared temperature sensor is a thermopile sensor 201, and the thermopile sensor 201 is used to detect the ground temperature.

[0136] The air conditioning device further includes a system correction unit 21 and a control unit 22. The system correction unit 21 is configured to call a linear correction coefficient corresponding to the ambient temperature of the air-conditioned room based on the ambient temperature of the air-conditioned room, and use the linear correction coefficient to correct the floor temperature detected by the thermopile sensor 201 to obtain a system-corrected floor temperature. The control unit 22 is configured to control the operation of at least one actuator in a refrigeration cycle or infer whether the air conditioning device has a fault based on the system-corrected floor temperature.

[0137] The following is an example of executing air conditioning device control based on the system-corrected ground temperature. In principle, in an air-conditioned room, cold air will sink and hot air will float. When the air conditioning device is operating in heating mode, there will be a temperature difference between the ground temperature and the temperature at the return air outlet of the ceiling-mounted indoor unit, especially when the indoor unit is just started, which will cause deviations in the operation of the air conditioning device and affect the comfort of the indoor environment. In this case, the control unit 22 can perform the following control based on the system-corrected ground temperature.

[0138] When the difference between the detection value of the return air temperature sensor and the system corrected floor temperature is above the set threshold, the corrected room temperature is calculated according to the pre-set floor temperature weight and return air temperature weight, and based on the deviation between the corrected room temperature calculation and the target temperature of the air-conditioned room, the operation of the compressor and other actuators is further controlled to eliminate this deviation.

[0139] For example, assume that the detection value of the return air temperature sensor is recorded as T i , the system corrected ground temperature is recorded as T f , the corrected room temperature is recorded as T i_rev , then when T i -T f <0℃, the ground temperature weight is 0, and the return air temperature weight is 1. At this time, the temperature above the air-conditioned room is relatively low, and the control effect of the heating operation has not yet been able to increase the ground temperature. Correct the room temperature T i_rev T i ; When 0℃≤Ti-Tf<3℃, the weight of the ground temperature is 1 / 2, the weight of the return air temperature is 1 / 2, and the room temperature T is corrected i_rev is (T i +T f ) / 2; When 3℃≤Ti-Tf<6℃, the weight of the ground temperature is 2 / 3, the weight of the return air temperature is 1 / 3, and the room temperature T is corrected. i_rev is (T i +2T f ) / 3; When 6℃≤Ti-Tf<10℃, the ground temperature weight is 1, the return air temperature weight is 0, and the room temperature T is corrected. i_rev T f .

[0140] Under specific operating conditions (for example, heating operation is executed for a set duration), when there is an abnormal difference between the detection value of the return air temperature sensor and the system-corrected floor 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 can be fully inspected and diagnosed by professional air-conditioning maintenance personnel.

[0141] The air conditioning device also includes a generating unit 23. The generating unit 23 is configured to use the thermopile sensor 201 to detect black body radiation sources with different set radiation temperatures at a 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 the original linear coefficient; substitute the test temperature and the original linear coefficient into the first fitting model to calculate the first prediction value, establish an error function of the first prediction value and the set temperature, and solve the optimized linear coefficient that minimizes the error function; obtain a set of optimized linear coefficients at different set ambient temperatures, establish a second fitting model of the set ambient temperature and the optimized linear coefficient, solve the fitting parameters in the second fitting model by the least squares method, obtain the fitting function of the linear correction coefficient and the actual ambient temperature based on the fitting parameters and the second fitting model, and generate the linear correction coefficient based on the real-time ambient temperature of the air-conditioned room and the fitting function.

[0142] The third aspect of the present application provides an air conditioning device, the air conditioning device includes at least one sensor module 30, the sensor module 30 is installed on the ceiling and provides a controlled field of view pointing downward to the ground, and the sensor module 30 includes at least one infrared temperature sensor. The infrared temperature sensor is a thermopile sensor 301, and the thermopile sensor 301 is used to detect the ground temperature. The sensor module 30 also includes a plurality of area sensors, and the plurality of area sensors are configured to detect whether there are people in different areas of the controlled field of view. Three area sensors (302a, 302b and 302c) can be set, and the number of area sensors is not further limited here, and more area sensors can be designed according to demand or the size of the space of the air-conditioned room.

[0143] The air conditioning device further includes a human body temperature compensation unit 31 and a control unit 32. The human body temperature compensation unit 31 is configured to call a human body temperature compensation value corresponding to the position of the detection area based on the detection area where a person is present, and use the human body temperature compensation value to correct the ground temperature detected by the thermopile sensor 301 to obtain a human body compensation temperature. The control unit 32 is configured to use the human body compensation temperature as the ground temperature to control the operation of the execution component in at least one refrigeration cycle or to infer whether the air conditioning device has a fault.

[0144] The following is an example of performing air conditioning device control based on the human body compensation temperature. In principle, in an air-conditioned room, cold air will sink and hot air will float. When the air conditioning device is operating in heating mode, there will be a temperature difference between the ground temperature and the temperature at the return air outlet of the ceiling-mounted indoor unit, especially when the indoor unit is just started, which will cause deviations in the operation of the air conditioning device and affect the comfort of the indoor environment. In this case, the control unit 32 can perform the following control based on the human body compensation temperature.

[0145] When the difference between the detected value of the return air temperature sensor and the detected value of the human body compensation temperature is above the set threshold, calculate the corrected room temperature according to the preset ground temperature weight and return air temperature weight, calculate the deviation from the target temperature of the air-conditioned room based on the corrected room temperature, and further control the operation of the compressor and other actuators to eliminate this deviation.

[0146] Exemplarily, assume that the detected value of the return air temperature sensor is denoted as T i , the human body compensation temperature is denoted as T f , and the corrected room temperature is denoted as T i_rev , then when T i - T f < 0°C, the ground temperature weight is 0, the return air temperature weight is 1. At this time, the upper temperature of the air-conditioned room is relatively low, and the control effect of the heating operation has not yet been able to increase the ground temperature. The corrected room temperature T i_rev is T i ; when 0°C ≤ Ti - Tf < 3°C, the ground temperature weight is 1 / 2, the return air temperature weight is 1 / 2, and the corrected room temperature T i_rev is (T i + T f ) / 2; when 3°C ≤ Ti - Tf < 6°C, the ground temperature weight is 2 / 3, the return air temperature weight is 1 / 3, and the corrected room temperature T i_rev is (T i + 2T f ) / 3; when 6°C ≤ Ti - Tf < 10°C, the ground temperature weight is 1, the return air temperature weight is 0, and the corrected room temperature T i_rev is T f .

[0147] In a specific operating state (for example, when the heating operation is performed for a set duration), when there is an abnormal difference between the detected value of the return air temperature sensor and the human body compensation temperature, it can be considered that the air-conditioning device has a fault or may have a fault. Further, the corresponding fault can be excluded through a software algorithm or the air conditioner can be comprehensively inspected and diagnosed by a professional air-conditioning maintenance personnel.

[0148] When the human body temperature compensation unit 31 calls the human body temperature compensation value corresponding to the detection area position based on the detected area with people, it follows the following rule: the closer the detection area of the sensor in the detected area with people is to the center of the controlled field of view 116, the higher the human body temperature compensation value; the farther the detection area of the sensor in the detected area with people is from the center of the controlled field of view 116, the lower the human body temperature compensation value.

[0149] In one or more embodiments of the present application, the detection areas of multiple area sensors overlap. In order to accurately identify the location of a person, when multiple area sensors detect a person at the same time, a corresponding human body temperature compensation value is called based on the detection area position of one of the area sensors that detects a person and is relatively far away from the controlled field of view.

[0150] 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.

[0151] 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 further includes: a plurality of area sensors, wherein the plurality of area sensors are configured to detect whether there are people in different detection areas in the controlled field of view; Also includes: A first correction unit is configured to call a linear correction coefficient corresponding to the ambient temperature of the air-conditioned room based on the ambient temperature of the air-conditioned room, and use the linear correction coefficient to correct the ground temperature detected by the thermopile sensor to obtain a first corrected ground temperature; a second correction unit configured to call a human body temperature compensation value corresponding to the position of the detection area based on a detection area with people, and use the human body temperature compensation value to correct the first corrected ground temperature to obtain a second corrected ground temperature; and A control unit is configured to control the operation of an actuator in at least one refrigeration cycle or estimate whether the air conditioning device has a fault based on the second corrected floor temperature.

2. The air conditioning device according to claim 1, characterized in that: Also includes: a generating unit configured to detect a black body radiation source with different set radiation temperatures using the thermopile sensor at a 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 an original linear coefficient; Substitute the test temperature and the original linear coefficient into the first fitting model to calculate the first predicted value, establish the error function of the first predicted value and the set temperature, and solve the optimized linear coefficient that minimizes the error function; obtain a set of optimized linear coefficients at different set ambient temperatures, and establish a second fitting model with set ambient temperature and optimized linear coefficients; solve the fitting parameters in the second fitting model by the least squares method; obtain the fitting function of the linear correction coefficient and the actual ambient temperature based on the fitting parameters and the second fitting model, and generate the linear correction coefficient based on the real-time ambient temperature of the air-conditioned room and the fitting function.

3. The air conditioning device according to claim 2, characterized in that: The first fitting model is a linear fitting model, and the second fitting model is a quadratic polynomial model.

4. The air conditioning device according to any one of claims 1 to 3, characterized in that: The detection areas of the plurality of area sensors are respectively distributed concentrically with the controlled field of view, and the detection ranges of the plurality of area sensors cover the controlled field of view; The closer the detection area of ​​the area sensor where a person is detected is to the center of the controlled field of view, the higher the human body temperature compensation value; The farther the detection area of ​​the area sensor where a person is detected is from the center of the controlled field of view, the lower the human body temperature compensation value.

5. The air conditioning device according to claim 4, characterized in that: When a plurality of area sensors detect a person at the same time, a corresponding human body temperature compensation value is called based on a detection area position of one of the area sensors that detects the person and is relatively far from the controlled field of view.

6. 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; Also includes: a system correction unit configured to call a linear correction coefficient corresponding to the ambient temperature of the air-conditioned room based on the ambient temperature of the air-conditioned room, and use the linear correction coefficient to correct the ground temperature detected by the thermopile sensor to obtain a system-corrected ground temperature; and A control unit is configured to control the operation of an actuator in at least one refrigeration cycle or estimate whether the air conditioning device has a fault based on the system corrected floor temperature.

7. The air conditioning device according to claim 6, characterized in that: Also includes: a generating unit configured to detect a black body radiation source with different set radiation temperatures using the thermopile sensor at a 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 an original linear coefficient; The test temperature and the original linear coefficient are substituted into the first fitting model to calculate the first predicted value, an error function between the first predicted value and the set temperature is established, and the optimized linear coefficient that minimizes the error function is solved; a set of optimized linear coefficients are obtained respectively at different set ambient temperatures, a second fitting model with set ambient temperatures and optimized linear coefficients is established, the fitting parameters in the second fitting model are solved by the least squares method, the fitting function of the linear correction coefficient and the actual ambient temperature is obtained based on the fitting parameters and the second fitting model, and the linear correction coefficient is generated based on the real-time ambient temperature of the air-conditioned room and the fitting function.

8. 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 further includes: a plurality of area sensors, wherein the plurality of area sensors are configured to detect whether there are people in different detection areas in the controlled field of view; Also includes: a human body temperature compensation unit configured to call a human body temperature compensation value corresponding to the position of the detection area based on a detection area where a person is present, and use the human body temperature compensation value to correct the ground temperature detected by the thermopile sensor to obtain a human body compensation temperature; and The control unit is configured to use the human body compensation temperature as the floor temperature to control the operation of an execution component in at least one refrigeration cycle or to estimate whether the air conditioning device has a fault.

9. The air conditioning device according to claim 8, characterized in that: The detection areas of the plurality of area sensors are respectively distributed concentrically with the controlled field of view, and the detection ranges of the plurality of area sensors cover the controlled field of view; The closer the detection area of ​​the area sensor where a person is detected is to the center of the controlled field of view, the higher the human body compensation temperature; The farther the detection area of ​​the area sensor where a person is detected is from the center of the controlled field of view, the lower the human body compensation temperature.

10. The air conditioning device according to claim 9, characterized in that: When a plurality of area sensors detect a person at the same time, the corresponding human body compensation temperature is called based on the position of the detection area of ​​one of the area sensors that detects the person and is relatively far away from the controlled field of view.

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