Air conditioning system and control method thereof

Abstract

This application provides an air conditioning system and its control method to improve the accuracy of the human sensing function in the air conditioning system. The air conditioning system includes: a refrigerant circulation loop; an indoor unit; an outdoor unit; an ultra-wideband (UWB) pulse transceiver assembly; and a controller configured to: upon receiving a control command to activate the human sensing function, and after receiving a first UWB pulse signal sent by a terminal via the UWB pulse transceiver assembly, determine first angle information based on the first UWB pulse signal; acquire the distance between the indoor unit and a UWB base station and a second azimuth angle of the UWB base station; determine the distance between the indoor unit and the terminal based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station; and adjust the angle of the air guide vane based on the first angle information and the distance between the indoor unit and the terminal to realize the human sensing function.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an air conditioning system and its control method. Background Technology

[0002] With societal development, air conditioners are becoming increasingly intelligent, and the human-sensing function, which detects the location of a person, is one such intelligent feature. Current human-sensing functions in air conditioners typically utilize infrared or ultrasonic sensors. However, infrared sensors are more prone to detecting brighter surfaces in the dark, making the detection results susceptible to environmental interference. Ultrasonic sensors detect objects by emitting ultrasonic waves and measuring their return time, but the results are also easily affected by environmental factors. Therefore, improving the accuracy of human-sensing detection results in air conditioning systems is a pressing issue that needs to be addressed. Summary of the Invention

[0003] This application provides an air conditioning system and its control method to improve the accuracy of human sensory function detection results of the air conditioning system.

[0004] In a first aspect, embodiments of this application provide an air conditioning system, including:

[0005] The refrigerant circulation loop allows the refrigerant to circulate within the compressor, condenser, and evaporator.

[0006] Indoor unit, including air guide plate;

[0007] Outdoor unit;

[0008] Also includes:

[0009] Ultra-wideband (UWB) pulse transceiver unit, used to receive and transmit UWB pulse signals;

[0010] The controller is configured as follows:

[0011] After receiving a control command to activate the human sensing function, and after receiving a first UWB pulse signal sent by the terminal through the UWB pulse transceiver component, the first angle information is determined based on the first UWB pulse signal; wherein, the first angle information includes the first azimuth angle of the terminal relative to the indoor unit and the pitch angle of the terminal relative to the indoor unit.

[0012] Obtain the distance between the indoor unit and the UWB base station, as well as the second azimuth angle of the UWB base station;

[0013] Based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station, the distance between the indoor unit and the terminal is determined; wherein, the second azimuth angle is the azimuth angle of the terminal relative to the UWB base station;

[0014] Based on the first angle information and the distance between the indoor unit and the terminal, adjust the angle of the air guide plate to achieve the human sensing function.

[0015] The embodiments of this application bring at least the following beneficial effects: The air conditioning system provided in this application embodiment, through a UWB pulse transceiver component, transmits UWB pulse signals to both the terminal and the UWB base station. Based on the UWB pulse signals, the first angle information of the terminal relative to the indoor unit and the distance between the terminal and the indoor unit are determined, and the position of the terminal is taken as the user's position to realize the human sensing function. It should be understood that UWB pulse signals have the characteristics of high precision and strong penetration, are not easily affected by the environment, and can provide more accurate detection results for the human sensing function. Furthermore, the first angle information also includes the pitch angle of the terminal relative to the indoor unit, which can be understood as the height information of the terminal relative to the indoor unit. Thus, when realizing the human sensing function of the air conditioning system, not only the relative position of the terminal and the indoor unit on the plane is considered, but also the height, thereby improving the accuracy of the relative position of the terminal and the indoor unit, and thus improving the accuracy of the human sensing function detection results of the air conditioning system.

[0016] This means that the height information of the terminal relative to the indoor unit can be obtained, further improving the accuracy of the human presence detection results. Thus, the accuracy of the human presence detection results of the air conditioning system can be improved.

[0017] In some embodiments, the distance between the indoor unit and the terminal is obtained by the following formula:

[0018]

[0019] Where D represents the distance between the indoor unit and the terminal, L represents the distance between the indoor unit and the UWB base station, α1 represents the first azimuth angle of the terminal relative to the indoor unit, α2 represents the second azimuth angle of the terminal relative to the UWB base station, and β1 represents the pitch angle of the terminal relative to the indoor unit.

[0020] In some embodiments, the controller is configured to adjust the angle of the air guide plate according to the first angle information and the distance between the indoor unit and the terminal. Specifically, it is configured to: obtain the current air supply distance of the indoor unit; determine the relative position of the terminal relative to the indoor unit according to the first angle information and the distance between the indoor unit and the terminal; when the human detection function is in the wind avoidance mode, and the distance between the indoor unit and the terminal is less than the air supply distance, adjust the angle of the air guide plate to a first preset angle so that the air outlet direction of the indoor unit avoids the relative position; or, when the human detection function is in the wind blowing mode, and the distance between the indoor unit and the terminal is less than the air supply distance, adjust the angle of the air guide plate according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

[0021] In some embodiments, the controller is configured to acquire the distance between the indoor unit and the UWB base station, specifically configured to: send a second UWB pulse signal to the UWB base station and record a first transmission time of the second UWB pulse signal; receive a first response signal sent by the UWB base station and record a first reception time of the first response signal; wherein the first response signal includes a second reception time of the UWB base station receiving the second UWB pulse signal and a second transmission time of the first response signal; send a third UWB pulse signal to the UWB base station and record a third transmission time of the third UWB pulse signal; receive a second response signal of the third UWB pulse signal; wherein the second response signal includes a third reception time of the UWB base station receiving the third UWB pulse signal.

[0022] The propagation time of the UWB pulse signal is determined based on the first cycle duration, the first delay time, the second cycle duration, and the second delay time; wherein, the first cycle duration is the time difference between the first reception time and the first transmission time, the first delay time is the time difference between the second transmission time and the second reception time, the second cycle duration is the time difference between the third reception time and the second transmission time, and the second delay time is the time difference between the third transmission time and the first reception time; the distance between the indoor unit and the UWB base station is determined based on the propagation time of the UWB pulse signal and the speed of light.

[0023] In some embodiments, the propagation time of the UWB pulse signal is obtained by the following formula:

[0024]

[0025] Among them, T prop T represents the propagation time of the UWB pulse signal. round1 T represents the duration of the first cycle. round2 T represents the duration of the second cycle. reply1 T represents the first delay time. reply2 This represents the second delay time.

[0026] In some embodiments, the controller is configured to, upon receiving a control command for instructing the activation of the human sensing function, specifically, receive the control command for instructing the activation of the human sensing function from the terminal via a cloud server.

[0027] In some embodiments, when the controller is configured to determine the first angle information based on the first UWB pulse signal, it is specifically configured to: amplify and filter the first UWB pulse signal to obtain a processed first UWB pulse signal; convert the processed first UWB pulse signal into a digital signal, and sample and quantize it to obtain discrete signal data; perform digital signal processing on the discrete signal data to obtain the spectrum and related characteristic parameters of the first UWB pulse signal; wherein the related characteristic parameters include: the phase of the first UWB pulse signal and the wavelength of the first UWB pulse signal; and determine the first angle information based on the spectrum and related characteristic parameters of the first UWB pulse signal.

[0028] Secondly, embodiments of this application provide a control method for an air conditioning system. The method includes: upon receiving a control command to instruct the activation of a human detection function; and upon receiving a first UWB pulse signal sent by a terminal, determining first angle information based on the first UWB pulse signal; wherein the first angle information includes a first azimuth angle of the terminal relative to an indoor unit and a pitch angle of the terminal relative to the indoor unit; acquiring the distance between the indoor unit and a UWB base station and a second azimuth angle of the UWB base station; determining the distance between the indoor unit and the terminal based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station; wherein the second azimuth angle is the azimuth angle of the terminal relative to the UWB base station; and adjusting the angle of the air guide vane based on the first angle information and the distance between the indoor unit and the terminal to realize the human detection function.

[0029] In some embodiments, adjusting the angle of the air guide plate according to the first angle information and the distance between the indoor unit and the terminal includes: obtaining the current air supply distance of the indoor unit; determining the relative position of the terminal relative to the indoor unit according to the first angle information and the distance between the indoor unit and the terminal; when the human detection function is in the wind avoidance mode, adjusting the angle of the air guide plate to a first preset angle when the distance between the indoor unit and the terminal is less than the air supply distance, so that the air outlet direction of the indoor unit avoids the relative position; or, when the human detection function is in the wind blowing mode, adjusting the angle of the air guide plate according to the relative position when the distance between the indoor unit and the terminal is less than the air supply distance, so that the air outlet direction of the indoor unit reaches the relative position.

[0030] In some embodiments, obtaining the distance between the indoor unit and the UWB base station includes: sending a second UWB pulse signal to the UWB base station and recording a first transmission time of the second UWB pulse signal; receiving a first response signal sent by the UWB base station and recording a first reception time of the first response signal; wherein the first response signal includes a second reception time of the UWB base station receiving the second UWB pulse signal and a second transmission time of the first response signal; sending a third UWB pulse signal to the UWB base station and recording a third transmission time of the third UWB pulse signal; and receiving a second response signal of the third UWB pulse signal; wherein the second response signal includes a third reception time of the UWB base station receiving the third UWB pulse signal.

[0031] The propagation time of the UWB pulse signal is determined based on the first cycle duration, the first delay time, the second cycle duration, and the second delay time; wherein, the first cycle duration is the time difference between the first reception time and the first transmission time, the first delay time is the time difference between the second transmission time and the second reception time, the second cycle duration is the time difference between the third reception time and the second transmission time, and the second delay time is the time difference between the third transmission time and the first reception time; the distance between the indoor unit and the UWB base station is determined based on the propagation time of the UWB pulse signal and the speed of light. Attached Figure Description

[0032] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0033] Figure 1 This is a schematic diagram of the composition of an air conditioning system provided in an embodiment of this application;

[0034] Figure 2 This application provides a schematic diagram of the structure of an air conditioning system according to an embodiment of the present application.

[0035] Figure 3 A schematic diagram of the structure of a controller provided in an embodiment of this application;

[0036] Figure 4 A schematic diagram illustrating the interaction between the controller and the cloud server of an air conditioning system provided in this application embodiment;

[0037] Figure 5 A hardware configuration block diagram of an air conditioning system provided in an embodiment of this application;

[0038] Figure 6 A flowchart illustrating a control method for an air conditioning system provided in an embodiment of this application;

[0039] Figure 7This is a schematic diagram illustrating the information interaction between various devices provided in the embodiments of this application;

[0040] Figure 8 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application;

[0041] Figure 9 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application;

[0042] Figure 10 This is a schematic diagram of the signal transmission between the terminal and the UWB base station provided in an embodiment of this application;

[0043] Figure 11 This is a schematic diagram of positional relationships in a three-dimensional rectangular coordinate system provided in the embodiments of this application;

[0044] Figure 12 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application;

[0045] Figure 13 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application;

[0046] Figure 14 This is a schematic diagram of the overall flow of a control method for an air conditioning system provided in an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0051] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0052] As mentioned in the background above, the human detection function of existing air conditioning systems is usually implemented using infrared or ultrasonic sensors. However, both infrared and ultrasonic sensors are easily affected by the environment, resulting in inaccurate detection results regarding the location of a person.

[0053] Based on this, this application provides an air conditioning system that uses a UWB pulse transceiver component to send UWB pulse signals to and from a terminal and a UWB base station. The system determines a first angle information of the terminal relative to the indoor unit and the distance between the terminal and the indoor unit based on the UWB pulse signals, using the terminal's position as the user's position to achieve a human detection function. It should be understood that UWB pulse signals have high precision and strong penetration, are not easily affected by the environment, and can provide more accurate detection results for the human detection function. Furthermore, the first angle information also includes the pitch angle of the terminal relative to the indoor unit, which can be understood as the height information of the terminal relative to the indoor unit. Thus, when implementing the human detection function of the air conditioning system, not only the relative position of the terminal and the indoor unit on the plane is considered, but also the height, thereby improving the accuracy of the relative position of the terminal and the indoor unit and thus improving the accuracy of the human detection results of the air conditioning system. To further describe the solution of this application, an air conditioning system provided by an embodiment of this application is described in conjunction with the accompanying drawings.

[0054] Figure 1 This is a schematic diagram illustrating the composition of an air conditioning system according to an exemplary embodiment of this application. It should be noted that the air conditioning system involved in the embodiments of this application can be of different types, such as a conventional air conditioning system including one indoor unit and one outdoor unit, or a multi-split air conditioning system commonly known as a "one-to-many" system. All different types of air conditioning systems are based on... Figure 1The following diagram illustrates the composition of an air conditioning system. Figure 1 As shown, the air conditioning system 10 includes an indoor unit 11 and an outdoor unit 12.

[0055] Indoor unit 11, taking indoor unit 11 as an example of an indoor wall-mounted unit, is usually installed on an indoor wall. Another example is a floor-standing indoor unit.

[0056] In some embodiments, the indoor unit 11 has a baffle plate for guiding the direction of the air blown out by the indoor unit 11.

[0057] In some embodiments, the air guide plate includes a horizontal air guide plate and a vertical air guide plate.

[0058] Outdoor unit 12 is typically installed outdoors for heat exchange within the indoor environment. Additionally, in... Figure 1 In the diagram, outdoor unit 12 is shown as a dashed line because it is located on the opposite side of indoor unit 11, separated by a wall.

[0059] Figure 2 This is a schematic diagram of an air conditioning system. Figure 2 As shown, the air conditioning system includes: compressor 101, four-way valve 102, outdoor heat exchanger 103, indoor heat exchanger 104, oil separator 105, gas-liquid separator 106, liquid receiver 107, and controller 50 (not shown in the figure).

[0060] In some embodiments, compressor 101 is used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharge it to the condenser.

[0061] Optionally, compressor 101 may be a variable-capacity inverter compressor that performs inverter-based speed control.

[0062] In some embodiments, the four-way valve 102 is used to achieve mutual conversion between cooling and heating by changing the flow direction of refrigerant in the system piping.

[0063] In some embodiments, one end of the outdoor heat exchanger 103 is connected to a four-way valve 102, and the other end is connected to a liquid receiver 107. The outdoor heat exchanger 103 has a first inlet / outlet for allowing refrigerant to flow between the outdoor heat exchanger 103 and the four-way valve 102, and a second inlet / outlet for allowing refrigerant to flow between the outdoor heat exchanger 103 and the liquid receiver 107. The outdoor heat exchanger 103 facilitates heat exchange between a hot air cooler flowing in a heat transfer tube connected between the first and second inlets / outlets and outdoor air. In a refrigeration cycle, the outdoor heat exchanger 103 functions as a condenser. In a heating cycle, the outdoor heat exchanger 103 functions as an evaporator.

[0064] In some embodiments, one end of the indoor heat exchanger 104 is connected to a four-way valve 102, and the other end is connected to a liquid receiver 107. The outdoor heat exchanger 103 has a third inlet for allowing refrigerant to flow between the indoor heat exchanger 104 and the four-way valve 102, and a fourth inlet for allowing refrigerant to flow between the indoor heat exchanger 104 and the liquid receiver 107. The indoor heat exchanger 104 facilitates heat exchange between the refrigerant flowing in the heat transfer tube connected between the third and fourth inlets and the indoor air. In the refrigeration cycle, the indoor heat exchanger 104 functions as an evaporator. In the heating cycle, the indoor heat exchanger 104 functions as a condenser.

[0065] In some embodiments, the oil separator 105 is connected to the exhaust port of the compressor 101, and the oil separator 105 is used to separate the refrigerant discharged from the compressor 101 from the compressor oil.

[0066] Optionally, the oil separator 105 can be a filter-type oil separator. When the mixture of gaseous refrigerant discharged from the compressor 101 and compressor oil enters the oil separator 105, the compressor oil mixed in the gaseous refrigerant can be separated by increasing the flow cross-section, reducing the gas flow rate, changing the airflow direction, and increasing the filtration of the metal wire mesh.

[0067] In some embodiments, the gas-liquid separator 106 comprises a cylinder, a cyclone separator, a defoaming screen, and a drain valve, and is used to filter moisture in the air.

[0068] In some embodiments, the liquid receiver 107 includes a cylinder, an inlet pipe, an outlet pipe, and a filter screen to prevent refrigerant from flowing into the compressor and causing liquid slugging.

[0069] In the embodiments shown in this application, the controller 50 is a device that generates operation control signals based on instruction opcodes and timing signals to instruct the air conditioning system to execute control commands. The controller can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller can also be other devices with processing functions, such as circuits, devices, or software modules; this application does not impose any limitations on these aspects.

[0070] In addition, the controller 50 can be used to control the operation of various components inside the air conditioning system 10 so that the various components of the air conditioning system 10 can operate to achieve the predetermined functions of the air conditioning system.

[0071] Reference Figure 3 This is a schematic diagram of the structure of a controller provided in an embodiment of this application. Figure 3 As shown, the controller 50 includes an outdoor control module 501 and an indoor control module 502. The outdoor control module 501 includes a first memory 5011, and the indoor control module 502 includes a second memory 5021. The indoor control module 502 is connected to the outdoor control module 501 via wired or wireless communication. The outdoor control module 501 can be installed in the outdoor unit 12 or independently of the outdoor unit 12, and is used to control the outdoor unit 12 to perform related operations. The indoor control module 502 can be installed in the indoor unit 11 or independently of the indoor unit 11, and is used to control the components of the indoor unit 11 to perform related operations. It should be understood that the above module division is only functional; the outdoor control module 501 and the indoor control module 502 can also be integrated into one module. The first memory 5011 and the second memory 5021 can also be integrated into one memory.

[0072] In some embodiments, the first memory 5011 is used to store applications and data related to the outdoor unit 12. The outdoor control module 501 executes various functions and data processing of the air conditioning system by running the applications and data stored in the memory 5011. The first memory 5011 mainly includes a program storage area and a data storage area. The program storage area can store the operating system and applications required for at least one function; the data storage area can store data created based on the use of the air conditioning system. In addition, the first memory 5011 may include high-speed random access memory and may also include non-volatile memory, such as disk storage devices, flash memory devices, or other volatile solid-state storage devices.

[0073] In some embodiments, the second memory 5021 is used to store applications and data related to the indoor unit 11. The indoor control module 502 executes various functions and data processing of the air conditioning system by running the applications and data stored in the memory 5021. The second memory 5021 mainly includes a program storage area and a data storage area. The program storage area can store the operating system and applications required for at least one function; the data storage area can store data created based on the use of the air conditioning system.

[0074] In some embodiments, the outdoor control module 501 has a communication connection with the outdoor unit 12, and is used to control the outdoor unit to perform relevant operations according to user instructions or system default instructions. Optionally, the outdoor control module 501 can also obtain the outdoor ambient temperature according to user instructions or system instructions, and store the obtained outdoor ambient temperature in the first memory 5011. Optionally, the outdoor control module 501 can also control the rotation of the four-way valve 102 in the outdoor unit 12 according to the air conditioning operation mode selected by the user, so as to realize the selection of cooling or heating mode.

[0075] In some embodiments, the indoor control module 502 has a communication connection with the indoor unit 11, and is used to control the indoor unit 11 to perform relevant operations according to user instructions or system default instructions.

[0076] In some embodiments, the air conditioning system 10 also includes a communicator connected to the controller 50 for establishing communication connections with other network entities. For example, an RF module can be used for signal reception and transmission; specifically, it can send received information to the controller 50 for processing and also transmit signals generated by the controller. Typically, the RF circuit may include, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier (LNA), a duplexer, etc.

[0077] For example, the air conditioning system 10 can receive control commands sent by the terminal device through a communicator, and perform corresponding processing according to the control commands to realize the interaction between the user and the air conditioning system 10.

[0078] In some embodiments, the communicator is a component used to communicate with external devices or servers according to various communication protocol types. For example, the communicator may include at least one of the following: a Wi-Fi module, a Bluetooth module, a wired Ethernet module, a near-field communication (NFC) module, or other network communication protocol chips or NFC protocol chips, as well as an infrared receiver. The communicator can be used to communicate with other devices (user mobile terminals) or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.).

[0079] Figure 4 This is a schematic diagram illustrating the interaction between a controller of an air conditioning system and a cloud server 500 according to an exemplary embodiment of this application.

[0080] like Figure 4As shown, the cloud server 500 can establish a communication connection with the controller 50 of the air conditioning system. Exemplarily, any known network communication protocol can be used to establish the communication connection. The aforementioned network communication protocol can be various wired or wireless communication protocols, such as Ethernet, Universal Serial Bus (USB), FireWire, any cellular network communication protocol (such as 3G / 4G / 5G), Bluetooth, Wireless Fidelity (Wi-Fi), NFC, or any other suitable communication protocol. The aforementioned communication connection can be a Bluetooth connection, NFC, Zigbee, Wireless Fidelity (Wi-Fi), etc. This application embodiment does not impose specific limitations in this regard.

[0081] Reference Figure 5 This is a hardware configuration block diagram of an air conditioning system provided in an embodiment of this application. The air conditioning system 10 may further include a UWB pulse transceiver component 108.

[0082] In some embodiments, the UWB pulse transceiver component 108 is disposed in the indoor unit 11 for receiving and transmitting UWB pulse signals.

[0083] In some embodiments, the controller 50 is configured to: after receiving a control command for instructing the activation of the human sensing function, and after receiving a first UWB pulse signal sent by the terminal through the UWB pulse transceiver component, determine first angle information based on the first UWB pulse signal; wherein the first angle information includes a first azimuth angle of the terminal relative to the indoor unit and a pitch angle of the terminal relative to the indoor unit.

[0084] Obtain the distance between the indoor unit and the UWB base station, as well as the second azimuth angle of the UWB base station;

[0085] Based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station, the distance between the indoor unit and the terminal is determined; wherein, the second azimuth angle is the azimuth angle of the terminal relative to the UWB base station;

[0086] Based on the first angle information and the distance between the indoor unit and the terminal, adjust the angle of the air guide plate to achieve the human sensing function.

[0087] In some embodiments, the controller 50 is configured to adjust the angle of the air guide vane based on the first angle information and the distance between the indoor unit and the terminal, specifically configured as follows:

[0088] Get the current air delivery distance of the indoor unit;

[0089] Based on the first angle information and the distance between the indoor unit and the terminal, determine the relative position of the terminal with respect to the indoor unit;

[0090] When the human detection function is in wind avoidance mode, if the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate will be adjusted to a first preset angle so that the air outlet direction of the indoor unit avoids the relative position; or,

[0091] When the human sensing function is in the wind blowing mode, if the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

[0092] In some embodiments, the controller 50 is configured to obtain the distance between the indoor unit and the UWB base station, specifically configured as follows:

[0093] Send a second UWB pulse signal to the UWB base station and record the first transmission time of the second UWB pulse signal;

[0094] The system receives a first response signal sent by a UWB base station and records the first reception time of receiving the first response signal; wherein the first response signal includes the second reception time of the UWB base station receiving the second UWB pulse signal and the second transmission time of sending the first response signal.

[0095] Send a third UWB pulse signal to the UWB base station and record the third transmission time of the third UWB pulse signal;

[0096] A second response signal received from the third UWB pulse signal; wherein the second response signal includes the third reception time of the UWB base station receiving the third UWB pulse signal;

[0097] The propagation time of the UWB pulse signal is determined based on the first cycle duration, the first delay time, the second cycle duration, and the second delay time; wherein, the first cycle duration is the time difference between the first reception time and the first transmission time, the first delay time is the time difference between the second transmission time and the second reception time, the second cycle duration is the time difference between the third reception time and the second transmission time, and the second delay time is the time difference between the third transmission time and the first reception time.

[0098] The distance between the indoor unit and the UWB base station is determined based on the propagation time of the UWB pulse signal and the speed of light.

[0099] In some embodiments, the controller 50 is configured to, upon receiving a control command instructing the activation of the human sensing function, specifically configure as follows:

[0100] After receiving the control command from the terminal to activate the human sensing function via the cloud server.

[0101] In some embodiments, when the controller 50 is configured to determine the first angle information based on the first UWB pulse signal, it is specifically configured as follows:

[0102] The first UWB pulse signal is amplified and filtered to obtain the processed first UWB pulse signal.

[0103] The processed first UWB pulse signal is converted into a digital signal, and then sampled and quantized to obtain discrete signal data;

[0104] Discrete signal data is subjected to digital signal processing to obtain the spectrum of the first UWB pulse signal and the relevant characteristic parameters of the first UWB pulse signal; wherein, the relevant characteristic parameters include: the phase of the first UWB pulse signal and the wavelength of the first UWB pulse signal;

[0105] The first angle information is determined based on the spectrum of the first UWB pulse signal and its relevant characteristic parameters.

[0106] Those skilled in the art will understand that the hardware structure of the air conditioning system provided in the embodiments of this application does not constitute a limitation on the air conditioning system. The air conditioning system may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0107] The embodiments provided in this application will now be described in detail with reference to the accompanying drawings.

[0108] like Figure 6 As shown in the figure, this application embodiment provides a control method for an air conditioning system. The method is applied to a controller, which can be the controller 50 of the air conditioning system 10 described above. The method includes the following steps:

[0109] S101. After receiving a control command to indicate the activation of the human sensing function, and after receiving a first UWB pulse signal sent by the terminal, determine the first angle information based on the first UWB pulse signal.

[0110] The first angle information includes the first azimuth angle of the terminal relative to the indoor unit and the pitch angle of the terminal relative to the indoor unit.

[0111] In some embodiments, when a user needs the air from the indoor unit to blow directly towards or away from them, the user activates the human-sensing function of the air conditioning system. The human-sensing function directs the airflow from the air conditioner towards or away from the user's location. Typically, the terminal is carried by the user, and the terminal's location can be used as the user's location, meaning the airflow from the air conditioner should be directed towards or away from the terminal's location.

[0112] Optionally, the user can send information to the cloud via the terminal to instruct the activation of the human sensing function. After receiving the information, the cloud sends a control command to the air conditioning system to instruct the activation of the human sensing function.

[0113] Figure 7 This is a diagram illustrating the information interaction between various devices. For example... Figure 7 As shown, the user sends a control command to the cloud via the terminal to instruct the indoor unit to activate the human detection function. Upon receiving the control command, the cloud forwards it to the indoor unit. Then, the terminal sends UWB pulse signals to both the indoor unit and the UWB base station. The indoor unit and the UWB base station can exchange UWB pulse signals.

[0114] In some embodiments, the terminal may periodically send UWB pulse signals to the indoor unit and the UWB base station to determine the first angle information of the terminal relative to the indoor unit and the second azimuth angle of the terminal relative to the UWB base station.

[0115] For example, the period can be 30 seconds, that is, the terminal sends a UWB pulse signal to the indoor unit and the UWB base station every 30 seconds.

[0116] Upon receiving a control command to activate the human detection function, the indoor unit can receive a first UWB pulse signal sent by the Chinese side and determine a first angle based on the first UWB pulse signal to determine the position of the terminal relative to the indoor unit.

[0117] In some embodiments, the terminal may be a smart device with UWB transceiver capabilities, such as a mobile phone with UWB transceiver capabilities.

[0118] In some embodiments, such as Figure 8 As shown, determining the first angle information based on the first UWB pulse signal can be specifically implemented through the following steps:

[0119] S1011. The first UWB pulse signal is amplified and filtered to obtain the processed first UWB pulse signal.

[0120] In some embodiments, noise exists in the signal, and it is necessary to remove the noise from the original signal by amplifying and filtering it.

[0121] S1012. Convert the processed first UWB pulse signal into a digital signal, and sample and quantize it to obtain discrete signal data.

[0122] In some embodiments, the pulse signal contains high and low levels, which correspond to 0 and 1 in a digital signal. This application does not limit the above correspondence. For example, a high level in the pulse signal can correspond to 1 in a digital signal, and a low level in the pulse signal can correspond to 0 in a digital signal; or, a high level in the pulse signal can correspond to 0 in a digital signal, and a low level in the pulse signal can correspond to 1 in a digital signal.

[0123] In some embodiments, a multi-bit binary code, i.e. a digital signal, can be obtained based on the high and low levels in the first pulse signal and the correspondence between the high and low levels and the digital signal.

[0124] S1013. Perform digital signal processing on the discrete signal data to obtain the spectrum of the first UWB pulse signal and the relevant characteristic parameters of the first UWB pulse signal.

[0125] The relevant characteristic parameters of the first UWB pulse signal include the phase of the first UWB pulse signal and the wavelength of the first UWB pulse signal.

[0126] In some embodiments, digital signal processing may be Fourier transform.

[0127] The Fourier transform is a linear integral transform that can perform spectral analysis on signals, converting difficult-to-process time-domain signals into easily analyzable frequency-domain signals. The principle of the Fourier transform states that any continuously measured time series or signal can be represented as an infinite superposition of sinusoidal signals of different frequencies. Based on this principle, Fourier transform algorithms utilize directly measured raw signals, calculating the frequency, amplitude, and phase of the signal through accumulation.

[0128] S1014. Determine the first angle information based on the spectrum of the first UWB pulse signal and the relevant characteristic parameters of the first UWB pulse signal.

[0129] In some embodiments, the first angle information can be determined by the spectrum of the first UWB pulse signal and its related characteristic parameters. For example, the first angle information can be determined by the phase difference and wavelength of the first UWB pulse signal.

[0130] S102. Obtain the distance between the indoor unit and the UWB base station, as well as the second azimuth angle of the UWB base station.

[0131] The second azimuth angle is the azimuth angle of the terminal relative to the UWB base station.

[0132] In some embodiments, after the terminal sends information to the cloud, it also sends a UWB pulse signal to the UWB base station. After the UWB base station receives the UWB pulse signal, it can determine the second azimuth angle of the UWB base station through the UWB pulse signal. The method for determining the second azimuth angle can refer to the method described in step S101 above, and will not be repeated here.

[0133] In some embodiments, such as Figure 9 As shown, obtaining the distance between the indoor unit and the UWB base station can be achieved through the following steps:

[0134] S1021. Send a second UWB pulse signal to the UWB base station and record the first transmission time of the second UWB pulse signal. Receive a first response signal from the UWB base station and record the first reception time of the first response signal. Send a third UWB pulse signal to the UWB base station and record the third transmission time of the third UWB pulse signal. Receive a second response signal for the third UWB pulse signal.

[0135] The first response signal includes the second reception time of the UWB base station receiving the second UWB pulse signal and the second transmission time of sending the first response signal. The second response signal includes the third reception time of the UWB base station receiving the third UWB pulse signal.

[0136] Figure 10 This is a schematic diagram illustrating signal transmission between the terminal and the UWB base station. In the diagram, T... prop T represents the propagation time of the UWB pulse signal. round1 T represents the duration of the first period. round2 T represents the duration of the second period. reply1 T represents the first delay time. reply2 This represents the second delay time.

[0137] like Figure 10 As shown, the indoor unit sends a second UWB pulse signal to the UWB base station. After the propagation time T of the UWB pulse signal... prop Then, the UWB base station receives the second UWB pulse signal. After the first delay time T... reply1 Afterwards, the UWB base station sends the first response signal to the indoor unit. The propagation time T of the UWB pulse signal is then... prop After that, the indoor unit receives the first response signal, and after the second delay time T... reply2 Send a third UWB pulse signal to the UWB base station.

[0138] In some embodiments, after receiving the third UWB pulse signal, the UWB base station will also send a second response signal to transmit the time when the UWB base station received the third pulse signal to the indoor unit, so that the indoor unit can obtain the propagation time of the UWB pulse signal and thus determine the distance between the indoor unit and the UWB base station.

[0139] In other embodiments, after receiving the third UWB pulse signal, the UWB base station can also obtain the propagation time of the UWB pulse signal based on the time difference between the signals, thereby determining the distance between the indoor unit and the UWB base station, and then sending the distance between the indoor unit and the UWB base station to the indoor unit.

[0140] S1022. Determine the propagation time of the UWB pulse signal based on the first cycle duration, the first delay time, the second cycle duration, and the second delay time.

[0141] The first cycle duration is the time difference between the first receiving time and the first sending time; the first delay time is the time difference between the second sending time and the second receiving time; the second cycle duration is the time difference between the third receiving time and the second sending time; and the second delay time is the time difference between the third sending time and the first receiving time.

[0142] In some embodiments, the propagation time of the UWB pulse signal can be obtained by the following formula:

[0143]

[0144] Among them, T prop T represents the propagation time of the UWB pulse signal. round1 T represents the duration of the first period. round2 T represents the duration of the second period. reply1 T represents the first delay time. reply2 This represents the second delay time.

[0145] S1023. Determine the distance between the indoor unit and the UWB base station based on the propagation time of the UWB pulse signal and the speed of light.

[0146] It should be understood that the speed of the pulse signal is the speed of light. The distance between the indoor unit and the UWB base station can be obtained from the propagation time of the UWB pulse signal and the speed of light obtained in step S1022.

[0147] S103. Determine the distance between the indoor unit and the terminal based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station.

[0148] In some embodiments, such as Figure 11As shown, D represents the distance between the indoor unit and the terminal, L represents the distance between the indoor unit and the UWB base station, α1 represents the first azimuth angle of the terminal relative to the indoor unit, α2 represents the second azimuth angle of the terminal relative to the UWB base station, and β1 represents the pitch angle of the terminal relative to the indoor unit.

[0149] like Figure 11 As shown, a three-dimensional Cartesian coordinate system can be established with the indoor unit as the origin. The position of the terminal in the three-dimensional Cartesian coordinate system is projected onto the plane xoy. The position of the terminal projected onto the plane xoy can be called the projection point. It should be understood that the indoor unit, the UWB base station, and the projection point form a triangle on the plane xoy. Given the distance between the indoor unit and the UWB base station, the azimuth angle of the terminal relative to the indoor unit, and the azimuth angle of the terminal relative to the UWB base station, the distance between the indoor unit and the projection point can be calculated, and thus the distance between the indoor unit and the terminal can be obtained.

[0150] In some embodiments, the distance between the indoor unit and the terminal can be obtained by the following formula:

[0151]

[0152] Where D represents the distance between the indoor unit and the terminal, L represents the distance between the indoor unit and the UWB base station, α1 represents the first azimuth angle of the terminal relative to the indoor unit, α2 represents the second azimuth angle of the terminal relative to the UWB base station, and β1 represents the pitch angle of the terminal relative to the indoor unit.

[0153] S104. Based on the first angle information and the distance between the indoor unit and the terminal, adjust the angle of the air guide plate to achieve the human sensing function.

[0154] In some embodiments, such as Figure 12 As shown, adjusting the angle of the air guide plate based on the first angle information and the distance between the indoor unit and the terminal can be achieved through the following steps:

[0155] S1041. Obtain the current air supply distance of the indoor unit.

[0156] In some embodiments, the air delivery distance of the indoor unit varies under different circumstances, so it is necessary to obtain the current air delivery distance of the indoor unit to determine whether the indoor unit can reach the user.

[0157] In some embodiments, the indoor unit has different operating speeds, each with a corresponding air delivery distance.

[0158] For example, assume the indoor unit has low, medium, and high settings. The low setting corresponds to an air delivery distance of 0.5 meters (m), the medium setting corresponds to an air delivery distance of 1 meter, and the high setting corresponds to an air delivery distance of 1.5 meters. When the indoor unit is running at the medium setting, the current air delivery distance is 1 meter.

[0159] S1042. Based on the first angle information and the distance between the indoor unit and the terminal, determine the relative position of the terminal relative to the indoor unit.

[0160] It should be understood that, given the azimuth angle, pitch angle, and distance between the terminal and the indoor unit, the position of the terminal relative to the indoor unit can be determined.

[0161] For example, such as Figure 11 As shown, given the azimuth angle α1 of the terminal relative to the indoor unit, the pitch angle β1 of the terminal relative to the indoor unit, and the distance D between the indoor unit and the terminal, the relative position of the terminal relative to the indoor unit can be obtained.

[0162] S1043. When the human sensing function is in the wind avoidance mode, if the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted to the first preset angle so that the air outlet direction of the indoor unit avoids the relative position.

[0163] In some embodiments, when the human sensing function is in the wind avoidance mode, it is necessary to adjust the air outlet direction to avoid the wind blowing directly on the user. That is, the angle of the air guide plate is adjusted to a first preset angle so that the air outlet direction of the indoor unit avoids the relative position.

[0164] It should be understood that when the distance between the indoor unit and the terminal is less than the air supply distance, it means that the air may reach the relative position, and the air guide plate needs to be adjusted to the first preset angle so that the air outlet direction of the indoor unit avoids the relative position.

[0165] In other embodiments, when the distance between the indoor unit and the terminal is greater than the air supply distance, it means that the phase position is beyond the air supply distance that the wind can reach, and the indoor unit does not need to be adjusted and continues to operate.

[0166] In some embodiments, when the distance between the indoor unit and the terminal is less than the air supply distance, the air outlet direction of the indoor unit can be determined to avoid the relative position based on the relative position of the terminal relative to the indoor unit and the current angle of the air guide plate.

[0167] If the air outlet direction of the indoor unit can avoid the relative position, the indoor unit does not need to be adjusted and can continue to operate.

[0168] If the air outlet direction of the indoor unit cannot avoid the relative position, adjust the angle of the air guide plate to the first preset angle.

[0169] In some embodiments, the first preset angle is determined based on first angle information.

[0170] For example, after obtaining the first angle information, a preset angle can be obtained based on the first azimuth angle and the preset azimuth angle correction angle, wherein the preset azimuth angle correction angle can be preset at the factory.

[0171] In some embodiments, the first preset angle includes the horizontal preset angle of the horizontal wind guide plate and the vertical angle of the vertical wind baffle plate.

[0172] In some embodiments, the air guide plate has different settings, and different settings correspond to different baffle angles. The controller can adjust the settings of the air guide plate to make the air outlet direction of the indoor unit avoid the relative position.

[0173] In other embodiments, such as Figure 13 As shown, after step S1042, the following steps are also included:

[0174] S1044. When the human sensing function is in the wind blowing mode, if the distance between the indoor unit and the terminal is less than the air supply distance, adjust the angle of the air guide plate according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

[0175] In some embodiments, when the human sensing function is in the wind blowing mode, it is necessary to adjust the air outlet direction so that the air blows directly on the user. That is, adjust the angle of the air guide plate according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

[0176] It should be understood that when the distance between the indoor unit and the terminal is less than the air supply distance, it means that the air can reach the relative position. At this time, the angle of the air guide plate is adjusted according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

[0177] In other embodiments, when the distance between the indoor unit and the terminal is greater than the air supply distance, it means that the phase position is beyond the air supply distance that the wind can reach, and the indoor unit does not need to be adjusted and continues to operate.

[0178] In some embodiments, the user may move around indoors, and the controller needs to detect the position of the terminal and the indoor unit in real time and adjust the angle of the air guide plate so that the airflow direction changes according to the change in relative position.

[0179] The air conditioning system control method provided in this application provides at least the following beneficial effects: It involves exchanging UWB pulse signals between a terminal and a UWB base station. Based on the UWB pulse signals, a first angle information of the terminal relative to the indoor unit and the distance between the terminal and the indoor unit are determined. The terminal's position is then used as the user's position to achieve a human detection function. It should be understood that UWB pulse signals have high precision and strong penetration, are not easily affected by the environment, and can provide more accurate detection results for the human detection function. Furthermore, the first angle information also includes the pitch angle of the terminal relative to the indoor unit, which can be understood as the height information of the terminal relative to the indoor unit. Thus, when implementing the human detection function of the air conditioning system, not only the relative position of the terminal and the indoor unit on the plane is considered, but also the height, thereby improving the accuracy of the relative position of the terminal and the indoor unit and thus improving the accuracy of the human detection results of the air conditioning system.

[0180] The following example illustrates a control method for an air conditioning system provided in this application. Figure 14 The diagram shown is an overall flowchart of a control method for an air conditioning system provided in an embodiment of this application.

[0181] After receiving a control command to indicate the activation of the human sensing function, and after receiving the first UWB pulse signal sent by the terminal through the UWB pulse transceiver component, the first angle information is determined based on the first UWB pulse signal.

[0182] Send a second UWB pulse signal to the UWB base station and record the first transmission time of the second UWB pulse signal.

[0183] The system receives the first response signal sent by the UWB base station and records the first reception time of the first response signal.

[0184] Send a third UWB pulse signal to the UWB base station and record the third transmission time of the third UWB pulse signal.

[0185] The second response signal received from the third UWB pulse signal.

[0186] The propagation time of the UWB pulse signal is determined based on the duration of the first cycle, the first delay time, the duration of the second cycle, and the second delay time.

[0187] The distance between the indoor unit and the UWB base station is determined based on the propagation time of the UWB pulse signal and the speed of light.

[0188] Obtain the second azimuth angle of the UWB base station.

[0189] The distance between the indoor unit and the terminal is determined based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station.

[0190] Get the current air delivery distance of the indoor unit.

[0191] Based on the first angle information and the distance between the indoor unit and the terminal, the relative position of the terminal with respect to the indoor unit is determined.

[0192] When the human-sensing function is in wind-avoidance mode, if the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate will be adjusted to a first preset angle so that the air outlet direction of the indoor unit avoids the relative position. Alternatively,

[0193] When the human sensing function is in the wind blowing mode, if the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

[0194] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air conditioning system, comprising: The refrigerant circulation loop allows the refrigerant to circulate within the compressor, condenser, and evaporator. Indoor unit, the indoor unit including an air guide plate; Outdoor unit; Its characteristic is that it further includes: Ultra-wideband (UWB) pulse transceiver unit, used for receiving and transmitting UWB pulse signals; The controller is configured as follows: After receiving a control command to activate the human sensing function, and after receiving a first UWB pulse signal sent by the terminal through the UWB pulse transceiver component, the first angle information is determined based on the first UWB pulse signal; wherein, the first angle information includes the first azimuth angle of the terminal relative to the indoor unit and the pitch angle of the terminal relative to the indoor unit. Obtain the distance between the indoor unit and the UWB base station, as well as the second azimuth angle of the UWB base station; Based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station, the distance between the indoor unit and the terminal is determined; wherein, the second azimuth angle is the azimuth angle of the terminal relative to the UWB base station; Based on the first angle information and the distance between the indoor unit and the terminal, the angle of the air guide plate is adjusted to achieve the human sensing function.

2. The air conditioning system according to claim 1, characterized in that, The distance between the indoor unit and the terminal is obtained by the following formula: Wherein, D represents the distance between the indoor unit and the terminal, L represents the distance between the indoor unit and the UWB base station, α1 represents the first azimuth angle of the terminal relative to the indoor unit, α2 represents the second azimuth angle of the terminal relative to the UWB base station, and β1 represents the pitch angle of the terminal relative to the indoor unit.

3. The air conditioning system according to claim 1, characterized in that, The controller is configured to adjust the angle of the air guide plate based on the first angle information and the distance between the indoor unit and the terminal, specifically configured as follows: Obtain the current air supply distance of the indoor unit; Based on the first angle information and the distance between the indoor unit and the terminal, the relative position of the terminal with respect to the indoor unit is determined; When the human-sensing function is in wind-avoidance mode, and the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted to a first preset angle so that the air outlet direction of the indoor unit avoids the relative position; or, When the human sensing function is in the wind blowing mode, and the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

4. The air conditioning system according to any one of claims 1-3, characterized in that, The controller is configured to obtain the distance between the indoor unit and the UWB base station, specifically configured as follows: Send a second UWB pulse signal to the UWB base station and record the first transmission time of sending the second UWB pulse signal; The system receives a first response signal sent by the UWB base station and records a first reception time for receiving the first response signal; wherein the first response signal includes a second reception time for the UWB base station to receive the second UWB pulse signal and a second transmission time for sending the first response signal. Send a third UWB pulse signal to the UWB base station, and record the third transmission time of the third UWB pulse signal; A second response signal for receiving the third UWB pulse signal; wherein the second response signal includes a third reception time for the UWB base station to receive the third UWB pulse signal; The propagation time of the UWB pulse signal is determined based on the first cycle duration, the first delay time, the second cycle duration, and the second delay time; wherein, the first cycle duration is the time difference between the first reception time and the first transmission time, the first delay time is the time difference between the second transmission time and the second reception time, the second cycle duration is the time difference between the third reception time and the second transmission time, and the second delay time is the time difference between the third transmission time and the first reception time. The distance between the indoor unit and the UWB base station is determined based on the propagation time of the UWB pulse signal and the speed of light.

5. The air conditioning system according to claim 4, characterized in that, The propagation time of the UWB pulse signal is obtained by the following formula: Among them, T prop T represents the propagation time of the UWB pulse signal. round1 T represents the duration of the first period. round2 T represents the duration of the second period. reply1 T represents the first delay time. reply2 This represents the second delay time.

6. The air conditioning system according to claim 1, characterized in that, The controller is configured to, upon receiving a control command instructing the activation of the human sensing function, specifically configure itself as follows: The cloud server receives a control command from the terminal to activate the human sensing function.

7. The air conditioning system according to claim 1, characterized in that, When the controller is configured to determine the first angle information based on the first UWB pulse signal, it is specifically configured as follows: The first UWB pulse signal is amplified and filtered to obtain the processed first UWB pulse signal. The processed first UWB pulse signal is converted into a digital signal, and then sampled and quantized to obtain discrete signal data; The discrete signal data is subjected to digital signal processing to obtain the spectrum and related characteristic parameters of the first UWB pulse signal; wherein, the related characteristic parameters include: the phase of the first UWB pulse signal and the wavelength of the first UWB pulse signal; The first angle information is determined based on the spectrum of the first UWB pulse signal and its relevant characteristic parameters.

8. A control method for an air conditioning system, characterized in that, The method includes: After receiving a control command to activate the human sensing function, and after receiving a first UWB pulse signal sent by the terminal, the first angle information is determined based on the first UWB pulse signal; wherein, the first angle information includes the first azimuth angle of the terminal relative to the indoor unit and the pitch angle of the terminal relative to the indoor unit. Obtain the distance between the indoor unit and the UWB base station, as well as the second azimuth angle of the UWB base station; Based on the first angle information, the second azimuth angle, and the distance between the indoor unit and the UWB base station, the distance between the indoor unit and the terminal is determined; wherein, the second azimuth angle is the azimuth angle of the terminal relative to the UWB base station; Based on the first angle information and the distance between the indoor unit and the terminal, the angle of the air guide plate is adjusted to achieve the human sensing function.

9. The control method for an air conditioning system according to claim 8, characterized in that, Adjusting the angle of the air guide plate based on the first angle information and the distance between the indoor unit and the terminal includes: Obtain the current air supply distance of the indoor unit; Based on the first angle information and the distance between the indoor unit and the terminal, the relative position of the terminal with respect to the indoor unit is determined; When the human-sensing function is in wind-avoidance mode, and the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted to a first preset angle so that the air outlet direction of the indoor unit avoids the relative position; or, When the human sensing function is in the wind blowing mode, and the distance between the indoor unit and the terminal is less than the air supply distance, the angle of the air guide plate is adjusted according to the relative position so that the air outlet direction of the indoor unit reaches the relative position.

10. The control method for an air conditioning system according to claim 8 or 9, characterized in that, The process of obtaining the distance between the indoor unit and the UWB base station includes: Send a second UWB pulse signal to the UWB base station and record the first transmission time of sending the second UWB pulse signal; The system receives a first response signal sent by the UWB base station and records a first reception time for receiving the first response signal; wherein the first response signal includes a second reception time for the UWB base station to receive the second UWB pulse signal and a second transmission time for sending the first response signal; Send a third UWB pulse signal to the UWB base station, and record the third transmission time of the third UWB pulse signal; A second response signal received from the third UWB pulse signal; wherein the second response signal includes a third reception time at which the UWB base station receives the third UWB pulse signal; The propagation time of the UWB pulse signal is determined based on the first cycle duration, the first delay time, the second cycle duration, and the second delay time; wherein, the first cycle duration is the time difference between the first reception time and the first transmission time, the first delay time is the time difference between the second transmission time and the second reception time, the second cycle duration is the time difference between the third reception time and the second transmission time, and the second delay time is the time difference between the third transmission time and the first reception time. The distance between the indoor unit and the UWB base station is determined based on the propagation time of the UWB pulse signal and the speed of light.

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