A control method and system of an air conditioning system

Abstract

The application provides a control method and system of an air conditioning system, the control method comprising the following steps: obtaining high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of a compressor of the air conditioning system; judging an operation state of the air conditioning system according to the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor; and controlling the operation of the air conditioning system according to the operation state of the compressor. The method detects pressure sensor pressure signals and feeds back to an electronic monitor, and the electronic monitor judges whether the high-pressure side pressure and the low-pressure side pressure are in a normal range. In the case that a refrigeration switch is opened, the low-pressure side pressure is abnormally increased, the high-pressure side pressure is abnormally decreased, the electronic monitor alarms, and a clutch electromagnet is automatically disconnected, so that the driver can continue to work and repair at a proper opportunity, and a belt breakage or even a more serious accident caused by the compressor seizure can be avoided.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery, and specifically to a control method and system for an air conditioning system. Background Technology

[0002] Construction machinery generally operates under harsh conditions, especially in hot weather, where the temperature inside the cab is particularly high. Moreover, the drivers are becoming increasingly younger and have higher requirements for comfort.

[0003] Against this backdrop, the cooling effect of the air conditioning system becomes particularly important. However, the current situation is that compressor malfunctions can lead to seizure without alarm signals. If the compressor is not stopped, the compressor belt may break. If the broken belt gets tangled in the fan or flies out of the machine, it could cause a serious accident. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a control method and system for an air conditioning system that can provide timely feedback on the system status, control the system operation in real time, and improve system safety.

[0005] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0006] In a first aspect, the present invention provides a control method for an air conditioning system, comprising the following steps:

[0007] Obtain the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in the air conditioning system;

[0008] The operating status of the air conditioning system is determined based on the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor.

[0009] The operation of the air conditioning system is controlled according to the operating status of the compressor.

[0010] Furthermore, methods for obtaining the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in an air conditioning system include:

[0011] The refrigerant high-pressure side pressure sensor signal is obtained by a high-pressure side pressure sensor installed on the high-pressure side of the compressor.

[0012] The refrigerant low-pressure side pressure sensor signal is obtained by a low-pressure side pressure sensor installed on the low-pressure side of the compressor;

[0013] The high-pressure side pressure sensor signal and the low-pressure side pressure sensor signal of the refrigerant are processed to obtain the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor.

[0014] Furthermore, the operating status of the air conditioning system is determined based on the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor, including:

[0015] Determine if the compressor is in cooling mode;

[0016] Obtain the preset refrigerant pressure range on the high-pressure side and the refrigerant pressure range on the low-pressure side under the cooling mode;

[0017] When the compressor is in cooling mode, determine whether the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and whether the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode.

[0018] If the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode, then the air conditioning system is judged to be in normal operating condition.

[0019] Controlling the operation of the air conditioning system based on the operating status of the compressor includes:

[0020] If the air conditioning system is operating normally, no control is required.

[0021] Further methods for determining whether the compressor is in cooling mode include:

[0022] The compressor receives a signal from the cooling switch. If the cooling switch is on, the compressor is in cooling mode; if the cooling switch is off, the compressor is in non-cooling mode.

[0023] Furthermore, when the compressor is in cooling mode, if the high-pressure side refrigerant pressure is lower than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is higher than the low-pressure side refrigerant pressure range in cooling mode, then the temperature of the cooling core is obtained.

[0024] Determine whether the temperature of the cooling core is within the preset cooling core temperature range. If so, determine that the operating status of the air conditioning system is a compressor failure state.

[0025] If the temperature of the cooling core is not within the preset cooling core temperature range, it is judged to be in an overcooled state, and the air conditioning system automatically shuts down the compressor, which is a normal control state.

[0026] If the air conditioning system is in an overcooled state, the compressor clutch will be disconnected to reduce the cooling effect and perform defrosting. Once the temperature of the cooling core returns to the preset cooling core temperature range, the clutch will be energized.

[0027] If the air conditioning system is in a compressor fault state, the compressor clutch will be forcibly disconnected, the clutch will be de-energized, the compressor will stop running, and an alarm signal will be output.

[0028] Furthermore, the method for obtaining the temperature of the cooling core includes acquiring the signal of the cooling core temperature sensor through the cooling core temperature sensor, and obtaining the cooling core temperature after data processing.

[0029] Furthermore, when the compressor is in cooling mode, if the high-pressure side refrigerant pressure is higher than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is lower than the low-pressure side refrigerant pressure range in cooling mode, then the operating status of the air conditioning system is determined to be an air conditioning system expansion valve failure state.

[0030] Controlling the operation of the air conditioning system based on the operating status of the compressor includes:

[0031] If the air conditioning system is in a faulty state due to an expansion valve failure, the air conditioning system will be shut down, and an alarm signal will be generated and output.

[0032] Furthermore, determining the operating status of the air conditioning system based on the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor also includes:

[0033] Obtain the preset refrigerant pressure range on the high-pressure side in non-cooling mode and the refrigerant pressure range on the low-pressure side in non-cooling mode;

[0034] When the compressor is in non-cooling mode, if the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in non-cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in non-cooling mode, then the air conditioning system is judged to be in normal operating condition.

[0035] Furthermore, when the compressor is in non-cooling mode, if the high-pressure side refrigerant pressure is lower than the high-pressure side refrigerant pressure range in non-cooling mode or the low-pressure side refrigerant pressure is lower than the low-pressure side refrigerant pressure range in non-cooling mode, then the air conditioning system is determined to be in a refrigerant leakage state.

[0036] Controlling the operation of the air conditioning system based on the operating status of the compressor includes:

[0037] If the air conditioning system is in a refrigerant leak state, a maintenance reminder signal will be generated and output.

[0038] Furthermore, controlling the operation of the air conditioning system based on the operating status of the compressor includes:

[0039] If the air conditioning system is operating normally, no control will be applied.

[0040] If the air conditioning system is in an overcooled state, the compressor clutch will be disconnected to de-energize the clutch, the compressor will stop running and begin defrosting. Once the temperature of the cooling core returns to the preset cooling core temperature range, the clutch will be energized again.

[0041] If the air conditioning system is in a compressor failure state, the compressor clutch will be forcibly disconnected to de-energize the clutch and stop the compressor from running.

[0042] If the air conditioning system is in a faulty state of the air conditioning system expansion valve, the air conditioning system will be shut down and an alarm signal will be generated and output.

[0043] If the air conditioning system is in a refrigerant leak state, a maintenance reminder signal will be generated and output.

[0044] In a second aspect, the present invention provides an air conditioning control system, including a controller, an electronic monitor, a high-pressure side pressure sensor, and a low-pressure side pressure sensor;

[0045] The high-pressure side pressure sensor is installed on the high-pressure side of the compressor and is used to acquire the refrigerant high-pressure side pressure sensor signal.

[0046] The low-pressure side pressure sensor is installed on the low-pressure side of the compressor and is used to acquire the refrigerant low-pressure side pressure sensor signal.

[0047] The controller is used to obtain the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in the air conditioning system based on the refrigerant high-pressure side pressure sensor signal and the refrigerant low-pressure side pressure sensor signal.

[0048] The electronic monitor is used to execute the control method described in the first aspect based on the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor of the air conditioning system, generate corresponding control commands, and send them to the controller for execution.

[0049] Furthermore, the air conditioning control system also includes a cooling core temperature sensor for acquiring cooling core temperature sensor signals and transmitting them to the controller.

[0050] The controller acquires the temperature of the cooling core based on the signal from the cooling core temperature sensor and transmits it to the electronic monitor.

[0051] The electronic monitor is preset with high-pressure side refrigerant pressure range, low-pressure side refrigerant pressure range, and refrigerant core temperature range in cooling mode, and high and low pressure measurement ranges in non-cooling mode; after receiving the signal transmitted by the controller, the electronic monitor performs the following determination:

[0052] Obtain the preset refrigerant pressure range on the high-pressure side and the refrigerant pressure range on the low-pressure side under the cooling mode;

[0053] When the compressor is in cooling mode, if the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode, then the air conditioning system is judged to be in normal operating condition, and no control is performed at this time.

[0054] When the compressor is in cooling mode, if the high-pressure side refrigerant pressure is lower than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is higher than the low-pressure side refrigerant pressure range in cooling mode, then the temperature of the cooling core is obtained.

[0055] Determine whether the temperature of the cooling core is within the preset cooling core temperature range. If so, determine that the air conditioning system is in a compressor fault state, and control the forced disconnection of the compressor clutch to de-energize the clutch and stop the compressor from running.

[0056] If the temperature of the cooling core is lower than the preset cooling core temperature range, it is determined to be in an overcooled state. The compressor clutch is then disconnected to reduce the cooling effect and perform defrosting. Once the cooling core temperature returns to the preset cooling core temperature range, the clutch is energized.

[0057] When the compressor is in cooling mode, if the high-pressure side refrigerant pressure is higher than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is lower than the low-pressure side refrigerant pressure range in cooling mode, the operating status of the air conditioning system is determined to be a faulty state of the air conditioning system expansion valve. The air conditioning system is then shut down, and an alarm signal is generated and output.

[0058] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0059] 1. By acquiring the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the air conditioning system compressor, real-time detection and dynamic monitoring can be performed to obtain the operating status of the air conditioning system, enabling timely feedback and adjustment;

[0060] 2. This method can automatically disconnect the clutch power supply when the controller detects that the pressure exceeds the set range and the compressor seizes up due to abnormal conditions, thus disengaging the clutch and preventing greater losses.

[0061] 3. This method also allows for scheduled maintenance based on the progress of the project;

[0062] 4. This method can detect whether the air conditioning system is leaking refrigerant when it is not in cooling mode. Attached Figure Description

[0063] Figure 1 : Compressor installation diagram.

[0064] Figure 2 Logic diagram for judging the operating status of the compressor. Detailed Implementation

[0065] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0066] This embodiment provides a control method for an air conditioning system, such as... Figure 2 As shown, it includes the following steps:

[0067] Obtain the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in the air conditioning system;

[0068] The operating status of the air conditioning system is determined based on the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor.

[0069] The operation of the air conditioning system is controlled according to the operating status of the compressor.

[0070] Specifically, methods for obtaining the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in an air conditioning system include:

[0071] The refrigerant high-pressure side pressure sensor signal is obtained by a high-pressure side pressure sensor installed on the high-pressure side of the compressor.

[0072] The refrigerant low-pressure side pressure sensor signal is obtained by a low-pressure side pressure sensor installed on the low-pressure side of the compressor;

[0073] The high-pressure side pressure sensor signal and the low-pressure side pressure sensor signal of the refrigerant are processed to obtain the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor.

[0074] Specifically, the operating status of the air conditioning system is determined based on the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor, including:

[0075] Determine if the compressor is in cooling mode;

[0076] Obtain the preset refrigerant pressure range on the high-pressure side and the refrigerant pressure range on the low-pressure side under the cooling mode;

[0077] When the compressor is in cooling mode, determine whether the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and whether the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode.

[0078] If the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode, then the air conditioning system is judged to be in normal operating condition.

[0079] Specifically, methods for determining whether the compressor is in cooling mode include:

[0080] The compressor receives a signal from the cooling switch. If the cooling switch is on, the compressor is in cooling mode; if the cooling switch is off, the compressor is in non-cooling mode.

[0081] Specifically, when the compressor is in cooling mode, if the high-pressure side refrigerant pressure is lower than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is higher than the low-pressure side refrigerant pressure range in cooling mode, then the temperature of the cooling core is obtained.

[0082] Determine whether the temperature of the cooling core is within the preset cooling core temperature range. If so, determine that the operating status of the air conditioning system is a compressor failure state.

[0083] If the temperature of the cooling core is not within the preset cooling core temperature range, it is determined to be in an overcooled state.

[0084] Specifically, the method for obtaining the temperature of the cooling core includes obtaining the signal from the cooling core temperature sensor through the cooling core temperature sensor, and obtaining the cooling core temperature after data processing.

[0085] Specifically, when the compressor is in cooling mode, if the high-pressure side refrigerant pressure is higher than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is lower than the low-pressure side refrigerant pressure range in cooling mode, then the operating status of the air conditioning system is determined to be an air conditioning system expansion valve failure state.

[0086] Preferably, the high-pressure side refrigerant pressure range in the preset cooling mode is 0.8-1.9 MPa;

[0087] The preset refrigerant pressure range on the low-pressure side in the cooling mode is 0.12-0.3 MPa.

[0088] Preset cooling core temperature range: 1-6℃;

[0089] In the preset non-cooling mode, the high and low pressure measurement ranges are both 0.6-0.8 MPa.

[0090] Specifically, determining the operating status of the air conditioning system based on the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor also includes:

[0091] Obtain the preset refrigerant pressure range on the high-pressure side in non-cooling mode and the refrigerant pressure range on the low-pressure side in non-cooling mode;

[0092] When the compressor is in non-cooling mode, if the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in non-cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in non-cooling mode, then the air conditioning system is judged to be in normal operating condition.

[0093] Specifically, controlling the operation of the air conditioning system based on the operating status of the compressor includes:

[0094] If the air conditioning system is operating normally, no control will be applied.

[0095] If the air conditioning system is in an overcooled state, the compressor clutch will be disconnected to reduce the cooling effect and perform defrosting. Once the temperature of the cooling core returns to the preset cooling core temperature range, the clutch will be energized.

[0096] If the air conditioning system is in a compressor failure state, the compressor clutch will be forcibly disconnected to de-energize the clutch and stop the compressor from running.

[0097] If the air conditioning system is in a faulty state of the air conditioning system expansion valve, the air conditioning system will be shut down and an alarm signal will be generated and output.

[0098] If the air conditioning system is in a refrigerant leak state, a maintenance reminder signal will be generated and output. Example 2

[0099] Based on the same inventive concept as Embodiment 1, this embodiment provides an air conditioning control system, such as... Figure 1 As shown, it includes an electronic monitor, a controller (either a vehicle controller or an air conditioning system controller), a high-pressure side pressure sensor, a low-pressure side pressure sensor, and a refrigerant core temperature sensor. The controller detects pressure changes and refrigerant core temperature changes and feeds them back to the electronic monitor. The electronic monitor determines the compressor's operating status based on the pressure and temperature.

[0100] During vehicle operation, when the refrigeration switch is turned on, the compressor clutch engages, and refrigeration begins. The controller detects the high and low pressure refrigerant pressures measured by the pressure sensors and sends this information back to the electronic monitor.

[0101] The electronic monitor has preset refrigerant pressure range on the high-pressure side, refrigerant pressure range on the low-pressure side, and refrigerant core temperature range in cooling mode, as well as high and low pressure measurement ranges in non-cooling mode.

[0102] Preferably, the high-pressure side refrigerant pressure range in the preset cooling mode is 0.8-1.9 MPa;

[0103] The preset refrigerant pressure range on the low-pressure side in the cooling mode is 0.12-0.3 MPa.

[0104] Preset cooling core temperature range: 1-6℃;

[0105] In the preset non-cooling mode, the high and low pressure measurement ranges are both 0.6-0.8 MPa.

[0106] like Figure 2 As shown, the electronic monitor performs a judgment after receiving the pressure and temperature data transmitted from the controller:

[0107] In cooling mode, if the controller detects that the high and low side refrigerant pressures are both within the set range, the compressor will rotate normally and the cooling operation will be normal; if the high-pressure side refrigerant pressure decreases and the low-pressure side refrigerant pressure increases and both exceed the range, the controller will further read the temperature of the cooling core temperature sensor.

[0108] If the temperature is below the normal range, the phenomenon of "high-pressure side refrigerant pressure decreases and low-pressure side refrigerant pressure increases and both exceed the range" is caused by the air conditioning system's mechanism of actively disconnecting the clutch power supply to prevent frost from forming on the cooling core and affecting the cooling effect. The system is in normal operating condition.

[0109] If the temperature is within the normal range, the phenomenon of "low refrigerant pressure on the high-pressure side and high refrigerant pressure on the low-pressure side, both exceeding the range" indicates that the compressor has seized. The electronic monitor then sends a command to the controller to disconnect the clutch power. The controller executes this command, de-energizing the clutch and disengaging it from the compressor rotor, preventing belt breakage, abnormal noise, and other malfunctions. Simultaneously, the electronic monitor alarms, reminding the operator to schedule repairs. With the clutch power disconnected, other components will not be damaged by the compressor seizing, allowing maintenance personnel to schedule repairs according to the actual project progress without delaying the project schedule.

[0110] Specifically, if the refrigerant pressure on the high-pressure side increases and the refrigerant pressure on the low-pressure side decreases and exceeds the range, it is determined that the expansion valve of the air conditioning system is blocked, the electronic monitor will alarm, and maintenance personnel can choose to repair it according to the actual project progress without delaying the project schedule.

[0111] In non-cooling mode, the controller can periodically check the air conditioning system pressure. If the pressure is within the set range, the system is normal. If the air conditioning system pressure is lower than the set pressure, there is a refrigerant leak. This allows for early inspection and repair, avoiding delays in the construction period due to temporary repairs when cooling is needed.

[0112] When the compressor malfunctions and seizes up, the controller detects that the pressure exceeds the set range and sends a feedback to the electronic monitor. The electronic monitor then automatically disconnects the clutch power, disengaging the clutch and preventing further damage.

[0113] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0114] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0115] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0116] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0117] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for an air conditioning system, characterized in that, Includes the following steps: Obtain the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in the air conditioning system; The operating status of the air conditioning system is determined based on the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor. The air conditioning system is controlled to operate based on the compressor's operating status; The operating status of the air conditioning system is determined based on the high-pressure and low-pressure refrigerant pressures of the compressor, including: Determine if the compressor is in cooling mode; Obtain the preset refrigerant pressure range on the high-pressure side and the refrigerant pressure range on the low-pressure side under the cooling mode; When the compressor is in cooling mode, determine whether the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and whether the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode. If the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in cooling mode, then the air conditioning system is judged to be in normal operating condition. Controlling the operation of the air conditioning system based on the operating status of the compressor includes: If the air conditioning system is operating normally, no control will be applied. When the compressor is in cooling mode, if the high-pressure side refrigerant pressure is lower than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is higher than the low-pressure side refrigerant pressure range in cooling mode, then the temperature of the cooling core is obtained. Determine whether the temperature of the cooling core is within the preset cooling core temperature range. If so, determine that the operating status of the air conditioning system is a compressor failure state. If the temperature of the cooling core is not within the preset cooling core temperature range, it is determined to be in an overcooled state. Controlling the operation of the air conditioning system based on the operating status of the compressor includes: If the air conditioning system is in an overcooled state, the compressor clutch will be disconnected to de-energize the clutch, the compressor will stop running and begin defrosting. Once the temperature of the cooling core returns to the preset cooling core temperature range, the clutch will be energized again. If the air conditioning system is in a compressor fault state, the compressor clutch will be forcibly disconnected, the clutch will be de-energized, the compressor will stop running, and an alarm signal will be output.

2. The control method for the air conditioning system according to claim 1, characterized in that, Methods for obtaining the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in an air conditioning system include: The refrigerant high-pressure side pressure sensor signal is obtained by a high-pressure side pressure sensor installed on the high-pressure side of the compressor. The refrigerant low-pressure side pressure sensor signal is obtained by a low-pressure side pressure sensor installed on the low-pressure side of the compressor; The high-pressure side pressure sensor signal and the low-pressure side pressure sensor signal of the refrigerant are processed to obtain the high-pressure side refrigerant pressure and the low-pressure side refrigerant pressure of the compressor.

3. The control method for the air conditioning system according to claim 1, characterized in that, Methods for determining whether the compressor is in cooling mode include: The compressor receives a signal from the cooling switch. If the cooling switch is on, the compressor is in cooling mode; if the cooling switch is off, the compressor is in non-cooling mode.

4. The control method for an air conditioning system according to claim 1, characterized in that, The method for obtaining the temperature of the cooling core includes acquiring the signal from the cooling core temperature sensor through the cooling core temperature sensor, and obtaining the cooling core temperature after data processing.

5. The control method for an air conditioning system according to claim 1, characterized in that, When the compressor is in cooling mode, if the high-pressure side refrigerant pressure is higher than the high-pressure side refrigerant pressure range in cooling mode and the low-pressure side refrigerant pressure is lower than the low-pressure side refrigerant pressure range in cooling mode, then the operating status of the air conditioning system is determined to be the air conditioning system expansion valve failure state. Controlling the operation of the air conditioning system based on the operating status of the compressor includes: If the air conditioning system is in a faulty state due to an expansion valve failure, the air conditioning system will be shut down, and an alarm signal will be generated and output.

6. The control method for an air conditioning system according to claim 1, characterized in that, Determining the operating status of the air conditioning system based on the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor also includes: Obtain the preset refrigerant pressure range on the high-pressure side in non-cooling mode and the refrigerant pressure range on the low-pressure side in non-cooling mode; When the compressor is in non-cooling mode, if the high-pressure side refrigerant pressure is within the high-pressure side refrigerant pressure range in non-cooling mode and the low-pressure side refrigerant pressure is within the low-pressure side refrigerant pressure range in non-cooling mode, then the air conditioning system is judged to be in normal operating condition.

7. The control method for an air conditioning system according to claim 1, characterized in that, When the compressor is in non-cooling mode, if the high-pressure side refrigerant pressure is lower than the high-pressure side refrigerant pressure range in non-cooling mode or the low-pressure side refrigerant pressure is lower than the low-pressure side refrigerant pressure range in non-cooling mode, the air conditioning system is judged to be in refrigerant leakage state. Controlling the operation of the air conditioning system based on the operating status of the compressor includes: If the air conditioning system is in a refrigerant leak state, a maintenance reminder signal will be generated and output.

8. An air conditioning control system, characterized in that, Includes controllers, electronic monitors, high-pressure side pressure sensors, and low-pressure side pressure sensors; The high-pressure side pressure sensor is installed on the high-pressure side of the compressor and is used to acquire the refrigerant high-pressure side pressure sensor signal. The low-pressure side pressure sensor is installed on the low-pressure side of the compressor and is used to acquire the refrigerant low-pressure side pressure sensor signal. The controller is used to obtain the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor in the air conditioning system based on the refrigerant high-pressure side pressure sensor signal and the refrigerant low-pressure side pressure sensor signal. The electronic monitor is used to execute the control method as described in claim 1 based on the high-pressure side refrigerant pressure and low-pressure side refrigerant pressure of the compressor of the air conditioning system, generate corresponding control commands, and send them to the controller for execution.

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