Vehicle air conditioning system monitoring method and system, vehicle and equipment

Abstract

The invention discloses an air conditioning system monitoring method and system of a vehicle, the vehicle and equipment. The air conditioning system monitoring method of the vehicle comprises the steps that the environment temperature, the refrigerant low-pressure pressure of the low-pressure side in the air conditioning system and the refrigerant high-pressure pressure of the high-pressure side are obtained; according to the refrigerant low-pressure pressure and the refrigerant high-pressure pressure, fault judgment pressure is obtained; obtaining a ratio between the evaluation pressure and a saturation pressure corresponding to the ambient temperature; and whether the air conditioning system breaks down or not is determined according to the ratio. By the adoption of the method, early warning can be conducted on the refrigerant faults of the air conditioning system of the vehicle in advance, customers can perceive the problems in time and handle the faults in time, and therefore the problems that due to the fact that the air conditioning system is used under the faults, parts are possibly damaged abnormally, and the vehicle using experience becomes poor are solved, and then the using experience of the vehicle is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle air conditioning system monitoring method, system, vehicle and equipment. Background Art

[0002] In related technologies, the refrigerant pressure sensor of the entire vehicle only serves as high and low pressure protection. For example, when the high-pressure sensor pressure reaches a certain value, the vehicle controller will reduce the compressor speed or even shut down the compressor. Similarly, when the low-pressure sensor is lower than a certain value, it will be judged as a system failure and the compressor will be prohibited from starting.

[0003] However, the above actions are only discovered when the air conditioner is in use. Considering that users only discover problems when using it, it will directly affect the car experience and may even damage system parts. That is, the driver cannot get feedback in time. Only when the cooling function is poor and the cooling effect is not good when the air conditioner is needed, will he go to the service station for inspection. This is often when the air conditioner is urgently needed, which has a greater negative impact on the driving comfort of the driver and passengers. On the other hand, when the system refrigerant is insufficient or overcharged, if the information is not received in time, the use of the air conditioner will cause abnormal operation of the system parts, and in serious cases, the compressor will be damaged. Summary of the invention

[0004] Based on this, it is necessary to provide a vehicle air-conditioning system monitoring method, system, vehicle and equipment for the above-mentioned technical problems. By comparing the average value of the refrigerant high-pressure pressure and the refrigerant low-pressure pressure with the saturation pressure at the ambient temperature, the conclusion that the air-conditioning system refrigerant is overcharged or insufficient can be drawn, and an alarm can be prompted through an instrument or a large screen to allow users to learn about the fault and deal with it in time, without having to wait until the problem is discovered during the use of the vehicle's air-conditioning system. As a result, the vehicle's air-conditioning system refrigerant fault can be warned in advance, allowing customers to perceive the problem in time and deal with the fault in time, thereby avoiding abnormal damage to components and a deterioration in the vehicle experience that may occur when the air-conditioning system is used under fault conditions, thereby effectively improving the vehicle's user experience.

[0005] In a first aspect, a method for monitoring an air conditioning system of a vehicle is provided, comprising:

[0006] Obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side;

[0007] Obtaining a fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure;

[0008] Obtaining a ratio between the judgment pressure and a saturation pressure corresponding to the ambient temperature;

[0009] It is determined whether the air conditioning system has a fault according to the ratio.

[0010] In some examples, obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side includes:

[0011] Based on the ambient temperature sensor configured in the vehicle, the refrigerant low-pressure pressure sensor configured on the low-pressure side of the air-conditioning system, and the refrigerant high-pressure pressure sensor configured on the high-pressure side, the ambient temperature, the refrigerant low-pressure pressure on the low-pressure side of the air-conditioning system, and the refrigerant high-pressure pressure on the high-pressure side are obtained.

[0012] In some examples, obtaining the fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure includes:

[0013] The average value of the refrigerant low pressure and the refrigerant high pressure is calculated, and the average value is used as the fault judgment pressure.

[0014] In some examples, obtaining the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature includes:

[0015] The saturated pressure corresponding to the ambient temperature is found from a pre-stored temperature-saturated pressure correspondence table.

[0016] In some examples, determining whether the air conditioning system is faulty according to the ratio includes:

[0017] Determining whether the ratio is less than a first threshold;

[0018] If yes, it is determined to be a refrigerant leakage or refrigerant undercharging fault;

[0019] If the ratio is greater than a second threshold, it is determined to be a refrigerant overcharge fault, wherein the second threshold is greater than the first threshold.

[0020] In some examples, after determining that the air conditioning system has a fault, the method includes: providing an alarm prompt for the air conditioning system fault.

[0021] In a second aspect, a vehicle air conditioning system monitoring system is provided, comprising:

[0022] An acquisition module, used to obtain the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side;

[0023] The monitoring module is used to obtain a fault judgment pressure based on the refrigerant low pressure and the refrigerant high pressure, and obtain the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature, and determine whether the air-conditioning system has a fault based on the ratio.

[0024] In a third aspect, a vehicle is provided, comprising: the vehicle air conditioning system monitoring system according to the second aspect.

[0025] In a fourth aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the vehicle air conditioning system monitoring method of the above-mentioned first aspect and any possible implementation method of the first aspect are implemented.

[0026] In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the steps of the vehicle air-conditioning system monitoring method of the above-mentioned first aspect and any possible implementation method of the first aspect are implemented.

[0027] In a sixth aspect, a computer program product is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of the vehicle air-conditioning system monitoring method of the above-mentioned first aspect and any possible implementation method of the first aspect are implemented.

[0028] By adopting the embodiment of the present application, the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air-conditioning system, and the high pressure of the refrigerant on the high pressure side are obtained. Then, according to the low pressure of the refrigerant and the high pressure of the refrigerant, the fault judgment pressure is obtained, and the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature is obtained. Finally, it is possible to determine whether the air-conditioning system has a fault according to the ratio. Thus, by comparing the average value of the high pressure of the refrigerant and the low pressure of the refrigerant with the saturation pressure at the ambient temperature, it is concluded that the refrigerant in the air-conditioning system is overcharged or insufficient, and an alarm is prompted through an instrument or a large screen, so that the user can be informed of the fault and handle it in time, without having to wait until the problem is discovered during the use of the vehicle's air-conditioning system. Therefore, the refrigerant fault of the vehicle's air-conditioning system can be warned in advance, so that the customer can perceive the problem in time and handle the fault in time, thereby avoiding the abnormal damage of components and the deterioration of the vehicle experience that may occur when the air-conditioning system is used under fault conditions, and thus effectively improving the vehicle's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 A flow chart of a vehicle air conditioning system monitoring method provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of an application of a vehicle air conditioning system monitoring method provided in an embodiment of the present application;

[0032] Figure 3A structural block diagram of a vehicle air conditioning system monitoring system provided in an embodiment of the present application;

[0033] Figure 4 A structural block diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the embodiments and drawings. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present application, that is, the features of the embodiments, can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] The following describes in detail the vehicle air conditioning system monitoring method, system, device and medium according to the embodiments of the present application in conjunction with the accompanying drawings.

[0037] Figure 1 FIG. 1 is a flow chart of a vehicle air conditioning system monitoring method according to an embodiment of the present application. Figure 1 As shown, the vehicle air conditioning system monitoring method according to an embodiment of the present application includes the following steps:

[0038] S101: Obtaining the ambient temperature, the low-pressure pressure of the refrigerant on the low-pressure side of the air-conditioning system, and the high-pressure pressure of the refrigerant on the high-pressure side.

[0039] In one embodiment of the present application, the ambient temperature, the low-pressure refrigerant pressure on the low-pressure side of the air-conditioning system, and the high-pressure refrigerant pressure on the high-pressure side are obtained, including: based on an ambient temperature sensor configured in the vehicle, a low-pressure refrigerant pressure sensor configured on the low-pressure side of the air-conditioning system, and a high-pressure refrigerant pressure sensor configured on the high-pressure side, the ambient temperature, the low-pressure refrigerant pressure on the low-pressure side of the air-conditioning system, and the high-pressure refrigerant pressure on the high-pressure side are obtained.

[0040] like Figure 2 As shown, in a specific application, there are a refrigerant low-pressure sensor, a refrigerant high-pressure sensor, and an ambient temperature sensor on the vehicle, which respectively collect the refrigerant low-pressure pressure, the refrigerant high-pressure pressure, and the ambient temperature, and then transmit them to the air-conditioning controller in the form of hard-wired signals.

[0041] S102: Obtaining a fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure.

[0042] In one embodiment of the present application, the fault judgment pressure is obtained according to the refrigerant low pressure and the refrigerant high pressure, including: calculating the average value of the refrigerant low pressure and the refrigerant high pressure, and using the average value as the fault judgment pressure. That is, calculating the average pressure between the refrigerant low pressure and the refrigerant high pressure.

[0043] For example, combined with Figure 2 As shown, the bottom layer software in the air-conditioning controller calculates the current refrigerant low pressure, refrigerant high pressure, and ambient temperature through hard-wired signals. When the compressor of the air-conditioning system is not working, the application layer software of the air-conditioning controller calculates the average value of the current refrigerant low pressure and refrigerant high pressure, that is, the judgment pressure.

[0044] S103: Obtaining a ratio between the evaluation pressure and the saturation pressure corresponding to the ambient temperature.

[0045] In one embodiment of the present application, obtaining the ratio between the evaluation pressure and the saturation pressure corresponding to the ambient temperature includes: querying the saturation pressure corresponding to the ambient temperature from a pre-stored temperature-saturation pressure correspondence table.

[0046] Different temperatures correspond to different saturation pressures. The saturation pressures corresponding to different temperatures can be pre-calibrated to obtain a temperature-saturation pressure correspondence table and stored in the air-conditioning controller. In this way, the air-conditioning controller can read the temperature-saturation pressure correspondence table according to the ambient temperature and query the corresponding saturation pressure.

[0047] Then, the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature is calculated, and this ratio is recorded as C.

[0048] S104: Determine whether the air conditioning system has a fault according to the ratio.

[0049] In one embodiment of the present application, determining whether the air-conditioning system has a fault is based on the ratio, including: judging whether the ratio is less than a first threshold value; if so, determining it as a refrigerant leakage or a refrigerant undercharging fault; if the ratio is greater than a second threshold value, determining it as a refrigerant overcharging fault, wherein the second threshold value is greater than the first threshold value.

[0050] In a specific application, the first threshold is, for example, 0.4, and the second threshold is, for example, 1.8, and the refrigerant fault state is determined according to the ratio C:

[0051] If the C value is low (e.g., lower than 0.4), it is judged that the refrigerant is leaking or the refrigerant is undercharged;

[0052] If the C value is high (for example, higher than 1.8), it is judged that the refrigerant is overcharged.

[0053] After determining that the air conditioning system has a fault, the method includes: providing an alarm prompt for the air conditioning system fault. Figure 2 As shown, the air conditioning controller transmits the refrigerant fault status to the multimedia host, and the multimedia host controls the screen to prompt the refrigerant fault status.

[0054] According to the vehicle air conditioning system monitoring method of the embodiment of the present application, the ambient temperature, the low pressure pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure pressure of the refrigerant on the high pressure side are obtained. Then, according to the low pressure pressure of the refrigerant and the high pressure pressure of the refrigerant, the fault judgment pressure is obtained, and the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature is obtained. Finally, it is possible to determine whether the air conditioning system has a fault according to the ratio. Thus, by comparing the average value of the high pressure pressure of the refrigerant and the low pressure pressure of the refrigerant with the saturation pressure at the ambient temperature, it is concluded that the refrigerant in the air conditioning system is overcharged or insufficient, and an alarm is prompted through an instrument or a large screen, so that the user can be informed of the fault and handle it in time, without having to wait until the problem is discovered during the use of the vehicle's air conditioning system. Therefore, the refrigerant fault of the vehicle's air conditioning system can be warned in advance, so that the customer can perceive the problem in time and handle the fault in time, thereby avoiding the abnormal damage of components and the deterioration of the vehicle experience that may occur when the air conditioning system is used under fault conditions, and thus effectively improving the vehicle's use experience.

[0055] Figure 3 FIG. 1 is a structural block diagram of a vehicle air conditioning system monitoring system according to an embodiment of the present application. Figure 3 As shown, a vehicle air conditioning system monitoring system according to an embodiment of the present application includes: an acquisition module 310 and a monitoring module 320, wherein:

[0056] An acquisition module 310 is used to obtain the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side;

[0057] The monitoring module 320 is used to obtain a fault judgment pressure based on the refrigerant low pressure and the refrigerant high pressure, and obtain the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature, and determine whether the air-conditioning system has a fault based on the ratio.

[0058] According to the vehicle air conditioning system monitoring system of the embodiment of the present application, the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side are obtained. Then, according to the low pressure of the refrigerant and the high pressure of the refrigerant, the fault judgment pressure is obtained, and the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature is obtained. Finally, it is possible to determine whether the air conditioning system has a fault according to the ratio. Thus, by comparing the average value of the high pressure of the refrigerant and the low pressure of the refrigerant with the saturation pressure at the ambient temperature, it is concluded that the refrigerant in the air conditioning system is overcharged or insufficient, and an alarm is prompted through an instrument or a large screen, so that the user can be informed of the fault and handle it in time, without having to wait until the problem is discovered during the use of the vehicle's air conditioning system. Therefore, the refrigerant fault of the vehicle's air conditioning system can be warned in advance, so that the customer can perceive the problem in time and handle the fault in time, thereby avoiding the abnormal damage of components and the deterioration of the vehicle experience that may occur when the air conditioning system is used under fault conditions, and thus effectively improving the vehicle's use experience.

[0059] For the specific definition of the vehicle air conditioning system monitoring system, please refer to the definition of the vehicle air conditioning system monitoring method mentioned above, which will not be repeated here. The various modules of the above-mentioned vehicle air conditioning system monitoring system can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0060] In one embodiment, a vehicle is provided, comprising: an air conditioning system monitoring system for a vehicle according to any one of the above embodiments. The vehicle obtains the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side, and then obtains the fault judgment pressure according to the low pressure of the refrigerant and the high pressure of the refrigerant, and obtains the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature, and finally, it can determine whether the air conditioning system has a fault according to the ratio. Thus, by comparing the average value of the high pressure of the refrigerant and the low pressure of the refrigerant with the saturation pressure at the ambient temperature, it is concluded that the refrigerant in the air conditioning system is overcharged or insufficient, and an alarm is prompted through an instrument or a large screen, so that the user can be informed of the fault and handle it in time, without having to wait until the problem is discovered during the use of the vehicle's air conditioning system. Therefore, the refrigerant fault of the vehicle's air conditioning system can be warned in advance, so that the customer can perceive the problem in time and handle the fault in time, thereby avoiding the abnormal damage of components and the deterioration of the vehicle experience that may occur when the air conditioning system is used under fault, and thus effectively improving the vehicle's use experience.

[0061] In addition, other structures and functions of the vehicle according to the embodiment of the present application are known to ordinary technicians in the field and will not be elaborated here.

[0062] In one embodiment, a computer device is provided. Figure 4 This is a block diagram of the computer device provided in the embodiment of the present application, refer to Figure 4 The computer device includes a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the above-mentioned vehicle air conditioning system monitoring method embodiment is implemented. For example, the following steps are performed: obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side;

[0063] Obtaining a fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure;

[0064] Obtaining a ratio between the judgment pressure and a saturation pressure corresponding to the ambient temperature;

[0065] It is determined whether the air conditioning system has a fault according to the ratio.

[0066] The embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, and the processor implements the above-mentioned vehicle air conditioning system monitoring method embodiment when executing the computer program. For example, the following steps are performed: obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side;

[0067] Obtaining a fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure;

[0068] Obtaining a ratio between the judgment pressure and a saturation pressure corresponding to the ambient temperature;

[0069] It is determined whether the air conditioning system has a fault according to the ratio.

[0070] The present application embodiment provides a computer program product, which includes instructions. When the instructions are executed, the method described in the embodiment of the present application is executed. For example, it can be executed Figure 1 The various steps of the vehicle air conditioning system monitoring method shown, for example, are performed: obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side;

[0071] Obtaining a fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure;

[0072] Obtaining a ratio between the judgment pressure and a saturation pressure corresponding to the ambient temperature;

[0073] It is determined whether the air conditioning system has a fault according to the ratio.

[0074] Those of ordinary skill in the art can understand that all or part of the processes in the methods for implementing the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0075] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A vehicle air conditioning system monitoring method, characterized in that: include: Obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side; Obtaining a fault assessment pressure according to the refrigerant low pressure and the refrigerant high pressure; Obtaining a ratio between the judgment pressure and a saturation pressure corresponding to the ambient temperature; It is determined whether the air conditioning system has a fault according to the ratio.

2. The vehicle air conditioning system monitoring method according to claim 1, characterized in that: The step of obtaining the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side includes: Based on the ambient temperature sensor configured in the vehicle, the refrigerant low-pressure pressure sensor configured on the low-pressure side of the air-conditioning system, and the refrigerant high-pressure pressure sensor configured on the high-pressure side, the ambient temperature, the refrigerant low-pressure pressure on the low-pressure side of the air-conditioning system, and the refrigerant high-pressure pressure on the high-pressure side are obtained.

3. The vehicle air conditioning system monitoring method according to claim 1, characterized in that: The step of obtaining the fault judgment pressure according to the refrigerant low pressure and the refrigerant high pressure comprises: The average value of the refrigerant low pressure and the refrigerant high pressure is calculated, and the average value is used as the fault judgment pressure.

4. The vehicle air conditioning system monitoring method according to claim 1, characterized in that: The step of obtaining a ratio between the evaluation pressure and the saturation pressure corresponding to the ambient temperature comprises: The saturated pressure corresponding to the ambient temperature is found from a pre-stored temperature-saturated pressure correspondence table.

5. The vehicle air conditioning system monitoring method according to any one of claims 1 to 4, characterized in that: Determining whether the air conditioning system has a fault according to the ratio includes: Determining whether the ratio is less than a first threshold; If yes, it is determined to be a refrigerant leakage or refrigerant undercharging fault; If the ratio is greater than a second threshold, it is determined to be a refrigerant overcharge fault, wherein the second threshold is greater than the first threshold.

6. The vehicle air conditioning system monitoring method according to claim 1, characterized in that: After determining that the air conditioning system has a fault, the method includes: providing an alarm prompt for the air conditioning system fault.

7. A vehicle air conditioning system monitoring system, characterized in that: include: An acquisition module, used to obtain the ambient temperature, the low pressure of the refrigerant on the low pressure side of the air conditioning system, and the high pressure of the refrigerant on the high pressure side; The monitoring module is used to obtain a fault judgment pressure based on the refrigerant low pressure and the refrigerant high pressure, and obtain the ratio between the judgment pressure and the saturation pressure corresponding to the ambient temperature, and determine whether the air-conditioning system has a fault based on the ratio.

8. A vehicle, characterized in that: include: The vehicle air conditioning system monitoring system according to claim 7.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the vehicle air conditioning system monitoring method according to any one of claims 1-6 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the vehicle air conditioning system monitoring method according to any one of claims 1 to 6 is implemented.

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