Vacuum pump control method, device and equipment

Abstract

According to the vacuum pump control method, device and equipment provided by the embodiment of the invention, when the environment pressure sensor breaks down, the standard pressure value is determined based on the historical environment pressure value collected by the environment pressure sensor; after the vehicle executes braking operation, the vacuum pump is controlled to execute exhaust operation based on the standard pressure value and a system pressure value in the vacuum pump, and the system pressure value is collected by a system pressure sensor; and correcting the standard pressure value based on the duration of the exhaust operation. When the environment pressure sensor breaks down, the historical environment pressure value serves as the standard pressure value, the standard pressure value is corrected along with changes of the external environment pressure, normal operation of the vacuum pump can be guaranteed, and the vacuum pump is prevented from breaking down due to frequent starting or continuous operation.

Description

Technical Field

[0001] The present application relates to the field of vehicle control, and in particular to a vacuum pump control method, device and equipment. Background Art

[0002] As one of the important components of the braking system of pure electric vehicles, the vacuum pump can assist users in braking the vehicle through the pressure difference between the inside and outside of the pump. The ambient pressure sensor collects the ambient pressure (i.e., external pressure) in real time, and the system pressure sensor collects the system pressure (i.e., internal pressure) in real time. After the vacuum pump is running, the system pressure can be reduced until the pressure difference between the inside and outside of the pump exceeds the pressure threshold and then stops.

[0003] When the ambient pressure sensor is damaged, the existing solution is to use a default standard pressure value. However, when the vehicle travels in areas with different altitudes, its ambient pressure will change. Using only a fixed standard pressure value is difficult to apply to different scenarios, affecting the normal operation of the vacuum pump. Summary of the invention

[0004] In view of this, the present application provides a vacuum pump control method, device and equipment to help solve the problem in the prior art that the vacuum pump frequently runs due to the difference between the standard pressure value and the actual pressure value.

[0005] In a first aspect, an embodiment of the present application provides a vacuum pump control method, comprising: When the ambient pressure sensor fails, determining the standard pressure value based on the historical ambient pressure values ​​collected by the ambient pressure sensor; After the vehicle performs a braking operation, the vacuum pump is controlled to perform an exhaust operation based on the standard pressure value and a system pressure value inside the vacuum pump, wherein the system pressure value is collected by a system pressure sensor; The standard pressure value is corrected based on the duration of the exhaust operation.

[0006] In an optional embodiment, when the ambient pressure sensor fails, before determining the standard pressure value based on the historical ambient pressure values ​​collected by the ambient pressure sensor, the method further includes: Acquire the ambient pressure value collected by the ambient pressure sensor; When the ambient pressure value exceeds a preset ambient pressure range, it is determined that the ambient pressure sensor fails.

[0007] In an optional embodiment, determining the standard pressure value based on the historical environmental pressure value collected by the environmental pressure sensor includes: In response to a failure of the ambient pressure sensor during vehicle power-on, determining a historical ambient pressure value corresponding to a first time interval from a moment of failure of the ambient pressure sensor as the standard pressure value; In response to the ambient pressure sensor failing during the vehicle power-off process, a historical ambient pressure value corresponding to a second time period from a previous vehicle power-off moment is determined as the standard pressure value.

[0008] In an optional embodiment, in response to the ambient pressure sensor failing during vehicle power-on, determining a historical ambient pressure value corresponding to a first time interval from the moment of failure of the ambient pressure sensor as the standard pressure value includes: When it is detected that the ambient pressure sensor fails during the vehicle power-on process, obtaining a first historical voltage value sent by the ambient pressure sensor; Determine a first historical voltage value that is a first time away from the fault moment as a standard voltage value; The standard pressure value corresponding to the standard voltage value is determined based on a pre-stored mapping relationship table.

[0009] In an optional embodiment, in response to the ambient pressure sensor failing during the vehicle power-off process, determining a historical ambient pressure value corresponding to a second time interval from a previous power-off time of the vehicle as the standard pressure value includes: When it is detected that the ambient pressure sensor fails during the power-off process of the vehicle, a second historical voltage value sent by the ambient pressure sensor during the last power-on process of the vehicle is obtained; Determine a second historical voltage value that is a second time away from the fault moment as a standard voltage value; The standard pressure value corresponding to the standard voltage value is determined based on a pre-stored mapping relationship table.

[0010] In an optional embodiment, the correction process of the standard pressure value based on the duration of the exhaust operation includes: Based on the continuous increase in the duration of the exhaust operation, the standard pressure value is controlled to cyclically decrease according to the first value.

[0011] In an optional embodiment, the step of controlling the standard pressure value to decrease cyclically according to the first value based on the continuous increase in the duration of the exhaust operation comprises: Starting timing after the exhaust operation is performed for a first period of time; Every time it is detected that the timing exceeds the second threshold, the difference between the standard pressure value and the first value is determined as a new standard pressure value, and the timing is restarted.

[0012] In a second aspect, an embodiment of the present application provides a vacuum pump control device, comprising: A determination module, configured to determine a standard pressure value based on historical ambient pressure values ​​collected by the ambient pressure sensor when the ambient pressure sensor fails; a control module, configured to control the vacuum pump to perform an exhaust operation based on the standard pressure value and a system pressure value inside the vacuum pump after the vehicle performs a braking operation, wherein the system pressure value is collected by a system pressure sensor; The correction module is used to correct the standard pressure value based on the duration of the exhaust operation.

[0013] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the electronic device is triggered to execute any one of the methods described in the first aspect above.

[0014] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute any method described in the first aspect.

[0015] In a fifth aspect, an embodiment of the present application provides a computer program product, which includes executable instructions. When the executable instructions are executed on a computer, the computer executes any method described in the first aspect.

[0016] By adopting the solution provided in the embodiment of the present application, when the ambient pressure sensor fails, the standard pressure value is determined based on the historical ambient pressure value collected by the ambient pressure sensor; after the vehicle performs a braking operation, the vacuum pump is controlled to perform an exhaust operation based on the standard pressure value and the system pressure value inside the vacuum pump, and the system pressure value is collected by the system pressure sensor; the standard pressure value is corrected based on the duration of the exhaust operation. When the ambient pressure sensor fails, the historical ambient pressure value is used as the standard pressure value, and the standard pressure value is corrected as the external ambient pressure changes, which can ensure the normal operation of the vacuum pump and avoid failure of the vacuum pump due to frequent startup or continuous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 An exemplary schematic diagram of a vacuum pump control method provided in an embodiment of the present application; Figure 2 A method flow chart of a vacuum pump control method provided in an embodiment of the present application; Figure 3 A method flow chart of another vacuum pump control method provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of a vacuum pump control device provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0020] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0022] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] With the rapid development of the new energy vehicle market and the explosive growth of the number of electric vehicles on the market, people's travel conditions are becoming more and more complicated. As one of the important components of the braking system of pure electric vehicles, a reasonable vacuum pump control strategy can ensure the braking performance of the vehicle while extending the service life of the vacuum pump and avoiding vacuum pump failure.

[0024] The working process of the vacuum pump can be referred to Figure 1, the ambient pressure sensor collects the ambient pressure value in real time and sends it to the vehicle control unit (VCU), the system pressure sensor (relative pressure sensor) collects the system pressure value in real time and sends it to the vehicle control unit VCU, the ambient pressure value is used to characterize the atmospheric pressure outside the vacuum pump, and the system pressure value is used to characterize the change value of the internal pressure of the vacuum pump. When the user steps on the brake, due to the pressure values ​​inside and outside the vacuum pump, the vacuum pump can assist the user in performing the braking operation. After the braking operation is completed, the VCU controls the vacuum pump to extract the internal air and reduce the system pressure until the change in the system pressure relative to the original pressure exceeds the preset pressure threshold and stops. Optionally, there is a mapping relationship between the pressure threshold and the ambient pressure value, and the larger the ambient pressure value, the larger the corresponding pressure threshold. For example, the pressure threshold can be set to 60kpa, 80kpa or other reasonable values.

[0025] After receiving the ambient pressure value, the VCU will first determine whether the ambient pressure value is in line with common sense. If the ambient pressure value is abnormal, it can be determined that the ambient pressure sensor is faulty. If the ambient pressure value is normal, the subsequent process can be executed normally.

[0026] After the VCU determines that the ambient pressure sensor is faulty, it will select a default standard pressure value as the subsequent judgment standard. However, the vacuum pump usually reduces the internal system pressure by a certain proportion. When the vehicle is traveling in a plateau area, the ambient pressure is low, and it is difficult for the vacuum pump to make the difference between the system pressure and the ambient pressure exceed the pressure threshold. For example, the vacuum pump of a certain vehicle can reduce the system pressure to 30% of the ambient pressure. When the ambient pressure is 100kpa, the corresponding pressure threshold is set to 60kpa. The vacuum pump can reduce the system pressure to 30kpa at the lowest. When the system pressure is reduced to 40kpa, the relative change of the system pressure has reached 60kpa, and the vacuum pump can stop running. When the vehicle is traveling on a plateau and the ambient pressure is 80kpa, the vacuum pump can reduce the system pressure to 24kpa at the lowest, and the maximum relative change of the system pressure is 56kpa. At this time, the pressure threshold is still judged according to 60kpa (the corresponding pressure threshold when the ambient pressure is 100kpa). The relative change of the vacuum pump system pressure continues to be less than the pressure threshold, and the vacuum pump will continue to run, which may cause a failure, resulting in vehicle speed limit or power off.

[0027] In response to the above problems, an embodiment of the present application provides a vacuum pump control method, which can ensure the normal operation of the vacuum pump and avoid failure of the vacuum pump due to frequent startup or continuous operation by reasonably setting the standard pressure value and correcting the standard pressure value based on actual conditions.

[0028] Figure 2 The flowchart of a vacuum pump control method provided in the embodiment of the present application is shown in FIG. The method can be applied to a vehicle controller VCU, such as Figure 2 As shown, the method may include: Step 201 : when an environmental pressure sensor fails, a standard pressure value is determined based on historical environmental pressure values ​​collected by the environmental pressure sensor.

[0029] Step 202 : After the vehicle performs a braking operation, the vacuum pump is controlled to perform an exhaust operation based on a standard pressure value and a system pressure value inside the vacuum pump, where the system pressure value is collected by a system pressure sensor.

[0030] Step 203: Correct the standard pressure value based on the duration of the exhaust operation.

[0031] Specifically, the VCU has a preset ambient pressure range. During the process of receiving the ambient pressure value, if the ambient pressure value is detected to exceed the ambient pressure range, it is determined that the ambient pressure sensor is faulty. After determining that the ambient pressure sensor is faulty, the VCU will select a standard pressure value from the historical ambient pressure values ​​collected by the ambient pressure sensor as the pressure standard for subsequent judgments.

[0032] In the embodiment of the present application, the environmental pressure sensor failure may include two situations: (1) Fault during vehicle power-on During the vehicle power-on process, if the VCU detects a fault in the ambient pressure sensor, the historical ambient pressure value corresponding to the first time period from the moment of the ambient pressure sensor fault can be determined as the standard pressure value. The fault moment is the moment when the VCU detects the abnormal ambient pressure value, and the first time period can be flexibly set based on the actual situation, for example, the first time period can be set to 0.01 seconds.

[0033] In actual scenarios, the ambient pressure sensor transmits the ambient pressure value in the form of a voltage signal. When the VCU detects a fault in the ambient pressure sensor, it obtains the first historical voltage value sent by the ambient pressure sensor, and each voltage value is marked with a corresponding acquisition time. The VCU determines the first historical voltage value with a first time interval between the acquisition time and the moment of the fault as the standard voltage value. There is a mapping relationship between the voltage value and the pressure value. Based on the preset mapping relationship table, the VCU can determine the standard pressure value corresponding to the standard voltage value.

[0034] (2) Failure during vehicle power-off If the VCU detects a fault in the ambient pressure sensor when the vehicle is powered on again and the ambient pressure sensor was not faulty during the last power-on of the vehicle, it can be determined that the ambient pressure sensor failed during the power-off process of the vehicle. The VCU can determine the historical ambient pressure value corresponding to the second time period from the last time the vehicle was powered off as the standard pressure value. Specifically, the VCU obtains the second historical voltage value sent by the ambient pressure sensor during the last power-on of the vehicle, and each voltage value is marked with the corresponding acquisition time. The VCU determines the second historical voltage value that is the second time period from the last time the vehicle was powered off as the standard voltage value. Similarly, the standard pressure value corresponding to the standard voltage value can be determined based on the pre-stored mapping relationship table.

[0035] Optionally, the VCU may also determine the historical ambient pressure value corresponding to the second time interval from the moment of power-off as the standard pressure value when the vehicle is powered off, and store the standard pressure value. When the vehicle is powered on again, if a fault of the ambient pressure sensor is detected, the standard pressure value is directly determined based on the stored standard voltage value.

[0036] In the embodiment of the present application, the standard pressure value is the pressure value collected shortly before the pressure sensor fails, which can accurately reflect the ambient pressure around the vehicle and ensure that the vacuum pump can operate normally.

[0037] As the vehicle continues to move, the ambient pressure around the vehicle may change accordingly. After a certain moment, the above-determined standard pressure value may still not be applicable to subsequent determinations. To address this issue, the VCU will correct the determined standard pressure value in steps 202 to 203 to ensure that the corrected standard pressure value can accurately reflect the ambient pressure around the vehicle.

[0038] Specifically, when the user steps on the brakes and the vehicle performs a braking operation, the VCU needs to obtain the pressure threshold corresponding to the standard pressure value and control the vacuum pump to perform an exhaust operation until the relative change in system pressure exceeds the pressure threshold. If the actual current ambient pressure value of the vehicle is different from the standard pressure value, the obtained pressure threshold is inaccurate, and the exhaust operation of the vacuum pump may last for a long time, causing a vacuum pump failure. To address this issue, the VCU can correct the standard pressure value based on the duration of the exhaust operation.

[0039] In an optional embodiment, in response to the continuous increase in the duration of the exhaust operation, the VCU can control the standard pressure value to cyclically decrease according to the first value. Specifically, the VCU starts timing when the exhaust operation exceeds the first threshold, and each time it detects that the timing exceeds the second threshold, the standard pressure value is subtracted from the first value, and the difference is determined as the new standard pressure value, and then the timing is restarted. As the standard pressure value continues to decrease, its corresponding pressure threshold will gradually decrease until the relative change in the vacuum pump system pressure exceeds the pressure threshold.

[0040] The first threshold value can be adaptively set with reference to the secondary fault diagnosis time of the vacuum pump operation timeout. After the vacuum pump operation exceeds the secondary fault diagnosis time, the VCU will report a vacuum pump operation timeout fault, record the fault code and limit the speed. The first threshold value can be less than the diagnosis time. The purpose is to sacrifice a certain diagnostic accuracy and correct the standard pressure value before the vehicle speed is limited to ensure safety performance under extreme conditions. The second threshold value can be determined with reference to the operating law of the vacuum pump. For example, if the vacuum pump runs for 5 seconds and pauses for 5 seconds in a cycle, the second threshold value can be between 10 and 15 seconds. The first value can be flexibly set based on experience. The above specific values ​​are only exemplary descriptions and do not limit the first threshold value, the second threshold value and the first value.

[0041] Figure 3 A flow chart of another vacuum pump control method provided in an embodiment of the present application. Figure 3 As shown, the method may include: Step 301: VCU receives the environmental pressure value in real time.

[0042] Step 302 , determining whether the ambient pressure value is within the ambient pressure range, if so, continuing to receive the ambient pressure value sent by the ambient pressure sensor, otherwise proceeding to step 303 .

[0043] Step 303, determining the standard pressure value.

[0044] When the ambient pressure value is outside the ambient pressure range, it can be determined that the ambient pressure sensor is faulty, and the VCU needs to determine the standard pressure value for executing subsequent processes. Pressure sensor failures can be divided into failures during power-on or power-off. Different methods are used to determine the standard pressure value for different scenarios. For details, please refer to Figure 2 Description of the process.

[0045] Step 304, performing exhaust operation after braking.

[0046] Based on the pressure threshold value obtained from the standard pressure value, the vacuum pump is controlled to perform an exhaust operation.

[0047] Step 305, determining whether the vacuum pump operation duration exceeds a first threshold value, if so, correcting the standard pressure value, otherwise continuing to perform the exhaust operation.

[0048] Step 306, correcting the standard pressure value.

[0049] Normally, only when the standard pressure value is greater than the actual pressure of the vehicle's environment will the vacuum pump have difficulty meeting the pressure threshold requirement and continue to work for a long time. Therefore, the VCU will reduce the standard pressure value. Optionally, the standard pressure value can be gradually reduced based on a fixed value or a fixed proportional coefficient.

[0050] Step 307 , determining whether the vacuum pump is still running after passing the second threshold value, if so, returning to step 306 to correct the standard pressure value again, and entering step 308 .

[0051] Step 308, storing the current standard pressure value.

[0052] The stopping of the vacuum pump indicates that the current standard pressure value is able to match the actual ambient pressure. The VCU ends the cycle and stores the current standard pressure value.

[0053] In the embodiment of the present application, by reasonably determining the standard pressure value and making appropriate corrections, the problem of vehicle power failure, speed limit under high altitude conditions or frequent startup of the vacuum pump under low altitude conditions can be effectively avoided.

[0054] Figure 4 This is a schematic diagram of the structure of a vacuum pump control device provided in an embodiment of the present application. Figure 4 As shown, the device may include: The determination module 410 is used to determine the standard pressure value based on the historical environmental pressure values ​​collected by the environmental pressure sensor when the environmental pressure sensor fails.

[0055] The control module 420 is used to control the vacuum pump to perform an exhaust operation based on a standard pressure value and a system pressure value inside the vacuum pump after the vehicle performs a braking operation, and the system pressure value is collected by a system pressure sensor.

[0056] The correction module 430 is used to correct the standard pressure value based on the duration of the exhaust operation.

[0057] Corresponding to the above embodiments, the present application also provides an electronic device. Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, the electronic device 500 may include: a processor 501, a memory 502 and a communication unit 503. These components communicate through one or more buses, and those skilled in the art can understand that the structure of the electronic device shown in the figure does not constitute a limitation on the embodiment of the present application, it can be a bus structure or a star structure, and can also include more or fewer components than shown in the figure, or combine certain components, or arrange components differently.

[0058] The communication unit 503 is used to establish a communication channel so that the electronic device can communicate with other devices, receive user data sent by other devices or send user data to other devices.

[0059] The processor 501 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. It runs or executes software programs, instructions, and / or modules stored in the memory 502, and calls data stored in the memory to perform various functions of the electronic device and / or process data. The processor can be composed of an integrated circuit (IC), for example, it can be composed of a single packaged IC, or it can be composed of multiple packaged ICs with the same or different functions. For example, the processor 501 can only include a central processing unit (CPU). In the embodiment of the present application, the CPU can be a single computing core or multiple computing cores.

[0060] The memory 502 is used to store the execution instructions of the processor 501. The memory 502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0061] When the execution instructions in the memory 502 are executed by the processor 501 , the electronic device 500 is enabled to execute part or all of the steps in the above embodiments.

[0062] In a specific implementation, the present application further provides a computer storage medium, wherein the computer storage medium may store a program, and when the program is executed, the program may include some or all of the steps in each embodiment of the vacuum pump control method provided in the present application. The storage medium may be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0063] In a specific implementation, the present application also provides a computer program product, wherein the computer program product includes executable instructions, and when the executable instructions are executed on a computer, the computer executes part or all of the steps in each embodiment of the vacuum pump control method provided in the present application.

[0064] The embodiment of the present application also provides a non-temporary computer-readable storage medium, which stores computer instructions, and the computer instructions enable the computer to execute the vacuum pump control method provided by the embodiment of the present application.

[0065] The above-mentioned non-temporary computer-readable storage medium may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (Read Only Memory; hereinafter referred to as: ROM), an erasable programmable read-only memory (ErasableProgrammable Read Only Memory; hereinafter referred to as: EPROM) or flash memory, optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device or device.

[0066] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0067] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0068] Those skilled in the art can clearly understand that the technology in the embodiments of the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution in the embodiments of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application or some parts of the embodiments.

[0069] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims

1. A vacuum pump control method, characterized in that: include: When the ambient pressure sensor fails, determining the standard pressure value based on the historical ambient pressure values ​​collected by the ambient pressure sensor; After the vehicle performs a braking operation, the vacuum pump is controlled to perform an exhaust operation based on the standard pressure value and a system pressure value inside the vacuum pump, wherein the system pressure value is collected by a system pressure sensor; The standard pressure value is corrected based on the duration of the exhaust operation.

2. The method according to claim 1, characterized in that When the ambient pressure sensor fails, before determining the standard pressure value based on the historical ambient pressure values ​​collected by the ambient pressure sensor, the method further includes: Acquire the ambient pressure value collected by the ambient pressure sensor; When the ambient pressure value exceeds a preset ambient pressure range, it is determined that the ambient pressure sensor fails.

3. The method according to claim 1, characterized in that Determining a standard pressure value based on the historical environmental pressure value collected by the environmental pressure sensor includes: In response to a failure of the ambient pressure sensor during vehicle power-on, determining a historical ambient pressure value corresponding to a first time interval from a moment of failure of the ambient pressure sensor as the standard pressure value; In response to the ambient pressure sensor failing during the vehicle power-off process, a historical ambient pressure value corresponding to a second time period from a previous vehicle power-off moment is determined as the standard pressure value.

4. The method according to claim 3, characterized in that: In response to the ambient pressure sensor failing during vehicle power-on, determining a historical ambient pressure value corresponding to a first time interval from the moment of the ambient pressure sensor failing as the standard pressure value includes: When it is detected that the ambient pressure sensor fails during the vehicle power-on process, obtaining a first historical voltage value sent by the ambient pressure sensor; Determine a first historical voltage value that is a first time away from the fault moment as a standard voltage value; The standard pressure value corresponding to the standard voltage value is determined based on a pre-stored mapping relationship table.

5. The method according to claim 3, characterized in that: In response to the environmental pressure sensor failing during the vehicle power-off process, determining a historical environmental pressure value corresponding to a second time interval from a previous power-off time of the vehicle as the standard pressure value includes: When it is detected that the ambient pressure sensor fails during the power-off process of the vehicle, a second historical voltage value sent by the ambient pressure sensor during the last power-on process of the vehicle is obtained; Determine a second historical voltage value that is a second time away from a previous power-off moment of the vehicle as a standard voltage value; The standard pressure value corresponding to the standard voltage value is determined based on a pre-stored mapping relationship table.

6. The method according to claim 1, characterized in that The correcting process of the standard pressure value based on the duration of the exhaust operation includes: In response to the continuous increase in the duration of the exhaust operation, the standard pressure value is controlled to cyclically decrease according to a first value.

7. The method according to claim 6, characterized in that In response to the continuous increase in the duration of the exhaust operation, controlling the standard pressure value to cyclically decrease according to a first value includes: Starting timing after the exhaust operation is performed for a first period of time; Every time it is detected that the timing exceeds the second threshold, the difference between the standard pressure value and the first value is determined as a new standard pressure value, and the timing is restarted.

8. A vacuum pump control device, characterized in that: include: A determination module, configured to determine a standard pressure value based on historical ambient pressure values ​​collected by the ambient pressure sensor when the ambient pressure sensor fails; a control module, configured to control the vacuum pump to perform an exhaust operation based on the standard pressure value and a system pressure value inside the vacuum pump after the vehicle performs a braking operation, wherein the system pressure value is collected by a system pressure sensor; The correction module is used to correct the standard pressure value based on the duration of the exhaust operation.

9. An electronic device, characterized in that: The electronic device comprises a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the electronic device executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

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