Self-checking method, device, medium and electronic equipment for air suspension system

Abstract

The present application provides a self-test method, device, medium and electronic equipment for an air suspension system, wherein the air suspension system includes four air springs, a controller, an air compressor, distribution valves and pipelines corresponding to the four air springs; the controller controls the air compressor and the distribution valve to inflate the corresponding air springs based on the pipelines; the method includes: judging whether the vehicle to be tested meets the test conditions, and if not, adjusting the vehicle to be tested; if the test conditions are met, selecting a target air spring in turn from the four air springs, and performing a target operation to obtain the self-test results of the four air springs; wherein the target operation includes: inflating the target air spring to obtain the self-test results of the target air spring based on the height change of the four air springs. The present application can realize the self-test function of the air spring system and improve the fault detection efficiency and fault detection accuracy.

Description

Technical Field

[0001] The present application belongs to the field of vehicle detection technology, and in particular relates to a self-detection method, device, medium and electronic equipment for an air suspension system. Background Art

[0002] The air suspension system is a suspension system that uses air springs instead of traditional steel springs. It is widely used in vehicles such as cars, buses and trucks. It includes four air springs, each corresponding to one wheel of the vehicle. The air suspension system uses an air pump or air compressor to inflate or deflate the air springs to adjust the vehicle's body height and suspension stiffness, thereby improving the ride's smoothness, comfort and handling. The air suspension system can automatically adjust the height according to the load or road conditions, reduce the impact of vibration on the vehicle body, and lower the body when driving at high speeds to improve fuel efficiency.

[0003] During the driving process of the vehicle, the air suspension system has an important impact on the safety of the vehicle. Therefore, it is necessary to regularly check the air suspension system and eliminate possible faults in a timely manner. However, since the air suspension system includes many parts, and the assembly and connection between the various parts are also relatively complicated, how to effectively improve the inspection efficiency and inspection accuracy of the air suspension system is a technical problem that technical personnel in this field need to solve urgently. Summary of the invention

[0004] The purpose of the present application is to provide a self-inspection method, device, equipment and storage medium for an air suspension system, which can effectively improve the inspection efficiency and inspection accuracy of the air suspension system.

[0005] In a first aspect, the present application provides a self-test method for an air suspension system, the air suspension system comprising four air springs, a controller, an air compressor, distribution valves and pipelines corresponding to the four air springs; the controller controls the air compressor and the distribution valve to inflate the corresponding air springs based on the pipeline; the method comprises:

[0006] Determine whether the vehicle to be detected meets the detection conditions, and if not, adjust the vehicle to be detected;

[0007] If the detection condition is met, target air springs are selected in sequence from the four air springs, and target operations are performed to obtain self-test results of the four air springs; wherein the target operations include:

[0008] The target air spring is inflated to obtain a self-test result of the target air spring based on height changes of the four air springs.

[0009] In an implementation of the first aspect, the detection condition includes:

[0010] the air suspension system is not in an electrical fault state;

[0011] The vehicle to be detected is in a stationary state; and

[0012] The vehicle body height of the vehicle to be detected is within the standard position range.

[0013] In an implementation of the first aspect, obtaining a self-test result of the target air spring based on the height changes of the four air springs includes:

[0014] Performing a first self-check based on the absolute values ​​of the height changes of the four air springs;

[0015] If the first self-check is passed, performing a second self-check based on the height change of the target air spring;

[0016] A self-test result of the target air spring is obtained based on the first self-test judgment or the second self-test judgment.

[0017] In an implementation of the first aspect, performing a first self-check based on the absolute values ​​of the height changes of the four air springs includes:

[0018] When the absolute value of the height change of the target air spring is greater than the absolute values ​​of the height changes of the other air springs, the first self-check is passed and the second self-check is performed;

[0019] When the absolute value of the height change of the target air spring is not greater than the absolute values ​​of the height changes of the other air springs, the first self-check fails, and the self-check result of the target air spring is a pipeline connection failure.

[0020] In an implementation of the first aspect, performing a second self-test judgment based on the height change of the target air spring includes: comparing the height change of the target air spring with a set threshold to obtain a self-test result of the target air spring; the set threshold includes a first set threshold, a second set threshold and a third set threshold.

[0021] In an implementation of the first aspect, the method includes:

[0022] When the height variation of the target air spring is not less than a first set threshold, the self-test result of the target air spring is obtained to be in a normal state.

[0023] When the height change of the target air spring is less than the first set threshold, the self-test result of the target air spring is a fault state.

[0024] In an implementation of the first aspect, the method includes: when the height change of the target air spring is less than the first set threshold and greater than a second set threshold, obtaining a self-test result of the target air spring as a general pipeline fault;

[0025] When the height variation of the target air spring is not greater than the second set threshold and not less than the third set threshold, obtaining a self-test result of the target air spring as a serious pipeline fault or a height sensor stuck fault;

[0026] When the height variation of the target air spring is less than the third set threshold, the self-test result of the target air spring is obtained as a height sensor installation failure.

[0027] In a second aspect, the present application provides a self-test device for an air suspension system, the device comprising:

[0028] A judgment module is configured to judge whether the vehicle to be detected meets the detection conditions;

[0029] A feedback module is configured to, when the vehicle to be detected does not meet the detection condition, feedback to the external adjustment device that the vehicle to be detected does not meet the detection condition, so that the external adjustment device adjusts the vehicle to be detected;

[0030] The self-test module is configured to select a target air spring from the four air springs in turn and perform a target operation to obtain self-test results of the four air springs when the vehicle to be tested meets the test conditions; wherein the target operation includes: inflating the target air spring to obtain the self-test results of the target air spring based on the height change of the four air springs.

[0031] In a third aspect, the present application provides an electronic device, comprising: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the electronic device performs the above-mentioned self-test method of the air suspension system.

[0032] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by an electronic device, implements the above-mentioned self-test method of the air suspension system.

[0033] As described above, the self-checking method, device, equipment and storage medium of the air suspension system described in the present application have the following beneficial effects: the present application can realize the self-checking function of the air suspension system, improve the fault detection efficiency and fault detection accuracy. In addition, the present application can also infer the possible fault type, improve the efficiency of troubleshooting and fault repair, and reduce the cost of troubleshooting and fault repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Shown is a schematic flow chart of a self-checking method for an air suspension system according to an embodiment of the present application in one embodiment.

[0035] Figure 2 Shown is a schematic flow chart of a self-checking method for an air suspension system according to an embodiment of the present application in one embodiment.

[0036] Figure 3 Shown is a schematic flow chart of a self-checking method for an air suspension system according to an embodiment of the present application in one embodiment.

[0037] Figure 4 Shown is a schematic structural diagram of a self-test system of an air suspension system according to an embodiment of the present application in one embodiment.

[0038] Figure 5 Shown is a schematic structural diagram of an electronic device of the present application in one embodiment. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0040] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0041] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] The air suspension system includes four air springs, a controller, an air compressor, distribution valves and pipelines corresponding to the four air springs, wherein each air spring corresponds to a wheel of the vehicle. In addition, the air suspension system includes an air tank, a height sensor, and a shock absorber. Among them, the air spring provides support and shock absorption by adjusting the amount of compressed air; the air compressor provides the required compressed air for the system, and the air tank stores air for use at any time; the distribution valve group controls the air flow and adjusts the inflation or deflation of the spring; the height sensor monitors the height of the vehicle body in real time to ensure that the suspension system automatically adjusts according to the load and road conditions; the controller is responsible for coordinating the work of each component and optimizing the suspension performance; the pipeline system connects each component to ensure smooth air transmission. In fact, the air suspension system works by controlling the air compressor and the distribution valve through the controller. The air compressor sends compressed air to the air tank through the pipeline, and then the corresponding distribution valve controls the corresponding pipeline to deliver air or exhaust air to the corresponding air spring to achieve inflation or exhaust for the corresponding air spring. Since the air suspension system has many key components, when the air suspension system needs to be tested, it takes a lot of time and manpower costs, and the accuracy of the test cannot be guaranteed, which will affect the driving safety of the vehicle and the development of the car company.

[0043] In order to at least solve the above problems, the embodiment of the present application provides a self-checking method of an air suspension system, which can realize the self-checking function of the air suspension system and improve the fault detection efficiency and fault detection accuracy. In addition, the present application can also infer the possible fault type, improve the efficiency of troubleshooting and fault repair, and reduce the cost of troubleshooting and fault repair.

[0044] The technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application.

[0045] The following embodiments of the present application provide a self-test method for an air suspension system, wherein the air suspension system includes four air springs, a controller, an air compressor, distribution valves and pipelines corresponding to the four air springs; the controller controls the air compressor and the distribution valve to inflate the corresponding air springs based on the pipeline; the self-test method can be implemented, for example, by a processor or a cloud server. Figure 1 The flowchart of the self-check method of the air suspension system according to the embodiment of the present application is shown as follows: Figure 1 As shown, the self-checking method of the air suspension system includes steps S1 to S3.

[0046] S1. Determine whether the vehicle to be detected meets the detection conditions.

[0047] Specifically, the detection conditions include: the air suspension system is not in an electrical fault state; the vehicle to be detected is in a stationary state; and the vehicle height of the vehicle to be detected is within a standard position range.

[0048] Before the air suspension system performs a self-test, it should be ensured that the air suspension system is not in an electrical fault state, the vehicle to be tested is stationary, and the vehicle height should be near the standard position.

[0049] S2. If the detection condition is not met, adjust the vehicle to be detected.

[0050] If the vehicle to be tested does not meet the test conditions, the self-test function will not be activated. Instead, the management personnel should be prompted to first adjust the vehicle until it meets the test conditions before the self-test function can be activated, thereby ensuring the safety and accuracy of the test.

[0051] S3. If the detection conditions are met, the four air springs are taken as target air springs in turn, and target operations are performed to obtain self-test results of the four air springs; wherein the target operation includes: inflating the target air springs to obtain self-test results of the target air springs based on height changes of the four air springs.

[0052] Specifically, when it is determined that the vehicle to be tested meets the test conditions, the self-test function can be turned on, and the self-test state of the air suspension system is in progress. At this time, the four air springs are used as target air springs in turn, and the target air springs are inflated to obtain the self-test results of the target air springs based on the height changes of the four air springs.

[0053] In some embodiments, the self-test process can be started with one click through the diagnostic instrument. When the self-test begins, for the target air spring (one of all air springs), the target operation includes inflating the target air spring by controlling the air compressor and the solenoid valve (distribution valve) corresponding to the target air spring, obtaining the height change of the four air springs after a period of inflation, and obtaining the self-test result of the target air spring based on the height change of the four air springs. In this way, the target operation is performed on all air springs in turn to obtain the self-test results of all air springs, so that it can be quickly determined whether there is a fault problem in the air suspension system equipped on the vehicle to be tested. That is, the target operation is performed on a single air spring, Figure 3 Shown is a flowchart of the target operation described in the embodiment of the present application.

[0054] Furthermore, when the target operation is performed on the target air spring and the self-test result of the target air spring is obtained, it is actually necessary to control the air compressor and the corresponding distribution valve through the controller to exhaust the target air spring, so as to adjust the vehicle height to the height before the target operation is performed. After the exhaust action is completed, the target air spring is reselected to perform the target operation. That is, for the target air spring, it is first inflated to perform the target operation, and after the self-test result is obtained, it needs to be exhausted.

[0055] Figure 2 The flowchart of the self-check method of the air suspension system according to the embodiment of the present application is shown as follows: Figure 2 As shown, for a target air spring, obtaining a self-test result of the target air spring based on the height changes of the four air springs includes steps S31 to S33.

[0056] S31. Perform a first self-check based on the absolute values ​​of the height changes of the four air springs.

[0057] Specifically, the process of executing the first self-check is to determine the relationship between the absolute value of the height change of the target air spring and the absolute values ​​of the height change of the other air springs.

[0058] Specifically, when the absolute value of the height change of the target air spring is greater than the absolute value of the height change of other air springs, the first self-check judgment is passed and the second self-check judgment is executed; when the absolute value of the height change of the target air spring is not greater than the absolute value of the height change of other air springs, the first self-check judgment fails, and the self-check result of the target air spring is a pipeline connection failure.

[0059] In fact, when the target air spring is inflated, the target air spring will be stretched, so that the entire vehicle is upward. At this time, even if the remaining air springs are not inflated, the remaining air springs will also be stretched because the vehicle is upward. That is, when the target air spring is inflated, all air springs will actually be stretched, that is, all air springs will change in height, and thus have a height change.

[0060] At this time, it should first be determined whether the absolute value of the height change of the target air spring is greater than the absolute value of the height change of the other air springs. If it is greater, it means that the target air spring is actually inflated, and the first self-check is passed; if it is not greater, it means that other air springs are inflated, but the target air spring is not inflated successfully, and the self-check result of the target air spring should be a pipeline connection failure.

[0061] Taking the air spring corresponding to the left front wheel as the target air spring as an example, if the absolute value of the height change of the left front air spring is <= Max [absolute value of the right front height change, absolute value of the left rear height change, absolute value of the right rear height change], then the feedback shows that the absolute value of the height change of the left front air spring is not the maximum value. At this time, the self-test result of the left front air spring is 1, indicating that the possible cause of the fault is a pipeline connection error.

[0062] S32: If the first self-check is passed, a second self-check is performed based on the height change of the target air spring.

[0063] Furthermore, if the absolute value of the height change of the target air spring in step S31 is greater than the absolute values ​​of the height change of the other air springs, when the first self-check is passed, a second self-check is performed based on the height change of the target air spring.

[0064] Specifically, the process of executing the second self-test judgment is: comparing the height change of the target air spring with a set threshold to obtain the self-test result of the target air spring; the set threshold includes a first set threshold, a second set threshold and a third set threshold.

[0065] Specifically, the relationship between the height change of the target air spring and the first set threshold is determined. When the height change of the target air spring is not less than the first set threshold, the self-test result of the target air spring is normal; when the height change of the target air spring is less than the first set threshold, the self-test result of the target air spring is a fault state.

[0066] In fact, the first set threshold should actually be a normal height change. In other words, if the target air spring is in a normal state, then after the target air spring is inflated, it should have a normal height change. Therefore, when it is determined that the pipeline connection is normal, that is, after the target air spring is inflated, it should be determined whether the height change of the target air spring is less than the first set threshold. If it is not less than, it means that the height change of the target air spring is normal, that is, the self-test result of the target air spring is normal. In some embodiments, the self-test result of the target air spring can be output as 5, which means that the self-test result of the target air spring is normal.

[0067] When the height change of the target air spring is less than the first set threshold, it means that the target air spring has not reached a normal height change after being inflated, and the target air spring should be in a fault state.

[0068] Further, when the height variation of the target air spring is less than the first set threshold and greater than the second set threshold, the self-test result of the target air spring is obtained as a general pipeline fault.

[0069] In some embodiments, if the height change of the target air spring is less than the first set threshold and greater than the second set threshold, it means that the height change of the target air spring is small. At this time, the self-test result output of the target air spring is 4, indicating that the possible cause of the fault is general blockage or general air leakage of the pipeline.

[0070] Further, when the height change of the target air spring is not greater than the second set threshold and not less than the third set threshold, the self-inspection result of the target air spring is obtained as a serious pipeline fault or a height sensor stuck fault.

[0071] In some embodiments, if the height change of the target air spring is not greater than the second set threshold and not less than the third set threshold, it means that the height change of the target air spring is very small. At this time, the self-test result of the target air spring is 3, indicating that the possible cause of the fault is serious blockage or serious leakage of the pipeline, or the height sensor is stuck.

[0072] Further, when the height variation of the target air spring is less than the third set threshold, the self-test result of the target air spring is obtained as a height sensor installation failure.

[0073] In some embodiments, if the height change of the target air spring is less than the third set threshold, it means that the height change of the target air spring is reverse (negative number). At this time, the self-test result output of the target air spring is 2, indicating that the possible cause of the fault is the incorrect installation of the height sensor in the target air spring.

[0074] S33. Obtain a self-test result of the target air spring based on the first self-test judgment or the second self-test judgment.

[0075] As described above, by comparing the absolute value of the height change of the target air spring with the absolute value of the height change of other air springs (first self-check judgment), and comparing the height change of the target air spring with the first set threshold, the second set threshold, and the third set threshold (second self-check judgment), it is possible to fully judge whether the target air spring has a fault and judge the possible cause of the fault. Thus, by sequentially executing the above judgment process with all air springs as the target air springs, the self-check results of all air springs can be obtained, that is, the self-check of the air suspension system is completed.

[0076] That is, the self-inspection method of the air suspension system provided in the present application is that when the vehicle to be inspected meets the inspection conditions, all air springs are inflated and lifted one by one, and then a self-inspection is performed based on the comparison of the height change, and the present application can judge different fault types according to the comparison results.

[0077] The specific process of the target operation will be further explained below by taking the air spring corresponding to the left front wheel as an example.

[0078] First, the air spring corresponding to the left front wheel is inflated by controlling the air compressor and the solenoid valve (distribution valve) corresponding to the target air spring. After a period of inflation, the height changes of all the air springs are obtained, that is, the height changes of the left front air spring, the height changes of the left rear air spring, the height changes of the right front air spring and the height changes of the right rear air spring.

[0079] After that, the first self-check is performed on the height changes of the four empty springs:

[0080] (1) If the absolute value of the height change of the left front air spring is <= Max [absolute value of the height change of the right front air spring, absolute value of the height change of the left rear air spring, absolute value of the height change of the right rear air spring], then the feedback indicates that the absolute value of the height change of the left front air spring is not the maximum value, and the output result of the left front air spring self-test is 1, indicating that the possible cause is a pipe connection error.

[0081] (2) If the absolute value of the height change of the left front air spring is greater than Max [absolute value of the height change of the right front, absolute value of the height change of the left rear, absolute value of the height change of the right rear], the first self-check is passed and the second self-check is performed as follows.

[0082] ① If the height change of the left front air spring is greater than or equal to the first set threshold, the height change of the left front air spring is fed back to be normal, and the self-test result of the left front air spring is output as 5, indicating that the self-test result of the left front air spring is normal.

[0083] ② If the second set threshold value < the height change of the left front air spring < the first set threshold value, the feedback shows that the height change of the left front air spring is small, and the output left front air spring self-test result is 4, which means that the cause of the fault may be general blockage or general leakage of the pipeline.

[0084] ③ If the third set threshold value <= the height change of the left front air spring <= the second set threshold value, the feedback shows that the height change of the left front air spring is very small, and the self-test result of the left front air spring is output as 3, indicating that the cause of the fault may be serious blockage or serious leakage in the pipeline or jamming of the height sensor.

[0085] ④ If the height change of the left front air spring is less than the third set threshold, the feedback of the height change of the left front air spring is reversed, and the self-test result of the left front air spring is output as 2, indicating that the cause of the fault may be the incorrect installation of the left front height sensor.

[0086] Therefore, the above embodiments of the present application can realize the self-checking function of the air suspension system, improve the fault detection efficiency and fault detection accuracy. In addition, the present application can also infer the possible fault type, improve the efficiency of fault elimination and fault repair, and reduce the cost of fault elimination and fault repair.

[0087] The protection scope of the self-test method of the air suspension system described in the embodiment of the present application is not limited to the execution order of the steps listed in the present embodiment. All solutions implemented by adding, reducing or replacing steps in the prior art based on the principles of the present application are included in the protection scope of the present application.

[0088] An embodiment of the present application also provides a self-inspection device for an air suspension system, which can implement the self-inspection method for the air suspension system described in the present application. However, the implementation device of the self-inspection device for the air suspension system described in the present application includes but is not limited to the structure of the self-inspection device for the air suspension system listed in the present embodiment. All structural deformations and replacements of the prior art made according to the principles of the present application are included in the protection scope of the present application.

[0089] Figure 4 The structure diagram of the self-test device of the air suspension system according to the embodiment of the present application is shown as follows: Figure 4 As shown, the self-checking device 4 of the air suspension system includes a judgment module 41 , a feedback module 42 and a self-checking module 43 .

[0090] A determination module 41 is configured to determine whether the vehicle to be detected meets the detection conditions;

[0091] A feedback module 42 is configured to, when the vehicle to be detected does not meet the detection condition, feedback to the external adjustment device that the vehicle to be detected does not meet the detection condition, so that the external adjustment device adjusts the vehicle to be detected;

[0092] The self-test module 43 is configured to select a target air spring from the four air springs in sequence and perform a target operation to obtain self-test results of the four air springs when the vehicle to be tested meets the test conditions; wherein the target operation includes:

[0093] The target air spring is inflated to obtain a self-test result of the target air spring based on height changes of the four air springs.

[0094] It should be noted that the structures and principles of the judgment module 41 , the feedback module 42 and the self-checking module 43 correspond one to one with the steps in the self-checking method of the air suspension system described above, and therefore will not be described in detail herein.

[0095] In the several embodiments provided in the present application, it should be understood that the disclosed system, device or method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules / units is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules or units, which can be electrical, mechanical or other forms.

[0096] The modules / units described as separate components may or may not be physically separated, and the components displayed as modules / units may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules / units may be selected according to actual needs to achieve the purpose of the embodiments of the present application. For example, the functional modules / units in the various embodiments of the present application may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0097] Those of ordinary skill in the art should further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0098] The present application embodiment also provides a computer-readable storage medium. A person of ordinary skill in the art can understand that all or part of the steps in the method for implementing the above embodiment can be completed by a program to instruct the processor, and the program can be stored in a computer-readable storage medium, and the storage medium is a non-transitory medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid-state hard disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof. The above storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid-state hard disk (SSD)), etc.

[0099] The embodiment of the present application further provides an electronic device, wherein the electronic device includes a processor and a memory.

[0100] The memory is used to store computer programs.

[0101] The memory includes: ROM, RAM, disk, USB flash drive, memory card or CD and other media that can store program codes.

[0102] The processor is connected to the memory and is used to execute the computer program stored in the memory so that the electronic device executes the above-mentioned self-test method of the air suspension system.

[0103] Preferably, the processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0104] like Figure 5 As shown, the electronic device of the present application is in the form of a general computing device. The components of the electronic device may include but are not limited to: one or more processors or processing units 51, a memory 52, and a bus 53 connecting different system components (including the memory 52 and the processing unit 51).

[0105] Bus 53 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus architectures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus and Peripheral Component Interconnect (PCI) bus.

[0106] Electronic devices typically include a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device, including volatile and non-volatile media, removable and non-removable media.

[0107] The memory 52 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 521 and / or cache memory 522. The electronic device may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 523 may be used to read and write non-removable, non-volatile magnetic media ( Figure 5 not shown, usually called a "hard drive"). Although Figure 5Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical medium) may be provided. In these cases, each drive may be connected to the bus 53 via one or more data medium interfaces. The memory 52 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present application.

[0108] A program / utility 524 having a set (at least one) of program modules 5241 may be stored, for example, in the memory 52, such program modules 5241 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 5241 generally perform the functions and / or methods of the embodiments described herein.

[0109] The electronic device may also communicate with one or more external devices (e.g., keyboards, pointing devices, displays, etc.), one or more devices that enable a user to interact with the electronic device, and / or any device that enables the electronic device to communicate with one or more other computing devices (e.g., network cards, modems, etc.). Such communication may be performed via input / output (I / O) interface 54. Furthermore, the electronic device may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via network adapter 55. Figure 5 As shown, the network adapter 55 communicates with other modules of the electronic device via the bus 53. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0110] The present application embodiment may also provide a computer program product, the computer program product including one or more computer instructions. When the computer instructions are loaded and executed on a computing device, the process or function described in the embodiment of the present application is generated in whole or in part. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer or data center.

[0111] When the computer program product is executed by a computer, the computer executes the method described in the above method embodiment. The computer program product may be a software installation package, and when the above method is required, the computer program product may be downloaded and executed on a computer.

[0112] The descriptions of the processes or structures corresponding to the above-mentioned figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0113] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A self-checking method for an air suspension system, characterized in that: The air suspension system includes four air springs, a controller, an air compressor, distribution valves and pipelines corresponding to the four air springs; The controller controls the air compressor and the distribution valve to inflate the corresponding air spring based on the pipeline; the method includes: Determine whether the vehicle to be detected meets the detection conditions, and if not, adjust the vehicle to be detected; If the detection condition is met, target air springs are selected in sequence from the four air springs, and target operations are performed to obtain self-test results of the four air springs; wherein the target operations include: The target air spring is inflated to obtain a self-test result of the target air spring based on height changes of the four air springs.

2. The self-checking method of the air suspension system according to claim 1, characterized in that: The detection conditions include: The air spring system is not in an electrically faulty state; The vehicle to be detected is in a stationary state; and The vehicle body height of the vehicle to be detected is within the standard position range.

3. The self-checking method of the air suspension system according to claim 1, characterized in that: Acquiring the self-test result of the target air spring based on the height changes of the four air springs includes: Performing a first self-check judgment based on the absolute values ​​of the height changes of the four air springs; If the first self-check is passed, performing a second self-check based on the height change of the target air spring; A self-test result of the target air spring is obtained based on the first self-test judgment or the second self-test judgment.

4. The self-checking method of the air suspension system according to claim 3, characterized in that: Performing a first self-check based on the absolute values ​​of the height changes of the four air springs includes: When the absolute value of the height change of the target air spring is greater than the absolute values ​​of the height changes of the other air springs, the first self-check is passed and the second self-check is performed; When the absolute value of the height change of the target air spring is not greater than the absolute values ​​of the height changes of the other air springs, the first self-check fails, and the self-check result of the target air spring is a pipeline connection failure.

5. The self-checking method of the air suspension system according to claim 3, characterized in that: Performing a second self-check based on the height change of the target air spring includes: The height change of the target air spring is compared with a set threshold to obtain a self-test result of the target air spring; the set threshold includes a first set threshold, a second set threshold and a third set threshold.

6. The self-checking method of the air suspension system according to claim 5, characterized in that: The method comprises: When the height variation of the target air spring is not less than a first set threshold, the self-test result of the target air spring is obtained to be in a normal state. When the height change of the target air spring is less than the first set threshold, the self-test result of the target air spring is a fault state.

7. The self-checking method of the air suspension system according to claim 5, characterized in that: The method comprises: When the height variation of the target air spring is less than the first set threshold and greater than the second set threshold, obtaining a self-test result of the target air spring as a general pipeline failure; When the height variation of the target air spring is not greater than the second set threshold and not less than the third set threshold, obtaining a self-test result of the target air spring as a serious pipeline fault or a height sensor stuck fault; When the height variation of the target air spring is less than the third set threshold, the self-test result of the target air spring is obtained as a height sensor installation failure.

8. A self-checking device for an air suspension system, characterized in that: The device comprises: A judgment module is configured to judge whether the vehicle to be detected meets the detection conditions; A feedback module is configured to, when the vehicle to be detected does not meet the detection condition, feedback to the external adjustment device that the vehicle to be detected does not meet the detection condition, so that the external adjustment device adjusts the vehicle to be detected; The self-test module is configured to select a target air spring from the four air springs in sequence and perform a target operation to obtain self-test results of the four air springs when the vehicle to be tested meets the test conditions; wherein the target operation includes: The target air spring is inflated to obtain a self-test result of the target air spring based on height changes of the four air springs.

9. An electronic device, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory, so that the electronic device executes the self-test method of the air suspension system according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by an electronic device, the self-checking method of the air suspension system according to any one of claims 1 to 7 is implemented.

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