Vehicle air spring air leakage detection method and system, storage medium and terminal

Abstract

The invention provides a vehicle air spring air leakage detection method and system, a storage medium and a terminal. The method comprises the steps that the real-time state of a vehicle is judged; when the vehicle is in the running state, whether air leakage exists in an air spring of the vehicle or not is judged based on the real-time range of the four-axis height of the vehicle; when the vehicle is in the static state, whether the vehicle is powered off is judged; when the vehicle is powered off and the vehicle controller is in a dormancy awakening state, judging whether the air spring of the vehicle leaks air or not according to the compensation times of the four-axis height after the first preset duration; and when the vehicle is not powered off and the difference value between the four-axis height of the vehicle and the target height is greater than a preset difference threshold value, judging whether the air spring of the vehicle leaks air or not according to the compensation times of the four-axis height within a second preset duration and the door state of the vehicle. According to the vehicle air spring air leakage detection method and system, the storage medium and the terminal, mechanical air leakage of the air spring can be accurately detected in the parking state and the driving state of the vehicle, and the safety of the vehicle is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle detection, and in particular to a vehicle air spring leakage detection method, system, storage medium and terminal. Background Art

[0002] As the number of new energy electric vehicles increases, consumers have more significant requirements for vehicle intelligence and comfort. For this reason, more and more new energy vehicles choose to use air suspension with air springs. One of the functions of this type of suspension is to raise and lower the height of the vehicle body in different working scenarios. For example, on highways, the vehicle body height will be actively lowered to reduce wind resistance and maintain vehicle stability. When passing through roads with extremely poor road conditions, the vehicle body height will be actively raised to ensure passability. Because air springs are important supporting parts of air suspensions, and their supporting performance is mainly supported by the air inside the springs, if air leakage occurs, driving safety will be greatly reduced. At the same time, air spring leakage can be divided into slow leakage and fast leakage.

[0003] There is no particularly good detection avoidance method in the existing technology in China. It basically relies on visual observation to see whether the height of the vehicle body changes after the vehicle stops. There is no software recognition method similar to this patent.

[0004] Public Content

[0005] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a vehicle air spring leakage detection method, system, storage medium and terminal, which can accurately detect air spring mechanical leakage when the vehicle is parked and driving, thereby ensuring the safety of vehicle driving.

[0006] In a first aspect, the present disclosure provides a method for detecting air leakage in a vehicle air spring, the method comprising the following steps: judging a real-time state of a vehicle, the real-time state comprising a stationary state and a driving state; when the vehicle is in the driving state, judging whether the air spring of the vehicle has an air leakage based on the real-time extreme difference of the four-axle height of the vehicle; when the vehicle is in the stationary state, judging whether the vehicle is powered off; when the vehicle is powered off and the vehicle controller is in a sleep-wake state, judging whether the air spring of the vehicle has an air leakage based on the number of compensations for the four-axle height after a first preset time period; when the vehicle is not powered off and the difference between the four-axle height of the vehicle and the target height is greater than a preset difference threshold, judging whether the air spring of the vehicle has an air leakage based on the number of compensations for the four-axle height within a second preset time period and the door state of the vehicle.

[0007] In an implementation of the first aspect, determining the real-time state of the vehicle includes the following steps:

[0008] Obtaining the real-time speed of the vehicle;

[0009] When the real-time vehicle speed is greater than zero, it is determined that the vehicle is in a driving state;

[0010] When the real-time vehicle speed is equal to zero, it is determined that the vehicle is in a stationary state.

[0011] In an implementation of the first aspect, judging whether the air spring of the vehicle has air leakage based on the real-time extreme difference of the four-axle height of the vehicle comprises the following steps:

[0012] Obtain the height of the four axes collected by the height sensors located on the four axes of the vehicle;

[0013] Calculating the real-time range of the four-axis height;

[0014] When the real-time extreme difference is not greater than a preset extreme difference threshold, it is determined that there is no air leakage in the air spring of the vehicle;

[0015] When the real-time extreme difference is greater than the preset extreme difference threshold, if the real-time extreme difference is greater than the preset extreme difference threshold after a third preset time period, it is determined that there is air leakage in the air spring of the vehicle.

[0016] In an implementation of the first aspect, judging whether the air spring of the vehicle has air leakage according to the number of compensation times of the four-axle height after a first preset time period includes the following steps:

[0017] Performing height compensation on the vehicle, and obtaining the number of times the height of the four axes is compensated after the first preset time period;

[0018] When the compensation times are greater than a first preset times threshold, it is determined that there is air leakage in the air spring of the vehicle.

[0019] In an implementation of the first aspect, judging whether the air spring of the vehicle has air leakage according to the number of compensation times of the four-axle height within a second preset time and the door state of the vehicle includes the following steps:

[0020] When the difference is greater than the preset difference threshold, performing height compensation on the vehicle;

[0021] Determining whether the vehicle door is in an open state within the second preset time period;

[0022] If the on state does not exist, obtaining the number of times the height of the four axes is compensated after the second preset time period;

[0023] When the compensation times are greater than a second preset times threshold, it is determined that there is air leakage in the air spring of the vehicle.

[0024] In an implementation manner of the first aspect, the first preset time length is 24 hours; and the second preset time length is 1 hour.

[0025] In an implementation manner of the first aspect, the preset range threshold is 60 mm.

[0026] In a second aspect, the present disclosure provides a vehicle air spring leakage detection system, the system comprising a first judgment module, a first detection module, a second judgment module, a second detection module and a third detection module;

[0027] The first judgment module is used to judge the real-time state of the vehicle, and the real-time state includes a stationary state and a driving state;

[0028] The first detection module is used to determine whether the air spring of the vehicle has leakage based on the real-time extreme difference of the four-axle height of the vehicle when the vehicle is in a driving state;

[0029] The second judgment module is used to judge whether the vehicle is powered off when the vehicle is in the stationary state;

[0030] The second detection module is used to determine whether the air spring of the vehicle has leakage according to the number of compensation times of the four-axle height after a first preset time when the vehicle is powered off and the vehicle controller is in a sleep wake-up state;

[0031] The third detection module is used to determine whether the air spring of the vehicle has air leakage according to the number of compensation times of the four-axle height within a second preset time length and the door status of the vehicle when the vehicle is not powered off and the difference between the four-axle height of the vehicle and the target height is greater than a preset difference threshold.

[0032] In a third aspect, the present disclosure provides a storage medium having a computer program stored thereon, which implements the above-mentioned vehicle air spring leakage detection method when executed by a device.

[0033] In a fourth aspect, the present disclosure provides a control terminal, the device comprising: a processor and a memory;

[0034] The memory is used to store computer programs;

[0035] The processor is used to execute the computer program stored in the memory so that the control terminal executes the above-mentioned vehicle air spring leakage detection method.

[0036] As described above, the vehicle air spring leakage detection method, system, storage medium and terminal disclosed in the present invention have the following beneficial effects:

[0037] (1) It can accurately detect the slow leakage of air springs when the vehicle is parked or driving, ensuring the safety of vehicle driving;

[0038] (2) Applicable to open and closed air suspension systems, extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Shown is a flow chart of a vehicle air spring leakage detection method disclosed in one embodiment;

[0040] Figure 2 Shown is a schematic structural diagram of a vehicle air spring leakage detection system in one embodiment of the present disclosure;

[0041] Figure 3 Shown is a schematic diagram of the structure of a terminal in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] The following is an explanation of the embodiments of the present disclosure by specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0043] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0044] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0046] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0047] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0048] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0049] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0050] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0051] The technical solutions in the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present disclosure.

[0052] like Figure 1 As shown, in one embodiment, the vehicle air spring leakage detection method disclosed in the present invention includes steps S1 to S5.

[0053] Step S1, determining the real-time state of the vehicle, wherein the real-time state includes a stationary state and a driving state.

[0054] Specifically, the real-time speed of the vehicle is obtained through a speed sensor. When the real-time speed is greater than zero, it is determined that the vehicle is in a driving state; when the real-time speed is equal to zero, it is determined that the vehicle is in a stationary state.

[0055] Step S2: when the vehicle is in a driving state, judging whether the air spring of the vehicle has air leakage based on the real-time extreme difference of the height of the four axes of the vehicle.

[0056] Specifically, for a vehicle in a driving state, the height of the four axles of the vehicle is collected by the height sensors arranged on the four axles of the vehicle, and the real-time range of the height of the four axles is calculated, wherein the real-time range refers to the difference between the maximum value and the minimum value of the height of the four axles.

[0057] When the real-time extreme difference is not greater than the preset extreme difference threshold, it is determined that there is no air leakage in the air spring of the vehicle, and the process returns to step S1. In one embodiment, the preset extreme difference threshold is 60 mm.

[0058] When the real-time extreme difference is greater than the preset extreme difference threshold, if the real-time extreme difference is greater than the preset extreme difference threshold after the third preset time, it is determined that the air spring of the vehicle has a leak. Wherein, when the real-time extreme difference is greater than the preset extreme difference threshold, the timing starts. After the third preset time, such as 20 seconds, it is determined again whether the real-time extreme difference is greater than the preset threshold. If so, it is determined that the air spring of the vehicle has a leak; if not, it is determined that the air spring of the vehicle does not have a leak, and the process returns to step S1.

[0059] Step S3: When the vehicle is in the stationary state, determine whether the vehicle is powered off.

[0060] The vehicle power failure means that the high voltage power supply of the vehicle is disconnected, that is, the vehicle is locked and powered off. Therefore, whether the vehicle is powered off is determined by determining whether the high voltage power supply of the vehicle is disconnected.

[0061] Step S4: when the vehicle is powered off and the vehicle controller is in a sleep-wake state, determine whether the air spring of the vehicle has air leakage according to the number of compensation times of the four-axle height after a first preset time.

[0062] Specifically, when the vehicle is in a power-off state, it is determined whether the vehicle is in a dormant awakening state. For example, it is determined whether the vehicle is in a dormant awakening state by the number of gas replenishment times within a preset time period, such as 24 hours.

[0063] If the vehicle is not in the sleep-wake state, it is determined that there is no air leakage in the air spring of the vehicle, and the process returns to step S1.

[0064] If the vehicle is in a dormant wake-up state, the height of the four axles of the vehicle is compensated, and the number of compensations is recorded, and timing is started at the same time. After the first preset time, such as 24 hours, the number of compensations for the height of the four axles after the first preset time is obtained, and it is determined whether the number of compensations is greater than the first preset number threshold. If so, it is determined that there is a leak in the air spring of the vehicle; if not, it is determined that there is no leak in the air spring of the vehicle, and the step S1 is returned. In one embodiment, the first preset number threshold is 8 times. Among them, height compensation means that when the vehicle is less than 5Km / h, the load changes or the air spring height decreases due to normal leakage of gas due to the long-term non-operation of the system, the system adjusts the vehicle height according to the height sensor signal to maintain the vehicle at the current target height. The height error is static ±5mm. Simply put, the height compensation means that the height of the vehicle body deviates from the expected height after the vehicle is powered off, and the height deviation is automatically compensated by controlling the inflation and deflation of the air suspension system.

[0065] Step S5: When the vehicle is not powered off and the difference between the four-axle height and the target height of the vehicle is greater than a preset difference threshold, determine whether the air spring of the vehicle has air leakage based on the number of compensation times of the four-axle height within a second preset time period and the door status of the vehicle.

[0066] Specifically, when the vehicle is not powered off, the difference between the height of the four axles of the vehicle and the target height is first calculated. When the difference is not greater than a preset difference threshold, such as 5 mm, it is determined that the air spring of the vehicle does not have any leakage, and the process returns to step S1. When the difference is greater than the preset difference threshold, the height of the four axles of the vehicle is compensated, and the number of compensations is recorded, and timing is started at the same time. After the second preset time, such as 1 hour, it is determined whether the door state is open within the second preset time. If there is an open state, it is determined that the air spring of the vehicle does not have any leakage, and the process returns to step S1. If there is no open state, the number of compensations for the height of the four axles after the second preset time is obtained, and it is determined whether the number of compensations is greater than the second preset number threshold. If so, it is determined that the air spring of the vehicle has any leakage; if not, it is determined that the air spring of the vehicle does not have any leakage, and the process returns to step S1. In one embodiment, the second preset number threshold is 3 times.

[0067] The protection scope of the vehicle air spring leakage detection method described in the embodiment of the present disclosure is not limited to the execution order of the steps listed in this embodiment. All solutions implemented by adding, reducing or replacing steps in the prior art based on the principles of the present disclosure are included in the protection scope of the present disclosure.

[0068] The embodiments of the present disclosure also provide a vehicle air spring leakage detection system, which can implement the vehicle air spring leakage detection method described in the present disclosure. However, the implementation device of the vehicle air spring leakage detection system described in the present disclosure includes but is not limited to the structure of the vehicle air spring leakage detection system listed in the embodiments. All structural deformations and replacements of the prior art made according to the principles of the present disclosure are included in the protection scope of the present disclosure.

[0069] like Figure 2 As shown, in one embodiment, the vehicle air spring leakage detection system disclosed in the present invention includes a first judgment module 21, a first detection module 22, a second judgment module 23, a second detection module 24 and a third detection module 25.

[0070] The first determination module 21 is used to determine the real-time state of the vehicle, which includes a stationary state and a driving state.

[0071] The first detection module 22 is connected to the first judgment module 21, and is used to judge whether the air spring of the vehicle has leakage based on the real-time extreme difference of the four-axle height of the vehicle when the vehicle is in a driving state.

[0072] The second judgment module 23 is connected to the first judgment module 21, and is used to judge whether the vehicle is powered off when the vehicle is in the stationary state.

[0073] The second detection module 24 is connected to the second judgment module 23, and is used to judge whether there is leakage in the air spring of the vehicle according to the number of compensation times of the four-axle height after a first preset time when the vehicle is powered off and the vehicle controller is in a sleep wake-up state.

[0074] The third detection module 25 is connected to the second judgment module 23, and is used to judge whether there is a leak in the air spring of the vehicle according to the number of compensation times of the four-axle height within a second preset time length and the door status of the vehicle when the vehicle is not powered off and the difference between the four-axle height of the vehicle and the target height is greater than the preset difference threshold.

[0075] Among them, the structures and principles of the first judgment module 21, the first detection module 22, the second judgment module 23, the second detection module 24 and the third detection module 25 correspond one by one to the steps in the above-mentioned vehicle air spring leakage detection method, so they are not repeated here.

[0076] In the several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices or methods 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. For example, 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 through some interfaces, indirect coupling or communication connection of devices or modules or units, which can be electrical, mechanical or other forms.

[0077] 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 disclosure. For example, the functional modules / units in the various embodiments of the present disclosure 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.

[0078] 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 terms of function in the above description. 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 disclosure.

[0079] The present disclosure 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 instructing the processor through a program, 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 disk (SSD)), etc.

[0080] The embodiment of the present disclosure also provides a control terminal, which includes a processor and a memory.

[0081] The memory is used to store computer programs.

[0082] The memory includes: ROM, RAM, disk, USB flash drive, memory card or CD and other media that can store program codes.

[0083] The processor is connected to the memory and is used to execute the computer program stored in the memory so that the control terminal executes the above-mentioned vehicle air spring leakage detection method.

[0084] 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.

[0085] like Figure 3As shown, the control terminal of the present disclosure is in the form of a general computing device. The components of the control terminal may include but are not limited to: one or more processors or processing units 31, a memory 32, and a bus 33 connecting different system components (including the memory 32 and the processing unit 31).

[0086] Bus 33 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.

[0087] The control terminal typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the control terminal, including volatile and non-volatile media, removable and non-removable media.

[0088] The memory 32 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 321 and / or cache memory 322. The control terminal may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the memory 32 may be used to read and write non-removable, non-volatile magnetic media ( Figure 3 not shown, usually called a "hard drive"). Although Figure 3 Not 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 media) may be provided. In these cases, each drive may be connected to the bus 33 via one or more data medium interfaces. The memory 32 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 disclosure.

[0089] A program / utility 324 having a set (at least one) of program modules 3241 may be stored, for example, in the memory 32, such program modules 3241 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 3241 generally perform the functions and / or methods of the embodiments described in the present disclosure.

[0090] The control terminal 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 control terminal, and / or any device that enables the control terminal 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 34. Furthermore, the control terminal 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 35. Figure 3 As shown, the network adapter 35 communicates with other modules of the control terminal via the bus 33. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the control terminal, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0091] The above embodiments are merely illustrative of the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present disclosure. 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 disclosure shall still be covered by the claims of the present disclosure.

Claims

1. A vehicle air spring leakage detection method, characterized in that: The method comprises the following steps: Determine the real-time state of the vehicle, wherein the real-time state includes a stationary state and a driving state; When the vehicle is in the driving state, judging whether the air spring of the vehicle has air leakage based on the real-time extreme difference of the height of the four axes of the vehicle; When the vehicle is in the stationary state, determining whether the vehicle is powered off; When the vehicle is powered off and the vehicle controller is in a dormant wake-up state, judging whether the air spring of the vehicle has leakage according to the number of compensation times of the four-axle height after a first preset time; When the vehicle is not powered off and the difference between the four-axle height of the vehicle and the target height is greater than a preset difference threshold, it is determined whether the air spring of the vehicle has air leakage based on the number of compensation times of the four-axle height within a second preset time period and the door status of the vehicle.

2. The vehicle air spring leakage detection method according to claim 1, characterized in that: Determining the real-time status of a vehicle includes the following steps: Obtaining the real-time speed of the vehicle; When the real-time vehicle speed is greater than zero, it is determined that the vehicle is in a driving state; When the real-time vehicle speed is equal to zero, it is determined that the vehicle is in a stationary state.

3. The vehicle air spring leakage detection method according to claim 1, characterized in that: Judging whether the air spring of the vehicle has leakage based on the real-time extreme difference of the four-axle height of the vehicle comprises the following steps: Obtain the height of the four axes collected by the height sensors located on the four axes of the vehicle; Calculating the real-time range of the four-axis height; When the real-time extreme difference is not greater than a preset extreme difference threshold, it is determined that there is no air leakage in the air spring of the vehicle; When the real-time extreme difference is greater than the preset extreme difference threshold, if the real-time extreme difference is greater than the preset extreme difference threshold after a third preset time period, it is determined that there is air leakage in the air spring of the vehicle.

4. The vehicle air spring leakage detection method according to claim 1, characterized in that: Judging whether the air spring of the vehicle has leakage according to the number of compensation times of the four-axle height after the first preset time period includes the following steps: Performing height compensation on the vehicle, and obtaining the number of compensation times of the height of the four axes after the first preset time period; when the number of compensation times is greater than a first preset number threshold, determining that the air spring of the vehicle has air leakage.

5. The vehicle air spring leakage detection method according to claim 1, characterized in that: Judging whether the air spring of the vehicle has air leakage according to the number of compensation times of the four-axle height within the second preset time and the door state of the vehicle comprises the following steps: When the difference is greater than the preset difference threshold, performing height compensation on the vehicle; Determining whether the vehicle door is in an open state within the second preset time period; If the on state does not exist, obtaining the number of times the height of the four axes is compensated after the second preset time period; When the compensation times are greater than a second preset times threshold, it is determined that there is air leakage in the air spring of the vehicle.

6. The vehicle air spring leakage detection method according to claim 1, characterized in that: The first preset time length is 24 hours; the second preset time length is 1 hour.

7. The vehicle air spring leakage detection method according to claim 1, characterized in that: The preset extreme difference threshold is 60 mm.

8. A vehicle air spring leakage detection system, characterized in that: The system includes a first judgment module, a first detection module, a second judgment module, a second detection module and a third detection module; The first judgment module is used to judge the real-time state of the vehicle, and the real-time state includes a stationary state and a driving state; The first detection module is used to determine whether the air spring of the vehicle has leakage based on the real-time extreme difference of the four-axle height of the vehicle when the vehicle is in a driving state; The second judgment module is used to judge whether the vehicle is powered off when the vehicle is in the stationary state; The second detection module is used to determine whether the air spring of the vehicle has leakage according to the number of compensation times of the four-axle height after a first preset time when the vehicle is powered off and the vehicle controller is in a sleep wake-up state; The third detection module is used to determine whether the air spring of the vehicle has air leakage according to the number of compensation times of the four-axle height within a second preset time length and the door status of the vehicle when the vehicle is not powered off and the difference between the four-axle height of the vehicle and the target height is greater than a preset difference threshold.

9. A storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the vehicle air spring leakage detection method according to any one of claims 1 to 7 is implemented.

10. A terminal, 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 terminal executes the vehicle air spring leakage detection method according to any one of claims 1 to 7.

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