Fault cause diagnosis method, device and equipment and computer readable storage medium

Abstract

A fault cause diagnosis method, device and equipment and a computer readable storage medium. The method comprises: when there is an abnormal shaft with a drop anomaly, sequentially troubleshooting each component causing the drop anomaly according to a preset detection sequence, wherein the preset detection sequence is to first troubleshoot a pressure relief valve corresponding to the abnormal shaft, if the pressure relief valve has no fault, to troubleshoot the whole gas circuit, and if the whole gas circuit has a fault, to troubleshoot a gas pump; and outputting a fault cause based on the troubleshooting result. Through the present application, the fault cause causing the shaft drop anomaly is diagnosed, the fault cause can be quickly and accurately determined, and no professional diagnostic instrument is needed, thereby saving the diagnosis cost.

Description

Technical Field

[0001] This application relates to the field of vehicle diagnostic technology, specifically to a method, apparatus, device, and computer-readable storage medium for diagnosing fault causes. Background Technology

[0002] Air suspension greatly improves ride comfort, making it increasingly popular in the automotive industry.

[0003] However, due to the large number of components involved in air suspension and its special assembly process, malfunctions may occur during use, causing the vehicle body to fail to lower properly, thus affecting driving safety. Therefore, there is an urgent need for a solution to diagnose the causes of malfunctions that prevent the vehicle body from lowering. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a method, apparatus, device, and computer-readable storage medium for diagnosing fault causes.

[0005] In a first aspect, embodiments of this application provide a method for diagnosing fault causes, the method comprising:

[0006] When there is an abnormal shaft with abnormal descent, the components causing the abnormal descent are checked in sequence according to a preset detection order. The preset detection order is to first check the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, the entire air circuit is checked. If the entire air circuit is faulty, the air pump is checked.

[0007] Based on the investigation results, output the cause of the fault.

[0008] In conjunction with the first aspect, in one implementation, the step of sequentially troubleshooting each component causing the abnormal drop according to a preset detection order includes:

[0009] Check if the pressure relief valve corresponding to the abnormal shaft is faulty;

[0010] If the pressure relief valve is not faulty, then check whether there is a fault in the entire air circuit, wherein the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump;

[0011] If there is no fault in the overall air circuit, then the pressure holding valve corresponding to the abnormal shaft is faulty;

[0012] If there is a fault in the entire air circuit, check if the air pump is faulty;

[0013] If the air pump is not faulty, then it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump.

[0014] In conjunction with the first aspect, in one embodiment, the step of detecting whether the pressure relief valve of the abnormal shaft is faulty includes:

[0015] Open the distribution valve and pressure relief valve corresponding to the abnormal shaft;

[0016] When the opening time reaches the preset time, check whether the air pressure of the air spring corresponding to the abnormal shaft is greater than the preset air pressure.

[0017] If the pressure is greater than the preset pressure, it is determined that the pressure relief valve of the abnormal shaft is faulty;

[0018] If the pressure is not greater than the preset air pressure, then the pressure relief valve of the abnormal shaft is determined to be fault-free.

[0019] In conjunction with the first aspect, in one embodiment, the step of detecting whether there is a fault in the overall gas path includes:

[0020] Test whether the air spring corresponding to the abnormal shaft can be properly inflated through the entire air circuit.

[0021] If it can be inflated normally, then it is confirmed that there is no fault in the overall air circuit.

[0022] If the air cannot be inflated normally, it indicates a malfunction in the air circuit.

[0023] In conjunction with the first aspect, in one embodiment, the step of detecting whether the air pump is malfunctioning includes:

[0024] The test is conducted to determine whether the air spring corresponding to the normal shaft can be properly inflated through another air path, which includes an air pump and a gas pipeline between the normal shaft and the air pump.

[0025] If the air pump can be inflated normally, then it is confirmed that there is no malfunction in the air pump.

[0026] In conjunction with the first aspect, in one implementation, the step of outputting the cause of the fault includes:

[0027] The cause of the fault is displayed on the vehicle's display screen.

[0028] And / or, announce the cause of the fault through the vehicle's loudspeaker.

[0029] In conjunction with the first aspect, in one implementation, the step of outputting the cause of the fault further includes:

[0030] Check whether the distance between the certified terminal and the vehicle is greater than the preset distance;

[0031] If the distance exceeds the preset limit, the cause of the fault will be sent to the authenticated terminal.

[0032] Secondly, embodiments of this application provide a fault cause diagnosis device, the fault cause diagnosis device comprising:

[0033] The detection module is used to troubleshoot each component causing the abnormal descent in sequence according to a preset detection order when there is an abnormal shaft with abnormal descent. The preset detection order is to first troubleshoot the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, then troubleshoot the entire air circuit. If the entire air circuit is faulty, then troubleshoot the air pump.

[0034] The output module is used to output the cause of the fault based on the investigation results.

[0035] In conjunction with the second aspect, in one implementation, the detection module is used for:

[0036] Check if the pressure relief valve corresponding to the abnormal shaft is faulty;

[0037] If the pressure relief valve is not faulty, then check whether there is a fault in the entire air circuit, wherein the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump;

[0038] If there is no fault in the overall air circuit, then the pressure holding valve corresponding to the abnormal shaft is faulty;

[0039] If there is a fault in the entire air circuit, check if the air pump is faulty;

[0040] If the air pump is not faulty, then it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump.

[0041] In conjunction with the second aspect, in one implementation, the detection module is used for:

[0042] Open the distribution valve and pressure relief valve corresponding to the abnormal shaft;

[0043] When the opening time reaches the preset time, check whether the air pressure of the air spring corresponding to the abnormal shaft is greater than the preset air pressure.

[0044] If the pressure is greater than the preset pressure, it is determined that the pressure relief valve of the abnormal shaft is faulty;

[0045] If the pressure is not greater than the preset air pressure, then the pressure relief valve of the abnormal shaft is determined to be fault-free.

[0046] In conjunction with the second aspect, in one implementation, the detection module is used for:

[0047] Test whether the air spring corresponding to the abnormal shaft can be properly inflated through the entire air circuit.

[0048] If it can be inflated normally, then it is confirmed that there is no fault in the overall air circuit.

[0049] If the air cannot be inflated normally, it indicates a malfunction in the air circuit.

[0050] In conjunction with the second aspect, in one implementation, the detection module is used for:

[0051] The test is conducted to determine whether the air spring corresponding to the normal shaft can be properly inflated through another air path, which includes an air pump and a gas pipeline between the normal shaft and the air pump.

[0052] If the air pump can be inflated normally, then it is confirmed that there is no malfunction in the air pump.

[0053] In conjunction with the second aspect, in one implementation, the output module is used for:

[0054] The cause of the fault is displayed on the vehicle's display screen.

[0055] And / or, announce the cause of the fault through the vehicle's loudspeaker.

[0056] In conjunction with the second aspect, in one implementation, the output module is used for:

[0057] Check whether the distance between the certified terminal and the vehicle is greater than the preset distance;

[0058] If the distance exceeds the preset limit, the cause of the fault will be sent to the authenticated terminal.

[0059] Thirdly, embodiments of this application provide a fault cause diagnosis device, which includes a processor, a memory, and a fault cause diagnosis program stored in the memory and executable by the processor, wherein when the fault cause diagnosis program is executed by the processor, it implements the steps of the fault cause diagnosis method as described in the first aspect.

[0060] Fourthly, embodiments of this application provide a computer-readable storage medium storing a fault cause diagnosis program, wherein when the fault cause diagnosis program is executed by a processor, it implements the steps of the fault cause diagnosis method as described in the first aspect.

[0061] The beneficial effects of the technical solutions provided in this application include:

[0062] In this embodiment, when an abnormal shaft exhibits abnormal descent, the components causing the abnormal descent are sequentially checked according to a preset detection sequence. This preset detection sequence involves first checking the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, the entire air circuit is checked. If the entire air circuit is faulty, the air pump is checked. Based on the results of the checks, the cause of the fault is output. This embodiment enables the diagnosis of faults causing abnormal shaft descent, quickly and accurately determining the cause without the need for specialized diagnostic instruments, thus saving diagnostic costs. Attached Figure Description

[0063] Figure 1 This is a flowchart illustrating an embodiment of the fault cause diagnosis method of this application;

[0064] Figure 2 for Figure 1 A detailed flowchart of step S10;

[0065] Figure 3 This is a functional module diagram of an embodiment of the fault cause diagnosis device of this application;

[0066] Figure 4 This is a schematic diagram of the hardware structure of the fault diagnosis device involved in the embodiments of this application. Detailed Implementation

[0067] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0068] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0069] Firstly, embodiments of this application provide a method for diagnosing fault causes.

[0070] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating an embodiment of the fault cause diagnosis method of this application. Figure 1 As shown, the methods for diagnosing fault causes include:

[0071] Step S10: When there is an abnormal shaft with abnormal descent, troubleshoot each component that causes the abnormal descent in sequence according to the preset detection order. The preset detection order is to first troubleshoot the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, troubleshoot the entire air circuit. If the entire air circuit is faulty, troubleshoot the air pump.

[0072] In this embodiment, the example uses axles including the front and rear axles. During the process of controlling the front axle's descent, it is detected whether the front axle is an abnormal axle with abnormal descent. Similarly, during the process of controlling the rear axle's descent, it is detected whether the rear axle is an abnormal axle with abnormal descent. The process of controlling the front axle's descent is equivalent to controlling the deflation of the air springs associated with the front axle; similarly, the process of controlling the rear axle's descent is equivalent to controlling the deflation of the air springs associated with the rear axle. If the front axle's descent is abnormal, it indicates an abnormal deflation of the air springs associated with the front axle; if the rear axle's descent is abnormal, it indicates an abnormal deflation of the air springs associated with the rear axle; if the deflation of the air springs associated with either the front or rear axle is abnormal, it indicates an abnormality in the air suspension system, thus requiring fault diagnosis. Furthermore, it is easy to understand that when either axle descents abnormally, it will cause uneven vehicle height, seriously affecting driving safety. Therefore, when an abnormal axle is detected, fault diagnosis can help resolve the fault more quickly and ensure driving safety.

[0073] Taking the front axle as an example, after triggering the command to lower the front axle by N millimeters, a timer begins. When the timer reaches X seconds, it checks whether the front axle has lowered by N millimeters. If it has, the front axle is considered to have lowered normally and is a normal axle. Conversely, if the front axle has not lowered by N millimeters after X seconds, it is considered to be an abnormal axle. The rear axle is judged in the same way as the front axle, and will not be elaborated here.

[0074] The relationship between descent height and duration is established beforehand. For example, for a vehicle with a normal air suspension system, the time required for the front / rear axle to descend to different heights is recorded. For each height, the experiment is repeated multiple times, resulting in multiple durations for that height. The longest duration is taken as the duration for that height. This process is repeated for each height to obtain the relationship between descent height and duration. Of course, this process can be performed on multiple vehicles with normal air suspension systems to obtain a more representative relationship between descent height and duration, thus avoiding misjudging a normal axle as an abnormal axle with abnormal descent.

[0075] When an abnormal shaft is identified as exhibiting descent anomalies, further troubleshooting of the individual components causing the anomaly is required. For example, if the front shaft is the abnormal shaft, components causing the abnormal descent of the front shaft include the air pump, the gas pipeline between the air pump and the front shaft, the pressure relief valve corresponding to the front shaft, the pressure holding valve corresponding to the front shaft, and so on. It is evident that many components can cause abnormal shaft descent. If the troubleshooting sequence is unreasonable, it will lead to an inability to quickly determine the cause of the fault, or even to correctly determine the cause. Therefore, in this embodiment, the components causing the descent anomalies are troubleshooted sequentially according to a preset detection order. This preset detection order can effectively improve the efficiency and effectiveness of troubleshooting.

[0076] The preset detection sequence is to first check the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, then check the entire air circuit. If the entire air circuit is faulty, then check the air pump.

[0077] It should be noted that when the pressure relief valve is faulty, the troubleshooting is completed and no further troubleshooting actions are taken; when there is no fault in the gas circuit as a whole, the troubleshooting is completed and no further troubleshooting actions are taken.

[0078] Step S20: Based on the investigation results, output the cause of the fault.

[0079] In this embodiment, the preset detection order is to detect component A first, then component B, and finally component C. That is, component A is detected first. If component A is faulty, the result is "Component A is faulty," and the cause of the fault is output. If component A is not faulty, component B is detected. If component B is faulty, the result is "Component B is faulty," and the cause of the fault is output. If component B is not faulty, component C is detected. If component C is faulty, the result is "Component C is faulty," and the cause of the fault is output.

[0080] In this embodiment, when an abnormal shaft descent occurs, the components causing the abnormal descent are checked sequentially according to a preset detection order; based on the results, the cause of the fault is output. This embodiment enables the diagnosis of faults causing abnormal shaft descent, quickly and accurately determining the cause without the need for specialized diagnostic instruments, thus saving diagnostic costs.

[0081] Furthermore, in one embodiment, the step of sequentially troubleshooting each component causing the abnormal drop according to a preset detection order includes:

[0082] Check if the pressure relief valve corresponding to the abnormal shaft is faulty;

[0083] If the pressure relief valve is not faulty, then check whether there is a fault in the entire air circuit, wherein the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump;

[0084] If there is no fault in the overall air circuit, then the pressure holding valve corresponding to the abnormal shaft is faulty;

[0085] If there is a fault in the entire air circuit, check if the air pump is faulty;

[0086] If the air pump is not faulty, then it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump.

[0087] In this embodiment, refer to Figure 2 , Figure 2 for Figure 1 A detailed flowchart of step S10. (See attached diagram.) Figure 2 As shown, first check if the pressure relief valve corresponding to the abnormal shaft is faulty. If the pressure relief valve is faulty, the troubleshooting process ends. If the pressure relief valve is not faulty, further check if there is a fault in the entire air circuit. If there is no fault in the entire air circuit, it can be directly determined that the pressure holding valve corresponding to the abnormal shaft is faulty, and the troubleshooting process ends. If there is a fault in the entire air circuit, since the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump, it is necessary to further determine whether the fault is with the air pump or the gas pipeline between the abnormal shaft and the air pump. Therefore, check if there is a fault in the air pump. If the air pump is faulty, the troubleshooting process ends. If the air pump is not faulty, it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump, and the troubleshooting process ends.

[0088] In this embodiment of the application, the preset detection sequence shown above can effectively improve the efficiency and effectiveness of troubleshooting.

[0089] Furthermore, in one embodiment, the step of detecting whether the pressure relief valve of the abnormal shaft is faulty includes:

[0090] Open the distribution valve and pressure relief valve corresponding to the abnormal shaft; when the opening time reaches the preset time, check whether the air pressure of the air spring corresponding to the abnormal shaft is greater than the preset air pressure; if it is greater than the preset air pressure, it is determined that the pressure relief valve of the abnormal shaft is faulty; if it is not greater than the preset air pressure, it is determined that the pressure relief valve of the abnormal shaft is not faulty.

[0091] In this embodiment, for a single shaft, under normal circumstances, when its distribution valve and pressure relief valve are opened, the gas in its corresponding air spring is released, resulting in a relatively low air pressure in the air spring. Based on this principle, after opening the distribution valve and pressure relief valve corresponding to the abnormal shaft, if the air pressure of the air spring corresponding to the abnormal shaft is still greater than the preset air pressure after the opening time reaches the preset time, it indicates that the pressure relief valve is not connected to the atmosphere, thus confirming that the pressure relief valve of the abnormal shaft is faulty. At this point, the troubleshooting can be completed, and the subsequent fault output could be that the pressure relief valve of the abnormal shaft is stuck. Conversely, if the air pressure of the air spring corresponding to the abnormal shaft is not greater than the preset air pressure, it indicates that the gas in the air spring corresponding to the abnormal shaft is being discharged normally, thus confirming that the pressure relief valve of the abnormal shaft is not faulty. At this point, the next stage of troubleshooting needs to be initiated, namely, checking whether there is a fault in the overall air circuit.

[0092] The preset air pressure can be set according to the actual situation, for example, 3 bar.

[0093] Furthermore, in one embodiment, the step of detecting whether there is a fault in the overall gas path includes:

[0094] Check whether the air spring corresponding to the abnormal shaft can be normally inflated through the entire air circuit; if it can be normally inflated, it is determined that there is no fault in the entire air circuit; if it cannot be normally inflated, it is determined that there is a fault in the entire air circuit.

[0095] In this embodiment, for one shaft, under normal circumstances, after opening the air pump and its corresponding distribution valve, the gas generated by the air pump can enter the air spring through the gas pipeline between the shaft and the air pump, thereby inflating the air spring and increasing the air pressure / height of the air spring. Based on this, the air pipe is inserted into the pressure-holding valve, opening the valve core and moving downwards to disengage from the O-ring. This opens the entire pipeline from the air pump to the air spring, allowing for inflation and deflation. If the air pipe is not inserted deeply enough, the valve core will be stuck to the O-ring, preventing the gas inside the air spring from escaping and thus preventing deflation; however, the high-pressure gas from the air pump can compress the valve core, forcing it open and allowing it to enter the air spring, achieving inflation. Based on this principle, by opening the air pump and the distribution valve corresponding to the abnormal shaft, after a period of time, check whether the air pressure or height of the air spring corresponding to the abnormal shaft is normal. If normal, it confirms that the air spring corresponding to the abnormal shaft can be properly inflated through the entire air circuit, thus confirming that the entire air circuit is not faulty. The cause of the abnormal shaft descent can then be determined as the valve core and O-ring being stuck together, preventing the air in the air spring from escaping and releasing air. This indicates a fault in the pressure-holding valve corresponding to the abnormal shaft, at which point the troubleshooting can be completed, and the subsequent fault could be due to the pipe port corresponding to the abnormal shaft not being properly installed. Conversely, if normal inflation fails, a fault in the entire air circuit is confirmed. Since the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump, further investigation is needed to determine whether the fault lies with the air pump or the gas pipeline between the abnormal shaft and the air pump.

[0096] Furthermore, in one embodiment, the step of detecting whether the air pump is faulty includes:

[0097] The test checks whether the air spring corresponding to the normal shaft can be properly inflated through another air path, which includes an air pump and a gas pipeline between the normal shaft and the air pump. If it can be properly inflated, it is determined that the air pump is not faulty.

[0098] In this embodiment, since directly checking for faults in the gas pipeline between the abnormal shaft and the air pump is quite difficult, the approach can be to check if the air pump is functioning correctly. Specifically, check if the air spring corresponding to the normal shaft can be normally inflated through another air path. If it can be inflated normally, the air pump is functioning correctly, and the fault lies in the gas pipeline between the abnormal shaft and the air pump. At this point, the troubleshooting can be completed, and the subsequent fault diagnosis could be a point of detachment in the gas pipeline between the abnormal shaft and the air pump. Conversely, if it cannot be inflated normally, the air pump is faulty. The normal shaft is the shaft that descends without abnormality.

[0099] Furthermore, in one embodiment, the step of outputting the cause of the fault includes:

[0100] The cause of the fault is displayed on the vehicle's display screen.

[0101] And / or, announce the cause of the fault through the vehicle's loudspeaker.

[0102] In this embodiment, after obtaining the investigation results, it is necessary to output the cause of the malfunction so that relevant personnel are aware of the cause of the abnormal descent. There are many ways to output the cause of the malfunction, such as displaying it on the vehicle's display screen using text, icons, or other means; or broadcasting it via voice, that is, broadcasting the cause of the malfunction through the vehicle's loudspeaker.

[0103] Furthermore, in one embodiment, the step of outputting the cause of the fault further includes:

[0104] Check whether the distance between the certified terminal and the vehicle is greater than the preset distance;

[0105] If the distance exceeds the preset limit, the cause of the fault will be sent to the authenticated terminal.

[0106] In this embodiment, the car owner typically interacts with the vehicle's infotainment system via an app on their terminal. In this case, the car owner's terminal is an authenticated terminal. The terminal grants the infotainment system permission to obtain location information, allowing the infotainment system (the executing entity in this embodiment) to acquire the terminal's location. This location information, combined with the vehicle's location data, determines the distance between the authenticated terminal and the vehicle, and compares it to a preset distance. If the distance is greater than the preset distance, it strongly suggests that the car owner is not currently near the vehicle, and any notification displayed on the infotainment system's screen or through the speaker will not be received by the car owner. Therefore, when the distance between the authenticated terminal and the vehicle is detected to be greater than the preset distance, a fault cause is sent to the authenticated terminal, allowing the user on the authenticated terminal to promptly understand the cause of the abnormal descent.

[0107] Secondly, embodiments of this application also provide a fault cause diagnosis device.

[0108] In one embodiment, reference is made to Figure 3 , Figure 3 This is a functional module diagram of an embodiment of the fault cause diagnosis device of this application. Figure 3 As shown, the fault diagnosis device includes:

[0109] The detection module 10 is used to troubleshoot each component that causes the abnormal descent in sequence according to a preset detection order when there is an abnormal shaft with abnormal descent. The preset detection order is to first troubleshoot the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, then troubleshoot the entire air circuit. If the entire air circuit is faulty, then troubleshoot the air pump.

[0110] Output module 20 is used to output the cause of the fault based on the investigation results.

[0111] Furthermore, in one embodiment, the detection module 10 is used for:

[0112] Check if the pressure relief valve corresponding to the abnormal shaft is faulty;

[0113] If the pressure relief valve is not faulty, then check whether there is a fault in the entire air circuit, wherein the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump;

[0114] If there is no fault in the overall air circuit, then the pressure holding valve corresponding to the abnormal shaft is faulty;

[0115] If there is a fault in the entire air circuit, check if the air pump is faulty;

[0116] If the air pump is not faulty, then it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump.

[0117] Furthermore, in one embodiment, the detection module 10 is used for:

[0118] Open the distribution valve and pressure relief valve corresponding to the abnormal shaft;

[0119] When the opening time reaches the preset time, check whether the air pressure of the air spring corresponding to the abnormal shaft is greater than the preset air pressure.

[0120] If the pressure is greater than the preset pressure, it is determined that the pressure relief valve of the abnormal shaft is faulty;

[0121] If the pressure is not greater than the preset air pressure, then the pressure relief valve of the abnormal shaft is determined to be fault-free.

[0122] Furthermore, in one embodiment, the detection module 10 is used for:

[0123] Test whether the air spring corresponding to the abnormal shaft can be properly inflated through the entire air circuit.

[0124] If it can be inflated normally, then it is confirmed that there is no fault in the overall air circuit.

[0125] If the air cannot be inflated normally, it indicates a malfunction in the air circuit.

[0126] Furthermore, in one embodiment, the detection module 10 is used for:

[0127] The test is conducted to determine whether the air spring corresponding to the normal shaft can be properly inflated through another air path, which includes an air pump and a gas pipeline between the normal shaft and the air pump.

[0128] If the air pump can be inflated normally, then it is confirmed that there is no malfunction in the air pump.

[0129] Furthermore, in one embodiment, the output module 20 is used for:

[0130] The cause of the fault is displayed on the vehicle's display screen.

[0131] And / or, announce the cause of the fault through the vehicle's loudspeaker.

[0132] Furthermore, in one embodiment, the output module 20 is used for:

[0133] Check whether the distance between the certified terminal and the vehicle is greater than the preset distance;

[0134] If the distance exceeds the preset limit, the cause of the fault will be sent to the authenticated terminal.

[0135] The functions of each module in the above-mentioned fault cause diagnosis device correspond to the steps in the above-mentioned fault cause diagnosis method embodiment, and their functions and implementation processes will not be described in detail here.

[0136] Thirdly, embodiments of this application provide a fault cause diagnosis device, which can be a device with data processing capabilities such as a personal computer (PC), a laptop computer, or a server.

[0137] Reference Figure 4 , Figure 4 This is a schematic diagram of the hardware structure of the fault diagnosis device involved in the embodiments of this application. In the embodiments of this application, the fault diagnosis device may include a processor, a memory, a communication interface, and a communication bus.

[0138] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0139] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting internal components of the fault diagnosis equipment, as well as interfaces used for interconnecting the fault diagnosis equipment with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0140] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0141] The processor can be a general-purpose processor, which can call fault diagnosis programs stored in memory and execute the fault diagnosis methods provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU).

[0142] When the fault diagnosis program is invoked, the following steps are executed:

[0143] When there is an abnormal shaft with abnormal descent, the components causing the abnormal descent are checked in sequence according to a preset detection order. The preset detection order is to first check the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, the entire air circuit is checked. If the entire air circuit is faulty, the air pump is checked.

[0144] Based on the investigation results, output the cause of the fault.

[0145] Furthermore, in one embodiment, when the fault cause diagnosis program is invoked, the following steps are performed:

[0146] Check if the pressure relief valve corresponding to the abnormal shaft is faulty;

[0147] If the pressure relief valve is not faulty, then check whether there is a fault in the entire air circuit, wherein the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump;

[0148] If there is no fault in the overall air circuit, then the pressure holding valve corresponding to the abnormal shaft is faulty;

[0149] If there is a fault in the entire air circuit, check if the air pump is faulty;

[0150] If the air pump is not faulty, then it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump.

[0151] Furthermore, in one embodiment, when the fault cause diagnosis program is invoked, the following steps are performed:

[0152] Open the distribution valve and pressure relief valve corresponding to the abnormal shaft;

[0153] When the opening time reaches the preset time, check whether the air pressure of the air spring corresponding to the abnormal shaft is greater than the preset air pressure.

[0154] If the pressure is greater than the preset pressure, it is determined that the pressure relief valve of the abnormal shaft is faulty;

[0155] If the pressure is not greater than the preset air pressure, then the pressure relief valve of the abnormal shaft is determined to be fault-free.

[0156] Furthermore, in one embodiment, when the fault cause diagnosis program is invoked, the following steps are performed:

[0157] Test whether the air spring corresponding to the abnormal shaft can be properly inflated through the entire air circuit.

[0158] If it can be inflated normally, then it is confirmed that there is no fault in the overall air circuit.

[0159] If the air cannot be inflated normally, it indicates a malfunction in the air circuit.

[0160] Furthermore, in one embodiment, when the fault cause diagnosis program is invoked, the following steps are performed:

[0161] The test is conducted to determine whether the air spring corresponding to the normal shaft can be properly inflated through another air path, which includes an air pump and a gas pipeline between the normal shaft and the air pump.

[0162] If the air pump can be inflated normally, then it is confirmed that there is no malfunction in the air pump.

[0163] Furthermore, in one embodiment, when the fault cause diagnosis program is invoked, the following steps are performed:

[0164] The cause of the fault is displayed on the vehicle's display screen.

[0165] And / or, announce the cause of the fault through the vehicle's loudspeaker.

[0166] Furthermore, in one embodiment, when the fault cause diagnosis program is invoked, the following steps are performed:

[0167] Check whether the distance between the certified terminal and the vehicle is greater than the preset distance;

[0168] If the distance exceeds the preset limit, the cause of the fault will be sent to the authenticated terminal.

[0169] Specific embodiments of the steps performed can be found in the various embodiments of the fault cause diagnosis method of this application, and will not be repeated here.

[0170] Those skilled in the art will understand that Figure 4The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0171] Fourthly, embodiments of this application also provide a computer-readable storage medium.

[0172] The present application provides a computer-readable storage medium storing a fault cause diagnosis program, wherein when the fault cause diagnosis program is executed by a processor, it performs the following steps:

[0173] When there is an abnormal shaft with abnormal descent, the components causing the abnormal descent are checked in sequence according to a preset detection order. The preset detection order is to first check the pressure relief valve corresponding to the abnormal shaft. If the pressure relief valve is not faulty, the entire air circuit is checked. If the entire air circuit is faulty, the air pump is checked.

[0174] Based on the investigation results, output the cause of the fault.

[0175] Furthermore, in one embodiment, when the fault cause diagnosis program is executed by the processor, the following steps are implemented:

[0176] Check if the pressure relief valve corresponding to the abnormal shaft is faulty;

[0177] If the pressure relief valve is not faulty, then check whether there is a fault in the entire air circuit, wherein the entire air circuit includes the air pump and the gas pipeline between the abnormal shaft and the air pump;

[0178] If there is no fault in the overall air circuit, then the pressure holding valve corresponding to the abnormal shaft is faulty;

[0179] If there is a fault in the entire air circuit, check if the air pump is faulty;

[0180] If the air pump is not faulty, then it is determined that there is a fault in the gas pipeline between the abnormal shaft and the air pump.

[0181] Furthermore, in one embodiment, when the fault cause diagnosis program is executed by the processor, the following steps are implemented:

[0182] Open the distribution valve and pressure relief valve corresponding to the abnormal shaft;

[0183] When the opening time reaches the preset time, check whether the air pressure of the air spring corresponding to the abnormal shaft is greater than the preset air pressure.

[0184] If the pressure is greater than the preset pressure, it is determined that the pressure relief valve of the abnormal shaft is faulty;

[0185] If the pressure is not greater than the preset air pressure, then the pressure relief valve of the abnormal shaft is determined to be fault-free.

[0186] Furthermore, in one embodiment, when the fault cause diagnosis program is executed by the processor, the following steps are implemented:

[0187] Test whether the air spring corresponding to the abnormal shaft can be properly inflated through the entire air circuit.

[0188] If it can be inflated normally, then it is confirmed that there is no fault in the overall air circuit.

[0189] If the air cannot be inflated normally, it indicates a malfunction in the air circuit.

[0190] Furthermore, in one embodiment, when the fault cause diagnosis program is executed by the processor, the following steps are implemented:

[0191] The test is conducted to determine whether the air spring corresponding to the normal shaft can be properly inflated through another air path, which includes an air pump and a gas pipeline between the normal shaft and the air pump.

[0192] If the air pump can be inflated normally, then it is confirmed that there is no malfunction in the air pump.

[0193] Furthermore, in one embodiment, when the fault cause diagnosis program is executed by the processor, the following steps are implemented:

[0194] The cause of the fault is displayed on the vehicle's display screen.

[0195] And / or, announce the cause of the fault through the vehicle's loudspeaker.

[0196] Furthermore, in one embodiment, when the fault cause diagnosis program is executed by the processor, the following steps are implemented:

[0197] Check whether the distance between the certified terminal and the vehicle is greater than the preset distance;

[0198] If the distance exceeds the preset limit, the cause of the fault will be sent to the authenticated terminal.

[0199] Specific embodiments of the steps implemented when the fault cause diagnosis procedure is executed can be found in the various embodiments of the fault cause diagnosis method of this application, and will not be repeated here.

[0200] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0201] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0202] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0203] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0204] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0205] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0206] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A failure cause diagnosis method characterized by comprising: The fault cause diagnosis method comprises: When there is an abnormal axis of a drop anomaly, sequentially troubleshooting each component causing the drop anomaly according to a preset detection sequence, wherein the preset detection sequence is to first troubleshoot the pressure relief valve corresponding to the abnormal axis, if the pressure relief valve has no fault, then to troubleshoot the gas circuit as a whole, if the gas circuit as a whole has a fault, then to troubleshoot the air pump; Based on the troubleshooting result, output the fault cause; The step of sequentially troubleshooting each component causing the drop anomaly according to the preset detection sequence comprises: Detecting whether the pressure relief valve corresponding to the abnormal axis has a fault; If the pressure relief valve has no fault, detecting whether the gas circuit as a whole has a fault, wherein the gas circuit as a whole comprises the air pump and the gas pipeline between the abnormal axis and the air pump; If the gas circuit as a whole has no fault, determining that the pressure relief valve corresponding to the abnormal axis has a fault; If the gas circuit as a whole has a fault, detecting whether the air pump has a fault; If the air pump has no fault, determining that the gas pipeline between the abnormal axis and the air pump has a fault; The step of detecting whether the pressure relief valve corresponding to the abnormal axis has a fault comprises: Opening the distribution valve and the pressure relief valve corresponding to the abnormal axis; When the opening duration reaches a preset duration, detecting whether the air pressure of the air spring corresponding to the abnormal axis is greater than a preset air pressure; If greater than the preset air pressure, determining that the pressure relief valve corresponding to the abnormal axis has a fault; If not greater than the preset air pressure, determining that the pressure relief valve corresponding to the abnormal axis has no fault.

2. The failure cause diagnosing method according to Claim 1, characterized by, The step of detecting whether the gas circuit as a whole has a fault comprises: Detecting whether the air spring corresponding to the abnormal axis can be normally inflated through the gas circuit as a whole; If can be normally inflated, determining that the gas circuit as a whole has no fault; If cannot be normally inflated, determining that the gas circuit as a whole has a fault.

3. The failure cause diagnosing method according to Claim 1, characterized by, The step of detecting whether the air pump has a fault comprises: Detecting whether the air spring corresponding to the normal axis can be normally inflated through another gas circuit as a whole, wherein the another gas circuit as a whole comprises the air pump and the gas pipeline between the normal axis and the air pump; If can be normally inflated, determining that the air pump has no fault.

4. The failure cause diagnosing method according to any one of claims 1 to 3, characterized by, The step of outputting the fault cause comprises: Displaying the fault cause on a vehicle terminal display screen; And / or, playing the fault cause through a vehicle terminal loudspeaker.

5. The failure cause diagnosing method according to Claim 4, characterized by, The step of outputting the fault cause further comprises: Detecting whether the distance between the terminal that has passed authentication and the vehicle is greater than a preset distance; If greater than the preset distance, sending the fault cause to the terminal that has passed authentication.

6. A failure cause diagnosing apparatus characterized by comprising: The fault cause diagnosis device comprises: The detection module is configured to, when there is an abnormal shaft with a falling anomaly, open a distribution valve corresponding to the abnormal shaft and a pressure relief valve; when the opening time reaches a preset time, detect whether the air pressure of an air spring corresponding to the abnormal shaft is greater than a preset air pressure; if yes, it is determined that the pressure relief valve corresponding to the abnormal shaft has a fault; if no, it is determined that the pressure relief valve corresponding to the abnormal shaft has no fault; if the pressure relief valve has no fault, it is detected whether the whole gas circuit has a fault, wherein the whole gas circuit includes a gas pump and a gas pipeline between the abnormal shaft and the gas pump; if the whole gas circuit has no fault, it is determined that the pressure maintaining valve corresponding to the abnormal shaft has a fault; if the whole gas circuit has a fault, it is detected whether the gas pump has a fault; if the gas pump has no fault, it is determined that the gas pipeline between the abnormal shaft and the gas pump has a fault. The output module is configured to output the fault cause based on the troubleshooting result.

7. A failure cause diagnosing apparatus characterized by comprising: The fault cause diagnosis device includes a processor, a memory, and a fault cause diagnosis program stored on the memory and executable by the processor, wherein the fault cause diagnosis program, when executed by the processor, implements the steps of the fault cause diagnosis method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium has a fault cause diagnosis program stored thereon, wherein the fault cause diagnosis program, when executed by the processor, implements the steps of the fault cause diagnosis method according to any one of claims 1 to 5.

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