Gas tank valve fault diagnosis method, device, equipment and readable storage medium

Abstract

The present invention provides a method, device, equipment and readable storage medium for diagnosing a gas tank valve fault. The method for diagnosing a gas tank valve fault includes: obtaining the height value of the height sensor and the pressure value of the pressure sensor in real time; when the gas tank valve switch signal and the distribution valve switch signal are both on, judging whether the gas tank valve is faulty according to the change of the height value and the pressure value; when the gas tank valve switch signal and the air pump valve switch signal are both on, judging whether the gas tank valve is faulty according to the change of the pressure value. The present invention monitors the working conditions involved in the gas tank valve from the application layer, and identifies the fault conditions that cannot be identified by the underlying circuit through the changes of the height value and the pressure value, so as to facilitate targeted countermeasures and remind the driver, thereby avoiding safety risks.

Description

Technical Field

[0001] The present invention relates to the technical field of air suspension fault diagnosis, and in particular to an air tank valve fault diagnosis method, device, equipment and a readable storage medium. Background Art

[0002] With the development of automobile technology, the configuration rate of air suspension on vehicles has gradually increased. The air suspension system is a suspension system with air springs as elastic elements. The elastic characteristics and height are adjusted by inflating or deflating the air springs. The air suspension system mainly includes air springs, air tanks, air pumps, connecting pipes and various switch valves. Among them, the air tank valve involves two working conditions. One is the working condition of inflating the air spring through the air tank, which requires opening the air tank valve and the distribution valve. The other is the working condition of inflating the air tank through the air pump, which requires opening the air tank valve and the air pump valve. The current air tank valve fault diagnosis method can identify conventional faults such as open circuit and short circuit of the air tank valve through the underlying circuit, but cannot identify faults caused by reasons such as blockage and non-response of the air tank valve. Summary of the invention

[0003] The main purpose of the present invention is to provide a gas tank valve fault diagnosis method, device, equipment and readable storage medium, aiming to solve the problem that the gas tank valve fault diagnosis method in the prior art cannot identify faults caused by gas tank valve blockage, non-response and other reasons.

[0004] In a first aspect, the present invention provides a method for diagnosing a gas tank valve fault, the method comprising:

[0005] Obtain the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time;

[0006] When the gas tank valve switch signal and the distribution valve switch signal are both on, judging whether the gas tank valve is faulty according to the changes of the height value and the pressure value;

[0007] When the gas tank valve switch signal and the air pump valve switch signal are both on, it is determined whether the gas tank valve is faulty based on the change in the pressure value.

[0008] Furthermore, in one embodiment, the step of judging whether the gas tank valve is faulty according to the changes in the height value and the pressure value comprises:

[0009] Get the height standard value under the current suspension height level;

[0010] If the absolute value of the difference between the altitude value obtained within the preset time and the altitude standard value is less than the first threshold, and the pressure value is less than the second threshold, it is determined that the gas tank valve is faulty.

[0011] Furthermore, in one embodiment, after the step of determining the gas tank valve failure, the method further includes:

[0012] Control the gas tank valve to close;

[0013] The air pump valve is controlled to open so as to charge the air spring via the air pump.

[0014] Furthermore, in one embodiment, the step of judging whether the gas tank valve is faulty according to the change of the pressure value comprises:

[0015] If the change rate of the pressure value within the preset time is continuously greater than the third threshold value, it is determined that the gas tank valve is faulty.

[0016] Furthermore, in one embodiment, after the step of determining the gas tank valve failure, the method further includes:

[0017] Control the gas tank valve and air pump valve to close.

[0018] Furthermore, in one embodiment, the gas tank valve fault diagnosis method further includes:

[0019] After confirming that the gas tank valve is faulty, control the gas tank valve to close and record the gas tank valve fault information;

[0020] When an air spring charging request is received and the air tank valve failure information is detected, the air tank valve is kept closed and the air pump valve is controlled to open so as to charge the air spring through the air pump.

[0021] Furthermore, in one embodiment, the gas tank valve fault diagnosis method further includes:

[0022] When it is determined that the gas tank valve is faulty, the gas tank valve is controlled to be closed and the fault information of the gas tank valve is recorded;

[0023] When a request to charge the air tank is received and the air tank valve failure information is detected, the air tank valve and the air pump valve are kept closed.

[0024] In a second aspect, the present invention further provides a gas tank valve fault diagnosis device, the gas tank valve fault diagnosis device comprising:

[0025] An acquisition module is used to obtain the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time;

[0026] A first diagnostic module is used to determine whether the gas tank valve is faulty according to changes in the height value and the pressure value when the gas tank valve switch signal and the distribution valve switch signal are both turned on;

[0027] The second diagnostic module is used to determine whether the gas tank valve is faulty according to the change of the pressure value when the gas tank valve switch signal and the air pump valve switch signal are both turned on.

[0028] In a third aspect, the present invention also provides an air tank valve fault diagnosis device, which includes a processor, a memory, and an air tank valve fault diagnosis program stored in the memory and executable by the processor, wherein when the air tank valve fault diagnosis program is executed by the processor, the steps of the above-mentioned air tank valve fault diagnosis method are implemented.

[0029] In a fourth aspect, the present invention further provides a readable storage medium, on which is stored a gas tank valve fault diagnosis program, wherein when the gas tank valve fault diagnosis program is executed by a processor, the steps of the above-mentioned gas tank valve fault diagnosis method are implemented.

[0030] In the present invention, the height value of the height sensor and the pressure value of the pressure sensor are obtained in real time; when the gas tank valve switch signal and the distribution valve switch signal are both turned on, it is determined whether the gas tank valve is faulty according to the changes in the height value and the pressure value; when the gas tank valve switch signal and the air pump valve switch signal are both turned on, it is determined whether the gas tank valve is faulty according to the changes in the pressure value. The present invention monitors the working conditions involved in the gas tank valve from the application layer, and identifies fault conditions that cannot be identified by the underlying circuit through the changes in the height value and the pressure value, so as to facilitate targeted countermeasures and remind the driver, thereby avoiding safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a flow chart of a method for diagnosing a gas tank valve fault in one embodiment of the present invention;

[0032] Figure 2 The figure is a piping diagram of the air suspension system;

[0033] Figure 3 A logic diagram of a method for diagnosing a gas tank valve fault in one embodiment of the present invention;

[0034] Figure 4 A schematic flow chart of a method for diagnosing a gas tank valve fault in another embodiment of the present invention;

[0035] Figure 5 Schematic diagram of the hardware structure of a gas tank valve fault diagnosis device in one embodiment of the present invention.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0038] In a first aspect, an embodiment of the present invention provides a method for diagnosing a gas tank valve fault.

[0039] Figure 1 A schematic flow chart of a method for diagnosing a gas tank valve fault in one embodiment of the present invention is shown.

[0040] Reference Figure 1 In one embodiment, the gas tank valve fault diagnosis method comprises the following steps:

[0041] S11, obtaining the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time;

[0042] Figure 2 A schematic diagram of the piping of the air suspension system is shown; Figure 3 A logical schematic diagram of a method for diagnosing a gas tank valve fault in an embodiment of the present invention is shown.

[0043] In this embodiment, the height sensor and the pressure sensor are both sensors built into the air suspension system. Figure 2 and Figure 3 , the height sensors are the left front height sensor, right front height sensor, left rear height sensor and right rear height sensor. The left front height sensor is used to monitor the height change of the left front air spring, the right front height sensor is used to monitor the height change of the right front air spring, the left rear height sensor is used to monitor the height change of the left rear air spring, and the right rear height sensor is used to monitor the height change of the right rear air spring. The pressure sensor is set on the main pipe of the air suspension pipeline to monitor the pressure of the main pipe under various working conditions of the air suspension system.

[0044] In the air suspension system, the suspension controller is connected to the height sensor and the pressure sensor to monitor the height value and the pressure value, and judges whether the suspension height adjustment is in place according to the height value, and judges whether there are problems such as open circuit and short circuit in the pipeline according to the pressure value. The height value and the pressure value in this embodiment can be obtained indirectly through the suspension controller, or directly through the height sensor and the pressure sensor. The gas tank valve fault diagnosis method in this embodiment does not require additional sensors, is easy to implement, and saves costs.

[0045] S12, when the gas tank valve switch signal and the distribution valve switch signal are both on, judging whether the gas tank valve is faulty according to the changes in the height value and the pressure value;

[0046] In this embodiment, step S12 is for the working condition of the air storage tank charging the air spring, and further reference is made to Figure 2 and Figure 3, when the suspension controller receives the air spring inflation request, it controls the air tank valve and the distribution valve to open. At the same time, the switch signals of the air tank valve and the distribution valve in the suspension controller become open. It should be noted that the valve switch signal does not always represent the actual switch state of the valve. For example, for faults caused by valve blockage, non-response, etc., even if the valve switch signal is open, the actual state of the valve may be closed. When the switch signals of the air tank valve and the distribution valve are both on, it means that the air suspension system is in the condition where the air tank inflates the air spring and enters the monitoring state. In particular, if any of the switch signals of the air tank valve and the distribution valve is switched to off, the monitoring state is exited.

[0047] If the gas tank valve and the distribution valve are opened normally, the gas path between the gas tank, the main line and the air spring is connected, the gas tank inflates the air spring to make it stretch, the height value of the height sensor increases with the stretch of the air spring, and the pressure value of the pressure sensor changes within a certain range with the stretch of the air spring. For example, the pressure value changes within the range of 8bar-11bar. If the gas tank valve is opened normally and the distribution valve fails to open, the gas path between the gas tank and the main line is connected, the gas path between the main line and the air spring is blocked, and the air spring is not inflated, the height value of the height sensor remains basically unchanged (there may be a slight change due to vehicle bumps), and the pressure value of the pressure sensor is the pressure value of the gas tank, which is relatively high. For example, the pressure value is greater than 13.5bar (the gas tank valve needs to maintain a pressure above 13.5bar to ensure that the air spring can be normally inflated). If the air tank valve malfunctions and does not open, and the distribution valve opens normally, the air path between the air tank and the main line is blocked, and the air path between the main line and the air spring is connected, the air spring is not inflated, the height value of the height sensor remains basically unchanged, and the pressure value of the pressure sensor is the pressure value of the air tank, which is relatively low. For example, the pressure value is a value in the range of 8bar-11bar.

[0048] It can be seen that the height value and pressure value have different changes according to the actual switch state of the gas tank valve and the distribution valve. Therefore, in the monitoring state, it is possible to judge whether the gas tank valve is faulty according to the changes in the height value and pressure value.

[0049] Further, in one embodiment, the step of determining whether the gas tank valve is faulty according to the changes in the height value and the pressure value includes:

[0050] Get the height standard value under the current suspension height level;

[0051] If the absolute value of the difference between the altitude value obtained within the preset time and the altitude standard value is less than the first threshold, and the pressure value is less than the second threshold, it is determined that the gas tank valve is faulty.

[0052] In this embodiment, the specific judgment condition that the height value is substantially unchanged is that the absolute value of the difference between the height value obtained within the preset time and the height standard value is less than the first threshold value, and the first threshold value is set according to the actual situation and is greater than the maximum change in the height value when the vehicle is bumpy. The specific judgment condition for a low pressure value is that the pressure value obtained within the preset time is less than the second threshold value, and the second threshold value is less than the lower pressure limit of the gas tank and greater than the upper pressure limit of the air spring. For example, when the lower pressure limit of the gas tank is 13.5 bar and the upper pressure limit of the air spring is 11 bar, the second threshold value can be set to 12 bar.

[0053] Furthermore, in one embodiment, after the step of determining that the gas tank valve is faulty, the method further includes:

[0054] Control the gas tank valve to close;

[0055] The air pump valve is controlled to open so as to charge the air spring via the air pump.

[0056] In this embodiment, due to the failure of the gas tank valve, when the switch signal of the gas tank valve is on, the actual switch state of the gas tank is uncertain (sometimes it cannot be opened normally, and sometimes it can be opened). In order to ensure the reliability of the suspension controller monitoring, the gas tank valve is controlled to be closed so that the switch signal of the gas tank valve is consistent with the actual switch state of the gas tank valve, both of which are closed. In addition, the air pump valve is controlled to be open. Since the distribution valve is still in the open state, the air path between the air pump, the main line, and the air spring is connected, and the air pump inflates the air spring, thereby satisfying the current air spring inflation request. It can be understood that when the height value reaches the target suspension height level, the air pump valve and the distribution valve should be controlled to be closed.

[0057] S13. When the gas tank valve switch signal and the air pump valve switch signal are both on, determine whether the gas tank valve is faulty based on changes in the pressure value.

[0058] In this embodiment, step S13 is for the working condition of the air pump charging the air storage tank, and further reference is made to Figure 2 and Figure 3 When the suspension controller receives the request to charge the air tank, it controls the air tank valve and the air pump valve to open. At the same time, the switch signals of the air tank valve and the air pump valve in the suspension controller are turned on. When the switch signals of the air tank valve and the air pump valve are both on, it means that the air suspension system is in the condition where the air pump charges the air tank and enters the monitoring state. In particular, if any of the switch signals of the air tank valve and the air pump valve is switched to off, the monitoring state is exited.

[0059] If the gas tank valve and the air pump valve are opened normally, the gas path between the gas tank, the main line and the air pump is connected, the air pump inflates the gas tank, and the pressure value of the pressure sensor rises slowly. For example, after the gas tank valve and the air pump valve are opened, it takes at least 45 seconds for the pressure value to reach the specified pressure value of the gas tank, 18 bar. If the gas tank valve is opened normally and the air pump valve fails to open, the gas path between the gas tank and the main line is connected, the gas path between the main line and the air pump is blocked, and the gas tank is not inflated, the pressure value of the pressure sensor is the pressure value of the gas tank, and it remains constant. For example, the pressure value is less than 13.5 bar (when the pressure value of the gas tank valve is less than 13.5 bar, an air pump is required to inflate it). If the gas tank valve fails to open and the air pump valve opens normally, the gas path between the gas tank and the main pipeline is blocked, and the gas path between the main pipeline and the air pump is connected, which is equivalent to the air pump inflating the main pipeline. Since the volume of the pipeline is very small, the pressure value of the pressure sensor will rise very quickly. For example, the pressure value exceeds 20bar within 8s. It can be seen that the pressure value changes differently depending on the actual switch state of the gas tank valve and the air pump valve. Therefore, in the monitoring state, it is possible to determine whether the gas tank valve is faulty based on the change in the pressure value.

[0060] Further, in one embodiment, the step of determining whether the gas tank valve is faulty according to the change in the pressure value includes:

[0061] If the change rate of the pressure value within the preset time is continuously greater than the third threshold value, it is determined that the gas tank valve is faulty.

[0062] In this embodiment, the specific judgment condition for the pressure value to rise quickly is that the change rate of the pressure value within the preset time is continuously greater than the third threshold value. The third threshold value is set according to actual conditions and is greater than the change rate of the pressure value when the air pump normally inflates the air tank.

[0063] Furthermore, in one embodiment, after the step of determining that the gas tank valve is faulty, the method further includes:

[0064] Control the gas tank valve and air pump valve to close.

[0065] In this embodiment, due to the failure of the gas tank valve, when the switch signal of the gas tank valve is open, the actual switch state of the gas tank is uncertain (sometimes it cannot be opened normally, and sometimes it can be opened). In order to ensure the reliability of the monitoring of the suspension controller, the gas tank valve is controlled to be closed so that the switch signal of the gas tank valve is consistent with the actual switch state of the gas tank valve, both of which are closed. In addition, in order to avoid damage due to excessive pipeline pressure, the air pump valve is controlled to be closed. In the case of a gas tank valve failure, the gas filling request of the gas tank valve cannot be met.

[0066] Therefore, in this embodiment, the height value of the height sensor and the pressure value of the pressure sensor are obtained in real time; when the gas tank valve switch signal and the distribution valve switch signal are both on, it is determined whether the gas tank valve is faulty according to the changes in the height value and the pressure value; when the gas tank valve switch signal and the air pump valve switch signal are both on, it is determined whether the gas tank valve is faulty according to the changes in the pressure value. This embodiment monitors the working conditions involved in the gas tank valve from the application layer, and identifies fault conditions that cannot be identified by the underlying circuit through changes in the height value and the pressure value, so as to facilitate targeted response measures and remind the driver, thereby avoiding safety risks.

[0067] Figure 4 A schematic flow chart of a method for diagnosing a gas tank valve fault in another embodiment of the present invention is shown;

[0068] Reference Figure 4 In one embodiment, the gas tank valve fault diagnosis method comprises the following steps:

[0069] S21, obtaining the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time;

[0070] S22, when the gas tank valve switch signal and the distribution valve switch signal are both on, judging whether the gas tank valve is faulty according to the changes in the height value and the pressure value;

[0071] S23, when the gas tank valve switch signal and the air pump valve switch signal are both on, judging whether the gas tank valve is faulty according to the change of the pressure value;

[0072] In this embodiment, steps S21 to S23 refer to the analysis of steps S11 to S13 in the above-mentioned embodiment, and are not described in detail here.

[0073] S24, after determining that the gas tank valve is faulty, controlling the gas tank valve to close, and recording the gas tank valve fault information;

[0074] In this embodiment, in either of the two working conditions of the air tank inflating the air spring or the air pump inflating the air tank, after determining that the air tank valve is faulty, the air tank valve is controlled to close, so that the switch signal of the air tank valve is consistent with the actual switch state of the air tank valve, both of which are closed, thereby ensuring the reliability of the suspension controller monitoring. In addition, the air tank valve fault information is recorded to avoid repeated judgments and occupying system resources and time, so that corresponding countermeasures can be taken in time for the requests corresponding to the two working conditions in the subsequent process, so as to ensure the normal operation of the air suspension system. It can be understood that when the air suspension system is repaired, the air tank valve fault information needs to be cleared.

[0075] S25, when an air spring charging request is received and the air tank valve failure information is detected, the air tank valve is kept closed and the air pump valve is controlled to be opened so as to charge the air spring through the air pump;

[0076] In this embodiment, in response to the air spring inflation request, when no air tank valve fault information is detected, the suspension controller controls the air tank valve and the distribution valve to open, and the switch signals of the air tank valve and the distribution valve in the suspension controller become open, and enter the monitoring state to monitor whether the air tank valve is faulty. For related analysis, refer to the aforementioned step S12. When the air tank valve fault information is detected, the strategy of using the air pump to inflate the air spring is adopted, the air tank valve is kept closed, and the air pump valve is controlled to open. When the height value reaches the target suspension height level, the air pump valve and the distribution valve are controlled to close.

[0077] S26: When a request to charge the gas tank is received and gas tank valve failure information is detected, the gas tank valve and the air pump valve are kept closed.

[0078] In this embodiment, in response to the air tank charging request, when no air tank valve fault information is detected, the suspension controller controls the air tank valve and the air pump valve to open, and the switch signals of the air tank valve and the air pump valve in the suspension controller become open, and enter the monitoring state to monitor whether the air tank valve is faulty. For related analysis, refer to the aforementioned step S13. When the air tank valve fault information is detected, in order to avoid damage due to excessive pipeline pressure, the air tank valve and the air pump valve are kept closed.

[0079] In a second aspect, an embodiment of the present invention further provides a gas tank valve fault diagnosis device.

[0080] In one embodiment, the gas tank valve fault diagnosis device includes:

[0081] An acquisition module is used to obtain the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time;

[0082] The first diagnostic module is used to determine whether the gas tank valve is faulty according to the changes in the height value and the pressure value when the gas tank valve switch signal and the distribution valve switch signal are both turned on;

[0083] The second diagnostic module is used to determine whether the gas tank valve is faulty according to the change of the pressure value when the gas tank valve switch signal and the air pump valve switch signal are both turned on.

[0084] Furthermore, in one embodiment, the first diagnostic module is used to:

[0085] Get the height standard value under the current suspension height level;

[0086] If the absolute value of the difference between the altitude value obtained within the preset time and the altitude standard value is less than the first threshold, and the pressure value is less than the second threshold, it is determined that the gas tank valve is faulty.

[0087] Furthermore, in one embodiment, the first diagnostic module is used to:

[0088] If the absolute value of the difference between the altitude value obtained within the preset time and the altitude standard value is less than the first threshold, and the pressure value is less than the second threshold, it is determined that the air tank valve is faulty, the air tank valve is controlled to be closed, and the air pump valve is controlled to be opened so that the air spring is inflated by the air pump.

[0089] Furthermore, in one embodiment, the second diagnostic module is used to:

[0090] If the change rate of the pressure value within the preset time is continuously greater than the third threshold value, it is determined that the gas tank valve is faulty.

[0091] Furthermore, in one embodiment, the second diagnostic module is used to:

[0092] If the change rate of the pressure value within the preset time is continuously greater than the third threshold value, it is determined that the gas tank valve is faulty, and the gas tank valve and the air pump valve are controlled to be closed.

[0093] Furthermore, in one embodiment, the gas tank valve fault diagnosis device further includes:

[0094] A recording module, used to control the gas tank valve to close and record the gas tank valve failure information after determining that the gas tank valve fails;

[0095] The first execution module is used to keep the air tank valve closed and control the air pump valve to open when receiving an air spring inflation request and detecting air tank valve failure information, so as to inflate the air spring through the air pump.

[0096] Furthermore, in one embodiment, the gas tank valve fault diagnosis device further includes:

[0097] A recording module, used to control the gas tank valve to close and record the gas tank valve failure information after determining that the gas tank valve fails;

[0098] The second execution module is used to keep the gas tank valve and the air pump valve closed when receiving a gas tank filling request and detecting gas tank valve failure information.

[0099] Among them, the functional implementation of each module in the above-mentioned gas tank valve fault diagnosis device corresponds to the various steps in the above-mentioned gas tank valve fault diagnosis method embodiment, and its functions and implementation processes are no longer repeated here one by one.

[0100] In a third aspect, an embodiment of the present invention provides a gas tank valve fault diagnosis device, which can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0101] Figure 5A schematic diagram of the hardware structure of a gas tank valve fault diagnosis device in one embodiment of the present invention is shown.

[0102] Reference Figure 5 In an embodiment of the present invention, a gas tank valve fault diagnosis device may include a processor 1001 (e.g., a central processing unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components; the user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a wireless interface (such as a wireless fidelity WIreless-FIdelity, WI-FI interface); the memory 1005 may be a high-speed random access memory (random access memory, RAM), or a stable memory (non-volatile memory), such as a disk storage, and the memory 1005 may optionally be a storage device independent of the aforementioned processor 1001. Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation of the present invention, and may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0103] Continue to refer to Figure 5 , Figure 5 The memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a gas tank valve fault diagnosis program. The processor 1001 may call the gas tank valve fault diagnosis program stored in the memory 1005 and execute the gas tank valve fault diagnosis method provided in the embodiment of the present invention.

[0104] In a fourth aspect, an embodiment of the present invention further provides a readable storage medium.

[0105] The readable storage medium of the present invention stores a gas tank valve fault diagnosis program, wherein when the gas tank valve fault diagnosis program is executed by a processor, the steps of the gas tank valve fault diagnosis method as described above are implemented.

[0106] Among them, the method implemented when the gas tank valve fault diagnosis program is executed can refer to the various embodiments of the gas tank valve fault diagnosis method of the present invention, and will not be repeated here.

[0107] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0108] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present invention.

[0110] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for diagnosing a gas tank valve fault, characterized in that: The gas tank valve fault diagnosis method comprises: Obtain the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time; When the air tank valve switch signal and the distribution valve switch signal are both on, the height standard value under the current suspension height level is obtained. If the absolute value of the difference between the height value obtained within the preset time and the height standard value is less than the first threshold value, and the pressure value is less than the second threshold value, it is determined that the air tank valve is faulty, the air tank valve is controlled to be closed, and the air pump valve is controlled to be opened, so as to inflate the air spring through the air pump; When the gas tank valve switch signal and the air pump valve switch signal are both on, it is determined whether the gas tank valve is faulty based on the change in the pressure value.

2. The gas tank valve fault diagnosis method according to claim 1, characterized in that: The step of judging whether the gas tank valve is faulty according to the change of the pressure value comprises: If the change rate of the pressure value within the preset time is continuously greater than the third threshold value, it is determined that the gas tank valve is faulty.

3. The gas tank valve fault diagnosis method according to claim 2, characterized in that: After the step of determining that the gas tank valve is faulty if the rate of change of the pressure value within the preset time is continuously greater than the third threshold, the following step further comprises: Control the gas tank valve and air pump valve to close.

4. The gas tank valve fault diagnosis method as claimed in any one of claims 1 to 3, characterized in that: The gas tank valve fault diagnosis method further includes: After confirming that the gas tank valve is faulty, control the gas tank valve to close and record the gas tank valve fault information; When an air spring charging request is received and the air tank valve failure information is detected, the air tank valve is kept closed and the air pump valve is controlled to open so as to charge the air spring through the air pump.

5. The gas tank valve fault diagnosis method according to any one of claims 1 to 3, characterized in that: The gas tank valve fault diagnosis method further includes: When it is determined that the gas tank valve is faulty, the gas tank valve is controlled to be closed and the fault information of the gas tank valve is recorded; When a request to charge the air tank is received and the air tank valve failure information is detected, the air tank valve and the air pump valve are kept closed.

6. A gas tank valve fault diagnosis device, characterized in that: The gas tank valve fault diagnosis device comprises: An acquisition module is used to obtain the altitude value of the altitude sensor and the pressure value of the pressure sensor in real time; The first diagnostic module is used for obtaining the height standard value under the current suspension height level when the gas tank valve switch signal and the distribution valve switch signal are both turned on. If the absolute value of the difference between the height value obtained within a preset time and the height standard value is less than the first threshold value, and the pressure value is less than the second threshold value, it is determined that the gas tank valve is faulty, the gas tank valve is controlled to be closed, and the air pump valve is controlled to be opened, so as to inflate the air spring through the air pump; The second diagnostic module is used to determine whether the gas tank valve is faulty according to the change of the pressure value when the gas tank valve switch signal and the air pump valve switch signal are both turned on.

7. A gas tank valve fault diagnosis device, characterized in that: The gas tank valve fault diagnosis device includes a processor, a memory, and a gas tank valve fault diagnosis program stored in the memory and executable by the processor, wherein when the gas tank valve fault diagnosis program is executed by the processor, the steps of the gas tank valve fault diagnosis method as described in any one of claims 1 to 5 are implemented.

8. A readable storage medium, characterized in that: The readable storage medium stores a gas tank valve fault diagnosis program, wherein when the gas tank valve fault diagnosis program is executed by a processor, the steps of the gas tank valve fault diagnosis method according to any one of claims 1 to 5 are implemented.

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