Empty spring overpressure diagnosis method, device, equipment and computer-readable storage medium

Abstract

A method, device, equipment and computer-readable storage medium for diagnosing overpressure of an air spring relate to the field of vehicle diagnostic technology, including: during the inflation process of a target air spring, when it is detected that the first pressure value collected by the pressure sensor in the air spring system is greater than a preset overpressure threshold, controlling the inflation action of the target air spring to stop; controlling the pressure relief valve to be in an open state, closing the pressure relief valve after it has been open for a preset period of time, and controlling the target air spring distribution valve to be in an open state to obtain a second pressure value; if it is detected that the second pressure value is not less than a preset first pressure threshold, determining that the target air spring is in an overpressure state, wherein the first pressure threshold is less than the overpressure threshold. It can be seen that the present application can effectively eliminate the influence of abnormal working conditions of the air spring distribution valve and the air spring pressure-maintaining valve on the diagnosis of air spring overpressure, so as to achieve accurate diagnosis of air spring overpressure.

Description

Technical Field

[0001] The present application relates to the field of vehicle diagnosis technology, and in particular to a method, device, equipment and computer-readable storage medium for diagnosing overpressure of an air spring. Background Art

[0002] In order to ensure the normal operation of the air spring system, it is usually necessary to control the pressure of the air spring system within the normal pressure range; among them, if the air spring pressure is too high (that is, the air spring has an overpressure problem), it may explode, endangering personal safety. Therefore, overpressure diagnosis is very necessary.

[0003] In the prior art, when diagnosing an air spring overpressure, once the pressure detected by the pressure sensor reaches a specified threshold during the air spring lifting process, an air spring overpressure fault alarm is directly triggered. Because this solution simply detects the pressure and issues a fault signal, without considering the impact of abnormal operation of the air spring distribution valve, air spring pressure-maintaining valve, etc. on the air spring pressure, it may lead to misdiagnosis. Therefore, accurately diagnosing air spring overpressure is an urgent problem that needs to be solved. Summary of the Invention

[0004] The present application provides a method, device, equipment and computer-readable storage medium for diagnosing overpressure of an empty spring, which can solve the technical problem of the inability to accurately diagnose overpressure of an empty spring in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a method for diagnosing overpressure of an empty spring, the method comprising:

[0006] During the inflation process of the target empty spring, when it is detected that the first pressure value collected by the pressure sensor in the empty spring system is greater than a preset overpressure threshold, the inflation action of the target empty spring is stopped;

[0007] Controlling the pressure relief valve to be in an open state, closing the pressure relief valve after the preset opening time, and controlling the target air spring distribution valve to be in an open state to obtain a second pressure value;

[0008] If it is detected that the second pressure value is not less than a preset first pressure threshold, it is determined that the target empty spring is in an overpressure state, wherein the first pressure threshold is less than the overpressure threshold.

[0009] In combination with the first aspect, in one embodiment, after the step of controlling the target empty spring distributing valve to be in an open state to obtain a second pressure value, the method further includes:

[0010] If it is detected that the second pressure value is less than the first pressure threshold, the air pump and the target empty spring distribution valve are controlled to be in an open state to inflate the target empty spring;

[0011] Obtain a third pressure value within a preset inflation time to determine a fault diagnosis result of the target air spring distribution valve and the target air spring pressure maintaining valve pipeline based on the size relationship between the third pressure value and a preset second pressure threshold, wherein the second pressure threshold is greater than the overpressure threshold.

[0012] In combination with the first aspect, in one embodiment, determining the fault diagnosis results of the target air spring distribution valve and the target air spring pressure maintaining valve pipeline based on the magnitude relationship between the third pressure value and the preset second pressure threshold includes:

[0013] If the third pressure value is greater than the second pressure threshold, it is determined that the target air spring distributing valve has a fault;

[0014] If the third pressure value is not greater than the second pressure threshold, it is determined that a fault exists in the target air spring pressure-maintaining valve pipeline and the target air spring is in an overpressure state.

[0015] In combination with the first aspect, in one embodiment, after the step of determining that the target empty spring is in an overpressure state, the method further includes:

[0016] controlling the pressure relief valve and the target empty spring distribution valve to be in an open state to exhaust the target empty spring;

[0017] When the pressure in the target empty spring drops to a preset overpressure recovery threshold, the exhaust operation is controlled to be in a stopped state, so that the target empty spring is in a non-overpressure state.

[0018] In combination with the first aspect, in one embodiment, the method further includes:

[0019] When it is detected that the first pressure value collected by the pressure sensor in the air spring system is not greater than the preset overpressure threshold, the target air spring is controlled to continue to be in an inflated state to achieve a lifting operation of the target air spring.

[0020] In a second aspect, an embodiment of the present application provides an empty spring overpressure diagnostic device, the empty spring overpressure diagnostic device comprising:

[0021] a detection control module configured to, during the inflation process of the target air spring, control the stopping of the inflation of the target air spring when it is detected that the first pressure value collected by the pressure sensor in the air spring system is greater than a preset overpressure threshold; control the pressure relief valve to be in an open state, close the pressure relief valve after it has been open for a preset period of time, and control the target air spring distribution valve to be in an open state to obtain a second pressure value;

[0022] An overpressure diagnostic module is configured to determine that the target empty spring is in an overpressure state if it is detected that the second pressure value is less than a preset first pressure threshold, wherein the first pressure threshold is less than the overpressure threshold.

[0023] In conjunction with the second aspect, in one embodiment, the detection control module is further configured to control the air pump and the target empty spring distribution valve to be in an open state to inflate the target empty spring if it is detected that the second pressure value is not less than the first pressure threshold;

[0024] The overpressure diagnostic module is also used to obtain a third pressure value within a preset inflation time to determine the fault diagnosis results of the target air spring distribution valve and the target air spring pressure maintaining valve pipeline based on the size relationship between the third pressure value and a preset second pressure threshold, and the second pressure threshold is greater than the overpressure threshold.

[0025] In conjunction with the second aspect, in one embodiment, the overvoltage diagnosis module is specifically configured to:

[0026] If the third pressure value is greater than the second pressure threshold, it is determined that the target air spring distributing valve has a fault;

[0027] If the third pressure value is not greater than the second pressure threshold, it is determined that a fault exists in the target air spring pressure-maintaining valve pipeline and the target air spring is in an overpressure state.

[0028] In conjunction with the second aspect, in one embodiment, the empty spring overvoltage diagnostic device further includes an overvoltage recovery module, which is configured to:

[0029] controlling the pressure relief valve and the target empty spring distribution valve to be in an open state to exhaust the target empty spring;

[0030] When the pressure in the target empty spring drops to a preset overpressure recovery threshold, the exhaust operation is controlled to be in a stopped state, so that the target empty spring is in a non-overpressure state.

[0031] In combination with the second aspect, in one embodiment, the detection control module is also used to: when it is detected that the first pressure value collected by the pressure sensor in the air spring system is not greater than a preset overpressure threshold, control the target air spring to continue to be in an inflated state to achieve the lifting operation of the target air spring.

[0032] In the third aspect, an embodiment of the present application provides an air spring overpressure diagnostic device, which includes a processor, a memory, and an air spring overpressure diagnostic program stored in the memory and executable by the processor, wherein when the air spring overpressure diagnostic program is executed by the processor, the steps of the aforementioned air spring overpressure diagnostic method are implemented.

[0033] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which an empty spring overpressure diagnostic program is stored, wherein when the empty spring overpressure diagnostic program is executed by a processor, the steps of the aforementioned empty spring overpressure diagnostic method are implemented.

[0034] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0035] During the inflation process of the target air spring, when it is detected that the first pressure value collected by the pressure sensor in the air spring system is greater than the overpressure threshold, the target air spring will not be directly diagnosed as being in an overpressure state, because the first pressure value is not necessarily the pressure value of the target air spring; at this time, it will be further judged whether the target air spring distribution valve or the target air spring pressure maintaining valve pipeline is installed normally, so as to eliminate the influence of abnormal working of the air spring distribution valve, air spring pressure maintaining valve, etc. on the air spring pressure, that is, control the stopping of the inflation action of the target air spring and open the pressure relief valve to unload the high-pressure gas in the pipeline, and wait for the pressure relief valve to open for a preset opening time. Then close it again; then control the target air spring distribution valve to be in an open state so that the pressure in the pipeline comes from the target air spring, and the second pressure value obtained at this time is the pressure value of the target air spring; so when it is detected that the second pressure value is not less than the first pressure threshold (the first pressure threshold is less than the overpressure threshold), it means that the target air spring distribution valve and the target air spring pressure maintaining valve pipeline installation are normal, that is, the first pressure value collected by the pressure sensor is indeed the pressure value of the target air spring, and because the first pressure value is greater than the overpressure threshold, it can be accurately determined that the target air spring is in an overpressure state. It can be seen that through this application, the influence of abnormal working conditions of the air spring distribution valve and the air spring pressure maintaining valve on the air spring overpressure diagnosis can be effectively eliminated, so as to achieve accurate diagnosis of air spring overpressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a flow chart of an embodiment of the method for diagnosing overpressure of an empty spring of the present application;

[0037] Figure 2 This is a functional module diagram of an embodiment of the air spring overpressure diagnostic device of the present application;

[0038] Figure 3 This is a schematic diagram of the hardware structure of the air spring overpressure diagnostic device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0041] In a first aspect, an embodiment of the present application provides a method for diagnosing overpressure of an empty spring.

[0042] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of an embodiment of the method for diagnosing over-pressure of an empty spring in this application. Figure 1 As shown, the empty spring overpressure diagnosis method includes:

[0043] Step S10: During the inflation process of the target empty spring, when it is detected that the first pressure value collected by the pressure sensor in the empty spring system is greater than a preset overpressure threshold, the inflation action of the target empty spring is stopped.

[0044] For example, it should be understood that the target empty spring refers to the empty spring that needs to be diagnosed for overpressure (i.e., the object to be diagnosed); the overpressure threshold refers to the pressure value used to determine whether the empty spring is overpressure. The specific value setting can be determined according to the actual needs of different models or through experimental calibration, and is not limited here. For example, the underpressure threshold is set to 13 bar; in addition, it should be noted that the pressure sensor in the air spring system is a shared component, so whether it is air spring pressure detection or air tank pressure detection, it is achieved through the pressure sensor after opening the corresponding distribution valve.

[0045] It can be understood that target spring inflation refers to controlling the high-pressure gas in the air tank or the high-pressure gas compressed by the air pump and then transmitted through the air tank distribution valve to the target spring distribution valve. The target spring distribution valve then transmits the high-pressure gas to the target spring pressure-holding valve, thereby inflating the target spring and achieving vehicle body lift. Because overpressure problems are prone to occur during the target spring inflation process, which may cause explosion and endanger personal safety, overpressure diagnosis during the target spring inflation process is very critical.

[0046] In this embodiment, the air spring system can be initialized first and a determination can be made as to whether the air spring system has any faults. If there is a fault, the ASC (Air Suspension Controller) controller will issue a system fault alarm. If there is no fault, the pressure sensor will be used to collect pressure during the inflation of the target air spring to obtain a first pressure value. If the first pressure value is greater than the overpressure threshold, it means that the target air spring may have an overpressure problem. However, since abnormal working of the air spring distribution valve, the air spring pressure maintaining valve, etc. will affect the air spring pressure, the first pressure value is not necessarily the true pressure value of the target air spring. Therefore, this embodiment will further determine whether the target air spring distribution valve or the target air spring pressure maintaining valve pipeline is installed normally to eliminate the influence of abnormal working of the air spring distribution valve, the air spring pressure maintaining valve, etc. on the air spring pressure. Among them, the inflation action of the target air spring is first controlled to stop, that is, the inflation of the target air spring is stopped to avoid further increase in pressure, thereby preventing the air spring from exploding.

[0047] Furthermore, in one embodiment, the method also includes: when it is detected that the first pressure value collected by the pressure sensor in the air spring system is not greater than a preset overpressure threshold, controlling the target air spring to continue to be in an inflated state to achieve a lifting operation of the target air spring.

[0048] For example, in this embodiment, if the pressure value collected by the pressure sensor is not detected to be greater than the overpressure threshold during the inflation process of the target empty spring, it means that there is no overpressure problem in the target empty spring at this time, so the target empty spring will be controlled to continue to be inflated, that is, the inflation and lifting action of the target empty spring will continue to be completed to ensure that the target empty spring can be lifted normally.

[0049] Step S20: Control the pressure relief valve to be in an open state, close the pressure relief valve after being open for a preset time, and control the target air spring distribution valve to be in an open state to obtain a second pressure value.

[0050] For example, it should be noted that the specific value of the preset opening time can be determined according to the actual needs of different vehicle models or through experimental calibration. It is not limited here. As long as the pressure relief valve is opened for the preset opening time, the pressure in the pipeline can be completely or substantially relieved. For example, the preset opening time is set to 3s.

[0051] In this embodiment, to eliminate the impact of abnormal operation of the air spring distribution valve, air spring pressure-maintaining valve, etc. on the air spring pressure, the pressure relief valve is controlled to be in an open state and maintained open for a preset opening time of 3 seconds to release the high-pressure gas in the pipeline, and then the pressure relief valve is closed. The target air spring distribution valve is then controlled to be in an open state, and the pressure sensor continues to collect pressure to obtain a second pressure value. It should be understood that if the target air spring distribution valve and the target air spring pressure-maintaining valve pipeline installation are both faulty at this time (i.e., the target air spring distribution valve can open normally and the target air spring pressure-maintaining valve pipeline installation is normal), then under normal circumstances, the pressure in the target air spring will be transmitted to the pipeline, that is, the pressure in the pipeline is derived from the target air spring. In other words, the pipeline pressure collected by the pressure sensor should be relatively large. Therefore, this embodiment can diagnose whether the target air spring distribution valve and the target air spring pressure-maintaining valve pipeline are normal and whether the target air spring is indeed overpressurized by the magnitude of the obtained second pressure value.

[0052] Step S30: If it is detected that the second pressure value is not less than a preset first pressure threshold, it is determined that the target empty spring is in an overpressure state, wherein the first pressure threshold is less than the overpressure threshold.

[0053] For example, it should be noted that the first pressure threshold refers to the threshold used to determine whether the target air spring distribution valve and the target air spring pressure maintaining valve pipeline are installed normally. The specific value setting can be determined according to the actual needs of different vehicle models or through experimental calibration. It is not limited here, as long as the first pressure threshold is less than the overpressure threshold. Of course, in order to further improve the accuracy of diagnosis, it is preferred to control the difference between the first pressure threshold and the overpressure threshold to be as large as possible, such as setting the first pressure threshold to 3 bar.

[0054] In this embodiment, if the second pressure value is not less than the first pressure threshold, it indicates that the target air spring distribution valve and the target air spring pressure-maintaining valve pipelines are properly installed, allowing the pressure in the target air spring to be normally transmitted to the pipeline. This further proves that the first and second pressure values ​​are the actual pressure values ​​of the target air spring at different stages. Since the first pressure value is greater than the overpressure threshold, it indicates that the target air spring is indeed overpressured. Therefore, it can be directly determined that the target air spring is in an overpressure state, and the ASC controller will alarm the target air spring that it is in an overpressure state. It can be seen that this embodiment can effectively eliminate the influence of abnormal working conditions of the air spring distribution valve and the air spring pressure-maintaining valve on the diagnosis of air spring overpressure, thereby achieving accurate diagnosis of air spring overpressure.

[0055] Furthermore, in one embodiment, after the step of controlling the target empty spring distribution valve to be in an open state to obtain the second pressure value, the method further includes:

[0056] If it is detected that the second pressure value is less than the first pressure threshold, the air pump and the target empty spring distribution valve are controlled to be in an open state to inflate the target empty spring;

[0057] Obtain a third pressure value within a preset inflation time to determine a fault diagnosis result of the target air spring distribution valve and the target air spring pressure maintaining valve pipeline based on the size relationship between the third pressure value and a preset second pressure threshold, wherein the second pressure threshold is greater than the overpressure threshold.

[0058] For example, it should be noted that the specific value setting of the preset inflation time can be determined according to the actual needs of different models or through experimental calibration, and is not limited here. As long as the preset inflation time can limit the pressure change after inflation to a short time, such as setting the preset inflation time to 7s; in addition, the second pressure threshold refers to the value used to judge whether the pressure change after inflation in a short time is normal. The specific value setting can be determined according to the actual needs of different models or through experimental calibration, and is not limited here. As long as the second pressure threshold is greater than the overpressure threshold, such as setting the second pressure threshold to 18bar.

[0059] In this embodiment, if the second pressure value is less than the first pressure threshold, it indicates that there is an abnormality in the installation of the target air spring distribution valve or the target air spring pressure-maintaining valve pipeline. It should be understood that if the target air spring distribution valve is abnormal, it will result in the target air spring being unable to be inflated. In this case, the first pressure value collected by the pressure sensor is not the actual pressure value of the target air spring, but the pressure in the pipeline. However, since the pressure relief valve is opened in step S20, the high-pressure gas in the pipeline is discharged to the atmosphere, causing the pipeline pressure to drop. Therefore, the second pressure value collected by the pressure sensor is the pipeline pressure value, resulting in the second pressure value being less than the first pressure threshold. It should be noted that if the air spring pressure-maintaining valve pipeline is not assembled properly, it will be a one-way valve, that is, it can only inflate the air spring, and if the air spring pressure-maintaining valve pipeline is assembled, it will be a two-way valve, which can inflate and deflate the air spring; therefore, if the target air spring distribution valve is normal but the target air spring pressure-maintaining valve pipeline is installed abnormally, the pressure in the target air spring will not be discharged into the pipeline, so that the pressure in the pipeline is very low, so the first pressure value collected by the pressure sensor is the actual pressure value of the target air spring and the second pressure value is the pipeline pressure value, which causes the second pressure value to be less than the first pressure threshold.

[0060] Therefore, further diagnosis is needed to determine whether the target air spring distribution valve or the target air spring pressure-maintaining valve piping is faulty. Specifically, the air pump and target air spring distribution valve can be controlled to be in an open state to inflate the target air spring for a preset inflation time of 7 seconds. The corresponding third pressure value is then obtained through the pressure sensor. Based on the relationship between the third pressure value and the second pressure threshold of 18 bar, it can be determined whether the target air spring distribution valve or the target air spring pressure-maintaining valve piping is faulty.

[0061] Furthermore, in one embodiment, determining the fault diagnosis results of the target air spring distribution valve and the target air spring pressure-maintaining valve pipeline based on the magnitude relationship between the third pressure value and the preset second pressure threshold value includes:

[0062] If the third pressure value is greater than the second pressure threshold, it is determined that the target air spring distributing valve has a fault;

[0063] If the third pressure value is not greater than the second pressure threshold, it is determined that a fault exists in the target air spring pressure-maintaining valve pipeline and the target air spring is in an overpressure state.

[0064] For example, in this embodiment, if the third pressure value is greater than the second pressure threshold, it proves that the target air spring distribution valve is not opened normally, so that all the gas is blocked in the pipeline, so that the gas pressure can increase rapidly in a short time, so the ASC controller will alarm the target air spring distribution valve failure, but will not report the target air spring overpressure; and if the third pressure value is not greater than the second pressure threshold, it proves that the target air spring distribution valve is opened normally, that is, the target air spring can be inflated normally, but the target air spring pressure cannot be detected separately, indicating that the target air spring pressure maintaining valve is not installed in place, because the target air spring pressure maintaining valve is not installed in place, which will cause the gas to be unable to enter the pressure sensor, and then cause the pressure sensor to be unable to collect the pressure of the target air spring. Therefore, it can be determined that the target air spring pressure maintaining valve is not installed in place, so the ASC control will alarm the target air spring overpressure and the target air spring pressure maintaining valve pipeline is not installed in place; at the same time, it can also send a prompt to the instrument so that the staff can check the assembly of the target air spring pressure maintaining valve pipeline in time.

[0065] Furthermore, in one embodiment, after the step of determining whether the target empty spring is in an overpressure state, the method further includes:

[0066] controlling the pressure relief valve and the target empty spring distribution valve to be in an open state to exhaust the target empty spring;

[0067] When the pressure in the target empty spring drops to a preset overpressure recovery threshold, the exhaust operation is controlled to be in a stopped state, so that the target empty spring is in a non-overpressure state.

[0068] For example, it should be noted that the overpressure recovery threshold refers to the value used to determine whether the target air spring pressure has returned to normal. The specific value setting can be determined according to the actual needs of different vehicle models or determined through experimental calibration. It is not limited here. For example, the overpressure recovery threshold is set to 10 bar. In this embodiment, when the ASC controller alarms that the target air spring is over-pressured, the pressure relief valve and the target air spring distribution valve will be opened to exhaust the target air spring; then the pressure value of the target air spring can be detected every certain period of time (for example, 10 seconds). Once it is detected that the pressure in the target air spring is greater than the overpressure recovery threshold of 10 bar, it means that the target air spring pressure has returned to normal (that is, it has dropped to within the normal range). Then, the target air spring can be stopped from being exhausted, that is, the pressure relief valve and the target air spring distribution valve can be closed. At this time, the target air spring no longer has an under-pressure problem, so the target air spring over-pressure state can be canceled.

[0069] It is understandable that, when implementing the traditional diagnosis of air spring overpressure, only the pressure value of the pressure sensor is detected, which cannot rule out the possibility of distribution valve failure, resulting in possible misdiagnosis, and therefore there is a problem of low diagnostic accuracy; in addition, it can only detect that the pressure value of the pressure sensor is too high, but cannot accurately locate whether it is a distribution valve failure or an abnormal assembly failure of the pressure maintaining valve, and cannot accurately locate whether it is really an air spring overpressure, so there is also the problem of small diagnostic coverage.

[0070] This embodiment not only enables accurate diagnosis of empty spring overpressure to avoid false alarms of empty spring overpressure, and can promptly vent air when the empty spring is overpressured to control its pressure within a normal range, but also improves the diagnostic coverage, that is, it can simultaneously perform correct diagnosis of distribution valve and pressure-maintaining valve pipeline assembly failures, so that workers can quickly locate the cause of the problem and eliminate it in a targeted manner. In addition, the control logic of the empty spring overpressure diagnosis involved in this embodiment can be encapsulated in the ASC controller, so that the ASC can intelligently detect whether there is an overpressure problem in the empty spring and whether the relevant valves are working properly, so as to avoid manual inspection that consumes a lot of man-hours of disassembly, and can quickly locate the cause of the problem, thereby avoiding the problem of repeated disassembly without being able to locate the cause of the failure, thereby saving a lot of after-sales man-hours.

[0071] In a second aspect, an embodiment of the present application also provides an empty spring overpressure diagnostic device.

[0072] In one embodiment, referring to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of the air spring overpressure diagnostic device of this application. Figure 2 As shown, the empty spring overpressure diagnostic device includes:

[0073] a detection control module configured to, during the inflation process of the target air spring, control the stopping of the inflation of the target air spring when it is detected that the first pressure value collected by the pressure sensor in the air spring system is greater than a preset overpressure threshold; control the pressure relief valve to be in an open state, close the pressure relief valve after it has been open for a preset period of time, and control the target air spring distribution valve to be in an open state to obtain a second pressure value;

[0074] An overpressure diagnostic module is configured to determine that the target empty spring is in an overpressure state if it is detected that the second pressure value is less than a preset first pressure threshold, wherein the first pressure threshold is less than the overpressure threshold.

[0075] Furthermore, in one embodiment, the detection control module is also used to control the air pump and the target air spring distribution valve to be in an open state to inflate the target air spring if it is detected that the second pressure value is not less than the first pressure threshold; the overpressure diagnosis module is also used to obtain a third pressure value within a preset inflation time, so as to determine the fault diagnosis result of the target air spring distribution valve and the target air spring pressure maintaining valve pipeline based on the size relationship between the third pressure value and the preset second pressure threshold, and the second pressure threshold is greater than the overpressure threshold.

[0076] Furthermore, in one embodiment, the overvoltage diagnosis module is specifically configured to:

[0077] If the third pressure value is greater than the second pressure threshold, it is determined that the target air spring distributing valve has a fault;

[0078] If the third pressure value is not greater than the second pressure threshold, it is determined that a fault exists in the target air spring pressure-maintaining valve pipeline and the target air spring is in an overpressure state.

[0079] Furthermore, in one embodiment, the empty spring overvoltage diagnostic device further includes an overvoltage recovery module, which is configured to:

[0080] controlling the pressure relief valve and the target empty spring distribution valve to be in an open state to exhaust the target empty spring;

[0081] When the pressure in the target empty spring drops to a preset overpressure recovery threshold, the exhaust operation is controlled to be in a stopped state, so that the target empty spring is in a non-overpressure state.

[0082] Furthermore, in one embodiment, the detection control module is also used to: when it is detected that the first pressure value collected by the pressure sensor in the air spring system is not greater than a preset overpressure threshold, control the target air spring to continue to be in an inflated state to achieve the lifting operation of the target air spring.

[0083] Among them, the functional implementation of each module in the above-mentioned empty spring overpressure diagnostic device corresponds to the various steps in the above-mentioned empty spring overpressure diagnostic method embodiment, and its functions and implementation processes will not be repeated here one by one.

[0084] In a third aspect, an embodiment of the present application provides an air spring overpressure diagnostic device, which may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0085] Reference Figure 3 , Figure 3 Schematic diagram of the hardware structure of the empty spring overpressure diagnostic device involved in the embodiment of the present application. In the embodiment of the present application, the empty spring overpressure diagnostic device may include a processor, a memory, a communication interface and a communication bus.

[0086] The communication bus may be of any type and is used to interconnect the processor, memory, and communication interface.

[0087] Communication interfaces include input / output (I / O), physical, and logical interfaces, which interconnect components within the air spring overvoltage diagnostic device and connect the device to other devices (such as other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, or ATM interfaces; user devices can include displays and keyboards.

[0088] The 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.

[0089] The processor may be a general-purpose processor that can invoke an empty spring overpressure diagnostic program stored in a memory and execute the empty spring overpressure diagnostic method provided in the embodiments of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The methods executed when the empty spring overpressure diagnostic program is invoked can be referenced to the various embodiments of the empty spring overpressure diagnostic method of the present application and will not be further described here.

[0090] Those skilled in the art will understand that Figure 3 The hardware structure shown in the figure does not constitute a limitation to the present application and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0091] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0092] The readable storage medium of the present application stores an empty spring overpressure diagnostic program, wherein when the empty spring overpressure diagnostic program is executed by the processor, the steps of the empty spring overpressure diagnostic method as described above are implemented.

[0093] Among them, the method implemented when the empty spring overpressure diagnostic program is executed can refer to the various embodiments of the empty spring overpressure diagnostic method of the present application, and will not be repeated here.

[0094] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0095] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.

[0096] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0097] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0098] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.

[0099] 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 the necessary general hardware platform, of course, it 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 the present application, 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 enabling a terminal device to execute the methods described in each embodiment of the present application.

[0100] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for diagnosing overpressure of an empty spring, characterized in that: The empty spring overpressure diagnosis method includes: During the inflation process of the target empty spring, when it is detected that the first pressure value collected by the pressure sensor in the empty spring system is greater than a preset overpressure threshold, the inflation action of the target empty spring is stopped; Controlling the pressure relief valve to be in an open state, closing the pressure relief valve after the preset opening time, and controlling the target air spring distribution valve to be in an open state to obtain a second pressure value; If it is detected that the second pressure value is not less than a preset first pressure threshold, it is determined that the target empty spring is in an overpressure state, wherein the first pressure threshold is less than the overpressure threshold; If it is detected that the second pressure value is less than the first pressure threshold, the air pump and the target empty spring distribution valve are controlled to be in an open state to inflate the target empty spring; Obtaining a third pressure value within a preset inflation time period to determine a fault diagnosis result of a target air spring distribution valve and a target air spring pressure-maintaining valve pipeline based on a magnitude relationship between the third pressure value and a preset second pressure threshold, wherein the second pressure threshold is greater than the overpressure threshold; If the third pressure value is greater than the second pressure threshold, it is determined that the target air spring distributing valve has a fault; If the third pressure value is not greater than the second pressure threshold, it is determined that a fault exists in the target air spring pressure-maintaining valve pipeline and the target air spring is in an overpressure state.

2. The method for diagnosing overpressure of an empty spring according to claim 1, wherein: After the step of determining that the target empty spring is in an overpressure state, the method further includes: controlling the pressure relief valve and the target empty spring distribution valve to be in an open state to exhaust the target empty spring; When the pressure in the target empty spring drops to a preset overpressure recovery threshold, the exhaust operation is controlled to be in a stopped state, so that the target empty spring is in a non-overpressure state.

3. The method for diagnosing overpressure of an empty spring according to claim 1, wherein: The method further comprises: When it is detected that the first pressure value collected by the pressure sensor in the air spring system is not greater than the preset overpressure threshold, the target air spring is controlled to continue to be in an inflated state to achieve a lifting operation of the target air spring.

4. A device for diagnosing overpressure of an empty spring, characterized in that: The empty spring overpressure diagnostic device comprises: a detection control module configured to, during the inflation process of the target air spring, control the stopping of the inflation of the target air spring when it is detected that the first pressure value collected by the pressure sensor in the air spring system is greater than a preset overpressure threshold; control the pressure relief valve to be in an open state, close the pressure relief valve after it has been open for a preset period of time, and control the target air spring distribution valve to be in an open state to obtain a second pressure value; an overpressure diagnostic module, configured to determine that the target empty spring is in an overpressure state if it is detected that the second pressure value is less than a preset first pressure threshold, wherein the first pressure threshold is less than the overpressure threshold; The detection control module is further configured to control the air pump and the target empty spring distribution valve to be in an open state to inflate the target empty spring if it is detected that the second pressure value is not less than the first pressure threshold; The overpressure diagnostic module is also used to obtain a third pressure value within a preset inflation time, so as to determine the fault diagnosis result of the target air spring distribution valve and the target air spring pressure maintaining valve pipeline based on the size relationship between the third pressure value and a preset second pressure threshold, and the second pressure threshold is greater than the overpressure threshold; if the third pressure value is greater than the second pressure threshold, it is determined that the target air spring distribution valve has a fault; if the third pressure value is not greater than the second pressure threshold, it is determined that the target air spring pressure maintaining valve pipeline has a fault and the target air spring is in an overpressure state.

5. An empty spring overpressure diagnostic device, characterized in that: The empty spring overpressure diagnostic device includes a processor, a memory, and an empty spring overpressure diagnostic program stored in the memory and executable by the processor, wherein when the empty spring overpressure diagnostic program is executed by the processor, the steps of the empty spring overpressure diagnostic method as described in any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium, characterized in that The computer-readable storage medium stores an empty spring overpressure diagnostic program, wherein when the empty spring overpressure diagnostic program is executed by the processor, the steps of the empty spring overpressure diagnostic method according to any one of claims 1 to 3 are implemented.

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