A method for diagnosing and resetting an automatic pantograph lowering device, a system, and a vehicle.

Abstract

This invention belongs to the field of electric-driven transportation equipment testing technology, and provides a method, reset method, system, and vehicle for diagnosing and resetting automatic pantograph lowering devices. The method includes acquiring a pantograph raising command signal, an ADD status signal, and a pantograph lowering position signal, and determining the validity of all three. If all three are valid, the pantograph raising command signal is held for a preset time and then inverted to obtain a first inverted signal. The pantograph lowering position signal is then directly inverted to obtain a second inverted signal. An AND operation is performed on the ADD status signal, the first inverted signal, and the second inverted signal. The result of the AND operation is then determined to be true. If true, the automatic pantograph lowering device is determined to be faulty, and this fault is latched; otherwise, the automatic pantograph lowering device is determined to be fault-free.

Description

Technical Field

[0001] This invention belongs to the field of electric drive transportation equipment testing technology, and particularly relates to a method for diagnosing and resetting an automatic pantograph lowering device, a system, and a vehicle. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] An automatic dropping device (ADD) malfunction is triggered when the pantograph's carbon sliding plate wears to a certain level. The ADD status signal is provided by a pressure switch on the pantograph. The ADD pressure switch and the pantograph raising / lowering indicator switch are connected in parallel in the air circuit. Both pressure switches are in a changing state at the beginning of the pantograph raising process.

[0004] Even when the pantograph is not raised, it will still give an ADD status signal. This means that directly judging whether the automatic pantograph lowering device has malfunctioned based on the ADD status signal will lead to false alarms, which will affect maintenance efficiency and the normal use of the automatic pantograph lowering device, and may even make it impossible to accurately reset the automatic pantograph lowering device. Summary of the Invention

[0005] In order to solve the technical problems existing in the background art, the present invention provides a method, reset method, system and vehicle for judging the fault of automatic pantograph lowering device, which can accurately judge whether the automatic pantograph lowering device has malfunctioned and avoid false alarms of the automatic pantograph lowering device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The first aspect of the present invention provides a method for diagnosing malfunctions in an automatic pantograph lowering device, comprising:

[0008] Acquire the raising bow command signal, the ADD status signal, and the lowering bow position signal, and determine the validity of the three;

[0009] When all three are valid, the bow raising command signal is held for a preset time and then the inversion logic operation is performed to obtain the first inversion signal. The bow lowering signal is then directly inverted to obtain the second inversion signal.

[0010] Perform an AND operation on the ADD status signal, the first inverted signal, and the second inverted signal. Determine if the result of the AND operation is true. If it is true, the automatic pantograph lowering device is determined to be faulty, and this fault is latched. Otherwise, the automatic pantograph lowering device is determined to be fault-free.

[0011] A second aspect of the present invention provides an automatic bow lowering device fault diagnosis system.

[0012] In one or more embodiments, an automatic pantograph lowering device fault diagnosis system includes:

[0013] The signal acquisition module is used to acquire the bow raising command signal, the ADD status signal, and the bow lowering position signal, and to determine the validity of the three signals.

[0014] The inversion logic operation module is used to perform an inversion logic operation to obtain the first inversion signal after holding the bow raising command signal for a preset time when all three are valid, and to directly perform an inversion logic operation on the bow lowering signal to obtain the second inversion signal.

[0015] The AND logic operation module is used to perform an AND logic operation on the ADD status signal, the first inverted signal, and the second inverted signal, and determine whether the result of the AND logic operation is true. If it is true, the automatic pantograph lowering device is determined to be faulty, and the fault is latched; otherwise, the automatic pantograph lowering device is determined to be fault-free.

[0016] In one or more embodiments, an automatic pantograph lowering device fault diagnosis system includes:

[0017] First AND gate, second AND gate, third AND gate, fourth AND gate, timer, first inverter and second inverter;

[0018] One input of the first AND gate, the second AND gate, and the third AND gate are all connected to a high level, and the other input is connected to the bow raising command signal, the ADD status signal, and the bow lowering position signal, respectively.

[0019] When the results of the first AND gate, the second AND gate, and the third AND gate are all true:

[0020] The input of the delay unit is connected to the pantograph raising command signal, which is then input to the first inverter after a preset delay time; the input of the second inverter is directly connected to the pantograph lowering position signal.

[0021] The input terminals of the fourth AND gate are respectively connected to the ADD status signal, the output terminal of the first inverter, and the output terminal of the second inverter. The output result of the fourth AND gate is used to determine whether the automatic pantograph lowering device has malfunctioned.

[0022] A third aspect of the present invention provides a method for resetting an automatic pantograph lowering device malfunction, comprising:

[0023] After determining that the automatic pantograph lowering device has malfunctioned, the pantograph actively lowers itself, reacquires the pantograph raising command signal and the ADD status signal, and determines the validity of both.

[0024] When both are valid, hold the bow raising command signal for a preset time and then perform an inversion logic operation to obtain a third inversion signal;

[0025] Perform an AND operation on the ADD status signal and the third inverted signal, and determine whether the result of the AND operation is true. If it is true, it is determined that the fault of the automatic pantograph lowering device still exists, and the fault is continued to be latched; otherwise, the fault of the automatic pantograph lowering device is reset.

[0026] A fourth aspect of the present invention provides an automatic pantograph lowering device fault reset system, comprising:

[0027] The signal validity judgment module is used to determine the validity of the pantograph when the pantograph actively lowers after the automatic pantograph lowering device is determined to have malfunctioned, and to reacquire the pantograph raising command signal and ADD status signal.

[0028] The bow raising command signal inversion module is used to hold the bow raising command signal for a preset time when both are valid, and then perform an inversion logic operation to obtain a third inversion signal.

[0029] The fault reset module is used to perform an AND operation on the ADD status signal and the third inverted signal, and determine whether the result of the AND operation is true. If it is true, it is determined that the fault of the automatic pantograph lowering device still exists, and the fault is continued to be latched; otherwise, the fault of the automatic pantograph lowering device is reset.

[0030] A fifth aspect of the present invention provides a computer-readable storage medium.

[0031] In one or more embodiments, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps in the automatic bow lowering device fault judgment method as described above.

[0032] In one or more embodiments, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps in the automatic bow lowering device fault reset method as described above.

[0033] A sixth aspect of the present invention provides a computer device.

[0034] In one or more embodiments, a computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, implementing the steps in the automatic bow lowering device fault judgment method as described above.

[0035] In one or more embodiments, a computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor to implement the steps in the automatic bow lowering device fault reset method described above.

[0036] A seventh aspect of the present invention provides a vehicle.

[0037] In one or more embodiments, a vehicle includes an automatic pantograph lowering device fault diagnosis system as described above.

[0038] In one or more embodiments, a vehicle includes an automatic pantograph lowering device fault reset system as described above.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] This invention integrates the ADD status signal, the first inverted signal, and the second inverted signal into an AND operation. When the AND operation result is true, the automatic pantograph lowering device is determined to have malfunctioned and the fault is latched. The first inverted signal is obtained by inverting the pantograph raising command signal after holding it for a preset time, and the second inverted signal is obtained by directly inverting the pantograph lowering position signal. This invention achieves accurate judgment of ADD faults through the above logical judgment, avoiding the impact on maintenance efficiency and normal operation of the automatic pantograph lowering device caused by falsely reporting ADD faults during normal pantograph use.

[0041] After accurately determining that the automatic bow lowering device is faulty, this invention reacquires the bow raising command signal and the ADD status signal. When both are valid, the bow raising command signal is held for a preset time before an inversion logic operation is performed to obtain a third inversion signal. Finally, the fault in the automatic bow lowering device is determined by the AND logic operation of the ADD status signal and the third inversion signal. If the fault still exists, it is latched; otherwise, the fault in the automatic bow lowering device is reset. This improves the maintenance efficiency of the automatic bow lowering device and ensures its normal use.

[0042] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0043] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0044] Figure 1 This is a flowchart of the automatic bow lowering device fault judgment method according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the automatic bow lowering device fault judgment system according to an embodiment of the present invention;

[0046] Figure 3 This is a flowchart of the automatic bow lowering device fault reset method according to an embodiment of the invention;

[0047] Figure 4This is a schematic diagram of the fault reset system of the dynamic lowering bow device according to an embodiment of the present invention. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0049] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] As is known from the background technology, an ADD status signal is also given when the pantograph is not raised. This means that directly judging whether the automatic pantograph lowering device has malfunctioned based on the ADD status signal will lead to false alarms, thereby affecting maintenance efficiency and the normal use of the automatic pantograph lowering device, and may even make it impossible to accurately reset the automatic pantograph lowering device.

[0052] Determining the ADD status during the pantograph's non-raising state is prone to false alarms; only the state after the pantograph is fully raised can be accurately assessed. This invention provides a method, reset method, and system for diagnosing and resetting automatic pantograph lowering devices, which can accurately determine whether the automatic pantograph lowering device has malfunctioned, avoiding false alarms.

[0053] Example 1

[0054] like Figure 1 As shown in the figure, this embodiment provides a method for diagnosing faults in an automatic pantograph lowering device, which specifically includes the following steps:

[0055] S101: Obtain the raising command signal, ADD status signal, and lowering signal, and determine the validity of the three.

[0056] In practice, the pantograph raising command signal is a pulse signal, and it is valid when high. The ADD status signal is the air pressure signal in the pipeline of the automatic pantograph lowering device. The pantograph lowering position signal is a level signal, and it is valid when high.

[0057] The valid state of the ADD status signal is also high.

[0058] S102: When all three are valid, after holding the bow raising command signal for a preset time, perform an inversion logic operation to obtain the first inversion signal, and directly perform an inversion logic operation on the bow lowering signal to obtain the second inversion signal.

[0059] It should be noted here that the preset time for holding the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

[0060] For example, the pantograph raising command signal is kept for a preset time of T1. T1 is usually related to different pantograph parameters, such as T1 being 15s.

[0061] S103: Perform an AND operation on the ADD status signal, the first inverted signal, and the second inverted signal, and determine whether the result of the AND operation is true. If it is true, determine that the automatic pantograph lowering device has malfunctioned and latch the fault; otherwise, determine that the automatic pantograph lowering device has no fault.

[0062] Once the automatic pantograph lowering device is latched due to a fault, this state cannot be reset regardless of the pantograph's status, unless an ADD fault reset logic judgment process is executed.

[0063] This embodiment combines the ADD status signal, the first inverted signal, and the second inverted signal into an AND operation. When the AND operation result is true, it is determined that the automatic pantograph lowering device has malfunctioned and the fault is latched. The first inverted signal is obtained by inverting the pantograph raising command signal after holding it for a preset time, and the second inverted signal is obtained by directly inverting the pantograph lowering position signal. Through the above logical judgment, the ADD fault can be accurately judged, avoiding the impact on maintenance efficiency and normal use of the automatic pantograph lowering device caused by falsely reporting ADD faults during normal use of the pantograph.

[0064] Example 2

[0065] like Figure 2 As shown, this embodiment provides an automatic pantograph lowering device fault diagnosis system, which specifically includes the following modules:

[0066] The signal acquisition module is used to acquire the bow raising command signal, the ADD status signal, and the bow lowering position signal, and to determine the validity of the three signals.

[0067] The inversion logic operation module is used to perform an inversion logic operation to obtain the first inversion signal after holding the bow raising command signal for a preset time when all three are valid, and to directly perform an inversion logic operation on the bow lowering signal to obtain the second inversion signal.

[0068] The AND logic operation module is used to perform an AND logic operation on the ADD status signal, the first inverted signal, and the second inverted signal, and determine whether the result of the AND logic operation is true. If it is true, the automatic pantograph lowering device is determined to be faulty, and the fault is latched; otherwise, the automatic pantograph lowering device is determined to be fault-free.

[0069] It should be noted that each module in this embodiment corresponds one-to-one with each step in Embodiment 1, and their specific implementation processes are the same, so they will not be repeated here.

[0070] Example 3

[0071] This embodiment provides an automatic pantograph lowering device fault judgment system, which includes a first AND gate, a second AND gate, a third AND gate, a fourth AND gate, a time delay, a first inverter, and a second inverter;

[0072] One input of the first AND gate, the second AND gate, and the third AND gate are all connected to a high level, and the other input is connected to the bow raising command signal, the ADD status signal, and the bow lowering position signal, respectively.

[0073] When the results of the first AND gate, the second AND gate, and the third AND gate are all true:

[0074] The input of the delay unit is connected to the pantograph raising command signal, which is then input to the first inverter after a preset delay time; the input of the second inverter is directly connected to the pantograph lowering position signal.

[0075] The input terminals of the fourth AND gate are respectively connected to the ADD status signal, the output terminal of the first inverter, and the output terminal of the second inverter. The output result of the fourth AND gate is used to determine whether the automatic pantograph lowering device has malfunctioned.

[0076] The pantograph raising command signal is a pulse signal, and it is valid when it is high. The ADD status signal is the air pressure signal in the automatic pantograph lowering device pipeline. The pantograph lowering position signal is a level signal, and it is valid when it is high. The valid state of the ADD status signal is also high.

[0077] It should be noted here that the preset time for holding the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

[0078] For example, the pantograph raising command signal is kept for a preset time of T1. T1 is usually related to different pantograph parameters, such as T1 being 15s.

[0079] In practice, when the output of the fourth AND gate is true, it is determined that the automatic pantograph lowering device has malfunctioned; when the output of the fourth AND gate is false, it is determined that the automatic pantograph lowering device is not malfunctioning.

[0080] In one or more embodiments, the automatic pantograph lowering device fault determination system further includes a latch for latching faults in the automatic pantograph lowering device.

[0081] Example 4

[0082] like Figure 3 As shown, this embodiment provides a method for resetting an automatic pantograph lowering device malfunction, which specifically includes the following steps:

[0083] S201: After determining that the automatic pantograph lowering device has malfunctioned, the pantograph is actively lowered, and the pantograph raising command signal and ADD status signal are reacquired, and the validity of both is determined.

[0084] In specific implementation, the automatic bow lowering device fault judgment method described in Embodiment 1 above is used to determine whether the automatic bow lowering device has malfunctioned.

[0085] In practice, the pantograph raising command signal is a pulse signal, and it is valid when it is high. The ADD status signal is the air pressure signal in the pipeline of the automatic pantograph lowering device. The valid state of the ADD status signal is also high.

[0086] S202: When both are valid, hold the bow raising command signal for a preset time and then perform an inversion logic operation to obtain a third inversion signal.

[0087] It should be noted here that the preset time for holding the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

[0088] For example, the pantograph raising command signal is kept for a preset time of T1. T1 is usually related to different pantograph parameters, such as T1 being 15s.

[0089] S203: Perform an AND operation on the ADD status signal and the third inverted signal, and determine whether the result of the AND operation is true. If it is true, it is determined that the fault of the automatic pantograph lowering device still exists, and the fault is latched in. Otherwise, the fault of the automatic pantograph lowering device is reset.

[0090] In this embodiment, after accurately determining the fault of the automatic bow lowering device, the bow raising command signal and the ADD status signal are reacquired. When both are valid, the bow raising command signal is held for a preset time and then an inversion logic operation is performed to obtain a third inversion signal. Finally, the fault of the automatic bow lowering device is determined by the AND logic operation of the ADD status signal and the third inversion signal. If the fault still exists, it is latched; otherwise, the fault of the automatic bow lowering device is reset. This improves the maintenance efficiency of the automatic bow lowering device and ensures its normal use.

[0091] Example 5

[0092] like Figure 4As shown, this embodiment provides an automatic pantograph lowering device fault reset system, which specifically includes the following modules:

[0093] The signal validity judgment module is used to determine the validity of the pantograph when the pantograph actively lowers after the automatic pantograph lowering device is determined to have malfunctioned, and to reacquire the pantograph raising command signal and ADD status signal.

[0094] The bow raising command signal inversion module is used to hold the bow raising command signal for a preset time when both are valid, and then perform an inversion logic operation to obtain a third inversion signal.

[0095] The fault reset module is used to perform an AND operation on the ADD status signal and the third inverted signal, and determine whether the result of the AND operation is true. If it is true, it is determined that the fault of the automatic pantograph lowering device still exists, and the fault is continued to be latched; otherwise, the fault of the automatic pantograph lowering device is reset.

[0096] It should be noted that each module in this embodiment corresponds one-to-one with each step in embodiment four, and their specific implementation processes are the same, so they will not be repeated here.

[0097] It is also understandable that the automatic pantograph lowering device fault reset system can also be implemented using control devices such as relays, logic gate devices, or programmable logic controllers.

[0098] Example 6

[0099] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in the automatic bow lowering device fault judgment method as described in Embodiment 1 above.

[0100] Example 7

[0101] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in the automatic bow lowering device fault reset method described in Embodiment 4 above.

[0102] Example 8

[0103] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, to implement the steps in the automatic bow lowering device fault judgment method as described in Embodiment 1 above.

[0104] Example 9

[0105] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, to implement the steps in the automatic bow lowering device fault reset method described in Embodiment 4 above.

[0106] Example 10

[0107] This embodiment provides a vehicle that includes an automatic pantograph lowering device fault diagnosis system as described in Embodiment 2 above.

[0108] Example 11

[0109] This embodiment provides a vehicle that includes an automatic pantograph lowering device fault diagnosis system as described in Embodiment 3 above.

[0110] Example 12

[0111] This embodiment provides a vehicle that includes an automatic pantograph lowering device fault reset system as described in Embodiment 5 above.

[0112] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0113] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for diagnosing faults in an automatic pantograph lowering device, characterized in that, include: Acquire the raising bow command signal, the ADD status signal, and the lowering bow position signal, and determine the validity of the three; When all three are valid, the bow raising command signal is held for a preset time and then the inversion logic operation is performed to obtain the first inversion signal. The bow lowering signal is then directly inverted to obtain the second inversion signal. Perform an AND operation on the ADD status signal, the first inverted signal, and the second inverted signal. Determine if the result of the AND operation is true. If it is true, the automatic pantograph lowering device is determined to be faulty and the fault is latched. Otherwise, the automatic pantograph lowering device is determined to be fault-free. The bow-raising command signal is a pulse signal; The ADD status signal is the air pressure signal in the pipeline of the automatic bow lowering device; The bow lowering positioning signal is a level signal; The preset time for maintaining the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

2. The method for diagnosing faults in the automatic pantograph lowering device as described in claim 1, characterized in that, The bow raising command signal is valid when it is high.

3. The method for diagnosing faults in the automatic pantograph lowering device as described in claim 1, characterized in that, The bow lowering signal is valid when it is at a high level.

4. A fault diagnosis system for an automatic pantograph lowering device, characterized in that, include: The signal acquisition module is used to acquire the bow raising command signal, the ADD status signal, and the bow lowering position signal, and to determine the validity of the three signals. The inversion logic operation module is used to perform an inversion logic operation to obtain the first inversion signal after holding the bow raising command signal for a preset time when all three are valid, and to directly perform an inversion logic operation on the bow lowering signal to obtain the second inversion signal. The AND logic operation module is used to perform an AND logic operation on the ADD status signal, the first inverted signal, and the second inverted signal, and determine whether the result of the AND logic operation is true. If it is true, the automatic pantograph lowering device is determined to be faulty and the fault is latched; otherwise, the automatic pantograph lowering device is determined to be fault-free. The bow-raising command signal is a pulse signal; The ADD status signal is the air pressure signal in the pipeline of the automatic bow lowering device; The bow lowering positioning signal is a level signal; The preset time for maintaining the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

5. A fault diagnosis system for an automatic pantograph lowering device, characterized in that, It includes a first AND gate, a second AND gate, a third AND gate, a fourth AND gate, a timer, a first inverter, and a second inverter; One input of the first AND gate, the second AND gate, and the third AND gate are all connected to a high level, and the other input is connected to the bow raising command signal, the ADD status signal, and the bow lowering position signal, respectively. When the results of the first AND gate, the second AND gate, and the third AND gate are all true: The input of the delay unit is connected to the pantograph raising command signal, which is then input to the first inverter after a preset delay time; the input of the second inverter is directly connected to the pantograph lowering position signal. The input terminals of the fourth AND gate are respectively connected to the ADD status signal, the output terminal of the first inverter, and the output terminal of the second inverter. The output result of the fourth AND gate is used to determine whether the automatic pantograph lowering device has malfunctioned. The bow-raising command signal is a pulse signal; The ADD status signal is the air pressure signal in the pipeline of the automatic bow lowering device; The bow lowering positioning signal is a level signal; The preset time is the time from when the pantograph receives the raising command to when the raising is completed.

6. The automatic pantograph lowering device fault diagnosis system as described in claim 5, characterized in that, When the output of the fourth AND gate is true, the automatic pantograph lowering device is determined to be faulty; when the output of the fourth AND gate is false, the automatic pantograph lowering device is determined to be without fault.

7. The automatic pantograph lowering device fault diagnosis system as described in claim 5 or 6, characterized in that, The automatic pantograph lowering device fault diagnosis system also includes a latch, which is used to latch faults in the automatic pantograph lowering device.

8. A method for resetting an automatic pantograph lowering device malfunction, characterized in that, include: After determining that the automatic pantograph lowering device has malfunctioned, the pantograph actively lowers itself, reacquires the pantograph raising command signal and the ADD status signal, and determines the validity of both. When both are valid, hold the bow raising command signal for a preset time and then perform an inversion logic operation to obtain a third inversion signal; Perform an AND operation on the ADD status signal and the third inverted signal, and determine whether the result of the AND operation is true. If it is true, it is determined that the fault of the automatic pantograph lowering device still exists, and the fault is latched in. Otherwise, the fault of the automatic pantograph lowering device is reset. The bow-raising command signal is a pulse signal; The ADD status signal is the air pressure signal in the pipeline of the automatic bow lowering device; The preset time for maintaining the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

9. The automatic bow lowering device fault reset method as described in claim 8, characterized in that, The automatic bow lowering device malfunction can be determined by using the fault judgment method of any one of claims 1-3.

10. An automatic pantograph lowering device fault reset system, characterized in that, include: The signal validity judgment module is used to determine the validity of the pantograph when the pantograph actively lowers after the automatic pantograph lowering device is determined to have malfunctioned, and to reacquire the pantograph raising command signal and ADD status signal. The bow raising command signal inversion module is used to hold the bow raising command signal for a preset time when both are valid, and then perform an inversion logic operation to obtain a third inversion signal. The fault reset module is used to perform an AND operation on the ADD status signal and the third inverted signal, and determine whether the result of the AND operation is true. If it is true, it is determined that the fault of the automatic pantograph lowering device still exists, and the fault is latched in; otherwise, the fault of the automatic pantograph lowering device is reset. The bow-raising command signal is a pulse signal; The ADD status signal is the air pressure signal in the pipeline of the automatic bow lowering device; The preset time for maintaining the pantograph raising command signal is the time from when the pantograph receives the raising command to when the raising is completed.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps in the automatic bow lowering device fault judgment method as described in any one of claims 1-3; or When the program is executed by the processor, it implements the steps in the automatic bow lowering device fault reset method as described in any one of claims 8-9.

12. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, Implement the steps in the automatic pantograph lowering device fault judgment method as described in any one of claims 1-3; or Implement the steps in the automatic bow lowering device fault reset method as described in any one of claims 8-9.

13. A vehicle, characterized in that, Includes the automatic pantograph lowering device fault diagnosis system as described in claim 4; or Includes the automatic pantograph lowering device fault diagnosis system as described in claims 5-7; or Includes the automatic bow lowering device fault reset system as described in claim 10.

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