A method and apparatus for detecting wiring faults

Abstract

In the application, the first signal is sent to the first clutch, the working state of the first electromagnetic valve and the working state of the first pressure sensor are obtained. According to the working state of the first electromagnetic valve and the working state of the first pressure sensor, the feedback state of the first clutch is determined. In response to the feedback state of the first clutch being inconsistent with the driving state of the first clutch, it is determined that the wiring of the first clutch has a fault. In the prior art, the connection state of the wire harness is detected by manual means. In the application, whether the wiring of the first clutch has a fault can be determined by judging whether the feedback state of the first clutch is consistent with the driving state of the first clutch, that is, whether the theoretical driving state of the first clutch with normal wiring under the first signal is consistent. The detection of the connection wire harness state is realized by using the electric control means, which is not affected by human factors and can save human resources, greatly improving the detection efficiency and accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the mechanical technical field, in particular to a wiring fault detection method. BACKGROUND

[0002] Before the gearbox is installed on the vehicle, it is necessary to verify the basic functions of the gearbox by detecting whether the wiring of the wire harness between the clutch and the electromagnetic valve in the gearbox is correct. In the assembly process, there are many parts such as controllers, sensors, electromagnetic valves and the like in the gearbox, and the assembly process is complicated. If not careful, the wire harness connection error may occur, resulting in abnormal driving of the electromagnetic valve or abnormal data collection of the sensor.

[0003] At present, the wiring of the wire harness between the clutch and the electromagnetic valve can only be detected and investigated by manual method. However, manual long-time wiring detection needs to spend a lot of manpower, and manual work for a long time is easy to be tired, and the detection result is easy to be affected by subjective factors, resulting in the problems of low efficiency and easy error of manual detection of wire harness connection.

[0004] Therefore, how to save human resources and improve the efficiency and accuracy of wire harness connection detection is a problem to be solved by those skilled in the art. SUMMARY

[0005] Based on the above problems, the present application provides a wiring fault detection method and device to save human resources and improve the efficiency and accuracy of wire harness connection detection. The embodiments of the present application disclose the following technical solutions.

[0006] In a first aspect, the present application provides a wiring fault detection method, comprising:

[0007] sending a first signal to a first clutch, the first clutch being connected with a first electromagnetic valve and a first pressure sensor;

[0008] obtaining the working state of the first electromagnetic valve and the working state of the first pressure sensor;

[0009] determining the feedback state of the first clutch according to the working state of the first electromagnetic valve and the working state of the first pressure sensor;

[0010] in response to the feedback state of the first clutch being inconsistent with the driving state of the first clutch, determining that the wiring of the first clutch has a fault, the driving state of the first clutch being the theoretical driving state of the first clutch with normal wiring under the first signal.

[0011] Optionally, before sending the first signal to the first clutch, the method further comprises:

[0012] sending a first parking instruction to a first parking device;

[0013] obtaining a working state of a second electromagnetic valve and a working state of a second pressure sensor, the second electromagnetic valve being a parking electromagnetic valve, and the second pressure sensor being a parking pressure sensor;

[0014] determining a first parking feedback state according to the working state of the second electromagnetic valve and the working state of the second pressure sensor;

[0015] determining that the first parking feedback state is consistent with a first parking state, and sending a first signal to a first clutch, the first parking state being a theoretical parking state of a first parking device with normal wiring under the first parking instruction.

[0016] Optionally, the determining the first clutch feedback state according to the working state of the first electromagnetic valve and the working state of the first pressure sensor comprises:

[0017] in response to the working state of the first electromagnetic valve and the working state of the first pressure sensor being normal, determining that the feedback state of the first clutch is consistent with the driving state of the first clutch;

[0018] in response to the working state of the first electromagnetic valve and the working state of the first pressure sensor being abnormal, determining that the feedback state of the first clutch is inconsistent with the driving state of the first clutch.

[0019] Optionally, when it is detected that the wiring has a fault, the method further comprises:

[0020] determining a detection result according to the working state of the first electromagnetic valve and the working state of the first pressure sensor.

[0021] Optionally, the method further comprises:

[0022] obtaining a first parameter set, the first parameter set comprising any one or more of a gearbox driving speed, a gearbox oil temperature, a controller power supply state, a power supply state of an electromagnetic valve and a power supply state of a pressure sensor;

[0023] determining that any one parameter in the first parameter set is not abnormal.

[0024] In a second aspect, the application provides a wiring fault detection device, comprising:

[0025] a first sending unit configured to send a first signal to a first clutch, the first clutch being connected to a first electromagnetic valve and a first pressure sensor;

[0026] a first obtaining unit configured to obtain a working state of the first electromagnetic valve and a working state of the first pressure sensor;

[0027] The first determining unit is configured to determine a feedback state of the first clutch according to the working state of the first electromagnetic valve and the working state of the first pressure sensor.

[0028] The first response unit is configured to determine that a wiring of the first clutch is faulty in response to the feedback state of the first clutch being inconsistent with a driving state of the first clutch, the driving state of the first clutch being a theoretical driving state of the first clutch with normal wiring under the first signal.

[0029] Optionally, the device further comprises:

[0030] The second sending unit is configured to send a first parking instruction to a first parking device.

[0031] The second acquiring unit is configured to acquire a working state of a second electromagnetic valve and a working state of a second pressure sensor, the second electromagnetic valve being a parking electromagnetic valve, and the second pressure sensor being a parking pressure sensor.

[0032] The second determining unit is configured to determine a first parking feedback state according to the working state of the second electromagnetic valve and the working state of the second pressure sensor.

[0033] The third determining unit is configured to determine that the first parking feedback state is consistent with a first parking state, send a first signal to the first clutch, and the first parking state being a theoretical parking state of the first parking device with normal wiring under the first parking instruction.

[0034] Optionally, the first determining unit is specifically configured to:

[0035] determine that the feedback state of the first clutch is consistent with the driving state of the first clutch in response to the working state of the first electromagnetic valve and the working state of the first pressure sensor being normal.

[0036] determine that the feedback state of the first clutch is inconsistent with the driving state of the first clutch in response to the working state of the first electromagnetic valve and the working state of the first pressure sensor being abnormal.

[0037] Optionally, the device further comprises:

[0038] The assigning unit is configured to determine a detection result according to the working state of the first electromagnetic valve and the working state of the first pressure sensor.

[0039] Optionally, the device further comprises:

[0040] The third acquisition unit is used to acquire a first parameter set, which includes any one or more of the following: transmission drive speed, transmission oil temperature, controller power supply status, solenoid valve and pressure sensor power supply status.

[0041] The fourth determining unit is used to determine that no abnormality has occurred in any one of the parameters in the first parameter set.

[0042] Thirdly, embodiments of this application provide an apparatus including a memory and a processor, the memory being used to store instructions or code, and the processor being used to execute the instructions or code to cause the apparatus to perform the method described in any of the preceding first aspects.

[0043] Fourthly, embodiments of this application provide a computer storage medium storing code, wherein when the code is executed, a device running the code implements the method described in any of the first aspects above.

[0044] Compared with the prior art, this application has the following beneficial effects:

[0045] In this application, a first signal is sent to the first clutch to obtain the operating status of the first solenoid valve and the first pressure sensor. Based on the operating status of the first solenoid valve and the first pressure sensor, the feedback status of the first clutch is determined. If the feedback status of the first clutch is inconsistent with the driving status of the first clutch, a wiring fault in the first clutch is determined. Compared to the prior art where the wiring harness connection status is detected manually, this application can determine whether there is a wiring fault in the first clutch by judging whether the feedback status of the first clutch is consistent with the driving status of the first clutch—that is, whether the theoretical driving state of the properly wired first clutch under the first signal. Using this electronically controlled method to detect the connection status of the wiring harness is not affected by human factors and can save manpower, greatly improving the efficiency and accuracy of detection. This overcomes the problems of existing technologies that require a large amount of manpower, and where human fatigue is common due to long working hours, and the detection results are easily affected by subjective factors, resulting in low efficiency and a high risk of errors in manual detection. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1A flowchart of a wiring fault detection method provided in an embodiment of this application;

[0048] Figure 2 A flowchart of another wiring fault detection method provided in this application embodiment;

[0049] Figure 3 This is a schematic diagram of a specific structure of a wiring fault detection device provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0051] It should be noted that the wiring fault detection method and apparatus provided in this application are for use in the mechanical field. The above is only an example and does not limit the application field of the method and apparatus provided in this application.

[0052] Currently, the wiring harness between the clutch and solenoid valve can only be inspected and checked manually. However, due to the large number of components such as controllers, sensors, and solenoid valves in the gearbox and the complex assembly process, manual wiring harness inspection is time-consuming, wastes a lot of manpower, and is prone to fatigue. Furthermore, the results are easily influenced by subjective factors, leading to low efficiency and a high error rate in manual wiring harness inspection.

[0053] The inventors, through research, proposed the technical solution of this application. This application can obtain the theoretical driving state and feedback state of the first clutch under a first signal when the wiring is normal. By judging whether the feedback state of the first clutch is consistent with the theoretical driving state of the first clutch under the first signal when the wiring is normal, it can be determined whether there is a fault in the wiring of the first clutch. Using this electronically controlled method to detect the status of the connecting harness is not affected by human factors and can save manpower, greatly improving the efficiency and accuracy of detection. This overcomes the problems of existing technologies that require a large amount of manpower, and where long working hours can easily lead to fatigue, and the detection results are easily affected by subjective factors, resulting in low efficiency and a high risk of errors in manual detection.

[0054] The method provided in this application embodiment can be executed by a vehicle controller ECU or a device for detecting the clutch.

[0055] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following description uses the method provided in the embodiments of the present application, executed by a database, as an example. To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following description uses the method provided in the embodiments of the present application, executed by a first device, as an example.

[0056] Figure 1 A flowchart of a wiring fault detection method provided in an embodiment of this application is shown below. Figure 1 As shown, the method includes:

[0057] S101: Send a first signal to the first clutch.

[0058] The first device sends a first signal to the first clutch in order to control the activation of the various components in the clutch.

[0059] S102: Obtain the operating status of the first solenoid valve and the operating status of the first pressure sensor.

[0060] Specifically, after sending the first signal to the first clutch, the first solenoid valve and the first pressure sensor enter the working state under the drive of the first signal. Correspondingly, the first solenoid valve, which is also the solenoid valve corresponding to the first clutch, needs to have normal operating current. At the same time, the first pressure sensor, which is also the pressure sensor corresponding to the first clutch, can also collect the corresponding pressure.

[0061] S103: Determine the feedback state of the first clutch based on the working state of the first solenoid valve and the working state of the first pressure sensor.

[0062] The first device can acquire the operating status of the first solenoid valve and the first pressure sensor. If the status of the first solenoid valve or the first pressure sensor is inconsistent with the expected status—that is, no current is detected on the first solenoid valve and no pressure is detected on the first pressure sensor—then it can be considered that the first solenoid valve or the first pressure sensor is in an abnormal state.

[0063] Furthermore, after sending the first signal to the first clutch, if current is detected on the first solenoid valve and pressure is detected on the first pressure sensor, it can be determined that the feedback state of the first clutch is consistent with the drive state of the first clutch. If no current is detected on the first solenoid valve or no pressure is detected on the first pressure sensor, it can be determined that the feedback state of the first clutch is inconsistent with the drive state of the first clutch.

[0064] S104: In response to the inconsistency between the feedback state of the first clutch and the drive state of the first clutch, it is determined that there is a fault in the wiring of the first clutch.

[0065] When it is determined that the feedback state of the first clutch is inconsistent with the drive state of the first clutch, it can be determined that there is a fault in the wiring of the first clutch.

[0066] In this application, a first signal is sent to the first clutch to obtain the operating status of the first solenoid valve and the first pressure sensor. Based on the operating status of the first solenoid valve and the first pressure sensor, the feedback status of the first clutch is determined. If the feedback status of the first clutch is inconsistent with the driving status of the first clutch, a wiring fault in the first clutch is determined. Compared to the prior art where the wiring harness connection status is detected manually, this application can determine whether there is a wiring fault in the first clutch by judging whether the feedback status of the first clutch is consistent with the driving status of the first clutch—that is, whether the theoretical driving state of the properly wired first clutch under the first signal. Using this electronically controlled method to detect the connection status of the wiring harness is not affected by human factors and can save manpower, greatly improving the efficiency and accuracy of detection. This overcomes the problems of existing technologies that require a large amount of manpower, and where human fatigue is common due to long working hours, and the detection results are easily affected by subjective factors, resulting in low efficiency and a high risk of errors in manual detection.

[0067] Based on the above description, the technical solution provided in this application embodiment, after determining that there is a fault in the wiring of the first clutch, can also assign values ​​to the detection results according to the working state of the first solenoid valve and the working state of the first pressure sensor.

[0068] Specifically, each clutch has a corresponding solenoid valve that drives a corresponding sensor to collect the current clutch pressure. If a first signal is sent to clutch 1, but the solenoid valve corresponding to clutch 1 has no actual current and the pressure sensor corresponding to clutch 1 has no pressure, while the solenoid valve corresponding to clutch 2 has actual current and the pressure sensor corresponding to clutch 2 has pressure, then it can be assumed that the wiring harness of the solenoid valve of clutch 1 is misconnected to the solenoid valve corresponding to clutch 2. The detection results can then be assigned values.

[0069] For example, if a drive harness of clutch 1 is found to be incorrectly connected to clutch 2, the detection result can be assigned a value of 1; if a drive harness of clutch 2 is found to be incorrectly connected to clutch 3, the detection result can be assigned a value of 2. The remaining clutches can be assigned values ​​sequentially based on their detection status. This is to distinguish between different harness connection errors and facilitate the inspection of incorrectly connected harnesses.

[0070] The difference between this specific embodiment and the above-described specific embodiment is that it adds a step of assigning values ​​to the detection results based on the operating states of the first solenoid valve and the first pressure sensor after determining that a fault exists in the wiring of the first clutch. The remaining steps are the same as in the above-described specific embodiment and will not be elaborated further here.

[0071] Figure 2 A flowchart of another wiring fault detection method provided in this application embodiment; as follows: Figure 2 As shown, the method includes:

[0072] S201: Obtain the first parameter set and determine that no parameter in the first parameter set is abnormal.

[0073] The first device acquires a first set of parameters. Specifically, the first set of parameters may include one or more of the following: transmission drive speed, transmission oil temperature, controller power supply status, solenoid valve and transmission power supply status. The parameters in the first set are then detected to ensure the transmission is in normal operating condition. It is determined that no parameter in the first set is abnormal.

[0074] S202: Send the first parking command to the first parking device.

[0075] To improve the accuracy of wiring fault detection, the first device in this application, after determining that no parameter in the first parameter set is abnormal, first checks whether the first parking feedback state is consistent with the first parking state. Only after confirming that the first parking feedback state and the first parking state are consistent is the first signal sent to the first clutch.

[0076] Furthermore, the first device sends a first parking command to the first parking device.

[0077] Specifically, a command to change the actual parking state of the vehicle can be sent to the first parking brake based on the vehicle's actual parking state. The actual parking state refers to the current state of the parking brake, which is mainly divided into braking state and released state. For example, if the actual parking state is braking, a command to release the braking state can be sent to the parking brake. This allows the operator to obtain the operating status of the second solenoid valve and the second pressure sensor. It should be noted that the first parking brake is connected to the second solenoid valve and the second pressure sensor.

[0078] S203: Determine the first parking feedback state based on the obtained operating state of the second solenoid valve and the operating state of the second pressure sensor.

[0079] After sending a first parking command to the first parking device, the first device acquires the operating status of the second solenoid valve and the operating status of the second pressure sensor.

[0080] Specifically, a parking command is sent to the first parking brake. Driven by this command, the second solenoid valve (corresponding to the first parking brake) needs to have normal operating current. Simultaneously, the second pressure sensor (corresponding to the first parking brake) should also be able to collect the corresponding pressure. If the state of the second solenoid valve or the second pressure sensor is inconsistent with the expected state—that is, no current is detected in the second solenoid valve, and no pressure is detected in the second pressure sensor—then the second solenoid valve or the second pressure sensor is considered to be in an abnormal state.

[0081] Furthermore, after sending a parking command to the first parking brake, if current is detected on the second solenoid valve and pressure is detected on the second pressure sensor, it can be determined that the first parking feedback state is consistent with the first parking state. If no current is detected on the second solenoid valve or no pressure is detected on the second pressure sensor, it can be determined that the first parking feedback state is inconsistent with the first parking state.

[0082] S204: Determine that the first parking feedback state is consistent with the first parking state, and send a first signal to the first clutch.

[0083] When the first device detects current on the second solenoid valve and pressure on the second pressure sensor, it can determine that the first parking feedback state is consistent with the first parking state and sends a first signal to the first clutch.

[0084] S205: Send the first signal to the first clutch.

[0085] S206: Determine the feedback state of the first clutch based on the obtained operating state of the first solenoid valve and the operating state of the first pressure sensor.

[0086] S207: In response to the inconsistency between the feedback state of the first clutch and the drive state of the first clutch, it is determined that there is a fault in the wiring of the first clutch.

[0087] The above are some specific implementations of the wiring fault detection method provided in the embodiments of this application. Based on this, this application also provides a corresponding device. The device provided in the embodiments of this application will be described below from the perspective of functional modularity. This device and the data input method described above can be referred to each other.

[0088] Figure 3 This is a schematic diagram of a specific structure of a wiring fault detection device provided in an embodiment of this application. For example... Figure 3 As shown, the device includes:

[0089] The first transmitting unit 300 is used to send a first signal to the first clutch; the first clutch is connected to the first solenoid valve and the first pressure sensor.

[0090] The first acquisition unit 310 is used to acquire the working status of the first solenoid valve and the working status of the first pressure sensor.

[0091] The first determining unit 320 is used to determine the feedback state of the first clutch based on the working state of the first solenoid valve and the working state of the first pressure sensor.

[0092] The first response unit 330 is used to respond to the inconsistency between the feedback state of the first clutch and the drive state of the first clutch, and to determine that there is a fault in the wiring of the first clutch. The drive state of the first clutch is the theoretical drive state of the first clutch with normal wiring under the first signal.

[0093] Optionally, the device further includes:

[0094] The second sending unit is used to send a first parking command to the first parking device;

[0095] The second acquisition unit is used to acquire the working status of the second solenoid valve and the working status of the second pressure sensor; the second solenoid valve is a parking solenoid valve, and the second pressure sensor is a parking pressure sensor.

[0096] The second determining unit is used to determine the first parking feedback state based on the working state of the second solenoid valve and the working state of the second pressure sensor.

[0097] The third determining unit is used to determine that the first parking feedback state is consistent with the first parking state, and sends a first signal to the first clutch. The first parking state is the theoretical parking state of the first parking brake with normal wiring under the first parking command.

[0098] Optionally, the first determining unit is specifically used for:

[0099] In response to the normal operating state of the first solenoid valve and the first pressure sensor, it is determined that the feedback state of the first clutch is consistent with the driving state of the first clutch.

[0100] In response to an abnormal operating state of the first solenoid valve and the first pressure sensor, it is determined that the feedback state of the first clutch is inconsistent with the driving state of the first clutch.

[0101] Optionally, the device further includes:

[0102] Assignment unit: Determines the detection result based on the working state of the first solenoid valve and the working state of the first pressure sensor.

[0103] Optionally, the device further includes:

[0104] The third acquisition unit is used to acquire a first parameter set, which includes any one or more of the following: transmission drive speed, transmission oil temperature, controller power supply status, solenoid valve and pressure sensor power supply status.

[0105] The fourth determining unit is used to determine that no abnormality has occurred in any one of the parameters in the first parameter set.

[0106] In this application's device, a first transmitting unit 300 is used to send a first signal to a first clutch; a first acquiring unit 310 is used to acquire the operating state of a first solenoid valve and the operating state of a first pressure sensor; a first determining unit 320 is used to determine the feedback state of the first clutch based on the operating state of the first solenoid valve and the operating state of the first pressure sensor; and a first responding unit 330 is used to determine that there is a wiring fault in the first clutch in response to a discrepancy between the feedback state and the driving state of the first clutch. Compared to the prior art where the wiring harness connection status is detected manually, this application can determine whether there is a wiring fault in the first clutch by judging whether the feedback state of the first clutch is consistent with the driving state of the first clutch—that is, whether the theoretical driving state of the properly wired first clutch under the first signal. Using this electronically controlled method to detect the connection harness status is not affected by human factors and can save manpower, greatly improving the efficiency and accuracy of detection. This overcomes the problems of existing technologies that require a large amount of manpower, and where human fatigue is common due to long working hours, and the detection results are easily affected by subjective factors, resulting in low efficiency and a high risk of errors in manual detection.

[0107] This application also provides corresponding devices and computer storage media for implementing the solutions provided in this application.

[0108] The device includes a memory and a processor. The memory stores instructions or code, and the processor executes the instructions or code to cause the device to perform the method described in any embodiment of this application.

[0109] The computer storage medium stores code, and when the code is run, the device running the code implements the method described in any embodiment of this application.

[0110] In the embodiments of this application, the terms "first" and "second" (if they exist) are used only as name identifiers and do not represent the order of first and second.

[0111] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus a general-purpose hardware platform. Based on this understanding, the technical solution of this application can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as a read-only memory (ROM) / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a router) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0112] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0113] The above description is merely an exemplary implementation of this application and is not intended to limit the scope of protection of this application.

Claims

1. A method for detecting wiring faults, characterized in that, include: A first signal is sent to the first clutch, which is connected to the first solenoid valve and the first pressure sensor; The operating state of the first solenoid valve and the operating state of the first pressure sensor are obtained. The operating state of the first solenoid valve is determined based on whether current is detected on the first solenoid valve, and the operating state of the first pressure sensor is determined based on whether pressure is detected on the first pressure sensor. The feedback state of the first clutch is determined based on the operating state of the first solenoid valve and the operating state of the first pressure sensor. The feedback state of the first clutch is determined based on whether current is detected on the first solenoid valve and pressure is detected on the first pressure sensor. In response to the inconsistency between the feedback state of the first clutch and the drive state of the first clutch, it is determined that there is a fault in the wiring of the first clutch. The drive state of the first clutch is the theoretical drive state of the first clutch with normal wiring under the first signal. The fault in the wiring of the first clutch is that the wiring harness between the first clutch and the first solenoid valve is incorrect. The method further includes, prior to sending the first signal to the first clutch: Send the first parking command to the first parking brake; The working status of the second solenoid valve and the working status of the second pressure sensor are obtained. The second solenoid valve is a parking solenoid valve, and the second pressure sensor is a parking pressure sensor. The first parking feedback state is determined based on the working state of the second solenoid valve and the working state of the second pressure sensor. Once it is determined that the first parking feedback state is consistent with the first parking state, a first signal is sent to the first clutch. The first parking state is the theoretical parking state of the first parking brake with normal wiring under the first parking command.

2. The method according to claim 1, characterized in that, Determining the first clutch feedback state based on the operating states of the first solenoid valve and the first pressure sensor includes: In response to the normal operating state of the first solenoid valve and the first pressure sensor, it is determined that the feedback state of the first clutch is consistent with the driving state of the first clutch. In response to an abnormal operating state of the first solenoid valve and the first pressure sensor, it is determined that the feedback state of the first clutch is inconsistent with the driving state of the first clutch.

3. The method according to claim 1, characterized in that, When a wiring fault is detected, the method further includes: The detection result is determined based on the operating status of the first solenoid valve and the operating status of the first pressure sensor.

4. The method according to claim 1, characterized in that, The method further includes: Obtain a first set of parameters, which includes any one or more of the following: transmission drive speed, transmission oil temperature, controller power supply status, solenoid valve and pressure sensor power supply status; It is determined that no abnormality has occurred in any of the parameters in the first parameter set.

5. A wiring fault detection device, characterized in that, include: A first transmitting unit is used to send a first signal to a first clutch; the first clutch is connected to a first solenoid valve and a first pressure sensor. The first acquisition unit is used to acquire the operating state of the first solenoid valve and the operating state of the first pressure sensor. The operating state of the first solenoid valve is determined based on whether current is detected on the first solenoid valve, and the operating state of the first pressure sensor is determined based on whether pressure is detected on the first pressure sensor. The first determining unit is used to determine the feedback state of the first clutch based on the working state of the first solenoid valve and the working state of the first pressure sensor. The feedback state of the first clutch is determined based on whether current is detected on the first solenoid valve and pressure is detected on the first pressure sensor. The first response unit is used to respond to the inconsistency between the feedback state of the first clutch and the drive state of the first clutch, determine that there is a fault in the wiring of the first clutch, the drive state of the first clutch is the theoretical drive state of the first clutch with normal wiring under the first signal, and the fault in the wiring of the first clutch is that the wiring harness between the first clutch and the first solenoid valve is incorrect. The device further includes: The second sending unit is used to send a first parking command to the first parking device; The second acquisition unit is used to acquire the working status of the second solenoid valve and the working status of the second pressure sensor. The second solenoid valve is a parking solenoid valve, and the second pressure sensor is a parking pressure sensor. The second determining unit is used to determine the first parking feedback state based on the working state of the second solenoid valve and the working state of the second pressure sensor. The third determining unit is used to determine that the first parking feedback state is consistent with the first parking state, and to send a first signal to the first clutch. The first parking state is the theoretical parking state of the first parking brake with normal wiring under the first parking command.

6. The apparatus according to claim 5, characterized in that, The first determining unit is specifically used for: In response to the normal operating state of the first solenoid valve and the first pressure sensor, it is determined that the feedback state of the first clutch is consistent with the driving state of the first clutch. In response to an abnormal operating state of the first solenoid valve and the first pressure sensor, it is determined that the feedback state of the first clutch is inconsistent with the driving state of the first clutch.

7. The apparatus according to claim 5, characterized in that, The device further includes: Assignment unit: Determines the detection result based on the working state of the first solenoid valve and the working state of the first pressure sensor.

8. The apparatus according to claim 5, characterized in that, The device further includes: The third acquisition unit is used to acquire a first parameter set, which includes any one or more of the following: transmission drive speed, transmission oil temperature, controller power supply status, solenoid valve and pressure sensor power supply status. The fourth determining unit is used to determine that no abnormality has occurred in any one of the parameters in the first parameter set.

Images