Wire harness fault detection method, device, equipment, medium and program product

Abstract

The invention discloses a wire harness fault detection method, device and equipment, a medium and a program product. According to the method, an automobile electrical system is sequentially divided into a power source I area, a power source II area, a switch control area and an execution area; a contact 1 is arranged at the grounding end of the power supply I area, a contact 2 is arranged between the power supply I area and the power supply II area, a contact 3 is arranged between the power supply II area and the switch control area, a contact 4 is arranged between the switch control area and the execution area, and a contact 5 is arranged at the grounding end of the execution area. And in response to a non-actuation signal of the automobile electrical system, controlling the contact 1 and the contact 2 to work, acquiring the voltage of each contact, judging the voltage of each contact, and determining a wire harness fault result of the automobile electrical system. According to the technical scheme, the electrical system of the automobile is partitioned and the contacts are arranged, so that the problem that a fault is difficult to locate when dysfunction occurs after trial assembly of the automobile is solved, and the efficiency and the accuracy of fault location are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a wiring harness fault detection method, equipment, storage medium and program product. Background Art

[0002] The wiring harness is the main part of the car's electrical system. It consists of hundreds of circuits and transmits power and signals between various electrical devices and components in the car. For example, the wiring harness transmits the battery's power to the starter so that the engine can start smoothly; it also transmits the control signal from the engine control unit to the injector to accurately control the amount of fuel injection.

[0003] The reliability of automotive wiring harnesses is directly related to the safety of the car. During the driving process of the car, the wiring harness has to withstand the test of various harsh environmental factors such as vibration, high temperature, humidity, etc. If the wiring harness has a fault such as a short circuit or a break, it may cause serious consequences such as failure of the key system of the car, failure of the airbag to pop out, or failure of the brake system. At present, a multimeter is usually used for troubleshooting. Engineers analyze and test based on experience, schematics, etc., and it takes a long time to find the cause of the fault. In addition, due to business division of labor and other reasons, it is impossible to distinguish whether it is a part problem or a wiring harness production design problem, which brings more troubles to the detection of automotive wiring harness status.

[0004] Therefore, how to provide a technical solution that can quickly and accurately troubleshoot automobile wiring harness faults is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The present application provides a wiring harness fault detection method, device, equipment, storage medium and program product, which solves the problem of difficulty in locating faults when functional failures occur after vehicle trial installation by partitioning the automotive electrical system and setting contacts, thereby improving the efficiency and accuracy of fault locating.

[0006] According to one aspect of the present application, a wiring harness fault detection method is provided, the method comprising: dividing an automobile electrical system into a power supply area I, a power supply area II, a switch control area and an execution area in sequence; wherein the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on / off state of the power supply, and the execution area is used to control the actuator to perform an action; a contact 1 is set at the ground end of the power supply area I, a contact 2 is set between the power supply area I and the power supply area II, a contact 3 is set between the power supply area II and the switch control area, a contact 4 is set between the switch control area and the execution area, and a contact 5 is set at the ground end of the execution area; in response to a non-actuation signal of the automobile electrical system, the contact 1 and the contact 2 are controlled to work, the voltage of each contact is obtained, and the voltage of each contact is judged to determine the wiring harness fault result of the automobile electrical system.

[0007] According to another aspect of the present application, a wiring harness fault detection device is provided, which includes: an electrical partitioning module, which is used to divide the automotive electrical system into a power supply area I, a power supply area II, a switch control area and an execution area in sequence; wherein the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on / off state of the power supply, and the execution area is used to control the actuator to perform an action; a contact setting module, which is used to set contact 1 at the ground end of the power supply area I, set contact 2 between the power supply area I and the power supply area II, set contact 3 between the power supply area II and the switch control area, set contact 4 between the switch control area and the execution area, and set contact 5 at the ground end of the execution area; a fault judgment module, which is used to control the operation of contact 1 and contact 2 in response to a non-actuation signal of the automotive electrical system, obtain the voltage of each contact, and judge the voltage of each contact to determine the wiring harness fault result of the automotive electrical system.

[0008] According to another aspect of the present application, an electronic device is provided, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the wiring harness fault detection method described in any embodiment of the present application.

[0009] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the wiring harness fault detection method described in any embodiment of the present application when executed.

[0010] According to another aspect of the present application, a computer program product is provided. The computer program product includes a computer program. When the computer program is executed by a processor, the wire harness fault detection method described in any embodiment of the present application is implemented.

[0011] The technical solution provided by the present application is to divide the automobile electrical system into power supply area I, power supply area II, switch control area and execution area in sequence; set contact 1 at the ground end of power supply area I, set contact 2 between power supply area I and power supply area II, set contact 3 between power supply area II and switch control area, set contact 4 between switch control area and execution area, and set contact 5 at the ground end of execution area; in response to the inaction signal of automobile electrical system, control contact 1 and contact 2 to work, obtain the voltage of each contact, and judge the voltage of each contact to determine the wiring harness fault result of automobile electrical system. The technical solution solves the problem of difficulty in locating faults when functional failure occurs after automobile trial assembly by zoning the automobile electrical system and setting contacts, and improves the efficiency and accuracy of fault location.

[0012] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A flowchart of a wiring harness fault detection method provided in Example 1 of the present application.

[0015] Figure 2 A schematic diagram of electrical system partitioning provided in Example 1 of the present application.

[0016] Figure 3 A flowchart of a wiring harness fault detection method provided in Embodiment 2 of the present application.

[0017] Figure 4 A schematic diagram of the contact setting of an electrical system provided in Example 2 of the present application.

[0018] Figure 5 Flow chart of a wiring harness fault detection device provided in Example 3 of the present application

[0019] Figure 6 It is a structural schematic diagram of a device for implementing a wiring harness fault detection method in an embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] Embodiment 1

[0023] Figure 1 This is a flowchart of a wiring harness fault detection method provided in the first embodiment of the present application. This embodiment is applicable to the case of performing wiring harness fault detection in a graphic drawing library. The method can be executed by a wiring harness fault detection device. The wiring harness fault detection device can be implemented in the form of hardware and / or software. The wiring harness fault detection device can be configured in a device with data processing capabilities. Figure 1 As shown, the method includes the following steps.

[0024] S110, dividing the automobile electrical system into a power supply area I, a power supply area II, a switch control area, and an execution area.

[0025] Among them, the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on and off state of the power supply, and the execution area is used to control the actuator to perform an action.

[0026] Power supply area I is a small battery area, such as a battery, whose main function is to supply power. For example, before the vehicle is started, some basic equipment in the vehicle, such as the anti-theft system and the clock, rely on the power of the battery to maintain operation.

[0027] The power supply II area is the distribution box area, and its main function is to use fuses and other components as system power supply and control. The distribution box contains multiple fuses, relays and other components. The function of the fuse is to automatically blow when the circuit current is too large to protect the circuit safety; the relay can realize the on-off control of the circuit and signal conversion. For example, when the vehicle is started, the generator starts to generate electricity. The power supply II area will reasonably distribute the electricity generated by the generator and the electricity of the battery. According to the needs of various electrical equipment, the electricity is transmitted to different circuit branches through fuses and relays, such as lighting circuits, air conditioning circuits, etc.

[0028] The switch control area is the switch determination area of ​​the system power supply, which is composed of various switches, buttons and control modules. Its main function is to determine whether the power supply is on or off. The switch can be manually operated, such as the light switch and wiper switch in the car; it can also be electronically controlled, such as the automatic air conditioning switch controlled by the vehicle electronic control unit. For example, when the driver presses the switch of the car headlights, the switch control area will receive the operation signal, which will be processed by a series of circuits and control modules, and then transmitted to the power supply II area, triggering the corresponding relay to close, so that the headlight circuit is connected to the power supply and the headlights are lit.

[0029] The execution area is the system function judgment execution area, including various actuators, such as motors, solenoid valves, speakers, etc. The main function is to control whether the actuator is executed and how to execute. The motor can drive the car's wipers, electric seats, window lifts and other equipment; the solenoid valve can control the fuel injection, automatic transmission shifting and other processes; the speaker is used to send sound signals. For example, in the car's window lifting system, when the switch control area sends a signal for the window to rise, the window motor in the execution area drives the window glass to rise through gears and other transmission devices according to the signal requirements, and converts electrical energy into the actual action of the window glass rising.

[0030] S120. Contact 1 is set at the grounding end of the power supply zone I, contact 2 is set between the power supply zone I and the power supply zone II, contact 3 is set between the power supply zone II and the switch control zone, contact 4 is set between the switch control zone and the execution zone, and contact 5 is set at the grounding end of the execution zone.

[0031] Among other things, contacts are used to connect individual sections in the vehicle electrical system and to monitor current paths.

[0032] In the present application, contacts can be set in two sections of power supply zone I, power supply zone II, switch control zone and execution zone to monitor the circuit connectivity of each zone when a fault occurs, determine the zone where the fault occurs, and enable staff to troubleshoot and resolve the fault more quickly and accurately.

[0033] Figure 2 This is a schematic diagram of an electrical system partition provided in Example 1 of the present application. Figure 2 As shown, A is the power supply area I, B is the power supply area II, C is the switch control area, D is the execution area, BATT (A) is the battery, FUSE (B) is the fuse, RELAY (C) is the relay, ECU (E) is the electronic control unit of the switch control area, MODULE (D) is the execution module of the execution area, ECU (F) is the electronic control unit of the execution area, and contacts 1, 2, 3, 4 and 5 are all connected to the fault test module.

[0034] S130, in response to the inactivation signal of the automobile electrical system, controlling the contact 1 and the contact 2 to operate, acquiring the voltage of each contact, and judging the voltage between the contacts to determine the wiring harness fault result of the automobile electrical system.

[0035] The automobile electrical system does not actuate the signal, that is, the automobile electrical system fails. In this application, the work of contact 1 and contact 2, that is, the two ends of the power supply I zone, provides a basis for subsequent fault judgment.

[0036] Specifically, the voltage of each contact can be obtained by connecting the positive probe of the voltmeter to the contact to be measured and the negative probe to the appropriate ground terminal to determine whether each partition has a short circuit or excessive voltage drop.

[0037] For example, if there is no voltage between contact 1 and contact 2, it may be that the power supply area I itself has no output power, which may be caused by faults such as battery exhaustion, plate damage, or a broken ground line of contact 1. If there is voltage between contact 1 and contact 2, but the voltage value is lower than the normal range, it may be that the wiring harness between power supply area I and contact 2 has too much resistance, such as aging, corrosion, or poor contact of the wiring harness, resulting in excessive voltage drop.

[0038] For another example, when there is voltage at contact 2 but no voltage at contact 3, it is likely that the wiring harness between contact 2 and contact 3 is broken, that is, the power cannot be transmitted from power supply II area to switch control area, the wiring harness may be cut somewhere in the middle, the plug is loose, or the fuse is blown. If the voltage drop between contact 2 and contact 3 is too large, it may be that the resistance of the wiring harness is abnormally increased, which may be caused by damage to the wiring harness, poor contact, or other high-resistance fault points.

[0039] For example, if there is no voltage between contact 3 and contact 4, it may indicate that there is a problem with the connection between the switch control area and the execution area, such as a circuit break or the control switch is not working properly. A large voltage drop may be due to line quality problems or poor contact in the middle.

[0040] The embodiment of the present invention provides a wiring harness fault detection method, which divides the automobile electrical system into power supply area I, power supply area II, switch control area and execution area in sequence; sets contact 1 at the ground end of power supply area I, sets contact 2 between power supply area I and power supply area II, sets contact 3 between power supply area II and switch control area, sets contact 4 between switch control area and execution area, and sets contact 5 at the ground end of execution area; in response to the automobile electrical system inaction signal, controls contact 1 and contact 2 to work, obtains the voltage of each contact, and judges the voltage between each contact to determine the wiring harness fault result of the automobile electrical system. This technical solution solves the problem of difficulty in locating faults when functional failure occurs after automobile trial assembly by zoning the automobile electrical system and setting contacts, and improves the efficiency and accuracy of fault location.

[0041] Embodiment 2

[0042] Figure 3 This is a flow chart of a wiring harness fault detection method provided in the second embodiment of the present application. This embodiment is optimized based on the above embodiment, specifically, the fault judgment process is refined. Figure 3 As shown, the method of this embodiment specifically includes the following steps.

[0043] S210, dividing the automobile electrical system into a power supply area I, a power supply area II, a switch control area and an execution area in sequence.

[0044] Among them, the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on and off state of the power supply, and the execution area is used to control the actuator to perform an action.

[0045] S220, contact 1 is set at the ground end of the power supply zone I, contact 2 is set between the power supply zone I and the power supply zone II, contact 3 is set between the power supply zone II and the switch control zone, contact 4 is set between the switch control zone and the execution zone, and contact 5 is set at the ground end of the execution zone.

[0046] S230, in response to the inaction signal of the automobile electrical system, controlling the operation of contact 1 and contact 2, determining a first voltage of contact 2, and determining that power supply zone I is faulty if the first voltage is less than or equal to a first preset threshold value, and determining a first voltage difference between contact 2 and contact 3 if the first voltage is greater than a first preset threshold value.

[0047] The first preset threshold value may be 8 V. Since the control contacts 1 and 2 are working, it is possible to determine whether there is a fault in the power supply zone I by determining whether the first voltage measured at the contact 2 is higher than the first preset threshold value. If there is no fault, it is possible to determine whether there is a fault in the subsequent zones.

[0048] Optionally, if the first voltage is less than or equal to a first preset threshold, the power supply zone I is determined to be faulty, including: if the first voltage does not exist, the power supply zone I is determined to be faulty and a prompt is given to check whether the power supply zone I is correctly installed; if the first voltage exists and is less than or equal to the first preset threshold, contact 2 is determined to be abnormal, the power supply zone I is faulty and a prompt is given that the battery voltage of the power supply zone I is too low.

[0049] If the first voltage at contact 2 does not exist, it indicates that the small battery in power zone I may not be correctly installed, and a prompt message may be generated to prompt the staff to check whether the small battery in power zone I is correctly installed.

[0050] If the first voltage at contact 2 exists but is less than or equal to the first preset threshold, it indicates that the battery in power zone I is in working condition, but the battery voltage is too low and needs to be replaced. A prompt message can be generated to prompt the staff to check whether the battery in power zone I needs to be replaced.

[0051] S240. If the first voltage difference is greater than or equal to a second preset threshold, it is determined that the contact 3 is abnormal and the power supply zone II is faulty. If the first voltage difference is less than the second preset threshold, the second voltage difference between the contact 2 and the contact 4 is determined.

[0052] The second preset threshold may be 0.1V.

[0053] Since only contacts 1 and 2 are controlled to work in the present application, when the voltage difference between contacts 2 and 3 is greater than or equal to the second preset threshold, it indicates that contact 3 has an abnormal condition such as a weak connection, that is, a power supply zone II fault.

[0054] If the voltage difference between contact 2 and contact 3 is less than the second preset threshold, it indicates that contact 3 is normal and power supply zone II is normal. The subsequent partitions can be judged to determine the second voltage difference between contact 2 and contact 4.

[0055] S250. If the second voltage difference is greater than or equal to a second preset threshold, it is determined that the contact 4 is abnormal and the switch control area is faulty. If the second voltage difference is less than the second preset threshold, it is determined that the contact 4 is normal and the execution area is faulty.

[0056] If the second voltage difference between contact 2 and contact 4 is greater than or equal to the second preset threshold, it indicates that contact 4 is abnormal, and according to the above judgment that there is no fault in power supply area I and power supply area II, it indicates that there is a fault in the switch control area.

[0057] If the second voltage difference between contact 2 and contact 4 is less than the second preset threshold, it indicates that contact 4 is normal, but since the automobile electrical system does not work, and according to the above, it is judged that there is no fault in power supply area I, power supply area II and switch control area, so the fault can only be in the execution area.

[0058] Optionally, contact 6 is set at the ground end of the switch control area; accordingly, if the second voltage difference is greater than or equal to the second preset threshold, it is determined that the contact 4 is abnormal and the switch control area is faulty, including: if the second voltage difference is greater than or equal to the second preset threshold, a fourth voltage difference between the contact 1 and the contact 6 is determined; if the fourth voltage difference is less than the second preset threshold, it is determined that the reference end is normal, the switch control area is faulty, and a prompt is given to check the electronic control unit signal in the switch control area; if the fourth voltage difference is greater than or equal to the second preset threshold, a prompt is given to determine that the reference end is abnormal, the switch control area is faulty, and the switch reference device function in the switch control area is checked.

[0059] In case of a fault in the switch control area, the present application sets a free contact 6 at the ground end of the switch control area, such as Figure 4 As shown, it is used to determine whether the electronic control unit in the switch control area is abnormal or the switch reference device is abnormal.

[0060] Specifically, if the fourth voltage difference between contact 1 and contact 6 is stable and less than the second preset threshold value, it indicates that the reference end is normal, and the switch control area failure may be caused by an abnormality of the electronic control unit in the switch control area, so the staff can be prompted to check the electronic control unit signal in the switch control area; if the fourth voltage difference between contact 1 and contact 6 is stable and greater than or equal to the second preset threshold value, it indicates that the reference end is faulty, and the switch reference device in the switch control area may cause the switch control area failure, so the staff can be prompted to check the function of the switch reference device in the switch control area.

[0061] Optionally, if the second voltage difference is less than the second preset threshold, it is determined that the contact 4 is normal and the execution area is faulty, including: if the second voltage difference is less than the second preset threshold, determining the third voltage difference between the contact 1 and the contact 5; if the third voltage difference is greater than or equal to the second preset threshold, it is determined that the contact 5 is abnormal, the execution area is faulty, and a prompt is given to check the grounding status of the execution module in the execution area; if the third voltage difference is less than the second preset threshold, it is determined that the contact 5 is normal, the execution area is faulty, and a prompt is given to check the electronic control unit signal in the execution area.

[0062] In the case where there is a fault in the execution area, the present application judges the third voltage difference between contact 1 and contact 5. Since the voltage in the series circuit is equal everywhere, if the third voltage difference is stable and less than the second preset threshold value, it indicates that contact 5 is normal and the execution module in the execution area is also normal. A prompt message can be generated to prompt the staff to check whether there is an abnormality in the electronic control unit signal in the execution area; if the third voltage difference is stable and greater than or equal to the second preset threshold value, it indicates that contact 5 is abnormal, which may be caused by an abnormality in the grounding terminal of the execution module in the execution area. Therefore, a prompt message can be generated to prompt the staff to check the grounding status of the execution module in the execution area.

[0063] An embodiment of the present invention provides a wiring harness fault detection method, which divides an automobile electrical system into a power supply area I, a power supply area II, a switch control area and an execution area in sequence; sets a contact 1 at the ground end of the power supply area I, sets a contact 2 between the power supply area I and the power supply area II, sets a contact 3 between the power supply area II and the switch control area, sets a contact 4 between the switch control area and the execution area, and sets a contact 5 at the ground end of the execution area; determines a first voltage of contact 2, and if the first voltage is less than or equal to a first preset threshold, determines that the power supply area I is faulty, and if the first voltage is greater than the first preset threshold, determines a first voltage difference between contact 2 and contact 3; if the first voltage difference is greater than or equal to a second preset threshold, determines that contact 3 is abnormal and the power supply area II is faulty, and if the first voltage difference is less than the second preset threshold, determines a second voltage difference between contact 2 and contact 4; if the second voltage difference is greater than or equal to the second preset threshold, determines that contact 4 is abnormal and the switch control area is faulty, and if the second voltage difference is less than the second preset threshold, determines that contact 4 is normal and the execution area is faulty. This technical solution further improves the detection efficiency and accuracy of wiring harness faults in the automotive electrical system by performing fault judgment according to the electrical system partitions, gradually narrowing the fault scope.

[0064] Embodiment 3

[0065] Figure 5 A schematic diagram of the structure of a wiring harness fault detection device provided in the third embodiment of the present application is shown in FIG. Figure 5 As shown, the device includes the following modules.

[0066] The electrical partition module 310 is used to divide the automobile electrical system into a power supply area I, a power supply area II, a switch control area and an execution area in sequence; wherein the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on / off state of the power supply, and the execution area is used to control the actuator to perform an action;

[0067] A contact setting module 320, configured to set a contact 1 at the ground end of the power supply zone I, set a contact 2 between the power supply zone I and the power supply zone II, set a contact 3 between the power supply zone II and the switch control zone, set a contact 4 between the switch control zone and the execution zone, and set a contact 5 at the ground end of the execution zone;

[0068] The fault judgment module 330 is used to control the contact 1 and the contact 2 to work in response to the inaction signal of the automobile electrical system, obtain the voltage of each contact, and judge the voltage of each contact to determine the wiring harness fault result of the automobile electrical system.

[0069] An embodiment of the present invention provides a wiring harness fault detection device, which partitions the automobile electrical system and sets contacts to solve the problem of difficulty in locating faults when functional failures occur after automobile trial assembly, thereby improving the efficiency and accuracy of fault locating.

[0070] Furthermore, the fault judgment module 330 includes:

[0071] a first judgment unit, configured to determine a first voltage of the contact 2, and determine that the power supply zone I is faulty if the first voltage is less than or equal to a first preset threshold, and determine a first voltage difference between the contact 2 and the contact 3 if the first voltage is greater than the first preset threshold;

[0072] a second judgment unit, configured to determine that the contact 3 is abnormal and the power supply zone II is faulty if the first voltage difference is greater than or equal to a second preset threshold, and to determine a second voltage difference between the contact 2 and the contact 4 if the first voltage difference is less than the second preset threshold;

[0073] The third judgment unit is used to determine that the contact 4 is abnormal and the switch control area is faulty if the second voltage difference is greater than or equal to a second preset threshold value, and to determine that the contact 4 is normal and the execution area is faulty if the second voltage difference is less than the second preset threshold value.

[0074] Furthermore, the first judgment unit is specifically used to:

[0075] If the first voltage does not exist, it is determined that the power supply zone I is faulty and a prompt is given to check whether the power supply zone I is correctly installed;

[0076] If the first voltage exists and is less than or equal to a first preset threshold, it is determined that the contact 2 is abnormal, the power supply zone I is faulty, and it is prompted that the battery voltage of the power supply zone I is too low.

[0077] Furthermore, a contact 6 is provided at the ground end of the switch control area; accordingly, the third judgment unit is specifically used for:

[0078] If the second voltage difference is greater than or equal to a second preset threshold, determining a fourth voltage difference between the contact 1 and the contact 6;

[0079] If the fourth voltage difference is less than the second preset threshold, it is determined that the reference terminal is normal and the switch control area is faulty, and a prompt is given to check the signal of the electronic control unit in the switch control area;

[0080] If the fourth voltage difference is greater than or equal to the second preset threshold, it is determined that the reference terminal is abnormal and the switch control area is faulty, and a prompt is given to check the function of the switch reference device in the switch control area.

[0081] Furthermore, the third judgment unit is further specifically configured to:

[0082] If the second voltage difference is less than a second preset threshold, determining a third voltage difference between the contact 1 and the contact 5;

[0083] If the third voltage difference is greater than or equal to the second preset threshold, it is determined that the contact 5 is abnormal, the execution area is faulty, and a prompt is given to check the grounding state of the execution module in the execution area;

[0084] If the third voltage difference is less than the second preset threshold, it is determined that the contact 5 is normal and the execution area is faulty, and a prompt is given to check the electronic control unit signal in the execution area.

[0085] A wiring harness fault detection device provided in an embodiment of the present application can execute a wiring harness fault detection method provided in any embodiment of the present application, and has functional modules and beneficial effects corresponding to the execution method.

[0086] Embodiment 4

[0087] Figure 6 A schematic diagram of a device 10 that can be used to implement an embodiment of the present application is shown. The device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and / or required herein.

[0088] like Figure 6As shown, the device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the device 10 can also be stored. The processor 11, ROM 12 and RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0089] A number of components in the device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0090] The processor 11 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a wiring harness fault detection method.

[0091] In some embodiments, the wiring harness fault detection method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the wiring harness fault detection method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the wiring harness fault detection method in any other appropriate manner (e.g., by means of firmware).

[0092] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0093] The computer programs for implementing the methods of the present application may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer programs are executed by the processor, the functions / operations specified in the flow charts and / or block diagrams are implemented. The computer programs may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0094] In the context of the present application, a computer readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device or equipment. A computer readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer readable storage medium may be a machine readable signal medium. A more specific example of a machine readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0095] To provide interaction with a user, the systems and techniques described herein can be implemented on a device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0096] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0097] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0098] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution of this application can be achieved, and this document is not limited here.

[0099] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A wiring harness fault detection method, characterized in that: The method comprises: The automobile electrical system is divided into a power supply area I, a power supply area II, a switch control area and an execution area in sequence; wherein the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on / off state of the power supply, and the execution area is used to control the actuator to perform an action; A contact 1 is provided at the ground end of the power supply area I, a contact 2 is provided between the power supply area I and the power supply area II, a contact 3 is provided between the power supply area II and the switch control area, a contact 4 is provided between the switch control area and the execution area, and a contact 5 is provided at the ground end of the execution area; In response to the inactivation signal of the automobile electrical system, the contact 1 and the contact 2 are controlled to operate, the voltage of each contact is obtained, and the voltage of each contact is judged to determine the wiring harness fault result of the automobile electrical system.

2. The method according to claim 1, characterized in that The voltage of each contact point is judged to determine the wiring harness fault result of the automotive electrical system, including: Determine a first voltage of the contact 2, and if the first voltage is less than or equal to a first preset threshold, determine that the power supply zone I is faulty, and if the first voltage is greater than the first preset threshold, determine a first voltage difference between the contact 2 and the contact 3; If the first voltage difference is greater than or equal to a second preset threshold, it is determined that the contact 3 is abnormal and the power supply zone II is faulty; if the first voltage difference is less than the second preset threshold, a second voltage difference between the contact 2 and the contact 4 is determined; If the second voltage difference is greater than or equal to the second preset threshold, it is determined that the contact 4 is abnormal and the switch control area is faulty. If the second voltage difference is less than the second preset threshold, it is determined that the contact 4 is normal and the execution area is faulty.

3. The method according to claim 2, characterized in that If the first voltage is less than or equal to a first preset threshold, determining that the power supply zone I is faulty includes: If the first voltage does not exist, it is determined that the power supply zone I is faulty and a prompt is given to check whether the power supply zone I is correctly installed; If the first voltage exists and is less than or equal to a first preset threshold, it is determined that the contact 2 is abnormal, the power supply zone I is faulty, and it is prompted that the battery voltage of the power supply zone I is too low.

4. The method according to claim 2, characterized in that: A contact 6 is provided at the ground end of the switch control area; Correspondingly, if the second voltage difference is greater than or equal to a second preset threshold, it is determined that the contact 4 is abnormal and the switch control area is faulty, including: If the second voltage difference is greater than or equal to a second preset threshold, determining a fourth voltage difference between the contact 1 and the contact 6; If the fourth voltage difference is less than the second preset threshold, it is determined that the reference terminal is normal and the switch control area is faulty, and a prompt is given to check the signal of the electronic control unit in the switch control area; If the fourth voltage difference is greater than or equal to the second preset threshold, it is determined that the reference terminal is abnormal and the switch control area is faulty, and a prompt is given to check the function of the switch reference device in the switch control area.

5. The method according to claim 2, characterized in that: If the second voltage difference is less than a second preset threshold, it is determined that the contact 4 is normal and the execution area is faulty, including: If the second voltage difference is less than a second preset threshold, determining a third voltage difference between the contact 1 and the contact 5; If the third voltage difference is greater than or equal to the second preset threshold, it is determined that the contact 5 is abnormal, the execution area is faulty, and a prompt is given to check the grounding state of the execution module in the execution area; If the third voltage difference is less than the second preset threshold, it is determined that the contact 5 is normal and the execution area is faulty, and a prompt is given to check the electronic control unit signal in the execution area.

6. A wiring harness fault detection device, characterized in that: The device comprises: An electrical partitioning module is used to divide the automobile electrical system into a power supply area I, a power supply area II, a switch control area and an execution area in sequence; wherein the power supply area I is used for power supply, the power supply area II is used for power control, the switch control area is used to determine the on / off state of the power supply, and the execution area is used to control the actuator to perform an action; A contact setting module, used to set contact 1 at the ground end of the power supply zone I, set contact 2 between the power supply zone I and the power supply zone II, set contact 3 between the power supply zone II and the switch control zone, set contact 4 between the switch control zone and the execution zone, and set contact 5 at the ground end of the execution zone; The fault judgment module is used to control the contact 1 and the contact 2 to work in response to the inaction signal of the automobile electrical system, obtain the voltage of each contact, and judge the voltage of each contact to determine the wiring harness fault result of the automobile electrical system.

7. An electronic device, characterized in that: The device comprises: At least one processor; and a memory in communication with the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor so that the at least one processor can execute the wiring harness fault detection method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the wiring harness fault detection method according to any one of claims 1 to 5 when executed.

9. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the computer program implements the wiring harness fault detection method according to any one of claims 1 to 5.

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