CN117761431A - Fault testing method, device and system for vehicle - Google Patents
Fault testing method, device and system for vehicle Download PDFInfo
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Abstract
The invention discloses a fault test method, device and system for a vehicle, which relate to the field of vehicle test, and after a test instruction is acquired, each test item corresponding to the test instruction is determined, a test standard corresponding to each test item is determined according to the test instruction, then each test task corresponding to each test item is generated according to the test standard corresponding to each test item, each test task is sequentially sent to the vehicle to be tested, so that feedback data generated by the vehicle to be tested according to the test tasks is acquired, and finally the test standard, the test task and the feedback data corresponding to each test item are all sent to an upper computer. Test tasks corresponding to different projects and standards are generated by determining test projects and test standards corresponding to the test instructions so as to perform fault test on the vehicle to be tested, and the test equipment does not need to be modified or secondarily developed, so that the technical level requirements on users are reduced, and the fault test efficiency is improved.
Description
Technical Field
The present invention relates to the field of vehicle testing, and in particular, to a method, an apparatus, and a system for testing a fault of a vehicle.
Background
The new energy vehicle comprises a low-voltage electric system and a high-voltage electric system, with the development of new energy technology, high-voltage circuits and low-voltage circuits in the vehicle are more and more, and the safety and stability of the high-voltage electric system directly influence the quality and user experience of the new energy vehicle, so that when the new energy vehicle leaves a factory, the high-voltage electric system and the low-voltage electric system need to be subjected to fault test.
However, since the test standards of different types of fault tests are different, the test standards of the same type of fault type in different application scenarios are also different; in the prior art, when the test standard is changed, the test equipment needs to be modified and secondarily developed to meet the changed test standard. Because the realization process of transformation and secondary development is complex and time-consuming, the requirements on the technical level of users are high, and the efficiency of fault test is low.
Disclosure of Invention
The invention aims to provide a fault test method, device and system for a vehicle, which are used for generating test tasks corresponding to different projects and standards by determining test projects and test standards corresponding to test instructions so as to perform fault test on the vehicle to be tested, and the test equipment is not required to be modified or secondarily developed, so that the technical level requirements on users are reduced, and the fault test efficiency is improved.
In order to solve the technical problems, the invention provides a fault testing method of a vehicle, comprising the following steps:
after a test instruction is acquired, determining each test item corresponding to the test instruction;
determining a test standard corresponding to each test item according to the test instruction;
generating test tasks corresponding to the test items according to the test standards corresponding to the test items;
sequentially sending each test task to a vehicle to be tested so as to acquire feedback data generated by the vehicle to be tested according to the test tasks;
and sending the test standard, the test task and the feedback data corresponding to each test item to an upper computer.
In one aspect, determining each test item corresponding to the test instruction includes:
judging whether a test item corresponding to the test instruction exists in a preset memory or not;
if yes, acquiring a test item corresponding to the test instruction in the preset memory;
if not, generating a prompt signal so as to prompt a user to write the test item corresponding to the test instruction in the preset memory.
On the one hand, each test task is sequentially sent to a vehicle to be tested so as to obtain feedback data generated by the vehicle to be tested according to the test task, and the method comprises the following steps:
respectively determining target equipment to be tested in the vehicle to be tested corresponding to each test task;
controlling a bipolar power supply connected with a power supply end of the vehicle to be tested to generate an output waveform required by one of the test tasks;
acquiring a feedback waveform generated by target equipment to be tested in the vehicle to be tested according to the output waveform of the test item;
taking the feedback waveform as the feedback data;
and returning to the step of controlling the bipolar power supply connected with the power supply end of the vehicle to be tested to generate the output waveform required by one of the test tasks until the bipolar power supply generates all the output waveforms required by the test tasks.
In one aspect, obtaining feedback data generated by the vehicle to be tested according to the test task includes:
acquiring a feedback message of the vehicle to be tested, which is received by a communication module;
and analyzing the feedback message based on the communication protocol of the communication module to obtain the feedback data.
In one aspect, the communication module is a CAN communication module.
On the one hand, the analyzing the feedback message based on the communication protocol of the communication module to obtain the feedback data includes:
and analyzing the feedback message based on a preset DBC file corresponding to the communication module to obtain the feedback data.
On the one hand, the test task and the feedback data are both sent to an upper computer, including:
constructing a data report containing the test task and the feedback data;
and sending the data report to the upper computer.
In one aspect, the method further comprises:
when the insertion of the external equipment is detected, judging whether equipment type information and physical address information of the external equipment are stored in a preset memory or not;
if yes, configuring the external equipment according to the equipment type information and the physical address information;
if not, after receiving a user instruction containing the equipment type information and the physical address information, configuring the external equipment according to the user instruction.
The application also provides a fault testing device of a vehicle, comprising:
a memory for storing a computer program;
and a processor for implementing the steps of the fault testing method of the vehicle when executing the computer program.
The application also provides a fault test system of the vehicle, which comprises an upper computer, an oscilloscope, a bipolar power supply and the fault test device of the vehicle;
the upper computer is respectively connected with the oscilloscope, the bipolar power supply and the fault testing device of the vehicle;
the fault testing device of the vehicle is respectively connected with the oscilloscope and the bipolar power supply.
The method, the device and the system for testing the faults of the vehicle have the advantages that after the test instruction is acquired, each test item corresponding to the test instruction is determined, the test standard corresponding to each test item is determined according to the test instruction, then the test task corresponding to each test item is generated according to the test standard corresponding to each test item, each test task is sequentially sent to the vehicle to be tested, so that feedback data generated by the vehicle to be tested according to the test task are acquired, and finally the test standard, the test task and the feedback data corresponding to each test item are all sent to the upper computer. Test tasks corresponding to different projects and standards are generated by determining test projects and test standards corresponding to the test instructions so as to perform fault test on the vehicle to be tested, and the test equipment does not need to be modified or secondarily developed, so that the technical level requirements on users are reduced, and the fault test efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for fault testing of a vehicle provided by the present application;
fig. 2 is a schematic structural diagram of a fault testing device for a vehicle provided by the present application;
FIG. 3 is a schematic diagram of a test task of the E01 test provided in the present application;
FIG. 4 is a schematic diagram of test waveforms for the E01 test provided herein;
FIG. 5 is a schematic diagram of a test task of the E02 test provided in the present application;
FIG. 6 is a schematic diagram of test waveforms for the E02 test provided herein;
fig. 7 is a schematic diagram of a test task of the E03 test provided in the present application;
FIG. 8 is a schematic diagram of test waveforms for the E03 test provided herein;
FIG. 9 is a schematic diagram of device connection for E10 testing provided herein;
FIG. 10 is a schematic diagram of a test task of the E10 test provided herein;
FIG. 11 is a schematic diagram of test waveforms for the E10 test provided herein;
FIG. 12 is a schematic diagram of a test task of the E06 test provided herein;
FIG. 13 is a schematic diagram of test waveforms for the E06 test provided herein;
FIG. 14 is a schematic diagram of a test task of the E19 test provided herein;
fig. 15 is a schematic structural diagram of another vehicle fault testing device provided in the present application.
Detailed Description
The invention provides a fault test method, device and system for a vehicle, which are used for generating test tasks corresponding to different projects and standards by determining test projects and test standards corresponding to test instructions so as to perform fault test on the vehicle to be tested, and the test equipment is not required to be modified or secondarily developed, so that the technical level requirements on users are reduced, and the fault test efficiency is improved.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Because the testing standards of different customers on vehicles are more and not uniform, a single testing device is generally difficult to meet the requirements of all customers on the testing standards, and the existing testing device is required to be improved or secondarily developed, but the difficulty of improving or secondarily developing the testing device is great, the process is complex and time-consuming, and the investment and the use of the testing device are greatly influenced and limited.
Referring to fig. 1, fig. 1 is a flowchart of a fault testing method for a vehicle provided in the present application, including:
s1: after the test instruction is acquired, determining each test item corresponding to the test instruction;
in order to solve the above-mentioned problems, in the present application, various test items to be performed on a vehicle to be tested may be stored in advance in a processor of a test apparatus; and for each test item, the actual test tasks of the test item under various different user requirements and different test standards are required to be stored.
S2: determining a test standard corresponding to each test item according to the test instruction;
s3: generating test tasks corresponding to all the test items according to the test standards corresponding to all the test items;
the test instruction sent by the user includes various test items that the user wants to test, requirements and test standards for each test item. In order to further facilitate the use and operation of the user, a corresponding relation between the user operation and the test instruction can be pre-established, and when the user performs one-time user operation, the corresponding test instruction is automatically determined according to the operation, and each test item corresponding to the test instruction is determined.
Specifically, in consideration of the fact that the user's usage habit does not change much, after the user inputs the test standard for the first time, the test standard may be adopted as the standard adopted for the subsequent test all the time until the user inputs a new test standard. In addition, a plurality of commonly used test items are integrated into one test instruction, a plurality of test instructions can be obtained according to the number and the types of the integrated test items, then the corresponding relation between the test instructions and different user operations is established, when the user performs the operation, the corresponding test instructions are found according to the user operation, and each test task is determined by adopting the previous test standard.
For example, assuming that all test items are integrated into one test instruction, the instruction and (comprehensive test) user operation are associated, the user only needs to click a corresponding button or key (comprehensive test) on the host computer or the user terminal, the processor can automatically determine that the test instruction is the comprehensive test, determine that all the test items are required to be tested at the present time, and finally determine to obtain each test task by adopting the test standard of each test item.
S4: sequentially sending each test task to the vehicle to be tested so as to acquire feedback data generated by the vehicle to be tested according to the test tasks;
s5: and sending the test standard, the test task and the feedback data corresponding to each test item to the upper computer.
Considering that the test time required by a single test task is long, after the test tasks are determined, one of the test tasks is sent to the vehicle to be tested according to a certain sequence, and after the vehicle to be tested generates corresponding feedback data according to the test tasks, the feedback data, the current test task and the test standard are sent to the upper computer, so that a user can observe the test result of the current test task in time. And only sending the test tasks to the upper computer, then selecting the next test task according to the sequence, sending the test tasks to the vehicle to be tested, and so on until the fault test of the vehicle is determined to be finished after all the test tasks are tested.
For the test task and the feedback data, the vehicle to be tested is controlled to execute certain steps through the test task and generate the feedback data, after the test task and the feedback data are sent to the upper computer, a user judges whether the feedback data generated by the vehicle to be tested are normal data according to the test standard and the test task, if so, the vehicle to be tested passes the test task, and if not, the vehicle to be tested has faults; by the method, whether the vehicle to be tested has faults in the test tasks of various test standards can be effectively detected. In addition, in addition to the transmission to the upper computer, if the processing capability of the processor is strong, the processor may determine the processing capability, and transmit the determination result to the upper computer for user confirmation.
In summary, after a test instruction is obtained, determining each test item corresponding to the test instruction, determining a test standard corresponding to each test item according to the test instruction, generating a test task corresponding to each test item according to the test standard corresponding to each test item, sequentially sending each test task to a vehicle to be tested, so as to obtain feedback data generated by the vehicle to be tested according to the test task, and finally sending the test standard, the test task and the feedback data corresponding to each test item to an upper computer. Test tasks corresponding to different projects and standards are generated by determining test projects and test standards corresponding to the test instructions so as to perform fault test on the vehicle to be tested, and the test equipment does not need to be modified or secondarily developed, so that the technical level requirements on users are reduced, and the fault test efficiency is improved.
Based on the above embodiments:
in some embodiments, determining each test item to which a test instruction corresponds includes:
judging whether a test item corresponding to the test instruction exists in a preset memory or not;
if yes, acquiring a test item corresponding to the test instruction in the preset memory;
if not, generating a prompt signal so as to prompt a user to write test items corresponding to the test instructions in the preset memory.
In order to flexibly meet the test requirements of various users, in the application, the user can customize test instructions and test items, specifically, the user can select a plurality of test items in advance according to the test requirements, set the test standard of each test item, establish the corresponding relation between the test items and the test instructions after the setting is completed, and then store the test items and the corresponding relation into a preset memory. When in actual use, after receiving a user instruction, the corresponding relation of the user instruction is firstly determined in a preset memory, and then all test items corresponding to the user instruction are found out according to the corresponding relation. If all the test items corresponding to the user instruction are not found in the preset memory, the user instruction is not established in the corresponding relation with the test items, namely the user instruction is a new instruction or an empty instruction, and at the moment, the user can be prompted to establish the corresponding relation between the test items and the test instruction, so that the user can write the test items required to be tested into the preset memory, and establish the corresponding relation, and the subsequent use is convenient. Similarly, when the user does not need the user instruction any more, the corresponding relation and the corresponding test item stored in the preset memory can be deleted. Based on the above, the test requirements of various users can be flexibly met.
In some embodiments, sequentially sending each test task to the vehicle under test so as to obtain feedback data generated by the vehicle under test according to the test task, including:
respectively determining target equipment to be tested in the vehicle to be tested corresponding to each test task;
controlling a bipolar power supply connected with a power supply end of a vehicle to be tested to generate an output waveform required by one test task;
acquiring a feedback waveform generated by target equipment to be tested in a vehicle to be tested according to an output waveform;
taking the feedback waveform as feedback data;
and returning to the step of controlling the bipolar power supply connected with the power supply end of the vehicle to be tested to generate the output waveform required by one of the test tasks until the bipolar power supply generates the output waveforms required by all the test tasks.
When the vehicle to be tested is tested, the power supply of the vehicle to be tested can be controlled. Specifically, referring to fig. 2, fig. 2 is a schematic structural diagram of a fault testing device for a vehicle provided in the present application. In fig. 2, the industrial personal computer is used as an upper computer, and a user realizes various instruction operations on the industrial personal computer by operating a mouse and a keyboard; supplying power to various devices in the fault test device by a low-voltage power supply; the CAN (Controller Area Network, controller area network bus) communication and data acquisition are used for acquiring feedback data of the vehicle to be tested; the user can check the output waveform required by the test task through the oscilloscope, and check the feedback data and some waveform parameters required by the test task through the display; the output waveform required by the test task can be sent to the vehicle to be tested in two modes, one is that the industrial personal computer operates the fault simulator to generate the output waveform and send the output waveform to the vehicle to be tested, and the other is that the industrial personal computer operates the bipolar power supply to generate the output waveform and send the output waveform to the vehicle to be tested, and the mode can be specifically selected according to the actual requirement of a user.
Changing the output waveform of the bipolar power supply according to the test task, and changing the power supply state of a battery pack in the vehicle to be tested along with the change of the output waveform of the bipolar power supply, so that the states of various devices to be tested in the vehicle to be tested are changed along with the change of the output waveform of the bipolar power supply; during the test, the state, parameters and other data of the equipment to be tested required by the test task are obtained, and based on the state, parameters and other data, the feedback waveform of the equipment to be tested is constructed and is used as feedback data to be output to the upper computer. When the user judges the fault, the user can judge according to whether the feedback waveform accords with the normal working condition; in addition, the output waveform generated by the bipolar power supply can also be sent to the upper computer, so that a user can intuitively observe the relation between output and feedback.
In some embodiments, obtaining feedback data generated by a vehicle under test according to a test task includes:
acquiring a feedback message of the vehicle to be tested, which is received by a communication module;
and analyzing the feedback message based on the communication protocol of the communication module to obtain feedback data.
In the application, when testing is carried out, a large amount of data interaction exists between the vehicle with the vehicle and the testing equipment, and the accuracy of the data directly influences the result of fault testing, so that the data is ensured not to be abnormal due to interference, the adopted communication module is a CAN communication module, and the error correction mechanism in the two-wire serial communication adopted by the CAN communication is utilized to correct the data abnormality and error in the transmission process, so that the vehicle with the vehicle CAN work in a high noise environment, and the integrity and the accuracy of the data are ensured.
In addition, CAN communication has the characteristics of long transmission distance, low cost and high reliability, and CAN be well applied to fault test scenes of vehicles to be tested.
Because the DBC (Data Base Can) file is a file for describing Can communication, the DBC file includes protocol Data in a Can bus protocol and meanings represented by the Data, and also includes various message Data transmitted in Can communication, such as feedback message Data of a vehicle to be tested. After analyzing a feedback message obtained from a vehicle to be tested by the CAN communication module, firstly, information such as a name and an identifier of the vehicle to be tested in a CAN communication network CAN be found from a DBC file, then, a corresponding message frame is found from the DBC file according to the name and the identifier, and further, which data are contained in the message frame is determined; after the data is determined, the data is converted into a data format readable by the upper computer, and the data can be used as feedback data to be sent to the upper computer. In summary, feedback data CAN be obtained simply by CAN communication.
In some embodiments, the method for sending the test task and the feedback data to the upper computer includes:
constructing a data report containing test tasks and feedback data;
and sending the data report to an upper computer.
In order to facilitate the user to check, in the application, when the test task and the feedback data are sent to the upper computer, a data report can be constructed, various test parameters in the test task sent to the device to be tested at this time are written into the data report, various feedback data in the feedback data generated by the vehicle to be tested according to the test task can also be written into the data report, for example, the feedback data are written into an excel file, and then the excel file is sent to the upper computer so as to be checked by the user.
In addition, according to the user requirement, when the data report is constructed, various test parameters and feedback data of the same test task in the past test can be written into the data report. In combination with the above embodiment, after the output waveform and the feedback waveform are obtained, the waveform may also be written into the data report in the form of a picture, so as to be convenient for the user to view. In consideration of different requirements of different users on the patterns of the data report, templates of various data reports can be stored in advance, and according to the template selection of the user in the upper computer, the test tasks and the feedback data Xie Rui are sent to the corresponding templates so as to generate the data report of different patterns.
In some embodiments, further comprising:
when the external device is detected to be inserted, judging whether the device type information and the physical address information of the external device are stored in a preset memory;
if yes, configuring the external equipment according to the equipment type information and the physical address information;
if not, after receiving a user instruction containing equipment type information and physical address information, configuring the external equipment according to the user instruction.
In order to improve the flexibility of the test equipment, in the application, various external equipment such as storage equipment, display equipment, some external test equipment and the like can be freely connected according to the requirements of users. When external devices are accessed, users need to define the external devices, and the external devices can be normally used; considering that part of external equipment can be plugged and pulled out on the testing equipment for multiple times, if the external equipment is redefined when the testing equipment is plugged in each time, the user experience can be affected.
Based on the above, after the external equipment is accessed to the test equipment for the first time, the user sets the type of the external equipment in the hardware configuration interface of the test equipment, allocates a physical address for the external equipment, and stores the type of the external equipment and the physical address into the test equipment after the setting is completed; furthermore, in order to facilitate the subsequent use, the unique identifier of the external device may also be stored in the test device. When a certain external device is connected with the testing device, the testing device searches whether the device type information and the physical address information corresponding to the external device exist in a preset memory according to the unique identifier or the attribute parameter of the external device, if so, the external device is indicated to be connected with the testing device, at the moment, the device type information and the physical address information related to the external device are taken out from the preset memory to automatically configure the external device, and the external device can be normally used after configuration; if not, the external equipment is the first access test equipment, and a prompt signal can be sent out at the moment to prompt a user to set the type of the external equipment and allocate the physical address to the external equipment, and the external equipment is stored after allocation is finished, so that the user does not need to perform configuration when the external equipment is accessed next time. Based on this, the flexibility of the test apparatus can be improved.
In practical application, please refer to fig. 3 to 14, fig. 3 is a schematic diagram of a test task of the E01 test provided in the present application, fig. 4 is a schematic diagram of a test waveform of the E01 test provided in the present application, fig. 5 is a schematic diagram of a test task of the E02 test provided in the present application, fig. 6 is a schematic diagram of a test waveform of the E02 test provided in the present application, fig. 7 is a schematic diagram of a test task of the E03 test provided in the present application, fig. 8 is a schematic diagram of a device connection of the E03 test provided in the present application, fig. 9 is a schematic diagram of a device connection of the E10 test provided in the present application, fig. 10 is a schematic diagram of a test task of the E10 test provided in the present application, fig. 11 is a schematic diagram of a test waveform of the E10 test provided in the present application, fig. 12 is a schematic diagram of a test task of the E06 test provided in the present application, fig. 13 is a schematic diagram of a test waveform of the E06 test provided in the present application, and fig. 14 is a schematic diagram of a test task of the E19 test provided in the present application.
E01 test refers to basic detection of the electrical system of the vehicle, such as testing the operating state and parameters of components such as the vehicle battery, engine and generator; the E02 test refers to a functional test performed on an electronic control unit of the vehicle, such as detecting whether a communication function, a data processing function, a control function, and the like thereof are normal; the E03 test refers to testing the driving system of the vehicle, such as testing the behavior and performance of the automatic driving system under the condition of interference; e10 test refers to the overall reliability test of the vehicle, similar to the advanced version of E01 test; the E06 test refers to the test of noise and vibration of the vehicle, and mainly tests the influence of the noise and vibration in the vehicle on the experience of passengers; the E19 test refers to a test for air conditioning functions of a vehicle such as emissions, air conditioning performance, and ventilation performance.
In order to realize these items, firstly, different test items are required to be set for each test according to the test standard, such as test item tables of an E01 test, an E02 test, an E03 test, an E10 test, an E06 test and an E19 test in fig. 3, 5, 7, 10, 12 and 14, and after the tables are set, the tables are stored in an industrial personal computer; assuming that three test items E01, E02, and E03 are taken as one common test, it is also necessary to previously establish correspondence between the three test items E01, E02, and E03 and this user operation (execution of the common test). In practical application, when the user clicks (executes the common test) this option, it can determine that the test of this round needs to execute three test items E01, E02 and E03 according to the user operation, then take out the corresponding table, and control the bipolar power supply or fault simulator to generate the corresponding test waveform according to the parameters in the table, so as to complete the common test.
It should be noted that, when the external device is accessed, if the external device supports other types of test items, the user is also comfortable to set and store the test items supported by the external device in the industrial personal computer, so as to increase the number and types of the test items.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another vehicle fault testing device provided in the present application, including:
a memory 21 for storing a computer program;
a processor 22 for implementing the steps of the fault testing method of the vehicle as described above when executing the computer program.
For a detailed description of the fault testing device for a vehicle provided in the present application, please refer to an embodiment of the fault testing method for a vehicle, and the detailed description is omitted herein.
The application also provides a fault test system of the vehicle, which comprises an upper computer, an oscilloscope, a bipolar power supply and the fault test device of the vehicle;
the upper computer is respectively connected with the oscilloscope, the bipolar power supply and the fault testing device of the vehicle;
the fault testing device of the vehicle is respectively connected with the oscilloscope and the bipolar power supply.
For a detailed description of the fault test system of the vehicle provided in the present application, please refer to an embodiment of the fault test method of the vehicle, and the detailed description is omitted herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A failure test method of a vehicle, characterized by comprising:
after a test instruction is acquired, determining each test item corresponding to the test instruction;
determining a test standard corresponding to each test item according to the test instruction;
generating test tasks corresponding to the test items according to the test standards corresponding to the test items;
sequentially sending each test task to a vehicle to be tested so as to acquire feedback data generated by the vehicle to be tested according to the test tasks;
and sending the test standard, the test task and the feedback data corresponding to each test item to an upper computer.
2. The method for testing a fault of a vehicle according to claim 1, wherein determining each test item corresponding to the test instruction includes:
judging whether a test item corresponding to the test instruction exists in a preset memory or not;
if yes, acquiring a test item corresponding to the test instruction in the preset memory;
if not, generating a prompt signal so as to prompt a user to write the test item corresponding to the test instruction in the preset memory.
3. The method for testing the failure of the vehicle according to claim 1, wherein sequentially transmitting each of the test tasks to the vehicle under test so as to obtain feedback data generated by the vehicle under test according to the test tasks, comprises:
respectively determining target equipment to be tested in the vehicle to be tested corresponding to each test task;
controlling a bipolar power supply connected with a power supply end of the vehicle to be tested to generate an output waveform required by one of the test tasks;
acquiring a feedback waveform generated by target equipment to be tested in the vehicle to be tested according to the output waveform of the test item;
taking the feedback waveform as the feedback data;
and returning to the step of controlling the bipolar power supply connected with the power supply end of the vehicle to be tested to generate the output waveform required by one of the test tasks until the bipolar power supply generates all the output waveforms required by the test tasks.
4. The method for testing the failure of the vehicle according to claim 1, wherein obtaining feedback data generated by the vehicle under test according to the test task comprises:
acquiring a feedback message of the vehicle to be tested, which is received by a communication module;
and analyzing the feedback message based on the communication protocol of the communication module to obtain the feedback data.
5. The method of fault testing of a vehicle of claim 4, wherein the communication module is a CAN communication module.
6. The method for testing a fault of a vehicle according to claim 5, wherein analyzing the feedback message based on the communication protocol of the communication module to obtain the feedback data comprises:
and analyzing the feedback message based on a preset DBC file corresponding to the communication module to obtain the feedback data.
7. The method for testing a vehicle failure according to claim 1, wherein transmitting the test task and the feedback data to an upper computer includes:
constructing a data report containing the test task and the feedback data;
and sending the data report to the upper computer.
8. The failure test method of a vehicle according to any one of claims 1 to 7, characterized by further comprising:
when the insertion of the external equipment is detected, judging whether equipment type information and physical address information of the external equipment are stored in a preset memory or not;
if yes, configuring the external equipment according to the equipment type information and the physical address information;
if not, after receiving a user instruction containing the equipment type information and the physical address information, configuring the external equipment according to the user instruction.
9. A failure test apparatus for a vehicle, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the failure test method of a vehicle according to any one of claims 1 to 8 when executing the computer program.
10. A fault testing system of a vehicle, comprising a host computer, an oscilloscope and a bipolar power supply, and further comprising the fault testing device of the vehicle according to claim 9;
the upper computer is respectively connected with the oscilloscope, the bipolar power supply and the fault testing device of the vehicle;
the fault testing device of the vehicle is respectively connected with the oscilloscope and the bipolar power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311776501.4A CN117761431A (en) | 2023-12-21 | 2023-12-21 | Fault testing method, device and system for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311776501.4A CN117761431A (en) | 2023-12-21 | 2023-12-21 | Fault testing method, device and system for vehicle |
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| CN202311776501.4A Pending CN117761431A (en) | 2023-12-21 | 2023-12-21 | Fault testing method, device and system for vehicle |
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| Country | Link |
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| CN (1) | CN117761431A (en) |
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