CN116009457A - HIL test method for remote fault diagnosis function of vehicle - Google Patents
HIL test method for remote fault diagnosis function of vehicle Download PDFInfo
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Abstract
The scheme relates to a method for performing HIL test on a remote fault diagnosis function of a vehicle, so as to perform HIL test on the remote fault diagnosis function of the vehicle and verify the reliability and the robustness of the remote fault diagnosis function of the vehicle. It comprises the following steps: the simulation test analysis software of the upper computer creates a test project; compiling a peripheral controller simulation model of the built vehicle networking terminal TBox into a dynamic link library in the process of creating the test engineering, and loading the dynamic link library into the test engineering; when the test tool executes the test case, the test tool controls the HIL rack to simulate injection faults by calling a test project and generate fault information containing fault zone bits, and the vehicle networking terminal TBox actively uploads the fault information to the TSP server after receiving the fault information.
Description
Technical Field
The invention relates to the technical field of pure electric vehicles, in particular to a method for performing HIL test on a remote fault diagnosis function of a vehicle.
Background
The existing new energy vehicle-mounted diagnosis technology can primarily realize the new energy vehicle fault diagnosis function, and for users, the fault problem can not be solved in time, so that the customer experience and satisfaction can be seriously affected. In the current new energy automobile technology, aiming at the fact that a new energy automobile already has primary remote fault diagnosis, the principle of a remote diagnosis system is as follows: the detection recorder in the electric automobile detects whether the vehicle has a fault, records various physical and electrical information when the fault of the vehicle appears or disappears, uploads corresponding fault information to the server by the vehicle, and the server automatically generates a fault log according to the uploaded fault information and prompts corresponding management personnel. The current remote fault diagnosis technology has the defects of incomplete diagnosis, untimely treatment and the like, and can not effectively solve various fault problems of new energy automobile outbreaks in real time, so that a method capable of comprehensively carrying out fault diagnosis verification on a remote fault diagnosis system is needed to be provided; in the prior art, there is more scheme that utilizes the HIL test to electric automobile's single controller, like providing a BMS controller testing arrangement in CN217060834U, this scheme includes host computer, bus development instrument, await measuring controller, VT system and multichannel bleeder box, wherein: the upper computer is connected with the VT system through a network, the bus development tool is connected with the upper computer through a data line and is connected with the controller to be tested through a connecting channel, the VT system is connected with the controller to be tested in a bidirectional way through a wire harness, the input end of the multi-path voltage division box is connected with the VT system, the output end of the multi-path voltage division box is connected with the vector I/O port of the bus development tool, the scheme does not depend on the integration technology of various electric component driving software any more, a large number of I/O ports are not required to be built, a simulation environment is built through the bus development tool and the VT system, the technical threshold is low, the time consumption is short, the cost is low, test data can be analyzed online or offline, and real-time and synchronous high-frequency sampling to be measured of all analog output quantities and BMS is realized through the multi-path voltage division box. The current scheme mainly aims at a single controller to execute the HIL test, but the HIL test cannot be carried out on the remote fault diagnosis function of the vehicle, and the reliability and the robustness of the remote fault diagnosis function cannot be verified.
Disclosure of Invention
The invention aims to provide a method for performing HIL test on a remote fault diagnosis function of a vehicle, so as to perform HIL test on the remote fault diagnosis function of the vehicle and verify the reliability and the robustness of the remote fault diagnosis function of the vehicle.
The technical scheme of the invention is as follows:
the invention provides a method for performing HIL test on a remote fault diagnosis function of a vehicle, which comprises the following steps:
the method comprises the steps that simulation test analysis software (CANoe software) of an upper computer creates a test project; compiling a peripheral controller simulation model of the built vehicle networking terminal TBox into a dynamic link library in the process of creating the test engineering, and loading the dynamic link library into the CANOE test engineering;
the test cases are imported into a test tool of the upper computer, the test tool controls the HIL rack to simulate injection faults by calling CANOE test engineering and generates fault information containing fault marker bits, and the vehicle networking terminal TBox actively uploads the fault information to the TSP server after receiving the fault information.
Preferably, in the step of simulating the injection fault by using the loaded peripheral controller simulation model and generating fault information including the fault zone bit, each peripheral controller simulation model of the internet of vehicles terminal TBox is respectively allocated with a single dedicated fault message, and the dedicated fault message includes two fault codes and fault states thereof; each peripheral controller simulation model, when performing self-fault simulation injection,
if the number of faults to be uploaded by the peripheral controller simulation model is 0, filling 4 bytes of a first fault code DTC1 and 4 bytes of a second fault code DTC2 in a fault frame data field with 0x 0;
if the number of faults to be uploaded by the peripheral controller simulation model is only 1, only 4 bytes of a first fault code DTC1 are used in a fault frame data field, and 4 bytes of a second fault code DTC2 are filled with 0x 0;
if the number of faults to be uploaded by the peripheral controller simulation model is 2, using 4 bytes of a first fault code DTC1 and 4 bytes of a second fault code DTC2 in a fault frame data field;
if the number of faults to be uploaded by the peripheral controller simulation model is more than 2, the remaining faults are sent in the following period according to the following rules:
1) Sequentially sending fault codes and fault states of the faults according to the sequence of the faults;
2) If a plurality of faults occur simultaneously, the peripheral controller simulation model randomly defines the uploading sequence of the faults;
3) And in the process of queuing and uploading faults, if new faults are generated, uploading the newly generated faults after the previous faults are uploaded.
Preferably, the modeling simulation model in the upper computer is a Matlab/Simulink model.
Preferably, the simulation test analysis software in the upper computer is CANOE software.
Preferably, the peripheral controller of the car networking terminal TBox at least comprises BMS, PDU and TMS.
Preferably, the HIL rack sends the generated fault information to the internet of vehicles terminal TBox in the form of a CAN message.
Preferably, the method further comprises:
the TSP server generates a fault log based on the received fault information and prompts a manager to conduct fault log processing.
Preferably, the method further comprises:
and the vehicle networking terminal TBox extracts all fault data associated with the fault information and stores the fault data locally.
Preferably, the method further comprises:
and when a fault data uploading instruction sent by the web side of the TSP server is received, uploading the locally stored relevant fault data to the TSP server by the vehicle networking terminal TBox.
Preferably, the test cases are imported into the test tool of the upper computer in the following manner:
manually writing test cases in a test tool of the upper computer; or (b)
And writing a test case in Excel, converting the test case into a test sequence of a test tool by using a Python script, and then introducing the test sequence into the test tool of the upper computer.
The beneficial effects of the invention are as follows:
the HIL rack simulating each controller of the whole vehicle is connected with the TBox of the vehicle networking terminal through a CAN bus, the peripheral test environment built by Matlab/Simulink and CANOE is used for simulating the fault self-diagnosis process of each controller, when the controllers diagnose the faults of the controllers, fault information containing fault zone bits is sent to the TBox of the vehicle networking terminal in a CAN message form, and the TBox of the vehicle networking terminal actively uploads the fault information to the TSP server after receiving the fault information, so that HIL test of the fault diagnosis function of each controller of the whole vehicle is realized, and reliability and robustness of the remote fault diagnosis function of the vehicle are verified.
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The foregoing and/or accessory aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic diagram of a network design of an HIL test system of a TBox of a vehicle networking terminal;
FIG. 2 is a schematic flow chart of a controller simulating injection of a self-fault;
fig. 3 is a schematic diagram of a Simulink model in which the BCU controller simulates injection of self-failure.
Detailed Description
Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The embodiment provides a method for performing HIL test on a remote fault diagnosis function of a vehicle, which relates to a HIL test system of a vehicle networking terminal TBox (vehicle networking terminal) based on a test tool, matlab/Simulink and CANOE, wherein the HIL test system simulates various controllers (including but not limited to controllers including BCU (battery Control Unit, battery control unit), PDU (Power Distribution Unit, high-voltage distribution BOX)), TMS (Thermal Management System )) of the vehicle, is connected with the vehicle networking terminal TBox through a CAN bus, simulates the fault self-diagnosis process of each controller through the peripheral test environments established by Matlab/Simulink and CANOE, and transmits fault information containing fault sign bits to the vehicle networking terminal TBox in a CAN message mode when the controllers diagnose own faults, the vehicle networking terminal TBox actively uploads the fault information to a TSP server after receiving the fault information, the TSP server automatically generates a fault log, prompts corresponding management personnel to process the fault information, and simultaneously transmits fault data to the TSP server through the TSP server when the corresponding to the TSP server and the TSP server receives the fault data from the Web terminal and the TSP server to analyze the fault data.
The method in this embodiment specifically includes: the method comprises the steps that simulation test analysis software (CANoe software) of an upper computer creates a test project; compiling a peripheral controller simulation model of the built vehicle networking terminal TBox into a dynamic link library in the process of creating the test engineering, and loading the dynamic link library into the CANOE test engineering;
the test cases are imported into a test tool of the upper computer, the test tool of the upper computer controls the HIL rack to simulate injection faults by calling CANOE test engineering and generates fault information containing fault zone bits, and the vehicle networking terminal TBox actively uploads the fault information to the TSP server after receiving the fault information. The mobile network is adopted between the TSP server and the vehicle networking terminal TBox for information interaction, the mobile network is adopted between the TSP server and the mobile phone APP for information interaction, and the Ethernet is adopted between the Web end of the TSP server and the TSP server for communication.
When the HIL rack simulates self fault simulation injection of each controller, the following requirements are met:
1) Each controller is assigned a dedicated fault message, which is a standard frame, with a period of T, containing two fault codes and their fault states (specifically DTC1 and DTC1Status, DTC2 and DTC2 Status). If the fault appears or disappears, the fault frame containing the fault code and the state thereof is only sent once, and the fault frame is not repeatedly sent, namely when no new fault code is generated and the fault state of the existing fault code is unchanged, 4 bytes of the DTC1 and 4 bytes of the DTC2 in the data field of the fault frame are filled with 0x 0.
2) If the controller only has one fault code and the state thereof needs to be uploaded, only 4 bytes of DTC1 are used in the data field of the fault frame, and 4 bytes of DTC2 are filled with 0x 0; if the number of the fault codes to be sent by the controller is greater than 2, the remaining fault codes and the states thereof are sent in the following period according to the following rules:
(1) sequentially sending fault codes and states of faults according to the sequence of faults;
(2) if a plurality of faults happen simultaneously, the controller automatically defines an uploading sequence;
(3) if new faults are generated in the process of queuing and uploading faults, the newly generated faults can be uploaded after the previous faults are uploaded.
As shown in fig. 2, according to the flow of injecting self faults into the controllers, a Simulink model of simulating the injected faults by each controller is built.
Referring to fig. 3, a BCU controller is taken as an example to construct a Simulink model for simulating injection faults, and the system comprises two independent subsystems DTC1 and DCT2.
If the number of the fault codes to be sent by the controller is less than or equal to 2, the DTC1 subsystem and the DCT2 subsystem can independently finish the fault occurrence or disappearance, and only once the fault frame containing the fault codes and the state thereof is sent, and the repeated sending is not carried out.
If the number of fault codes to be sent by the controller is greater than 2, the DTC1 subsystem and the DCT2 subsystem are mutually matched to realize:
(1) sequentially sending fault codes and states of faults according to the sequence of faults;
(2) if a plurality of faults happen simultaneously, the controller randomly defines an uploading sequence by itself;
(3) if new faults are generated in the process of queuing and uploading faults, the newly generated faults can be uploaded after the previous faults are uploaded.
The Simulink model is compiled into a dynamic link library (. Dll.) and this dynamic link library is loaded into the CANOE test project.
And the CANOE test engineering is controlled by using the test tool, so that HIL automatic test of remote diagnosis is realized.
In this embodiment, a method for automatically importing test cases identifiable by a test tool to perform an automated test is provided, where the fault state of hexadecimal in a questionnaire of a diagnosis questionnaire and the fault state thereof are converted into a decimal fault code containing the fault state, and the importing method includes, but is not limited to, the following ways:
(1) manually writing test cases in a test tool; (2) test cases were written in Excel and then converted into test tool test sequences using Python scripts.
In this embodiment, after the test tool executes the test case for remote diagnosis, the fault data is derived from the Web end of the TSP server.
In this embodiment, data analysis software such as a CANalyzer is used to play back and analyze fault data.
The above embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention.
Claims (10)
1. A method of performing a HIL test for a remote fault diagnosis function of a vehicle, comprising:
establishing a peripheral controller simulation model and a peripheral simulation test environment of a TBox of the networking terminal of the vehicle by using a modeling simulation model of an upper computer, and loading the peripheral controller simulation model and the peripheral simulation test environment into an HIL rack;
the simulation test analysis software of the upper computer creates a test project; compiling a peripheral controller simulation model of the built vehicle networking terminal TBox into a dynamic link library in the process of creating the test engineering, and loading the dynamic link library into the test engineering;
the test cases are imported into a test tool of the upper computer, the test tool of the upper computer controls the HIL rack to simulate injection faults by calling a test project and generate fault information containing fault zone bits, and the vehicle networking terminal TBox actively uploads the fault information to the TSP server after receiving the fault information.
2. The method for performing an HIL test on a remote fault diagnosis function of a vehicle according to claim 1, wherein in the step of simulating an injection fault by using a loaded peripheral controller simulation model and generating fault information including a fault flag bit, each peripheral controller simulation model of a vehicle networking terminal TBox is respectively allocated with a single dedicated fault message, and the dedicated fault message includes two fault codes and fault states thereof; each peripheral controller simulation model, when performing self-fault simulation injection,
if the number of faults to be uploaded by the peripheral controller simulation model is 0, filling 4 bytes of a first fault code DTC1 and 4 bytes of a second fault code DTC2 in a fault frame data field with 0x 0;
if the number of faults to be uploaded by the peripheral controller simulation model is only 1, only 4 bytes of a first fault code DTC1 are used in a fault frame data field, and 4 bytes of a second fault code DTC2 are filled with 0x 0;
if the number of faults to be uploaded by the peripheral controller simulation model is 2, using 4 bytes of a first fault code DTC1 and 4 bytes of a second fault code DTC2 in a fault frame data field;
if the number of faults to be uploaded by the peripheral controller simulation model is more than 2, the remaining faults are sent in the following period according to the following rules:
1) Sequentially sending fault codes and fault states of the faults according to the sequence of the faults;
2) If a plurality of faults occur simultaneously, the peripheral controller simulation model randomly defines the uploading sequence of the faults;
3) And in the process of queuing and uploading faults, if new faults are generated, uploading the newly generated faults after the previous faults are uploaded.
3. The method for performing HIL test on a remote fault diagnosis function of a vehicle according to claim 1, wherein the modeling simulation model in the upper computer is a Matlab/Simulink model.
4. The method for performing a HIL test for a remote fault diagnosis function of a vehicle according to claim 1, wherein the simulation test analysis software in the host computer is CANoe software.
5. The method for performing HIL testing on a remote fault diagnosis function of a vehicle according to claim 1, wherein the peripheral controller of the internet of vehicles terminal TBox comprises at least BMS, PDU and TMS.
6. The method for performing an HIL test on a remote fault diagnosis function of a vehicle according to claim 1, wherein the HIL rack transmits the generated fault information to a vehicle networking terminal TBox in a CAN message form.
7. The method of HIL testing a remote fault diagnosis function of a vehicle according to claim 1, further comprising:
the TSP server generates a fault log based on the received fault information and prompts a manager to conduct fault log processing.
8. The method of HIL testing a remote fault diagnosis function of a vehicle according to claim 1, further comprising:
and the vehicle networking terminal TBox extracts all fault data associated with the fault information and stores the fault data locally.
9. The method of HIL testing a remote fault diagnosis function of a vehicle according to claim 8, further comprising:
and when a fault data uploading instruction sent by the web side of the TSP server is received, uploading the locally stored relevant fault data to the TSP server by the vehicle networking terminal TBox.
10. The method for performing a HIL test on a remote fault diagnosis function of a vehicle according to claim 1, wherein the test cases are imported into a test tool of a host computer in the following manner:
manually writing test cases in a test tool of the upper computer; or (b)
And writing a test case in Excel, converting the test case into a test sequence of a test tool by using a Python script, and then introducing the test sequence into the test tool of the upper computer.
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