Method, device and system for testing ECU (Electronic Control Unit)

A test method and real-time test technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as heavy workload and difficulty in obtaining HIL test results

Active Publication Date: 2013-04-03
BEIJING JINGWEI HIRAIN TECH CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a testing method and device for an ECU, aiming at solving the problem that testers have a large workload when performing HIL testing and are difficult to obtain the results of HIL testing

Method used

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  • Method, device and system for testing ECU (Electronic Control Unit)
  • Method, device and system for testing ECU (Electronic Control Unit)
  • Method, device and system for testing ECU (Electronic Control Unit)

Examples

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no. 1 example

[0051] like figure 1Shown, the present invention discloses a kind of first embodiment of the test method of ECU, and described test method is used for HIL test equipment, comprises the following steps:

[0052] Step S101: Create a simulation ECU by using the simulation software development method of the requirement document;

[0053] Obtain the input conditions and output requirements documents of real ECUs through ECU suppliers or ECU developers, combine the input conditions and output conditions in the requirements documents with calculation formulas, and use model software (such as Matlab-Simulink, maple, maplesim) to develop real The simulation ECU of ECU input and output conditions, the simulation ECU is to simulate the input conditions and output results of the demand document and the artificial calculation process through the program.

[0054] When the ECU is working, it receives the test environment input from the outside, and finds the input conditions corresponding ...

no. 2 example

[0067] like figure 2 Shown, be the second embodiment of the testing method of ECU of the present invention, comprise the following steps:

[0068] Step S201: Create a simulation ECU by using the simulation software development method of the requirement document;

[0069] Step S202: Judging whether the ECU to be tested forms a closed loop with other control devices, if so, proceed to step S203, if not, execute other procedures.

[0070] The tester judges whether the ECU to be tested forms a closed loop with other control equipment, that is, judges that the ECU to be tested forms a closed loop with the HIL test equipment or other ECUs, and the judging method is: judging whether the output signal of the ECU to be tested is fed back to the HIL test equipment Or directly feed back to other control equipment ECU, and directly or indirectly affect the output signal of the ECU to be tested. If the output of the ECU to be tested has feedback and affects its own output signal, it mean...

no. 3 example

[0086] like Figure 7 Shown, be the 3rd embodiment of the testing method of ECU of the present invention, comprise the following steps:

[0087] Step S701: Create a simulation ECU by using the simulation software development method of the requirement document;

[0088] Step S702: judging whether the ECU to be tested forms a closed loop with other control devices, if not, proceed to step S703, and if so, execute other programs;

[0089] In the present invention, when the ECU to be tested and other control devices do not form a closed loop, the ECU to be tested and the ECU to be tested can be placed in the same test process for testing, and the ECU to be tested and the simulated ECU can be placed in different test processes for testing. Test, because the ECU to be tested and other control equipment do not form a closed loop, so no other interference data will be generated during the test, so that there will be no adverse consequences such as failure of the HIL test equipment or...

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Abstract

The invention discloses a method for testing a to-be-tested ECU, which is used for HIL (Hardware In the Loop) testing equipment. The invention further provides a device for testing the ECU and a system for testing the ECU. A tester integrates a large amount of analytical calculation processes carried out on requirement documents into a simulated ECU through adopting a simulation software method, signals for simulating the same testing environment are input to the simulated ECU and to-be-tested ECU to obtain real-time testing data output by the to-be-tested ECU and the simulated ECU, and real-time testing data output by the to-be-tested ECU and the simulated ECU is compared to obtain the final comparison result. The tester is prevented from carrying out a large amount of analytical calculations on data from the input condition to the requirement result in the requirement documents, and the problems that the workload in HIL test of the tester is large and of the HIL test result is difficult to obtain are solved.

Description

technical field [0001] The invention relates to the embedded field, in particular to an ECU testing method, device and system. Background technique [0002] With the advancement of science and technology, more and more functions that meet human needs have been added to the electronic control unit ECU (Electronic Control Unit). In order to ensure the feasibility and safety of various functions in the ECU, ECU is installed into the equipment A functional test of the ECU is required before. [0003] At present, the hardware in the loop (Hardware In the Loop, HIL) test is mainly used to test the function of the ECU in combination with the requirements document. HIL test is a semi-physical simulation technology, that is, the real ECU and the virtual controller environment are used in the HIL test. The virtual controller environment is mainly realized through simulation. In the real environment, the output signal analyzed and processed by the ECU is sent back to the main control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张大鹏薛俊亮
Owner BEIJING JINGWEI HIRAIN TECH CO INC
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