Generating method of hardware-in-the-loop test case for software function verification of engine electronic control unit

Abstract

The invention discloses an engine electronic control unit software function verification hardware-in-loop test case generation method, comprising: aimed at recording files generated by different calibration tools in experiment data, selecting a data extraction tool, according to different test requirements, extracting effective data and defining the data as original data; according to an automatic testing tool, performing format conversion on the original data; importing the original data which is converted in format into the automatic testing tool; starting a hardware-in-loop test system automated test; recording current experimental data to generate an experiment report; analyzing experiment results, eliminating influence of a hardware-in-loop rack on functional test or problem reproduction; comparing the current recorded experimental data with the original data; and positioning reasons why problems occur. The engine electronic control unit software function verification hardware-in-loop test method can completely reproduce testing environment, reduces design limitation caused by man-made subjectivity, and shortens software test period.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method for generating hardware-in-the-loop test cases for software function verification of an engine electronic control unit. Background technique [0002] In order to improve the economy, stability and emission of contemporary automobile engines, it is imperative to adopt advanced electronic control units. During the software development process of the engine electronic control unit, it is essential to verify the software function of the electronic control unit on the engine hardware-in-the-loop bench, so the design of the test case and its design quality directly become the decisive factors affecting the subsequent control function verification. [0003] The hardware-in-the-loop bench test experiment is mainly used for two purposes: [0004] 1) Fully verify the software functions of the engine electronic control unit; [0005] 2) Reproduce the problem of the software defect that...

AI Technical Summary

Problems solved by technology

A major disadvantage of this existing method is that it requires extremely high levels of test case design for engineers, and manual testing is difficult to achieve consistency and 100% test coverage

[0007] When a software defect is found by accident during the road test, the usual method is to analyze the data, and then reproduce the phenomenon in the same environment to locate the cause of the problem, and then solve the problem; but it is often difficult to completely reproduce the problem, the reason The problem is that this problem occurs under accidental conditions, and the driving habits of each driver are different, making it difficult for engineers to quickly manufacture the same working conditions under the existing experimental conditions to achieve reproduction

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