An automatic test method and test device for the diagnosis function of a vehicle controller

Abstract

The invention provides an automatic testing method and testing device of a diagnostic function of a vehicle controller. The automatic testing method comprises a step of obtaining a test case, a step of analyzing the test case and generating an analysis result, and a step of performing the test case according to the analysis result and generating a test report. According to the automatic testing method and the testing device, based on a hardware in-the-loop bench, a test can be completed by using a CAN transceiver and an upper computer, and other hardware resources are not occupied. The unifiedtest of UDS functionality and protocol layer are realized, and it is not necessary to use a diagnostic instrument and a CAN bus development tool respectively. Compared with a UDS test by a traditional diagnostic instrument, the method has the advantages that the test time is shorter, the degree of coverage is higher than that of a manual test, the test of secure access can be realized, a lot of test times and manpower cost are saved, and the coverage, repeatability and traceability of the UDS test are ensured.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automatic testing method and testing device for the diagnosis function of a vehicle controller. Background technique [0002] At present, the diagnostic test of Unified diagnostic services (UDS) for vehicle controllers is mainly divided into two aspects: diagnostic protocol layer test and diagnostic functional test. The functional test of UDS can generally be carried out with a diagnostic instrument. Such as a configurable and expandable vehicle diagnostic system and diagnostic method introduced by the invention number CN105302113A, but it needs to be tested in a real vehicle environment, and automatic testing cannot be realized, which limits the scope of application of the method and increases The manpower cost of diagnostic function test is reduced; The diagnostic protocol layer test of UDS is generally carried out using the Controller Area Network (Controller Area Network, referr...

AI Technical Summary

Problems solved by technology

[0002] At present, the diagnostic test of Unified diagnostic services (UDS) for vehicle controllers is mainly divided into two aspects: diagnostic protocol layer test and diagnostic functional test. The functional test of UDS can generally be carried out with a diagnostic instrument. Such as a configurable and expandable vehicle diagnostic system and diagnostic method introduced by the invention number CN105302113A, but it needs to be tested in a real vehicle environment, and automatic testing cannot be realized, which limits the scope of application of the method and increases The manpower cost of diagnostic function test is reduced; The diagnostic protocol layer test of UDS is generally carried out using the Controller Area Network (Controller Area Network, referred to as CAN) bus development tool, such as two kinds of vehicle diagnostic test systems described in the invention number CN101916087A and CN105292023A , although the automatic test can be realized, it can only test the UDS diagnostic service command, and cannot test the correctness of the UDS diagnostic function

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