Commercial vehicle OBD diagnostic device network automation test system and method thereof

Abstract

The invention provides a commercial vehicle OBD diagnostic device network automation test system which comprises a main control device, a power supply control device, a CAN communication device and a tested OBD diagnostic device. The main control device selects a corresponding test script based on a diagnostic request sent by the tested OBD diagnostic device to call the power supply control device to power the tested OBD diagnostic device, and calls the CAN communication device to send a corresponding CAN diagnostic response message to the tested OBD diagnostic device. The tested OBD diagnostic device receives the diagnostic response message sent by the CAN communication device and generates diagnostic result data. The invention further provides a commercial vehicle OBD diagnostic device network automation test method. According to the invention, the system can automatically test the tested OBD diagnostic device in a simulation ECU environment at the initial stage of vehicle development, is independent of a real ECU environment, and can automatically execute test cases and result judgment; manual test errors are avoided; and the test efficiency and accuracy are improved.

Description

Technical field [0001] The invention relates to an automatic test system and a method thereof, in particular to a network automatic test system and a method of a commercial vehicle OBD diagnostic equipment. Background technique [0002] With the continuous development of automotive electronics technology, more and more electronic control units (ECUs) are deployed on commercial vehicles. ECUs cooperate with each other through CAN bus communication to form a complex functional architecture and network topology to achieve increasing functional configurations. At the same time, it also leads to ECUs containing more failures, functional configurations and inspection items. At present, commercial vehicles are equipped with an on-board diagnostic system (OBD). The diagnostic equipment communicates with each ECU through the OBD diagnostic interface, which is used to realize the functions of vehicle fault reading, parameter configuration, program update and vehicle self-test, which is con...

AI Technical Summary

Problems solved by technology

This test method has the following problems: it depends on the development progress of the ECU and the whole vehicle, and the intervention time is relatively late; in the real ECU environment, some fault codes and vehicle data are difficult to manufacture and cannot cover the forward test; in the real ECU environment, it cannot be covered Reverse testing such as negative response and abnormal response; manual verification method is inefficient and cannot guarantee high precision and reliability requirements

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