TAILIEUCHUNG - Research on automotive UDS diagnostic protocol stack test system

This article presents the test methods of UDS (Unified Diagnostic Services) diagnostic protocol stack in vehicles, which includes two parts. One is the unit test of the main functions in network layer, another one is the functional test of the network and application layer. Corresponding test environments based on software and hardware are designed. | Journal of Automation and Control Engineering Vol. 4, No. 5, October 2016 Research on Automotive UDS Diagnostic Protocol Stack Test System Jinghua Yu and Feng Luo Clean Energy Automotive Engineering Center, School of Automotive Studies, Tongji University, Shanghai, China Email: thh1990@, luo_feng@ However, all these methods above can only be used after the whole stack is done. They cannot be implemented for a separated part of an UDS stack in a particular developing phase and not suitable for the stack under developing to check every step, which is essential to the development. Besides, the professional test tool for UDS is very expensive and the simple tester made by software like LabVIEW is not systematic. Therefore this article is going to introduce a method, which can make up for the defects above. It is systematic, flexible and costeffective, which does not relay on a particle expensive tool. Abstract—This article presents the test methods of UDS (Unified Diagnostic Services) diagnostic protocol stack in vehicles, which includes two parts. One is the unit test of the main functions in network layer, another one is the functional test of the network and application layer. Corresponding test environments based on software and hardware are designed. Test cases are created according to international standard. All these tests ensure the efficiency of the development and the accuracy and standard of target protocol stack. Finally the designed test system is verified correctly. Index Terms—UDS, diagnostic protocol stack, unit test, functional test II. I. The object of this test is the UDS Diagnostic Protocol Stack Based on CAN bus. According to corresponding international standards, the whole stack is divided into three layers in this article. Fig. 1 shows the structure of the diagnostic protocol stack. INTRODUCTION Diagnostic system in vehicles is a monitor system, which supervises the running statuses of all the important components and

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• Journal of Automation and Control Engineering
• Research on automotive UDS diagnostic protocol stack test system
• Automotive UDS diagnostic protocol stack test system
• Target protocol stack
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