| 摘 要: 故障诊断系统是汽车上各类控制器的重要组成部分,本文基于ISO 14229(UDS-统一诊断服务)和ISO 15765(DoCAN)两种协议设计了一套基于CAN(Controller Area Network,控制器局域网络)总线的故障诊断系统。主 芯片为XC2785的发动机ECU作为试验平台,并开发与之配合使用的上位机,最后进行测试,结果表明,可以实现CAN报 文的发送及接收,诊断符合UDS的诊断流程,上位机操作简单,可以快速读取故障码,以及清除故障码,满足设计需求。 |
| 关键词: UDS;故障诊断;CAN;上位机 |
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中图分类号: TP520.40
文献标识码: A
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| Design and Implementation of Vehicle Controller Fault Diagnosis |
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ZHAO Lichao, WU Changshui
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( College of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China)
64061044@qq.com; wuchangshui@sues.edu.cn
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| Abstract: Fault diagnosis system is an important part of all kinds of controllers in automobile. This paper designs a fault diagnosis system based on CAN (Controller Area Network) communication, on the basis of ISO 14229 (UDS-Uni ed Diagnosis Service) and ISO 15765 (DoCAN). The main chip, the XC2785 engine ECU, is used as the test platform, and the upper computer is developed to use with it. The test results show that CAN message can be sent and received, the diagnosis is in line with the UDS diagnosis process, the upper computer is simple to operate, and the fault code can be quickly read and cleared, so as to meet the designing requirement. |
| Keywords: UDS; fault diagnosis; CAN; upper computer |
