CAN总线测试自动化研究

Automated testing research about CAN network

随着汽车产业的快速发展,汽车电子设备不断增加,汽车内部综合控制系统更加复杂,传统的点对点控制已经远远不能满足要求,CAN总线以其本身的高性能,受到汽车行业的广泛应用。因为CAN总线的重要性,针对CAN总线的测试也广泛开展开来。CAN总线测试一般分为物理层测试、通信层测、数据链路层测试、网络管理测试、诊断测试共计1000多项;测试工作量大且繁杂。当遇到整车的电控单元数量多,总线结构复杂时;测试工作量将成倍增加,手动测试基本上无法满足这种测试需求。针对不同的电控单元,CAN总线测试在测试方法和评价标准都是一致的,这样就可以实现总线测试的平台化。本文是基于CAN总线测试平台化的基础,实现CAN总线测试自动化方面的一篇研究。

Automobile electronic device is increasing with automobile industry developing fast,control system of the automobile is complex,traditional point —to—point control model can＇t satisfy requirement,CAN BUS is applying extensively with excellent performance.Because CAN BUS is very important,so it is necessary to test it.It is about one thousand terms to test CAN BUS,what contains physical layer test、data link layer test and application layer test.But when automobile has many ECU and the structure of CAN BUS is complex;the number of test term will be more times than it has be.Fortunately different of ECU have the same method and standard of test CAN BUS,so we can make test generalization.This paper is about make CAN BUS test automatic come true base on test generalization.