车用CAN总线系统物理层测试台架的设计

The design of physical layer test bench for vehicle CAN bus system

为了检验CAN总线系统特征参数,分析了长度与位传输速率的对应关系,并研究了位速率与总线最大长度之间的对应关系,介绍了车用CAN总线系统物理层台架的设计过程,对台架CAN跳变沿斜率信号进行了测试,试验结果表明CAN总线系统物理层符合设计要求。

In order to test the characteristics of CAN bus system.Analyzed the corresponding relationship between length and transmission rate of the bit,between bit rate and the maximum length of bus,and introduced the design process of physical layer test bench for vehicle CAN bus system.Hopping along the slope of CAN signals was tested,the results showed that the physical layer CAN bus system meet the design requirements.