介绍了CAN总线的介质访问方法与技术特点,分析了CAN总线在数字继电保护系统中的应用可行性和所传送数据流的性质,给出了DSP的McBSP(多通道缓冲串行接口)与CAN控制器接口的硬件配置方案和软件设计流程。关键词:CAN总线;数字继电保护;多通道缓冲串行接口Abstract: The media access method and technological characteristic of CANBUS is introduced, the application feasibility and the character of dataflow of CANBUS in the digital relay protection is also analyzed, the hardware and software design scheme of the interface between McBSP(DSP) and CAN controller is provided.Keywords: CANBUS; digital relay protection; McBSP
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