基于CAN-FD总线的数据传输和同步处理机制的研究

Study on Data Transmission and Synchronous Processing Mechanism Based on CAN-FD bus

电力系统继电保护装置常使用实时总线实现装置内部各节点间的互联通信,常见的实时总线有SPI、IIC、SDIO等。实时总线通信系统一般采用主从结构,受抗干扰和负载能力影响,扩展能力有限且影响传输可靠性。为此提出一种基于CAN-FD总线的数据传输和同步处理机制,利用CAN-FD总线结构简单、传输速率高、可靠性高的特点,实现装置各节点间数据实时互联通信。

Power system protective relays commonly use real-time bus to achieve interconnection and communication between various internal nodes.Currently prevailing types of real-time bus include SPI,IIC and SDIO.Conventional real-time bus communication systems adopt a superordinate-subordinate structure,which is affected by anti-interference and load capacity,and has limited scalability and susceptible transmission reliability.In view of this the present work proposes a CAN-FD bus-based data transmission and synchronous processing mechanism,which utilizes simple structure,fast transmission,and high reliability of CAN-FD bus to achieve real-time inter-node connection and data communication.