基于节点冗余的CAN总线网络双冗余方法  

Double Redundancy Method of CAN-bus Network Based on Node Redundancy

作　　者：王红亮[1] 田帅帅[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室电子测试技术国家重点实验室,山西太原030051

出　　处：《探测与控制学报》2010年第4期90-94,共5页Journal of Detection & Control

基　　金：国家自然科学基金项目资助(60871041)

摘　　要：目前在CAN总线冗余设计方法中只对总线进行冗余设计,仍然不能满足恶劣工业环境对CAN总线可靠性的要求。针对这一问题,提出了一种基于节点冗余的CAN总线网络双冗余方法。该方法对网络中每个节点进行总线冗余,同时为系统的主节点进行节点冗余。测试结果表明:若总线出现故障,系统中所有节点均能自动切换到备用总线工作;若主节点出现故障,备份主节点则自启动,发挥主节点的作用;当主节点恢复正常时,备份主节点则自行回到备份状态。此方法能同时实现节点冗余和总线冗余,大大提高了系统的可靠性。The recent redundant design for CAN-bus cannot meet the requirement of reliability in extremely industrial environment.In view of this problem,a double redundant method of CAN-bus network based on nodes redundancy was proposed.This method made bus redundancy for each node in the network,and made node redundancy for main node of the system.The test result indicateed that：if there was something wrong with the current bus,all the nodes of the network could switch to standby bus automatically,if the main node broke down,the standby main node can automaticly start up and played the action of main node,when main node got right,the standby main node could automaticly come back to the state of spare.This method can achieve node redundancy and bus redundancy at same time,and the reliability of the system is elevated greatly.

关 键 词：CAN总线 节点冗余 总线冗余 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]