计算机联锁系统CAN总线故障-安全通信研究  

Research on CAN Bus Fail-Safe Communication of Computer-Based Interlocking System

作　　者：马骉[1] 王海峰[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《北京交通大学学报》2008年第2期104-108,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：北京市科技计划项目资助(D0604003040811)

摘　　要：基于CAN总线技术在联锁系统中的应用,研究了故障-安全通信实现方法.通过分析计算机联锁系统对通信网络的安全需求,得出故障-安全通信的充要条件是传输链路的生存性、信息传输的完整性、实时性和可测性;给出了一种基于容错拓扑结构和报文差错控制编码的CAN总线故障-安全通信解决方案.经过功能测试和理论计算,该方案满足故障-安全的设计原则,传输性能达到了计算机联锁系统的要求.Based on the application of CAN bus technology in the computer-based interlocking system, this paper researches how to realize fail-safe communication. This paper analyzes the safety require- ments of the communication network that the computer-interlocking system need, educes that the sufficient and necessary condition of fail-safe communication is transmission link survivability, information transmission integrity, real-time, testability, and gives a solution, which adopts system fault tolerance, packets error control codes, to realize CAN bus fail-safe communication, The results from function testing and theoretics calculation show that the design corresponds to fail-safe principle, the safety of systemin reaching the computer-based interlocking system requirements.

关 键 词：计算机联锁系统 CAN总线 故障 安全 通信 

分 类 号：U284[交通运输工程—交通信息工程及控制]