CBTC中安全通信协议的设计与仿真研究  

Design and Simulation Study of Safety Communication Protocol in CBTC

作　　者：杨明[1] 邱昕夕[1] 陈祥献[1] 黄海[1] 

机构地区：[1]浙江大学仪器科学与工程学系,杭州310007

出　　处：《计算机工程》2012年第19期241-246,共6页Computer Engineering

基　　金：国家科技支撑计划基金资助项目(2011BAG01B03)

摘　　要：依据欧洲标准EN50159设计一种用于CBTC各子系统间通信的安全通信协议。该协议面向连接,采用序列号、超时检测、安全编码等多种安全措施,在通信异常发生时,具备故障导向安全能力。借助OPNET仿真环境对协议的实时性进行分析。仿真结果表明,通过在仿真中注入链路故障协议验证故障导向安全功能,该协议能够满足CBTC系统的应用需求。This paper designs a safety-critical communication protocol according to the European standard EN50159 for the communication among the subsystems of Communication Based Train Control（CBTC）.The protocol is connection-oriented and adopts many safety measures such as sequence number,timeout,safety code and so on.When transmission errors occur,the protocol makes the system fall into the safe state.In the end,the real-time response of the protocol is analyzed with the help of OPNET.Simulation results show that the real-time response of the protocol can well satisfy the requirements of CBTC application.Through the injection of a link failure during the simulation,the fail-safe function of the protocol is verified.So the safety-critical communication protocol designed is good enough to be applied in CBTC.

关 键 词：欧洲标准EN50159 CBTC系统 安全通信协议 OPNET仿真环境 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]