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。
关键词:
欧洲标准EN50159,
CBTC系统,
安全通信协议,
OPNET 仿真环境
Abstract: 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.
Key words:
European standard EN50159,
Communication Based Train Control(CBTC) system,
safety-critical communication protocol,
OPNET simulation environment
中图分类号:
杨明, 邱昕夕, 陈祥献, 黄海. CBTC中安全通信协议的设计与仿真研究[J]. 计算机工程, 2012, 38(19): 241-246.
YANG Meng, QIU Cuan-Xi, CHEN Xiang-Xian, HUANG Hai. Design and Simulation Study of Safety Communication Protocol in CBTC[J]. Computer Engineering, 2012, 38(19): 241-246.