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安全通信协议是保证基于通信的列车运行控制系统中通信安全的主要因素,其性能分析具有重要意义。针对基于通信的列车运行控制系统安全通信协议,选择分层赋时有色Petri网(CPN)对其进行研究,建立状态转换模型与包含数据延时和信道故障的模型,通过改变数据延时的概率和信道无故障的概率,对安全通信协议的稳定性和失效率进行仿真,仿真结果对安全通信协议的设计有一定的参考意义,用概率论与数理统计知识对仿真结果进行分析,分析结果体现数据延时和信道故障是如何影响安全通信协议的性能的。分析结果表明基于通信的列车运行控制系统安全通信协议是合理的。
The safety communication protocol is the main factor to ensure the communication security in the train operation control system based on communication. Its performance analysis is of great significance. Aiming at the safety communication protocol of train operation control system based on communication, this paper chooses layered colored Petri nets (CPN) to research its state transition model and model which includes data delay and channel failure. By changing the probability of data delay And channel without failure, the stability and failure rate of the safety communication protocol are simulated. The simulation results have certain reference meaning for the design of the safety communication protocol. The simulation results are analyzed with the knowledge of probability theory and mathematical statistics. The analysis results show How data latency and channel failures affect the performance of secure communication protocols. The analysis results show that the communication protocol based on train operation control system is reasonable.