基于工业以太网的高速列车通信网络仿真研究分析

摘要

More and more data need to be transmitted in the high-speed train network, but the traditional field bus cannot meet the massive data transfer task because of its inherent shortcomings of low bandwidth. Since the Industrial Ethernet has the advantage of high bandwidth and low cost, a simulation model of train communication network by using OPNET software is built up. Specific packets of the train network are classified and modeled, the differences of bus delay characteristics and link utilization between 100 M and 1 000 M Ethernet networks are compared. The results show that the Industrial Ethernet of 1 000 M can meet the real-time and reliability requirements of train communication network well.%现代高速列车需要传输大量的数据.传统的现场总线存在带宽低的缺点,不能满足大量数据的传输任务,而工业以太网具备带宽高、成本低等方面的优势.利用仿真软件OPNET,搭建了基于工业以太网的高速列车通信网络仿真模型.针对实际高速列车网络通信数据特性进行分类,并对其进行分析和建模.通过仿真,对基于宽带100 M和1 000 M的工业以太网列车通信网络的延时特性和利用率等方面进行比较分析.仿真结果表明,宽带1 000 M工业以太网能够满足列车通信的实时性和可靠性要求.