摘要
以太网技术已经逐渐应用在城市轨道交通列车上,而不同的网络拓扑结构对列车的通信质量产生很大的影响。根据IEC61375构建了四种应用数据,仿真分析了总线性、环形和梯形三种网络拓扑结构,并对其网络时延、链路负载和链路利用率进行了比较;通过分析比较得出:在相同的负载下,梯形网络拓扑结构优于线型和环型网络拓扑结构;研究结果为基于以太网的列车通信网络拓扑结构的构建提供了参考。
Ethernet technology has been gradually applied in urban rail transit train, and network topologies can have different impact on the train communication network. Four kinds of application dates have been built according to IEC61375in this paper. Three network topologies which included liner, ring and ladder were simulated with the OPNET modeler. Then, the network delay, network load and the link utilization were compared in the simulation. According to the comparison, the ladder network topology is more superior than that of the linear and the ring network topology under the same load. The results could provide the reference value of the construction of the train network topology based on Ethernet.
出处
《装备制造技术》
2017年第1期112-115,共4页
Equipment Manufacturing Technology
关键词
城轨列车
以太网
拓扑结构
urban rail transit train
ethernet
topology structure
