列车车辆级以太网拓扑可靠性分析研究

The Reliability Analysis Research on Train Consist Network Topology

以太网广泛应用于列车网络控制系统,列车单元内车辆级网络结构多样,如何选择合理的拓扑成为了需要解决的重要工程实现问题。文中从列车以太网的拓扑结构特点出发,分析了线形拓扑、环形拓扑、双归属拓扑等8种车辆级拓扑结构,针对各类拓扑的特点进行了可靠性分级,计算了各类车辆级网络拓扑设计的通信可靠性。列车网络控制系统应结合不同的场景需求,选择合理的拓扑结构以满足信息传输需求。

Ethernet is widely used in train network control system.Choosing a proper train consist network topology structure is an important thing which can improve communication efficiency and reliability.This paper analyzes eight kinds topology reliability which include the linear topology,ring topology dual-homing topology,and so on.The train network control system should combine different scenarios to select a reasonable topology to meet the information transmission demand.