列车以太网网络拓扑可靠性研究

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关键词：轨道车辆；列车网络；拓扑结构；以太网；可靠性；应用场景中图分类号： U270.38+2 ；TP393.11 文献标志码：Bdoi：10.20213/j.cnki.tdcl.2024.11.01.01

Abstract：The train network control system is an important guarantee for the reliable and safe operation of rail vehicles.It has the characteristics of multiple redundancy，high reliability，strong real-time，fast fault selfhealing and large bandwidth. With the gradual popularization and application of Ethernet in rail vehicles，it is necessary to analyze the reliability of train network control system topology and explore measures to improve reliability. The reliability analysis of a train network is a systematic，comprehensive process from part to whole. Through reliability analysis，the main factors and weak links afecting product reliability are found，and design and technological measures are adopted to improve the system reliability of train network. Therefore， firstly，the topology characteristics of Ethernet are analyzed，and based on the improved linear and ring topology，combined with typical application scenarios of trains and the configurationof terminal equipment，the reliabilityof network topology is systematically studied，and a complete evaluation method is formed，which is of great significance to the design and engineering application of train network systems.

Key words： rail vehicle;train network；topology； Ethernet；reliability； application scenarios

列车网络控制系统（TrainControlandMonitoringSystem，TCMS）是车辆的控制核心，是现代列车的“大脑和神经中枢”，是实现自动化和在轨道车辆上使用数字技术的关键。（剩余7748字）