基于时间敏感网络的高速动车组网络拓扑仿真测试  

Simulation Test of High-speed EMU Network Topology Based on Time-sensitive Network

作　　者：梁北辰 赵红卫 LIANG Beichen;ZHAO Hongwei(Postgraduate Department,China Academy of Railway Sciences,Beijing 100081,China;Locomotive&Car Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院研究生部,北京100081 [2]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081

出　　处：《铁道机车车辆》2024年第6期41-50,共10页Railway Locomotive & Car

基　　金：中国铁道科学研究院集团有限公司科研计划(2020YJ075)。

摘　　要：以太网通信为高速动车组的智能化和多网融合提供了技术基础。针对多网融合可能导致的线路负载过高和线路拥塞,需要验证时间敏感网络在以太网控车方面的实用性。时间敏感网络能够对数据进行优先级分类,保证重要数据的确定性传输。针对高速动车组的多网融合场景,构建网络拓扑仿真模型。通过在仿真中对比线路空载与满载时开启和关闭TSN功能带来的影响,表明TSN设备能够稳定和降低线路满载时数据传输的时延。对单环网和双环网在正常和故障工况下的性能表现进行对比,表明两种拓扑都可以在出现单点故障时维持通信,且单环网在特定故障下的性能维持优于双环网。基于单环网网络架构和TSN交换机搭建试验台进行半实物仿真流量承载测试,表明单环网可以满足多网融合的运行需求。Ethernet communication provides the technical basis for the intelligence and multi-network convergence of high-speed rolling stock.In response to the excessive line load and line congestion that may result from multi-network convergence,it is necessary to verify the practicality of time-sensitive networks for Ethernet train control.Time-sensitive networks can prioritize data and ensure deterministic transmission of important data.Aiming at the multi-network convergence scenario of high-speed trainset,a network topology simulation model is constructed.By comparing the effects of turning on and off the TSN function when the line is unloaded and fully loaded in the simulation,it is shown that the TSN equipment can stabilize and reduce the time delay of data transmission when the line is fully loaded.Comparison of the performance of single-ring and dual-ring networks under normal and faulty conditions shows that both topologies can maintain communication in the event of a single point of failure,and that the single-ring network maintains its performance better than the dual-ring network under specific faults.Based on the single ring network architecture and TSN switches,a semi-physical simulation of traffic carrying test is carried out,which shows that the single ring network can meet the operational requirements of multi-network convergence.

关 键 词：时间敏感网络 列车通信网络 通信网络仿真 

分 类 号：U266[机械工程—车辆工程]