列车以太网物理层一致性测试的应用

Application Research on Physical Layer Conformance Test of Train Ethernet

列车以太网一致性测试技术是保障列车以太网通信质量的重要手段。文中在研究动车组以太网相关测试规范基础上,总结形成了以太网测试的试验项点,设计了动车组以太网测试试验台,可对以太网物理层信号特征进行测试。在实际测试工作中证明了该设备可对被测设备的多项以太网参数指标实现测量、鉴别、和评判,提升了以太网通信测试能力和列车以太网系统集成的能力。

The Ethernet conformance test is one of the important methods to enhance the communication quality of TCMS (Train Control and Management System) equipment.In this paper,the normative requirements for the Ethernet physical layer are discussed.And a set of characteristic analysis process with the conformance test bench is summarized for train Ethernet physical layer analysis.In the test,the test bench can identify the Ethernet device communication capability,and even making suggestions about improvement.