基于TRDP协议的高速动车组列车通信网络检测平台-《高速铁路技术》

文章信息/Info

Title:: Train Communication Network Detection Platform of High-speed EMU Based on TRDP Protocol

Author(s):: ZHANG Dalin; HAO Ziteng; WANG Hongwei; LIN Siyu; Beijing Jiaotong University, Beijing 100044, China

Keywords:: TRDP protocol|train communication network|Ethernet|400 km/h high-speed EMU

摘要:: 随着列车智能水平的不断发展，列车车载网络采用的WTB/MVB技术受传输带宽的限制，已无法满足智能列车业务承载的需求。目前列车车载网络正向着以太网技术演进，400 km/h高速动车组已应用了以太网技术。但以太网技术主要采用CSMA/CD协议，随着业务承载量的增大，业务传输过程中碰撞概率会不断增高，从而导致网络时延不稳定，甚至发生丢包和网络拥塞现象。本文基于TRDP协议构架了列车通信网络服务质量实时检测平台，依托WinPcap嗅探库进行数据包采集，结合Flink数据处理引擎实现了对以太网通信网络指标的实时计算，应用实序数据库InfluxDB对实时数据进行存储，能为列车运维人员实时展示并统计列车各类业务的网络运行状况，对保障列车通信网络的安全性和可靠性具有重要意义。

Abstract:: With the continuous development of train intelligence, WTB/MVB technology applied in the onboard network is restricted by transmission bandwidth, and can no longer meet the service carrying demand of the intelligent trains. At present, the onboard network of trains is developed towards the Ethernet technology which has been applied to the 400 km/h high-speed EMU. However, CSMA/CD protocol is mainly adopted in Ethernet technology. With the increase of service carrying capacity, the collision probability will increase continuously in the process of service transmission, which leads to unstable network delay and even packet loss and network congestion. In this paper, a real-time detection platform for the service quality of train communication network is constructed based on TRDP protocol, data packets are collected based on WinPcap sniffer library, Ethernet communication network indicators are calculated in real time according to Flink data processing engine, and time series database InfluxDB is applied for real-time data storage, which can display and make a statistics on the network operation status of various train services in real time for train operation and maintenance personnel, and is of great significance to ensure the safety and reliability of train communication network.