| With the continuous improvement of train comfort and safety,the increasing data transmitted in the train communication network,so that the traditional train bus can no longer meet the transmission of large amounts of data in the train communication network.The Ethernet train communication technology with high bandwidth is gradually replacing the traditional train bus.Although Ethernet communication network has higher bandwidth and faster speed,it is inevitable that network abnormalities occur during the communication process due to network link and equipment problems.In addition,the train communication network is the infrastructure for the train equipment to communicate,so the train communication network should be monitored.Based on the above analysis,this paper designs a train Ethernet real-time monitoring system.It can monitor the train network,analyze the communication status of various services in the train communication network,and perform real-time statistics on abnormal information.This system mainly includes five modules: network data packet collection,performance index statistics,real-time display,data management,and monitoring report export.It plays an important role in helping train network administrators analyze the network and equipment operating conditions in the train communication process in real time.This paper mainly contains the following parts:(1)It explains the project background and research significance of the train Ethernet monitoring system,analyzes the current domestic and foreign development status of the network monitoring system,and describes the train ethernet communication network architecture,Train Real-time Data Protocol and key technologies involved in system.(2)Through the demand analysis of the train network monitoring system,it designs the overall architecture and functional architecture of the monitoring system,as well as the conceptual model and logical model of the database.(3)It introduces the detailed design and implementation process of the train communication network-monitoring platform.This platform relies on Win Pcap for data packet collection,achieves real-time calculation of train Ethernet communication network indicators by combining with the Flink data processing engine,uses the time-series database Influx DB to store statistical results,and realizes real-time display of statistical results,data management and report export by combining with the application platform.In the end,it conducted a functional test and a non-functional test on the network monitoring system.The train Ethernet real-time monitoring system realizes the real-time calculation of the performance indicators of various services in the train communication network.It can help network operation and maintenance staff to analyze the communication status between various devices in the train.Besides,the whole system is designed and implemented in a distributed architecture mode,which provides a reference for the train control center to build a remote train communication-monitoring center. |
