以太网的列车通信网络主控设备性能监控

Monitoring System for Main Controller in Train Communication Network Based on Ethernet

针对列车通信网络(TCN)中的主控设备,设计开发了一套网络监控系统。系统基于以太网方式实现上位机与主控设备的通信连接,采用多线程技术、优先级和时间片轮转调度相结合的多任务技术、看门狗定时机制以及数据缓冲队列等手段实现了控制命令的快速响应和多组监控数据的实时并行传输与处理。重点研究了上位机与主控设备的数据传输与处理方式、多线程和多任务间的逻辑控制与调度,以及提高系统实时性和可靠性的问题。

A network monitoring system for main controller in the Train Communication Network （TCN）is designed and developed, which is able to connect PC and main controller through Ethernet and achieve the rapid response to the control commands and real-time parallel data transmission and processing. It contains many technologies, such as multi-thread technology, multi-task scheduling based on priority and time slice rotation, watch dog timing mechanism, and data buffer queue. This paper focuses on the data transmission and processing between PC and main controller, logic control and scheduling of multi-thread and multi-task, as well as the performance of real-time and reliability of the system.