列车通信网性能测试的研究与实现

Study and Implementation of Train Communication Network Performance Testing

以实际列车网络控制系统为对象,对其通信网络的响应时间、可靠通信概率、负载能力等性能指标的测试进行了研究。详细介绍了网络性能测试的工作原理和测试设备的硬件结构设计,分析了基于实时多任务调度的软件层次结构,并基于实时多任务操作系统μC/OS-Ⅱ实现了测试软件的设计,最终完成了对MVB网络性能指标的测试,对实际应用起到了很好的指导作用。

The testing of communication network performance parameters such as response time, communication reliability and throughput on train communication network control system is studied. The operation principle of performance testing and the hardware structure of the testing device are introduced in detail. Besides, a software structure based on real-time multitask is analyzed. And the software of testing device has been developed based on μC/OS-Ⅱ, which is an embedded real-time multitask operation system. Eventually, the performance parameter measurement is finished based on above testing system and the results provide some useful guidance for application.