基于RTX的网络延迟测试系统设计与实现

摘要

Network delay has a huge impact on the network communication. On the basis of count card driver developed in the RTX, a set of test system of network delay is designed and implemented based on the RTX re al-time environment. The system uses high-frequency square wave signal generated in the timing of the GPS lock crystal as clock reference, to provide test clock for the sender and receiver. The process of real-time processing and transferring data runs in the RTX environment, the test data parameters are set up by interactive interface developed in LabWindows/CVI. Finally the test results are recorded into file. This test system not only measures the network transmission delay in RTX, but also proposes a reliable solution of delay test, which pro vides a strong reference for future network applications.%网络延迟对网络通信影响巨大,基于RTX实时环境,在开发了RTX下计数卡驱动的基础上,设计实现了一套网络延迟测试系统,该系统利用GPS锁晶振授时器产生的高频方波信号作为时钟基准,为发送方和接收方提供测试时钟,系统中实时处理、传输数据的进程运行在RTX环境下,在LabWindows/CVI下开发的人机交互界面来设置测试数据参数,最后将测试结果记录进文件.该测试系统不仅测出了RTX下网络传输延迟,而且提出了一种延迟测试的可靠方案,为今后的网络应用提供了有力参考.