基于RT-TCP/IP的虚拟试验通信平台研究  

Research on Virtual Testing Communication Platform Based on RT-TCP/IP

作　　者：杨红松[1] 杜承烈[1] 尤涛[1] 石磊[1] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072

出　　处：《测控技术》2009年第3期60-63,67,共5页Measurement & Control Technology

基　　金：航空科学基金资助项目(04I53066)

摘　　要：网络是虚拟试验系统环境的重要组成部分。以某军工虚拟试验系统为背景,基于RT-TCP/IP和虚拟共享内存机制实现了虚拟试验通信平台。分析了RTX实时操作子系统和RT-TCP/IP的实时性能,论证了使用RT-TCP/IP协议构建虚拟试验局域网的可行性;设计并实现了实时以太网虚拟共享内存中间件(RTEVSM)。在RTX环境下对RTEVSM中间件的数据传输延迟、抖动性等性能指标进行了测试,与在Windows-NT环境下性能指标进行对比,验证了系统在RTX环境下具有较强的实时性和传输可靠性。应用结果表明,本方案对实时性要求高的分布虚拟试验系统搭建具有一定的实用价值。Network is an important part of virtual testing system environment. Under one weapon virtual testing system background, virtual testing communication platform based on RT-TCP/IP protocol and the mechanism of virtual shared memory is established. The real-time behaviors of real-time extension and RT-TCP/IP are ana- lysed, the feasibility of using RT-TCP/IP protocol to put up LAN of virtual testing is verified; virtual shared memory middleware based on real time Ethernet（RTEVSM） is designed and implemented. Under the Environ- ment of RTX, Performance index of RTEVSM including data transmission delay and delay jitter is measured. The comparison of performance index between the environment of RTX and the environment of Windows-NT proves that the system under the environment of RTX has better real-time performance and is more reliable of transmission. The results show that this scheme has certain practical value to construct distributed virtual test system which has critical real-time requirement.

关 键 词：虚拟试验 实时扩展 实时以太网 虚拟共享内存 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]