vxWorks下基于缓冲队列的全双工网络通讯  

Full Duplex Network Communication Under VxWorks Based on Buffering Queues

作　　者：程敬原[1] 宋克柱[1] 安琪[1] 

机构地区：[1]中国科学技术大学近代物理系快电子学实验室,合肥230027

出　　处：《计算机工程与应用》2004年第11期118-120,共3页Computer Engineering and Applications

基　　金：国家863高技术研究发展计划(编号:2001AA602011-1)

摘　　要：文章针对半自动大型仪器使用半双工网络通讯造成的效率下降问题,建立了在嵌入式实时操作系统vxWorks下全双工网络通讯的模式,并特别提出了双缓冲队列的流水线处理方法和通讯死时间的概念。该方法充分利用vxWorks对多任务和网络的良好支持,做到了在操作人员层面上的软件零死时间,在改善系统响应特性,提高软件效率上都很有帮助。因此比半双工通讯方式更加适用于半自动控制。Generally,half duplex n et communication method decreases the efficiency of semiautomatic devices.To solv e this problem,a mode of full duplex is developed,under the embedded RealTime Operating System vxWorks.Specially,the method of pipeline based on multi-buf fering queues and the concept of communication dead-time are introduced.This method makes the best of vxWorks's support on multi-tasks and network programm ing.It achieves near zero software dead-time on operational level,improves t he response characteristic,and increases software efficiency.Comparing with ha lf duplex mode,it is more applicable to semiautomatic control.

关 键 词：缓冲队列 全双工 网络通讯 VXWORKS 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]