异步串行通讯在实时监控系统中的应用  

Application of Overlapped Serial Communication in Realtime Supervisory System

作　　者：王晓柱[1] 姜合[1] 任一男[1] 

机构地区：[1]山东轻工业学院计算机科学技术系,山东济南250100

出　　处：《仪表技术与传感器》2004年第6期23-25,共3页Instrument Technique and Sensor

摘　　要：针对"请求/应答"通讯模式探讨了采用异步(overlapped)串行通讯方式实现实时通讯的关键技术;给出了具有容错自恢复功能的通讯程序设计方法;提出了解决串口临界资源竞争和同步问题的监控命令抢先调度机制;结合实际工程应用给出了部分相关VB程序设计代码。Using overlapped serial communication,a series of key techniques aiming at'request/responsion'mode were discussed;a programming method is given to communication program with fault-tolerante functions;a supervisory command preemptive scheduling mechanism is provided accompany with competition of critical resource and synchronization;combined with a practical project,some relevant VB program codes were presented.

关 键 词：串行通讯 异步 容错 抢先 调度 

分 类 号：TN915[电子电信—通信与信息系统]