主从式微机监测系统主机与多台从机通讯的一种新方法  

A New Method of Main-frame Communicated With Sub-frame in Main-sub Microcomputer's Observing System

作　　者：佟为明[1] 赵志衡[1] 李风楼 张荣岭[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001 [2]哈尔滨市建筑设计院,哈尔滨150010

出　　处：《微处理机》1998年第1期49-51,共3页Microprocessors

摘　　要：介绍了主从式微机监测系统主机与多台从机通讯的一种新方法，给出了其硬、软件柜图。新通讯方法的基本思想是，每台从机只用二根线（发送线、地线）与主机相连，用从机发送每组数据之间的足够长的延时来保证主机与从机问的同步关系，采用奇偶校验来区别地址数据与测量数据。其系统具有结构简单、调试方便、工作可靠等优点，已成功地应用于实际现场。A new method which main frame comrnunicate with sub - frame in main -sub microcomputer's observing system is introduced,a frame of lts hardware and software is provided. Its primary thinking is that every Sub-frame is connected with main-frame by two wires (sending wire,ground wire), and sends enough long delay among every group of datas to ensure synchro of main - frame and sub - frame, the method adopts odd - even check to distinguish between address datas and observing datas. Its system has some advantages. For example, its structive ls simple, its control and inspection is convenient and its working is reliable,and so on. lt has been applied successfully in practical spot.

关 键 词：主从式 微机监测系统 通讯 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置]