单片机在数据遥测遥控通信系统中的应用研究

Research on the Application of Single Chip Microcomputer in Data Telemetering and Telecontrol Communication System

本文提出了一种用于油田水源井数据传输、控制、通信及管理的无线遥测遥控通信系统,该系统由主机、终端机、中转机、上位机(PC机)、电台等几部分组成.分析了系统各部分的工作过程及相互之间的关系,并提供了系统的软、硬件框图.文章讨论了各终端机与主机利用AM7910调制/解调芯片,通过电台相互传输数据的问题.由于采用了中转机使系统形成了树形传输网的逻辑结构,从而解决了系统扩展的问题.本文还提出了由一片主8031单片机控制其它几个由从8031单片机控制的数据存储板,来增加主机内存量的一种方法.

A telemetering and telecontrol communication system used in data transmission, control, communication and management in water supply wells of oil field is presented in this paper. It is composed of a center unit, a person computer, terminals, a transfer station and a FM radio set, etc. The working process of each part of the system and the relations among them are analysed. The hardware and software block diagrams of the system are given, It discusses problem of data transmitting between the terminals and the centre unit through modem AM 7910 and FM radio T—R set. The use of the transfer station in the system makes the transmitting network a tree —shaped structure in logic, which solves the problem of system expanding. A method is introduced that the main 8031 single —chip microcomputer controls several subordinate 8031 single — chip microcomputers which in turn control a data memorizing board respectively. In this way the inner memory of the centre unit is increased.