32通道开关信号采集系统的设计与实现  

Design of Switch Signal Acquisition Card with 32-Channels

作　　者：樊琛[1] 李娜娜[1] 曹凡[1] 杨振坤[1] 

机构地区：[1]西安交通大学城市学院机械系,陕西西安710018

出　　处：《电子元器件应用》2012年第8期26-29,共4页Electronic Component & Device Applications

摘　　要：针对现代工业控制系统中开关量控制的问题,提出通过上位机与控制板的通讯来实现对开关量控制的方法,以STC89C51单片机为核心,设计了一种带有RS485通讯接口的多路开关量控制板,实现了开关量信号采集、控制、显示、判断及执行相应操作功能。Aiming at control of switch quantity the method of controlling by communication between supervisory computer and controller board was come up with. A type of controller board with RS485 and modbus interface that takes STC89C51 as its core was designed. Some function comes true,such as collecting single-numbers,controling, displaying,judging and running operations.

关 键 词：开关量 RS485 STC89C51 控制模块 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]