基于RS-485总线的粮仓监控系统设计  

Design of Granary Monitor System Based on RS-485 Bus

作　　者：李志俊[1] 曾光[1] 沈克宇[1] 李超[1] 杨剑[1] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430063

出　　处：《微计算机信息》2009年第11期111-112,238,共3页Control & Automation

摘　　要：本文主要介绍了以上位机PC为核心的RS-485总线技术实现的集温、湿度监测和报警等功能为一体的粮仓监控系统,设计了一种零延时的RS-232/RS-485智能型转换器,制订了上位机与下位单片机之间的通信协议,实现了上位机与下位机的通信,达到远程监控的目的。在VC++2005开发环境下利用API编程实现了与下位单片机的串口通信,并利用ADO访问SQL数据库,实现了对采集来的数据进行存储、查询、绘图、打印等。In this paper, a monitor system was presented. The system included data connected, temperature monitor and alarm based on RS-485 Bus. An intelligent no time-delay RS-232/RS-485 converter was designed. Making communication protocol, what enable the communicating between the server PC and the client MCU carry out the remote supervisory. In the VC＋＋ 2005 development platforms, use API programming to realize the serial communication and access the SQL database by ADO in order to store, inquire, draw, print the collected date etc.

关 键 词：RS-485 零延时转换器 API串口通信 I^2C总线 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]