基于单片机与工控软件的多点测温系统的研发

A monitoring system for multipoint temperature measurement based on single chip microcomputer and industrial control software

以STC89C52RC单片机为核心,开发了一套多点温度采集系统。该系统利用标准的二叉树算法对挂接在总线上的数字温度传感器DS18B20进行识别和操作,采用红外线技术实现相邻2个单片机的无线通信,通过RS232串口实现单片机主机与计算机的通信,使用Visual Basic 6.0编制上位机工控软件实现对采集点的温度显示、记录、设置及报警等操作。实际运行表明,该系统稳定可靠,操作简单,界面友好,性价比高。该系统实现了总线式多点测温功能,其应用前景广阔。

This article developed a set of multipoint temperature acquisition and monitoring system by using the STC89C52RC single-chip microcomputer as the core .The system used a standard binary tree algorithm to recognize the digital temperature sensor DS 18 B20 which were articulated on the bus .The wireless communication of adjacent two single-chip microcomputers was realized by using infrared technol-ogy.The communication between single chip computer host and the computer was realized by using RS232 serial port .The upper computer industrial control software was programmed to achieve the opera-tions of collection points＇temperature＇s display, record, set and alarm and so on by using Visual Basic 6.0.Actual operation shows that the system has the stable and reliable performance , simple operation, friendly interface, high performance-price ratio.This system realizes the bus multipoint temperature measurement functions , it has a broad application prospect .