基于单片机的水浴温度控制系统的设计  

Design of Temperature Control System Based on SCC for Water-reservoir

作　　者：李全虎[1] 仲兆楠[2] 李彦丽[1] 

机构地区：[1]内蒙古大学理工学院电子工程系,呼和浩特010021 [2]内蒙古大学理工学院自动化系,呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2003年第6期696-699,共4页Journal of Inner Mongolia University：Natural Science Edition

基　　金：航天部第六研究院测试所资助项目

摘　　要：介绍了基于89C52单片机的水浴温度控制系统硬件电路的组成、设计方法和工作原理.PT100温度传感器和精密电阻构成的电桥测量电路输出微弱的电压信号.AD620组成的精密放大电路完成调零和放大后送到A/D电路,再将模拟信号变换成数字信号.单片机根据输入量和设定量进行模糊运算,输出一路开关量和一路数字量.开关量控制制冷系统,数字量经D/A变换后通过调功模块控制加热量将温度控制在设定值.Based on 89C52 single chip computer (SCC),the composition hardware circuits,design and working principle of waterreservoir temperature control system are introduced.The electrobridge measurement circuit,which consists of PT100 temperature sensor and precise resistance,outputs slight voltage signals.After being zeroadjusted and amplified by the precision amplifier circuit that consist of AD620,the signal is delivered to the A/D circuit,so the analog signal is converted into digital signal.According to the input and setting,the SCC carries out blurring operation and outputs one route of switch value and one route of digital value.The switch value controls the refrigeration system,and the digital value controls the heating by power adjustment module to control the temperature after being D/A transformed.

关 键 词：单片机 温度控制 电路设计 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]