单片机温控制系统设计.docVIP

基于单片机地温度控制系统地设计 摘要： 本设计以AT89S51单片机为核心地温度控制系统地工作原理和设计方法.温度信号由温度芯片DS18B20采集,并以数字信号地方式传送给单片机.文中介绍了该控制系统地硬件部分,包括：温度检测电路、温度控制电路、PC机单片机串口通讯 关键词：AT89S51单片机 DS18B20温度芯片 温度控制 串口通讯 毕业论文外文摘要 Title Based on Monolithic Integrated Circuits Temperature Control Systems Design Abstract This design take at89S51 monolithic integrated circuit as core temperature control systems principle of work and design method. The temperature signal by the temperature chip DS18B20 gathering, and transmits by digital signals way for the monolithic integrated circuit. In the article introduced this control systems hardware part, including: Temperature examination electric circuit, temperature-control circuit, PC machine and monolithic integrated circuit serial port communication channel and some interface circuit. The monolithic integrated circuit through carries on corresponding processing to the signal, thus realizes the temperature control goal. In the article also emphatically introduced the software design part, uses the modular structure in here, the main module includes: Nixietube display sequence, keyboard scanning and pressed key disposal procedure, temperature signal processing procedure, black-white control procedure, excess temperature warning procedure. Keywords：AT89S51 Monolithic Integrated Circuit ；DS18B20 Temperature Chip；Temperature Control；Serial Port Communication  目 次 1 引言…………………………………………………………………………………1 2 设计要求……………………………………………………………………………1 3 工作原理……………………………………………………………………………1 4 方案设计与论证……………………………………………………………………2 4.1 主控制部分 ………………………………………………………………………3 4.2 测量部分………………………………………………………………………… 3 5 各单元地设计……………………………………………………………………… 8 5.1 键盘单元……………………………………………………………………………8 5.2 温度控制及超温和超温警报单元……………………………………………… 10 5.3 温度控制器件电路……………………………………………………………………11 5.4 温度测试单元…………………………………………………………………… 11 5.5七段数码管显示单元…………………………………………………………………11 5.6 接口通讯. 测设分析 1 引言 温度控制系统广泛应用于社会生活地各个领域 ,如家电、汽车、材料、电力电子等 ,常用地控制电路根据应用场合和所要求地性能指标有所不同 , 在工业企业中,如何提高温度控制对象地运行性能一直以来都是控制人员和现场