1绪论..............................................................11.1选题背景及意义...............................................................................................................11.2国内温度调节系统的的发展............................................................................................11.3国外温度调节系统的发展...............................................................................................21.4设计研究内容....................................................................................................................21.5本文的内容与结构............................................................................................................32总体方案设计......................................................42.1温度传感器的分类............................................................................................................42.2方案比较............................................................................................................................52.3方案论证与选择................................................................................................................83各单元模块设计....................................................93.1单片机系统电路...............................................................................................................93.2温度采集电路..................................................................................................................113.3显示电路..........................................................................................................................113.4报警电路..........................................................................................................................123.5继电器电路.....................................................................................................................134特殊芯片介绍.....................................................154.1STC89C52单片机............................................................................................................154.1.1主要功能特性......................................................................................................154.1.2管脚说明.............................................................................................................164.2DS18B20数字温度传感器..............................................................................................184.2.1DS18B20功能特性..............................................................................................184.2.2DS18B20的内部结构..........................................................................................204.2.3工作原理.............................................................................................................214.2.4使用方法.............................................................................................................224.3报警器..............................................................................................................................235软件设计.........................................................255.1软件设计工具的介绍......................................................................................................255.1.1Keil编程软件..........................................................
