目录
第一章 背景意义和功能介绍 ...................................................................................5
1.1 背景意义......................................................................................................5
1.2 功能要求........................................................................................................5
第二章 方案论证.......................................................................................................6
第三章 系统硬件设计...............................................................................................7
3.1 单片机的选择 ..........................................................................................7
3.2 温度检测传感器的选择 .............................................................................8
3.21 DS18B20 简介 ....................................................................................8
3.22 DS18B20 测温原理 ..........................................................................9
3.3 电源电路的选择 ........................................................................................9
3.4 键盘的选择 ............................................................................................10
3.5 显示器的选择............................................................................................10
3.51 概述 .............................................................................................11
3.6 报警系统......................................................................................................12
3.7 加热系统....................................................................................................12
4.1 主程序..........................................................................................................13
4.2 按键扫描处理子程序 ..................................................................................15
4.3 加热控制程序..............................................................................................15
4.4 温度检测......................................................................................................16
第五章 源程序代码.................................................................................................17
第六章 课程设计体会.............................................................................................23
第七章 参考文献...................................................................................................24
附录一 快热式电热水器硬件原理图 .....................................................................25
附录二 快热式电热水器仿真图 .............................................................................26
附录三 快热式电热水器 PCB 图.............................................................................27
