目录
1 引言 ............................................................................................................................................3
2 设计内容及性能指标 .................................................................................................................3
3 系统方案比较、设计与论证 ......................................................................................................3
3.1 主控制器模块 .................................................................................................................3
3.2 温度测量 .........................................................................................................................3
3.3 设置温度 .........................................................................................................................4
3.4 显示模块 .........................................................................................................................5
3.5 电源选取 .........................................................................................................................5
4 系统器件选择 .............................................................................................................................6
5 硬件实现及单元电路设计............................................................................................................7
5.1 主控制模块 .....................................................................................................................7
5.2 显示模块电路 .................................................................................................................7
5.3 数码管显示驱动电路......................................................................................................8
5.4 温度传感器(DS18B20)电路 ............................................................................................8
5.4.1 DS18B20 基本介绍 ...............................................................................................8
5.4.2 DS18B20 控制方法 ...............................................................................................9
5.4.3 DS18B20 供电方式 ...............................................................................................9
5.5 继电器加热控制电路 ....................................................................................................10
结论 ................................................................................................................................................10
参考文献 ........................................................................................................................................11
附录 1 整体电路原理图 ..............................................................................................................12
附录 2 部分源程序 ....................................................................................................................13
