目 录
第 1 章 绪论........................................................................................................1
1.1 研究背景...................................................................................................................................................1
1.2 研究意义...................................................................................................................................................1
1.3 研究内容...................................................................................................................................................1
第 2 章 系统硬件电路设计.....................................................................................2
2.1 电路总体方案...........................................................................................................................................2
2.2 单片机系统...............................................................................................................................................2
2.2.1 STC89C51 芯片.............................................................................................................................2
2.2.2 复位电路........................................................................................................................................2
2.2.3 晶振电路........................................................................................................................................3
2.3 驱动显示电路及报警电路.......................................................................................................................3
2.3.1 LCD 液晶屏显示电路...................................................................................................................3
2.3.2 蜂鸣器和 LED 指示......................................................................................................................5
2.4 DS18B20 温度传感器..............................................................................................................................5
图 2.4.1............................................................................................................................................................5
2.5 AT24C01 存储芯片...................................................................................................................................6
2.6 G5LA-14 继电器......................................................................................................................................6
2.7 HC-05 蓝牙模块.......................................................................................................................................7
第 3 章 系统程序设计...........................................................................................9
3.1 主程序.......................................................................................................................................................9
3.2 状态显示子程序.....................................................................................................................................11
3.3 温度设定子程序.....................................................................................................................................12
3.4 温度比较子程序.....................................................................................................................................13
3.5 PID 控制器..............................................................................................................................................14
3.6 串口数据传输部分程序.........................................................................................................................14
第 4 章 系统测试.................................................................................................1
4.1 模块测试 ..................................................................................................................................................1
4.2 系统功能...................................................................................................................................................1
结论..................................................................................................................2
参考文献............................................................................................................3
附录 1 部分关键源码及解释..................................................................................4
附录 2 系统原理图.............................................................................................18
附录 3 英文文献翻译..........................................................................................23