目 录1 绪论...................................................................11.1 讨论背景和意义.....................................................11.2 课题内容...........................................................32 方案设计与比较.........................................................42.1 控制部分...........................................................42.2 检测部分...........................................................92.3 算法部分..........................................................143 系统硬件设计..........................................................173.1 硬件总体框图及说明................................................183.2 单元电路设计......................................................193.2.1 复位电路............................................................193.2.2 键盘电路............................................................193.2.3 测温部分电路.......................................................203.2.4 显示电路............................................................213.2.5 音频输出电路.......................................................223.2.6 控制电路............................................................234 软件设计..............................................................244.1 主程序流程图.....................................................244.2 各个子程序的介绍.................................................264.2.1 系统初始化.........................................................264.2.2 键盘扫描............................................................264.2.3 LED 显示............................................................274.3 PID 计算.........................................................284.4 继电器控制.......................................................294.5 语音播报.........................................................294.6 中断流程图.......................................................305 总结....................................................
