目录
摘要 .............................................................................................................................................I
Abstract ......................................................................................................................................II
第一章 绪论...............................................................................................................................1
1.1 课题研究的背景及意义...............................................................................................1
1.2 电阻炉的应用与发展...................................................................................................2
第二章 系统总体设计方案.......................................................................................................4
2.1 设计总体思路................................................................................................................4
2.2 系统技术指标...............................................................................................................4
2.3 设计方案选择...............................................................................................................4
2.4 系统总体设计方案........................................................................................................5
第三章 系统硬件设计...............................................................................................................7
3.1 温度检测部分................................................................................................................7
3.1.1 温度传感器的选择.............................................................................................7
3.1.2 热电偶的工作原理.............................................................................................8
3.1.3 温度信号处理芯片 MAX6675 ...........................................................................8
3.2 单片机.........................................................................................................................10
3.3 时钟电路.....................................................................................................................13
3.4 复位电路.....................................................................................................................14
3.5 串口通信电路.............................................................................................................14
3.6 报警电路.....................................................................................................................15
3.7 显示电路.....................................................................................................................15
3.8 按键电路.....................................................................................................................18
3.9 D/A 转换电路..............................................................................................................19
第四章 软件设计.....................................................................................................................22
4.1 软件设计思路.............................................................................................................22
4.2 系统软件流程图.........................................................................................................22
4.2.1 主程序流程图...................................................................................................22
4.2.2 温度检测与处理子程序...................................................................................23
