![](https://csdnimg.cn/release/download_crawler_static/88018941/bg7.jpg)
目录
1 前言 ................................................................................1
2 整体方案设计 ........................................................................3
2.1 方案论证 ......................................................................3
2.2 方案比较 ......................................................................4
3 单元模块设计.........................................................................5
3.1 单片机控制电路模块 ............................................................5
3.2 温度采集转换电路模块 ..........................................................7
3.2.1 K 型热电偶 ..............................................................7
3.2.2 具有冷端补偿的数字温度转换芯片 MAX6675...................................8
3.3 显示电路模块 .................................................................10
3.4 报警电路模块 .................................................................12
4 软件设计............................................................................13
4.1 主程序设计....................................................................13
5 系统技术指标及精度和误差分析........................................................14
5.1 系统仿真结果..................................................................14
5.2 误差分析 .....................................................................14
6 结论 ...............................................................................16
7 致谢 ...............................................................................17
8 参考文献 ...........................................................................18
附录 1 电路原理图 .....................................................................19
附录 2 源程序代码 .....................................................................20
1 前言
温度是反映物体冷热状态的物理参数,对温度的测量在冶金工业、化工生产、电