单片机上下限温度报警器设计 大学学位论文.doc
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陕西理工学院
课程设计实验报告
课 程： 单片机原理及应用
题 目：上下限温度报警器
学 号：
姓 名：
班 级：
指导老师：
时 间：09.10.12-09.10.30
摘 要
随着时代的进步和发展，单片机技术已经普及到我们生活，工作，科研，各个领域，已经成为一种比较成熟的技术,本文将介绍一种基于单片机控制的，本可以设置报警温度，当温度不在设置范围内时，可以报警。 ··················································································································
1.方案论证
1.1.设计要求································································································5
1.2.设计方案论证·······························································································5
1.3.总体设计框图·······························································································6
2.系统组成及工作原理
2.1.DS18B20温度传感器与单片机接口电路····················································7
2.2.7断LED数码管电路及原理··············································································8
2.3.系统整体硬件电路·····················································································10
2.4.显示电路········································································································11
2.5开机复位电路································································································12
2.6.报警电路········································································································13
3.系统软件算法分析
3.1.主程序········································································································15
3.2.读出温度子程序·······························································································15
3.3温度转换命令字程序························································································
3.4计算温度子程序························································································
3.5显示子程序························································································
4.实验调试及测试结果分析······················································································18
5: 附录
6.1.整体电路图···································
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