基于单总线温度传感器的温度检测系统毕业设计.doc

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1、49基于单总线温度传感器的温度检测系统设计基于单总线温度传感器的温度检测系统毕业设计目录中文摘要英文摘要1引言......................................................................51．1前言..................................................................51．2检测概述....................................................

2、..........51．3智能传感器概述........................................................51．4单总线系统概述.........................................................61．5智能温度传感器发展的新趋势................................................72数字温度传感器DS18B20...............................

3、.....................92．1DS18B20概述...........................................................92．1．1性能特点..........................................................92．1．2内部结构92．1．3管脚排列.........................................................102．1．4工作方式102．2DS1

4、8B20存储器及设置寄存器112．3DS18B20测温原理......................................................132．4DS18B20测温过程.....................................................152．5DS18B20使用注意事项..................................................173单片机AT89C2051......................

5、...................................193．1AT89C2051概述........................................................193．2AT89C2051外部单元....................................................203．2．1引脚.............................................................203．2．2电源.

6、............................................................213．3AT89C2051内部单元....................................................223．3．1结构框图.........................................................223．3．2运算器.................................................

7、..........2249基于单总线温度传感器的温度检测系统设计3．3．3控制器...........................................................233．3．4存储器...........................................................243．4AT89C2051程序保密性能................................................243．5AT89C2051软硬件的开发

8、................................................254温度检测系统设计........................................................264．1方案比较.............................................................264．2总体设计.......