目录
目录...............................................................................................................................................i
摘 要............................................................................................................................................iii
Abstract........................................................................................................................................iv
1 综述............................................................................................................................................1
2 数字式多路温度采集系统硬件电路设计................................................................................2
2.1 温度采集电路设计.......................................................................................................2
2.1.1 DS18B20 简介...........................................................................................................2
2.1.2 温度采集电路结构....................................................................................................5
2.2 单片机控制电路设计...................................................................................................6
2.2.1 单片机芯片选择........................................................................................................6
2.2.2 AT89C51 单片机工作基本电路设计.......................................................................6
2.3 输入控制电路设计.......................................................................................................7
2.4 显示电路设计...............................................................................................................8
2.4.1 LED 数码显示管静态显示工作原理.......................................................................8
2.4.2 显示电路结构............................................................................................................9
2.4.3 显示电路工作过程....................................................................................................9
2.5 报警控制电路设计.......................................................................................................9
2.5.1 报警控制电路结构..................................................................................................10
2.5.2 报警控制电路工作过程..........................................................................................10
2.6 电源电路设计.............................................................................................................10
2.7 数字式多路温度采集系统元件清单.........................................................................11
2.8 数字式多路温度采集系统电路图.............................................................................11
3 数字式多路温度采集系统程序设计......................................................................................12
3.1 主程序设计.................................................................................................................12
3.2 子程序设计.................................................................................................................12
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