目录
摘要 ......................................................................................................................................3
Abstract ................................................................................................................................3
1 绪论 ................................................................................................................................5
1.1 课题背景 ............................................................................................................6
1.2 设计概述 ............................................................................................................6
1.3 煤气检测报警器的国内外现状 ........................................................................6
1.4 煤气检测报警器的发展趋势 ............................................................................7
1.5 研究内容 ............................................................................................................8
1.6 设计任务分析 ....................................................................................................8
2 总体方案设计 ................................................................................................................9
2.1 气体检测传感器的介绍 ..................................................................................10
2.2 单片机选型 ......................................................................................................13
2.2.1 STC89C52 单片机简介 .........................................................................13
2.2.2 单片机的引脚功能描述 ....................................................................14
3 系统的硬件电路 ..........................................................................................................16
3.1 单片机最小系统 ..............................................................................................16
3.2 单片机的时钟电路与复位电路设计 ..............................................................17
3.3 煤气检测 AD 采集电路 ....................................................................................18
3.3.1 AD 采集芯片 ADC0832 介绍 .................................................................18
3.4 显示模块 ..........................................................................................................20
3.5 声音报警电路 ..................................................................................................20
3.6 按键控制电路 ..................................................................................................21
3.7 电源模块 ..........................................................................................................22
4 系统软件的设计 ..........................................................................................................23
4.1 系统主程序设计及流程图 ..............................................................................23
5 硬件调试及调试中遇到的问题 ..................................................................................24
6 电路的调试 ..................................................................................................................24
7 总结评价 ......................................................................................................................24
致谢 ....................................................................................................................................25
参考文献 ............................................................................................................................26
附件一：总体原理图设计 ................................................................................................27
附件二：部分程序源代码 ................................................................................................28
