基于单片机煤气泄漏报警装置设计.doc

基于单片机的煤气泄漏报警器的设计 摘要 人们生活中，离不开煤气，怎样防止煤气中毒和爆炸，是人们的迫切需要解决的问题，故智能煤气报警系统走入了我们的世界。本系统主要针对传统煤气检测系统进行技术改进以满足要求，至此本系统具有如下特点．用单片机实现定时控制，电路简单、价格便宜、可靠性好。采用气敏传感器及防爆型电磁阀．安全可靠，能有效的保证随时接通和断开煤气控制电磁阀：有煤气泄漏时有语音报警，并通过总线通知管理室．双重保障。因此本系统也可作为智能家居系统的一个子系统。 关键词： 51单片机； 气体传感器； RS485总线  The gas leakage alarm system based on single chip microcomputer Abstract Gas has become indispensable in peoples life energy, gas leak, to peoples personal safety and property safety brought many hidden dangers, Therefore we developed the intelligent gas alarm system. This system mainly for the technical improvement on traditional gas detection system to meet the requirements, so this system has the following characteristics. Using single chip microcomputer implementation timing control, circuit is simple, cheap and good reliability. Using gas sensors and explosion-proof solenoid valves. Safe and reliable, and can effectively guarantee at any time on and off the gas control solenoid valve: a gas leak voice alarm, and notify the management office by bus. Double protection. This system also can be used as a subsystem of the smart home system. Keywords： 51microcontroller; gas sensor; RS485 bus 目 录 TOC \o 1-3 \h \u HYPERLINK \l _Toc16546 第1章 绪 论 PAGEREF _Toc16546 1 HYPERLINK \l _Toc27695 1.1 论文设计的背景 PAGEREF _Toc27695 1 HYPERLINK \l _Toc27695 1.1 国内外研究现状 PAGEREF _Toc27695 1 HYPERLINK \l _Toc13557 1.3 论文的设计内容安排 PAGEREF _Toc13557 2 HYPERLINK \l _Toc20369 第2章系统设计技术基础 PAGEREF _Toc20369 4 HYPERLINK \l _Toc23400 2.1单片机简介及应用 PAGEREF _Toc23400 4 HYPERLINK \l _Toc23400 2.1STC89C52单片机的结构 PAGEREF _Toc23400 4 HYPERLINK \l _Toc13708 2.3 STC89C52管脚介绍 PAGEREF _Toc13708 5 HYPERLINK \l _Toc23400 2.1传感器的介绍 7 HYPERLINK \l _Toc15376 2.5 传感器的结构介绍 PAGEREF _Toc15376 8 HYPERLINK \l _Toc32742 第3章 系统的硬件设计 PAGEREF _Toc32742 9 HYPERLINK \l _Toc11188 3.1 系统供电 PAGEREF _Toc11188 9 HYPERLINK \l _Toc2574 3.2 系统硬件框图 PAGEREF _Toc2574 9 HYPERLINK \l _Toc12959 3.3 数据处理 PAGEREF _Toc12959 11 HYPERLINK \l _Toc29503 3.