可燃气体报警系统的设计毕业设计论文.doc

陕西理工学院毕业论文(设计) I 可燃气体报警系统的设计翟豪勋( 陕西理工学院物理与电信工程学院通信工程专业 1104 ,陕西汉中 723003 ) 指导教师:李翠华[ 摘要] 近年来,由于可燃气体泄漏所引起的安全事故时有发生,为了有效避免此类事故的发生,本文设计了一款家用的可燃气体报警系统。此系统主要由单片机最小系统;天然气检测电路;数码管显示电路;远程报警和声光电路等组成。此系统能有效检测环境中可燃气体的浓度,一旦其浓度超出报警限定值,就能发出声光报警信号,开启换气装置,并且能随着浓度的增加报警音量逐渐增大,同时实现远程报警,能及时起到安全防范的作用。[ 关键词] SIM900A ;单片机;天然气检测;报警;显示; 陕西理工学院毕业论文(设计) II The design bustible gas alarm system ZhaiHaoxun (Grade201 1 ,Class 4 ,Major munication Engineering , School of Physics and munication Engineering , Shaanxi University of Technology, Hanzhong 723003,Shaanxi) Tutor: LiCuihua Abstract : In recent years, caused bustible gas leakage accidents have occurred , in order to avoid such accidents, we design a bustible gas alarm system. This system consists of smallest s ingle chip puter system; g as detection circuit ; digital display circuit; remote alarm sound and light circuit. This system can detect the concentration bustible gases in the environment, once the concentration exceeds the alarm limit value can be audible and visual alarm signal, open ventilation devices, and can alarm volume increases as the concentration increases, while remote alarm , in time to play a security role. Keywords : SIM900A; MCU; Gas detection ; Alarm; Display ; 陕西理工毕业论文(设计) III 目录 ............................................................................................................ 1 研究的目的和意义................................................................................... 1 国内外情况及其发展趋势....................................................................... 1 论文结构.................................................................................................... 1 ........................................................................................ 2 方案论证及选择....................................................................................... 2 方案论证......................................................................................... 2 方案选择..........................