文档介绍：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)bustiblegasalarmsystemZhaiHaoxun(Grade2011,Class4,municationEngineering,municationEngineering,ShaanxiUniversityofTechnology,Hanzhong723003,Shaanxi)Tutor:LiCuihuaAbstract:Inrecentyears,urred,idents,;gasdetectioncircuit;digitaldisplaycircuit;,oncetheconcentrationexceedsthealarmlimitvaluecanbeaudibleandvisualalarmsignal,openventilationdevices,andcanalarmvolumeincreasesastheconcentrationincreases,whileremotealarm,:SIM900A;MCU;Gasdetection;Alarm;Display;陕西理工毕业论文(设计)...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................-5传感器的主要特点...............................................................-5传感器的引脚功能及....