7、统本文设计了一种火灾报警器。该系统设计核心为MCS-51单片机和MQ-2半导体气体烟雾传感器,芯片我们采用STC89C52芯片,火灾报警系统中的电路包括烟雾采集信号电路、前置放大电路、A/D转换电路、安全保护电路等主要电路组成。最终经过调试,确定本设计方案是可行的。关键字:单片机;传感器;烟雾报警器AbstractAlongwith theprogressoftimes, moreandmorepeople use electronicequipment, whetherthefamilyor thefactoryuse e
8、lectricalappliancesare moreandmore. It is becauseof theimproperuseof electricalappliances causedby fire isalsoverymuch. Ourcountry eachyearbecaus