摘要
以STC12C5A60S2单片机为核心,用气敏传感器(MQ-7)设计一可燃气体泄漏报警器。主要由可燃气体传感器、信号处理电路、单片机系统、显示及报警等组成。信号由气敏传感器检测,经过放大电路处理,由单片机内部AD转换器读入单片机,单片机对检测到的信号进行判断并将实测浓度值显示。若气体浓度超过预定数值时,将发出声光报警,同时切断气源,启动排气扇。实现了可燃气体的检测、报警、显示和相应处理功能,具有广泛的应用价值。
STC12C5A60S2 microcontroller as the core, with the gas sensor （MQ-7） Design a combustible gas leak alarm. Mainly by the combustible gas sensors, signal processing circuit, microcontroller system, display and alarm aqd oth- er components. Signal from the gas sensor detected after amplification circuit processed by the microcontroller reads the internal AD converter chip, chip on the detected signal and the actual concentration value judgments display. If the gas concentration exceeds a predetermined value, the audible alarm, and cut off the gas source, starts the exhaust fan. Achieve a combustible gas detection, alarm, display and processing functions accordingly, with wide application value.
出处
《湖南农机（学术版）》
2013年第6期80-81,共2页
Hunnan Agricultural Machinery
基金
湖南省教育厅科学研究项目(11C0184):射频无源匹配滤波器的全局优化研究
