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发明名称
单片机甲烷警报矿灯
摘要
一种单片机控制的甲烷警报矿灯。它是对专利号为96212457.5的甲烷警报矿灯的改进,保持了声光兼备、可酸碱通用和整体式结构特点,用8位单片机、场效应管、保险电阻等新器件取代专用集成块、继电器及熔丝管,还专为酸性警报矿灯设计了稳压电源。因此使电路简单可靠、成本低廉,整机外形小、耗电省、安装方便、维护容易。
申请公布号
CN2390204Y
申请公布日期
2000.08.02
申请号
CN99246281.9
申请日期
1999.10.08
申请人
鸡西矿务局安全仪器厂
发明人
张景辉
分类号
G01N27/00;F21L23/00
主分类号
G01N27/00
代理机构
代理人
主权项
1.一种甲烷警报矿灯,灯头、电缆与蓄电池连成一体,灯头内的照明与检测装置为一体双腔,其特征是:电池电源通过灯泡和场效应管T4构成光报警回路,通过蜂鸣器和三极管T3构成声报警回路,电池正极通过稳压电源,负极通过保险电阻接地,为单片机A2、双运放A1及检测电桥提供工作电压,A2一个输出口与T4栅极连接,另一个输出口通过电阻R15与T3基极连接,并通过R14接地A2的输入口接A1输出端,并通过电阻R13和电容C1接地,A2的其它I/O口分别经上拉电阻接稳压电源,A1中一运放与电阻R3、R4、R6、R7构成差动放大器,其输入端连接到检测电桥的输出,输出端连接到另一运放与R3、R5组成的施密特触发器输入端,触发器的给定电位器一端接地,另一端经分压电阻接稳压源。
地址
158100黑龙江省鸡西市鸡冠区红旗路10号
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