毕业设计论文家庭自动拨号报警装置设计摘 要本次设计经过对比分析国外多种报警器的部结构和功能 ,设计了一种以AT89C51 单片机作为核心的自动拨号报警器
通过二氧化碳传感器检测空气中的二氧化碳浓度来确定是否发生火灾,通过热释电红外传感器来检测是否发生了盗情,再有双音低频电路和 DTMF 模块进行自动拨号报警,从而达到防火、防盗的目的
它可保存多组,可检查显示已存储的
从传感器得到信号时(即有警情),可自动拨号,达到报警的目的
安装不同的传感器可组成不同的报警功能,用于不同的场合
关键词: AT89C51;自动拨号报警;DTMF 模块;双音低频The Home Phone Automatic Dialing Alarm Device DesignABSTRACTThis design through comparison and analysis at home and abroad a variety of internal structure and the function of alarm
We design a automatic telephone dialing alarm system with AT89C51 as the core
By carbon dioxide sensors to detect the concentration of carbon dioxide in the air to determine whether there is a fire,It has dual frequency automatic dialing alarm and DTMF circuit modules, So as to achieve the purpose of fire prevention, guard against theft