本文以单片机为核心设计了家庭智能化安防报警系统。该系统包含烟雾传感器、湿度传感器、温度传感器、红外传感器、A/D转换、报警电路和单片机控制电路等,当有人闯入或者烟雾、温度、湿度等指标浓度超过设置浓度值,向单片机发出中断申请,单片机控制电话拨号电路,模拟摘机,自动拨号,并播放预先录制好的录音,从而达到保障住宅安全的目的。 In this paper, the microcontroller as the core design of home intelligent security alarm system. The system includes smoke sensor, humidity sensor, temperature sensor, infrared sensor, A / D conversion, alarm circuit and SCM control circuit. When someone enters or smoke, temperature, humidity and other indicator concentrations exceed the set value, Application, single-chip control telephone dial-up circuit, analog off-hook, automatic dialing, and play prerecorded sound recording, so as to achieve the purpose of ensuring residential security.