基于单片机的声控报警器设计

摘要

介绍了一种以51单片机和驻极话筒为核心的声控报警器系统的设计。该系统利用驻极体话筒将声音信号转换成51单片机能够识别的电信号来控制报警器发出警报声和灯光报警。设计制作的声控报警器结构简单，能够迅速识别声音实现报警，具有电路简单、成本低廉、使用寿命长、灵敏度高的特点，可被广泛应用于家庭防盗以及企业生产的噪音检测中，具有实际应用价值。%A kind of acoustic alarm system is designed by 51 single-chip microcomputer and electret condenser microphone is introduced. The voice converts signal by electret condenser microphone and put into 51 single-chip microcontroller to control sound alarm and light alarm. This acoustic alarm has simple structure, fast response, able to quickly identify voice, low hardware cost, high sensitivity and long service life. It can be widely used in home security and the production of noise detection, so it has important practical applications.