基于单片机的红外感应防盗报警器的硬件设计摘要：随着社会的不断进步，电子技术的不断进展，人们的生活水平得到了很大的改善，许多高科技产品的使用越来越成为家庭生活的主旋律，因此人们对自己所处环境的安全要求就越来越高，特别是家居安全，不得不时刻留意不速之客的光顾。为此，许多小区、家庭都安装了报警系统，这可有效的保证了居民的人身财产安全。本文介绍一种利用热释电红外传感器进行监控报警系统的硬件设计。该报警器主要由热释电红外传感器及其检测电路、报警电路组成。热释电红外传感器是报警器设计中的核心器件，它可把人体的红外信号转换为电信号，以供信号处理部分使用。检测电路主要是把传感器输出的微弱电信号进行放大、滤波。结合单片机软件程序的分析，系统进而实现声光报警功能。关键词：热释电红外传感器；数据采集；报警电路；单片机Software Design of Infrared Induction Anti-theft AlarmBased on MCUAbstract ： With the social progress and electronic technology development, people's living standards have been greatly improved. The use of many high-tech products has increasingly become the main theme of family life, so people pay more attention to their safety requirements, especially in home safety, always have to keep an eye on strangers. Therefore, many residential areas and families install alarm system, which can effectively guarantee the personal and property safety. This paper introduces the hardware design of the monitoring and alarm system by using pyroelectric infrared sensors.This alarm system is mainly composed with pyroelectric infrared sensor, detection circuit, and alarm circuit. Pyroelectric infrared sensor is the core device of alarm, which can translate the body's infrared signal into electrical signal in order to processing. The detection circuit can amplify and filter the weak signal from the sensor. Combined with the analysis of microcontroller software program, the system accomplishes the functions of sound and light alarm...
