摘 要随着信息技术的飞速进展以与人们生活水平的大幅度提高，人们对住宅的需求已从追求简单的生存空间向着追求质量、功能、服务等多重需求过渡。同时，随着人们的保护意识不断增强，防盗措施的紧迫性也逐渐被提上了日程，防盗报警系统应运而生。 本文设计了住宅智能化中的红外防盗报警系统。本系统以单片机 89C51 为核心，配以各种功能模块，来满足人们日常生活中的安全需求，本系统采纳了热释电红外传感器，它的制作简单、成本低，安装比较方便，抗干扰力强、灵敏度高，而且安装较隐蔽，不易被发觉。该系统主要包括红外探测电路、LCD控制电路、声光报警电路与单片机控制电路等。自动检测功能由红外探测电路实现，当有盗贼穿过此装置时，红外传感器立即将检测到的信号经过信号处理后传送给主机电路，由主机来推断信号并驱动电路报警。报警功能由扬声器、蜂鸣器等发声装置实现，同时通过 RS-485 通信报警给小区警卫。本设计通过红外传感器探测人体红外线信号，从而达到报警的功能，满足了人们日常生活对防盗报警功能的需要。关键词：防盗报警，红外探测，RS-485 通信，声光报警ABSTRACTWith the rapid development of communication technique and great improvement of people’s living standard, the need has been changed from only the living space to multiform needs of quality, function, service and so on. At the same time, as the increasing of protecting awareness, security measures have gradually been put on the agenda. Anti-theft alarm system came into being. A kind of intelligent infrared anti-theft alarm system is designed for residential area. In order to meet the security needs of daily life, this system with various function modules cores with microcontroller 89C51. This system used Pyroelectric infrared sensor，it also has some advantages such as easy making, low cost, convenient installation, strong anti-interference ability, high sensitivity, and a more hidden installation and difficult to found. This system includes infrared detecting circuit, LCD control circuit, sound and light alarm circuit and ...
