《小区智能化报警系统设计_毕业设计》由会员分享，可在线阅读，更多相关《小区智能化报警系统设计_毕业设计（41页珍藏版）》请在金锄头文库上搜索。
1、I小区智能化报警系统设计摘要随着信息技术的飞速发展以及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，智能化报警系统应运而生。 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，本系统采用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、声光报警电路及单片机控制电路等。自动检测功能由红外探测电路
2、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，由主机来判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安防报警功能的需要。关键词：安防报警，红外探测，RS-485 通信，声光报警IIINTELLIGENT COMMUNITY ALARM SYSTEMABSTRACTWith the rapid development of communication technique and great improvement o
3、f peoples 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
4、 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 eas
5、y 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 MCU control circuit. Automatic detection can
6、 be completed by infrared detecting circuit. When theft is detected, the signal produced by infrared sensor will be transmitted to the signal processing module, and then this circuit sends the signal received to the main circuit which will judge it and drive the alarm module. Alarm function is reali
7、zed by audible devices such as speaker, buzzer, etc., and it can be transmitted to sub-district guardhouse through RS-485 communications alerting. This system detects the infrared signal of human body by infrared sensor, so it has the alarming function. This system meets the need of anti-theft and a
8、larm in peoples daily live.KEYWORDS：anti-theft and alarm, infrared detecting, RS-485 communication, sound and light alarmi目录摘要 .IABSTRACT.II1 绪论 .11.1 前言 .11.2 防盗报警系统在国内外的发展 .11.3 防盗报警器的发展前景与趋势 .11.4 设计任务与要求 .22 系统方案设计 .32.1 系统总体设计思路 .32.2 系统方案设计 .32.3 传感器简介 .42.3.1 热释电红外传感器简介 .42.3.2 热释电红外传感器电路图 .52.3.3 被动式热释电红外探头的工作原理及特性 .52.4 51 系列单片机的内部组成 .62.4.1 89C51 单片机的内部组成 .72.4.2 89C51 单片机引脚及功能 .72.5 RS485 接口 .93 硬件设计 .103.1 电源电路设计 .103.2 热释电红外传感器原理 .113.3 放大电路的设计 .113.4 红外探测信号输入电路 .123.5 键盘电路设计 .143.6 时钟电路的设计 .143.7 复位电路的设计 .153.8 声光报警电路的设计 .
