摘要随着社会经济的不断发展，人们对家庭安全越来越重视，这时家里就需要一个家庭红外线防盗报警器。红外线家庭防盗报警器是根据红外线的原理，利用红外线来传递信息，并且在触发后能迅速起到警报作用。一旦触发警报，小区保安室能迅速行动，这样就让我们的生命，财产安全得到保障。红外线防盗报警系统可以广泛的应用于生活中的各个领域，像商场、酒店、居民楼等等，越来越受到人们的欢迎。77239

    本次设计采用的红外线防盗警报系统是把热释电传感器，警报元件，基于单片机的控制回路，数码显示管和相关的控制电路组成。由单片机所控制的红外警报系统是以AT89C51芯片为主要控制部分，通过基于红外线发射器射出的红外线被被测物体挡住的时候主要的警报系统发出报警信号，警报系统由AT89C51芯片来控制运行，警报系统同时能发出声音和警示灯来进行报警。

    本次设计的报警系统可以在外人闯入的时候进行及时的探测，一般用于在有效的安保区域内。使用这种办法设计制造的警报系统具有使用方便，报警效果比较好的优点，发展前景十分广阔。

    该论文有图21幅，表5个，参考文献14篇。

毕业论文关键词：AT89C51型号的芯片  红外线传感器  信息采集模块  警报系统 

Design for Family Infrared Anti-theft Alarm System

Abstract With the continuous development of social economy，the family security is more and more attention, when the home needs a family infrared burglar alarm。 Infrared home burglar alarm is based on the principle of infrared ray, using infrared ray to convey information, and can quickly after the trigger alert。 Once an alarm, small area public security room can act quickly, so let's life and property safety guaranteed。 Infrared alarm system can be widely applied to every field of life, like market, hotel, residential building and so on and more and more get the welcome of people。

This design uses the infrared anti-theft alarm system is to put the sensor, alarm device, based on single chip microcomputer control circuit, digital display tube and the related control circuit。 The infrared alarm system controlled by single chip microcomputer based on AT89C51 chip as the main control part, based on infrared emitter injection infrared blocking object to be tested when the main alarm system alarm signal, alarm system controlled by AT89C51 chip to run, the alarm system can send sound and warning lights at the same time to report to the police。

The design of the alarm system can be timely detection when intruders, are commonly used in security area effectively。 Use this way to design and manufacture of alarm system is easy to use, alarm effect better advantages, promising prospects。       

The paper has a figure 21, table 5, 14 references。

Key Words: AT89C51 chip model   Infrared sensor  Information acquisition      module  An alarm system

目  录

摘要Ⅰ

Abstract-Ⅱ

目录Ⅲ

图清单-Ⅴ

表清单-Ⅴ

变量注释表VI 

1 绪论（引言）1

1。1选题背景-1

1。2主要设计内容-1

1。3主要设计办法-2

2系统总体设计方案-3

2。1系统概述-3

2。2主要元器件概述4

2。3总体设计模块-9

3硬件部分设计11

3。1信号检测部分和放大部分-11

3。2数码管显示电路-12

3。3警报执行部分设计13

3。4手动暂停信号14

3。5晶振与复位模块-15

4软件部分设计19

4。1主题程序设计19