摘要：随着现代科技的飞速发展以及人们生活水平的提高,人们所持有的财产也越来越多，人们对自己所私有的财产的安全防范保护意识也就越来越强，所以，各种先进的防盗设施被发明。红外防盗装置以他经济实惠安装便捷的优势迅速进入人们的生活，成为人们防盗防窃的优先选择。这些安保装置大大的提高了人们私有财产的安全程度。本设计采用热释电红外传感器感应到入侵者的红外热辐射，将其转换成超低频信号，经电路放大、输出。检测器是利用红外人体检测探头检测预先设定好的范围内的情况，一旦有危险便向单片机发出信号，经单片机处理，控制蜂鸣器发出警告声音。它可以应用于家居防盗、仓库防盗等多种防盗场合，具有很强的实用价值和良好的市场前景。该报警器具有误报率较低、安装和配置容易、成本低、能量消耗少、使用非常方便的特点。91830

毕业论文关键词：报警系统，单片机 ，防盗系统

Abstract: With the rapid development of modern science and technology and the improvement of people's living standard, people have the property of more and more people to own private property safety protection consciousness is more and more strong, so all kinds of advanced anti-theft devices were invented。 Infrared anti-theft device in his economical convenient installation advantages quickly the life of people, become the first choice of people theft protection。 These security devices can greatly improve the safety degree of people private property。 This design uses the pyroelectric infrared sensor infrared radiation intruder, converts it into a super low frequency signal output by the amplifying circuit, the detector is the use of infrared human detection。 The probe detection range is preset in the situation, once the danger signal to the microcontroller processing by the microcontroller, control the buzzer warning sound can be used。 On many occasions anti-theft anti-theft Home Furnishing, storage security, has a strong practical value and good market prospects。 The alarm has a lower false alarm rate, easy installation and configuration, low cost, less energy consumption, use very convenient。

Keywords: alarm system, single chip microcomputer, anti theft system

目录

1。 绪论 4

1。1 选题的目的和意义 4

1。2 防盗报警器的分类及其介绍 4

1。2。1 被动式红外传感器 4

1。2。2主动式红外探测器 5

2。 系统方案选择与分析 5

2。1 方案选择论证 5

2。2系统概述 6

2。3总体电路设计 6

3。 硬件设计 7

3。1红外感应部分 7

3。1。1电源模块 7

3。1。2热释电传感器 7

3。1。3菲涅耳透镜 8

3。1。4 HC-SR501人体感应模块 9

3。1。5 信号采集处理模块 11

3。2数码管显示 12

3。2。1数码管显示原理 12

3。3单片机部分 14

3。3。1 单片机最小系统 14

3。4按键控制电路