红外防盗报警器的设计
胡锐锋
电子信息工程专业 学号：
摘 要：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，而且防盗性能比较稳定，抗干扰能力强、灵敏度高、安全可靠。这种防盗器安装隐蔽，不易被盗贼发现，同时它的信号经过单片机系统处理后方便和PC机通信，便于多用户统一管理。本设计包括硬件和软件设计两个部分。硬件部分包括单片机控制电路、红外探头电路、驱动执行报警电路、LED控制电路等部分组成。处理器采用51系列单片机AT89C51，整个系统是在系统软件控制下工作的。
关键词：单片机；红外传感器；数据采集；报警电路
The Design of Imfrared Alarm
Hu Ruifeng
Electronic Information Engineering Specialty No:
Abstract : This system used Pyroelectric infrared sensor. Its manufacture is simple, and its cost is low, and fixing is convenient. Besides, the system . After processed by SCM, the signal of alarm communicates with PC, which is convenient for uniform management. This design includes ; alarm circuit
目 录
0
摘
要······························································1
·
·
·
·
·
1 引
言····································································4 1
.
1
设
计
任
务
与
要
求 ·······················································4 2
基
础
知
识
介
绍···························································4 2.1
热
释
电
红
外
传
感
器
简
单
介
绍 ·············································4 2.2
PIR
的
原
理
特
性·························································5 2.3
AT89C51
单
片
机
简
单
概
述·················································5 2.3.1
AT89C51
单
片
机
的
结
构·················································5 2.3.2
AT89C51
单
片
机
管
脚
说
明···············································6 3
方
案
设
计································································8 3.1
总
体
设
计
思
路 ··························································8 3.2
具
体
电
路
模
块
设
计 ······················································9 3.2.1
热
释
电
红
外
传
感
器
原
理 ················································9 3.2.2
放
大
电
路
的
设
计 ······················································9 3.2.3
时
钟
电
路
的
设
计 ······················································9 3.2.4
复
位
电
路
的
设
计······················································10 3.2.5
发
光
二
极
管
报
警
电
路
的
设
计············································10 3.2.6
声
音
报
警
电
路
的
设
计··················································11 3.3
系
统
硬
件
电
路
的
选
择
及
说
明·············································11 3.4
软
件
的
程
序
实
现·······················································12 3.4.1
主
程
序
工
作
流
程
图····················································12 3.4.2
中
断
服
务
程
序
工
作
流
程
图···············································13 4
软
件
仿
真·······························································13 5
总
