基于单片机控制的红外防盗系统.doc

? 毕业设计（论文） 题 目： 基于单片机控制的红外防盗系统 系 部： 信息技术系 专 业： 电子信息工程 学 号： 学生姓名： 指导教师姓名： 指导教师职称： 讲师 二○ 10 年 12月 22 日 ?　 摘 要 随着时代的不断进步 ,人们对环境的安全性提出更高的要求 ,很多小区都安装了智能报警系统 ,大大提高了小区的安全程度 ,有效保证居民的人身财产安全.目前国内使用的各类防盗、保安报警器基本都是以超声波、主动式红外发射/接收以及微波等技术为基础.而这里所设计的被动式红外报警器则采用了美国的传感元件——热释电红外传感器.这种热释电红外传感器能以非接触形式检测出人体辐射的红外线 ,并将其转变为电压信号,同时 ,它还能鉴别出运动的生物与其它非生物.热释电红外传感器既可用于防盗报警装置,也可以用于自动控制、接近开关、遥测等领域. 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：As the era of progress, people to the environment safety put forward higher requirement, many residential installed intelligent alarm system, greatly improving the village, effectively guarantee the safety degree of residents of person property safety. The current domestic use of all kinds of guard against theft, security alarm basic are based on ultrasonic, active infrared emission/receiving and microwave etc. And here the technology as the foundation designed by passive infrared alarm is using Americas sensor - pyroelectric infrared sensor. This kind of pyroelectric infrared sensors to detect the contact form the infrared human radiation, and turned them into voltage signal, meanwhile, it still can identify the movement of the biological and other abiotic. Pyroelectric infrared sensor can be used not only anti-theft alarm device, can also be used for automatic control, promixity switches, telemetry, etc. This system USES a pyroelectric infrared sensor, its make simple, low cost, installation are more convenient and anti-theft performance is stable and strong anti-jamming capability, high sensitivity, safe and reliable. Such devices installed concealment, not easily by rogue found, at the same time it signals through SCM system after processing convenience