基于STc单片机的红外报警设计毕业设计.doc

摘 要 随着社会的进步和科学的发展，人们的工作、生活和通讯、信息的关系日益紧密。信息化社会在改变人们生活方式与工作习惯的同时，也对传统的住宅提出了挑战，社会、技术以及经济的进步更使人们的观念随之巨变。人们对家居的要求早已不只是物理空间，更为关注的是一个安全、方便、舒适的居家环境。 为了创造一个安全的居家环境，报警器便是必不可少的工具。现在市场上主要有压力触发式防盗报警器、开关电子防盗报警器和压力遮光触发式防盗报警器等各种报警器，但这几种比较常见的报警器都存在一些缺点。所以本设计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。 本系统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、驱动执行报警电路等部分组成。处理器采用51系列单片机STC89C51。整个系统是在系统软件控制下工作的。 关键词：红外报警器；STC89C51；单片机；红外传感器 Abstract With the social progress and the development of science, the way people work, live and communications, and information about the relationship between the increasingly close. The information society is changing the way people live and work habits while also traditional residential challenges, social, technological and economic progress to the mindset of the people followed changes. The home has long been not only the physical space, more attention is a safe, convenient and comfortable living environment.In order to create a safe home environment, the alarm is an essential tool. Market pressure triggered the anti-theft alarm, the switching electronic anti-theft alarm and pressure blackout triggered burglar alarm alarm, but several of the more common alarm, there are some drawbacks. This design uses a pyroelectric infrared sensor, it create a simple, low-cost, more convenient to install, and anti-theft performance is relatively stable, strong anti-interference ability, high sensitivity, safe and reliable.The system includes both hardware and software design. The hardware part includes the MCU control circuit, infrared probe circuit to drive the implementation of the alarm circuit parts. The processor uses 51 series microcontroller STC89C51. The whole system is working under the control of the system software. Keywords: infrared alarm; STC89C51; microcontroller; infrared sensor 目 录 1 绪 论 1 1.1 防火防盗报警器概况 1 1.1.1 红外报警器技术的发展 1 1.1.2 红外报警器技术的现状 3 2 基于单片机的报警器的设计方案 4 2.1 方案准备 4 2.2 设计方案 4 2.2.1 总体框图 5 2.2.2 总电路设计........................