基于单片机的家庭防火防盗系统_毕业设计论文.doc

长春工业大学人文信息学院毕业设计（论文） 信息工程系 PAGE 2 PAGE 18 长 春 工 业 大 学 毕业设计、毕业论文 题 目 基于单片机的家庭 防火防盗系统 学 校 长春工业大学人文信息学院 专业班级 电子信息工程 090311班 2013年 月 日 长春工业大学人文信息学院毕业设计（论文） 信息工程系 PAGE I 摘 要 目前市面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。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。 本设计主要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、红外检测电路、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AT89S51。整个系统是在系统软件控制下工作的。软件部分可以划分为以下几个模块：数据采集、键盘控制、报警和显示等子函数。 关键词 单片机 红外传感器 数据采集 报警电路 Abstract Nowadays, there are many kinds of alarms, such as Pressure trigger anti-theft alarm, Switch electronic anti-theft alarm, Stress shielding trigger anti-theft alarm, which are the most popular in the market. However, all of these quite common alarms apparatuses have several shortcomings. This system used has hotly released the electricity infrared sensor, its manufacture simple，cost low, installs the antijamming ability strong, the sensitivity high, safe was reliable. This kind of security installment hiding, was not easily discovered by the bandits and thieves. Simultaneously its signal after monolithic integrated circuit system processing the convenience and P the C machine correspondence, is advantageous for the multiuser unification management. This design designs two parts including the hardware and software. The hardware partially including the monolithic integrated circuit control circuit, infrared pokes head in the electric circuit, the actuation execution alarm circuit, the LED control circuit and so on the partial compositions. The processor uses 51 series monolithic integrated circuits AT89S51, the overall system is works under the system software control. For certain of these system programs can be divided into several modules as following: Da