人体红外线感应报警器

编号

毕业论文

题目人体红外线感应报警器

学生姓名

学号

系部电子工程系

专业应用电子技术

班级

指导教师

顾问教师【姓名】【专业技术职务】

2012年九月

摘要

该报警器能探测人体发出的红外线，由红外线传感器、信号放大电路、电压比较器、延时电路和音响报警电路等组成。当人进入报警器的监视区域内，即可发出报警声，适用于家庭、办公室、仓库、实验室等比较重要场合防盗报警。概述了红外辐射的知识、热释电红外传感器的结构和工作原理。利用热释电红外传感器设计了一种被动式红外报警电路,分析了该电路的功能和工作原理。热释电红外传感器具有很多的优点,在防盗、警戒等装置中应用较广。

关键词：红外线热释电效应菲涅尔透镜

目录

摘要···········································目录···········································第一章：绪论···········································1.1 设计概述···········································1.2 设计背景···········································1.3 设计要求···········································1.4 设计意义···········································第二章：方案设计与研究···········································2.1 设计过程···········································2.2 方案选定···········································第三章：红外线传感器的概述···········································3.1 红外线传感器···········································3.2 红外线传感器的特点···········································3.3 主要特性···········································第四章：LM358芯片···········································4.1 LM358概述···········································4.2 芯片特点···········································4.3 电气特性···········································4.4 典型电路···········································第五章：LM393芯片···········································5.1 LM393概述···········································5.2 芯片特点···········································5.3 电气特性···········································5.4 典型电路···········································第六章：电路设计···········································6.1 红外线传感器···········································6.2 信号放大电路···········································6.3 电压比较器···········································6.4 音响报警电路···········································6.5 延时电路···········································6.6 12V电源电路···········································6.7 红外线感应报警电路···········································第七章：总结和展望···········································致谢···········································参考文献···········································附表1 元件清单···········································附表2 电路原理图···········································

第一章绪论

1.1设计概述

本设计是在指导老师给定课题的基础上经过分析利用红外线传感器探测人体辐射出的红外线信号原理设计出来的人体红外线感应报警器。内容广泛，灵活应用。课题利用LM386功放、LM393比较强芯片，以及红外线传感器原理设计而成的典型电路。

1.2 设计背景

该报警器能探测人体发出的红外线，当人进入报警器的监视区域内，即可发出报警声，适用于家庭、办公室、仓库、实验室等比较重要场合防盗报警。

1.3 设计要求

1．熟悉电路的工作原理；

2．掌握该电路中元器件的识别方法；

3．掌握电路的调试方法；

4．熟悉电路简单的故障分析方法；

5．论文符合其格式、字数的基本要求，内容要求充实、作图严谨规范等。

1.4 设计意义

加强对一些无人场所的防盗报警，以及对一些危险地带生命迹象的探测。