红外线传感器毕业论文.doc

南京工程高等职业学校 五年制高职毕业设计 姓 名： 学 号： 系 部： 电子工程系 专 业： 电气自动化技术　 设计题目： 红外报警器的设计 指导教师： 职 称： 讲师 2015年3月 南 京 摘 要 随着现在社会的发展，时代进步，高新技术的快速融入，人们的生活发生了巨大的改变，人们置购了大量高新技术的产品，许多高科技产品的使用越来越成为家庭生活的主旋律，因此人们对自己所处环境的安全要求就越来越高，特别是家居安全，不得不时刻留意不速之客的光顾。现在许多小区都有着保安看管，但在一些农村就没有这些设施了，于是，许多家庭都安装了报警系统，这有效的保护了大家的财产安全。在本文中，介绍一种利用热释电红外传感器进行监控，并进行报警的系统的设计。 该报警器主要由热释电红外传感器及其检测电路，报警电路组成。热释电红外传感器是报警器设计中的核心器件，它可把人体的红外信号转换为电信号以供信号处理部分使用。检测电路主要是把传感器输出的微弱电信号进行放大、滤波、延迟、比较，从而实现报警功能。 关键词：红外线；感应器；电压比较器；放大电路；热释电报警器 Abstract With the development of modern society, the progress of the times, the rapid integration into the high-tech, tremendous changes have taken place in peoples life, people for the purchase of a large number of high-tech products, the use of many high-tech products increasingly become the main theme of family life, so people on the safety requirements of their environment is more and more high, especially is Home Furnishing security, had to be constantly pay attention to the casual visitor to patronize. Now many areas have a security guard, but in some rural areas without these facilities, so, many families have installed an alarm system, the effective protection of all property safety. In this paper, introduces a monitoring using pyroelectric infrared sensor, design and alarm system. The alarm is mainly composed of a pyroelectric infrared sensor and its detection circuit, alarm circuit. Pyroelectric infrared sensor is the key device for alarm design, it can convert infrared signal of human body to the electric signal for the signal processing part of the use of. The detection circuit is mainly to weak electrical signal sensor output amplification, filtering, delay, comparison, so as to achieve the alarm function. Keywords: Infrared sensor；voltage comparator；amplifier circuit；the heat release alarm 目 录 1.绪论.........................