红外报警器的设计与仿真毕业设计
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重庆邮电大学
毕业设计(论文)
设计(论文)题目: 红外报警器的设计与仿真
学 院 名 称 : 通信学院
学 生 姓 名 : 江运涛
专 业 : 电子信息与工程(通信技术)
班 级 : 2012级
学 号 : 2012216444
指 导 教 师 : 冯志宇
答辩组 负责人 :
填表时间: 2016年 5 月
重庆邮电大学教务处制重庆邮电大学本科毕业设计(论文)
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摘 要
红外感应无论从线路技术还是元器件方面,乃至于思想认识上都取得了长足的进步。在当今的社会红外感应在诸多领域都得到了应用。如红外报警器、红外数据传输器、红外夜视仪等方面。所以设计一个简易红外报警器有利于我们对红外传输技术有所了解。
红外报警器可以分为两种。一种是主动式红外报警器,它主要是通过报警器发出红外线来触碰障碍物然后被反弹来接收信息。如果有物体触碰到红外线,探头就会出现异常然后就会报警,这就是主动式红外报警器。而另一种是被动式红外报警器,与主动式红外报警器相比,它少了一项功能,即是不会发出红外线。从物理学上我们可以了解到,如果物体的温度大于0度时就会发出红外线,也就是说任何物体都可以发出红外线。而后面的原理,被动式与主动式是一样的。红外报警器对温度是非常敏感的,物体的温度越高,则它所辐射出来的红外线就会越强,当探头检测到高强度的红外线时就会发出报警,当然少数情况下也会出现误警的情况。通过查阅资料,本次设计选择针对主动式红外警报器进行仿真设计。
本次设计简易红外报警器的内容是:设计符合要求的电路原理图,对三极管构成无稳态振荡电路、红外收发电路自锁驱动与复位电路及三极管构成无稳态振荡声光电路的各个元件的参数静态工作点进行分析计算,用Multisim软件制作出电路原理图,并进行仿真得出结果。若有故障,则利用已有的故障维修思路和方法进行检修使其能正常工作,达到合格的标准。
【关键词】红外报警器 Multisim 防盗报警 STC89C51单片机
重庆邮电大学本科毕业设计(论文)
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ABSTRACT
Whether from the line technology or components, the thinking and
understanding and even have made considerable progress. In today's society
infrared sensors in many fields it has been applied. Such as infrared alarm, infrared
data transmission, infrared night vision and other aspects. So the design of a simple
infrared alarm system will help us understand infrared transmission technology.
The simple design of infrared alarm contents is: designed to meet the
requirements of the circuit diagram of the transistors constituting the
non-steady-state oscillation circuit, infrared transceiver circuit self-locking drive
and reset circuit and transistor constituting each element astable oscillator circuit of
sound and light quiescent operating point parameters analyzed and calculated to
produce a circuit diagram with Altium Multisim software, and simulation. If it fails,
the use of existing fault repair ideas and methods for maintenance so that it can
work to achieve the qualifying standard. I learned a lot in the design, transistors
constituting the self-locking drive and ask reset circuit and transistors constituting
the astable oscillating circuit schematic structure of new theoretical knowledge,
review the consolidation of the previous circuits, analog electronics, and modern
electronic circuits technical and other knowledge. Also better integrate theory with
practice, the relevant new and old knowledge to design yourself a finished design.
Infrared alarm action is the signal transmitted from the transmitting end through the
air receiving side has received, in this process due to the effect of the external body
rather hinder the transfer signal as the trigger an alarm signal. As the electron sticks
graduation, the subject of the proposed infrared radio alarm indicators is relatively
low, and the reality of reason and practicality disturbances such as DC-powered
infrared generating circuit occurs. Because of the limited personal level, this design
shortcomings and mistakes are inevitable, ask forgiveness!
【Key words】Infrared alarm Burglar alarm Multisim STC89C51
重庆邮电大学本科毕业设计(论文)
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目 录
前 言......................................................................................................................... 1
第一章 绪论............................................................................................................... 2
第一节 电子电路概述........................................................................................ 2
第二节 红外报警器概述.................................................................................... 2
一、红外报警器工作原理........................................................................... 2
二、红外报警器的功能............................................................................... 4
第三节 本课题研究的基本内容及方法.......................................................... 4
一、研究的基本内容................................................................................... 4
二、研究的方法........................................................................................... 4
第四节 本章小结.............................................................................................. 5
第二章 Multisim仿真软件概述 ............................................................................. 6
第一节 Multisim简介 ........................................................................................ 6
一、EDA ...................................................................................................... 6
二、Multisim软件的特点 ........................................................................... 6
三、Multisim 9 ............................................................................................. 7