声控报警器设计.docx

学 年 论 文题 目 声控报警器姓 名 程 艳 敏所在学院 安徽城市管理职业学院专业班级 08 届应用电子学 号 0817027指导教师 陈 芳日 期 2010年 10月 26日安徽城市管理职业学院 2008 届应用电子技术专业学年论文声控报警器摘要：在当今社会上防盗系统越来越受到人们的重视但是市场上的报警器大部分都是用于一些大公司财政机构价格高昂 , 一般人们难以接受如果再设计和生产一种价廉、性能灵敏可靠的防盗报警器，必将在防盗和保证财产安全方面发挥更加有效的作用本课程主要介绍了简易的声控报警器的电路设计和电路板的制作以此电路为依据只需更换相应的报警显示元件即可改装成不同类型的报警器，如红外报警器 , 红外线声先报警器等这种电路主要由声控放大电路、单稳态触发器电路、报警电路组成，设计利用压电陶瓷片作为声传感器获得信号并将其转换为电压信号，经场效应管放大后触发由 NE555 集成芯片构成的单稳态触发器和多谐振荡器 , 输出电压驱动蜂鸣器工作经过调试，实现课程要求关键字：场效应管 VT66 ； NE555 ；单稳态触发器；多谐振荡器安徽城市管理职业学院 2008 届应用电子技术专业学年论文Voice-activated alarmAbstract ：Today people pay more and more attention on anti-theft system. But the alarm on the market most of which are used in some large financial institutions. The high price of general is difficult to accept. If we can design and manufacture a kind of cheap and reliable performance of sensitive anti-theft alarm, that will guarantee the security and property security to play a more effective role. This course introducesthe simple voice-activated alarm circuit design and circuit board production. Based on this circuit only shows the replacement of the corresponding components of the alarm can be converted into different types of alarms, such as infrared detectors, and the infrared detectors sound first. This circuit mainly by the voice amplifier circuit, monostable multivibrator circuit, alarm circuit, the design of the use of piezoelectric ceramics as a sound sensor and the signal was converted to voltage signals, amplified by the FET integrated triggered by NE555 chip consisting of monostable multivibrator and multi-harmonic oscillator, buzzer driver output voltage work. After commissioning, it’s founcation will mach the course s’requirements.Key words: C9013;NE555;One-shot;Astable Multivibrator目录安徽城市管理职业学院 2008 届应用电子技术专业学年论文前言 ..................................................................................................................................................1第 1 章设计任务要求及方案论证选择..................................................................................2第 2章系统框图......................................................................................................................3第 3章电路原理图及工作原理 ....................................................................................................43.1原理图...............................................................................................................................43.2声音的采集放大 ...............................................................................................................53.2.1传感器的介绍 1 、传感器的定义 .....................................................................53.2.2场效应管放大电路............................................................................................83.3时钟信号产生电路 .........................................................................................................123.3.1NE555....................................................................................................................123.3.2 NE555构成单稳态触发电路 .............................................................................143.3.3 NE555构成的多谐振荡电路 .............................................................................18第 4章 电路板的组装..................................................................................................................214.1电路板的制作过程 .........................................................................................................21第 5章电路的调试 ......................................................................................................................225.1调试方法过程.................................................................................................................225.2防盗报警器误报的分析及解决方法.............................................................................22谢辞 ................................................................................................................................................24参考文献 ........................................................................................................................................25前言近年来，随着改革开放的深入发展，电子电器的飞速发展 . 人民的生活水平有了很大提高。

各种高档家电产品和贵重物品为许多家庭所拥有然而一些不法分子也是越来越多这点就是看到了大部分人防盗意识还不够强 . 造成偷盗现象屡见不鲜因此，越来越多的居民家庭对财产安全问题十分担忧报警器这时正为人们解决了不少问题 . 但是市场上的报警器大部分都是用于一些大公司财政机构价格高昂 , 一般人们难以接受如果再设计和生产一种价廉、性能灵敏可靠的防盗报警器，必将在防盗和保证财产安全方面发挥更加有效的作用由于声控报警器体积小，灵敏度高具有很强的。