汽车防盗报警器地设计

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1、摘要本文介绍了本次毕业设计的课题汽车防盗报警器的设计。整个系统的功能是通过检测来实现汽车防盗，当没有振动时，保持预警状态，有振动时就报警。本系统主要包括三个部分的电路：振动检测电路、单片机控制电路、报警电路。振动检测电路的主要功能是：检测汽车是否有振动，当没有振动时，输出保持低电平，当有振动时，检测电路产生数字脉冲信号，送到单片机控制电路。单片机控制电路是整个系统的核心部分，它接收检测电路传来的信号，并通过程序来加以处理和控制报警电路，当它接收到的是低电平时，就保持报警电路关闭状态，当它一旦接收到脉冲信号时就开启报警电路。报警电路主

2、要实现声音和光两种报警。本文首先说明了本次设计所能够采用的方案，接着介绍了芯片的功能及其它器件的特性，例如，AT89S52、振动传感器等。然后描述了该系统的组成及其结构。接下来分析了各个电路及整个系统的工作原理及具体工作过程。最后阐述了调试方法以及电路的改进方案，以确保整个系统更加有效地工作和很好地完成本次设计。关键词：振动检测电路单片机控制电路报警电路振动传感器AbstractThispaperpresentsmytaskofthegraduationdesignindetail,whichisaautomotiveburglar

3、alarm.Themainfunctionofthewholesystemisthatitpretendtheautomativefromstealingthroughtthevibrationtesting.Whenthereisnovibrationitkeepstheearlywarningstats.Whenthereisvibrationitgiveanalarm.Thewholesystemconsistsofthreepartofelectricalcircuit:thevibrationtestelectricalc

4、ircuit,thecontrolelectricalcircuitofthemicrocomputerandthethealarmelectricalcircuit.Themainfunctionofthevibrationtestelectricalcircuitisthattestwhetherthereisvibrationornot.Whenthereisnovibrationitoutputlowerlevel.Whenthereisvibrationitoutputadigitalpulsesignalandsendi

5、ttothecontrolelectricalcircuitofthemicrocomputer.Thecontrolelectricalcircuitofthemicrocomputeristhecoreofthewholesystem.Ittakeoverthesignalsendingfromthevibrationtestelectricalcircuitandthendealitwiththeprogrammeandcontrolthealarmelectricalcircuit.Whenthesignalittakeov

6、eristhelowerlevelitkeepsthealarmelectricalcircuitoff.Whenthesignalisthedigitalpulseoneitturnthealarmelectricalcircuiton.Thealarmelectricalcircuitconsistsofthevoicealarmelectricalcircuitandthelightone.FirstthethesisexplaintheprojectIcantake,thenitintroducethefunctionoft

7、hechipandtheotherpartsofapparatus.ForexampleAT89S52andthevibrationsensor.Afterthatitdescribethestructureofthesystemandthenitanalysethebasicprincipleofeveryelectricalcircuitandthewholeone.Atlastitexpoundthewayoftestingandthemodifiedprojectinordertoensurethatthewholesyst

8、emworkseffectiveandIcanfinishthisdesignsuccessfully.KEYWORDS:thevibrationtestelectricalcircuitthecontrolelectricalcir