汽车防盗报警器的设计作者姓名:王朝秀专业班级:电子信息科学与技术2003050203指导老师:于真摘要随着汽车数量增多，盗窃汽车的犯罪案件与日俱增，且车辆被盗的数量逐年上升，为了防止汽车被盗，给汽车装上防盗报警系统实有必要。对此提出了一种汽车防盗报警器的设计方案。本论文介绍了一种制作容易、性价比高、实用性强的防盗报警器。在本设计中，用红外遥控器控制报警系统电源的通断，避免车主进入室内产生误报警采用现在普遍应用于报警器中的热释电红外线传感器进行盗情信号的检测；用当今最流行的AT89C2051单片机控制，体积小、成本低。此报警器处于警戒状态下，发生盗窃时，传感器将检测到的信号送到单片机，经单片机分析处理产生声光报警，并且切断汽车点火线圈电源使汽车无法启动。关键字:红外遥控、热释电红外传感器、AT89C2051单片机、声光报警TheDesignOfCarWarningSystemGuardingAgainstTheftAbstract:Asthequantityofpersonalautomobileincreases,casesofstealingcarsrisedaybyday,causingthelostofautomobilegoesrighttowardthepeak,topreventthevehiclesfrombeingtakenrobbed,ananti-theftsystemincludingalarmingmoduleisabsolutelynecessaryforeverysingleautomobile.Thereforeanewschemeofanti-theftandwarningsystemforvehiclesisannounced.Inthisthesis,ananti-theftalarmsystemwithfeaturesofhighperformance-to-priceratio,mucheasiermanufactureprocedureandgreatpracticalusagesisintroduced.Inthisdesign,inferredremotecontrollerisinchargeofcontrolalarmsystempowersourcesupply,toavoidthecarownertriggersthewarningbymistake.Insensingmodule,thepyroelectricinferredsensorisselectedfordetectingsignalsofstealing;AndthemostpopularmicrocontrollerAT89C2051whichhassmallvolumeandlowcostisused.Whenthewholesystemisinguardingstatus,andstealingbehaviorhasbeendetected,sensingmodulewillsendthedetectedsignaltothemicrocontroller.Afterprocessingbythemicrocontroller,soundandlightwarningwillbeactivated.Andthevehiclewillnotbefiredanywaybecausetheautomobileignitioncoilpowersourcewillbecutoffatthesametime.Keyword:InferredRemoteControl,PyroelectricInferredSensor,MicrocontrollerAT89C2051,SoundAndLightAlarm目录第1章前言........................................................11.1选题背景......................................................11.2全球汽车防盗报警器的现状.......................................11.3本论文的主要工作..............................................2第2章汽车防盗报警器的总体方案设计.................................32.1方案设计要求..................................................32.2系统方案设计...................................................3第3章汽车防盗报警系器的硬件设计...................................43.1红外遥控发射器................................................43.1.1振荡器....................................................43.1.2红外遥控发射器的原理图....................................53.2防盗报警系统的电源电路........................................63.3红外遥控接收及控制电路........................................73.3.1锁相环单音频率译码集成电路(LM567).........................83.3.2锁存器....................................................93.3.3继电器的工作原理和特性....................................93.3.4红外遥控接收和控制电路工作原理...........................113.4利用热释电红外传感器实现对汽车的监测.........................123.4.1红外线...................................................123.4.2热释电红外线传感器.......................................133.4.3热释电红外线传感器工作原理...............................133.4.4热释电红外传感器对汽车的检测...
