儿童反锁汽车内报警器的设计

安徽工程大学机电学院毕业设计（论文）I毕业设计(论文)题目：儿童反锁汽车内报警器的设计课题类型:设计□√实验研究论文学生姓名:马明明学号:312107020223专业班级:电子信息工程2122班学院:信息工程系指导教师:郎璐红提交时间：2016年4月24日马明明：儿童反锁汽车内报警器的设计II儿童反锁汽车内报警器的设计摘要随着经济的快速发展，汽车已经进入千家万户。我们在享受汽车带来方便的同时不能忽略了汽车存在的一些安全问题。近些年来，由于一些驾驶员的粗心，下车后会把儿童长时间遗忘在车内，对孩子的身心造成伤害。本课题用AT89C51单片机作为主要控制芯片，当驾驶员下车车门锁死后，应用被动红外探测器自动检测是否有儿童在车内，如果车内有儿童，则利用无线通信模块发送报警信号给驾驶员。在设计本课题的时候，我觉得AT89C51单片机虽然是最基础的单片机，但是它的功能也很强大，基本的实现了要完成的工作。被动式红外探测器是根据人体有恒定的体温，与周围环境温度存在差别，这种差别的变化通过菲涅尔透镜被热释电传感器检测到，从而输出报警信号。被动式红外探测器多用在家庭防盗等方面。该设计主要由传感器模块、控制电路模块以及无线通信模块三部分组成。本设计涉及到的热成像技术、传感器技术都已经发展成熟，实践证明其具有很高的可靠性。同时，该系统从多个角度出发，充分考虑可能引发事故的各种因素，确保儿童不会被长时间单独留在车内，保证儿童的安全。关键词：报警器；单片机；红外探测器；无线通信模块安徽工程大学机电学院毕业设计（论文）IIITheDesignofChildrenLockedinACarAlarmAbstractWiththerapiddevelopmentofeconomy,thecarhasenteredinnumberablefamilies.Weareenjoyingcarsbringconvenientatthesametimecan'tignoresomesecurityproblemsofthecar.Inrecentyears,duetosomeofthedriver'scarelessness,getoffafterthechildrenforalongtimetoforgetinthecar,tothechild'sphysicalandmentaldamage.ThistopicusingAT89C51singlechipmicrocomputerasmaincontrolchip,whenthedriveroutofthecardoorlock,applicationofpassiveinfrareddetectorsautomaticallydetectwhethertherearechildreninthecar,ifthecarhaschildren,withthewirelesscommunicationmoduletosendalarmsignaltothedriver.Inthedesignofthistopic,IthinkalthoughAT89C51isthefoundationofsinglechipmicrocomputer,butitsfunctionisverystrongalso,basicimplementationoftheworktobedone.Passiveinfrareddetectorisbasedonthehumanbodyhasaconstantbodytemperature,temperaturedifferenceexistswiththesurroundingenvironment,thechangeofthedifferencebyFresnellenshasbeendetectedbythepyroelectricsensor,thustheoutputalarmsignal.Passiveinfrareddetectorsuseinthehomeguardagainsttheft,etc.Thisdesignismainlyperformedbythesensormodule,acontrolcircuitmoduleandfunctionmoduleofthreeparts.Thisdesigninvolvesthethermalimagingtechnology,sensortechnologyhasbeenmature,practiceshowsthatithashighreliability.Atthesametime,thesystemfrommultipleangles,fullyconsideringthefactorsthatmaycauseaccidents,toensurethatthechildrenwillnotbealoneforalongtimestayinthecar,toensurethesafetyofchildren.Keywords:alarm;Singlechipmicrocomputer;Infrareddetector;Wirelesscommunicationmodule马明明：儿童反锁汽车内报警器的设计IV目录引言........................................................................................................................................................-1-绪论........................................................................................................................................................-2-第1章设计内容...........................................................................................................................................-3-1.1设计任务........................................................................................................................................-3-1.2题目评析........................................................................................................................................-3-第2章系统总体方案....................................................................................................................................-5-2.1方案选择........................................................................................................................................-5-2.2方案论证.........................................................................................................................................-5-第3章系统硬件设计...............................................................................................................................-6-3.1系统的总体方案设计.................................................................................................................-6-3.2硬件模块的设计.........................................................................................................................-6-3.2.1被动式红外报警器的设计.............................................................................................-6-3.2.2无线通信模块的设计.....................................................................................................-8-3.2.3单片机的设计.................................................................................................................-9-3.2.4放大电路的设计...........................................................................................................-10-3.2.5时钟电路的设计...........................................................................................................-11-3.2.6复位电路的设计............................................................................................................-11-第4章软件的程序实现.........................................................................................................................-13-4.1主程序工作流程图...................................................................................................................-13-4.2设计编程程序............................................................................................................................-13-第5章原理图仿真...........................................................................