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本科学生毕业设计基于单片机的汽车轮胎胎压监测系统的设计与实现系部名称：汽车与交通工程学院专业班级：车辆工程学生姓名：指导教师：职称：副教授TheGraduationDesignforBachelor'sDegreeDesignandImplemtationofTirePressureDetectionSystembasedonSCMCandidate：ZhangLongfeiSpecialty：VehicleengineeringClass：07-8Supervisor：AssociateProf.FanDehuiHeilongjiangInstituteofTechnologyI摘要随着社会经济和科学技术的发展，公路交通已经成为关系国民经济命脉和社会、经济发展的重大系统，但随之而来的交通事故给人的生命安全和经济发展造成了重大损失。爆胎是引起交通事故的主要原因，保持标准的车胎气压行驶是防止爆胎的关键，胎压检测系统(TPMS)是由此应运而生的一项汽车安全防范系统。胎压检测系统主要用于汽车行驶过程中对汽车胎压与温度的实时检测，当出现异常状态时进行报警，从而保障驾乘者的行车安全。本课题研究的目的是开发一种用于机动车辆上的无线胎压检测系统。本文提出了一种基于无线技术的胎压检测系统方案，给出了系统总体结构框图，阐述了系统硬件电路和各模块软件的设计方法。硬件设计综合运用了检测技术、单片机技术及无线通信技术，其中发射模块能实时检测、处理轮胎的压力和温度参数，并运用无线方式将处理后的数据传输到接收模块；接收模块能校验数据并显示结果，用以告知驾驶员各个轮胎的情况。软件设计包括发射模块和接收模块两部分，具体为发射模块和接收模块的初始化、数据测量及处理，发射及接收程序。关键词：胎压检测系统；无线通信技术；传感器；射频收发；C语言IIABSTRACTWiththesocio．economicandscienceandtechnologydevelopment，roadtraffichasbecomethemajorsystemofthenationaleconomyandthesocial，economicdevelopment，however,trafficaccidentsfollowingresultedinsignificantlossesaboutthelivesandsafetyofpeopleandeconomicdevelopment．Punctureisthemaincauseoftrafficaccidents，keepdrivinginstandardstirepressureisthekeytopreventpuncture，Tirepressuredetectionsystem(TPMS)whichbomasacarsecuritysystem．Tirepressuremonitoringsystemismainlyusedforreal-timetirepressureandtemperaturemonitoringintheprocessofdrivingtoprotecttheoccupantsofthedrivingsafetywhentheabnormalstateofalarm．ThepurposeofthisresearchistodevelopawirelessRFtransmissiontirepressuremonitoringsystemwhichusedinmotorvehicle．Thispaperproposedawirelesstechnologybasedonthefirepressuremonitoringsystemsprograms，gavetheoverallsystemdesignblockdiagramandexplainthesystemhardwarecircuitdesignandsoftwaredesignofthemodules．Hardwarecircuitmainlyusessensordetectiontechnology,single-chiptechnologyandwirelesscommunicationtechnology,transmittermodulecandetect，dealwiththetirepressureandtemperatureparametersreal—time，andtransmitteddataprocessedtothereceivermoduleusethewayofwireless．Receivermodulecailcalibrationdataanddisplaytheresulttoinformthedriverofthesituationofalltires．Softwaredesigncontainstransmittermoduleandreceivermodule，specificfortransmittermoduleandreceivermoduleinitialization，datameasurementandprocessing，sendandreceiveprocedures．Keywords：tirepressuremonitoringsystem，wirelesscommunicationtechnologysensor,anti-jamming，RFtransceiver，Clanguage目录摘要......................................................................................................................................IABSTRACT....................................................................................................................................II第1章绪论......................................................................................................................11.1选题的背景...........................................................................................................................11.2课题的目的及意义..............................................................................................................31.3课题主要工作......................................................................................................................4第2章系统整体方案设计.....................................................................................52.1系统设计要求......................................................................................................................52.2系统设计方案......................................................................................................................52.2.2发射模块.......................................................................................................................62.2.2接收模块.......................................................................................................................62.3元器件选择..........................................................................................................................62.4关键技术研究......................................................................................................................72.4.1频率选择.......................................................................................................................72.4.2信号编码方式...............................................................................................................72.4.3轮胎定位技术...............................................................................................................82.5本章小结..............................................................................................................................8第3章发射模块的设计........................................................................................................93.1传感器单元的硬件电路设计...............................................................................................93.1.1DS18B20工作方式.......................................................................................................93.1.2ADC0809工作方式.....................................................................................................103.1.3DS18B20温度检测程序............................................