超声波倒车雷达系统硬件设计郑州轻院轻工职业学院专科毕业设计（论文）超声波倒车雷达系统硬件设计题目超声波倒车雷达系统硬件设计学生姓名专业班级学号院（系）机电工程系指导教师(职称)完成时间2017年05月01日III超声波倒车雷达系统硬件设计超声波倒车雷达系统的设计摘要基于超声波测距的汽车倒车雷达系统是在充分理解了超声波测距原理的基础上提出的。工作时，超声波传感器发出脉冲信号，经障碍物反射后由超声波接收装置接收并送至单片机处理，可实现倒车时障碍物距离的实时监测并通过语音报警提示驾驶员。本设计是以AT89C51单片机为主控制器的超声波倒车雷达系统，包括超声波发射和接收部分单片机处理部分、LCD显示部分和语音报警部分等硬件系统以及软件程序设计。关键词倒车雷达/单片机控制/超声波测距DesignofUltrasonicReversingRadarSystemAbstractBasedontheultrasonicdistancemeasurementprinciple,thistextputforwardadesignschemeofcarreversingradarsystembasedonultrasonicdistancemeasurement.Ultrasonicsensorsendsapulsesignalwhenitisworking,andtheultrasonicreceivingdecivesendthereflectedsignalbytheobstacletotheMCU,thissystemcouldachieveReal-timemonitoringoftheObstacledistancewhenreversingandpromptthedriverbyvoicealarm.TheoveralldesignofultrasonicreversingradarsystembasedontheAT89C51singlechipasmaincontrollerwasdetailedintroduced,includeUltrasonictransmittingandreceivingpart,MCUprocessingpart,displaybyLCD,VoiceAlarmpartanditsprogramminginthesoftware.KeywordsReversingradar，singlechipmicroprocessor，ultrasonicdistancemeasurement4超声波倒车雷达系统硬件设计目录中文摘要英文摘要1引言......................................................11.1设计主要内容........................................................................................................12系统的总体设计方案及理论基础.......................................................................12.1总体设计方案...................................................12.2超声波测距理论分析.............................................22.2.1超声波测距原理..............................................22.3超声波传感器...................................................32.3.1超声波传感器的原理及结构...........................................32.3.2超声波传感器的应用.................................................42.2.3超声波传感器的主要性能指标.........................................43系统的硬件设计...................................................53.1单片机主控系统电路设计.........................................53.1.1单片机选择.........................................................53.1.2电源电路...........................................................63.1.3复位电路...........................................................63.1.4时钟电路...........................................................73.2超声波发射电路.................................................73.3超声波检测接收电路.............................................93.3.1集成电路CX20106A...................................................93.3.2超声波接收电路....................................................103.4数码管显示模块................................................104系统的软件设计..................................................114.1软件设计的要求................................................114.2主程序设计....................................................124.3超声波测距模块设计............................................124.3.2超声波发送和接收程序.......................................135主程序................
