黄河科技学院毕业设计说明书第I页汽车智能测距防撞系统设计摘要汽车智能防撞系统具有有效地提高汽车驾乘人员的安全性、显著地减轻驾驶者的工作负担，使驾车既安全又不易疲劳等诸多优点而受到越来越广泛的重视。本次设计设计了一种以单片机AT89C51和CX20106为核心低成本、微型化，并有数字显示和报警功能的汽车智能测距防撞系统。首先，本文概述了超声波和超声波传感器的基本原理和特点。其次，本文分析了系统组成电路的基本工作原理。最后，本文对系统控制软件进行了设计，给出了控制程序。在附录中，本文还将给出一些设计的程序和电路图，供参考之用。关键词：汽车，安全性，测距技术，防撞，超声波黄河科技学院毕业设计说明书第II页TheDesignOfAutomotiveIntelligentRangingcollisionavoidancesystemAbstractAuthot：zhaoleiTutor：dongxuefengAutomotiveradartoimprovethesafetyofvehicleoccupants,andsignificantlyreducetheworkloadofthedriver'sdrivingsafeandeasyfatiguethemanyadvantagesofbeingmoreandmoreattention.InthispaperIdesignakindofAutomotiveIntelligentRangingcollisionavoidancesystemwhichisusemicrocontrollerAT89C51andCX20106ascore.Thisdesignnotonlylowcostandminiaturization,butalsocandisplaynumbersandhavethefunctionofalarm.Atfirst,Iwillintroducethebasicprincipleandcharacteristicsofultrasonicandultrasonicsensors.Thesecond,Iwilldescribetheprincipleofcorecomponentsinthissystem.Atlast,Iwilltalkabouttheprogramdesign.Atthesupplement,Iwillwritesomethinglikeprogramandcircuitdiagram.Itbehelpfulforfuturedesign.Keywords：Cars,safety,distancemeasuringtechnology,anti-collisionradar黄河科技学院毕业设计说明书第III页目录1绪论.........................................................................................................................11.1汽车防撞研究的背景及意义...........................................................................11.2汽车防撞系统的应用.......................................................................................21.3汽车防撞系统的基本功能...............................................................................21.4汽车智能测距防撞的发展前景.......................................................................31.4.1技术支持.................................................................................................31.4.2发展方向.................................................................................................32超声波测距技术.........................................................................................................52.1概述...................................................................................................................52.2测距传感器的分类...........................................................................................52.2.1红外和光电传感器.................................................................................52.2.2超声波测距传感器.................................................................................52.3超声波测距工作原理.......................................................................................73系统方案设计...........................................................................................................103.1设计总体思路概况.........................................................................................103.1.1方案对比...............................................................................................103.1.2系统的特点......................................................................
