汽车智能刹车系统设计摘要

新型汽车电子单元电路（实验）设计报告汽车智能刹车系统设计摘要：近年来，我国道路交通安全形式越来越严峻，如果能够在事故发生前提醒驾驶员并采取一定的安全措施，对减少交通事故的发生是非常有用的，汽车智能刹车系统设计正是基于提高车辆的安全性来实现在行车过程中给汽车驾驶员提供的必要技术设施。本设计介绍了单片机AT89C51的性能及特点，及以其为核心的一种低成本、高精度、微型化、数字显示的汽车防撞报警器。该防撞报警系统利用超声波及集成霍尔元件实现对汽车的测距和测速，由单片机把测量车距与预先设定的安全车距和车速进行比较。当汽车车速一定的情况下，车距不是安全车距时，单片机就控制汽车刹车系统刹车。否则，就不作处理。从而利用单片机实时控制和数据处理功能，完成整个系统的控制。关键字：单片机，超声波，霍尔元件，安全车距，智能刹车Abstract:Inrecentyears,moreandmoresevereformsofroadtrafficsafety,ifwecanalertthedriverbeforetheaccidentandtotakecertainsafetymeasurestoreducetrafficaccidentsisveryuseful,intelligentvehiclebrakesystemdesignisbasedonenhancingvehicletoachievethesecurityprocessindrivingthecarthedrivertoprovidethenecessarytechnicalfacilities.ThisdesigndescribestheperformanceandcharacteristicsofAT89C51microcontrolleranditscoreofalow-cost,highprecision,miniature,figuresshowthatcarcollisionalarm.ThecollisionwarningsystemusingultrasoundandintegratedHallelementtoachievethedistanceandspeedofvehiclesbythemicrocontrollertomeasurethedistancefromthevehicleandthepre-setsafedistancebetweenvehiclesandthespeedcomparison.Whenthevehiclespeedincertaincircumstances,thecarisnotfromthesafedistancebetweenvehicles,theMCUtocontrolvehiclebrakingsystembrakes.Otherwise,itwillnotbeprocessed.Totakeadvantageofsinglechipreal-timecontrolanddataprocessingfunctions,completecontrolofthewholesystem.Keywords:Microcontroller,ultrasonic,Hallelement,thesafetydistancebetweenvehicles,intelligentbrake