保密类别编号本科毕业论文智能小车院(系)别(小二号宋体居中)专业班级姓名学号指导教师中国传媒大学南广学院2013年4月9日摘要1请填写标准的专业名称如:广播电视工程请填写规范的班级名称如:09广电随着科技的日益发展,人们对汽车的要求越来越高,在市场的不断需求下,新型的多功能小汽车应用技术越来越成熟,同时也推动着汽车智能化的发展。智能汽车与一般所说的自动驾驶有所不同,它指的是利用多种传感器和智能公路技术实现的汽车自动驾驶,智能车辆可以识别周围环境、自动判断、多功能驾驶等集成众多驾驶技术的综合系统,它把计算机技术、传感器技术、信息技术、通讯技术、智能机器识别以及自动化等技术,应用了各种新型的技术。目前,智能车辆主要朝着安全、舒适,和提供优良的车人、人车交换系统。本次设计的智能循迹小车主要以单片机89S52为控制核心,实现自动循迹、避障以及手机遥控。循迹电路采用4路红外光电发射对管,并采用L298作为电机的驱动芯片,并在四位数码管上显示实时路径,完成循迹功能。当不能循迹时,可以采用手机远程进行遥控。当小车避障传感器检测到车的前方有障碍物时,会自动停止运行,并发出报警声。关键字:循迹小车;89S52;L298;电机驱动ABSTRACTAlongwiththedevelopmentofscienceandtechnology,peopleonthecardemandishigherandhigher,inthemarketcontinueddemand,thenewtypeofmulti-functioncarapplicationtechnologyismoreandmoremature,butalsopromotethe2developmentofintelligent,thecar.Smartcarsandgeneralhadsaidtobeautomaticdrivingdifferent,itreferstotheuseofsensorandintelligentroadtechnologyoftherealizationoftheautomaticcardriving,intelligentvehicleisacollectionofenvironmentplanninganddecision-making,perception,differentfunctionssuchasauxiliarydrivinginanintegratedsystem,itfocusesonthecomputer,usingmodernsensor,informationfusion,communication,artificialintelligenceandautomaticcontroltechnology,istypicalofhigh-techcomplex.Atpresentthestudiesofintelligentvehicleismainlydevotedtoimprovethecar'ssafety,comfort,andprovidegoodcarinterface.Thisdesignintelligenttracingthecaronmainonthesinglechipcomputer89S52ascontrolcore,with4roadelectrcaltolaunchtube,andbyusingtheL298asthemotordrivechip,andinthefourdigitaltubedisplayreal-timepath,completethefollowingmarkfunction.Keywords:trackingcar,89S52,L298,Motordrive目录一、绪论............................................................4二、硬件电路设计....................................................52.1硬件设计总体框图................................................52.2电源电路设计....................................................62.2.1电源电路设计原理..........................................632.2.2AMS1117-5.0简介..........................................72.3单片机最小系统..................................................82.3.1控制电路分析..............................................82.3.2单片机最小系统分析........................................82.3.3AT89S52单片机简介........................................92.4电机驱动.......................................................102.4.1驱动电路设计.............................................102.4.2LM298内部结构...........................................112.4.3H桥电机驱动电路.........................................112.5循迹电路.......................................................132.5.1循迹电路设计.............................................132.5.2光电传感器ST178简介.....................................142.5.3LM339简介...............................................142.6数码管显示电路.................................................152.6.1实时显示状...