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1、沈阳理工大学学士学位论文摘要随着现代科技术的进步,公路交通呈现出行驶高速化、车流密集化的趋势。同时,随着汽车工业的飞速发展,汽车的产量和保有量都在急剧增加。但公路发展、交通管理相对落后,导致了交通事故与日俱增,城市交通拥堵成为城市管理的难题。本设计在汽车前端放置超声波检测装置,通过对前方汽车车距的检测,送到中心控制器作出判断,进行车辆车速控制,从而达到车辆主动安全行驶,避免不必要的碰撞。设计利用智能小车来模拟真实车辆行驶环境,采用红外对管检测黑线实现循迹,超声波传感器测距实现避障,采用MSP430G2553作为主控制芯片,
2、电动车电机驱动采用L298N芯片,根据内置的程序分别控制小车四个直流电机运转,实现小车自动识别路线循迹行驶,能较有效的控制其在碰上障碍物时能及时停车。本设计结构简单,较容易实现,具有一定的智能性。这个系统安装在汽车上,能探测车辆前方的行人、车辆或周围障碍物,能向司机提前发出即将发生撞车危险的信号,促使司机采取应急措施来应付特殊险情,避免损失,在日常交通环境中提高了车辆行驶安全性,具有一定的市场推广价值。关键词:智能小车;msp430单片机;L298N;超声波传感器;红外传感器AbstractIII沈阳理工大学学士学位论文A
3、longwiththeprogressofmodernscienceandtechnology,thetrendofhighwaytransportationisthetrendofhighspeedandtrafficflow..Atthesametime,withtherapiddevelopmentoftheautomobileindustry,theoutputandthequantityoftheautomobileareincreasingsharply..However,thedevelopmentofhig
4、hway,trafficmanagementisrelativelybackward,resultinginthetrafficaccidentgrowing,urbantrafficcongestionbecomethecitymanagementproblems.Thedesignatthefrontendofthecarplacedultrasonicdetectiondevice,throughthedistancetothefrontvehicledetection,senttothecentralcontrol
5、lertojudge,vehiclespeedcontrol,soastoachievevehicleactivesafetydriving,avoidunnecessarycollision.Designusingthesmartcartosimulatetherealvehicledrivingenvironment,usinginfraredtodetectblacklinepipetoachievethetracking,ultrasonicrangingsensortoachieveobstacleavoidan
6、ceandthemsp430g2553asthemaincontrolchip,motordriveusingL298Nchip,built-inproceduresaccordingtorespectivelycontrolcarfourDCmotorrunning,achieveautomaticcaridentificationroutetrackingdriving,canmoreeffectivelycontroltherunintoobstaclescanstopintime.Thisdesignissimpl
7、eandeasytoachieve,withacertainintelligence.Thesystemwasinstalledinthecar,candetectvehiclesinfrontofthepedestrians,vehicles,oraroundobstacles.,tothedriverinadvancefromtheimpendingcollisiondangersignal,tourgethedrivertotakeemergencymeasurestocopewiththespecialdanger
8、,avoidlosses,indailytrafficenvironmentimprovesthevehicledrivingsafety,hasacertainmarketpopularizationvalue.Keywords:Intelligentcar;MSP430microcontroller