5、rolledbyAT89S52single-chipmicrocomputer.Itusesinfraredtubetodetecttheblackguidelineontherunningtracksoastorealizethetracingfunction,anditusesultrasonicmoduletodetectobstacleavoidance.TherearwheelsofthecararedrivedbyDCmotorandthefrontwheelsofthecararecontrolledbyasteering motor