利用51单片机来驱动和控制小车智能寻迹，可上坡，走直线曲线转弯等等，触碰到障碍物后会自动转身并发出使蜂鸣器发声，然后继续自动寻迹，一般可用于单片机智能小车寻迹比赛-The use of 51 single-chip smart car to drive and control the tracing can be uphill, walk straight curve turns, etc., will automatically turn around and send the buzzer