四路红外探测传感器模块是用来检测黑线或障碍物的一种传感器，精度高，易使用。(Four way infrared detection sensor module is used to detect black lines or obstacles of a sensor, high accuracy, easy to use.)

单片机，自动往返汽车，红外检测黑线，根据黑线实现加速减速掉头等动作(Singlechip; SCM;Automatic return to the car, infrared detection black line, according to black line to achieve acceleration, deceleration, U-turn and other actions)