光电检测模块用以实现小车沿着场地上标出的黑色路线运动。题目中路径和周围场地黑白对比明显，可用传感器来感知前进轨迹。-Optical detection module for the realization of the venue on the car along the black line marked movement. Title venues in and around the path of black-and-white contrast Obviously, the sensor can be used to track progress perception.