采用单片机为控制核心，利用超声波传感器检测道路障碍，控制电动小汽车的自动避障，快慢速行驶，自动停车，并自动记录时间、里程和速度，自动寻迹和寻光功能。-Single-chip computer to control the core, the use of ultrasonic sensors detect obstacles roads, control of electric cars automatic obstacle avoidance, fast low traffic speeds, automatic parking, and automatically record time, mileage and speed, automatic ray tracing and searching functionality.