基于单片机的自动寻迹避障小车设计

摘要

为了使小车自动沿规定路径行驶，并且能够自动避障，系统以 AT89C52单片机为控制核心，采用红外对管 ST188作为寻迹模块。为了小车能够更好的避障，在小车的前、左、右3个方向上安装了3个 HC SR04超声波模块来探测障碍物距离，单片机输出的 PWM 波驱动模块 L298N 来控制小车的速度及转向，设计了一种自动避障小车。%In order to make the car automati-cally along a prescribed path,and can automatic obstacle avoidance,system based on AT89C52 sin-gle chip microcomputer as control core,using in-frared tube ST188 as tracing module.In order to better car to obstacle avoidance,three HC SR04 ultrasonic module installed in the car front,left, right three directions to detect obstacles distance, PWM wave output drive module of L298N MCU to control the car’s speed and steering,designed a kind of automatic obstacle avoidance.