Abstract: Aiming at the intelligent car′s target recognition and obstacle avoidance ability in complex terrain environment, a measurement and control system integrating target recognition, tracking and obstacle avoidance was proposed. The system used STM32f103 single chip microcomputer as the control core and DC deceleration motor as the power source to control the speed and direction of the car accurately. The camera OV7620 was used to detect the object. The obstacle avoidance module was composed of ultrasonic sensor and infrared sensor for avoiding obstacles. The collision between the car and obstacles could be effectively avoided and obstacles could be avoided. Through testing the prototype, the experimental results showed that the car carrying the system could successfully track the target object with the recognition accuracy of 85% and obstacle avoidance passing rate of 80%. At the same time, the car could successfully avoid many complex obstacles, which proves that the system has good stability, strong antiinterference, and can better solve the problem of target recognition and obstacle avoidance of intelligent car in complex environment.

Key words: obstacle identification and avoidance, four-wheel drive, control system, intelligent car, golf