Design of intelligent suitcase based on single chip

An intelligent suitcase is designed, which can move automatically or can be artificially dragged. With the device of differential mechanism, the suitcase can decelerate, obtain different velocity of the two wheels and sheer off according to the signal of the motor driver. Meanwhile, the transform of automatic control and artificial drag is achieved through the clutch. Electron magnetic brake is equipped to control braking. The AT89S51 single-chip is used to auto control the suitcase. In order to ensure the distance between the suitcase and the user, the ultrasonic sensors and the method of the time difference location measured are used. It´s very convenient for people to travel and worth while to practice.