A Hands-Free Trunk Opening and Closing System

The era of the unmanned smart car is coming soon. The paper will propose an intelligent hands-free system to open and close trunk by identifying the master’s motions, complete the prototype design, and finish its real car test. In the system, we use smartphone to start up the hands-free function, and then use an infrared distance sensor and two ultrasonic sensors to identify the master’s command motions. The features of the system are as follows. (i) It can detect the master’s command motions easily and correctly. (ii) Due to the safe design, the automatic trunk opening or closing is very safe to the master. (iii) The system is robust to the light conditions, the colors of the master’s pants and shoes, and different brands of cars. (iv) Because it is simple and cheap, it is very suitable to be widely installed in a general car.