A development of auto alignment system between trailer and freight wagon using electronic sensors for intermodal transportation

Recently intermodal transportation systems are significantly considered as advanced technique for future railroad logistics. These are aimed for particularly reducing complicated job process in the railroad based transportation and its relevant logistic cost in economic viewpoint. In this paper we suggest an aligning system using ultrasonic sensors, photo sensors, and CCD cameras for our intermodal transportation system which has been proposed in our previous work. It is unique that this system transfers the containers horizontally to realize train logistics automations.