Clock Position Arm-navigation Guidance using a Fuzzy Control

Abstract

We propose an arm-navigation assisting system for a visually impaired person to reach an object on the table by simultaneously indicating "clock position" of the object and the velocity of the hand by the pitch of the signal sound. To assist real-time navigation we have adopted optical tracking of marks attached both on the hand and objects instead of scene analysis. The velocity of the hand is decided by a fuzzy control rule depending on the current velocity and the distance between the hand and the target.