913 同時分散刺激型触覚デバイスによる段差検出歩行補助インターフェース(オーガナイズドセッション : 社会に貢献するメカトロニクス)

概要

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The travel guide system for the visually handicapped has been proposed in numerous literatures starting with the tactual vocoder by Smith. These system's basic scheme is to feedback the sensed depth to the surrounding object using the other sensory based on the sensory substitution concept. Our previous travel guide system adopted the ultrasonic device attached on the human's forehead for the sake of the surrounding obstacles distances detection. For indoor walking, this system show the effective performance as travel guide, but we suggested the difficulty in detecting stairs or bumps. This paper describes an approach to execute the blind walking at stairs with additional Sensors and tactile interfaces which specially measure the floor figure variation. For the effective performance to detect and inform the existence of stairs, we studied on the basic distance measurement method and distance-frequency conversion method with human's tactile recognition characteristics. This compensatory tactile interfaces show the validity in stair walking.
一般社団法人日本機械学会の論文
2000-09-08