視覚障害者のための歩行補助装置における下り段差を含む障害物検知

概要

論文の詳細を見る
A wearable electronic travel aid to guide visually impaired has been developed. Visually impaired are at risk of a lot of accidents on a solo walking. Therefore, it is necessary to support safety walking with the electronic travel aids. The detection of the obstacles is one important factor for the safety. In this paper, the method of detection of the obstacles is proposed. Descending down steps like the platform and down stairs are very dangerous places. Therefore, the obstacles to detect are walls, upstairs, descending down steps and downstairs. An IR range finder and the fuzzy reasoning are used to detect these objects. The production rules used for the fuzzy reasoning are made based on using human beings sense. The experimental results show that the obstacles could be detected and distinguish a type by the coverage of 100% at 750mm in front of the obstacles. The results showed this device is effective as the detection device of the obstacle to support the visually impaired. The researched and developed device was practicable and suitable for the life environment.
2008-12-30