Secured Haptic Technology Device to Navigate the Visually Challenged People

N Suganya, P Rajeswari
unpublished
For many visually impaired people, a cane or a stick is a close friend helping them to detect and avoid obstacles in the walking paths. During walking with the cane going from place to place, they sense and guess directions and locations by hearing sounds surrounding, sniffing smells in the air, feeling touches on skin, counting footsteps they walk, and memorizing events in time and spaces. However, it is difficult for them to guess where they are when surrounding environment are new or
more » ... are new or changed, or when they get lost memory of locations. The important writing method of blind people is to emboss Braille dots on paper with slate and stylus, and the result can be read by finger feeling on the other side of paper, where dots are embossed. However, there are several problems. It takes longer time and larger space to write. Hands get tired quickly because of using force pressing stylus. The dots are not easy to read as emboss dots. It's difficult for blind persons to learn holding stylus perpendicular. The writing is not convenient for transferring, copying, or editing. Therefore, this writing method limits communication ability of blind people. There are some electronic typewriter products are being used but they are bulky and expensive. This project aims to provide the blind navigation information via audible messages and haptic feedback, helping them localize where are they, where they are going to, and to improve their mobility.
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