Electronic bracelet and vision-enabled waist-belt for mobility of visually impaired people

Assistive Technology : the Official Journal of RESNA
Shripad BhatlawandeSomedeb Gupta

Abstract

A wearable assistive system is proposed to improve mobility of visually impaired people (subjects). This system has been implemented in the shape of a bracelet and waist-belt in order to increase its wearable convenience and cosmetic acceptability. A camera and an ultrasonic sensor are attached to a customized waist-belt and bracelet, respectively. The proposed modular system will act as a complementary aid along with a white cane. Its vision-enabled waist-belt module detects the path and distribution of obstacles on the path. This module conveys the required information to a subject via a mono earphone by activating relevant spoken messages. The electronic bracelet module assists the subject to verify this information and to perceive distance of obstacles along with their locations. The proposed complementary system provides an improved understanding of the surrounding environment with less cognitive and perceptual efforts as compared to a white cane alone. This system was subjected to clinical evaluations with 15 totally blind subjects. Results of usability experiments demonstrated effectiveness of the system as a mobility aid. Amongst the participated subjects, 93.33% expressed satisfaction with the information content of th...Continue Reading

References

Feb 1, 1992·IEEE Transactions on Bio-medical Engineering·P B Meijer
Jul 25, 2000·The British Journal of Ophthalmology·T H Margrain

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Citations

Dec 20, 2015·Wiley Interdisciplinary Reviews. Cognitive Science·Victor R SchinaziDaniel-Robert Chebat
May 17, 2017·Assistive Technology : the Official Journal of RESNA·John-Ross RizzoDae Shik Kim
Dec 26, 2017·The British Journal of Visual Impairment·Dae Shik KimKoorosh Naghshineh
Oct 8, 2016·Assistive Technology : the Official Journal of RESNA·Michael JonesJohn Morris
Mar 23, 2017··João BarrosoHugo Paredes

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Software Mentioned

BeagleBoard
GuideCane
Badge3D
CyARM
SPSS
VEWB
NONP
NAVI
Navbelt
NOCA

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