Braille Assistance System for Visually Impaired, Blind & Deaf-Mute people in Indoor & Outdoor Application

Abstract

Navigation in outdoor and indoor is certainly an challenging task for visually impaired, blind and deaf-mute people, indoor navigation itself is certainly becoming an harder task for blind, visually impaired people and dead-mute people. As far as observed for the non-visually impaired, it is even worse for the visually impaired. People with visual disabilities or blinds are often depending up on external assistance like trained dogs, humans, or special devices as support systems for making decisions. Hence blind people need an assistive device that will allow blind user to navigate freely and this requirement has become crucial. Here the interfacing of different sensors and actuators along with Braille keypad which is user friendly application to these peoples is done with ARM LPC-2148 and it helps in minimizing the problems faced by blind people by maximizing the use of technology. The walking stick used by the blind people has multiple sensors incorporated in it, with the help of which it is possible to enhance more features and technology to the walking stick. The main features are to detect the obstacle for collision avoidance, along with certain other sensors for pit whole detection, fire detection, and water detection. Panic switch is the emergency button that sends an SMS from the GSM module to the caretaker with the present particular location (GPS coordinates) of the blind, visually impaired and deaf mute person. The work goes for giving the safest route to blind persons, visually impaired person or deaf-mute person, by designing a more flexible assistance system and cost effective system that helps them in improving their navigating skills in outdoor and indoor application and also not to depend on none during walking in even unknown areas.