• ANKITA ARUN DAHAKE
• Devendra S. Chaudhari

Most of the recent smart mobile and communication devices do not accommodate special indigent users to manage their wireless communication over long distance. A microcontroller based text entry system can be developed, built and tested to address such a missing functionality for visually impaired. The developed systems major contribution is that it is customized to provide the special needy persons a new mobile text entry method that relies on solely Braille alphabet and dismisses memorizing, offering visually impaired person an easy writing mechanism. With the enormous growth in the field of telecom it was urgent to offer visually impaired person this kind of text entry system for the communication purpose. To provide better and convenient lifestyle to disabled person, the microcontroller based system is programmed so that it can be configured to adjust customer’s disability. To analyze the performance of developed system subjects with visually–partially impaired disability were chosen. The response for comfort level of subject while handling keypad matrix is analyzed, 80% user found it comfortable. The experiments were carried out, to detect the perfect distance of palm from Braille keypad matrix to sense the Braille code exactly, to avoid error. Total 20 trials were carried out for each user, basically 0.6 cm is considered to be null hypothesis and from the results it is acceptable at any significance level. However 0.4 and 0.8cm distance was not encouraging with almost null for 0.2 and 1 cm. Total data of visually–partially impaired subjects are summarized in performance analysis section providing identification score 97% for perfect palm distance and maximum 96% for the 40mm distance; indicating the preferable distance of studs.

Index Terms - Braille matrix, Microcontroller, GSM modem, Relay, Braille cell, Solenoids

"A Paradigm Shift to Braille Data Entry System for The Visually Impaired", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.596-601, June-2018, Available :http://www.jetir.org/papers/JETIR1806775.pdf

"A Paradigm Shift to Braille Data Entry System for The Visually Impaired", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp596-601, June-2018, Available at : http://www.jetir.org/papers/JETIR1806775.pdf