Desarrollo de un prototipo para aprendizaje de lenguaje braile asistido por audio

Abstract

The prototype is a learning aid for people with visual disabilities as well as for those who wish to learn the braille language, where they will learn through the development of an auditory keyboard and through two matrices made up of solenoids that also serve for feedback, the prototype will be assisted by voice, controlled by an electronic card called Raspberry Pi, thus the interpretation will be in an interactive, simple and low cost way that will serve to start with the knowledge of the braille code. The device has an electronic system divided into two areas of learning and evaluation. The reading area is operated by means of a matrix keyboard with each key with its respective braille code, where the alphabet is shown distinguishing capital letters and numbers with an additional key for the generator sign. The user, presses the different keys with the respective symbology and immediately the sound with the name of the corresponding key is heard. For the second part, two matrices formed by ten solenoids were elaborated that are displayed when the user activates them by means of voice commands, it is possible to verify the braille writing and evaluate each of the characters. Through prototype functioning tests, carried out with people with visual disabilities, a 92% effectiveness was obtained and through surveys carried out, a validation percentage of 90.17% was obtained in the device for teaching the Braille system, with the purpose of learning and evaluate in a more dynamic way with voice commands.