Diseño e implementación de un prototipo móvil de comunicación basado en tarjetas de desarrollo para personas no videntes.

Abstract

With the aim of contributing to the inclusion of the visually impaired in information and communication technologies (ICT) in the city Riobamba, a prototype of a mobile device for the blind has been developed, which provides services such as the realization and reception of calls as well as short messages (SMS) using the GSM network, storage of contacts and determination of a geolocation using GPS receiver, to be sent by a message, thus providing relevant information to whoever is at care of the blind person. This hardware level device has a 32-bit ARM architecture microcontroller, which is the central part of the device that interacts with the SIM908 module and the Emic2 audio synthesizer module, in addition the user interface has a keyboard based on Braille coding. At the software level, there is a program based on the C++ language where routines are developed that will allow to transform the key combination into information to send a message, make calls and send the location of the device. In the research, the descriptive methodology was used to determine the functionality of the equipment, surveys were carried out at the APRODVICH Institute, the comfort of the people was observed when manipulating the device and through the tabulation of the data, it was found that 90% of the population was able to handle the equipment, the result is satisfactory since it provides an indication that the interface developed for the prototype is adequate, tests have also been performed to determine the stability and accuracy of the equipment in terms of positioning, obtaining as result that the precision of the Equipment is less than 2.5 meters at a significance level of 0.05 so it is concluded that the device used did not incorporate an additional error however if more precision is required it is advisable to use a professional GPS receiver or apply GPS differentiation techniques.