Publication: DESARROLLO DE SOFTWARE PARA MANEJO Y PRUEBAS DE UN DISPOSITIVO ELECTRÓNICO DE AYUDA PARA CIEGOS
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Date
2017
Authors
LUDUEÑA GIACAMAN, MAURICIO ANTONIO
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Abstract
El objetivo principal de este trabajo es el desarrollo de un programa para el manejo deun dispositivo electrónico, diseñado por la empresa TECNOCAL, cuya función es lade permitir a una persona ciega reconocer figuras en un papel. Adicionalmente, en estetrabajo, se desarrollan programas complementarios en computador para el apoyo a losguías que trabajan con estas personas.El dispositivo electrónico funciona mediante un arreglo de sensores que miden laintensidad de color en el papel, y un arreglo de actuadores que entregan el estímulotáctil al dedo de la persona ciega. Una plataforma de procesamiento se encarga detransformar la información de los sensores en estimulación para los actuadores. Elprograma desarrollado debe ser capaz de controlar esta plataforma.Primero se crea un programa para el manejo de la plataforma de procesamiento, enparticular de los periféricos I2C, Serial y Timer. Luego, se realiza un segundoprograma que maneja los sensores de color y la iluminación que estos deben tenerpara una correcta medición. Un tercer programa se encarga de manejar el circuito deestimuladores táctiles, entregando la señal correspondiente al estímulo requerido.Finalmente, se unen estos programas de manejo en uno solo, lo cual requiere realizarcambios para lograr la compatibilidad entre los programas diseñados anteriormente.El programa combinado maneja el dispositivo final diseñado por la empresa.Adicionalmente, se crean 2 programas en el computador: uno para visualización delas mediciones de los sensores, y otro para configurar el dispositivo.Al finalizar el trabajo de memoria, se consigue la funcionalidad completa deldispositivo y de los programas en computador. Con ayuda de la Universidad Católicase realizan pruebas con personas ciegas, las que validan la correcta implementacióndel trabajo de memoria. Los supervisores validan a su vez los programas para elcomputador.
The main goal of this Project is the development of an electronic device, designed byTECNOCAL, whose purpose is to allow a blind person to recognize figures in a paper.Additionally, in this project, complementary software is developed for the PC, with thegoal of supporitng the guides who work with the blind.This electronic device functions with an array of color sensors that measure theintensity of color in a paper, and an array of actuators that stimulate the finger of theblind. A processing module is responsible for transforming the information from thecolor sensor into a stimulation signal for the actuators. The Software developed in thisproject must be able to control this module.First, a software is developed to operate the processing module, including itsperipherals: I2C, Serial and Timer. Then, a second program is created for a correcthandling of the color sensor, and the illumination required for these sensor to functionproperly. A third program handles the tactile stimulators, sending the signals for therequired stimulus. Finally, these 3 programs are combined into one. This requires somechanges to obtain a good compatibility between these programs. The combinedprogram handles the final design of the device made by the company.Additionally, 2 Software are created for the PC: One for a graphic visual of themeasurements of the color sensors, and the other to allow the configuration of thedevice.At the end of this project, the full functionality of the device and the PC program isachieved. With the help of the “Universidad Católica”, a set of tests is performed withblind people. These tests help validate the correct implementation of this work. At thesame time, the supervisors help validate both programs for the PC.
The main goal of this Project is the development of an electronic device, designed byTECNOCAL, whose purpose is to allow a blind person to recognize figures in a paper.Additionally, in this project, complementary software is developed for the PC, with thegoal of supporitng the guides who work with the blind.This electronic device functions with an array of color sensors that measure theintensity of color in a paper, and an array of actuators that stimulate the finger of theblind. A processing module is responsible for transforming the information from thecolor sensor into a stimulation signal for the actuators. The Software developed in thisproject must be able to control this module.First, a software is developed to operate the processing module, including itsperipherals: I2C, Serial and Timer. Then, a second program is created for a correcthandling of the color sensor, and the illumination required for these sensor to functionproperly. A third program handles the tactile stimulators, sending the signals for therequired stimulus. Finally, these 3 programs are combined into one. This requires somechanges to obtain a good compatibility between these programs. The combinedprogram handles the final design of the device made by the company.Additionally, 2 Software are created for the PC: One for a graphic visual of themeasurements of the color sensors, and the other to allow the configuration of thedevice.At the end of this project, the full functionality of the device and the PC program isachieved. With the help of the “Universidad Católica”, a set of tests is performed withblind people. These tests help validate the correct implementation of this work. At thesame time, the supervisors help validate both programs for the PC.
Description
Catalogado desde la version PDF de la tesis.
Keywords
ACTUADOR , EMPRESA TECNOCAL , ESTIMULACION TACTIL , SENSOR DE COLOR