Desarrollo del hardware un instrumento de electrooculografía de bajo coste.

  • Carlos Cano Domingo
  • Francisco García Lagos
  • Gonzalo Joya Caparrós
  • Roberto A. Becerra García

Resumen

In this work we have developed the hardware for an instrument to measure electrooculographic signals (EOG) that will help the diagnosis of hereditary ataxias. The instrument will be used in several medical centres in Cuba, but has been designed so that it can be used elsewhere. The work has involved the complete development of the instrument, and implements all the required stages, from acquisition of the biopotentials by mean of electrodes, to the reception and use of these signals on a computer. Starting from a published initial design, we have simulated and analyzed the system in order to propose several fixes and improvements to the initial design. We have also implemented several prototypes that have been corrected and adapted to meet our particular requirements. During the implementation of the system we have put special emphasis on the limitations about the cost and size that the instrument should had. Several alternatives have been proposed for each of its subsystems, highlighting the advantages and disadvantages of each one.
En este trabajo se ha desarrollado el hardware para un instrumento de medición de señales EOG que permitirá el diagnóstico de enfermedades como las ataxias hereditarias, concretamente para varios centros médicos de Cuba. El diseño se ha realizado desde la captación de las señales electrooculográficas, hasta la recepción de los datos en un ordenador. Partiendo de un diseño inicial, se han simulado y prototipado diferentes versiones que han sido corregidas y adaptadas para alcanzar los requisitos de nuestro sistema. Se pone especialénfasis en las limitaciones relativas al coste y las dimensiones que debe tener el dispositivo final, y se proponen distintas alternativas para cada uno de los apartados, poniendo de relieve los resultados con cada una de ellas. Se ha realizado una primera versión en protoboard y una segunda en PCB, en la cual se minimizan al máximo posible las dimensiones y se opta por el uso de dispositivos que permitan realizar los primeros prototipos de diseño con el limitado tiempo de desarrollo del que se ha dispuesto.

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Citas

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Publicado
2017-07-31
Sección
Artículos