Interfaz humano-computadora basada en señales de electrooculografía para personas con discapacidad motriz - Human-computer interface based on signals of electrooculography for physical disabled people
DOI:
https://doi.org/10.32870/recibe.v3i2.30Palabras clave:
Electrooculografía, discapacidad motriz, Interfaz humano-computadora, Ingeniería biomédicaResumen
En este trabajo se presenta el desarrollo de un prototipo que asiste, a personas con cierta discapacidad motriz, en la interacción con la computadora de una forma simple y económica, mediante señales de electrooculografía. Esta técnica permite detectar los movimientos oculares basada en el registro de la diferencia de potencial existente entre la córnea y la retina, tal propiedad es aprovechada en este proyecto para controlar el desplazamiento del cursor del ratón de una forma precisa sobre la pantalla de la computadora. El prototipo es un diseño compacto alimentado de una fuente única de 5V proveniente del puerto USB y utiliza la circuitería ya implementada en cualquier ratón electromecánico convencional con mínimas modificaciones. El uso de tales dispositivos así como de electrodos convencionales hace el producto de un costo relativamente bajo en relación a las propuestas en otros trabajos.Abstract: In this paper, the development of a prototype is presented, which allows people with certain mobility disabilities interact with the computer. The design of the prototype is composed of different elements on a simple and economical way by mainly using electrooculographic signals. It is important to highlight that the proposed technique enables the detection of the eye movements based on the records of the potential difference between cornea and retina. In this project, this last property is used to control the movement of the mouse cursor on the computer screen in a precise way. The prototype is powered from a single 5V supply from USB port, uses compact circuitry and is implemented in a conventional electromechanical mouse with minimal modifications. The use of such devices as well as common electrodes make possible that the final product presents a low-cost proposal.Keywords: Electrooculography, mobility disabilities, human-computer interface, biomedical engineering.Citas
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