Eye Controlled Typing Using PIC16F877A
نویسنده
چکیده
People with physical disabilities face a lot of problems in communication with their fellow human beings. In this paper, the design of an eye-controlled system with an emphasis on the Human-Computer-Interface (HCI) based on Electroencephalography (EEG) has been presented. The basis for this design is the electric potentials generated by the human eye. After this potential is sensed by electrodes, the signals are amplified, filtered, shifted, and sent into the PIC microcontroller. Also, additional processes were designed to overcome the sources of EEG signals variation. The signals captured using sensors, are first amplified, and then noise is removed and then digitized, before being transferred to PC for software interfacing Using PIC16F877A and RS232 serial communication. Visual basic software is used to build a nonconventional keyboard layout. Keywords-Human Computer Interaction, Real Time System, PIC Microcontroller, and Electro-encephalography.
منابع مشابه
A Prototype Gaze-Controlled Speller for Text Entry
Eye typing provides a means of communication that is useful for people with disabilities which prevent using their hands for text entry. In this paper, we describe the development of the prototype gaze-controlled speller and discuss its experimental evaluation. Using scrollable virtual keyboard interface, the text input speed of 1.2 wpm was achieved. Keywords—gaze tracking; gaze writing; eye ty...
متن کاملUsability Evaluation of Dwell-free Eye Typing Techniques
Dwelling is an essential task to be performed to select keys from an on-screen keyboard present in the eye typing interface. This selection task can be performed by fixing eye gaze on a key for a prolonged time. Spending sufficient amount of time on each key effectively decreases the overall eye typing rate. To address the problem, researchers proposed mechanisms, which diminish the dwell time....
متن کاملDesign and Implementation of Bluetooth Based Data Logging of Processed Real Time Signal Using PIC16F877A
The growing implementation of technology had significant impact on its methods and practice. One technology with such an impact is the ever growing use of wireless systems in hospitals, industries and biomedical institutions. The objective is to transfer processed real time signal over Bluetooth using PIC Microcontroller. This is applicable for monitoring certain parameters such as temperature,...
متن کاملWriting with Your Eye: A Dwell Time Free Writing System Adapted to the Nature of Human Eye Gaze
We investigate the usability of an eye controlled writing interface that matches the nature of human eye gaze, which always moves and is not immediately able to trigger the selection of a button. Such an interface allows the eye continuously to move and it is not necessary to dwell upon a specific position to trigger a command. We classify writing into three categories (typing, gesturing, and c...
متن کاملThe Sound of One Eye Clapping: Tapping an Accurate Rhythm With Eye Movements
As eye-controlled interfaces becomes increasingly viable, there is a need to better understand fundamental humancomputer interaction capabilities between a human and a computer via an eye tracking device. Prior research has explored the maximum rate of input from a human to a computer, such as key-entry rates in eye-typing tasks, but there has been little or no work to determine capabilities an...
متن کامل