Tanwear, A., Liang, X., Liu, Y., Vuckovic, A. , Ghannam, R. , Böhnert, T., Paz, E., Freitas, P. P., Ferreira, R. and Heidari, H. (2020) Spintronic sensors based on magnetic tunnel junctions for wireless eye movement gesture control. IEEE Transactions on Biomedical Circuits and Systems, 14(6), pp. 1299-1310. (doi: 10.1109/TBCAS.2020.3027242)
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Abstract
The tracking of eye gesture movements using wearable technologies can undoubtedly improve quality of life for people with mobility and physical impairments by using spintronic sensors based on the tunnel magnetoresistance (TMR) effect in a human-machine interface. Our design involves integrating three TMR sensors on an eyeglass frame for detecting relative movement between the sensor and tiny magnets embedded in an in-house fabricated contact lens. Using TMR sensors with the sensitivity of 11mV/V/Oe and ten <1 mm3 embedded magnets within a lens, an eye gesture system was implemented with a sampling frequency of up to 28 Hz. Three discrete eye movements were successfully classified when a participant looked up, right or left using a threshold-based classifier. Moreover, our proof-of-concept real-time interaction system was tested on 13 participants, who played a simplified Tetris game using their eye movements. Our results show that all participants were successful in completing the game with an average accuracy of 90.8%.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Liang, Xiangpeng and Ghannam, Professor Rami and Tanwear, Dr Asfand and Heidari, Professor Hadi and Liu, Miss Yuchi and Vuckovic, Dr Aleksandra |
| Authors: | Tanwear, A., Liang, X., Liu, Y., Vuckovic, A., Ghannam, R., Böhnert, T., Paz, E., Freitas, P. P., Ferreira, R., and Heidari, H. |
| College/School: | College of Science and Engineering > School of Engineering > Biomedical Engineering College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | IEEE Transactions on Biomedical Circuits and Systems |
| Publisher: | IEEE |
| ISSN: | 1932-4545 |
| ISSN (Online): | 1940-9990 |
| Published Online: | 29 September 2020 |
| Copyright Holders: | Copyright © 2020 The Authors |
| First Published: | First published in IEEE Transactions on Biomedical Circuits and Systems 14(6): 1299-1310 |
| Publisher Policy: | Reproduced under a Creative Commons licence |
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