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Volume 24
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Communication

Eyelid Dynamics Characterization with 120 GHz mmW Radar

by
Dominik Patscheider
1,
Ruochen Wu
2,
Antoni Broquetas
2,*,
Albert Aguasca
2 and
Jordi Romeu
2
1
Department of Electrical Engineering and Information Technology (ETIT), Karlsruhe Institute of Technology (KIT), Campus Süd, Engesserstraße 13, 76131 Karlsruhe, Germany
2
CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya (UPC), Campus Nord, Carrer de Jordi Girona, 1–3, 08034 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(23), 7464; https://doi.org/10.3390/s24237464
Submission received: 15 October 2024 / Revised: 13 November 2024 / Accepted: 15 November 2024 / Published: 22 November 2024
(This article belongs to the Section Radar Sensors)
Versions Notes

Abstract

This paper presents a new approach to measuring eyelid movement using millimeter wave (mmW) radar technology. A two-step method is proposed, involving the observation of a small resolution cell corresponding to the monitored eye and the evaluation of the phase evolution over the measurement period. Simulations are conducted to support radar system optimization and data interpretation with a focus on detecting eyelid movement patterns and compensating for interference from other parts of the body. The feasibility of using this method with eyeglasses is also explored. The proposed technique’s advantages and limitations are discussed in comparison with existing measurement alternatives. The characteristics of eyelid dynamics, including blink frequency, regularity, duration, and velocity can be used to assess neurological conditions and driver drowsiness.
Keywords: millimeter wave radar; eyelid detection; eye activity; stress; radar beam millimeter wave radar; eyelid detection; eye activity; stress; radar beam

Share and Cite

MDPI and ACS Style

Patscheider, D.; Wu, R.; Broquetas, A.; Aguasca, A.; Romeu, J. Eyelid Dynamics Characterization with 120 GHz mmW Radar. Sensors 2024, 24, 7464. https://doi.org/10.3390/s24237464

AMA Style

Patscheider D, Wu R, Broquetas A, Aguasca A, Romeu J. Eyelid Dynamics Characterization with 120 GHz mmW Radar. Sensors. 2024; 24(23):7464. https://doi.org/10.3390/s24237464

Chicago/Turabian Style

Patscheider, Dominik, Ruochen Wu, Antoni Broquetas, Albert Aguasca, and Jordi Romeu. 2024. "Eyelid Dynamics Characterization with 120 GHz mmW Radar" Sensors 24, no. 23: 7464. https://doi.org/10.3390/s24237464

APA Style

Patscheider, D., Wu, R., Broquetas, A., Aguasca, A., & Romeu, J. (2024). Eyelid Dynamics Characterization with 120 GHz mmW Radar. Sensors, 24(23), 7464. https://doi.org/10.3390/s24237464

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