MEMS ultrasonic transducers for safe, low-power and portable eye-blinking monitoring.
Springer Science and Business Media LLC
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Sun, S., Wang, J., Zhang, M., Ning, Y., Ma, D., Yuan, Y., Niu, P., et al. (2022). MEMS ultrasonic transducers for safe, low-power and portable eye-blinking monitoring.. Microsyst Nanoeng, 8 (1) https://doi.org/10.1038/s41378-022-00396-w
Funder: Tianjin Municipal Science and Technology Project (No. 20JCQNJC011200), National Key Research and Development Program (No. 2020YFB2008801), and Nanchang Institute for Microtechnology of Tianjin University
Eye blinking is closely related to human physiology and psychology. It is an effective method of communication among people and can be used in human-machine interactions. Existing blink monitoring methods include video-oculography, electro-oculograms and infrared oculography. However, these methods suffer from uncomfortable use, safety risks, limited reliability in strong light or dark environments, and infringed informational security. In this paper, we propose an ultrasound-based portable approach for eye-blinking activity monitoring. Low-power pulse-echo ultrasound featuring biosafety is transmitted and received by microelectromechanical system (MEMS) ultrasonic transducers seamlessly integrated on glasses. The size, weight and power consumption of the transducers are 2.5 mm by 2.5 mm, 23.3 mg and 71 μW, respectively, which provides better portability than conventional methods using wearable devices. Eye-blinking activities were characterized by open and closed eye states and validated by experiments on different volunteers. Finally, real-time eye-blinking monitoring was successfully demonstrated with a response time less than 1 ms. The proposed solution paves the way for ultrasound-based wearable eye-blinking monitoring and offers miniaturization, light weight, low power consumption, high informational security and biosafety.
Article, /639/166/987, /639/925/929/170, article
National Natural Science Foundation of China (National Science Foundation of China) (62001322)
External DOI: https://doi.org/10.1038/s41378-022-00396-w
This record's URL: https://www.repository.cam.ac.uk/handle/1810/338031