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Article

Accurate Spirometry with Integrated Barometric Sensors in Face-Worn Garments

1
Research Group Embedded Intelligence, German Research Center for Artificial Intelligence, 67663 Kaiserslautern, Germany
2
Department of Computer Science, University of Kaiserslautern, 67663 Kaiserslautern, Germany
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(15), 4234; https://doi.org/10.3390/s20154234
Received: 17 June 2020 / Revised: 20 July 2020 / Accepted: 24 July 2020 / Published: 29 July 2020
(This article belongs to the Special Issue Wearable Sensors for Healthcare)
Cardiorespiratory (CR) signals are crucial vital signs for fitness condition tracking, medical diagnosis, and athlete performance evaluation. Monitoring such signals in real-life settings is among the most widespread applications of wearable computing. We investigate how miniaturized barometers can be used to perform accurate spirometry in a wearable system that is built on off-the-shelf training masks often used by athletes as a training aid. We perform an evaluation where differential barometric pressure sensors are compared concurrently with a digital spirometer, during an experimental setting of clinical forced vital capacity (FVC) test procedures with 20 participants. The relationship between the two instruments is derived by mathematical modeling first, then by various regression methods from experiment data. The results show that the error of FVC vital values between the two instruments can be as low as 2∼3%. Beyond clinical tests, the method can also measure continuous tidal breathing air volumes with a 1∼3% error margin. Overall, we conclude that barometers with millimeter footprints embedded in face mask apparel can perform similarly to a digital spirometer to monitor breathing airflow and volume in pulmonary function tests. View Full-Text
Keywords: wearable healthcare; biomedical sensing; spirometry; pulmonary signals; barometer wearable healthcare; biomedical sensing; spirometry; pulmonary signals; barometer
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MDPI and ACS Style

Zhou, B.; Baucells Costa, A.; Lukowicz, P. Accurate Spirometry with Integrated Barometric Sensors in Face-Worn Garments. Sensors 2020, 20, 4234. https://doi.org/10.3390/s20154234

AMA Style

Zhou B, Baucells Costa A, Lukowicz P. Accurate Spirometry with Integrated Barometric Sensors in Face-Worn Garments. Sensors. 2020; 20(15):4234. https://doi.org/10.3390/s20154234

Chicago/Turabian Style

Zhou, Bo; Baucells Costa, Alejandro; Lukowicz, Paul. 2020. "Accurate Spirometry with Integrated Barometric Sensors in Face-Worn Garments" Sensors 20, no. 15: 4234. https://doi.org/10.3390/s20154234

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