POF-based specklegram sensor post processing comparative: methods for extracting breath and heart rate

Luis Reyes González; Francisco Anabitarte García; Eusebio Real; Luis Rodriguez Cobo; Mauro Lomer; José Miguel López-Higuera

doi:10.1117/12.2539658

28 August 2019 POF-based specklegram sensor post processing comparative: methods for extracting breath and heart rate

Luis Reyes González, Francisco Anabitarte García, Eusebio Real, Luis Rodriguez Cobo, Mauro Lomer, José Miguel López-Higuera

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Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 1119911 (2019) https://doi.org/10.1117/12.2539658
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

Continuous patient monitoring has been evidenced as very beneficious for reducing degeneration¹. Due to this, a POF specklegram sensor has been developed based on a previous work². This work presents a comparative between analysis methods of the specklegram signal for achieving a precise and robust non-contact monitor system. Two different techniques have been used: one based on the Fast Fourier Transform (FFT) and the other based on the Hilbert Transform (HT). Each technique has been employed with two different methods, for heart rate and breath rhythm. The different algorithms are tested on 10 volunteers of different ages and sex.

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Luis Reyes González, Francisco Anabitarte García, Eusebio Real, Luis Rodriguez Cobo, Mauro Lomer, and José Miguel López-Higuera "POF-based specklegram sensor post processing comparative: methods for extracting breath and heart rate", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119911 (28 August 2019); https://doi.org/10.1117/12.2539658

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KEYWORDS

Heart

Speckle

Sensors

Beam propagation method

Interference (communication)

Speckle pattern

Signal detection

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