Method for Extracting Arterial Pulse Waveforms from Interferometric Signals
This paper presents a methodology for extracting and simulating arterial pulse waveform signals from Fabry–Perot interferometric measurements, emphasizing a practical approach for noninvasive cardiovascular assessment. A key novelty of this work is the presentation of a complete Python-based process...
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MDPI AG
2025-07-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/14/4389 |
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| author | Marian Janek Ivan Martincek Gabriela Tarjanyiova |
| author_facet | Marian Janek Ivan Martincek Gabriela Tarjanyiova |
| author_sort | Marian Janek |
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| description | This paper presents a methodology for extracting and simulating arterial pulse waveform signals from Fabry–Perot interferometric measurements, emphasizing a practical approach for noninvasive cardiovascular assessment. A key novelty of this work is the presentation of a complete Python-based processing pipeline, which is made publicly available as open-source code on GitHub (git version 2.39.5). To the authors’ knowledge, no such repository for demodulating these specific interferometric signals to obtain a raw arterial pulse waveform previously existed. The proposed system utilizes accessible Python-based preprocessing steps, including outlier removal, Butterworth high-pass filtering, and min–max normalization, designed for robust signal quality even in settings with common physiological artifacts. Key features such as the rate of change, the Hilbert transform of the rate of change (envelope), and detected extrema guide the signal reconstruction, offering a computationally efficient pathway to reveal its periodic and phase-dependent dynamics. Visual analyses highlight amplitude variations and residual noise sources, primarily attributed to sensor bandwidth limitations and interpolation methods, considerations critical for real-world deployment. Despite these practical challenges, the reconstructed arterial pulse waveform signals provide valuable insights into arterial motion, with the methodology’s performance validated on measurements from three subjects against synchronized ECG recordings. This demonstrates the viability of Fabry–Perot sensors as a potentially cost-effective and readily implementable tool for noninvasive cardiovascular diagnostics. The results underscore the importance of precise yet practical signal processing techniques and pave the way for further improvements in interferometric sensing, bio-signal analysis, and their translation into clinical practice. |
| format | Article |
| id | doaj-art-6cc8fa0df93e4ee6835c725c1804af76 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-6cc8fa0df93e4ee6835c725c1804af762025-08-20T03:56:49ZengMDPI AGSensors1424-82202025-07-012514438910.3390/s25144389Method for Extracting Arterial Pulse Waveforms from Interferometric SignalsMarian Janek0Ivan Martincek1Gabriela Tarjanyiova2Physics Department, Faculty of Electrical Engineering and Information Technology, University of Zilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaPhysics Department, Faculty of Electrical Engineering and Information Technology, University of Zilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaPhysics Department, Faculty of Electrical Engineering and Information Technology, University of Zilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaThis paper presents a methodology for extracting and simulating arterial pulse waveform signals from Fabry–Perot interferometric measurements, emphasizing a practical approach for noninvasive cardiovascular assessment. A key novelty of this work is the presentation of a complete Python-based processing pipeline, which is made publicly available as open-source code on GitHub (git version 2.39.5). To the authors’ knowledge, no such repository for demodulating these specific interferometric signals to obtain a raw arterial pulse waveform previously existed. The proposed system utilizes accessible Python-based preprocessing steps, including outlier removal, Butterworth high-pass filtering, and min–max normalization, designed for robust signal quality even in settings with common physiological artifacts. Key features such as the rate of change, the Hilbert transform of the rate of change (envelope), and detected extrema guide the signal reconstruction, offering a computationally efficient pathway to reveal its periodic and phase-dependent dynamics. Visual analyses highlight amplitude variations and residual noise sources, primarily attributed to sensor bandwidth limitations and interpolation methods, considerations critical for real-world deployment. Despite these practical challenges, the reconstructed arterial pulse waveform signals provide valuable insights into arterial motion, with the methodology’s performance validated on measurements from three subjects against synchronized ECG recordings. This demonstrates the viability of Fabry–Perot sensors as a potentially cost-effective and readily implementable tool for noninvasive cardiovascular diagnostics. The results underscore the importance of precise yet practical signal processing techniques and pave the way for further improvements in interferometric sensing, bio-signal analysis, and their translation into clinical practice.https://www.mdpi.com/1424-8220/25/14/4389arterial pulse waveformFabry–Perot interferometerPython-based processing |
| spellingShingle | Marian Janek Ivan Martincek Gabriela Tarjanyiova Method for Extracting Arterial Pulse Waveforms from Interferometric Signals Sensors arterial pulse waveform Fabry–Perot interferometer Python-based processing |
| title | Method for Extracting Arterial Pulse Waveforms from Interferometric Signals |
| title_full | Method for Extracting Arterial Pulse Waveforms from Interferometric Signals |
| title_fullStr | Method for Extracting Arterial Pulse Waveforms from Interferometric Signals |
| title_full_unstemmed | Method for Extracting Arterial Pulse Waveforms from Interferometric Signals |
| title_short | Method for Extracting Arterial Pulse Waveforms from Interferometric Signals |
| title_sort | method for extracting arterial pulse waveforms from interferometric signals |
| topic | arterial pulse waveform Fabry–Perot interferometer Python-based processing |
| url | https://www.mdpi.com/1424-8220/25/14/4389 |
| work_keys_str_mv | AT marianjanek methodforextractingarterialpulsewaveformsfrominterferometricsignals AT ivanmartincek methodforextractingarterialpulsewaveformsfrominterferometricsignals AT gabrielatarjanyiova methodforextractingarterialpulsewaveformsfrominterferometricsignals |