BCG signal processing based on advanced LMS filter for optical fiber monitor

Yifan Liu; Wei Xu; Changyuan Yu

doi:10.1117/12.2575310

10 October 2020 BCG signal processing based on advanced LMS filter for optical fiber monitor

Yifan Liu, Wei Xu, Changyuan Yu

Proceedings Volume 11547, Optoelectronic Devices and Integration IX; 115471P (2020) https://doi.org/10.1117/12.2575310
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

Heart Rate Variability (HRV) analysis is an important tool for health monitoring. A non-invasive smart health monitoring system based on optical fiber interferometer can get HRV information from the Ballistocardiogram (BCG) signal. For some patients, the HRV can hardly be calculated due to the interferences from breath and other vibrations. In this research, we obtain a stable and high-sensitive BCG signal by a Mach-Zehnder interferometer (MZI) based sensor. In order to reduce the noise in signal, we introduce an advanced least mean squares (LMS) adaptive filter into the procedure. We use the signal processed by a bandpass filter as the ‘desired signal’ to deal with the raw data and obtain a preferable output for HRV calculation.

Conference Presentation

Citation Download Citation

Yifan Liu, Wei Xu, and Changyuan Yu "BCG signal processing based on advanced LMS filter for optical fiber monitor", Proc. SPIE 11547, Optoelectronic Devices and Integration IX, 115471P (10 October 2020); https://doi.org/10.1117/12.2575310

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