@inproceedings{5bb5d4486c3a42adbcc339e757e242db,
title = "BCG signal processing based on advanced LMS filter for optical fiber monitor",
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 adesired signal' to deal with the raw data and obtain a preferable output for HRV calculation. ",
keywords = "BCG, Heart Rate Variability, LMS adaptive filter",
author = "Yifan Liu and Wei Xu and Changyuan Yu",
note = "Funding Information: Compared (a) to (b), the output is disordered and the baseline is not return to zero. Therefore, {\textquoteleft}desired respond{\textquoteright} chosen can influenceetahcpacitfoy rf.T hielwrtiaesngalro cpessedybaH2z toH7zabndpass filter ismorepreferable. 4.Conclusion This research uses an LMS filter to process the BCG signal. A raw signal collected from MZI sensor preprocessed by a 2Hz to 7Hz bandpass filter is chosen to be the {\textquoteleft}desired respond{\textquoteright}. By the processing of LMS filter,t ehsmall body vibration can be limited and strong vibration will be enlarged compared with the signal processed by a 2Hz to 7Hz bandpass filter only.Meanwhile,the signalprocessed by a 2Hz to 7Hz bandpassfilteris aebtr {\textquoteleft}tdeseired respond{\textquoteright} fortheLMSfilter. 5.Acknowledgement This work was supported by Grant 15211317 from HK RGC GRF and 1-ZVHA from HK PolyU. Publisher Copyright: {\textcopyright} 2020 SPIE.; Optoelectronic Devices and Integration IX 2020 ; Conference date: 12-10-2020 Through 16-10-2020",
year = "2020",
month = oct,
doi = "10.1117/12.2575310",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Xuping Zhang and Baojun Li and Changyuan Yu and Xinliang Zhang",
booktitle = "Optoelectronic Devices and Integration IX",
address = "United States",
}