Low-cost fiber bragg grating vibroacoustic sensor for voice and heartbeat detection

Daniele Tosi; Massimo Olivero; Guido Perrone

doi:10.1364/AO.47.005123

Low-cost fiber bragg grating vibroacoustic sensor for voice and heartbeat detection

Daniele Tosi, Massimo Olivero, Guido Perrone

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

A fiber Bragg grating (FBG) -vibroacoustic sensor exploiting an intensity-based interrogation principle is presented. The optical system is complemented by signal processing techniques that allow disturbances to be mitigated and improve the spectral estimation. The sensor is capable of performing frequency analysis of sounds up to 3 kHz, with top sensitivity in the 100-500 Hz frequency range, and of dynamically tracking pulsed phenomena that induce a strain to the FBG. The sensor has been applied to the detection of voice, showing a great intelligibility of the speech despite the low-quality environment, and to the monitoring of the heartbeat rate from the wrist.

Original language	English
Pages (from-to)	5123-5129
Number of pages	7
Journal	Applied Optics
Volume	47
Issue number	28
DOIs	https://doi.org/10.1364/AO.47.005123
Publication status	Published - Oct 1 2008

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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Low-cost fiber bragg grating vibroacoustic sensor for voice and heartbeat detection

Abstract

ASJC Scopus subject areas

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