Dynamic strain measurement system with fiber Bragg gratings and noise mitigation techniques

D. Tosi, M. Olivero, G. Perrone

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A low-cost fiber Bragg grating (FBG) vibrometer specifically suited for structural monitoring and aimed at the detection of low-amplitude vibrations is presented. The optical system exploits an intensity modulation principle of operation, while signal processing techniques are used to complement the transducer to improve the performances: a recursive least-squares adaptive filter improves the noise power mitigation by 14 dB, and an efficient spectral estimator permits operating spectral analysis even under high noise conditions. With these methods, a strain sensitivity of 5.6 nε has been achieved in the 60 νε range. Experimental assessment tests carried out in typical structural monitoring contexts have demonstrated that the developed sensor is well suited to measure mechanical perturbations of different structures.

Original languageEnglish
Article number065203
JournalMeasurement Science and Technology
Volume20
Issue number6
DOIs
Publication statusPublished - 2009
Externally publishedYes

Fingerprint

Strain Measurement
strain measurement
Strain measurement
Fiber Grating
Fiber Bragg gratings
Bragg Grating
Measurement System
Bragg gratings
Monitoring
adaptive filters
vibration meters
fibers
Adaptive Filter
Adaptive filters
Spectral Analysis
Transducer
estimators
Optical systems
complement
Optical System

Keywords

  • Adaptive signal processing
  • Estimation
  • Optical fiber sensors

ASJC Scopus subject areas

  • Applied Mathematics
  • Instrumentation

Cite this

Dynamic strain measurement system with fiber Bragg gratings and noise mitigation techniques. / Tosi, D.; Olivero, M.; Perrone, G.

In: Measurement Science and Technology, Vol. 20, No. 6, 065203, 2009.

Research output: Contribution to journalArticle

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