High-frequency optical fiber microphone for condition-based maintenance application

Daniele Tosi, Massimo Olivero, Guido Perrone, Alberto Vallan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A low-cost optical fiber Bragg grating-based microphone is presented. The sensing system makes use of an intensitybased interrogation approach, with a fixed-wavelength laser source employed as optical source. The optical sensor is complemented by signal processing, consisting of adaptive filters and a Capon power spectral density estimator. System characterization has been carried out, showing maximum sensitivity in the 120-450 Hz range, with 0.45 Hz repeatability on single-tone detection. Application for condition-based maintenance of industrial plants, based on a simulated model, is discussed.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8788
DOIs
Publication statusPublished - 2013
Externally publishedYes
EventOptical Measurement Systems for Industrial Inspection VIII - Munich, Germany
Duration: May 13 2013May 16 2013

Other

OtherOptical Measurement Systems for Industrial Inspection VIII
CountryGermany
CityMunich
Period5/13/135/16/13

Fingerprint

Condition-based Maintenance
Microphones
microphones
Optical Fiber
maintenance
Light sources
Optical fibers
optical fibers
adaptive filters
Density Estimator
Adaptive Filter
Power Spectral Density
Optical Sensor
interrogation
Repeatability
Power spectral density
Optical sensors
Adaptive filters
Fiber Grating
optical measuring instruments

Keywords

  • Acoustic optical transducer
  • Condition based maintenance (CBM)
  • FBG sensor
  • Fiber Bragg grating (FBG)
  • Fiber optic sensors (FOS)
  • Frequency spectrum estimation
  • Optical microphone

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Tosi, D., Olivero, M., Perrone, G., & Vallan, A. (2013). High-frequency optical fiber microphone for condition-based maintenance application. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8788). [87880Z] https://doi.org/10.1117/12.2019249

High-frequency optical fiber microphone for condition-based maintenance application. / Tosi, Daniele; Olivero, Massimo; Perrone, Guido; Vallan, Alberto.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8788 2013. 87880Z.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tosi, D, Olivero, M, Perrone, G & Vallan, A 2013, High-frequency optical fiber microphone for condition-based maintenance application. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8788, 87880Z, Optical Measurement Systems for Industrial Inspection VIII, Munich, Germany, 5/13/13. https://doi.org/10.1117/12.2019249
Tosi D, Olivero M, Perrone G, Vallan A. High-frequency optical fiber microphone for condition-based maintenance application. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8788. 2013. 87880Z https://doi.org/10.1117/12.2019249
Tosi, Daniele ; Olivero, Massimo ; Perrone, Guido ; Vallan, Alberto. / High-frequency optical fiber microphone for condition-based maintenance application. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8788 2013.
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