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 language | English |
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| Title of host publication | Optical Measurement Systems for Industrial Inspection VIII |
| DOIs | |
| Publication status | Published - Aug 1 2013 |
| Event | Optical Measurement Systems for Industrial Inspection VIII - Munich, Germany Duration: May 13 2013 → May 16 2013 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 8788 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Other
| Other | Optical Measurement Systems for Industrial Inspection VIII |
|---|---|
| Country | Germany |
| City | Munich |
| Period | 5/13/13 → 5/16/13 |
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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
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
Tosi, D., Olivero, M., Perrone, G., & Vallan, A. (2013). High-frequency optical fiber microphone for condition-based maintenance application. In Optical Measurement Systems for Industrial Inspection VIII [87880Z] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8788). https://doi.org/10.1117/12.2019249