Fiber Bragg grating microphone system for condition-based maintenance of industrial facilities

D. Tosi; M. Olivero; G. Perrone; A. Vallan

doi:10.1117/12.884853

18 May 2011 Fiber Bragg grating microphone system for condition-based maintenance of industrial facilities

D. Tosi, M. Olivero, G. Perrone, A. Vallan

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77538B (2011) https://doi.org/10.1117/12.884853
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

This paper presents a multipoint fiber Bragg grating (FBG) sensing system operating as a precision microphone. This instrument aims to become the best performing technology for condition-based maintenance (CBM) of critical elements, like ball bearings and cogwheels, embedded in industrial manufacturing machineries. The system architecture is based on the simple matched-laser principle, leading to a low-cost and high-sensitivity system, operating in time and wavelength multiplexing mode. Then, heavy signal processing is applied, providing an outstanding performance improvement of 59 dB in terms of signal-to-noise ratio. A demonstration of condition-based maintenance operation has been performed using standard models of ball bearing sound spectra. Compared to traditional microphones applied to CBM, the signal processing-powered FBG system provides remarkable advantages in terms of sensitivity and rejection of environment noise, providing an improvement of cost-effectiveness of CBM.

Citation Download Citation

D. Tosi, M. Olivero, G. Perrone, and A. Vallan "Fiber Bragg grating microphone system for condition-based maintenance of industrial facilities", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538B (18 May 2011); https://doi.org/10.1117/12.884853

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available