High speed, high-resolution fiber Bragg grating sensing system for monitoring of weigh-in-motion devices

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

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

Abstract

We present a fast high-resolution fiber Bragg grating sensing system for weigh-in-motion (WIM) application. The proposed system makes use of standard telecom photonics components operating at high speed and with insufficient resolution; then, using signal processing we artificially improve the accuracy of the system down to 1 με. This way, the proposed architecture overcomes the state of the art of optical systems for WIM, which cannot cope with both high resolution and high frequency requirements. The developed system has been applied to a prototype weigh-in-motion device, which consists of a road speed bump. Structural deformations of the bump when perturbed by a thin-footmark load are well reproduced. Using multiple Bragg grating sensors, it is possible to unambiguously determine position and weight of a moving load on the bump with accuracy of 0.2 - 1.2 kg.

Original languageEnglish
Title of host publication21st International Conference on Optical Fiber Sensors
DOIs
Publication statusPublished - Jun 9 2011
Externally publishedYes
Event21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada
Duration: May 15 2011May 19 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7753
ISSN (Print)0277-786X

Other

Other21st International Conference on Optical Fiber Sensors
CountryCanada
CityOttawa, ON
Period5/15/115/19/11

Keywords

  • Fiber Bragg grating (FBG)
  • fiber optic sensors (FOS)
  • weigh-in-motion (WIM)

ASJC Scopus subject areas

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

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  • Cite this

    Tosi, D., Olivero, M., Perrone, G., & Vallan, A. (2011). High speed, high-resolution fiber Bragg grating sensing system for monitoring of weigh-in-motion devices. In 21st International Conference on Optical Fiber Sensors [77538C] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7753). https://doi.org/10.1117/12.884864