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Proceedings Paper

Acoustic and thermal characterization of a forest fire event
Author(s): D. X. Viegas; L. P. Pita; F. Nielsen; K. Haddad; C. Calisti Tassini; G. D'Altrui; V. Quaranta; I. Dimino
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Paper Abstract

In this paper, a methodology to perform thermal and acoustic characterization of a forest fire event is reported. The analysis of fire emission properties has been carried out through laboratory and field testing, consisted in the burning of different fuels placed on tables or on field plots. The objectives of the trials have been the evaluation of fire radiated heat to fiber optic sensors with cables in open air, buried or inside the flames, and the evaluation of fire acoustic spectra, with respect to the different fuel types and fire conditions. Post processing algorithms on acquired acoustic signals have been developed to evaluate the fire frequency content, which defines the signature of the fire noise; the results obtained have confirmed the main spectrum features reported in literature. The measurement of temperature variations by fiber optic sensors has been useful to characterize sensors behavior with respect to fire, wind and smoke. The results of the tests have been used in the design phase of a new fire monitoring system made up of acoustic sensors, able to detect and track fires from the beginning, and fiber optic sensors, for a capillary monitoring of temperature in forest areas.

Paper Details

Date Published: 27 August 2008
PDF: 12 pages
Proc. SPIE 7089, Remote Sensing of Fire: Science and Application, 708904 (27 August 2008); doi: 10.1117/12.794601
Show Author Affiliations
D. X. Viegas, Association for the Development of Industrial Aerodynamics (Portugal)
L. P. Pita, Association for the Development of Industrial Aerodynamics (Portugal)
F. Nielsen, Brüel & Kjær Sound & Vibration (Denmark)
K. Haddad, Brüel & Kjær Sound & Vibration (Denmark)
C. Calisti Tassini, D'Appolonia S.p.A. (Italy)
G. D'Altrui, D'Appolonia S.p.A. (Italy)
V. Quaranta, Italian Aerospace Research Ctr. (Italy)
I. Dimino, Italian Aerospace Research Ctr. (Italy)


Published in SPIE Proceedings Vol. 7089:
Remote Sensing of Fire: Science and Application
Wei Min Hao, Editor(s)

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