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27 August 2008 Acoustic and thermal characterization of a forest fire event
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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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. X. Viegas, L. P. Pita, F. Nielsen, K. Haddad, C. Calisti Tassini, G. D'Altrui, V. Quaranta, and I. Dimino "Acoustic and thermal characterization of a forest fire event", Proc. SPIE 7089, Remote Sensing of Fire: Science and Application, 708904 (27 August 2008);


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