Citation

Li C, Zhou Y. China Saf. Sci. J. 2022; 32(4): 93-98.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.04.014

PMID

unavailable

Abstract

In order to avoid false alarm in airplane cargos caused by dust and other aerosols in the air, a fire detection method based on multi⁃wavelength and multi⁃observation angle was proposed. Asymmetry ratio (ratio of forward to backward scattered signals) of Li⁃ion battery fire smoke and nuisance aerosols (ISO 12103-1 A1 dust, ISO 12103-1 A2 dust, Dolomite 90 dust, water mist) was obtained through experiments, and then used to distinguish the fire smoke and the aerosol. The results show that when the wavelength is 405 nm, the asymmetric ratio to distinguish the two is 7. 25-10. 54, which will be 6. 56-6. 82 for the wavelength of 870 nm. © 2020 China Safety Science Journal. All rights reserved.

Language: zh