Open AccessMechanism of dual-wavelength anti-jamming photoelectric smoke-detection
Author(s) -
Wei Sun,
Deng Xiao-jiu,
Yaodong Li,
Yongming Zhang,
Zheng Sai-Jing,
Wang Wei-Miao
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.030201
Subject(s) - smoke , wavelength , scattering , materials science , photoelectric effect , light scattering , mie scattering , matrix (chemical analysis) , optics , optoelectronics , physics , meteorology , composite material
Using the T-matrix method, detailed numerical computation and comparative analysis on the distributions of light scattering matrix of fire smoke particles and non-fire smoke particles are carried out. The results show that when the wavelength of incident light changes, the degrees of variation on elements of fire smoke particles are different from those of non-fire smoke particles. By using dual-wavelength pulsed laser as incident ligh, through detecting appropriate element of light scattering matrix and combining XOR logical operation, the fire smoke particles can be distinguished from non-fire smoke particles, thereby reducing the misinformation caused by non-fire smoke particles.