激光片光前向散射法测量烟雾颗粒尺寸分布  

Measurement of Smoke Particle Size Distribution by the Near-Forward Scattering Light Of Laser Sheet

作　　者：徐琼[1] 袁宏永[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《火灾科学》2003年第2期95-99,共5页Fire Safety Science

基　　金：国家重点基础研究专项经费(973)项目(2001CB409608)

摘　　要：提出了一种利用激光片光CCD成像测量火灾烟雾颗粒粒径的方法,结合Mie散射理论确定了采取前向散射成像的方法测量烟雾颗粒尺寸分布,针对摄影测量过程中的成像形变,给出了结合数字摄影测量DLT技术进行数字校正的方法,并对实验方法和结果进行了分析与讨论。Current work presents a method to measure the smoke particle size distribution by the near-forward scattering light of laser sheet based on Mie scattering theory. An algorithm to correct the image deformation using DLT method was brought forward. The particle size distributions of several types of fire smoke were measured and one of the results was analyzed. Some error-causing factors were discussed. 

关 键 词：散射 片光源 测量 形变 火灾 烟雾颗粒 粒径 

分 类 号：X45[环境科学与工程—灾害防治] X924.4