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Development of a Digital Optical Measurement System for Analysis of AerosolSpatial Distribution in the Indoor Environment

机译:室内环境中气溶胶空间分布数字光学测量系统的研制

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A new technique to measure spatial distributions of aerosols in rooms ispresented. This measurement system is based on Particle Image Velocimetry (PIV), which has non-intrusive, simultaneous, and whole field measurement features. In this quantitative flow determination, tracer particles and surrogate aerosols are introduced into the indoor air, illuminated by a light sheet,and photographed. Image shifting is used to determine the direction of particle movement. The digital images are processed automatically by image interrogation techniques. The particle size, the concentration spatial distribution, and a two-dimensional velocity vector map can be obtained by applying different data analysis techniques and calibration procedures.

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