摘要
针对室内空气中颗粒状污染物流动特性的测量搭建了PTV测量系统,该系统由白光照明、CCD摄像头采集图像及四轨迹像点匹配算法软件构成。测量结果表明,该PTV系统具有测量室内空气中可吸入颗粒扩散与流动的速度分布、浓度分布等特性。
A simple measurement system was developed using CCD camera, image processing and PTV （PTV： Particle Tracking Velocimetry） techniques to measure the velocities and concentration distribution of inhalable particle in indoor air. The photographic system included illuminations of white light and CCD camera （30fps） could capture successive particle images. Based on Four- Consecutive- Time - Step Method, the software system of PTV was improved image point matching algorithms for motion particles, various image 7 processing algorithms. The results show that the inhalale particles can image for illuminate of white light and the system was successful used to effectively measure velocities and concentration distribution of inhalable particle in indoor air.
出处
《中国环境监测》
CAS
CSCD
北大核心
2008年第1期46-50,共5页
Environmental Monitoring in China
