基于光流法的云层测速新方法  

NEW METHOD TO MEASURE MOVING VELOCITY OF CLOUDS BASED ON OPTICAL FLOW

作　　者：周水良 祝雪妹[1] 

机构地区：[1]南京师范大学电气与自动化工程学院,南京210042

出　　处：《太阳能学报》2017年第12期3348-3354,共7页Acta Energiae Solaris Sinica

基　　金：国家高技术研究发展(863)计划(2013AA050201);江苏省普通高校专业学位研究生创新计划(SJLX15_0308)

摘　　要：针对太阳能发电中的云层遮挡问题,提出一种基于光流法的云层测速方法。首先,利用广角摄像机对天空图像进行采集,其次运用光流法检测天空云层运动,并建立运动矢量的分布图,最后通过帧与帧之间对应特征点的位移大小计算云层运动速度和角度。并以塔式太阳能热发电系统为例进行实验研究,实验结果表明该方法的有效性,为实现我国太阳能资源的高效合理利用提供应用基础。Aiming at clouds covering issues in the solar power system, a new method to measure moving velocity was put forward based on optical flow method. Firstly, a wide-angle camera was used to capture sky images. Then, the optical flow method was used to detect the moving clouds in the sky and set up motion vector distribution diagram. At last, the moving speed and direction of clouds could be calculated by the displacement of the corresponding feature points between frames. In the case of solar tower power system, the experimental results show the effectiveness of the method, which will provide the technological foundation to achieve high efficiency utilization of solar energy in China.

关 键 词：云遮挡 光流法 运动矢量 测速 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]