半导体光电, 2016, 37 (6): 902, 网络出版: 2016-12-30
菲涅尔透镜聚焦光斑能流密度分布检测方法
Detection Method for Energy Flux Density Distribution of Fresnel Lens Focal Spot
菲涅尔透镜 聚焦光斑 能流密度分布 灰度图像 检测 fresnel lens focal spot energy flux density distribution gray scale image detection
摘要
提出了一种间接检测聚光光伏发电系统中菲涅透镜聚焦光斑能流密度分布的方法, 搭建了检测实验装置, 通过标定相机像素灰度值与聚焦光斑能流密度值的比例因子k, 介绍了从聚焦光斑灰度图提取光斑能流密度分布的具体过程。对检测精度进行了验证, 结果表明: 采用该检测方法得到的光斑峰值能流密度相对误差小于2.1%。该方法具有操作简单、检测精度高的优点, 可广泛应用于聚光光伏发电聚焦光斑的能流密度分布的检测。
Abstract
A indirect detection method for energy flux density distribution of fresnel lens focal spot in concentration photovoltaic system was proposed, an experimental apparatus for detection was built. The specific process of extracting the spot energy flow density distribution from fresnel lens focal spot gray scale image was introduced in detail after the scaling factor k between the pixel gray values of the camera and the flux density was demarcated. The detection precision of this method was verified. The results indicat that, the relative error of peak value energy flow density detected by this method is less than 2.1%. This method has advantages of easy operation and high accuracy which can been widely applied in detecting for energy flux density distribution of fresnel lens focal spot in concentration photovoltaic system.
王进军, 王侠. 菲涅尔透镜聚焦光斑能流密度分布检测方法[J]. 半导体光电, 2016, 37(6): 902. WANG Jinjun, WANG Xia. Detection Method for Energy Flux Density Distribution of Fresnel Lens Focal Spot[J]. Semiconductor Optoelectronics, 2016, 37(6): 902.