基于CIE天空模型计算任意时间天空亮度分布  

Calculation of Sky Luminance Distribution at Arbitrary Time Based on the CIE Sky Model

作　　者：吴玉香[1] 刘春燕[1] 文尚胜[2,3] 

机构地区：[1]华南理工大学自动化科学与工程学院,广东广州510641 [2]华南理工大学材料科学与工程学院,广东广州510641 [3]华南理工大学发光材料与器件国家重点实验室,广东广州510641

出　　处：《光学学报》2014年第11期27-33,共7页Acta Optica Sinica

基　　金：广东省科技厅重大科技专项(2011A080801016);广东省战略性新兴产业专项(2011A081301017;2012A080304012;2012A080304001);广州市科技计划项目(2013J4300021)

摘　　要：掌握任意时间天空亮度的分布情况是充分利用自然光、实现智能照明的基础。以国际照明委员会(CIE)15种天空类型及其给出的天空亮度计算公式为基础,对天空亮度计算公式中各个参数的计算方法进行了研究。使用这一计算方法,只需知道当地的经纬度、日期以及当前天空属于哪种天空类型,就可计算出其任意时间的天空亮度分布。从已有的可靠的天空亮度分布实测数据出发,将天空亮度分布的计算值与实测值进行比较,分析了计算值与实测值之间的误差。结果表明,通过计算得出的天空亮度分布数据能较好地与实测数据相吻合,因此可以用天空亮度分布的计算值代替实测值作为节能调光的重要数据。Knowing the distribution of sky luminance at any time is the foundation to make full use of natural light and realize intelligent lighting. Based on the CIE 15 sky types and the sky luminance formula, calculation methods of the parameters in the sky luminance formula are studied. Using this method, we only need to know the local latitude, date and sky type that the sky belongs to, and the distribution of sky luminance at any time can be calculated. Based on the existing reliable measured data of sky luminance distribution, the calculated values of the sky luminance distribution and the measured values are compared, and the differences between the calculated and measured values are analyzed. The results show that, the calculated data of the sky luminance distribution are in good agreement with the measured data, so the measured data can be replaced by the calculated data as important data for the energy- saving light regulating.

关 键 词：大气光学 天空亮度分布 参数计算 CIE天空模型 

分 类 号：P422[天文地球—大气科学及气象学]