Development of the Standard Daylight Source Model Based on the Cloud Property and Estimation of the Solar Energy by the Geostational Meteological Satellite Images.

研究的目的是：1)建立利用气象测量的大气参数来表达天气、时间和季节波动的日光源模型。2)提高自己基于静止气象卫星图像的准实时日光模型的精度。3)建立尽可能利用自然光的可持续日光照明，为人们提供舒适的光环境，减少二氧化碳的排放。在两年的时间里，进行了以下研究：a)每隔5分钟自动测量云量：使用我自己的视频比色技术，用分光比色计对带有鱼眼镜头的数码相机进行色度校准。整个天空被捕获为圆形天空图像，该图像被转换为亮度分布和相关色温的绝对值。使用亮度阈值和相关co…来计算云量B)60分钟间隔天空亮度分布的估计：建立了新的天空亮度模型。该模式由气溶胶的光学散射、折射和反射过程组成。大气参数由地球静止气象卫星图像决定。c)与天空亮度分布同时运行的日光控制系统的开发：通过使用另一台带鱼眼镜头的数码相机测量天空亮度分布，计算出有窗户的房间内的照度分布。最小人工照明被调暗，以增加与标准照度要求相比的照度不足。实验证明了该系统的可行性。D)将卫星云图建立的天光亮度模型与上述日光控制系统相结合：虽然60分钟间隔比数码相机长，但地球静止气象卫星云图覆盖全球。其初始成本和运行成本均低于光传感器。仿真结果表明，该联合收割机系统能够控制环境照明。较少

The purposes of the research are as follows :1)To develop the daylight source model which expresses the fluctuations of weather, time, and season by the meteorologically measured atmospheric parameters.2)To improve the accuracy of my own quasi-real time daylight model based on the geostationary meteorological satellite images.3)To establish the "Sustainable Daylighting" which utilizes the natural light as much as possible, provides the comfortable luminous environment to the people, and reduce the CO2 emission.In two years, the following research were conducted :a)Automatic cloud amount measurement with 5 minutes intervals : A digital camera with a fisheye lens is colorimetrically calibrated by a spectro-colorimeter using my own Video-Colorimetry technique. The whole sky is captured as a circle sky image which is converted to the absolute values of distributions of luminance and correlated color temperature. The cloud amount is counted with the thresholds of luminance and correlated co … More lor temperature.b)Estimation of the sky luminance distribution with 60 minutes intervals: The new sky luminance model is developed. The model is composed of optical scattaring, refraction and reflection processes of aerosol. The atmospheric parameters are decided by the geostationary meteorological satellite images.c)Development of the daylight control system operating simultaneously with the sky luminance distribution : By measuring the sky luminance distribution using the another digital camera with a fisheye lens, the illuminance distribution in a room with windows are calculated. The minimum artificial lightings are dimmed to add the shortfall of the illuminance compared to the standard illuminance requirement. The experiment appealed the feasibility of the system. The simulation using annual measured data of sky luminance showed about 50% of electric power could be saved.d) Combine of the sky luminance model by the satellite images and daylight control system above mentioned : Though 60 minutes intervals is longer than the digital camera, the geostationary meteorological satellite images cover the world. The initial and running costs are lower than light sensors. The simulations showed that ambient lightings are able to be controlled by the combine system. Less