| Keywords |
Simulation method ; Photosensor illuminance ; Daylight conditions ; Computational theory ; Field measurement |
| Abstract |
This study proposes a simulation method for effective prediction of photosensor illuminance under various daylight conditions. Computational theory for simulation was developed and prediction results by the simulations were validated against field measurement results. Results indicate that difference range between simulation and measurement was wide when direct component of daylight was strong. The absolute difference range under overcast sky was narrow compared with that under clear and partly cloudy sky. Correlation between simulated and measured illuminance was strong. Linear relationship between them was strongest under clear sky and weakest under overcast sky conditions. Regression models for the difference was acceptable under a low significance level. |