| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 100 === The purpose of the thesis is to study the optimized luminous distribution with numerical analysis of indoor lighting fixtures. According to the point-by-point method, we build the relationship of mathematical equations between the light sources and every point of work surface. The illuminance uniformity is defined to be constraint, and we use the Gauss-Seidel iterative method and Fixed-Point iterative method to derive the equation of the best luminous intensity distribution. There are three kinds of fixtures as original models were studied, including narrow type, middle type, and wide type. All of them are simulated to the different area lighting design, thus small, medium and large environment, respectively. By using the MATLAB to simulate and calculate, the ideal luminous distribution, called bat wing luminous distribution for uniformity oriented can be obtained.
In addition, the lighting design software “DIALux” is applied to evaluate the indoor lighting for a single light source, and then we analyze the original light sources and the iterated light sources by MATLAB. Compared the results from original luminaire and the iterated luminaire, we verify that the iterated luminaires by MATLAB are much better than original luminaires. Besides, we not only simulate a single luminaire, but also simulate for mult- luminaires. Finally, the proposed designs were simulated for two kinds of different fixtures by commercial software DIALux. For systematical evaluation, an environment 12m*9m*3m, average illuminance 500Lux, and illuminance uniformity 0.5 is as set to be the conditions. The results contains the number of luminaries, unit lighting power density, illuminance uniformity and so on were computed. As a result of comparing the overall performance of various types of luminaries, we can raise the lighting quality and decrease the number of luminaries to arrive the save energy purpose.
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