基于田口方法的高均匀度家庭植物工厂LED光源设计

LED Light Source Design of Family Plant Factory Based on Taguchi Method

为满足家庭植物工厂的照明需求,本文提出一种通过增加光程来提高照度均匀度和混色均匀度的方案。方案采用棱柱顶表面LED光源和侧壁漫反射面的组合增加光程,提高光线的耦合程度从而达到提高混光均匀度和照度均匀度的目的。实验采用田口方法简化实验过程并借助TracePro软件对模型的光学结构进行仿真,再利用变异数分析法(Analysis of Variance,ANOVA)理论对各影响因子对品质的影响程度进行分析并优化对照度均匀度和混色均匀度影响最大的因子。最终得到了三棱柱棱到顶部距离为200 mm、LED数量为24个和LED排列方式为整列间隔的最优方案,照度均匀度达到89.94%、混色均匀度达到90%。

In order to meet the lighting needs of the family plant factory,this paper proposes a programme to improve the illumination uniformity and color-mixed uniformity by increasing the optical path.The programme uses LED light source on the top surface of prism and diffuse reflection surface on the side wall to increase the optical path and improve the coupling degree of light,so as to achieve the purpose of improving the illumination uniformity and color-mixed uniformity.The Taguchi method was applied to simplify the experimental process,and TracePro software was used to simulate the optical structure of the model.Then the influence degree of each influence factor on the quality was analyzed by using the ANOVA(Analysis of Variance)theory,and the factors that have the greatest influence on the illumination uniformity and color-mixed uniformity were deeply optimized.The results show when the distance from the prism to the top is 200 mm,the number of LEDs is 24,and the arrangement of LEDs is the whole column spacing,the uniformity is the best.Then the illumination uniformity is 89.94%,and the color mixing uniformity is 90%.