为了提高LED植物光源的有效利用率, 基于Taguchi的实验方法对LED植物红蓝光源阵列进行设计和优化。用MATLAB软件编程进行仿真模拟, 通过ANOVA方法分析得出对植物光源照射距离为10 cm处的红蓝光的光子数比值(R/B)分布均匀度影响最大的因子, 并对试验最优结果采用TracePro光学软件进行试验验证, 从而获得本次试验最佳的参数组合。结果表明: 曲率半径为50 mm的凹形曲面底板的圆心加点排布方式, 圆心为LED蓝光芯片, 圆环上为LED红光芯片, 芯片数量分别为6个LED红光芯片和1个LED蓝光芯片, 芯片距离为10 mm的最优化组合是本次试验的最优组合。通过ANOVA方法分析得出, LED红蓝芯片之间的间距对植物光源的R/B的均匀分布影响最大, 占有35.17%的比例, LED红蓝芯片的排布方式也不可忽略, 因为其占有了28.05%的影响比例。

In order to improve the efficiency of LED plant light source, the LED array of red and blue light source was designed and optimized based on Taguchi method. The work was simulated by MATLAB software, then the largest influential factor which influenced on the ratio distribution of red and blue light photon numbers (R/B) at a distance of 10 cm from the plant light source was analyzed by ANOVA method. At last, the best results were tested by TracePro optics software. The results show that the optimal combination consists by the arrangement of one blue LED chip on the center and six red LED chips on the ring on the concave surface with the curvature radius of 50 mm, and the distance of LED chips is 10 mm. The distance of LED chips has the greatest impact on the distribution of R/B , accounting for 35.17%. Of course, the arrangement of LED chips can not be ignored, because it occupies 28.05% of the impact of the ratio.