摘要
为了在现有研究基础上使LED阵列光源的照度均匀度进一步提高,提出了一种新的LED阵列优化途径。根据Ivan Moreno提出的二维LED阵列优化设计方法,本文设计了以两种不同方式分布排列的二维优化LED阵列。利用果蝇优化算法对二维优化LED阵列芯片的位置参数进行进一步优化,实现LED阵列位置参数的三维空间的优化设计,使LED阵列光源的照度均匀度更优。使用Trace Pro对LED阵列的三维优化结果进行验证。研究结果表明,基于果蝇优化算法,经三维优化后的圆形LED阵列的照度均匀度可达到96.0%,相较于二维优化后的圆形LED阵列提高了25.3%;经三维优化后的正方形LED阵列的照度均匀度可达到97.4%,相较于二维优化后的正方形LED阵列提高了7.7%。该优化方法被证明是可行的,相较于传统优化方法,该方法节约了大量人力物力成本。
In order to improve the illumination uniformity of LED array light source,a new way to design 3 D LED arrays was proposed. At first,the formulas of LED array＇s illuminance on the target panel were derived and a mathematical model was then deduced in order to measure LED array＇s illumination uniformity. Then,a 2 D circular LED array and a 2 D square array were designed based on the way put forward by Ivan Moreno. The spatial positional parameters of the LEDs in the arrays were further optimized by the fruit fly optimization algorithm,and the standard deviation of illuminance on target panel was set as the taste concentration decision function of fruit fly optimization algorithm. The lower value the taste concentration decision function could obtain, the higherilluminance uniformity the optimized 3 D LED array would have. The whole simulation process was carried on by the MATLAB software. In this way,the three-dimensional optimization of LEDs＇ locations in the arrays was accomplished,which made the illumination uniformity of the LED arrays much higher. At last,the Trace Pro optical software was adopted to imitate and test the illuminating effect of the optimized 3 D arrays. The results of this experiment show that,after being optimized by the fruit fly optimization algorithm,the illumination uniformity of the optimized 3 D circular LED array increased to 96. 0%,which is 25. 3% higher than the optimized 2 D one,and that the illumination uniformity of the optimized 3 D square LED array increased to 97. 4%,which is 7. 7% higher than the optimized 2 D one. The results prove that this new optimization method is practicable,and compared to the traditional optimization methods,this new method is more efficient as the LED arrays are allowed to be optimized automatically by computer program,which greatly reduce the cost of time,material and manpower.
作者
何果
文尚胜
符民
唐浩洲
钟惠婷
康丽娟
HE Guo;WEN Shang-sheng;FU Min;TANG Hao-zhou;ZHONG Hui-ting;KANG Li-juan(School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China;State Key Laboratory of Luminescence Materials and Devices,South China University of Technology,Guangzhou 510640,China;National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology,Guangzhou 510640,China;School of Fine Arts,South China Normal University,Guangzhou 510631,China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2018年第8期1128-1135,共8页
Chinese Journal of Luminescence
基金
广东省及广州市科技项目(2015YT02C093
2015B010134001
2015B010127004
201604040004
201604016010
201704030140
2017B010114001
2016A1009)资助~~
关键词
LED阵列
果蝇优化算法
照度均匀度
优化
LED array
fruit fly optimization algorithm
illumination uniformity
optimization
