温室植物生产用LED组合光源的优化设计  

Optimal design of LED assembled light source used in the production of greenhouse plant

作　　者：周国泉[1] 郑军[1] 周益民[1] 储修祥[1] 倪涌舟[1] 

机构地区：[1]浙江林学院理学院,浙江临安311300

出　　处：《光电子．激光》2008年第10期1319-1323,共5页Journal of Optoelectronics·Laser

基　　金：浙江省科技计划资助项目(2007C22064)

摘　　要：基于温室植物光合作用的光需求,通过分析单颗红、蓝光LED的特性,选择合适的红、蓝光LED。出于工程上自动控制之需要,LED组合光源为行、列数各为8的方阵,采用两种不同形式之排列。方案一为红光LED、蓝光LED均匀间隔整行排列,方案二为每行每列中红、蓝光LED交错均匀排列;其中LED的间距可调。以点光源模型简化单颗LED来计算LED组合光源的空间光照度和光质。数值计算表明:方案二优于方案一,其照明区域内的红、蓝光光通量比除边缘外基本均匀一致;LED的间隔以不超过LED大小的一半为限。模块化设计的LED组合光源具有快速安装、更换和拼装的优点。具体对于阴性植物和中性植物,红、蓝光光通量比还可以通过调节红、蓝光LED的工作电流而加以调控。Based on the optical demand of photosynthesis for greenhouse plant, the appropriate red and blue LEDs are separately sdected by analyzing the properties of single red and blue LEDs. A phalanx with 8 lines and 8 rows is adopted,and two different arrangements are designed. One is that red and blue LEDs are uniformly and intervallic arranged in full line. The other is that red and blue LEDs are uniformly cross-arranged in every line and row. Moreover, the distance between LEDs can be adjustable. To calculate the illuminance and light quality of LED assembled light source,the LED is simplified to be a model of point light source. The numerical calculations show that the second scheme is better than first one because. the ratio of photon fluxes of red and blue light is uniform in the illumination area except the edges,and the distance between LEDs should not exceed the radius of LED.

关 键 词：人工光源 LED 优化设计 

分 类 号：TN312.8[电子电信—物理电子学]