太阳光合有效辐射光谱分布模拟系统  

Natural Distribution of Spectrum Simulation System

作　　者：于海业[1] 王永志[1,2] 王越勇[1] 

机构地区：[1]吉林大学生物与农业工程学院,长春130022 [2]吉林工商学院,长春130062

出　　处：《农机化研究》2009年第8期80-83,共4页Journal of Agricultural Mechanization Research

摘　　要：根据照射到地球表面的太阳光光谱分布情况,利用不同峰值波长的发光二极管(LED)研制了可以动态调整模拟太阳光的光源系统。该系统利用多种LED进行适当的波长匹配,模拟了太阳光从可见光到红外光的照射范围。同时自主开发了电源调控器,采用脉宽调制技术(PWM)来调节LED的光照强度,可以对确定波长范围内的照射光强度进行调节,实现动态控制光谱分布辐射的目的。system that Matching a the infrared trary in the Based on spectrum distribution of the sunlight eradiate to the Earth＇s surface, we have developed a light source can adjust the distribution of spectrum by different peak wavelength of the light - emitting diode （LED）. variety Of appropriate wavelength LED, The present system simulated sunlight from the visible light range to light. At the same time, by pulse -width modulation （PWM）, the LED light intensity can be regulate arbirange and simulate spectral distribution of the sunlight on time.

关 键 词：光谱分布 LED 脉宽调制PWM 光谱辐照度 直流电源调控器 

分 类 号：S123[农业科学—农业基础科学]