发光学报2017，Vol.38Issue(9)：1249-1255,7.DOI:10.3788/fgxb20173809.1249
功率型白光LED的非线性混合调光方法
Nonlinear Mixed-dimming Method for Power White LED
摘要
Abstract
A nonlinear mathematical model of the relationship between the luminous flux and the color temperature of the hybrid light source is established by analyzing the hybrid dimming method of pulse width modulation (PWM) dual channel output white LED.The system uses ZigBee wireless communication module CC2530 as a dual PWM output control to SN3350 as the core of the LED constant current drive power.It achieves a duty cycle adjustable warm white and cool white two white LED color temperature and luminous flux mixed dimming control.Experiments were carried out using a high-precision, fast spectroradiometer (HAAS-2000) test system.Experimental results show that the dual PWM can achieve better control of LED color temperature and luminous flux, and the correlated color temperature of the mixed light source can be continuously adjusted in the range of 3 250 K to 15 000 K.The relative errors of theoretical calculation and system control are less than 1.70% and 8.50%, respectively, corresponding to the luminous flux and color temperature.关键词
动态照明控制/LED混合调光/非线性调光/脉冲宽度调制Key words
dynamic lighting control/LED mixed dimming/nonlinear mixed dimming/pulse width modulation(PWM)分类
信息技术与安全科学引用本文复制引用
周锦荣..功率型白光LED的非线性混合调光方法[J].发光学报,2017,38(9):1249-1255,7.基金项目
福建省自然科学基金(2016J01758) （2016J01758）
福建省资助省属高校科研专项(JK2016026) （JK2016026）
福建省教育厅科技项目(JAT160284)资助Supported by Natural Science Foundation of Fujian Province(2016J01758) （JAT160284）
Special Scientific Research Project of Provincial Universities of Fujian Province(JK2016026) （JK2016026）
Science Project of Education Bureau of Fujian Province(JAT160284) （JAT160284）
