Spectroscopy and Spectral Analysis, Volume. 34, Issue 11, 2912(2014)
Photoelectric Parametric Test System of LED Based on Virtual Instrument
The standardized measuring principle, requirements and implementations of the above parameters of LEDs were researched and analyzed in the present paper. Then a comprehensive test system involved with optics, machinery and computer was designed to accomplish data acquisition, algorithm design and interface design on virtual instrument using NI data acquisition card USB6210. And convincing results of LEDs’ parameters, including peak wavelength, width of half-peak wavelength, centroid wavelength, chromaticity coordinates, purity, correlated color temperature and the forward voltage/current, were achieved with good consistency based on the measured spectrum. The system owns simple interface, reliable algorithms and stable results. Respective measurements on five kinds of color of LED result in an average error less than 3%, which show an ideal performance of the system.
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YANG Song-tao, WANG Jing, WANG Li-dong, LIANG Pei, DONG Qian-min. Photoelectric Parametric Test System of LED Based on Virtual Instrument[J]. Spectroscopy and Spectral Analysis, 2014, 34(11): 2912
Received: Nov. 21, 2013
Accepted: --
Published Online: Dec. 8, 2014
The Author Email: Song-tao YANG (yangsongtao1991@163.com)