A Digital Dimming Color and Intensity Method of Three-channel LED

被引：0
|
作者：
Luo W.-A. [1 ]
Wang H. [1 ]
Chen X.-D. [1 ]
Zeng Y.-B. [2 ]
Li Z.-J. [2 ]
He R.-G. [2 ]
机构：
[1] School of Electro-mechanical Engineering, Guangdong University of Technology, Guangzhou
[2] Department of Foshan Supervision Testing Center of Quality and Metrology, Foshan
来源：
Luo, Wei-An (willian_lok@163.com) | 2018年 / Editorial Office of Chinese Optics卷 / 39期
关键词：
LED; Light source; Machine vision; Mixed light; PWM;
D O I：
10.3788/fgxb20183903.0414
中图分类号：
学科分类号：
摘要：
In machine vision, there are many problems exist in light-source, like long running times, manual debugging, heating seriously and poor adaptability. Accordingly, a digital dimming method of light source was proposed based on PWM technology, which was divided into eight situations. The limitation of this model was pointed out and the principals of the digital light-source was declared from three aspects: dimming theory, control theory as well as driving theory. In the meanwhile, four representative experiments were showed out. The results show that this method can satisfy most proportion of the mixed light models, and realize the adjustment of color as well as the change of illumination. With the function of trigger control, the above problems can be solved properly, at the same time, postponing aging of light-source and energy saving can be achieve as well. © 2018, Science Press. All right reserved.
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页码：414 / 421
页数：7
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