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http://dx.doi.org/10.5302/J.ICROS.2010.16.6.586

Analysis of High Luminance LED Beam Degradation using Color CCD Image  

Cho, Jai-Wan (한국원자력연구원)
Choi, Young-Soo (한국원자력연구원)
Lee, Jae-Chul (한국원자력연구원)
Koo, In-Soo (한국원자력연구원)
Hong, Seok-Boong (한국원자력연구원)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.16, no.6, 2010 , pp. 586-591 More about this Journal
Abstract
VLC (Visible Light Communication) is a wireless communication method using light that is visible to the human eye. It has a major advantage that it causes no interference to RF-based devices. This makes wireless communication possible in RF hazardous areas such as nuclear facilities. In order to apply VLC communication in harsh environment of nuclear power plant, the high luminance LEDs, which are key components of the VLC communication, have been gamma-ray irradiated at the dose rate of 4kGy/h during 72 hours up to a total dose of 288 kGy. The radiation induced color-center was formed in the LED housing cap made of transparent plastic or acryl material. The beam degradations of high luminance LEDs by high dose-rate gammaray irradiation are analyzed using color CCD image processing technology.
Keywords
visible light communication; high luminance LED; gamma ray; color center; dose rate;
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