The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Design and Implementation of LED Lighting System with Adjustable Brightness and Color Capability

색상 및 밝기 조절이 가능한 LED 조명 기구의 설계 및 구현

  • Received : 2015.04.20
  • Accepted : 2015.05.23
  • Published : 2015.05.31
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Abstract

In this paper, we design and implement a lighting system which has a capability of adjusting brightness and colors of LED module. The lighting systems is consisted of RGB and white LEDs controlled by a micro-processor. All colors in nature can be synthesized in our lighting system by controlling brightness of 4 color LEDs individually. The current flowing to LED is limited to a maximum set value to extend the LED life time using PWM current control. The control module also includes the function that it can save and load brightness and color data set by the user. The implemented lighting system passed the electromagnetic compatibility(EMC) test such that it can be used as a commercial product.

본 논문에서는 색상과 밝기가 조절 가능한 LED 조명 기기를 설계하고 구현하였다. 본 조명 기기는 RGB와 백색 LED로 구성되고 마이크로 컨트롤러에 의해 구동된다. 4색 LED를 사용하여 자연계의 거의 모든 색상을 조명 시스템 내에서 표현하도록 하였다. 조명기구의 수명 연장을 위해 LED를 흐르는 전류는 최대값을 넘지 않도록 PWM을 이용한 전류 제어를 실시하였다. 또한 사용자가 미리 설정한 여러 개의 색상과 밝기정보를 저장하고 다시 불러올 수 있는 기능을 탑재하여 사용자가 손쉽게 원하는 조명을 설정하여 사용하도록 하였다. 구현된 조명시스템은 전자기적합성 검사 등을 통과하였으며 실제 조명기구 제품으로 사용가능하다.

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References

  1. H. Kim, J. Youm, W. Chung, and H. Kim, "A Color Temperature and Illuminance Controllable LED Lighting System," J. of the Korean Institute of IIIuminating and Electrical Installation Engineers, vol. 23, no. 12, 2009, pp. 10-22.
  2. Y. Kim, K. Lee, K. Chang, Y. Choi, and H. Kim, "An Energy-efficient LED Lighting Control Scheme with Provision of User Illumination Requirement," J. of the Korea Institute of Communications and Information Sciences, vol. 36, no. 11, 2011, pp. 1383-1388. https://doi.org/10.7840/KICS.2011.36B.11.1383
  3. Y. Han and D. Kim, "Sensitivity illumination system using biological signal," J. of the Korea Institute of Electronic Communication Sciences, vo1. 9, no. 4, 2014, pp. 499-507. https://doi.org/10.13067/JKIECS.2014.9.4.499
  4. J. Song, J. Park, and B. Yoon, "Design and Implementation of Transformerless 40W LED Light Driver Circuit for Ships," J. of the Korea Institute of Electronic Communication Sciences, vo1. 7, no. 7, 2012, pp. 485-490.
  5. H. Shin, "Development of constant current SMPS for LED Lighting," J. of the Korea Institute of Electronic Communication Sciences, vo1. 10, no. 1, 2015, pp. 111-116. https://doi.org/10.13067/JKIECS.2015.10.1.111
  6. J. Lee, W. Kim, B. Kim, and W. Han, "Study on Analysis of Characteristics of Illuminance and Luminance Distribution of LED Luminaires," J. of the Korean Institute of IIIuminating and Electrical Installation Engineers, vo1. 22, no. 9, 2008, pp. 1-7.
  7. H. Jeong, S. Han, and C. Jang, "Energy Efficient LED Lighting Design to Utilize the Sun Light," J. of the Korean Solar Energy Society, vo1. 31, no. 2, 2011, pp. 31-36. https://doi.org/10.7836/kses.2011.31.2.031
  8. I. Kim, Y. Kim, and A. Choi, "Comparison and Analysis about CCT of LED Luminaire According to Light Sources and Compounded CCT," J. of the Korea Institute of Illuminating and Electrical Installation Engineers, vo1. 24, no. 12, 2010, pp. 1-8. https://doi.org/10.5207/JIEIE.2010.24.12.001