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      • KCI등재

        광센서 출력비를 이용한 조명광 판별 시스템의 구현

        김은수(Eun-Su Kim),박경남(Kyung-Nam Park) 한국산업정보학회 2010 한국산업정보학회논문지 Vol.15 No.5

        본 논문에서는 광센서를 이용하여 컬러 디스플레이 장치를 사용하는 다양한 주위 조명광을 판별할 수 있는 시스템을 구현하였다. 디스플레이를 사용하는 외부 조명광을 판별하기 위해서 Ye와 Cy 두 출력을 갖는 광센서를 사용하여 조명광 판별 시스템을 구현하였고, 구현한 실제 시스템에 대한 실험 결과 조도가 변하는 다양한 조명광에 대해서 광센서의 출력 전압비(Ye/Cy) 로 조명광의 판별이 가능한 것을 확인하였다. In this paper, We implemented discriminating system for various surround illuminants using photo sensor. To discriminate surround illuminants of display device we implemented discriminating system using photo sensor which has output of Ye and Cy. Experimenal results shows that we could discriminate surround illuminants by output voltage ratio (Ye/Cy) of photo sensor in the variable luminous intensity of surround illuminants.

      • KCI우수등재

        도시근린공원의 야간조도분포의 특성

        최연철,김진선 한국조경학회 2000 韓國造景學會誌 Vol.28 No.4

        The purpose of this study is to research and analyze the distribution of night illumination level at urban neighborhood parks and to show its characteristics. And this is used basic data ensuring safety and satisfying aesthetic and psychological desires of people who use urban neighborhood parks at night. To research and analyze the distribution of illumination level at urban neighborhood parks at night. To research and analyze the distribution of illumination level at urban neighborhood parks, I selected 8 urban neighborhood parks as the subject of research in this study, set the measuring standard of illumination level, and measured the illumination level by the measuring standard. The results of this study are as follows; 1. Currently, total average illumination level of urban neighborhood parks was lower than the minimum standard of illumination level I KS A 3011-1993. 2. Average illumination level of each place in urban neighborhood parks appeared variously from low level to high level. But this was lower than the minimum standard illumination level in KS A3011-1993 like total average illumination level. 3. The higher was total average illumination level of urban neighborhood parks, the more various was brightness of places. Although users' aesthetic and mental desire or behavioral aspect relate with safety cannot be found by only survey and analyses of illumination level, it is judged that first, illumination level of the standard of the lightness should be analyzed to find user's mental states and behaviors in external space at night. Therefore, it is considered that this study, which analyzed characteristics illumination level as basic data, has a significance. The study continuing for other illuminative environmental factors suitable in the place is required because the brightness of places may not be measured by only illumination level. And the proper illumination level in outdoor places should be showed in considering psychological and behavioral aspects of human as people may have their own sense of brightness.

      • KCI등재후보

        LED 백라이트 시스템을 이용한 빛 감지형 액자의 연구

        조병권 ( Byung Gwon Cho ) 한국화상학회 2011 한국화상학회지 Vol.17 No.3

        A lighted frame using LED backlight system operated by sensing of light was developed including in CDS sensor for sensing brightness. The LED backlight was turned off when the surrounding illumination was bright, and turned on when the surround illumination was dark. A frame was designed that the inside space was sufficient for inserting the LED backlight system and the edge of the frame could hide unnecessary light by a LED backlight. A LED backlight system was designed that a high speed switching transistor operated on and off state by connecting a CDS light sensor to base terminal because a CDS light sensor has a characteristics that a resistance was 0 in the case of bright condition and infinite value in the dark condition. 3 anodes among 9 LEDs with the series and parallel connections was joined to power supply and 3 cathodes was joined to a collector of the transistor. LEDs were light because 3 cathodes were grounded when a transistor turns on and LEDs were dark because 3 cathodes were floating in the off state. It was founded that LED backlight did not operate by the sensor under the bright illumination condition and normally operated when the surrounding illumination was dark.

      • Cockpit 內의 照明效果에 關한 硏究

        崔鎰奎 한국항공대학교 1973 論文集 Vol.6 No.1

        最近 航空機 操縱室內의 照明裝置는 操縱士가 容疑하게 適應?할 수 있도록 많이 改良되어 왔으나 아직도 是正되어야 할 問題点들이 있다고 본다. 본 論文이 試圖하는 것은 航空機 照明裝置의 欠函事項을 分析檢討하고 새로운 評價方法을 提示하려는데 있다. Notable progress in evaluation of cookpit lighting has been made by the industry in recent yearb, more is Possible on Current as well as future aircraft if Pilots themselves are able to evaluate their Cockpit lighting system, analyse deficiencies, and report them for Correction and subsequent avoidance. my intention here is to Provide some basie information that will guide the Pilot in analysing the deficiences in his aircraft lighting System, and to suggest and evalu.a.tion that can be used for current or new aircraft.

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