• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.17 no.3
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• pp.1-10
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• 2003

Comparing to the conventional power systems, PV(photovoltaic) outdoor lighting system applications are evaluated as the most economical application. In this paper, we installed two PV lighting systems, which uses LPS(low pressure sodium) and electrodeless lame as their loads, and applied a computer-based data acquisition system using the Labview program for monitering purpose and effective operations, considering battery life time Also, we observed the generated power from the solar array, and energy losses comparing to its installed capacity. Because most PV system performance procedures have looked at the performance of the individual components and have deficiency of addressing how the integrated system works, we confirmed the decrease possibility of the solar amy capacity after analyzing the performance of the installed PV lighting systems.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10b
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• pp.451-453
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• 2001

본 논문에서는 향상된 AR 비디오 시스템을 위하여 장면내의 객체에 대한 그림자 모양 안쪽의 광휘 분포로부터 실제장면의 조명 분포를 추정하기 위한 새로운 메소드를 설명한다. 장면의 조명 분포는 확장된 빛의 근원에 대한 이산 샘플링에 의해 근사화되었고, 장면에 대한 조명 분포는 그림자 모양 안쪽의 광휘 분포로부터 장면내의 다른 객체 위에 알려진 모양의 객체에 의해 추정되었다. 그림자 안쪽 표면에 대한 반사 특성 대신에, 장면에 대한 조명 분포와 표면에 대한 반사 특성을 동시에 추정하는 반복적인 최적화 구조를 기반으로 한다. 또한, 장면에 대한 조명분포의 적응적 샘플링 방법을 소개한다. 전체적인 조명 분포에 대한 균일한 분리를 사용하기보다는 이전의 반복 지점에서 조명 분포에 대한 샘플링 방향을 적응적으로 증가한다. 적응적인 샘플링 구조를 사용한 추정방법은 보다 소수의 샘플링을 사용하여 전체적인 조명을 보다 효율적으로 추정할 수 있었다. 제안된 메소드는 복잡한 조명 환경아래라도 조명 분포를 추정하는데 매우 효율적이다.

• Journal of Navigation and Port Research
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• v.28 no.8
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• pp.667-671
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• 2004

This paper describes an development of digital power supply for ship's emergency lighting system(SELS). Proposed system is composed of emergency power supply system(EPSS), half bridge(HB) inverter, fluorescent lamp(FL) starting circuit and microprocessor control system. Experimental works using proposed system confirm that speedy and stable power to be supplied when main power source cut-off, compared with conventional analog type, and control input power up to 35.0［%］ by adjusting pulse frequency of the HB inverter.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.235-243
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• 2014

In this paper, we propose an efficient control system for intelligent LED indoor lighting. The proposed an efficient control system for intelligent LED indoor lighting were included to elements such as daylight intensity measured through the PIR sensor and illuminance sensor at lighting style by the schedule defined and the occupancy detection. And it was controlled lighting through to the wireless sensor network, and was designed for the energy savings. Also, the lighting control of indoor lighting based on occupancy detection detect fine movements using a PIR sensor. And an unnecessary lighting intensity control of the window-side and the inside were controlled according to daylight level measurement result using the light sensor. In daylight inflow many case, the window-side lighting was to automatically darker, and in daylight inflow less case, was designed to be automatically bright. The efficiency validate results of an efficient control system for intelligent LED indoor lighting, the brightness of the indoor light were to maximize the energy saving by controlling in real time when entering as indoor a little that external lighting or daylight.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.28 no.3
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• pp.3-8
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• 2014

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.15 no.6
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• pp.9-13
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• 2001

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.25 no.3
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• pp.4-12
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• 2011

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.4
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• pp.69-74
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• 2000

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.2
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• pp.46-55
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• 2013

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.25 no.2
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• pp.48-59
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• 2011