Evaluation of Light Intensity and Uniformity of LEDs for Protected Crop Production
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2014.06
- 8페이지/ 어도비 PDF
- 가격 4,000원
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서지정보
ㆍ발행기관 : 한국농식품정보과학회
ㆍ수록지정보 : Agribusiness and Information Management / 6권 / 1호
ㆍ저자명 : MunJung Kim, YounKug Choo, YongJoo Kim, SunOk Chung
목차
Abstract
1 Introduction
2 Literature Review
3 Materials and Methods
3.1 LED and Light Quantity Measurement Device
3.2 Experimental Equipment and Methods
4 Results and Discussion
4.1 Light intensity and uniformity by the vertical height
4.2 Light intensity and uniformity by the horizontal distance
5 Summary and Conclusions
References
영어 초록
This study was conducted to evaluate light intensity and uniformity of two SMD (surface-mount device) type LEDs for protected crop production. A low-power (0.1 W) and a high-power (1 W) LEDs were selected and the intensity and uniformity was evaluated at different vertical (height) and horizontal (distance) intervals. When the horizontal interval of the LED bar was fixed,the light intensity increased and the uniformity decreased as the height decreased. At the 30~40 cm heights, 20~30% of the area showed 200 ±20 μmolm-2s-1. As the horizontal distance of the LED bars increased, while the uniformity increased as well, the light intensity decreased. At the distances of 6~10 cm, 17~23% of the area showed 200 ±20 μmolm-2s-1. When the LED bars were added to the sides, the light intensity and uniformity were generally improved. Results showed that the light intensity and uniformity depended on the height and interval of the LED bulbs; therefore, optimum arrangement for the crops interested should be determined through experiments.
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