• Title/Summary/Keyword: Lighting

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Development of Automatic Digital/Analog Lighting Control System using ATMega 128 (ATMega128을 이용한 디지털/아날로그 자동조명제어장치의 개발)

  • Kim, Dong-Wan;Park, Sung-Won
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.55 no.4
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    • pp.161-166
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    • 2006
  • In this paper, an automatic lighting control system is developed using microprocessor. The developed system consists of a digital lighting control unit, an analog lighting control unit, and a lighting control simulator. In the developed system, ATMega128 is used as the main controller. The developed digital lighting control unit consists of eight modules and the developed analog lighting control unit consists of six modules respectively. Additional, the developed simulator consists of a digital and an analog lighting control simulation using graphic user interface. And so this developed system can be applied to the controller design of the interior and exterior lighting equipment.

Lighting Design for Efficient Installation.Operation of Roadway Lighting (도로조명의 효율적 설치.운영을 위한 조명설계)

  • Kwon, Ki-Tae;Shin, Sang-Wuk;Lee, Se-Hyun;Rho, Jae-Yup;Choi, Seok-Joon;Lee, Jeong-Keun;Seo, Jeong-Jin;Lee, Gyu-Seoung;Hwang, Myung-Keun
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2009.10a
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    • pp.81-84
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    • 2009
  • 국내외 도로조명 설계기법을 조사, 분석한 것을 바탕으로 시뮬레이션 결과와 비교 검토하였다. 그 결과 평균조도값은 설계와 큰 차이를 가지고 있지 않았지만 지그제그 배열일 경우 종합균제도 및 차선축균제도가 규정에 만족시기지 못하였다.

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Light Pollution of Outdoor Lighting in Mokpo-si (건강한 야간환경 조성을 위한 목포시 옥외조명의 빛공해 평가)

  • Kong, Hyo Joo;Lee, Jin Seoung;Kim, Jeong Tai
    • KIEAE Journal
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    • v.9 no.6
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    • pp.45-50
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    • 2009
  • Nowadays, the lighting of urban nightscape has become important for improvement in city. Lighting the outdoor is different that lighting an interior. Outdoor lighting designs should be designed to minimize glare, light trespass, light clutter and energy conservation to avoid light pollution. Mokpo city launched into a large scale project of the city beautification using outdoor lighting. However, outcomes of outdoor lighting project have faced strong opposition from environmental groups. This study aims to analyze the light pollution of outdoor lighting in Mokpo-si for creating a health night environment. The Radiant Imaging Prometric-1400 was used to measure the luminance of Yudal Mountain, Goha Island and Luminarie Street. The result showed that the all the outdoor lighting produce light pollution and some places like mountain and island did not need a lot of lighting all the time.

A Case Study on the Role of LED Lighting at the Residential Space

  • Kim, Hye Young
    • International Journal of Advanced Culture Technology
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    • v.4 no.4
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    • pp.6-12
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    • 2016
  • Due to the development of technology, the modern people became to require not only more convenient life but also more comfortable and emotional environment, and individually suitable living environment is applied to residents in a residential space. Recently, while the LED lighting was variously attempted in every sector in society, it is needed to express differentiated lighting according to the resident's individual lifestyle in a residential space. In this paper, we analyze the role of LED lighting suitable for the digitalized lifestyle of the modern people through the relevant literature survey and case studies. The following results are obtained in summary of the rapidly changed recent trends of LED lighting. First, LED light replace existing light sources due to the advanced new technology in LED industry, and take the spotlight as a new lighting solution with the development of variable color LED bulb and the control technology by the wired and wireless communications. Second, LED lighting can be structurally applicable to every lighting device because of its compact and lightweight units, can produce abundant light environment by expression of variable colors and moods with the easy coloring and dimming control, can be reborn as emotional lighting design. Third, as recently practices are constantly appeared that integrate LED lights in the interior elements, such as object and furniture, and combine advanced LED lighting technology to new materials, the portion of illumination on the indoor environment is further increased after integrating the LED lighting and interior elements make boundaries of lighting and product architecture become blurred. LED lighting is confirmed that is being changed from the external functionality including material, shape, color, and etc. into the contextual emotion design including the lights expression, variable color, brightness control, making image, and etc. as the light source in current smart lighting era.

Growth, carcass traits, immunity and oxidative status of broilers exposed to continuous or intermittent lighting programs

  • Ghanima, Mahmoud M. Abo;El-Hack, Mohamed E. Abd;Abougabal, Mohammed Sh.;Taha, Ayman E.;Tufarelli, Vincenzo;Laudadio, Vito;Naiel, Mohammed A.E.
    • Animal Bioscience
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    • v.34 no.7
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    • pp.1243-1252
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    • 2021
  • Objective: An experiment was conducted to investigate the continuous and intermittent lighting program effects on terms of the productive performance, carcass traits, blood biochemical parameters, innate immune and oxidative status in broiler chicks. Methods: A total of 600 Cobb-500 one day old chicks were randomly allocated into six equal groups (100 chicks per treated group with five replicates of 20 chicks each) based on lighting program; 22 continuous lighting (22 C), 11 h lighting+1 darkness twice daily (11 L/1 D), 20 h continuous lighting (20 C), 5 h lighting+1 darkness four times daily (5 L/1 D), 18 h continuous lighting (18 C) and the final group subjected for 3 h lighting+1 h darkness six times daily (3 L/1 D). The experimental period lasted 42 days. Results: Compared with those under the intermittent light program, broiler chicks exposed to continuous lighting for 22 h had significant improvement in live body weight and carcass (dressing and breast percentage) measured traits. Though reducing lighting hours significantly reduced feed intake and feed conversion ratio values. Different lighting programs revealed no significant effect on all blood biochemical parameters. Oxidative stress and innate immunity parameters significantly enhance by reducing lighting hours (3L/1D). Conclusion: The findings suggest that reducing lighting hours up to 3L/1D would be more useful in enhancing feed efficiency, innate immunity, and oxidative status compared with continuous lighting programs on broilers.

A Experimental Study the Showcase Lighting by Position of Light Source (광원의 위치를 중심으로 한 쇼케이스 조명실험연구)

  • 김현지;장상옥;안옥희
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.18 no.1
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    • pp.21-27
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    • 2004
  • This experimental study investigates the showcase display of cosmetic shops among the commercial space to suggest a desirable lighting by focusing on the lighting surroundings. The important outcomes of this study are summarized below. The result of the experiment for the showcase lighting; they need put the higher intensity lighting in inside for the local lighting and different effect. And for the emotional response, they need to put the horizontal lighting which is installed the behind of showcase and the vertical lighting for the front line lighting system.

A Study on the Lighting Distribution on Road Space by Modeling Roadside Tree Types (가로수 유형별 모델링을 통한 가로공간 조도분포에 관한 연구)

  • Lee, Seok-Jun;Lee, Jong-Sung
    • Journal of Environmental Science International
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    • v.21 no.4
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    • pp.391-399
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    • 2012
  • This study proposes lighting simulation approach to assess lighting quality on motor ways and walk ways considering each type of form and growth of roadside trees. Simulation approach to assess quality of lighting is frequently used for lighting design which guarantees secure of drivers and pedestrians during the night time. But, road side trees which have diverse benefits for citizens acts on obstacles during night time needs lighting. The results of this study shows a possible way for tuning the aims of both lighting and road side tree. It will be possible to develop harmonic design standards for road way lighting if further study achieved based on the result of this study.

An Experimental Study on the Impact of the Visual Perception by the Change of the Lighting Sources Color (광원색에 의한 실내공간의 지각변화에 관한 실험연구)

  • 이성민
    • Korean Institute of Interior Design Journal
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    • no.4
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    • pp.27-30
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    • 1995
  • This study suggests the optimum interior environment by projecting the criteria to design the living space light-ing that select the lighting environment among the sever-al environmental factors that influenced on the human perception. As a correspondance between the visual perception and the lighting, visual perception process, vision system, and visual perception system are investigated to compre-hend the lighting, and then conceptual contour of the lighting environments are presented which are transmit-ted the visual informations. As a lighting factors which are influenced on the visu-al perception, light source color is analized. Foundationally, the effect of the lighting methods and the techniques are investigated, and the changes of the lighting methods which influences on the space perception are examined through the previous results. As the changing the light sources color, the changing the subjective feelings of space perception through the ex-periment. This study is concluded with the proposition of the ef-fective lighting and the importance of the lighting envi-ronment.

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A Study on the Evaluation of Lighting Energy Consumption by Control Strategy of the Electric Lighting (전기조명 제어 전략에 따른 조명에너지 소비량 평가에 관한 연구)

  • Yun, Gyeong;Kim, Kang-Soo
    • KIEAE Journal
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    • v.12 no.1
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    • pp.119-125
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    • 2012
  • The objective of this study is to evaluate the electric lighting energy consumption carried out by Daysim program. A comparison between the measurement and simulated exterior global horizontal illuminance shows differences about 10% and it is very similar to the measurement. The interior illuminance simulated by Daysim are 18.9% lower than the measurement and simulated lighting energy consumption is 10% lower than the measurement. Corrected annual lighting energy simulation results show that the best case is the combination of occupancy switch-off and dimming system with automatic controlled blinds (E-3). In case of no blinds, it occasionally derives the minimum lighting energy consumption but it causes the glare, so we need to be careful for choosing the control strategy. For the overcast sky, the lighting energy consumption is not changed significantly by control strategy while the lighting energy in the clear sky is changed noticeably. So we must know the right strategy for each case to control the electric lights and blinds.

The Effects of Music Intervention upon Lighting on Autonomic Nervous System (조명에 따른 음악활동이 자율신경계에 미치는 영향)

  • Oh, Hyewon;Lee, Hyejin;Kim, Minho;Kim, Dongkwan
    • Journal of The Korean Society of Integrative Medicine
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    • v.1 no.1
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    • pp.11-22
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    • 2013
  • Purpose : The purpose of this study was to investigate the effects of music intervention upon lighting on stress. Method : The participants 60 college students, were divided three groups. Two groups were apply each music and bright lighting(bright lighting groups) and music and dark lighting(dark lighting groups) during 13minutes at Snozelen and the other group was control group. Each groups were assessed stress resistance, activity of parasympathetic nerve, activity of sympathetic nerve, balance of ANS, physical arousal by EKG of CANS 3000, at before and after other each intervention. The analyses were performed using version of SPSS 17. Result : The change rate of bright lighting group was showed statistically significant decrease in stress resistance compared to control group. And the change rate of dark lighting group was showed statistically significant decrease in resistance stress, activity of parasympathetic nerve, and balance of ANS compared to control group and statistically significant increase in stress resistance and activity of parasympathetic nerve compared to bright lighting group. Conclusion : The results of this study indicate that music intervention on dark lighting is more effective on decrease of stress than application of bright lighting and general lighting.