• Journal of information and communication convergence engineering
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• v.21 no.3
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• pp.216-224
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• 2023

Smart lighting systems have become increasingly popular in several public sectors because of trends toward urbanization and intelligent technologies. In this study, we designed and implemented a web application platform to explore and monitor data acquired from lighting devices at Thammasat University (Rangsit Campus, Thailand). The platform provides a convenient interface for administrative and operative staff to monitor, control, and collect data from sensors installed on campus in real time for creating geographically specific big data. Platform development focuses on both back- and front-end applications to allow a seamless process for recording and displaying data from interconnected devices. Responsible persons can interact with devices and acquire data effortlessly, minimizing workforce and human error. The collected data were analyzed using an exploratory data analysis process. Missing data behavior caused by system outages was also investigated.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.730-733
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• 2010

The Green Lamp Fixture (GLF) of LED prepared with thin panel structure was investigated for illumination of street lamps and other lighting system uses, which was also very useful to aquaculture and aquafarm lighting uses, or fish luring lights and marine aquanautics of aquamarinautics (aquamarine+aquanautics) uses, etc. In the case of fish luring lights, it was verified that the fish luring of Green Lamp Fixture of LED was very effective for phototaxis movement and ecological community promotion to the micro-living things of organisms and the small fries and fishes, like as 'crowding together'. For the aquaculture lightings, it was also very excellent in waterproof and heat-sink properties, photosynthetic growing of algae and micro-organisms, water-weeds and seaweeds living underwater.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.11a
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• pp.85-88
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• 2007

현재 LED 전용의 렌즈로서 개발되어 있는 제품들은 대부분이 매우 좁은 빔각을 가지는 집광렌즈이지만 이를 사용하여 다양한 조명기구의 배광을 달성하기는 불가능하다. 본 논문에서는 가로등 형 배광을 가지는 대칭형, 비대칭형 배광을 가지는 선형 렌즈의 설계를 진행하고 그 성능을 시뮬레이션 하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.109-112
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• 2007

본 논문에서는 콤팩트 메탈헬라이드 램프용 가로등 기구의 반사판에 대해 2차원 설계법을 기반으로 하는 3차원 설계법을 제시하고 포토피아 2.0의 반사판 설계 툴을 사용하여 150W 콤팩트 메탈헬라이드 램프용 도로 조명 기구의 반사판을 설계하였다.

• 전기의세계
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• v.15 no.4
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• pp.45-49
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• 1966

서울시내의 간선도로의 조명은 현재는 거의 국제수준에 준할 정도로 밝게 설비되어 있으나, 약 5년전만해도, 한나라 수도의 밤거리라고 하기에는 부끄러울 정도로 어둡고 컴컴한 거리었다. 도로조명은 시력의 감퇴를 초래하는 야간에 차량운전자나 보행자가 정확, 신속하고 평이한 시작업을 하므로서, 생명의 안전, 각종 교통화재방지가 사회생활에 편의을 도웁는데 있으므로 도로조명을 실시하는 경우에는 도시미관의 조성, 재산의 보호, 도로사용상의 결적성의 향상, 범죄의 예방등의 도시계획의 관점에서 고려되어야 한다. 본 측정, 평가 및 설계에는 미국조명학회(I.E.S.)에서 발행된 I.E.S guide for out door illumination test와 American standard practice for street and high way lighting을 많이 참고하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2008.10a
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• pp.117-119
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• 2008

LED 조명기구가 복잡성을 가지는 도로조명의 배광을 달성하기 위해서는 조명용도에 맞도록 설계된 LED 2차렌즈가 필요하다. 도로폭 7m의 이면도로용 LED 조명기구에 적용되는 2차 렌즈를 설계하고 그 성능과 특성을 시뮬레이션 하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.39-42
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• 2009

본 논문에서는 콤팩트 세라믹 메탈핼라이드 램프용 가로등 기구의 반사판에 대해 2차원 설계법을 기반으로 한 3차원 설계로 150W single-ended type 콤팩트 세라믹 메탈핼라이드 램프 전용의 가로등용 반사판을 설계하였다.

• Proceedings of the Safety Management and Science Conference
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• 2010.11a
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• pp.63-80
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• 2010

This paper describes the development of various lighting equipment adapting Ultra Constant Discharge Lamp that has newly been on commercial supply in the market. Meeting the required conditions of lighting equipment, various types of UCD Lamp equipment with excellent performances could be successfully developed. In order to provide a guideline for the economical lighting product selection, the analyzed data comparison between Hi-pressure Sodium Lamp which has been the most popular lamp for street lighting and UCD Lamp is provided. The conclusions of the study are made as follows; (1) The performance measurement result of UCD Lamp shows excellent Luminous Efficacy as 108Lm/W, daylight-like Color Rendering Index as 90Ra, and the best operating temperature range as $-50^{\circ}C{\sim}+85^{\circ}C$. Comparing to the Hi-pressure Sodium Lamp, UCD could be evaluated as much superior products. (2) In an assembled status with the lighting fixture (Type STB형-60W), UCD Lamp was tested OK for one hour duration at the temperature range form $-50^{\circ}C$ to $+85^{\circ}C$ and the humidity of 98%. The operation at the extremely low temperature can be an excellent feature to enable the export to the cold temperature regions such as Northern Europe and Russia and the specific applications for defense systems and special industry. (3) As UCD Lamp is a genuine Korea made product following Energy-saving and Eco-friendly policy, it should be appreciated as one of the best $CO^2$ reduction Green product.

• Journal of the Korean Institute of Landscape Architecture
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• v.42 no.5
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• pp.41-51
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• 2014

The purpose of this study is to understand the relationship between physical characteristics and general people's perception. In this study, the physical quantities of artificial lighting were measured from the visual point of the pedestrian and general public perception including preference and satisfaction was examined. As a result of this study, the total luminance and mean luminance had different value in each site. However, there were no significant differences in area and number of light source between sites. The effects of these factors are affected by indoor lighting. In the group of respondents, 10s people, male, students, meeting, 1~2 times a month and 18:00~20:00 had higher satisfaction compared to other groups respectively. A total luminance and mean luminance gave effect on the satisfaction of physical quantities of artificial lighting and the satisfaction on night landscape. With increase in total luminance and mean luminance, the satisfaction was lowered. It is necessary to reflect these factors on the future policies of nightscape.

• Journal of the Korea Safety Management & Science
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• v.12 no.4
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• pp.41-51
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• 2010

This paper describes the development of various lighting equipment adapting Ultra Constant Discharge Lamp that has newly been on commercial supply in the market. Meeting the required conditions of lighting equipment, various types of UCD Lamp equipment with excellent performances could be successfully developed. In order to provide a guideline for the economical lighting product selection, the analyzed data comparison between Hi-pressure Sodium Lamp which has been the most popular lamp for street lighting and UCD Lamp is provided. The conclusions of the study are made as follows; (1) The performance measurement result of UCD Lamp shows excellent Luminous Efficacy as 108Lm/W, daylight-like Color Rendering Index as 90Ra, and the best operating temperature range as $-50^{\circ}C{\sim}+85^{\circ}C$. Comparing to the Hi-pressure Sodium Lamp, UCD could be evaluated as much superior products. (2) In an assembled status with the lighting fixture (Type STB형-60W), UCD Lamp was tested OK for one hour duration at the temperature range form $-50^{\circ}C$ to $+85^{\circ}C$ and the humidity of 98%. The operation at the extremely low temperature can be an excellent feature to enable the export to the cold temperature regions such as Northern Europe and Russia and the specific applications for defense systems and special industry. (3) As UCD Lamp is a genuine Korea made product following Energy-saving and Eco-friendly policy, it should be appreciated as one of the best $CO^2$ reduction Green product.