• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 1990년도 추계학술발표회논문집
• /
• pp.28-34
• /
• 1990

Lighting is one of the largest energy, integrated lighting system with daylight and artificial lighting has been suggested. In such system, perimeter zone can be illuminated by daylighting and the deep area of room by artificial lighting. So, the study is to develope estimation nomograph of lighting energy by turnning-off depth and lighting control systems during daytime. For the purpose, energy nomograph has been developed to apply to side-lit office guilding and the use and limitation of the nomograph has been discussed.

• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2008년도 추계학술대회 논문집
• /
• pp.169-172
• /
• 2008

Recently, landscape lighting is more and more installing in many places such as park, cultural heritages, large-scale structures, bridges, apartment, and so on. However, there is no the government-set official estimation for standard wages constructing luminaries for landscape lighting. The cost of construction is estimated based on the standard wages of related-similar installations such as internal lighting fixtures or the designer's subjective decision. Sometimes, it is overestimated or underestimated. In this paper, the fundamental process for estimating the standard wages constructing luminaries for landscape lighting is studied. The estimation method of standard wages constructing lighting fixtures was examined on the basis of the type and capacities of luminaries, installation places, type and shapes of installation auxiliary materials, worker's skill, and etc. As a result, some results obtained in this work were significantly, different with the standard wages for internal electric wiring published by Korea Electric Association. In the future, to improve the accuracy of the estimation of the standard wages for constructing luminaries for landscope lighting, detailed factors related to the installation condition and dimensions and types of luminaries should be considered.

• 조명전기설비학회논문지
• /
• 제16권6호
• /
• pp.13-21
• /
• 2002

실내공간에서 보편적으로 사용되는 조명방식으로 TAL 및 전반조명방식 등을 언급할 수 있는데, 일반적으로 우리나라 실내 조명환경에서는 전반조명방식을 채택하고 있다. 여기서, 가장 주요한 조명기술 요소가 바로 Glare이며, 특히 VDT를 사용하는 작업환경에서는 더욱 그러하다. 이러한 실내 조명환경에서의 Glare에 대한 연구 및 평가법은 CIE 및 IESNA 등에서 꾸준히 연구되어 제시되고 있으며, 각종 실내 조명환경에 따라 다르게 적용되고 있다. 한편, 국내의 실내 조명상황에 대해 Glare평가를 위한 G 분류가 제시되고 있지만, 평가에 있어 그 한계성이 있으며, 이 외에는 좀더 상세한 Glare 규정이 없는 실정이며, 각종 실내 조명환경에 적용하기가 어려운 게 사실이다. 본 논문에서는, 위에서 제시하고 있는 주요 Glare규정들을 가지고, 국내의 조명상황에 맞춰 실내 공간 및 조명기구 등을 각각 선정한 후, Glare 평가법들을 적용하였다. 또한 국내의 실내 조명환경에 적합한 Glare Index를 제시하고자, 평가법 상호간의 비교 및 적합성을 꾀하고자 하였으며, 더 나아가 국내에 맞는 Glare Index를 마련하고자 하였다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1998년도 하계학술대회 논문집 C
• /
• pp.1073-1075
• /
• 1998

This paper presents the method of parameter estimation of diffusion model for monitoring Demand-Side Management Program. Bass diffusion model was applied in this paper, which has different values according to parameters ; coefficients of innovation, imitation and potential adopters. Though it is very important to estimate three parameter, there are no empirical results in practice. Thus, this paper presents the method of parameter estimation in case of few data with constraints to reduce the possibility of bad estimation. The constraints are empirical results or expert's decision. Case studies show the diffusion curves of high-efficient lighting and also forecasting of the peak value for power demand considering diffusion of high-efficient lighting, the feedback and least-square parameter estimation method used in this paper enable us to evaluate the status and forecasting of the effect of DSM program.

• 대한설비공학회:학술대회논문집
• /
• 대한설비공학회 2003년도 하계학술대회 논문집
• /
• pp.182-182
• /
• 2003

• 전기학회논문지P
• /
• 제58권4호
• /
• pp.541-545
• /
• 2009

This study evaluated the contact resistance, insulation resistance, withstand voltage characteristics and insertion force, etc., of the wire connector used inside an integrated LITE WAY lighting fixture developed for efficient installation. Since the connector connecting the lighting fixture's internal wires is housed, it is easily connected and separated and has a structure enabling a close-fitting connection. The temperature and time applied to the high temperature characteristics test of the connector are $105^{\circ}C$ and 16 hours, respectively. The measured contact resistance of the high temperature tested connector was 3.258 mV/A, and its measured insulation resistance was greater than $10\;G{\Omega}$ All specimens demonstrated uniform insulation characteristics, which could be seen to be in good condition. From the withstand voltage test results found before and after performing the high temperature operation test on the connector for cable connection, it was confirmed that the withstand voltage characteristics between all terminals were good. The insertion force of the connector connecting the internal wiring averaged 9.67 kgf. It was observed that the insertion force between the plug housing and the female terminal, and that between the plug housing and the male terminal, were 0.680 kgf and 1.27 kgf on average, respectively.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.III
• /
• pp.586-592
• /
• 2000

There is currently no satisfactory way to optimize supplemental lighting in a greenhouse-type plant factory especially concerning plant production. In a commercial plant factory, we got outside radiation data, inside radiation data and lamp running data. They have a correlation, but have much disorder. By using regression, tendency between the outside and the inside including supplemental lighting was found. We could estimate the average transmittance of this plant factory. From this estimation, we could admit the amount of inside radiation was supplied as much supplied compared to natural radiation. Then we are trying to investigate of the production amount and the supplemental lighting. Plant factory is environmentally controlled, the temperature and humidity are not actually controlled stable. We propose a design of neural network model could be useful to estimate the profit resulting from the operation of supplemental lighting.

• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2005년도 학술대회 논문집
• /
• pp.147-150
• /
• 2005

Fixed lighting of public ways for both vehicles and pedestrians can create a nighttime environment in which people see comfortably and can quickly and accurately identify objects on the roadway being travelled roadway lighting can improve traffic safety, achieve efficient traffic movement and promote the general use of the facility during darkness. The design of a roadway lighting system involves consideration of visibility, economics, esthetics, safety and environmental conditions. This paper describe estimation of horizontal illuminance by actual measurement at main streets in Jejusi. We try to evaluate Jejusi Roadway Lighting Conditions for modeling by computer simulation.

• 조명전기설비학회논문지
• /
• 제20권7호
• /
• pp.1-5
• /
• 2006

도로조명은 차량 운전자와 보행자에게 장애물을 신속 정확히 그리고 편안하게 볼 수 있는 도로의 야간 주위환경을 제공한다. 또한 밤에 도로설비 이용을 원활하게 함은 물론 교통의 흐름을 향상시켜 교통안전을 증진시키는데 목적을 두고 있다. 이 논문은 제주시내 중심가 8개 도로의 등기구 설치현황을 실측조사 하였으며 조명기구 배열방식을 고려하여 4개 도로의 조도 실측을 통하여 수평면조도와 균제도를 기준치와 비교분석하였다. 이를 토대로 제주시 주요 도심지 상가 도로에 관한 시뮬레이션으로 도로조명의 적합한 모델을 제시하였다.

• Journal of information and communication convergence engineering
• /
• 제18권3호
• /
• pp.201-206
• /
• 2020

This paper presents a new method for controlling the current of lighting LEDs without current sensors. This method can be used as backup against LED current sensor faults. LED lighting requires a circuit with a constant current in order to maintain the same brightness when the ambient temperature changes. Therefore, we propose a new current estimation method to provide backup in case of current sensor faults based on the calculation of the inductor current. In the fabricated circuit, the average current changes from 144.03 mA to 155.97 mA when the ambient temperature changes from 0℃ to 60℃. The application of this study can enable the fabrication of a driving IC for LEDs in the form of a single chip without sensing resistors. This is expected to reduce the complexity of the peripheral circuit and enable precise feedback control.