• 디지털융복합연구
• /
• 제11권4호
• /
• pp.229-234
• /
• 2013

본 연구의 목적은 감성조명용 조명기기의 조도 및 색온도 표현능력을 극대화할 수 있는 최적의 광원조합을 효율적으로 제어할 수 있는 제어장치를 개발하는데 있다. 실내조명으로 사용할 수 있는 다양한 색온도에 대하여 사람이 편안함을 느끼는 조도영역을 찾아내고 이를 조합함으로서 감성조명을 실현할 수 있다. 이를 위하여 감성조명용 조명기기는 2000K와 8000K의 서로 다른 색온도를 가지는 형광램프로 구성하였으며 각각의 형광램프의 수량을 변화시키며 조명기기의 조도 및 색온도 표현능력을 광학 시뮬레이션을 통하여 평가하였다. 사용자가 원하는 조명환경을 휴식, 대화, 모임, 손님접대, 예술 등의 5가지로 구분하여 적외선 리모콘으로 수신단에 전송하면 수신단에서 PC0~PC4 병렬포트를 통해서 사용자가 선택한 모드에 맞는 DC전압을 출력한다. DC전압이 EEFL 인버터에 입력되고 입력된 DC전압 레벨에 따라 EEFL의 dimming 값이 변하면서 사용자가 원하는 조명환경(조도 및 색온도)를 만들고 인체감지센서를 사용하여 사람이 없을 경우에는 EEFL을 자동으로 꺼지도록 함으로써 소비전력을 절약할 수 있도록 개발하였다.

• 한국인터넷방송통신학회논문지
• /
• 제11권4호
• /
• pp.31-38
• /
• 2011

본 논문에서는 실내 전력소모를 효율적으로 줄이기 위하여, 무선센서네트워크 기반의 자율 실내조명 제어 시스템을 제안한다. 제안된 시스템에서는 먼저 출입문에 부착된 수동 적외선 (Passive Infrared: PIR) 센서를 이용하여 각 출입문을 통해 실내로 들어오고 나아가는 사람 수를 감지하다. 각 출입문에서 측정된 센서 값들은 무선센서네트워크를 통해 중앙 제어장치로 전송된다. 중앙제어장치는 전송된 센서 값을 이용하여 실내에 사람의 존재 유무를 파악할 수 있는 제어 알고리즘을 통해 실내조명을 자율적으로 제어 한다. 비용분석 및 시뮬레이션을 통해 제안된 시스템이 일상생활에 적용될 경우 약 20%의 전기소모를 절약할 수 있음을 보였다.

• 조명전기설비학회논문지
• /
• 제25권9호
• /
• pp.1-7
• /
• 2011

A performance delivers the contents and feeling through human bodies and stage settings in the limited space of a stage. Among the stage settings, the lighting creates overall atmospheres effectively according to the situations of the performance such as a time flow, a change of seasons, an expression of the mental state of the performer. As the LED lighting is used more widely, the number and the size of the lighting is being decreased, which makes it possible for various devices to be used. However, just as conventional lighting devices, most of them are fixed. So it is difficult to use them at a blind spot and to replace them. To solve this problem, this article suggests a system which replaces lighting automatically and moves. As it can moved to a spot we want on a rail, and the lighting system can be replaced by itself, it can have various lighting effects, increasing the effectiveness of the performance. Additionally, it can also decrease the danger of a worker operating the lighting device located at a high place. At the mock-up experiment, its mobility and stability on a rail were tested using the wheel of the Modular Robot.

• 조명전기설비학회논문지
• /
• 제26권2호
• /
• pp.8-17
• /
• 2012

The objective of this study is to perform an analysis of the heat(heating and cooling) and lighting energy consumption according to the window area ratio and the application of horizontal louver, which is external shading device installed for the purpose of energy savings in office buildings. For this, a building was chosen as a typical example, and the heat and lighting energy consumption was calculated by using the daylight and building energy analysis simulation. The results showed that the total energy consumption, when the lighting control was applied, was reduced by an average of 11.49[%] compared to when there was no lighting control. The smaller the glazing ratio is, the less the total energy consumption is. Also, the application of the horizontal louver increases the total energy consumption under the same condition of glazing ratio.

• 한국인터넷방송통신학회논문지
• /
• 제14권3호
• /
• pp.147-153
• /
• 2014

본 논문에서는 안드로이드 플랫폼 기반의 스마트 감성조명 제어 시스템을 제안한다. 제안된 스마트 감성조명제어 시스템은 안드로이드 플랫폼, 감성조명 장치, 확장 디바이스와 지그비 모듈을 사용하였다. 안드로이드 플랫폼 기반의 스마트 감성조명 제어 시스템은 조도센서를 이용하여 자동제어와 수동제어 선택이 가능하며, 원하는 조명만을 선택하여 부분적인 제어도 가능하게 설계하였다. 제안된 스마트 감성조명 제어 시스템의 실험 결과 필요로 하는 부분의 조명기기 제어와 색온도 가변에 의한 제어가 가능하였고, 감성어휘에 의한 가변점등으로 효율적으로 기존 감성조명 제어 시스템보다 전력 소비를 감소시켰다. 그리고 상황에 적합한 색상과 밝기를 제어하여 사무실에서 행위를 함에 있어 집중력과 업무능력 향상에도 효과적인 제어가 가능하였다.

• 한국의류산업학회지
• /
• 제16권3호
• /
• pp.446-455
• /
• 2014

This study revealed the results related to the functionality of outdoor wear required when man and women in their 30s to 50s engage in outdoor activities. Based on the results of the survey, we proposed composition draft for a smart outdoor jacket with main functions of GPS device and light-emitting device using solar cell and EL. Absorption and release of sweat, functionality regarding rain and wind, and lightweightness, etc. from material functionalities of outdoor wear were found to be important. From function required in clothing for outdoor activity, location tracking, night glow, and lighting functions were found to be most important. For results investigating the necessity of the jacket's location tracking function and lighting function using solar cell, high scores of 3.9~4.0 were given. Purchase intentions for smart outdoor jacket with location tracking and lighting functions devised by this study were fairly positive and most responses indicated that the appropriate purchase price was between 200,000 to 300,000 won while possible problems of this smart outdoor jacket were listed in the order of washing inconvenience, high price, device weight, and discomfort in movement. The draft proposal to integrate with wearable devices for smart outdoor jacket prototype is as follows: Solar cell has been attached to the upper arm but placed inside a transparent pocket which has been detachable for washing convenience while the solar cell and controller have been integrated into a single unit. Using frequent movement exhibited by the arms, EL has been attached along the center line of the raglan sleeve for easy spotting when used as an emergency signal or for night lighting function during outdoor activity. GPS has been attached on the left sleeve so that the person can bend the left arm inward and operate the GPS screen with the right hand while walking or running outdoors.

• 한국의류학회지
• /
• 제35권3호
• /
• pp.292-303
• /
• 2011

This research suggested a draft proposal for a smart jacket design, which has applied wearable technologies to provide convenience in daily life. The smart jacket combined with a vest was the casual item for autumn and winter. The heating device was composed of the heating element, battery, controller, electric wire, connector, switch, and charger. A stable electronic conductor fiber of good heating effect with a flexible zigzag form has been selected for the heating element. The lighting device has been made in a way that attaches the LED and its power controller in the same mechanical device. As the result of the wearing test, the heating effect turned out to be effective in the order of: back, both the back and abdomen and only the abdomen. When wearing a smart jacket, the back and abdomen have been selected as favorable body parts for heating. Pockets and hems are selected as the adequate place to attach the LED lighting, and the brightness of LED lighting has turned out to be suitable and useful. Based on the test results, the first draft proposal has attached the heating element only in the back and its controller located in the inside pocket of the vest. In addition, the LED has been attached to the front pocket of the jacket. As to the second draft proposal, heating elements have been placed in the back and the abdomen. Each controller for the heating elements has been placed in the front and inside pocket of vest, and the LED lighting has been attached to the hem of the jacket. The smart jacket combined with a wearable device was assessed by functioning categories. The user showed a high satisfaction in the heating and illuminating function of a smart jacket.

• 조명전기설비학회논문지
• /
• 제25권11호
• /
• pp.14-25
• /
• 2011

Full-Color LED lighting system requires efficient control of the lighting color in order to easily achieve various color effects. In this paper, we present not only a portable color scanner using color sensors which can control lighting color directly from detected color but also methods to convert detected color to a complementary color, similar colors and so on. In addition, we propose a compensation method for measured sensor color to reduce measurement errors more than 50[%] in detected color. The developed color scanner is applied to control full-color LED ceiling light for emotional lighting.

• 전기학회논문지P
• /
• 제63권4호
• /
• pp.271-276
• /
• 2014

LED lighting has received worldwide attention as advantages, such as environment-friendly than the conventional light, the excellent energy efficiency, and a semi-permanent lifetime. The use of the SMPS increased with the rapid growth in the LED industry. Increased use of SMPS means an increase in the harmonic generation load. Therefore, LED lighting compared with conventional fluorescent lamps were tested in this paper for characterized by a light source, electrical and harmonic characteristics. Experiments results for LED lighting showed different characteristics from the existing fluorescent lamp. Especially harmonic characteristic results showed different characteristics in accordance with the power device manufacturing method for LED lighting.

• 전기학회논문지P
• /
• 제66권4호
• /
• pp.242-246
• /
• 2017

In this study, it was investigated about optical simulation in high brightness and high uniformity general lighting using glass light guide plate. And we adopt edge-light emission type light plate. Edge-light type lighting has been used LCD application, especially note PC or smart phone backlight unit. Because it had the good properties such as slim shape and light weight. We thought this type was suitable for general lighting application such as wall attached type or ceiling mount type. But many of edge-light type lighting had problems. It called slanted output light rays. That was main key parameter how could control the direction of output light rays. We investigated the solution of this problems, using ray tracing method, we recognized the major fact of the solution relied on the geometric structure of diffusing dot shape. We set the conditions of aspect ratio in diffusing dot shape such as 0.5 to 1. And, at first, we designed diffusing dots shape based on the results of optical simulation and made specimen. as above condition, and acquired good result in confirming dots shape such as the value of the output rays's peak angle was around 75 degrees. And good light distribution characteristics were measured by slated spectro-radiometer. It was shown that the effective ways of designing light distribution characteristics using optical simulation such as ray tracing linear method for making general lighting using glass light guide plate.