• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.176-177
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• 2011

현재, 해양 선박의 경우 주간에는 육안을 통하여 쉽게 항구를 찾아 쉽게 선박을 정박시키거나 출항을 할 수 있지만, 사람의 시야를 확보할 수 없는 야간의 경우에는 선박의 전자 장비에 의존하거나 해상위에 떠 있는 해상 유도 표시등을 이용하여 선박을 정박시키거나 출항을 하고 있다. 또한, 현재의 많은 해상 유도 표시등은 GPS를 사용하여 제품을 설계하고 있지만, 시간에 따른 점멸 제어에 대한 오차가 누적되어 일정시간의 경과 후에는 유도등의 동기화에 많은 문제가 발생하고 있는 실정이다. 본 논문에서는 야간에 선박의 안전한 출항과 정박의 안내를 위하여 해상 유도 표시등의 동시 점멸에 관한 논문으로 PGS 시간 정보 데이터를 이용하여 일정시간이 흘러간 뒤에도 유도등의 점멸 제어 누적 오차를 제거할 수 있는 알고리즘을 개발하여 기존의 제품을 보완할 수 있는 알고리즘을 제안하고 그 성능을 실험을 통하여 제시하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.989-991
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• 2022

최근 들어 기후변화와 함께, 화재 발생이 증가함에 따라 인명피해와 경제적 피해가 늘고 있다. 화재 발생시 인명 피해를 줄여주는 소방시설 중 경보설비와 유도등설비는 위험 상황시 경보와 함께 동선을 유도하는 유도등을 보고 재실자들이 안전한 공간으로 신속하게 대피할 수 있도록 하는 소방설비 이다. 이중에서 유도등설비는 화재발생 상황에서 매우 중요한 역할을 맡고 있다. 특히 복잡한 동선을 가지고 있는 복합건물 및 지하철, 고층건축물에 신속한 대피 유도에 필요한 설비이다. 그러나, 화재 초기에 신속한 대피를 해야 하는데 5분도 되지 않아 화재로 인해 발생한 가스는 검은 연기로 유도등의 역할과 효과를 저해하는 현상을 가져온다. 즉 유도등의 녹색빛이 보이지 않는다. 이는 저시력자 또는 시력에 장애를 가지고 있는 자들은 더욱더 유도등을 확인하고 대피 하기란 쉽지 않게 된다. 이런 단점이 있는 기존의 유도등에 IoT(Internet of Things)와 함께 증강현실 이미지를 스마트기기에 활성화 한다면, 진한 검은연기로 인한 빛의 가림으로 인한 유도장애에 대해서 개선 할 수 있을 거라 생각되어, 변류기의 전류 감지를 시작으로 그 신호를 스마트기기에 녹색의 유도 이미지를 활성화하여 골든타임에 대피가 신속하도록 설비를 구현하여 그 가능성을 확인하였다.

• Journal of the Korean Society of Hazard Mitigation
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• v.8 no.4
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• pp.81-85
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• 2008

In this study, Standards of Lighting Appliance and Standard of Model Approval and Inspection Technology for EXIT LIGHT are compared so as to analyze stability of a exit light which is fire product. Test items, which are not included in Standard of Model approval and Inspection Technology for EXIT LIGHT, are deduced from aforementioned comparison and analysis. Also the derived test items are experimented with a exit light. For a power factor correction, a power factor correction circuit is designed and power factor, crest factor, asymmetry ratio, luminance variation are analyzed. In order to show the validity of designed circuit, current waveform and voltage waveform are measured.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.24 no.4
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• pp.158-163
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• 1988

The author has examined how sea-bass, Epinephelus septemfasciatus respond to surface attracting lamps line and underwater attracting lamps line in the experimental water tank (550L$\times$58W$\times$73H cm). The attracting rate was investigated in accordance with the intervals of lighting and putting out hour (1, 5 minute) when each of the attracting lamps was gradually switched off after they were switched on all at once. The results are as follows: 1. Distribution of fish at the illuminated section; (1). The fish was more distributed in the section adjacent to the extinguished section. (2). Difference of distribution between section and section and section was greater at surface attracting lamps as compared with underwater attracting lamps. (3). Surface attracting lamps was more distributed than underwater attracting lamps at intervals of 5 minutes. 2. Attracting rate of the last section; (1). The rate was showed increasing as illuminating time elapse and became L type. (2). Attracting rate in underwater attracting lamps was higher than surface attracting lamps at intervals of 1 minutes and lower than surface attracting lamps at intervals of 5 minuets.

• Fire Science and Engineering
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• v.14 no.1
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• pp.22-26
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• 2000

Emergency lamp is installation usage on an emergency situation or firing. It's an offer at least of brightness. It's lighting to common source usually. It's transferred to reserve battery on power stoppage. This emergency lamp is lighted from solar cell system. The solar cell should be operated at the maximum power point. This paper proposes the new control method that half-bridge inverter using the solar cell can operate emergency lamp.

• Proceedings of the KIEE Conference
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• 2009.04a
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• pp.213-215
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• 2009

본 연구에서는 화재시 재실자의 안전한 피난을 유도하는 피난유도시설의 설치기준과 지하철역사, 대형편의점(마트), 종합병원 등 의료시설, 학교 등 교육시설과 같은 불특정 다수의 사람이 이용하는 건축물에 설치된 피난 유도등의 현장적용사례와 유지관리 실태를 조사하였다. 이러한 건축물에서 재실자의 피난에 영향을 미치는 요소, 예상되는 인명 안전 등에 대하여 분석하여 문제점을 도출하였다. 본 연구결과는 기존의 소방시스템의 문제점으로 지적되고 있는 화재 발생 위치와 확산 경로에 관계없이 획일적으로 피난 방향을 표시하고 있는 시스템의 개선을 위한 최적의 피난 경로를 표시하는 인공지능형 방향성 유도등 개발에 활용할 것이다.

• Fire Science and Engineering
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• v.33 no.6
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• pp.28-34
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• 2019

The purpose of this study is to examine the influence of occupant's path selection on the shape of the pictogram and the opening/closing of the door. This study was carried out through a simulation experiment using computer virtual reality. Exit light pictogram for exit door and exit light pictogram for passage were arranged for each scenario in type T corridor and type + corridor. The computer graphic was used to carry out the simulation. In addition, we analyzed the response of human behavior according to the two directions (left and right) of exit light pictogram for exit door and the effect of opening direction of doorway. In addition, the change of decision-making according to the presence or absence of exit light pictogram for passage was confirmed. The results of the direction selection response were as follows. First, in the case of the T-shaped corridor, if the exit light was not installed on the door, it was influenced by the opening direction of the door. Second, when the exit light is attached to the door, the selectivity in the direction that matches the exit light pictogram direction is high. As a result, it was confirmed that the pictogram direction of the exit light influenced the evacuation route selection of the occupants.

• Fire Science and Engineering
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• v.33 no.6
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• pp.181-185
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• 2019

In this study, Exit light installed in offices, malls, hospitals, and factories were analyzed to analyze the luminance performance of CCFL and LED light sources. In addition, fire protection products with electrical characteristics such as Exit light may change their performance due to ambient temperature, humidity, and dust. So it was extracted by installation place and analyzed its characteristics. As a result of the experiment, Exit light for CCFL type showed the value of 'ratio of luminance 2' for large, medium and small. Considering that the reference value was 'lower than 9', the value was very good and it can be seen that there is almost no change in ratio of luminance due to aging. The Exit light for LED type showed a value of 'ratio of luminance 5', which means that the light on the display surface is not uniform. In addition, there was almost no change in ratio of luminance due to ageing, but the ratio of luminance was larger than Exit light for LED type. This is an unsatisfactory result from a visual point of view. To improve this, it is necessary to disperse the light of LED light source and strengthen the regulation on ratio of luminance.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.5
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• pp.109-114
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• 2009

At the present time, buildings are designed higher and more complex than ever before. Therefore the potential disasters are happened such as fire, power outage, earthquake, flood, hurricanes. Their disasters require people inside buildings to be evacuated as soon as possible. This paper presents a new disaster evacuation guidance concept of inner buildings, whiche aims at integrated the constructing of a sensor network and a guidance light networks in order to provide a quick detection of disasters and accurate evacuation guidance based on indoor geo-information, and sends these instructions to people. In this paper, we present the integrated logical model based on sensor and guidance light networks for the fire disaster management in inner building using our concept. And we verify proposed logical model according to experiments with visualization and operations on map.

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1978.04a
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• pp.97.1-97
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• 1978

발효에 guaicol, vanillin 및 O-V-anillin phenol 등의 유도체를 처리한 결과, yeast, Bacillus subt-ilis, Brevibacterium flavum, Pseudomonas ovalis 등의 mass, 호흡량, 성장속도 등에 미치는 영향이 크므로 발효공학에 이들 phenol 유도체를 이용하면 생산성을 향상시킬 수 있을 것으로 예상되었다.