• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.871-876
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• 2022

In the construction industry, fatal accidents related to scaffolds frequently occur. To prevent such accidents, scaffolds should be carefully monitored for their safety status. However, manual observation of scaffolds is time-consuming and labor-intensive. This paper proposes a method that automatically analyzes the installation status of scaffold joints based on images acquired from a Unmanned Aerial Vehicle (UAV). Using a deep learning-based object detection algorithm (YOLOv5), scaffold joints and joint components are detected. Based on the detection result, a two-stage rule-based classifier is used to analyze the joint installation status. Experimental results show that joints can be classified as safe or unsafe with 98.2 % and 85.7 % F1-scores, respectively. These results indicate that the proposed method can effectively analyze the joint installation status in UAV-acquired scaffold images.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2001년도 학술대회논문집
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• pp.73-76
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• 2001

This paper dives the current status of lightning damages in apartments obtained by questionnaire and analysis the cause of ligntning damages. As a result, the apartments experienced lightning damages are assumed about 5[%] lot total apartments and the lightning surges invaded on power line are identified as the main cause of lightning damages in apartments.

• 조명전기설비학회논문지
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• 제30권2호
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• pp.49-56
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• 2016

In this paper, a prototype of power supply with a power factor correction is proposed. As a unique feature the proposed power supply, a status monitoring circuit is embedded on the switching power supply. The status monitoring circuit analyzes the functionality of the system and saves the key components of the power supply in the case of malfunctions. The results of various fault tests are reported to verify the operation and performance of the proposed method. This paper discusses the experimental results of the monitoring module and provides the technical information to monitor, predict, and troubleshoot the system against the potential failure of power supplies for real applications.

• 조명전기설비학회논문지
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• 제29권10호
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• pp.7-16
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• 2015

This study is intending to look into the status of the hitherto established local governments light pollution control ordinance, and to use the ordinance status as basic data of ordinance enactment related to light pollution in time of its establishment and revision in accordance with regional characteristics of each local government for the time to come. This study conducted this research in a total of 3-phase research methods. 1) This study inquired into the direction of the research plan through the theoretical consideration and analysis of the preceding researches after setting up research objectives according to research background and purpose. 2) Targeting 11 local governments which are enforcing the hitherto established ordinance, this study surveyed the status of the light pollution control ordinance. 3) This study carried out the contents analysis of the ordinance in the method of doing a comparative analysis of each provision of the ordinance according to local governments. It's hoped that on the basis of this research, local governments across the nation, which have not yet established the same ordinance, could minimize the damage to natural eco-system due to artificial lighting by promoting the urgent ordinance establishment suited for each region, and create human-oriented light environment by modifying various disorderly lighting environment.

• 산업기술연구
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• 제22권A호
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• pp.127-135
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• 2002

In this study, the preliminary risk assessment for the underground storage tanks(UST) in Chunchon city was implemented using the geographical information system(GIS). The estimation variables, such as the installation year, storage capacity, the distances from streams, and from groundwater pumping wells, were selected to estimate the relative risk levels. The weighting factors were given to all the estimation variables. Cumulative scores were induced by the combination of all the scores of the corresponding variables using the buffering technique and the overlay analysis in ArcView. Using the these process, the relative risk level of each UST was estimated. Some sites in this study are simplified and reduced because the number of useable data are limited or too enormous. Thus the selection of the comprehensive estimation variables and the proper weighting values are required for the future study. The methodology in this study could be served not only for the preliminary risk assessment of UST but also for the selection of the proper location of new and old UST. And, it can be used for the effective management system of UST.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2007년도 춘계학술대회 논문집
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• pp.393-396
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• 2007

Recently one level higher intelligent switching board than established one by the application of intelligent building and digital system are being constructed. Therefore facility's high efficiency, high degree satisfaction, miniaturaization, standardization through application of communication technology and monitoring and controlling by computer system utilized by web-basis power control system and electric IT are practiced. Especially network must be constructed through unified IBS server that monitors every educational institute's switching boards in real time control system. And I intend to create methods to save energy and raise electricity quality by power demand prediction and remote-controled management and operation. In this thesis I intend to suggest measures of forming unified system through researching educational institute's ways of constructing switching board and status analysis and overcoming technical difficulties in user's side and saving and maintenance expense.

• Current Photovoltaic Research
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• 제7권2호
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• pp.38-45
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• 2019

In this paper, we analyzed the present status of the safety manager and safety assurance aspects through a complex analysis on the operational aspects, marketability and electrical safety aspects of photovoltaic power generation facilities. In the analysis of the equipment status, we analyzed the status and operated status of the installed PV system in Korea and the correlation between the safety manager and the accident. In addition, we analyzed the direction of the ESS through the analysis of the installation status of the ESS, and applied it to the interpretation part of the ESS associated with the solar power generation. The status of the electric safety manager can be used to analyze the data for selecting the electric safety manager by capacity by analyzing the accident status, the electric safety manager operation status, the safety management time by capacity, and the electric safety manager market.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 E
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• pp.1743-1745
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• 1998

Insulators of 154kV T/L have been frequently damaged by fault currents. Arcing horn is a very effective and economic method for protection of insulators from the flashover. We developed arcing horns for 154kV T/L in order to protect insulators from the arc[1]. This paper analyzes the status of insulator failures in 154kV T/L after installation of the arcing horns.

• 한국인터넷방송통신학회논문지
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• 제20권5호
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• pp.195-205
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• 2020

최근 4차 산업혁명 시대로 인한 기술 발전이 도래하게 되었으며, 이러한 변화로 인해 데이터가 광범위하게 사용되기 시작했다. 빅데이터는 국가의 행정, 치안, 보안 등 시민의 안위를 위해서도 자주 사용되고 있다. 이러한 치안 유지의 효율성을 높이기 위해서는 CCTV의 설치 현황을 파악하고, 구역별 인구수와 비교하여 CCTV의 설치 비율, 그리고 구역별 범죄율 등을 분석하여 개선할 필요가 있다. 따라서 본 논문에서는 CCTV, 여성 인구, 유흥업소 등과 같이 범죄 발생률과 관련된 데이터를 수집하고, 이를 활용하여 CCTV의 효율적인 관리와 설치를 통해 범죄율을 줄이기 위한 공공 데이터 기반 빅데이터 분석 시스템을 개발한다.

• 한국산학기술학회논문지
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• 제21권8호
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• pp.563-571
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• 2020

공동구의 설치 목적은 반복굴착 방지, 재해·재난 예방 등이나 국내 공동구는 신도시 개발 계획에 포함되어 건설되었으며, 현재 기관별 의견 충돌 및 재원 조달의 문제로 공동구 설치는 어려운 실정이다. 본 논문에서는 신도시 및 기존 시가지의 공동구 활성화 개선방안 제시를 위하여 단계별 절차를 기준으로 연구를 진행하였다. 먼저 공동구 관련법 및 현황 조사를 수행하였으며, 현황에 대한 검토 및 분석을 기반으로 문제점을 도출하였다. 마지막으로 문제점 해결을 위한 개선방안을 제시하는 방법을 적용하였다. 관련법과 문제점을 기반으로 공동구 설치의무규모 선정을 위하여 최근 개발사업(도시개발, 택지개발, 도시재생) 현황을 분석하였으며, 공동구 설치의무규모 200만㎡ 이하에서의 경제적 타당성 분석을 통하여 적정 규모를 검토하였다. 신도시 및 기존시가지를 고려하여 공동구 추가설치지역 및 점용기관의 부담 경감을 위한 관리비 지원사항을 제안하였다. 또한 공동구 설치지역 검토를 위해 기본계획 등에 관한 세부 사항에 대하여 개선방안을 제시하였다. 본 논문은 향후 지역의 공동구 계획 및 설치 시 이해관계자의 원활한 업무 수행에 도움이 될 것으로 판단된다.