• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.373-376
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• 2007

현재 건설 산업에서 나타나고 있는 숙련공 부족 현상, 기술자의 고령화 문제, 안전상의 문제 등을 해결하기 위한 대안으로 자동화 건설기계들의 개발 요구가 점점 높아지고 있다. 이러한 요구에 따라 본 연구에서는 효율적인 토공작업을 가능하도록 하고 안전성을 보장할 수 있는 안전관리시스템 개발의 선행연구로서 굴삭기 주변 장애물 탐지를 위한 개념 알고리즘을 개발하여 그 적용방안을 제안하고자 한다. 또한 이를 통해 자동화 굴삭기 개발에 있어 기반기술을 개발하고, 더욱 안전한 건설 환경 조성에 일조할 수 있을 것으로 사료된다.

• 대한전기학회논문지:전력기술부문A
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• 제55권4호
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• pp.139-143
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• 2006

Recently, standard of living improved and Information-Communication industry developed rapidly. Thereby, interest about electric power quality is rising worldwide. So, research and Development to enhance electric power quality in various viewpoint until most suitable supply system from each kind device to improve electric power quality. And specially, interest about voltage quality is rising by diffusion increase of information communication appliance and minuteness control appliance etc. Also Power consumption is increasing, but expansion of large size generator by environmental and site security problem is difficult. So, introduction of distribution generation is investigated actively by electric-power industry reorganization. Voltage management of power system had been controlled by ULTC (Under Load Tap Changer) in substation and pole transformer on the high voltage distribution line. But, voltage control device on substation and distribution line is applied each other separatively. Therefore, efficiency of line voltage control equipment is dropping. Also, research about introduction upper limit of distribution generation is consisting continuously. This paper presents cooperation use way between voltage control device and introduction upper limit of distribution generation for most suitable voltage control in distribution power system.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2008년도 춘계 종합학술대회 논문집
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• pp.611-613
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• 2008

본 논문은 모바일 전화기를 사용하여 가정용 전자 기기를 제어하기 위한 시스템에 대하여 기술한다. 현재 홈 네트워크 산업은 급성장하는 네트워크 시대에 맞추어 많은 관심을 얻고 있으며 현존하는 시스템의 호응도 역시 높아지고 있는 실정이다. 본 논문에서는 이와 관련하여 모바일 전화기를 사용하여 가정에 있는 보일러 온도를 원격으로 조절하기 위한 시스템을 개발하였다. 이를 위하여 본 논문에서는 서버와의 통신을 위한 모바일 프로그래밍, 모바일 브루(Brew), RF 무선 통신 등의 기술을 실험에 사용하였다. 본 논문은 홈오토메이션 구성에 있어서의 RF 무선통신 및 모바일 기기를 사용한 또 다른 방법을 제시하였으며, 홈 네트워크 산업의 발전에 조금이나마 기여할 수 있으리라 기대한다.

• 한국정밀공학회지
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• 제21권11호
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• pp.61-68
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• 2004

Recently, there has been an increasing demand for computer-vision based inspection and/or measurement system as a part of factory automation equipment. Existing manual inspection method can inspect only specific samples and has low measuring accuracy as well as it increases working time. Thus, in order to improve the objectivity and reproducibility, computer-aided analysis method is needed. In this paper, front and side profile inspection and/or data transfer system are developed using computer-vision during the inspection process on three kinds of pipes coming from a forming line. Straight line and circle are extracted from profiles obtained from vision using Laplace operator. To reduce inspection time, Hough Transform is used with clustering method for straight line detection and the center points and diameters of inner and outer circle are found to determine eccentricity and whether good or bad. Also, an inspection system has been built that each pipe's data and images of good/bad test are stored as files and transferred to the server so that the center can manage them.

• 한국철도학회논문집
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• 제10권3호
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• pp.343-349
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• 2007

The flow velocity distribution at inlet and exit of a DPF was measured using a Pitot tube and 2-D positioning equipment. An adaptor which was designed for accessing the Pitot tube probe into inlet of the DPF was fabricated with inlet flange of the DPF. The Pitot tube which was mounted in the 2-D positioning machine could access to the inlet of the DPF through the rectangular window of the adaptor. Automation of the velocity measurement at the inlet and exit of the DPF was effectively achieved and measuring time was reduced drastically. The flow velocity distribution at the inlet of the DPF showed parabola shape with maximum velocity near to the center of the DPF, as expected. The velocity distribution at the exit of the DPF showed crown shape, that is, the flow velocity distribution near to the center of the DPF is lower than that at surrounded peripheral region of the DPF.

• 한국컴퓨터정보학회논문지
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• 제13권5호
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• pp.1-10
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• 2008

본 논문은 다양한 환경에서 자동화장비를 제어하고 감시하기 위하여 OPC 기반의 통합형 HMI 시스템 개발에 대하여 논한다. 다양한 프로세스제어 분야의 통신 표준 메커니즘을 위해 제안된 OPC표준에 따라 임베디드 OPC 서버를 구현하고, OPC서버의 데이터를 로컬 장비와 인트라넷 클라이언트, Web 페이지 등 다양한 HMI 환경에 접속할 수 있도록 인터페이스 방법을 제안한다. 본 논문의 방법을 다양한 제어 시스템에 적용함으로서 이기종간의 연결 및 데이터 상호교환 뿐만 아니라 네트워크상의 원격 제어 및 웹 모니터링도 가능하기 때문에 유비쿼터스 환경의 HMI 시스템 구현에 기여할 것으로 기대된다.

• 대한조선학회논문집
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• 제56권3호
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• pp.187-199
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• 2019

In the case of gas carriers and oil tankers, pipes are installed on the upper deck as a moving passage to load LPG, LNG, crude oil, etc. Pipes used for loading or unloading liquid cargo in cargo holds are connected to the hull through support structures. However, many cases of hull damage have been reported where the various equipment and support structures are installed on the upper deck. It is assumed that not only the structural discontinuity where the hull and the pipe support structure meet, but also action due to the pipe loads and the hull girder bending moment are simultaneously affected. This paper deals with the design and strength evaluation of the support structure of pipes and cables installed on the upper deck of commercial ships and offshore structures. For these supporting structures, design conditions and working loads were defined. The design procedure was established through the structure analysis on the method of determining the member dimensions. A series of finite element analysis was performed on the factors to be considered in the design and the effects were discussed. The accuracy and design periods of the strength evaluation was improved and reduced by application of the automation program in the finite element analysis. It is also expected that the design reliability of the shipyard is improved.

• 대한건축학회논문집:구조계
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• 제35권11호
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• pp.163-170
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• 2019

Most of the current crack investigation work consists of visual inspection using simple measuring equipment such as crack scale. These methods involve the subjection of the inspector, which may lead to differences in the inspection results prepared by the inspector, and may lead to a large number of measurement errors. So, this study proposes an image-based crack detection method to enhance objectivity and efficiency of concrete crack investigation. In this study, YOLOv2 was used to determine the presence of cracks in the image information to ensure the speed and accuracy of detection for real-time analysis. In addition, we extracted shapes of cracks and calculated quantitatively, such as width and length using various image processing techniques. The results of this study will be used as a basis for the development of image-based facility defect diagnosis automation system.

• 드라이브 ㆍ 컨트롤
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• 제17권4호
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• pp.103-112
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• 2020

Field robots are used in various fields, such as agriculture, forestry, manufacturing, and construction; their use has recently expanded to include submarine areas. Field robots can aid in various tasks, such as soil transport, ground clearance, and dismantling of buildings. As field robots are used in a variety of different areas, the difficulty of the work is also quite varied. Increased difficulty is associated with an increased risk of accidents involving the field robot. In order to reduce the accident rate of field robot workers, the need for digitalization and automation of field robots is becoming more of an issue. To this end, it is necessary to study a system that enables workers to do their work without directly contacting a field robot. Therefore, in this paper, we introduce a control system for wireless remote control of a small field robot. The field robot can be wirelessly controlled by a worker in a remote location if the worker cannot be present at the work site. The implemented remote system is tested according to the type of work, and the operating characteristics of the remote system are assessed.

• 동아시아경상학회지
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• 제10권2호
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• pp.105-113
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• 2022

Purpose - An increase in automation has been as a result of digital technologies. The data will be instrumental in the determination of the services that are more necessary so that more resources can be allocated for them. The purpose of the current research is to investigate how big data utilization will help increase the profitability in the industry 4.0 era. Research design, Data, and methodology - The present research has conducted the comprehensive literature content analysis. Quantitative approaches allow respondents to decide, but qualitative methods allow them to offer more information. In the next step, respondents are given data collection equipment, and information is collected. Result - The According to qualitative literature analysis, there are five ways in which big data utilization will help increase the profitability in the industry 4.0 era. The five solutions are (1) Better Customer Insight, (2) Increased Market Intelligence, (3) Smarter Recommendations and Audience Targeting, (4) Data-driven innovation, (5) Improved Business Operations. Conclusion - Modern companies have been seeking a competitive advantage so that they can have the edge over other companies in the same industries providing the same services and products. Big data is that technology that businesses have always wanted for an extended period of time to revolutionize their operations, making their businesses more profitable.