• Journal of Korean Tunnelling and Underground Space Association
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• v.22 no.6
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• pp.643-653
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• 2020

The concrete lining inspection by inspector after traffic control poses various problems such as congestion caused by traffic control and social loss costs resulting from it, and risks of traffic accidents and safety accidents for inspectors et al. To solve the problems, the concrete lining inspection has been carried out using automatic inspection equipment and image analysis that can be objectively and quantitatively investigated in overseas. In this study, to solve the problems of concrete lining inspection by inspector and to review improvement plan for inspection, inspection was carried out using automatic inspection equipment for ◯◯ tunnel that precision safety diagnosis has been conducted in 2019. Analysis was carried out for both inspection results. Automatic inspection equipment investigated defects in concrete lining such as cracks more accurately than precision safety diagnosis.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.125-134
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• 2022

Due to the development of smartphone technology, as of 2020, 91.9% of people use the Internet[1] to frequently acquire information through websites and mobile apps. As the number of homepages in charge of providing information is increasing every year, the number of applications for web vulnerability diagnosis, which diagnoses the safety of homepages, is also increasing. In the existing web vulnerability check, the number of diagnostic personnel should increase in proportion to the number of homepages that need diagnosis because the diagnosticians manually test the homepages for vulnerabilities. In reality, however, there is a limit to securing a web vulnerability diagnosis manpower, and if the number of diagnosis manpower is increased, a lot of costs are incurred. To solve these problems, an automatic diagnosis tool is used to replace a part of the manual diagnosis. This paper explores a new method to expand the current automatic diagnosis range. In other words, automatic diagnosis possible items were derived by analyzing the impact of web vulnerability diagnosis items. Furthermore, automatic diagnosis identified possible items through comparative analysis of diagnosis results by performing manual and automatic diagnosis on the website in operation. In addition, it is possible to replace manual diagnosis for possible items, but not all vulnerability items, through the improvement of automatic diagnosis tools. This paper will explore some suggestions that can help improve plans to support and implement automatic diagnosis. Through this, it will be possible to contribute to the creation of a safe website operating environment by focusing on the parts that require precise diagnosis.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1994.10a
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• pp.138-143
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• 1994

기기의 결함을 진단하는데에 전문자동진단시스템(EADS)을 사용하는 것은 고도의 숙련된 진단요원 없이, 시스템저자와의 질의응답과 같은 일련의 회의를 갖지 않고도 정확하고 또한 믿을만하게 기기상태를 측정 분석할 수 있는 가장 효과적인 방법이다. 전문자동진단시스템(EADS)은 일분에 5개의 기기들을 분석하고 진동전문분석가에 버금가는(94%) 정확성으로 진단결과를 제공한다. 많은 전문진단시스템 중에서 DLI의 ExpertALERT[4]는 가장 정확하고 정교한 진단시스템으로 평가되고 있다. 전문자동진단시스템(EADS)의 시행으로 프렌트의 기기고장으로 인한 조업중단의 회수가 줄어지고 정비비용을 절감하며 불필요한 정기점검식정비(PM)을 없앤다면 관계기술요원들의 진동에 대한 이해와 기술습득으로 한차원 높은 기기 정비를 통해 효율적인 생산성증가, 정비비용감소[5], 안전사고 미연방지등 많은 것을 함께 얻을 수 있다. Expert System 기술의 성공적인 적용이라고 정의할 수 있겠다.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.85-86
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• 2007

본 논문은 기존에 사람의 인력이나 열화상 카메라에 의존하고 있는 배전선 기자재 점검을 사람대신 로봇이 점검 작업을 하고 기존의 열화상 카메라만 사용하는 점검 방법에 CCD 카메라를 추가로 사용하여 열화상 이미지와 실영상을 같이 획득하도록 하여 배전선 점검 작업의 안전성 확보와 고장진단의 결과 값들의 객관성 있고 정확한 데이터를 획득을 할 수 있도록 하였다. 그리고 로봇이 가공지선을 자율주행하면서 발생하는 포스트 간 이동, 가공지선 회피, 가공지선 다 분기와 같은 문제가 발생하게 되는데 이러한 문제점들은 센서 융합 방법을 사용하여 로봇이 가공지선을 원활하게 자율주행을 할 수 있도록 하였다. 그리고 배전선 기자재들의 자연적 현상 때문에 발생하는 기자재의 부식과 열화로 변하게 되는 기자재들의 온도를 열화상 카메라로 분석하여 배전선 기자재들의 불량 기준 온도를 초과하게 되면 열화상 이미지와 CCD 카메라의 실영상 이미지가 자동으로 캡쳐 되고 저장 될 수 있게 하였다. 이러한 모든 동작들은 로봇이 자율주행을 하면서 이루어진다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.456-460
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• 2012

Privacy Protection Act of 30 March 2012 was performed. In general, personal information management to enhance security in the DB server has a security system but, PC for the protection of the privacy and security vulnerability analysis is needed to research on self-diagnosis. In this paper, from a PC to search information relating to privacy and enhance security by encrypting and for delete file delete recovery impossible. In pc found vulnerability analysis is Check user accounts, Checking shared folders ,Services firewall check, Screen savers, Automatic patch update Is checked. After the analysis and quantification of the vulnerability checks through the expression, enhanced security by creating a checklist for the show, PC security management, server management by semi-hwahayeo activates. In this paper the PC privacy and PC security enhancements a economic damage and of the and Will contribute to reduce complaints.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2004.11a
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• pp.305-308
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• 2004

텔레매틱스 시스템은 이동통신(CDMA)과 GPS를 기반으로 차량과 정보센터를 연결하여 차량 운행 중 요구되는 각종 정보를 실시간으로 제공하는 시스템이다 이러한 텔레매틱스 시스템의 주요 기능 중 하나가 차량 원격 진단 및 사고 통보시스템으로 차량 주행 중에 각각의 EMS. TMS. ABS/TCS. ABAG 등에서 진단된 차량의 이상 유무를 실시간으로 분석하고. 운전자 주행 패턴 및 차량 관리에 대한 사항을 점검하여 무선통신을 통해 정보센터로 전송하여 이를 D/B화함으로써 효율적 차량 관리가 가능하다. 또한 긴급 상황 발생 시 (차량사고 또는 고장) 센터로 자동 통보하여 빠른 인명 구조와 적절한 차량 견인 조치가 가능하다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.315-318
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• 2013

지금의 자동차는 정보기술(IT)기술과 융합되어 기존의 운송기능에서 운전자의 편의를 제공하는 기능을 제공한다. 운행 중 운전자에게 교통상황과 목적지로 가는 길을 알려주는 내비게이션은 운전자에게 효율적인 운전을 유도 할 수 있는 환경 만들어 준다. 하지만 운전자의 안전을 위해 자동차 상태를 자동으로 점검하여 알려주는 기능은 미비한 실정이다. 본 논문에서 개발하고자 하는 자동차 인포테인먼트 시스템은 안드로이드 플랫폼 기반 임베디드 장비를 이용하여 안드로이드에서 기본적으로 제공하는 기능을 통해 기존 자동차 엔터테인먼트 기능을 제공하며, 추가적으로 자동차 주행정보를 기록하여 사고유무를 확인하는 블랙박스 기능, 주행정보를 활용하여 자동차 소모품들의 수명을 점검하고, 자동차 내부 고장정보를 발견하고 알려주는 자동차 자가진단기능을 제공한다.

• Journal of the Korea institute for structural maintenance and inspection
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• v.20 no.4
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• pp.77-83
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• 2016

Recently, interests for maintenance of transmission tower are increasing to extend life of structures and reduce maintenance cost. However, existing classical diagnosis method of corrosion deteriorated degree on the transmission tower steel members, visual inspection, has a problem that error often due to difference of inspector's individual knowledge and experience. In order to solve the problem, this study carried out to develop the corrosion deterioration inspection tool for transmission tower steel members. This tool is composed of camera equipment and computer-aided diagnosis system. We standardized the photographing method by camera equipment to obtain suitable pictures for image processing. Diagnosis system was designed to evaluate automatically degree of corrosion deterioration for member of transmission tower on the basis of the RGB color image processing techniques. It is anticipated that developed the corrosion deterioration inspection tool will be very helpful in decision of optimal maintenance time for transmission tower corrosion.

• Journal of the Korean Institute of Gas
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• v.2 no.3
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• pp.88-95
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• 1998

Vibration analysis of rotating machinery can give an indication of possible faults thus allowing maintenance before further damage occurs. Current predictive maintenance system installed in Pyung-tak has the ability to diagnose the mechanical problems within the LNG Pump when the vibration exceeds preset overall alarm levels. In this study, LNG pump auto-diagnosis system based upon Windows NT and DSP Board is developed. This system analysis velocity signal acquired from dual accelerometer input monitor system to diagnose pump condition. Many plots which display machine condition are shown and features of vibration are stored in every time. If the fault is found, the system diagnoses automatically using expert system and trend monitoring. Operator checks pump condition intuitively using personal computer monitor.

• KEPCO Journal on Electric Power and Energy
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• v.5 no.4
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• pp.263-273
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• 2019

South Korea's OF cable is reaching its expected design life of 30 years, and as a result, the risk of failure is increasing. Therefore, it is necessary to diagnose the long-term operating OF cables through accurate diagnosis at the right time to prevent the failure. Currently, the KEPCO periodically conducts DGA. However, the gas found in DGA is caused by oil deterioration as well as insulation paper. Therefore, the analysis of the degree of polymerization and furan compounds which is an evaluation of insulation paper considered to be the life of OF cables is required. In addition, the results of the evaluation of deterioration of insulation paper need to be checked for correlation with the results of DGA. In this study, DGA carried out through GC, the degree of polymerization was analyzed using an automatic viscometer, and HPLC was used to detect the furan compounds. In addition, the obtained results were applied to the SVM technique, which was recently introduced to determine abnormalities in OF cable. And the results which were accurate and reliable were obtained.