• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.962-965
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• 2005

This study is an inspection of press forming product and mould using reverse engineering system. The inspection process on production field involves a lot of errors because of the hand-work so we focussed on improving the measured precision through performing the effective inspection using 3D non-contact scanner. By so doing that, we improved the precision of press forming product by analyzing the cause following the inspection result. Through the inspection, we applied it to the reverse engineering and we could improve the inspection process.

• 기술사
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• 제43권2호
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• pp.53-59
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• 2010

This research is about the inspection system which is for maintenance of laterals of local RBF(River bed Filtration). Inspection system is designed for local use in order to endure water resistance up to 50m and it also can examine the internal condition and colgging of laterals by moving inside of the laterals about 100m back and forward. We will conduct performance test of inspection system at the lacal RBF site and present its result.

• 한국정보전자통신기술학회논문지
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• 제10권5호
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• pp.359-363
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• 2017

LED(Liquid Emitting Diode)프레임 장치는 한국을 대표하는 디스플레이 분야에서 큰 비중을 차지하고 있다. LED는 TV나 모니터, 노트북, 핸드폰 등 에 필수적인 부품이다. 일본이나 대만, 중국 등에서 LED에 대한 투자를 강화하면서 생산성 향상이 중요한 사항이 되고 있다. 하지만 부품의 크기가 점점 작아지면서, 사람의 눈에 의한 일관적이지 못한 검사는 신뢰성이 문제가 되어 LED 모듈 검사 분야에서 자동 검사 공정은 필수적인 사항이 되고 있다. 본 논문에서는 컴퓨터 비전 기술을 이용하여 시각 검사 공정의 결함을 검사한다. LED 프레임에 대한 검사를 신속하고 정확하게 함으로써 공정상의 효율을 높이고 검사시간을 단축하였다. 검사 시스템을 현장에 적용한 결과 빠르고 정확하게 검사가 가능함을 확인하였다.

• 한국압력기기공학회 논문집
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• 제12권1호
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• pp.93-100
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• 2016

Since the sodium-cooled fast reactor is operated in a hostile environment due to the use of liquid sodium as its coolant, advanced techniques for in-service inspection are required to periodically verify the integrity of the reactor. This paper presents the development of in-service inspection techniques for Proto-type Generation IV Sodium-cooled Fast Reactor. First, the 10 m long plate-type ultrasonic waveguide sensor has been developed for in-service inspection of reactor internals, and its feasibility was verified through several under-water and under-sodium experiments. Second, the combined inspection system for in-service inspection of ferromagnetic steam generator tubes has been developed. The remote field eddy current testing and magnetic flux leakage testing can be conducted simultaneously by using the developed inspection system, and the detectability was demonstrated through several damage detection experiments. Finally, the electro-magnetic acoustic transducer which can withstand high temperature and be installable in the remote operated vehicle has been developed for in-service inspection of the reactor vessel, and its detectability was investigated through damage detection experiments.

• 한국건설관리학회논문집
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• 제6권1호
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• pp.140-150
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• 2005

최근 공동주택의 마감자재가 고급화, 다양화되면서 품질만족에 대한 고객의 욕구가 과거 그 어느 때 보다도 증대되고 있으며 건설업체 또한 자사의 신인도 및 브랜드 가치의 상승을 위해 정밀시공을 통한 품질확보에 많은 노력을 기울이고 있다. 그러나 국내 공동주택 현장의 품질점검 및 하자관리는 현장관리 인원의 부족, 과다한 문서 발생, 업무 절차의 복잡성 및 관련주체간의 비효율적인 의사소통으로 품질점검에 따른 시설물의 이력관리 및 하자관리가 신속히 이루어지지 못하고 있는 실정이다. 따라서 본 연구의 목적은 이러한 품질점검 및 하자관리의 문제점을 해결하고자 PDA 및 웹을 활용하여 공동주택의 품질점검 및 하자관리에 대한 정보를 실시간으로 수집하고 이를 통해 관련 주체간의 효율적인 업무처리와 세대별 이력관리를 지원할 수 있도록 하는 공동주택 품질점검 및 하자관리 시스템을 구현하는 것이다. 본 연구에서 제시된 품질점검 및 하자 관리 시스템의 활용은 기존의 수작업에 의한 업무 절차를 간소화하고 관련 조직간의 원활한 의사소통과 시설물의 하자 관련 이력 데이터를 구축케 함으로써 품질관리 관련 업무의 질적 향상을 도모하고 궁극적으로는 품질 향상을 통한 건설업체의 고객 만족도 및 신인도 제고에도 크게 기여할 수 있을 것으로 기대된다.

• The Plant Pathology Journal
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• 제30권4호
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• pp.440-444
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• 2014

Iris yellow spot virus (IYSV) is a plant pathogenic virus which has been reported to continuously occur in onion bulbs, allium field crops, seed crops, lisianthus, and irises. In South Korea, IYSV is a "controlled" virus that has not been reported, and inspection is performed when crops of the genus Iris are imported into South Korea. In this study, reverse-transcription polymerase chain reaction (RT-PCR) and nested PCR inspection methods, which can detect IYSV, from imported crops of the genus Iris at quarantine sites, were developed. In addition, a modified positive plasmid, which can be used as a positive control during inspection, was developed. This modified plasmid can facilitate a more accurate inspection by enabling the examination of a laboratory contamination in an inspection system. The inspection methods that were developed in this study are expected to contribute, through the prompt and accurate inspection of IYSV at quarantine sites to the plant quarantine in South Korea.

• 품질경영학회지
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• 제23권4호
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• pp.74-89
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• 1995

In recent years, the safety of customers and the demand for rights to be protected from the risk have become stronger than ever day by day, and the function concerning product liability(PL) and quality assurance(QA) has been emphasized. Basically these functions can be obtained by inspection and there is the single rectifying sampling inspection for attribute (KSA-3105) as an existing method. But we can not say this method is good enough because of limitations in the range of applications and the approximate design of inspection methods which can not meet the rapidity and accuracy of quality information transfer according to the maturity of information period. Therefore, in this paper, a new algorithm is developed which can design the accurate inspection method by using the linear cost function that has not been considered in the existing inspection methods. Also in addition to this, a optimal rectifying sampling inspection plan, contributing to minimize the total costs, can be developed by programming the algorithm developed in this study and it can be applied to any field having many processes almost limitlessly.

• 대한산업공학회지
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• 제17권1호
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• pp.17-27
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• 1991

Whenever environment allows for a more efficient application of the advanced methods published in books or articles, such methods must necessarily be applied in practice. One of the major reasons why the numerous methods are ignored is the lack of experts who could make selections of proper inspection method. An expert system which would perform as if each factory had a resident expert is developed. The expert system is mainly comprised of three parts. The first part presents the performance measures of the inspection methods currently used or inquired. The system includes almost all the inspection methods presented in Schilling's book. The second part presents an appropriate inspection method by inputting various environments through the user interface. The third part prints the inspection methods in accordance with the format which will be used in the field, stores the inspection results that follow, and then administers the acceptance inspection as a system by considering the past results.

• 한국컴퓨터정보학회논문지
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• 제21권6호
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• pp.71-76
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• 2016

In this paper, we propose the mobile visual inspection information system using DGPS and portable range finder for levee safety inspection. Instead of existing visual inspection management method that is stored hand-written data, this system is designed to manage directly the visual inspection information using mobile devices in the field of levee. And through extracting accurate DGPS coordinates information about damage location of levee, this system is developed to ensure efficiency for the main task arising from the levee site such as inspection, maintenance and reinforcement. Furthermore, when damage has occurred at the point that inspector is not able to approach, this system can record the damage site data correctly, by converting data such as position, orientation and height of the damage point into the World Geodetic System coordinates. The position, orientation and height data was extracted automatically through the DGPS and portable range finder. And by applying the augmented reality method, this system was implemented for inspector to revisit the point of damage easily in order to perform the management, maintenance and reinforcement of the levee later.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.574-576
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• 2010

본 논문에서는 CCD 카메라를 이용해 리드프레임의 내부 리드부의 넓이와 선명도 및 결함 등을 고속으로 검사하는 시스템을 개발한다. 본 시스템은 조명부, 검사부, 조명 제어부, GUI 등으로 구성된다. 개발 기술로는 조명 제어, 고속 검사 알고리즘, 검사 분해능을 올리기 위한 계측기술 등이다. 현장 실험을 통해 개발된 시스템의 유효성을 검증한다.