• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.529-538
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• 2002

콤바인 곡물 포대 자동화장치개발은 콤바인 운전자 및 작업자의 피로경감과 안전보호 및 작업성능의 향상을 기하기 위하여 행하여 졌으며, 본 연구의 개발은 기존의 콤바인 작업이 2명이 소요되는 것을 운전자 1명이 수확작업을 할 수 있도록 하며, 노동력의 절감과 작업의 편리성을 도모하고자 하였다. 이러한 본 연구의 결과는 다음과 같다. 1) 곡물 포대의 정 위치화를 위해서 용량형 근접위치센서를 설치하였으며, 포대의 과다이송에 따른 모터의 부하를 최소화 하기위해 선단부와 슈트부에 각각 위치센서를 설치하여 포대의 위치를 제어하였다. 2) 곡물 투입장치부의 작동은 공기압축기와 공압실린더를 이용한 공압시스템을 사용하였으며, 곡물의 투입량제어는 슈트부 게이트의 열림시간을 제어하여, 곡물의 투입량을 제어하였다. 3) 포대 배출장치는 이송장치로부터 이송되어진 충진된 포대를 제 2의 포대가 충진하는 영역 밖으로 밸트 컨베이어를 이용 이송하도록 하였다. 4) 포대는 B3 포대의 경우가 가장 투입량이 많은 것으로 나타났으며, 가진을 한 경우가 하지 않은 경우보다 비교적 투입량이 많은 것으로 나타났다. 본 연구에서 개발된 포대 자동화장치에서는 포대의 가진 장치를 장착하지 않았으며, 실험은 인위적으로 가진을 하여 실행하였으며, 향후 전체적인 장치의 성능 향상을 위해서 포대의 가진 장치가 필요한 것으로 나타났다.

• Journal of KIISE:Computing Practices and Letters
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• v.16 no.5
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• pp.591-595
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• 2010

In this paper, a method that dynamically adapts the traffic flow of automated guided vehicles (AGVs) used in automated container terminals to the changing operational condition is presented. In a container terminal, the AGVs are vulnerable to traffic congestion because a large number of AGVs operate in a limited area. In addition, dynamically changing operational condition requires the traffic flow of AGVs to be continuously adjusted to keep up with the change. The proposed method utilizes a genetic algorithm to optimize the traffic flow. Exploiting the dynamic nature of the problem an approach that reuses the results of the previous search is tried to speed up the convergence of the genetic algorithm. The results of simulation experiments show the efficiency of the proposed method.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.11a
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• pp.317-330
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• 2005

시맨틱 웹 관련연구가 증가함에 따라 지능형 에이전트 혹은 규칙기반 시스템 등의 지능적인 웹 환경에 대한 기대 역시 커지고 있다. 그러나 규칙기반 시스템의 활용에는 아직도 규칙습득이 많은 제약이 되고 있다. 이와 같은 제약을 극복하기 위해 웹 페이지로부터 규칙을 습득하기 위한 XRML 방법론이 제안되었다. XRML 방법론은 웹 페이지로부터 규칙을 식별하고 식별된 결과로부터 자동으로 규칙을 생성하는 두 단계로 구성되어 있다. 여기서 규칙의 식별은 규칙생성의 자동화 정도에 매우 중요한 영향을 미친다. 그러나 규칙을 식별하는 작업은 대부분 지식관리자의 수작업에 의존하고 있다. 이러한 지식관리자의 부담을 줄이기 위해 본 논문에서는 온톨로지 기반의 개선된 규칙식별 방법론을 제안하고자 한다. 이를 위해 먼저 OntoRule이라는 이름의 온톨로지를 설계하였다. OntoRule은 자동화된 규칙 식별을 지원하기 위해 사용되며, 규칙의 구성요소들과 구조에 대한 정보를 포함하고 있다. 그리고 OntoRule을 이용하여 규칙을 식별하는 절하를 제안하였다. OntoRule과 규칙식별 절차를 제안하는 과정에서 온톨로지 학습효과, 하향식 접근방식과 상향식 접근방식의 차이, 온톨로지 적용범위 관리, 규칙 구성요소의 식별순서, 생략된 별수의 식별과 같은 놈점들이 고려되었다. 마지막으로 실험을 통해 제안된 방법론의 효과를 보였다.

• Journal of the Korean Society for Precision Engineering
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• v.11 no.2
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• pp.120-133
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• 1994

홀로그래픽 간섭계측기로터 나오는 영상 데이터를 해석하는 전문가시스템에 대하여 기술하였다. 그동안 간섭 띠무늬(fringe)를 해석하는 방법들이 어느 정도의 자동화를 이룩하며 개발되어왔다. 그러나, 복잡한 간섭 띠무늬 패턴(fringe pattern)및 심한 잡음이 생기게 되는 고속도 항공공학 분야 또는 실험기계공학 분야에서는 신뢰할 만한 자동화를 이룩하기가 매우 힘들었다. 현재 사용가능한 방법중에는 간섭띠무늬 추적, 위상전이, 푸리에 변환, 회귀분석 등이 있는데, 이들은 소음제거나 데이터 수정을 하는데 있어서 극히 국부적인 정보에만 의존하였다. 결과적으로, 특별히 심한 소음이 있는 경우, 부정확한 위상중첩이나 간섭띠무늬 순차배열문제에 부딪히게 되고 따라서 작업자의 수작업이 심각하게 필요하게 된다. 본 논문에서는 간섭띠무늬 추적방법의 자동화 를 위한 새롭고 포괄적인, 규칙기반 전문가시스템에 대하여 기술하였다. 새로 개발된 전문가 시스템은 간섭띠무늬 패턴에 대한 전체적인 또는 지연적인 정보를 추출해 내고 또 전문가가 가지고 있는 지식을 이용한다. 이 전문가 시스템은 저수준 및 고수준 처리를 동시에 할 수 있도록 상호연결기구를 채택하여 간섭띠무늬를 해석하는 적절한 해결책을 마련하였다. 또한 위상전이나 푸리에 변환 방법에서 문제가 되는 자동위상 중첩에 대해 개발된 전문가 시스템의 응용의 가능성에 대해서도 기술하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.2
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• pp.339-344
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• 2019

In this paper, a digital home electric overload alarm system based on DSP for smart home automation which can minimize electrical fire damage caused by an home electrical overload was made experimentally. To verify the validity of the home electrical overload alarm technology, an electric overload alarm performance evaluation system which can artificially generate the electrical overloads was designed, developed, and constructed, and the effectiveness of the overload alarm developed by the overload test was verified. In particular, an overload test EMTP model based on EMTP-RV was developed, and simulation and measurement results obtained from the overload test were compared, and the reliability of overload performance verification results was confirmed.

• Journal of Korea Society of Industrial Information Systems
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• v.28 no.2
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• pp.11-19
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• 2023

In this paper, we propose the methods of invoice document structure recognition and of making a spreadsheet electronic document. The texts and block location information of word blocks are recognized by an optical character recognition engine through deep learning. The word blocks on the same row and same column are found through their coordinates. The document area is divided through arrangement information of the word blocks. The character recognition result is inputted in the spreadsheet based on the document structure. In simulation result, the item placement through the proposed method shows an average accuracy of 92.30%.

• Economic and Environmental Geology
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• v.54 no.2
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• pp.233-245
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• 2021

Many studies on the microstructures in rocks have been conducted using experimental methods with various equipment as well as natural rock studies to see the development of microstructures and understand their mechanisms. Grain boundary migration of mineral aggregates in rocks could cause grain growth or grain size changes during metamorphism or deformation as one of the main recrystallization mechanisms. This study suggests improved ways regarding the analog material experiments with reformed equipment to see sequential observations of these grain boundary migration. It can be more efficient than the existing techniques and carry out an appropriate microstructure analysis. This reformed equipment was implemented to enable optical manipulation by mounting polarizing plates capable of rotating operation on a stereoscopic microscope and a deformation rig capable of experimenting with analog materials. The equipment can automatically control the temperature and strain rate of the deformation rig by microcontrollers and programming and can take digital photomicrographs with constant time intervals during the experiment to observe any microstructure changes. The composite images synthesized using images by rotated polarizing plates enable us to see more accurate grain boundaries. As a rock analog material, norcamphor(C7H10O) was used, which has similar birefringence to quartz. Static grain growth and simple shear deformation experiments were performed using the norcamphor to verify the effectiveness of the equipment. The static grain growth experiments showed the characteristics of typical grain growth behavior. The number of grains decreases and the average grain size increases over time. These case experiments also showed a clear difference between the growth curves with three temperature conditions. The result of the simple shear deformation experiment under the medium temperature-low strain rate showed no significant change in the average grain size but presented the increased elongation of grain shapes in the direction of about 53° regarding the direction perpendicular to the shearing direction as the shear strain increases over time. These microstructures are interpreted as both the plastic deformation and the internal recovery process in grains are balanced by the deformation under the given experimental conditions. These experiments using the reformed equipment represent the ability to sequentially observe changing the microstructure during experiments as desired in the tests with the analog material during the entire process.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.5 no.3 s.11
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• pp.24-28
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• 2006

This paper proposed design and implementation of automation system that recognize device module boards automatically that are connected on main control board. The system of this paper is divided to main board and device module boards, and the main board is designed a board by slot structure. The slot structure is possible a extension for upgrade and addition of board ability. Besides, it is easier a establishment and disjointing because it recognizes automatically a device board. The proposed system in this paper compares with K10S1 PLC. The result shows an advantage of extensibility and ability, and it is reduced expense and period for development.

• Journal of Bio-Environment Control
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• v.5 no.2
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• pp.210-214
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• 1996

The measuring system was developed for automation of hydroponic culture. It runs in Windows 3.1 and 95. Main window contains greenhouse screen and menu bars such as system setting, sensor calibration, greenhouse status, actuator control, file management, view, and help. Users can use pop-up menu, tool bar and status bat as well as menu bar for manipulation. Especially it was designed to retain flexibility for researchers, who changed detecting sensors frequently. Users can change storage intervals of files, of which 3 types were prepared to use in other software like as statistical programs, graphic programs and/or spread sheets. This system was adopted to deep flow culture system and evaluated to be appropriate for any kind of hydroponic systems.

• Journal of the Society of Naval Architects of Korea
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• v.34 no.2
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• pp.85-89
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• 1997

The development of the algorithm and the computer aided marking data generation system based on it should precede the automation system for plate forming by line heating method. This paper places emphasis on the yard simulation for a real surface model to justify the algorithm and the computer aided marking data generation system which have been already developed. The yard simulation has been carried out according to the generated marking data and the heating condition produced by the developed computer aided system. The practical applicability of the developed computer aided system has been conformed by comparing the results of the computer simulation to the results of the yard simulation. This paper ends with the extension of the developed marking data generation system.