• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.542-544
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• 2012

조선기술의 발달과 해운업체의 요구로 선박이 점차 고속화 대형화됨에 따라 선박의 통항량은 매년 증가하고 있으며, 해양사고의 위험도 함께 높아지고 있다. 또한 최근 들어 어선이나 예선 등 소형선도 AIS(선박자동식별장치)를 설치하면서 관제대상 선박은 날이 갈수록 증가하는 추세이다. 따라서 선박이 항만으로 진입하기 이전 단계에 해양사고의 위험을 예방하기 위하여 항만관제의 범위가 확대되어야 한다는 필요성이 제기되고 있으며, 이로 인한 관제사의 업무량 및 스트레스도 증가하는 실정이다. 그러나 현재 사용중인 관제시스템은 모두 외국 제품으로 관제사의 다양한 요구사항을 반영하기에는 어려움이 있으며, 여러 기종이 혼재해 있어 VTS 간 연계도 불가능한 실정이다. 본 연구에서는 관제장비를 통합 연동하여 관제사의 업무량을 효과적으로 감소시키고 전국 VTS 및 관련 기관 업체와 상호 유기적으로 연계할 수 있는 맞춤형 관제지원시스템의 개발에 대한 필요성 및 개념, 주요기능, 활용방안 등을 모색하여 보았다.

• Spatial Information Research
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• v.14 no.3 s.38
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• pp.285-297
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• 2006

We aim to investigate the morphological and environmental characteristics of royal tombs of Chosun Dynasty by using GIS technique and remotely-sensed data. Most of the royal tombs are located on the banded gneiss and granite and over the south- and east. facing slopes and have altitudinal ranges of 150 to 200 meters. Due to the time gaps, exact locational preferences of the royal families can not be understood at this moment and also proximity to the running water is hard to be quantified. Close examination of Gwangneung indicates that the artificial modification and weathering have severe impacts on the slope and stone artefacts. The results from this research can be useful to preserve the valueless cultural heritages.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.772-773
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• 2023

클라우드 네이티브(Cloud Native) 환경인 쿠버네티스(Kubernetes)에서 컨테이너(Container)는 가볍고 배포 주기가 빠르기 때문에, 쿠버네티스에서 상태를 지속적으로 모니터링하는 시스템이 필요하다. 쿠버네티스는 파드(Pod)를 기본 단위로하여 다수의 컨테이너를 관리·감독한다. 쿠버네티스 모니터링을 위해 프로메테우스는 주기적으로 메트릭을 수집하며 많은 양의 정보를 빠르게 검색한다. 이를 활용하여 쿠버네티스를 모니터링 한다.

• Journal of the Korea Society for Simulation
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• v.28 no.2
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• pp.107-117
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• 2019

Because shipbuilding is single-product production with limited resources, production management technology is essential to manage the resources effectively and maximize the productivity of ship-process. Therefore, many shipbuilding companies are conducting research on ship production plan and process considering various constraints in the field by applying modeling and simulation. However, it is difficult to provide accurate production plan on sudden schedule and process changes, and to understand the interconnectivity between the processes that produce blocks in existing research. In addition, there are many differences between the production planning and field planning because detailed processes and quantity of blocks can not be considered. In this research, we propose the integrated process-based modeling method considering process-operation sequences, BOM(Bill of materials) and resource constraints of all the scheduled blocks in the indoor system. Through the integrated process-based model, it is easy for the user to grasp the assembly relationship, workspace and preliminary relationship of assembly process between the blocks in indoor system. Also, it is possible to obtain the overall production plan that maximizes resource efficiency without the separate simulation and resource modeling procedures because resource balancing that considers the amount of resource quantity shared in the indoor system is carried out.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.1
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• pp.1-7
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• 2012

It is necessary to construct the process automation system to improve the design efficiency and procure the higher design quality on the field of ship building. To construct this system, the shipbuilding companies should improve the 3D CAD/CAM system customized to the ship design and the software about design information management which could solve the conflict problem between the several related design division at the same time. The typical example is the Hole-plan process in the ship-building design. For the request of additional holes from outfitting division, the hull design division checks the compatibility conditions and reflects these holes to the hull panels if acceptable. if not, the requests are rejected and sent back to the outfitting division. These serial processes are not simple and require the tedious communication, discussion, and the complicated drawings. This article gives a basic introduction to the process of hole-plan system and proposes a strategy to automate its process.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.6
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• pp.299-310
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• 2022

The ability of an automated driving system is based on vehicle sensors, judgment and control algorithms, etc. The safety of automated driving system is highly related to the operational status of the road network and compliant road infrastructure. The safe operation of automated driving necessitates continuous monitoring to determine if the road and traffic conditions are suitable and safe. This paper presents a node and link system to build a road monitoring system by considering the ODD(Operational Design Domain) characteristics. Considering scalability, the design is based on the existing ITS standard node-link system, and a method for expressing the monitoring target as a node and a link is presented. We further present a technique to classify and manage hazard risk into five levels, and a method to utilize node and link information when searching for and controlling the optimal route. Furthermore, we introduce an example of system implementation based on the proposed node and link system for Sejong City.

• Journal of the Society of Naval Architects of Korea
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• v.51 no.2
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• pp.130-137
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• 2014

As one of the largest shipbuilding company in the world, STX Offshore & Shipbuilding currently developed an inventory managing system for steel-plates, which is applied to their steel stock yard. In a traditional way to manage steel yard, almost every work has been done by manually. The manual steel-plate piling process caused some problems such as process delay due to piling errors and the uncertainty of work plan due to lack of information. To solve these problems, we developed an integrated inventory managing system based on real-time crane tracking system which automatically updates steel-plates' piling status. We built the integrated steel-plate database, developed several programs including steel-plate input program, real-time steel-plate monitoring program and steel-yard management program, and constructed hardware system for tracking magnetic cranes. As a result, a supervisor of steel-yard can manage the inventory of steel-plates efficiently and furthermore plan an efficient piling schedule and crane working schedule.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.7
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• pp.949-955
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• 2018

Hardware-in-the-loop (HIL) simulation is a technique that can be employed for developing and testing complex real-time embedded systems. HIL simulation provides an effective platform for verifying power management system (PMS) performance of liquefied natural gas carriers, which are high value-added vessels such as offshore plants. However, HIL tests conducted by research institutes, including domestic shipyards, can be protracted. To address the said issue, this study proposes a field programmable gate array (FPGA) based PMS-HIL simulator that comprises a power supply, consumer, control console, and main switchboard. The proposed HIL simulation platform incorporated actual equipment data while conducting load sharing PMS tests. The proposed system was verified through symmetric, asymmetric, and fixed load sharing tests. The proposed system can thus potentially replace the standard factory acceptance tests. Furthermore, the proposed simulator can be helpful in developing additional systems for vessel automation and autonomous operation, including the development of energy management systems.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.553-556
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• 2014

최근 선박 전자 장비들이 디지털 인터페이스 표준을 위해 NMEA(National Marine Electronics Association)에서는 CAN Part B 표준 버스 프로토콜 기반의 네트워크 표준인 NMEA2000 표준을 개정하였다. NMEA2000는 네트워크상에서 PnP 기능을 가지는 멀티토커, 멀티리스너로서 네트워크 관리를 위한 서버가 필요 없는 멀티마스터의 실시간 제어 네트워크이다. 본 연구에서는 NMEA2000 기반의 선박 센서용 프로토콜 변환 알고리즘의 구현과 NMEA2000/CAN/Ethernet/RS422, RS485, RS232 포맷 변환 및 NMEA2000 기반 전용 케이블을 고려한 아날로그 데이터 모듈 외형 설계 및 개발을 목표로 한다. 본 연구를 통해 NMEA2000 핵심 기술의 개발과 적용을 통해 새로운 조선 IT 시장을 선점할 수 있을 것으로 기대된다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.1
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• pp.97-102
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• 2019

Disaster accidents at industrial sites have been increasing every year. In shipyards there are countless enclosed spaces causing issues like harmful-toxic gases stuck in those sealed areas. And due to such special and complicated structures of the working places with many layers of walls separating each other, there exist more issues of communication with workers trapped inside when accidents happen. Under this circumstance there must be a huge difficulty to evacuate or rescue the workers in case of any disaster. Therefore, in this paper, We would like to introduce the "integrated safety system" to more effectively deal with the problems and prevent such disasters in tough working environments. The suggested integrated safety system can prevent accidents in advance because it can control the data on the location of the workers in real time and the numerical values such as gas, oxygen, and carbon dioxide generated in the workplace in real time.