• Korean Journal of Construction Engineering and Management
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• v.21 no.1
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• pp.78-86
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• 2020

Dozer is an expensive construction equipment and has a significant performance impact on earthwork performance. A machine guidance system has been applied to dozer equipment as a solution that can improve the performance. The system can provide earthwork-related information to equipment operators so that earthworks can be carried out with minimum support from surveyors. Construction Equipment Machine guidance has the function of supporting earthwork according to an earthwork plan by providing excavation-related information to machine operators. The objective of this study is to evaluate the performance improvement of a machine guidance system for an dozer earthwork operation, and to compare the machine guidance method with the traditional method. The performance has been evaluated in two folds: 1) productivity and 2) accuracy. The productivity shows the quantity of earthwork for a given unit time. The accuracy shows the deviation of grading level from the designed level on the construction drawing for earthwork. The machine guidance system has been applied to a testing bed in a construction site. Data comparison analysis showed that the earth earthwork had 46.59% improvement in productivity as well as 46.96% improvement in accuracy, and is expected to provide a tool for applying smart constrction to the earthwork operation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.43-44
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• 2018

여객의 안전운항을 위해, 선내 센서데이터 수집장치를 설치하여 선박의 항해/기관 데이터를 수집하고, 수집된 데이터를 이용하여 긴급상황레벨 결정 및 위기대응 가이던스를 제공한다. 선박에서 수집된 데이터는 S-100 라이브러리를 통해 육상의 Marine Cloud로 전송하고, 육상시스템에서 판별한 위기대응 가이던스도 S-100 라이브러리를 통해 선박으로 전송하는 시스템을 구현하였다.

• Korean Journal of Construction Engineering and Management
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• v.25 no.2
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• pp.3-10
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• 2024

The purpose of this study is to analyze the effects of smart construction equipment applied at the construction site of the first smart city in the Korea and derive an application strategy for the utilization of smart construction equipment. To achieve this, aythors examined the practical effects and issues of safety systems and construction systems utilizing machine guidance (MG) technology, which is a representative smart construction equipment used in civil engineering construction sites. Both the MG safety system and MG construction system were found to be sufficiently effective in improving construction productivity. However, there are challenges that need to be addressed, such as the approval process for work results using MG systems, system changes due to frequent replacement of on-site equipment, and usability improvements for elderly on-site workers. The study presented some solutions that have been implemented on-site to address these issues. The utilization effects and issues presented in the study were analyzed through direct feedback from workers and managers who have utilized the MG technology on-site for a considerable period of time. These results can be used as preliminary data for the similar construction projects, considering the limited availability of empirical analysis data for equipment automation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2017.11a
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• pp.48-49
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• 2017

This study is about the development of emergency response guidance by safety index of seakeeping performance which is based on emergency response procedures in the ship through HAZID. These emergency response guidances will contribute to respond ship's abnormal conditions related to seakeeping performance effectively and efficiently to reduce marine accidents.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.170-172
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• 2019

최근 우리나라에서는 해양사고의 효과적인 예방을 위하여 구축 중인 한국형 e-Navigation SV20-선내시스템 원격모니터링 서비스에서는 복원성, 화재, 침수, 과도경사, 항해장비의 이상과 같이 선박의 안전 운항과 직접적으로 관련이 있는 선박의 센서들을 수집, 분석하여 이상 상태와 긴급상황을 자동으로 식별하여 안전운항을 지원하는 기능이 있다. IMO 선박안전관리 시스템의 경우 선원의 인적 과실에 의한 해상에서 안전 및 해양환경 보호를 위한 핵심 요소로서 우리나라는 SOLAS 협약 제9장(선박의 안전운항을 위한 관리)및 ISM CODE를 1999년 2월 해사안전법에 수용하여 2002. 7. 1.부터 단계적으로 시행하고 있다. 이 연구에서는 이 둘의 융합 개념의 기술적 결합을 통한 체계적이고 자동화적으로 선박에서의 안전관리 능력을 제고하여 안전 사고 발생을 최소화 할 수 있는 여러 가지 시스템과 더불어 사고 발생시 효율적으로 대응할 수 있는 표준 토폴로지 기반 UI 및 항차 기반 위기대응 가이던스를 개발 하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.158-161
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• 2019

한국형 e-Navigation의 선내시스템원격모니터링시스템(SV20)은 선박의 이상 상태와 긴급 상황을 자동으로 감지하고 위기상황을 신속히 극복하는데 필요한 위기대응 가이던스를 제공하는 것을 목적으로 개발된 시스템이다. 선내시스템에서는 육상의 기상정보와 선박의 실시간 해상정보 등을 바탕으로 선박의 실시간 복원성 정보를 제공하고, 항해 주요장비의 상태정보와 화제정보를 알람과 가이던스로 제공된다. 이들 선박에 설치된 선내시스템 정보는 LTE-M 통신기반의 MCP를 통해 전송되어 육상의 선박모니터링시스템에 동기화 되어 표출된다. 본 연구에서는 선내시스템 원격모니터링 시스템의 표준화 모델과 적용사례 및 연구개발 현황을 소개하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.36-37
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• 2018

This study is about the development of emergency response guidance according to the fire safety index in the fire safety module, which is one of the on-board remote monitoring system. In this paper divided the zones based on the location of the fire sensor for passenger ship which is one of the service passenger ships and developed on the emergency response guidance by the identified zones.

• Journal of Advanced Marine Engineering and Technology
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• v.29 no.1
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• pp.124-131
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• 2005

This paper suggests LOS(Line-Of-Sight) guidance system of a surface vessel in straight-line navigation under ocean currents An LOS vector from the vessel to a point on the path between two way-points is decided and a heading angle is calculated to converge to follow the desired path based on the LOS vector This guidance system is called LOS guidance system. The suggested LOS guidance law has parameters to be properly chosen according to navigational environment. Parameters of LOS guidance system are optimized to reduce propulsive energy and/or position error between desired Position and present position of a ship using genetic algorithm which is a strong optimization algorithm with adaptational random search The effectiveness of the suggested LOS guidance system is assured through computer simulations.

• Journal of Drive and Control
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• v.13 no.4
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• pp.102-107
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• 2016

• Information and Communications Magazine
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• v.26 no.8
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• pp.14-18
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• 2009

u-헬스케어 분야의 한 부분을 차지하는 u-피트니스 시스템은 IT/BT기술이 이용된 대표적인 분야중 하나이다. 이 분야에 상용화된 몇 가지 u-피트니스 시스템의 제품을 소개하고, 사용된 기술의 동작 방법을 구현된 고령자 운동 가이던스 시스템을 예를 들어 설명함으로서 이 분야 연구에 더욱 발전을 기대해보며 연구 방향에 대해 전망해 보고자 한다.