• 로봇학회논문지
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• 제13권3호
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• pp.182-189
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• 2018

The purpose of this paper is to suggest the methodology for the establishment of operational concept for speed-up of defense robot and improvement direction of the defense acquisition system for the defense robot. In order to achieve this goal, the current defense acquisition system was analyzed into long-term planning, mid-term programming, and project execution stages. And I suggest the methodology for the establishment of operational concept for speed-up of defense robot and direction of development of the defense robot acquisition system considering the characteristics of the robot in terms of core technologies of robot, robot ecosystem and effectiveness-based-robot-design, respectively. Based on the methodology for establishment of the operational concept of defense robot and development direction of the defense acquisition system presented in this study, it will be possible to design efficiently the defense robot in the future.

• 정보관리학회지
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• 제37권4호
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• pp.61-80
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• 2020

이 연구는 도서관에서 도입 및 운영 중인 로봇에 대한 분석을 통해 다양한 활용 방안과 기능 개선 방안을 제안하고자 하였으며, 이를 위하여 먼저 국내외 16개 도서관이 운영 중인 로봇의 종류, 기능에 대해서 살펴보았다. 대부분 사서보조업무(장서점검, 자료이송 등)와 이용자 서비스업무(도서관 안내, 자료검색 보조 등)에 활용되고 있었다. 그리고 국립중앙도서관이 도입한 로봇의 특징과 기능적 한계를 살펴보았다. 이러한 결과를 종합하여, 1) 로봇의 추가기능 개발 필요성, 2) 방역 및 안전관리 로봇 도입 필요성, 3) 국가차원의 로봇 확산정책의 필요성, 4) 로봇생태계 구축의 필요성을 제안하였다.

• 한국지능시스템학회논문지
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• 제25권4호
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• pp.342-348
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• 2015

최근에는 자연재해 및 무단투기 등으로 인해서 해양으로 많은 양의 폐기물이 유입되고 있으며 그 영향으로 해양생태계가 파괴되고 미관이 훼손되는 등 해양환경이 오염되고 있다. 해양에 존재하는 폐기물 수거를 위해 여러 방법을 사용하고 있는데, 주로 수거되는 폐기물의 형태는 부유물이다. 부유물을 수거하기 위해 주로 그물을 사용하며 최근에는 선박으로 수거를 실시하고 있다. 하지만, 선박 수거에 있어서 인력 및 기술 부족으로 많은 어려움이 발생하고 있다. 이 문제를 해결하기 위해서 부유물 수거용 수상로봇이 개발되었다. 개발된 로봇의 성능 검증을 위해서 Surge, Yaw, 부유물수거 등의 시험평가가 수행되었다. 시험평가 결과는 실제 적용 가능성 및 추가적인 연구의 필요성을 보여준다.

• 한국해양공학회지
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• 제26권6호
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• pp.39-45
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• 2012

Underwater robots are generally used for the construction of seabed structures, deep-sea ecosystem research, ocean energy development, etc. A ducted marine propulsor is widely used for the thruster of an underwater robot because of its collision protection, efficiency increase, cavitation reduction, etc. However, the flow of a ducted propeller is very complex because it involves strong flow interactions between the blade impeller and duct. The present work aimed to design a ducted propeller using 2-D strip theory and CFD analysis. The hydrodynamic forces (i.e. and ) were computed to set the local angle of attack in a spanwise direction of the propeller blade. After the propeller design, performance coefficients such as the thrust, torque, and efficiency were computed to check whether the designed performance was achieved. To validate the present analysis, the thrust was compared with experimental data and good agreement was obtained.

• International Journal of Internet, Broadcasting and Communication
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• 제13권4호
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• pp.112-120
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• 2021

Recently, the number of consumers using digital online distribution platforms is increasing. This caused the rapid growth of the e-commerce market and increased delivery volume in urban areas. The logistics system, designed ar006Fund the city center to handle the delivery volume, operates a delivery system from the outskirts of the city to the urban area using cargo trucks. This maintains an ecosystem of high-cost and inefficient structures that increase social costs such as road traffic congestion and environmental problems. To solve this problem, research is being conducted worldwide to establish a high-efficiency urban joint logistics system using urban railway facilities and underground space infrastructure existing in existing cities. The joint logistics system begins with linking unmanned delivery automation services that link terminal delivery such as cargo classification and stacking, infrastructure construction that performs cargo transfer function by separating from passengers such as using cargo platform. To this end, it is necessary to apply the device to the vertical and horizontal transportation machine supporting the vertical transfer in the flat space of the joint logistics terminal, which is the base technology for transporting cargo using the transfer robot to the destination designated as a freight-only urban railway vehicle. Therefore, this paper aims to derive holistic viewpoints needs for design requirements for vertical and vertical transportation machines and freight transportation standard containers, which are underground railway logistics transport devices to be constructed by urban logistics ecosystem changes.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2006년 창립20주년기념 정기학술대회 및 국제워크샵
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• pp.335-338
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• 2006

The more deeply the researches make progress in ocean researches including the seabed resource investigation or the oceanic ecosystem investigation, the more important the role of UUV gets. In case of study on the deep sea, there are difficulties in telecommunications between AUV and ships, and in data communication and recharging. Therefore, docking is required. In AUV docking system, the AUV should identify the position of docking and make contact with a certain point of docking device. MOERI (Maritime & Ocean Engineering Research Institute), KORDI has conducted the docking testing on AUV ISIMI in KORDI Ocean Engineering Water Tank. As AUV ISIMI approachs the docking device, it is presented that attitude is unstable, because the lights Which is on Image Frame are disappeared. So we fix the rudder and stem, if the lights on Image Frame are reaching the specific area in the Image Frame. In this paper, we intend to solve the problems that were found in the testing, which, first, will be identified via simulation.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.85-94
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• 2022

Recently, consumers who prefer contactless consumption are increasing due to pandemic trends such as Corona 19. This is the driving force for developing the last mile-based logistics ecosystem centered on the online e-commerce market. Lastmile led to the continued development of the logistics industry, but increased the amount of cargo in urban area, and caused social problems such as overcrowding of logistics. The courier service in the logistics base area utilizes the process of visiting the delivery site directly because the courier must precede the loading work of the cargo in the truck for the delivery of the ordered product. Currently, it's carried out as automated logistics equipment such as conveyor belt in unloading or classification stage, but the automation system isn't applied, so the work efficiency is decreasing and the intensity of the courier worker's labor is increased. In particular, small-scale courier workers belonging to the sub-terminal unload at night at underdeveloped facilities outside the city center. Therefore, the productivity of the work is lowered and the risk of safety accidents is exposed, so robot-based loading technology is needed. In this paper, we have derived the top-level concept and requirements of robot-based loading system to increase the flexibility of logistics processing and to ensure the safety of courier drivers. We defined algorithms and motion concepts to increase the cargo loading efficiency of logistics sub-terminals through the requirements of end effector technology, which is important among concepts. Finally, the control technique was proposed to determine and position the load for design input development of the automatic conveyor system.

• International journal of advanced smart convergence
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• 제9권4호
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• pp.173-178
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• 2020

As the fourth industrial revolution, in which people, objects, and information are connected as one, various fields such as smart energy, smart cities, artificial intelligence, the Internet of Things, unmanned cars, and robot industries are becoming the mainstream, drawing attention to big data. Among them, Smart Grid is a technology that maximizes energy efficiency by converging information and communication technologies into the power grid to establish a smart grid that can know electricity usage, supply volume, and power line conditions. Smart meters are equient that monitors and communicates power usage. We start with the goal of building a virtual smart grid and constructing a virtual environment in which real-time data is generated to accommodate large volumes of data that are small in capacity but regularly generated. A major role is given in creating a software/hardware architecture deployment environment suitable for the system for test operations. It is necessary to identify the advantages and disadvantages of the software according to the characteristics of the collected data and select sub-projects suitable for the purpose. The collected data was collected/loaded/processed/analyzed by the Hadoop ecosystem-based big data platform, and used to predict power demand through deep learning.

• 로봇학회논문지
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• 제8권1호
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• pp.51-57
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• 2013

Recently, the number of jellyfish has been rapidly grown because of the global warming, the increase of marine structures, pollution, and etc. The increased jellyfish is a threat to the marine ecosystem and induces a huge damage to fishery industries, seaside power plants, and beach industries. To overcome this problem, a manual jellyfish dissecting device and pump system for jellyfish removal have been developed by researchers. However, the systems need too many human operators and their benefit to cost is not so good. Thus, in this paper, the design, implementation, and experiments of autonomous jellyfish removal robot system, named JEROS, have been presented. The JEROS consists of an unmanned surface vehicle (USV), a device for jellyfish removal, an electrical control system, an autonomous navigation system, and a vision-based jellyfish detection system. The USV was designed as a twin hull-type ship, and a jellyfish removal device consists of a net for gathering jellyfish and a blades-equipped propeller for dissecting jellyfish. The autonomous navigation system starts by generating an efficient path for jellyfish removal when the location of jellyfish is received from a remote server or recognized by a vision system. The location of JEROS is estimated by IMU (Inertial Measurement Unit) and GPS, and jellyfish is eliminated while tracking the path. The performance of the vision-based jellyfish recognition, navigation, and jellyfish removal was demonstrated through field tests in the Masan and Jindong harbors in the southern coast of Korea.

• 한국융합학회논문지
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• 제13권4호
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• pp.513-519
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• 2022

우리는 4차 산업혁명이라는 편리한 시대에 살고 있으며, 새로운 기술의 발전으로 인해 풍요로운 생활을 하고 있다. 4차 산업혁명은 로봇기술, 생명과학, 인공지능이 주도하는 차세대 산업혁명으로, 스포츠도 융복합 연구의 필요성이 제기되면서 스포츠의 학문적 기초를 위한 노력들이 계속되고 있다. 최근에는 코로나19로 인한 홈트레이닝이 주목받고 있는데, 그 중 필라테스는 인기가 높으며 그와 동시에 관련 용품들의 수요도 급증했다. 이는 코로나19가 스포츠산업 생태계에 영향력을 주었음을 단적으로 보여주고 있다. 따라서 본 연구에서는 필라테스의 정확한 특허 정보를 통해 현재의 동향을 파악하고 향후 스포츠 융복합 산업과 스포츠 지식재산 관련 연구의 기초자료로 사용하는데 그 목적이 있다. 연구 방법은 특허청 특허정보 검색서비스인 키프리스(KIPRIS, www.kipris.or.kr)에서 제공하는 자료를 활용하여 2010년 1월 1일부터 2021년 12월 31일까지의 자료를 통해 특허 상태분석, 국제특허분류(IPC) 특허분석, 분류별 세부 특허분석을 실시하였다.