• KEPCO Journal on Electric Power and Energy
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• 제2권2호
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• pp.269-272
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• 2016

Distribution management system or microgrid energy management system plays an important role in monitoring, operation and control of electrical distribution systems by utilizing IT infrastructure. Nowadays, the rapid increase of the distributed resources makes the conventional management system have some additional functionality for the reliable operation due to intermittent renewables and the efficient operation on the economical purpose. In this paper, the brief standard software functional requirements of microgrid energy management system are provided through survey of the recent commercial products of the major vendors, and furthermore the architectures of microgrid energy management system are provided in comparison with major suppliers' microgrid energy management system. The summary of investigation will be able to make the developers and researchers focus on the specific functionality in the real world.

• 제어로봇시스템학회논문지
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• 제15권4호
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• pp.406-412
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• 2009

ECG is used on purpose to keep good health or monitor cardiac function of aged person as well as on purpose to diagnose the disease of heart patients. The ambulatory ECG monitoring system under guarantee of safety and accuracy is very efficient to prevent the progress of heart disease and sudden death. These systems can detect the temporary change of ECG that is very significant to diagnose heart disease such as myocardial ischemia, arrhyamia and cardiac infarction. In this paper, we describe the ECG signal analysis algorithm and measurement device for ECG monitoring. The authors designed a small-size portable ECG device that consisted of instrumentation amplifier, micro-controller, filter and RF module. The device measures ECG with four electrodes on the body and detects QRS complex and ST level change in realtime. Also it transmits the measured signals to the personal computer. The developed software for ECG analysis in personal computer has the function to detect the feature points and ST level changes.

• 한국콘텐츠학회논문지
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• 제6권11호
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• pp.285-294
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• 2006

본 논문에서는 웹 서비스 기술을 적용한 새로운 URC 로봇 원격 제어 및 모니터링 기법을 제안한다. URC 로봇은 유비쿼터스 환경에서 외부 세계와의 다양한 인터페이스를 지원하기 위하여 이 기종 하드웨어 및 소프트웨어 플랫폼에 두루 적용될 수 있는 구조가 요구된다. 본 논문에서 웹 서비스 기술을 임베디드 환경에 최적화하고, 외부 응용 에이전트들과 상호 작용을 지원 할 수 있는 웹 서비스 기반의 로봇 원격 제어 방법을 설계 및 구현한다. 본 연구의 결과는 시뮬레이션을 거쳐 URC 로봇인 NETTORO에 탑재 및 운용하여 실용적 가치를 검증하였다.

• Smart Structures and Systems
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• 제13권6호
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• pp.1065-1094
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• 2014

Civil engineers always face the challenge of uncertainty in planning, building, and maintaining infrastructure. These works rely heavily on a variety of surveying and monitoring techniques. Unmanned aerial vehicles (UAVs) are an effective approach to obtain information from an additional view, and potentially bring significant benefits to civil engineering. This paper gives an overview of the state of UAV developments and their possible applications in civil engineering. The paper begins with an introduction to UAV hardware, software, and control methodologies. It also reviews the latest developments in technologies related to UAVs, such as control theories, navigation methods, and image processing. Finally, the paper concludes with a summary of the potential applications of UAV to seismic risk assessment, transportation, disaster response, construction management, surveying and mapping, and flood monitoring and assessment.

• 한국멀티미디어학회논문지
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• 제7권10호
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• pp.1412-1420
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• 2004

본 논문에서는 클라이언트/서버 형태로 신발 공정에 관한 컨베이어 원격 감시 제어 시스템을 웹 기반으로 설계하고 구성하였다. 클라이언트가 원격으로 영상을 감시하고 제어하기 위한 모듈들은 JAVA를 기반으로 제작하였으며, 실시간 제어를 위한 컨베이어 서버는 RTLinux를 기반으로 구성되며, 그 위에서 디바이스 드라이버와API를 개발하였다. 이러한 소프트웨어 제작과 Lego 기반의 프로토타이핑을 통해 산업 현장에서, 3차원 스테레오 카메라와 웹을 통해 실시간으로 컨베이어를 제어하는 방법을 제시하고자 한다.

• Journal of Computing Science and Engineering
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• 제10권3호
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• pp.75-84
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• 2016

Medical cyber-physical systems (MCPS) integrate sensors, actuators, and software to improve patient safety and quality of healthcare. These systems introduce major challenges to safety analysis because the patient's physiology is complex, nonlinear, unobservable, and uncertain. To cope with the challenge that unidentified physiological parameters may exhibit short-term variances in certain clinical scenarios, we propose a novel run-time predictive safety monitoring technique that leverages a maximal model coupled with online training of a computational virtual subject (CVS) set. The proposed monitor predicts safety-critical events at run-time using only clinically available measurements. We apply the technique to a surgical glucose control case study. Evaluation on retrospective real clinical data shows that the algorithm achieves 96% sensitivity with a low average false alarm rate of 0.5 false alarm per surgery.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.91.4-91
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• 2002

Today, Internal offers WWW(World Wide Web), remote control, file transfer and e-mail service. Among the services, WWW takes large portion because of convenient GUI, easy information search and unlimited information registration. WWW service gives the comfort in life such as goods purchase, information search, real-time news, internet TV and medical diagnosis. Remote Monitoring Server(RMS) Ssystem that uses internet and WWW is constructed for chip mounter. Hardware base consists of RMS, chip mounter and C/S(Customer Service) service. Software includes DBMS and various modules in server home page. Web browser provide product num her, bad product number, troubl...

• 한국산학기술학회논문지
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• 제10권1호
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• pp.140-145
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• 2009

최근 컴퓨터 네트워킹 기술을 텔레미터/텔레컨트럴 시스템에 적용하여 고성능의 스마트 제어기능을 제공하려는 연구가 활발하게 진행되고 있다. 본 논문은 온실 모델에 다양한 적용을 위하여 특별히 설계된 리모트 및 로칼 제어 소프트웨어를 갖는 클라이언트/서버 구조를 제안한다. 서버 장치는 센서나 액튜에이터에 관련되는 각종 데이터를 수집, 집적하고 고품질의 원격 I/O 제어동작을 유지하기 위하여 데이터베이스에 저장한다 이에 대해 클라이언트 장치는 인터넷 웹브라우저 상에서 제어 판넬과 같이 간단히 동작한다. 구현된 장치는 멀티미디어 정보가 포함된 온실의 감시 및 제어상태 모두를 대 화형으로 원활하게 통신하였다. 본 연구에서는 패킷 크기에 의해 영향 받는 종합적인 스루풋과 전송시간에 관계되는 성능 증대의 한계도 분석하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.215-216
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• 2007

This paper presents a real-time scheduler for nuclear safety system. According to constraints and requirements of nuclear safety system, scheduler design analysis is done and algorithms are developed for implementation. Using DSP based hardware, a real-time scheduler is realized. Consequently, this paper shows the performance of periodical software through the monitoring program.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.338-342
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• 2003

Hybrid machine is based on hardware technologies of machine tool and software technologies of open architecture controller. In machining technology, combination technology of turning, milling, and grinding and in machining energy technology. combination of mechanical, electrical, and chemical technology are developed. This paper describes hybrid machine technology for combination of machining, on-machine measurement, on-machine CAM, and on-machine remote monitoring and control in open architecture controller environment. For on-machine measurement, non-contact measurement technology based on CAD information is developed. For on-machine CAM, interactive CAM program for automatic NC program generation and tool path simulation is developed. For generation on-machine remote monitoring and control, suitable interface method between web program and CNC is proposed. The developed hybrid machine technology is implemented in 3 axes milling machine for evaluation of operablity.