• Journal of Institute of Control, Robotics and Systems
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• v.10 no.2
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• pp.197-203
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• 2004

A real-time network in a distributed control system plays an important role for the reliable data transmission. Compared to the field-buses used in the past, TCP/IP protocol on the top of Ethered provides a compatibility between applications as well as an economical method to develop softwares. This paper proposes a modified TCP/IP structure for IEEE-1394 network, with which asynchronous and isochronous data transmission is selectively used for the real-time data transmission in a distributed control system. This paper also shows the performance of the proposed protocol by experiments.

• Proceedings of the KIEE Conference
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• 2008.10b
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• pp.491-492
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• 2008

무선통신 기술과 모바일 장비의 발전에 따라 의사는 언제, 어디서나 환자의 상태를 실시간으로 모니터링 할 수 있게 되었다. 이 연구에서는 원격지 PC에서 인코딩한 환자의 비디오 영상을 무선통신으로 전송한다.[1] 이때, 모바일 장비(PDA)는 PC에서 보낸 비디오 영상을 전송 받고, 디코딩하여 화면에 출력한다. 이번 논문에서 개발한 시스템은 후자에 기술된 모바일 실시간 비디오 모니터링 시스템이다. 개발에 사용된 비디오 코덱은 MPEG-4 계열의 오픈소스 코덱인 Xvid이다. 데스탑 PC용 Xvid 오픈소스를 모바일 디바이스에서 사용할 수 있도록 컨버전하여 사용하였다. 무선 통신망은 WiBro를 사용하여 고화질 비디오를 전송받을 수 있는 대역폭을 확보였다. 이 논문 목적은 의사가 PC앞에 앉아 있지 않아도 이동간에 환자의 현재 상태를 실시간으로 확인할 수 있음으로서 의사의 작업효율을 증진시키는데 있다.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.515-518
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• 2003

Mathematical models can be used to evaluate the effects of operational alternatives of dam on the downstream aquatic environment. An unsteady, one-dimensional water quality model, CE-QUAL-RIVI was calibrated and validated in Geum river as a sub model for the realtime water management system in the basin. The main usage of the model within the system is to predict the effects of flow regulation by Daecheong Dam on the downstream water quality. The validated model was then used to simulate dynamic water quality changes at several key stations responding to different scenarios of reservoir releases under a hypothetical spill condition. The model showed fairly good performance in the simulation of hydrodynamic and mass transport processes under highly unsteady conditions.

• Journal of Biomedical Engineering Research
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• v.14 no.4
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• pp.371-378
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• 1993

A new recognition algorithm which decides thge opening & the closing states of subject's eye and isn't affected by the subject's background is proposed. And it is tested in circumstances in which subject's motions are not restricted using the developed system. AERS (Automatic Eye opening & closing Recognition System) . The significant characteristic of the AERS is that it dosen't need any extra hardware except a formal CCD carmera and an image grabber but it works so well and so fast. The AFRS wcould be particularly well suited to a tray of communications of patients in a hospital, who can not communicate othertvise.

• Proceedings of the KIEE Conference
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• 2006.10c
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• pp.366-368
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• 2006

Electronic warfare Support(ES) system measures pulse characteristics for received RF signals that received from all directions. ES system discriminates the pulse trains that have a rule, correlationship, continuance from collected data and analyze the characteristics of the data, and identify the emitters by comparison with emitter identification data(EID). Because pulse density is very high and various signal source exists at modem signal environments, high-speed and accurate signal analysis is needed for realtime countermeasure to emitters. Grouping alleviates the load of signal analysis process and supports reliable analysis. In this paper, we suggest an adaptive clustering scheme regarding signal patterns.

• Journal of Institute of Control, Robotics and Systems
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• v.13 no.4
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• pp.286-295
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• 2007

This paper presents an intelligent PID control for stochastic systems with nonstationary nature. We optimally determine parameters of a PID controller through learning algorithm and propose an online PID control to compensate system errors possibly occurred in realtime implementations. A dynamic Bayesian network (DBN) model for system errors is additionally explored for making decision about whether an online control is carried out or not in practice. We apply our control approach to traffic control of Transmission Control Protocol (TCP) networks and demonstrate its superior performance comparing to a fixed PID from computer simulations.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.317-318
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• 2013

최근에 발생한 3.20 사이버테러와 6.25 사이버테러와 같이 특정 방송사와 금융권 전산망을 마비시키고 임직원 시스템을 망가뜨려 못쓰게 만드는 피해 유형이 발생되고 있다. 이런 사이버 공격에 사용되는 악성코드에 대해서 탐지에서 분석 그리고 검증 단계를 통합적으로 모니터링하고 필터를 통해 악성코드를 추출하고 차단하는 시스템 개발이 필요하다. 본 논문에서는 실시간으로 악성코드를 탐지하는 엔진들의 분석 및 검증 현황을 확인하고 실시간 통계 모듈에서 수집한 자료들을 바탕으로 향후 보안 정책 방향 및 미래 예측을 계획할 수 있는 실시간 악성코드 분석 통합 관리 시스템을 제안한다.

• Journal of Electrochemical Science and Technology
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• v.3 no.4
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• pp.154-158
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• 2012

It is generally known that electrochemical impedance spectroscopy is a powerful technique and its real-time application has been demanded for prompt observations on instantaneous electrochemical changes. Nevertheless, long measurement time and laborious analysis procedures have hindered development of it. Solving the problems, here I report of a new algorithm design for development of a real-time electrochemical impedance monitoring system, which potentially provides a guideline in developing monitoring systems of electric vehicles batteries and other electrochemical power plants. The significant progress in this report is employment of the parallel processing protocol which connects independent sub functions to successfully operate with avoiding mutual interruptions. Therefore, all the processes required to monitor electrochemical impedance changes in realtime are properly operated. To realize the conceptual scheme, a Labview program was coded with sub functions units which conduct their processes individually and only data are transferred between them through the parallel pipelines. Finally, measured impedance spectra and analysis results are displayed, which are synchronized according to the time of change.

• Proceedings of the IEEK Conference
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• 2009.05a
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• pp.73-75
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• 2009

The smart grid which is called the future power system should satisfy the customers who want various choices and realtime energy price. The two-way information exchange platform for energy customers provides the infrastructure to transform today's ESP(Energy Service Provider)-centered power system operation into customer-oriented operation. It enables ESPs to provide their customers with a variety of services by communicating with various appliances in customer's premises. In this paper, the portal-based platform model for the two-way information exchange and its implementation are described.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.178.2-178
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• 2001

Today, many electronic devices and ECUs (Electronic Control Units) are used in the automotive body control systems. It becomes more common that these devices exchange data with others through an in-vehicle network. Automobile manufacturers concentrate their efforts on development of body control systems based on networks in order to save cost and to increase flexibility and safety. OSEK/VDX has been founded as a joint project in German and French automotive industry aiming at an industry standard for an open-ended architecture for distributed control units in vehicles OSEK/VDX consists of Communication (specification of data exchange within and between control units), Network Management specification of Configuration determination and monitoring and Operating System (specification of realtime executive for ECU software ...