• 한국정보처리학회논문지
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• 제7권5호
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• pp.1553-1558
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• 2000

The development of recent computer and communication technology has changed Automation System using communication network, and the new USB substituted with Serial Communication is already developed and now popular. In this paper, High speed data transfer system design using USB interface and communication application simulated for the situation is introduced. Base on USB, we can use additive function efficiently coped with former field device. The 'Winsock Connection USB Ternimal,' designed for hardware simulation, control the field device connected by USB, and provide the way for remote control of field device by Telnet connection through TCP/IP. That theorem can guarantee controlling direct input dta of user, and acuate function of field device using USB Packet Transmission. As a result of amy research, this communication application system identified good operation of field device with those of former field device. Another result of the experiment of hardware operation, we obtained accomplishment that the sufficient bandwidth guarantee of USB has high speed and high performance, and reduce the occupancy of system.

• Journal of Information Processing Systems
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• 제13권6호
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• pp.1459-1466
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• 2017

Recently, the development of the smart home field provides a range of services to install and keep the smart home appliance in a user's residential environment pleasantly. However, the conventional system method is not convenient enough to use properly because users have to select a device and manually operate the device on their own. In this paper, we propose a system to set the priority of the devices selected by the user and proceed with the task. When a user selects a device, the system recommends an optimal device associated with the device. The system compares and sets the priority of each device, carrying out the task one by one according to the set priority. Therefore, the proposed system is expected to provide users with increased convenience and more efficient task management.

• 한국정보전자통신기술학회논문지
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• 제11권2호
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• pp.129-136
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• 2018

전 세계적으로 국제 표준인 IEC 61850 통신규약을 사용하고 있고 국내에서도 2007년도부터 시험 적용과 연구개발을 통해 2013년부터 신규 건설되는 변전소는 IEC 61850 기반의 디지털변전소로 준공되어 지고 있다. 국내 대기업을 중심으로 디지털 변전소 운영시스템 개발을 위한 연구가 진행되어 LCP용 IED 전력응용기기를 개발하였으나, 기존 변전소에 설치되어 운전 중인 구형의 현장기기와 신형인 디지털 변전소 운영시스템에 사용되는 현장기기를 모두 수용할 수 있는 시스템 분야의 연구는 아직 미흡한 실정이다. 본 논문에서는 제안된 현장정보처리반을 IEC 61850 기반으로 구성할 수 있는 48VDC 입력모듈과 125VDC 출력모듈을 구현하고 패킷 분석 툴인 IEC 61850 클라이언트 인증 프로그램과 Wireshark를 사용하여 상태감시, 제어조작시험을 실시하여 현장 적용 가능성을 검증하였다.

• 정보통신설비학회논문지
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• 제11권2호
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• pp.52-57
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• 2012

In this paper describe configuration about QCM system for image processing device. It presents that QCM's image processing board video from the camera recognized by the PLC's battery removable exact location coordinates to the robot image processing technology to deliver. In addition, QCM video image processing technology for improved data reliability is described. In this paper define the landmarks of battery for obtaining the location coordinates and verify battery the location coordinates acquisition process from field tests of the QCM/QTPE-BUS Battery Exchange System.

• 한국통신학회논문지
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• 제30권10B호
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• pp.660-668
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• 2005

최근에는 인터넷 기반의 통신 방식이 원격 제어와 데이터 수집 분야에서도 널리 채택되어지고 있다. 현재의 인터넷에서 대부분의 네트워크 애플리케이션들은 Client-Sever 모델로 개발되고 있다. 본 논문에서는 인터넷상에서 Client와 Server의 역할을 교환하여, 다양한 산업용 디바이스를 위해 단일화된 디바이스 인터페이스를 제공해 주는 DCP(Device Configuration Protocol) 프로토콜을 제안한다. 제안된 프로토콜은 TCP/IP 표준 프로토콜 상에서 돌아가는 응용 계층 프로토콜로 동작한다. 또한 DCP 프로토콜을 확장하여 실시간 처리 기능을 추가하고, IPv6의 QoS(Quality of Service) 지원기능인 FlowLabel과 연동하여 실시간 처리가 사용자 수준에서 가능하도록 하였다. 시뮬레이션 수행 결과 실시간 처리가 요구되는 패킷과 일반적인 패킷을 비교하였을 때, 지연시간 측면에서 보면 실시간 처리가 요구되는 패킷은 처리율과 무관하게 마감 시간 전에 처리됨을 알 수 있다.

• 한국컴퓨터정보학회논문지
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• 제27권12호
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• pp.231-238
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• 2022

무선 통신의 발전과 IoT 센서의 발전으로 인해 휴대용 모바일 통신 장치와 센서 간의 근거리 무선 통신 기술들이 개발되어 다양한 응용서비스를 제공하는 고부가가치의 플랫폼으로 발전하고 있다. 본 논문에서는 비콘, 블루투스, UWB(Ultra-wideband), ZigBee, NFC(Near Field Communication), Z-Wave, 6LoWPAN(IPv6 over Low power WPAN), D2D(Device to Device) 등과 같은 근거리 무선 통신 기술 중에서, 실내 위치 측위를 제공할 수 있는 비콘을 기반으로 IoT 서비스 플랫폼을 제안하였다. 그리고 무분별한 비콘 스팸 신호를 차단하고 유연성과 확장성을 가진 REST 웹 서비스 기술을 적용하여 비콘 연동 웹서버를 설계하였다. 데이터 전송 성공률, 비콘 Push 차단 성공률, 위치 측위 정확도, IoT 연동 처리 성공률, REST 웹 서비스 기반 데이터 처리 성공률 등을 테스트하여 다른 기종 간의 데이터 접근성을 검증하였다. 설계된 IoT 서비스 플랫폼을 통해 향후 근거리 무선 통신 기반의 비즈니스 모델과 서비스 플랫폼에 대한 다양한 제안과 연구가 진행될 것이다.

• IEIE Transactions on Smart Processing and Computing
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• 제5권6호
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• pp.440-444
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• 2016

In this paper, an equivalent circuit model for near-field noise emission is proposed to implement a multimedia operation-monitoring system for mobile devices. The proposed model includes a magnetic field probe that captures noise emissions from multimedia components, and a transfer function for near-field noise coupling from a transmission line source to a magnetic field probe. The proposed model was empirically verified with transfer function measurements of near-field noise emissions from 10 kHz to 500 MHz. With the proposed model, a magnetic field probe was optimally designed for noise measurement on a camera module and an audio codec in a mobile device. It was demonstrated that the probe successfully captured the near-field noise emissions, depending on the operating conditions of the multimedia components, with enhanced sensitivity from a conventional reference probe.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.1465-1467
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• 2004

Compared with other transport means, safety and timeliness are the merits of railways. Unexpectedly when accident happens, much time and human strength are required to cope with the accident. And for swift recovery, systematic rehabilitation is needed. Recently using MTS(Moving picture Transmission System), we can perform accident rehabilitation and recording work efficiently. MTS is the device that transmits continuous picture information from accident field to control center. e are developing the appropriate system to railway situation to make use of the existing information communication technology, processing technology of video-tex, super high speed transmission technology through fiber-optic, copper cable and network description of information Technology, etc. If these communication-based can technologies are applied to railway system, railway managers can control the accident by inspecting the picture of accident field and can contribute to the safe train operation and the improvement of railway management. In this paper, we investigate the connecting methods when optical fiber is used for moving picture data transmission of train accidents, and its problems. And, we validate MTS's performance through about 28km section of field test.

• 한국BIM학회 논문집
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• 제10권1호
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• pp.1-8
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• 2020

In managing building facilities, spatial information is the basic data for decision making. However, the method of acquiring spatial information is not easy. In many cases, the site and drawings are often different due to changes in facilities and time after construction. In this case, the site data should be scanned to obtain spatial information. The scan data actually contains spatial information, which is a great help in making space related decisions. However, to obtain scan data, an expensive LiDAR (Light Detection and Ranging) device must be purchased, and special software for processing data obtained from the device must be available.Recently, SLAM (Simultaneous localization and mapping), an advanced map generation technology, has been spreading in the field of robotics. Using SLAM, 3D spatial information can be obtained quickly in real time without a separate matching process. This study develops and tests whether SLAM technology can be used to obtain spatial information for facility management. This draws considerations for developing a SLAM device for real-time remote scanning for facility management. However, this study focuses on the system development method that acquires spatial information necessary for facility management through SLAM technology. To this end, we develop a prototype, analyze the pros and cons, and then suggest considerations for developing a SLAM system.

• JSTS:Journal of Semiconductor Technology and Science
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• 제14권2호
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• pp.169-174
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• 2014

As a versatile processing method for nanoscale memory integration, laser-induced epitaxial growth is proposed for the fabrication of vertical Si channel (VSC) transistor. The fabricated VSC transistor with 80 nm gate length and 130 nm pillar diameter exhibited field effect mobility of $300cm^2/Vs$, which guarantees "device quality". In addition, we have shown that this VSC transistor provides memory operations with a memory window of 700 mV, and moreover, the memory window further increases by employing charge trap dielectrics in our VSC transistor. Our proposed processing method and device structure would provide a promising route for the further scaling of state-of-the-art memory technology.