• Proceedings of the KIEE Conference
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• 2002.04a
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• pp.219-224
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• 2002

This paper aims at developing remote control system to control and monitor distributed various devices such as UPS or photovoltaic inverter system through internet. TCP/IP(Transmission Control Protocol/Internet Protocol) and photovoltaic inverter system operated in a row are adopted for network management protocol and applied device, respectively. For controlling and monitoring distributed devices in real-time, java-environment software is constructed. Also, HelloDevice, general-use interface controller between network device and applied device is proposed. Finally, serial communication such as RS-232C is used between controller and applied device.

• Journal of the Korean Society for Precision Engineering
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• v.9 no.4
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• pp.36-43
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• 1992

This paper presents a hierarchical real-time operation control and monitoring scheme of the FMS/CIM center which has been implemented at the Automation and Systems Research Institute of Seoul National University. The hierarchical structure of the whole scheme consists of three lavers. The upper layer is in charge of on-line scheduling, computer network control, shop-floor monitoring and command generation for AGV dispatching, machining, assembly, inspection, set-up, etc. The middle layer has six modules, which are installed in the FMS host computer with the upper layer and run on the multi-tasking basis. Each module is connected to one of six cell controllers distributed in the FMS model plant and transfers operation command down to each cell controller through the Ethernet/TCP-IP local area network. The lower layer is comprised of six cell control software modules for machining cell, assembly cell, inspection cell, set-up stations. AS/RS and AGV. Each cell controller reports the status of the manufacturing facilites to the middle layer as well as ecxecuting the appropriate sequence control of the manufacturing processes.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.13 no.8
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• pp.787-795
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• 2001

An experimentation on the on-line fault detection and diagnosis(FDD) system has been performed with HVAC system in he experimental building constructed inside the large scale environmental chamber. Personal computer with a home-made FDD program by pattern recognition method utilizing artificial neural network was connected on-line via Ether-net TCP/IP to the supervisory control server for HVAC system. The FDD program monitored the HVAC system by 1 minuted interval. The results showed that he FDD program detected the sudden or abrupt faults such s those in fans, sensors and heater, etc.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.607-609
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• 2002

홈 네트웍 미들웨어 중 디지털 멀티미디어 데이터의 전송을 위한 표준인 HAVi는 IEEE1394를 네트웍 프로토콜로 사용함으로써 디지털 오디오／비디오 데이터의 효과적인 송수신이 가능하고 동적인 네트웍 재구성이 가능하다. 하지만, 이들 디지털 A／V 기기를 제외한 거의 모든 홈 네트웍 정보 단말은 TCP／IP를 통신 프로토콜로 사용하고 있으며, 이를 위한 미들웨어로 Jini 기술이 제안, 적용되고 있다. Jini는 자바 기술에 기반을 둠으로써 플랫폼 독립적인 특성과 코드의 이동성이 보장되는 특징이 있으며 network-and-play를 지원한다. 본 논문은 Jini 네트웍에서 HAVi네트웍에 존재하는 디지털 AV기기의 제어를 위한 HAVi 네트웍 제어 가능한 Jini 서비스의 구조와 제어 기법을 제안한다.

• Journal of the Korea Society for Simulation
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• v.6 no.2
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• pp.31-44
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• 1997

In medical applications, the cooperation work using computer network is in the spotlight as next generation technology, because it offers sharing of equipments, knowledge of specialists, and data and surmounts the limitations of geographical position and time. We present a prototype of telepresent surgical simulation system in this treatise. It is a telemedicine system using volume image, which is reconstructed from radiological images such as MRI and CT. It is used as a tool for surgical simulation among telepresent doctors. It provides the functions of conference control, volume reconstruction and manipulation, and multimedia database management among one server and multi-clients through high-speed network. It is implemented on Unix workstation using X-windows and C language, TCP/IP protocol and UNiSQL as DBMS.

• The Journal of Information Systems
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• v.17 no.1
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• pp.155-171
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• 2008

This thesis proposed a method that connecting step motor to image send board which can acquire image to move and remote controlling via streaming image board of PDA(personal digital assistant) based on embedded Linux which is using wireless network There are three embedded Linux system to embody movable image send board. First, though the wireless network a signal of PDA is transmitted to the board which has embedded Linux and a system which is controlled by the expansion I/O port of the board. Second, it's a system streaming realtime image at a PDA which has embedded Linux. The last is a system which controls a process of image board using TCP/IP communication and image send board at PC. These are the system which can use industrial settings and homes. It can also make use of an embodiment method about travelling image robot.

• Proceedings of the KIPE Conference
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• 2005.07a
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• pp.230-233
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• 2005

This paper present a new method for world wide network motor controlled system. It use disturbance observer to present high precision position control algorithm to disturbance change, and to apply this to induction motors. It shows that proposed algorithm is strong in induction motor precision control for disturbance change. This system with disturbance observer used deadbeat control, which have high benefit, is good for quick disturbance compensation. To show these effectiveness the whole process is simulated by simulink, and also experimented by DSP6416 with TCP-IP network board.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.303-304
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• 2016

본 논문에서는 기존의 TCP/IP 체계에서 탈피하여 보안 및 성능을 개선하기 위한 방안으로 콘텐트를 기반으로 한 네트워크 체계에 대해서 소개한다. OT-OCN은 기존의 CCN(Contents Centric Network)을 기반으로 컨텐츠의 기능을 추가하여 이를 바탕으로 자율성을 부여한 새로운 개념의 패러다임이다. 이러한 OT-OCN의 개발사는 미국의 CAT, Inc.(Cyber Advanced Technology)라는 회사로 이 기술은 보안뿐만 아니라 CCN을 통한 통신의 효율성을 극대화하고 또한 사물인터넷(IoT) 등에 활용 가능한 최적의 메커니즘이다. 본 논문에서는 이 기술의 기본적인 매커니즘에 대한 간략한 소개를 통해 차세대보안의 개념을 설명하고자 한다.

• Journal of Engineering Education Research
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• v.22 no.1
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• pp.55-60
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• 2019

This paper deals with the process and requirements of a capstone design project performed by undergraduate students. We discuss about the preliminary study for the capstone design, the derivation of a subject, the level descriptor of the subject, and the system requirements. And then, we summarize the results of the capstone design project entitled as Microsoft Azure based IoT (Internet of Things) system which is performed by 4 undergraduate students during 10 months. This system is composed of a Zigbee sensor network, the TCP/IP Internet, an IoT server, and a smartphone application program, with which we can gather the sensor data and control actuators at the far away area.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1795-1798
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• 2010

본 논문에서는 TCP/IP (Transmission Control Protocol/Internet Protocol) 기반의 모니터링 및 관리 시스템인 단순 네트워크 관리 프로토콜(SNMP : Simple Network Management Protocol)을 분석하여 모니터링 관리 프로토콜 설계에서 고려되어야 할 요구 사항 및 성능인자를 기술하였다. 또한 선박 네트워크 장치의 장애 및 통신선의 절체와 같은 동시 다발적인 사고로 인한 결손에 효율적으로 대처하기 위한 장애 관리 기능과 앞선 요구사항 및 성능 인자를 고려 하여 선박용 백본 네트워크 기반에서의 실시간 모니터링 관리 프로토콜을 설계 하였다.