• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.6
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• pp.1388-1393
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• 2007

The Microprocessor Based Laboratory Systems(MBL) with the remote access functional could put basic science experimental facilities together by providing a modem platform that the students can utilize simultaneously to learn basic physics, chemistry and biology, Our educator target platform combines a highly integrated 8-bit embedded Atmega128 processor and real time embedded OS (operating system), allowing plenty of headroom for follow-on basic science projects for students. The proposed MBL-NUTOS (Microprocessor Based Laboratory-NUT/OS) employed in the lab are available with internet base simulation capabilities, on public servers and students personal PCs, enabling the students to study at home and increasing the opportunity of accessing for the science laboratory facility.

• Proceedings of the KIEE Conference
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• 2004.07c
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• pp.1972-1974
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• 2004

본 논문에서는 디지털 오실로스코프와 이더넷(TCPIP)을 기반으로 한 극초단파 부분방전 신호취득 체계를 개발하였다. 원격으로 오실로스코프를 제어하고 측정한 부분방전 신호를 취득, 전송, 저장, 분석 할수 있는 체계를 개발하였다. 기간 구성품으로 최근 발전된 윈도우즈 기반 디지털 오실로스코프와 Labview를 사용하여 가스절연개폐장치(GIS) 내부에서 발생하는 극초단파 부분방전 신호를 측정하고 저장하여 실시간으로 위상분해 분석방법을 적용하여 측정된 신호를 표시하였다.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.756-757
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• 2011

보호장치는 전력계통에 고장이 발생할 경우 신속 정확 하게 고장을 검출하여 고장부분을 계통으로부터 분리시킴으로써 각종 설비의 손상을 막고 정전구간을 최소화 하여 계통의 안정화를 향상시키는 장치이다. 현재 한전 및 발전사 뿐만아니라 수자원공사의 수도사업장에서도는 원격감시 제어를 통한 무인화와 함께 디지털보호계전기가 설치 운영되고 있다. 디지털 보호계전기는 기존의 기계식 보호계전기가 수행하는 보호기능보다 우수한 성능이 입증되었으며 최근 반도체 기술의 비약적 발전과 보호 알고리즘의 지속적인 개발로 보호계전기의 디지털화가 가속되고 있고 더욱 개선된 고성능, 다기능의 보호계전기 또는 IED가 산업현장에 적용되는 추세에 있다. 본 논문에서는 과전압 보호계전기와 부족전압 보호계전기의 기능 및 동작특성에 대하여 연구하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.5
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• pp.454-463
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• 2013

The smart phone has already proliferated, and the smart devices of the living appliances and vehicles embedded with communication device, sensors and connected with the smart phone have been developed. Currently it can provide simple remote controller and user interfaces, it could be envisaged that intelligent technology is converged with the smart phone, and Personal Environment Service in which the smart devices are configured automatically as reflecting personal preference, device attribute, and living environment condition would be activated in the future. In this paper PES services, system architecture, and core technology are described.

• Journal of the Korean Society for Railway
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• v.7 no.4
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• pp.296-301
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• 2004

This paper addresses an analysis for a railway data transmission protocol-Ethernet based data transmission between the CTC(Centralized Traffic Control System) and the SCADA(Supervisory Control and Data Acquisition) system. Fame error rates of the data transmissions are calculated and compared for the two cases that the CTC/SCADA has an extra data transmission error control(CRCI6) besides the inherent error control of the Ethernet(CRC32), and that the CTC/SCADA has no extra data transmission error control. With simulation results it has been verified that the extra data transmission error control(CRC16) contributes to lowering the frame error rate.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2319-2321
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• 2003

본 연구에서는 전력계통에서 배전반 자동화 장치중 하나인 ACB(air circuit breaker) controller로 사용되는 OCR(Over Current Protection Relay)의 지능화와 성능개선을 모색하고자 한다. 개발된 이 장치는 전력계통에서 전류의 흐름을 지능화 알고리즘으로 감시하여 최적으로 사고를 방지할 수 있으며, 대화형의 다양한 기능과 통신기능을 내장하고 있어 원격제어 및 관리가 가능하는 특징을 포함한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.915-916
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• 2014

최근 스마트 폰의 확대로 다양한 서비스 모델에 대한 연구가 진행되고 있다. 본 연구에서는 스마트 폰을 기반으로 주유소 액화장치의 전체적인 환경요소를 모니터링 함과 동시에 설비의 원격에서 관리하고 제어할 수 있는 통합 관리시스템을 설계하고자 한다. 또한, 본 연구의 주요한 기술은 요소는 액화장비의 기반설비에 대하여 발생할 수 있는 각종 장애를 사전에 감지하고, 장애 발생 시 신속히 대응할 수 있는 감시체제에 대하여 체계적으로 연구하고, 유류설비 및 전기설비를 운영 및 관리하는 환경에서는 기기의 작동상태, 액화장치의 운전상태 및 고장 유무, 화재발생시 신속한 통보체계를 구현하고자 한다.

• Explosives and Blasting
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• v.26 no.2
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• pp.92-98
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• 2008

Measuring methods of the blasting vibration were generally divided the. manual method and the automatical method. When using the automatical method, field data of the vibration meter can be transferred to a operation computer by using remote equipments. In this study new automatical system using solar power supply is to be introduced. New automatical system is well suited for the field which is difficult to access and is needed frequent measurements of the blasting vibration. And it can make easy to accumulate the data and control the blasting vibration for safe blasting.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.583-586
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• 2005

We propose a shelter guidance system using the PLC communication to resolve that a conventional shelter guidance light for underground space has problems. The proposed shelter guidance system is composed of a main control part, a PLC remote control part, a charging part, a sound generation part, a display part, an alarm part and a smoke sensing part.. The efficacy of the proposed system is verified by means of experimental. Experimental results are presented that show the effectiveness and the improvement of noise.

• Journal of Convergence for Information Technology
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• v.12 no.1
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• pp.22-30
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• 2022

In order to prevent chemical accidents caused by human error, a chemical accident prevention and response training program using advanced technology was developed. After designing a virtual process based on the previously built pilot plant, chemical accident response contents were developed. A part of the pilot facility was remodeled for content realization and a remote control function was given. In addition, a DCS program that can control facilities in a virtual environment was developed, and chemical process operator training (OTS) that can finally respond to virtual chemical accidents was developed in conjunction with AR. Through this, trainees can build driving skills by directly operating the device, and by responding to virtual chemical accidents, they can develop emergency response capabilities. If the next-generation OTS like this study is widely distributed in the chemical industry, it is expected to greatly contribute to the prevention of chemical accidents caused by human error.