• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.2
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• pp.249-253
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• 2013

This study analyzed that technological competition, variety and simility of Green IT fields using patents data. To achieve this, we limited range of Green IT that reduction of energy, eco-friendly technology. Therefore we conducted analysis of patents that power saving systems, light control system, smart system, cloud computing and green house/eco systems. As the result of that, power saving field was the most developed. The simililarty of power saving and cloud computing systems are very high and similiarities of light control system, green house/eco systems and smart system were very high.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.307-308
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• 2021

2020년 7월 정부는 포스트 코로나 시대를 선언하며, 한국판 뉴딜 정책을 발표하였다. 한국판 뉴딜은 디지털인프라 구축, 비대면 산업육성, SOC 디지털화를 기본방향으로 내세웠으며 빅데이터, 인공지능(AI), 사물인터넷(IoT) 등 4차산업 핵심기술의 육성방안을 제시하였다. 최근 인천공항은 한국판 뉴딜 정부정책에 부응하기 위해 인천공항 K-뉴딜 프로젝트를 추진 중이며, 세부 전략과제로 자산관리의 디지털전환을 위한 IoT기반 스마트 자산관리시스템을 구축 중이다. IoT기반 스마트자산관리시스템은 인천공항에 위치한 실내외 이동형 자산에 대해 끊김없는 위치정보를 제공하는 시스템으로 기존 시스템(RFID) 대비 약 4억 원의 인적, 물적 자원을 절감하는 효과를 나타낼 것으로 예상된다. 본 논문에서는 IoT기반 스마트 자산관리시스템의 핵심기술인 실내외 연속측위 스마트 트래커와 네트워크의 구성, 저전력 위치정보 제공방법을 제시한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37C no.12
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• pp.1318-1327
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• 2012

With the recent increased risk of livestock disease spread and human infection, livestock disease control has become very important. Consequently, there has been an increased attention on an implantable real-time monitoring and traceability system for individual cattle. Therefore, we have developed a robust monitoring and traceability system based on an implantable MFAN/RFID sensor tag. Our design combines the MFAN technology that is capable of robust wireless communication within cattle sheds and the 900MHz RFID technology that is capable of wireless communication without battery. In MFAN/RFID implantable sensor tag monitoring system, UHF sensor tag is implanted under the skin and accurately monitors the body temperature and biological changes without being affected by external environment. In order to acquire power needed by the tag, we install a MFAN/RFID tranceiver on the neck of cattle. The MFAN coordinator passes through the MFAN node and the RFID-reader-combined MFAN/RFID transceiver and transmits/receives the data and power for the sensor tag. The data stored in the MFAN coordinator is transmitted via the internet to the livestock history monitoring system, where it is stored and managed. By developing this system, we hope to alleviate the problems related to livestock disease control.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.1
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• pp.73-80
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• 2015

The valve device is installed in hazardous areas, such as a chemical plant explosion has been sealed with fire protection device to prevent the risk of explosion. In this paper, due to the explosion-proof devices using external power the device can not be used in infrared sensors and Zigbee sensor valve device by measuring the open degree of valve opening and closing of the danger zone to check whether. Valve opening and closing operation log screen time, we propose a low-power operation monitoring system administrators to manage and control the plant. Develop power control relay board apply an improved algorithm to apply the asynchronous LPL power management. The plant monitoring system and explosion-proof valve opening and closing the valve system with the intelligent device designed and implemented and tested it.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.493-496
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• 2007

As the ubiquitous society period has set in recently, which resulted from both mass distribution of portable devices such as PDA, PMP, Smart Phones, the demand for more optional features of system and multimedia functions has been increasing. In compliance with thoses needs, the amount of information increased in a system and greater power capacities are needed more than ever. Therefore, in portable device which uses battery as a limited source of power, the power management has become a key factor in the system. This paper concentrates on the Power management solution for Smart device for the prevention of missing child. And ARM9 Core was used as CPU and Windows CE 5.0 was ported to the smart device.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.786-788
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• 2005

전력 부하관리기기인 축냉시스템은 그동안 건물 냉방 공조용을 중심으로 보급되었다. 기저부하를 증진시키고 주간의 피크부하를 낮추어 주야간의 부하불균형을 해소하는 축냉시스템은 그동안 전력부하율 향상 및 부하평준화에 많이 기여해왔다. 산업용으로의 축냉기기보급의 타당성 및 부하평준화에 관한 연구시행 결과, 그 타당성과 보급확대의 필요성이 확인 되었다. 가스식 냉방기는 피크억제측면에서, 축냉식은 부하이전 측면에서 장점이 매우 크며, 전체 부하관리 측면에서 이들의 균형보급발전 노력이 필요하다. 산업용으로의 축냉기기 보급은 특히 주야간 부하불균형이 심한 하계의 부하평준화효과가 크며, 그 보급시장 및 전력절감 잠재량 규모를 감안할 때 국가적 편익과 추가 발전설비건설억제에 크게 기여할 것으로 예상된다.

• Proceedings of the KIEE Conference
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• 2006.11a
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• pp.132-134
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• 2006

최근 도입되고 있는 RCM(Reliability-centered Maintenance)은 전력 설비의 특성과 운용 환경에 따른 신뢰성 분석을 통해 설비의 목표 신뢰도를 유지하기 위한 가장 효율적이고 경제적인 유지보수 방법을 결정 하는 방법론이다. 본 논문에서는 전력 설비의 감시, 분석 및 진단 데이터를 데이터베이스로 구축하고 RCM 기법을 바탕으로 유지보수 방법을 제시하는 전력설비관리 시스템의 구성과 기능을 기술한다.

• Journal of Digital Contents Society
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• v.10 no.2
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• pp.217-223
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• 2009

In order to decrease the power consumption in Embedded Linux environment based on XScale PXA255, We produce the device driver of DFS(Dynamic Frequency Scaling) technique, design and implement the middleware DFM(Dynamic Frequency Management) to scale the power of embedded target board with porting this device drive, suggest the method to reduce the Embedded system's power consumption.

• Journal of Internet of Things and Convergence
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• v.5 no.2
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• pp.103-110
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• 2019

In this paper, we suggested how the Internet of Things (IoT) technology could be applied to an internet platform that is used for managing the customer's power grid efficiently. For an internet platform with efficient management, analysis is done by several sections; communication method, and its protocol, and also security element. From this analysis, with currently used sensors, we have presented a development method for the sensor to server data reliable communication solution and data management server with a security solution. Moreover, this paper suggests a communication module that could be used for a power grid management platform, protocol and security algorithm and also a way to build a server for managing those systems and modules.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06d
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• pp.397-401
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• 2010

IT 기기들의 보급 확대 및 정보량의 급증으로 인한 에너지 소비와 온실가스 배출량이 지속적으로 증가하고 있다. 이러한 증가로 인해 지구 온난화가 가속되고 있는 시점에서 탄소 배출의 효율적인 관리가 필수적인 요건으로 대두되고 있다. 이러한 배경을 바탕으로 본 논문에서는 전력시설물의 직접적인 전력사용량 뿐만 아니라 전력시설물을 유지하기 위해 필요한 제반시설물을 효율적으로 관리하기 위한 스마트 탄소 미터링 시스템의 하드웨어 시스템에 대해 알아보고자 한다.