• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.2
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• pp.61-67
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• 2010

In operating estimation system, the river and lake is almost simple monitoring system or independent monitoring system. But the present system has many weak points about the concurrent analysis ability of various information collection. Sensors generating the information is not accurate. Therefore, we have something that can be improved. Although we have the related facilities of the purification plant, forebays and sewage disposal plant, and suffer from the difficulty about lack of system of estimation, management and control. As a result of this paper, monitoring system can observe the water pollution and various water environment of whole country. Also, through the sensors of USN, Zigbee, RFID and middle ware, which can service and construct service platform, we present standard plan of remarkable scalability service platform.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.25 no.5
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• pp.389-395
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• 2012

U-City has been promoted nation-wide by development of recent IT technology. This paper studied the concept of 3D-virtual city in order to realize the current Ubiquitous City(U-City) efficiently, and to manage all the RFID/USN monitoring data in the real U-City. 3D-Virtual City is the concept of the reproduction of real world U-City, for embodying Ubiquitous technology while using Digital map, satellite image, VRML(Virtual Reality Modeling Language). U&V-City is the four-dimensional future city that real-time wire/wireless communication network and 3D-web GIS shall be connected that massive database, intelligent service be perceived through employing EAI(External Authoring Interface) that provides HTML&JAVA, and interface for efficient removal/process of massive information/ service and also by employing GPS/LBS/Navigation in support of world-wide orientation concept, and RTLS(Real Time Location System).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.06a
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• pp.144-145
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• 2014

IoT (Internet of Things) is connected to all things Internet-based people and things, things and objects that communicate information between said intelligent technologies and services. Shipping each of a variety of devices that act independently from each other, but, it is actively interlock with each other is not easy practically days. Ship it within the means of communication, the communication between the ship, the communication between ship and shore configuration, SAN (Ship Area Network), RFID/USN, broadband communications, satellite communications and IT technology to a variety of marine environments for the safe navigation the ship's safety management system for the configuration you want to discuss the plan.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.18 no.9
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• pp.1047-1056
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• 2007

In this paper, we analyze the performance of the encoding and the modulation processes in the downlink and uplink of the EPCglobal Gen-2 system through the analysis and simulation. Furthermore, the synchronization issues on time and frequency domain and the preamble architecture are evaluated. By incorporating the encoding and the modulation technigue in the downlink and uplink, we assess the performance of the EPCglobal Gen-2 system. We also introduce the encoding and backscatter modulation process as well as the BER performance of FM0 code. In addition, the importance and the role of the frequency and time synchronization, such as the preamble and frame synchronization are explained. Through the simulation in the uplink on the detection probability through preamble, we find that the detection probability approaches 1 for 13 dB $E_b/N_0$.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.45 no.1
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• pp.1-7
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• 2008

Today, Korean medical community faces rapid changes in medical environment due to opening of medical market, more emphasis on making profit and introduction of private medical insurance. Therefore, it is apparent that around, major university hospitals, efforts are being made to adapt to such changes by establishing mid to long range strategic plans. We want to keep pace with changing times and diverse demand of patients by introducing state of the art system, utilizing Ubiquitous technologies for improvements. In doing so, we want to distinguish our hospital services from others. However, Hospital Information System that integrates ubiquitous technologies are introduced in limited basis due to problems like standardization and limits on medical use etc. Particularly, problems like absence of tag design suitable for medical environment, compatibility and extension issue with RFID system need to be addressed on application of RFID technologies. In order to solve such problems, this paper implemented RFID tag system, RFID-SIP UA program, location tracking program. This paper provides a comprehensive basic review of RFID and SIP model suggests the evolution direction of further advanced RFID application service. The design of RFID-SIP application offers advance RFID system with drawback and reduction search time of medical object. so there is a improvement of hospital information system in ubiquitous environment.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.3
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• pp.724-730
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• 2015

The safety-related accident in which the field operators of all sorts of industrial sites don't fasten the seat belt properly and which it generates is the tendency that it increases constantly every year. By sounding the announcement sound in case the operator did not fasten the seat belt and the person seat belt monitoring system proposed in this paper progressed the work the operator fastened the seat belt properly. In addition, at the same time with that, since the administrator monitored the seat belt wearing or no of the operators on a real time basis the safety-related accident which did not wear the safety equipment properly and which it generates was prevented.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.9
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• pp.1623-1632
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• 2008

In food choice, consumers consider importantly food safely and reliability focusing on a high qualify control. Also they are concerned about sustainable production and consumption considering of area and environment. In this paper, We propose and design the high-quality seafood production support system that is based on international sanitary standard haccp, traceability and eco-fiendly seafood certification for safety and reliability of the seafood production. The system is categorized into five part: aquafarm haccp, environmental control monitoring, traceability, disease prevention and messenger service and seafood price inquiry service. The proposed system utilize diverse ubiquitous-it technologies like usn, network cctv, mobile device etc.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.495-498
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• 2009

유비쿼터스 시대에서 요구하는 가장 핵심적인 요소기술 즉 인프라이며 이를 이용한다면 다양한 시설물에서의 침입자에 대한 감시, RFID를 이용한 효율적인 인력배치에 응용이 가능하고 또한 온도, 조도, 연기 센서 등을 활용하면 실시간으로 화재 및 테러에 대해 조기에 인지하여 빠르게 대처할 수 있다. 본 논문에서는 USN이 적용되는 대상은 침입탐지를 감시해야 하는 구역, 보안감시 대상이 되는 구역, 위험물 관리와 같은 구역으로 분류하여 구역의 특성마다 센서와 카메라, Tag와 센서(Hybrid Reader)기술 등을 하나의 센서노드로 융합하여 관리대상에 이상유무가 있을 경우 빠르게 대처하거나, Tag와 센서(Hybrid Reader)기술을 이용한 효율적인 인력배치 및 관리할 수 있도록 USN을 구성한다.

• 한국IT서비스학회:학술대회논문집
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• 2008.11a
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• pp.285-288
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• 2008

최근 IT 패러다임은 인터넷 중심에서 인간과 사물, 컴퓨터가 융합되는 기술로 급속히 전환되고 있다. 이를 위해 인간과 사물, 사물과 사물 사이 네트워크화를 위해서 RFID/USN 분야가 핵심 IT 산업군으로 형성되고 있다. USN을 활용한 다양한 서비스 가운데 u-Healthcare는 큰 사회적 이슈로 대두되고 있다. 이러한 u-Healthcare system의 원활한 활용을 위해서는 u-Healthcare system을 지원하는 미들웨어(Middleware)에 대한 연구가 필요하다. 따라서 본 연구에서는 미들웨어의 기능 중 센서(Sensor)를 통해 획득한 데이터의 정확성을 높이는 방법에 초점을 두었다. 이를 위하여 멀티 스레드(Multi Thread)방법을 u-Healthcare 미들웨어에 적용하여 다양한 어플리케이션에서 요구하는 개별 데이터의 정확성을 향상 시키는 방안을 연구하였다.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.83-86
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• 2008

도시의 많은 시설물을 좀더 지능화된 체계로 관리하기 위한 수단으로 RFID/USN을 이용한 솔루션이 다양하게 제안되고 있다. 최근에 상하수도, 전력, 가스, 통신 관로 등 지하시설물 관리분야도 기존의 도면 관리체계에서 센서를 이용한 실시간 운영관리시스템 형태로의 진화를 시도하고 있다. USN은 일반적으로 무선전송을 기반으로 발전시킨 기술로서 이를 지하 매설물 센서네트워크에 적용할 경우 여러 가지 제약사항이 따르게 된다. 전자기파의 물리적 특성상 지하에서는 통신이 어렵기 때문에 이를 보완할 수 있는 적용기술 및 시설물 분포에 맞는 네트워크 토폴로지 또 싱크 노드의 물리적 설치공간 확보 및 구동전력 공급 등 현장에서 부딪히는 여러 가지 네트워크 구축에 관련된 현안사항에 대하여 그 해결방법에 대하여 기술하였다.