• Journal of Advanced Navigation Technology
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• v.13 no.2
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• pp.252-256
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• 2009

In this paper, the emergency light where is being scattered always inspection and will be able to manage from the management center. Is not interfered in data neck of a bottle actual condition and the data communication will be possible and the cluster monitor network will grow and uses establishes the emergency light monitoring system. Will not be interfered in location of emergency light and not to be will be able to establish the system. And the monitoring network there is by a destroyer and the communication relay system is born breakdown but the dead zone without condition of emergency light proposes the emergency light management system where the monitoring and management are possible.

• Journal of Korean Society of Water and Wastewater
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• v.26 no.4
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• pp.555-563
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• 2012

Due to the importance of energy-saving and CO2 reduction is being emphasized in the world, efforts to find a solution for the problems is increasing rapidly. In particular, the renewable energy is on understanding as a breakthrough for the protection of the environment and the economic development, so it is intensively fostered as future industries. Developed countries are already pursuing policy and technology development related with renewable energy. In this paper, we will develop MHD(Magneto Hydro Dynamics) technology to supply the commercial power that can is targeted at water pipe related with hydro power among renewable energy technologies. Kinetic energy of fluid flowing in the water pipe is converted into electric power. It allows stable power supply to the various sensors and devices on water pipe. We have performed several experiments to verify the application possibility of the developed technologies and present the result and a method of performance improvement of the technologies.

• Journal of Advanced Navigation Technology
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• v.12 no.6
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• pp.611-618
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• 2008

The development of information society together with information telecommunication's influence on the human society is a ripple effect and getting wider. Among those ripple effects the disaster prevention is in the public eye in the present day. On the way to the ubiquitous society the main techniques to be concerned in ubiquitous sensor networks are the field of damage of storm and flood, safety facilities, traffic safety, industrial safety, energy safety, fire fighting, specific safety of radioactivity escape incident, environmental pollution, sea pollution, mountain and forrest disaster so on. In this paper the USN technique based on the disaster prevention communication technology service and its requirement technology and application are studied.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.49 no.1
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• pp.31-46
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• 2012

The most critical technology to implement ubiquitous health care is Ubiquitous Sensor Network (USN) technology which makes use of various sensor technologies, processor integration technology, and wireless network technology-Radio Frequency Identification (RFID) and Wireless Sensor Network (WSN)-to easily gather and monitor actual physical environment information from a remote site. With the feature, the USN technology can make the information technology of the existing virtual space expanded to actual environments. However, although the RFID and the WSN have technical similarities and mutual effects, they have been recognized to be studied separately, and sufficient studies have not been conducted on the technical integration of the RFID and the WSN. Therefore, EPCglobal which realized the issue proposed the EPC Sensor Network to efficiently integrate and interoperate the RFID and WSN technologies based on the international standard EPCglobal network. The proposed EPC Sensor Network technology uses the Complex Event Processing method in the middleware to integrate data occurring through the RFID and the WSN in a single environment and to interoperate the events based on the EPCglobal network. However, as the EPC Sensor Network technology continuously performs its operation even in the case that the minimum conditions are not to be met to find complex events in the middleware, its operation cost rises. Moreover, since the technology is based on the EPCglobal network, it can neither perform its operation only for the sake of sensor data, nor connect or interoperate with each information system in which the most important information in the ubiquitous computing environment is saved. Therefore, to address the problems of the existing system, we proposed the design and implementation of USN integration management system. For this, we first proposed an integration system that manages RFID and WSN data based on Session Initiation Protocol (SIP). Secondly, we defined the minimum conditions of the complex events to detect unnecessary complex events in the middleware, and proposed an algorithm that can extract complex events only when the minimum conditions are to be met. To evaluate the performance of the proposed methods we implemented SIP-based integration management system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.11
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• pp.5518-5524
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• 2012

The world today, has come to an age of diverse paradigms and technologies being developed, and technology of a new field is realized by merging technologies of different fields.One of such, u-Health system refers to a system which can monitor its users, regardless of time and place, using many body sensor datas based on USN (Ubiquitous Sensor Network). In the past, this kind of u-Health system was able to collect sensor datas through wires and could be monitored only by using PC (Personal Computer), but with development in technology, the system is now becoming possible to collect sensor datas wireless and monitor unhindered by time and place. This research aims to collect sensor datas of the user, and through Jena inference network, provide web service and smartphone application which enables checking of user's body datas in times of emergency, whenever, wherever.

• 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 Information Science Society Conference
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• 2005.11a
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• pp.52-54
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• 2005

모든 사물에 고유 식별 정보(Unique Product Identifier)가 부착되어 사물의 개별 관리 및 컴퓨팅 환경을 구성하는 RFID(전자식별) 기술이 다양한 응용 및 구현 기술을 위해 활발하게 연구되고 있다. 하지만 수동형 태그 기반 RFID 시스템은 태그 자체의 자원 제약성 때문에 인가되지 않은 사용자에 의한 악의적인 태그 점보 노출이 용이하고, 그 결과 개인의 프라이버시 및 정보의 기밀성이 위협받게 된다. 비록 이를 예방하기 위해 다양한 보호 기법이 제안 되고 있지만 수동형 태그에 적용하기 힘들거나(예: Hash 기반 메카니즘) 보안에 취약하다. 따라서 본 논문에서는 태그 코드 암호화와 리더 인증 관리를 통해서 수동형 태그에 적합하고 프라이버시 보호 및 기밀성을 제공할 수 있는 메카니즘을 제안하고자 한다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2009.04a
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• pp.479-482
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• 2009

본 논문에서는 유비쿼터스 기술을 이용한 대기오염 관리 기술개발을 제안하였다. 현재의 시스템은 오염정도의 이해, 정보제공의 부족으로 인한 문제점을 안고 있다. 또한 한정된 지역에서의 오염측정으로 인하여 광범위한 지역을 측정하는데 한계가 있다. USN 기술은 이러한 문제점을 보완하여 도시전체를 관리할 수 있는 무선의 센서네트워크 구성이 가능하다. 근거리 무선통신기술인 ZigBee 기술을 기반으로 센서망을 구축하여 게이트웨이를 거쳐 통합관제센터로 데이터를 전송하게 된다. 분석된 데이터는 통합관제센터를 거쳐 도시내의 옥외 전광판, 개인 휴대단말기로 정보를 제공하고, 이에 따른 대책방안도 함께 알리는 방식을 제안하고자 한다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2009.04a
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• pp.463-466
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• 2009

본 논문에서는 유비쿼터스 센서네트워크 기반의 교량 상태 모니터링 시스템 적용을 위해 센서노드를 개발하고, 개발된 센서에 토목계측용 센서를 적용하기 위한 인터페이스 모듈과 기타 Accessary 보드를 제작하였다. 그 후, 최종적으로 개발된 센서를 이용하여 현장 적용성 테스트를 하였다. 실외 실험은 충청남도에 위치한 삽교대교에서 수행 하였으며, 본 실험에서는 실제 센서와 센서 노드를 교량 하부에 설치하여, 원격 데이터 전송 가능 여부를 확인 하였으며, 획득된 데이터를 통하여 향후, 유비쿼터스 센서네트워크 기반의 교량 상태 모니터링 시스템의 적용 가능성을 확인 할 수 있었다.

• Journal of Korea Society of Digital Industry and Information Management
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• v.5 no.3
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• pp.9-18
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• 2009

This paper proposes a Ubiquitous Henhouse Monitoring System (UHMS) that can not only monitor henhouse's conditions and raising environments, but also control the henhouse remotely by using sensor network technology. The system consists of three layers. The physical layer connects sensors with facilities. The middleware layer processes and manages data collected from the physical layer. And the application layer provides the user with the user requested services. The system provides a real-time monitoring service, a facility controlling service, an expert service, a consumer safety service, and a mobile message service via interacting with components of each layer. Finally, a henhouse model is defined and the relevant system components and the application GUIs are implemented.