• Proceedings of the KAIS Fall Conference
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• 2010.05a
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• pp.95-98
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• 2010

유비쿼터스 컴퓨팅 시대를 맞이하게 되면서 많은 유비쿼터스 센터 네트워크 시스템이 개발되고 있으며 개발환경과 서비스 분야도 다양하다. 이러한 USN시스템의 경쟁력을 높이기 위해서는 분석, 모니터링 도구가 요구되지만 현재 개발된 도구들의 대부분은 특정 하드웨어, 운영체제, 미들웨어 등에 종속적이어서 다양한 USN시스템을 분석하기에 어려움이 있다. 본 논문에서는 신속하고 범용적인 분석, 모니터링 도구를 개발하기 위해서 대부분의 센서 네트워크 장비에 사용되는 시리얼 통신을 사용하며, 여러가지 통신 장비들의 분석을 위한 제어와 통신을 위한 데이터 형식에 대한 설계를 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1705-1707
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• 2010

유비쿼터스 컴퓨팅 시대를 맞이하게 되면서 많은 유비쿼터스 센터 네트워크 시스템이 개발되고 있으며 개발환경과 서비스 분야도 다양하다. 이러한 USN시스템의 경쟁력을 높이기 위해서는 분석, 모니터링 도구가 요구되지만 현재 개발된 도구들의 대부분은 특정 하드웨어, 운영체제, 미들웨어 등에 종속적이어서 다양한 USN시스템을 분석하기에 어려움이 있다. 본 논문에서는 신속하고 범용적인 분석, 모니터링 도구를 개발하기 위해서 대부분의 센서 네트워크 장비에 사용되는 시리얼 통신을 사용하며, 여러가지 통신 장비들의 분석을 위한 제어와 통신을 위한 데이터 형식에 대한 설계를 제안한다.

• Smart Media Journal
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• v.1 no.1
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• pp.42-47
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• 2012

With the development of RFID and USN technology, kinds of services are appeared and industrialized to maximize management, maintenance and efficiency of production. In the agricultural field, it is important to increase productivity and quality of food by managing growth environment of plants. In this paper, to apply IT technology to agriculture, we present a mobile service application called WiSEMobile which support growers to monitor and manage the information in the field from remote sites. By using the service with mobile devices, farmers can monitor the change of environment with data from sensor nodes, manage and exchange kinds of data gathered by farmers in the field.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10d
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• pp.174-178
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• 2006

유비쿼터스 환경을 실현하기 위한 핵심 기술로 RFID가 주목받고 있고 많은 연구가 이루어지고 있다. RFID는 점점 소형화되고 주변의 모든 환경 및 사물에 부착 될 것이다. 이러한 환경에서 RFID Tag가 부착된 개체들의 관리와 Middleware의 중요성이 부각되고 많은 기관에서 연구가 진행되고 있다. USN/RFID 환경 하에서 사용하기 위한 Middleware는 다음과 같은 기능이 필요하다. 첫째, RFID가 부착 된 개체가 주위 환경에 민감한 개체일 경우 Middleware에서 자체적으로 상황을 인지하여 대처해야 한다. 둘째, 방대한 양의 raw 데이터 처리를 부하 없이 처리해야 한다. 셋째, 실제 RFID를 적용했을 경우 한 종류의 RFID 장비만을 사용하는 것이 아니므로 다양한 종류의 RFID 장비를 인식할 수 있는 Middleware가 필요하다. 본 논문에서는 RFID에 센서와 무선통신 기술을 결합하여 상황인식(context-aware)이 가능하고, 분산처리 환경을 도입하여 방대한 양의 데이터를 처리 가능하며, 다양한 프로토콜이나 주파수의 장비를 통합적으로 적용 가능한 Middleware의 설계를 제안한다.

• Journal of the Korea institute for structural maintenance and inspection
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• v.16 no.1
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• pp.120-130
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• 2012

As long span and complex bridges are constructed often recently, safety estimation became a big issue. Various types of measuring instruments are installed in case of long span bridge. New wireless technologies for long span bridges such as sending information through a gateway at the field or sending it through cables by signal processing the sensing data are applied these days. However, The case of occurred accidents related to bridge in the world have been reported that serious accidents occur due to lack of real-time proactive, intelligent action based on recognition accidents. To solve this problem in this study, the idea of "communication among things", which is the basic method of RFID/USN technology, is applied to the bridge monitoring system. A sensor node module for USN based intelligent bridge system in which sensor are utilized on the bridge and communicates interactively to prevent accidents when it captures the alert signals and urgent events, sends RF wireless signal to the nearest traffic signal to block the traffic and prevent massive accidents, is designed and tested by performing TinyOS based middleware design and sensor test free Space trans-receiving distance.

• 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.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.85-91
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• 2014

Nowadays, Dynamic lighting control and management skills are studied and used. If the system which is to manage multiple intelligent spot applied ubiquitous service technology is built with decision making and used in the complex intelligent space like a apartment then will improve energy efficiency and provide comfortability in optimal conditions. To solve this problem distributed autonomous control middleware and energy management system which process data gathering by zigbee mesh network and search proper services to save energy by the existing state of things is necessary. In paper we designed DDLEMS (Distributed Dynamic Lighting Energy Management System) that is to service duplex communication embedded by software based home server platform to provide mobile services in the smart place and support decision making about energy saving to the best use of wireless censor node and controled network, energy display devices.

• Journal of Korea Spatial Information System Society
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• v.11 no.4
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• pp.19-27
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• 2009

Integrated Urban Spatial Information Management Platform (USIMP) is defined as an operational environment where technologies for intelligent management of urban facilities are made possible through the integration of diverse technologies such as sensors for ground and underground facilities, middleware technology, wired and wireless network, GIS-USN linkage. To make the integration of these diverse technology possible, it is imperative to have a sound reference model for the platform. This paper provides a standardized reference model for USIMP based on the RM-OPD(Reference Model for Open Distributed Processing) standard.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.46 no.1
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• pp.103-111
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• 2009

In SCA, the core framework must include the domain parser to parse the domain profile and thus reconstructs the platform on the time including the starting of the platform, the initialization of the new radio, and etc. The domain profile is described in XML and it includes the characteristics about the software component or the hardware device in a platform. Elementarily, the core framework has to have within the domain profile parser in order to parse the domain profile. In this paper, in order to apply to the limited environment like the mobile terminal, we propose the method for reducing the size of the domain profile parser and for strengthening the independency of the XML parser vendor to have with the domain profile parser. Therefore, domain profile parser can be solve the problem like the overhead about the DOM tree creation due to the repetitive parsing of the domain profile, the compatibility degradation by the specific XML parser vender, the dependency about the domain profile technique, and etc.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.10a
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• pp.119-126
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• 2008

도시공간정보 통합플랫폼은 도시의 체계적이고 과학적인 관리, 특히 지상 및 지하시설물 관리에 필요한 센서 및 미들웨어 기술, 유무선 네트워크, GIS-USN 연계 등의 요소기술이 집적된 지능형 도시운영 기반환경으로 정의된다. 도시공간정보 통합플랫폼은 상수도, 하수도, 가스, 난방, 송유, 전력, 통신의 7대 지하시설물과 교량, 육교, 터널 등 도시 지상시설물 등 도로기반시설물 관리를 지능화 할 수 있는 기반 환경을 제공하는 역할을 수행해야 한다. 본 연구에서는 지능형 도시공간정보 통합플랫폼 개발을 위해 플랫폼의 비전을 설정하고 개방형 분산처리 레퍼런스 모델(RM-ODP, Reference Model for Open Distributed Processing)의 적용을 통해 개발전략을 도출하였다.