• Journal of information and communication convergence engineering
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• 제8권6호
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• pp.665-670
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• 2010

This paper suggests the vehicle remote control on the basis of Smart Phone. In general, most smart phone is mounted with G-sensor to control the motion. G-sensor is able to control several directions and movements of velocity along with X, Y, and Z axis. To access remote location and data system, we can also utilize Wi-Fi communication as well as bluetooth communication. In this study, we propose the scheme that is the car management application by remote control via real-time monitoring on mobile device for user convenience.

• 동력기계공학회지
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• 제11권1호
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• pp.28-32
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• 2007

This research proposed that development of wireless condition monitoring system using WLAN network. It offers the prospect of improved performance that removed a current a coaxial cable and reduced overall cost of condition monitoring. Recently, there is an interesting concern for wireless system as an infrastructure technology construct ubiquitous computing environment in the future. High performance computing board makes minimization with integrate of a various functions which support wireless LAN network. Instead of wired coaxial cable using measurement system in industry, wireless LAN network assists industry automation and engineer's convenience. Developed system adapted wireless LAN network on shipboard with engine room and deck house, it also executes wireless measurement test on 8500TEU containership.

• 융합신호처리학회논문지
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• 제10권3호
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• pp.176-180
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• 2009

This paper investigates protocol architecture for a web-sensor gateway interconnecting internet and wireless sensor network, in which Zigbee sensors are connected over the IEEE802.15.4 communication protocol standard. The web-sensor gateway is to deliver data between TCP/IP and Zigbee/IEEE802.15.4 protocols, transparently. Since the gateway provides a means to remotely control and aggregate sensor data over the internet, it needs to be designed in the view point of users and in their convenience. In accordance, the common gateway interface technology satisfying users on the web browser to efficiently manage and query the sensors in the wireless sensor networks, ubiquitously, is also introduced. Finally, a simulation prototype for the web-sensor gateway is proposed and verified using OPNET simulation tool.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 춘계 학술논문 발표대회 학계
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• pp.21-24
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• 2009

This study deals with the application of USN wireless inclinometer sensor for earth retaining structure safety measurement, The application of wireless inclinometer sensor has great advantage about real-time monitoring of earth retaining structure, It allows a construction manager to monitor movement data from anywhere connected through internet during the process of excavation for substructures of buildings, To validate the applicability of the wireless inclinometer sensor. laboratory and field tests have been performed, The results have shown that the measured values of wireless inclinometer sensor represent the behavior of H-pile well, Both convenience of sensor installation and real-time monitoring of earth retaining structure are confirmed, The proposed wireless measurement system provides a good basis for exact measurement of temporary substructures, More measurements and application are expected for the other excavation sites with various conditions.

• 디지털산업정보학회논문지
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• 제4권3호
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• pp.115-126
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• 2008

This thesis is the research for methods to forecast of dynamic changes at retail stores in the ubiquitous era, and, through adopting RFID based technology, to minimize cost of operation of stores and bringing up better customer service. The core methods had been researched and studied are to build future-oriented stores by providing store system with better customer's convenience based on referring to case studies of future-oriented stores and efficient inventory management method enabling more profitable store, and adopting Smart Carts, Smart Shelf and e-POP and environment sensors as a method in order to provide more improved customer service.

• 한국정밀공학회지
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• 제28권2호
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• pp.176-184
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• 2011

As modern megalopolises become more complex and huge, convenience and safety of citizens are main components for a welfare state. In order to make safe society, telemetrics technology, which remotely measures the information of target system using electronic devices, is an essential component. In general, telemetrics technology consists of USN (ubiquitous sensor network) based on a wireless network, smart sensor, and SoC (system on chip). In the smart sensor technology, the following two problems should be overcome. Firstly, because it is very difficult for transducer manufacturers to develop smart sensors that support all the existing network protocols, the smart sensor must be independent of the type of networking protocols. Secondly, smart sensors should be modular so that a faulty sensor element can be replaced without replacing healthy communication element. To solve these problems, this paper investigates the feasibility of an IEEE 1451 based ZigBee smart sensor system. More specifically, a smart sensor for large network coverage has been developed using ZigBee for active telemetrics.

• 대한전자공학회논문지TC
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• 제45권5호
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• pp.1-11
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• 2008

무선 센서 네트워크(Wireless Sensor Network : WSN)는 U-City 같은 우리 삶의 편의성 향상을 위한 서비스에 활용은 물론이거니와 환경오염, 터널 및 건축물의 붕괴, 태풍, 지진 등의 재난 감시, 위험물 진단 시스템 등에 다양하게 적용되고 있다. 본 논문에서는 이러한 WSN을 다양한 형태의 휴대 단말 및 네트워크 카메라와 연동하여 보다 효율적이고 가치 있는 정보 서비스 제공을 위한 MUSNEMO(Multi-sensor centric Ubiquitous Smart sensor NEtwork using MObile devices) 시스템을 제안하였다. 제안된 시스템은 IEEE 802.15.4 표준을 기반으로 스마트 센서 네트워크를 구성하며, 또한 제안한 시스템 구조의 활용성 검증을 위하여 다섯가지 응용 센서(자기, 조도, 소리, 모션, 진동)를 가진 망을 구성하여 센싱 이벤트 요청 및 제공 테스트를 수행하였다.

• 통상정보연구
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• 제9권2호
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• pp.19-40
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• 2007

In recent, T-commerce is widely dispersed as alternative type of commerce. It is forecasted that t-commerce system is used more than e-commerce system. Therefore more and more t-commerce-related industries are also recognizing that t-commerce is a critical business model. It is needed to understand the concept of t-commerce and develop the t-commerce marketing strategy. CEO analyses consumer's behaviors according to the data about buyers and applies the advantage of t-commerce to the communication with customers. This t-commerce system plays an important role in maximizing customer satisfaction and affecting their intention to reuse it. Therefore this paper attempts to identify T-commerce critical success factors and divide between use-intention group and unuse-intention group by taking out a discriminant function by the discriminant analysis. This lays a foundation in developing T-commerce strategy. According to the discriminant function extracted, convenience factor, amusement factor, system quality factor, product perception factor are significant in the sequence of influential degree. However, usefulness factor and speedy connection factor are not significant. In result, the target hitting rate is 77.9% in the first unuse-intention group and it is 95.2% in the second use-intention group. The total discriminant target hitting rate is computed to higher value, 86.55%. The statistic package, SPSS 12.0, is used to survey and analyse data and test the hypothesis. The validity and reliability of variables are verified by both reliability analysis and factor analysis. The discriminant analysis is used to tell the difference between use-intention group and unuse-intention group.

• 경영과정보연구
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• 제34권3호
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• pp.141-160
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• 2015

USNs, NFC, M2M에서 확장된 사물인터넷은 새로운 컨버전스 기술로써 주요 이슈가 되고 있다. 사물인터넷은 인간의 개입 없이 센싱 네트워크와 프로세싱 간에 공동으로 지능형 연결을 구축할 수 있는 네트워킹으로 정의된다. 본 연구의 목적은 사물인터넷이 물류 산업에 기여하는 것과 미래 사회에 대한 변화를 예측하는 것이다. 실제 세계 시장의 리더가 되기 위해서는 물류 산업의 사물인터넷 개발을 더 많이 요구하고 새로운 서비스 창조와 차별화된 시장을 위한 전략이 필요하다. 그러므로 물류 산업의 세계 리더가 되기 위해서는 다른 것들 보다 사물인터넷 표준화, 사생활 보호, 보안문제 등이 중요하다는 것을 알 수 있다. 따라서, 본 연구에서는 물류 산업의 사물인터넷 개발을 위해서 고객편의를 높이도록 노력하고 소비자의 수요를 잘 고려하여 차별화된 사물인터넷 물류 서비스를 제공할 수 있게 하여야 한다는 것을 보여주고자 함이 본 논문의 목적이며, 이를 위해 국내외 사례를 분석하고자 한다.

• 한국전자거래학회지
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• 제15권4호
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• pp.1-19
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• 2010

최근에 유비쿼터스나 전자상거래와 같은 환경에서 발생하는 실시간 데이터를 처리해야 하는 요구가 늘어나고 있다. 유비쿼터스 환경에서 사용되는 센서 데이터는 그 크기가 작고 XML 문서로 표현 되어 있으며 대량으로 발생하는 특징이 있다. 이러한 대량의 센서 데이터를 처리하기 위한 효율적인 방법이 요구되고 있다. 센서 데이터에 대한 XML 질의언어(XQuery)는 주로 센서 데이터가 발생한 센서의 식별자나 표현하고자 하는 정보를 얻어오는 것과 사용자의 편의를 위한 결과 재구성으로 분류된다. 기존의 XML 질의언어 엔진들은 센서 데이터를 일괄적으로 처리하기 위한 효율적인 방법을 가지고 있지 않다. 본 논문에서는 대량의 센서 데이터들을 실시간으로 처리하기 위하여 역 경로 요약을 이용한 가지 질의(Twig Query) 처리 기법을 적용하였다. 또한, 재구성(Restructuring) 일괄 처리 기법을 개발하여 적용하였다. XMark와 RFID EPC 데이터를 이용한 성능 측정을 하고 MonetDB/XQuery와 Oracle Berkeley DB XML과의 비교 분석을 수행하였다.