• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.281-286
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• 2006

본 논문에서는 홈 환경에서의 사용자의 컨텍스트에 따라 지능적으로 반응하는 미디어 콘텐츠인 vrFlora 을 소개한다. 이는 사용자의 정적인 프로파일 및 간단한 조작 정보 등을 이용하여 사용자의 명시적인 컨텍스트를 인지한다. 그리고 인지된 컨텍스트에 따라 vrFlora 의 자체적인 동기, 즉 감정과 욕구을 자율적으로 변화시키며 이에 따라 자발적인 반응을 표현한다. 더 나아가 사용자에 따라 동기의 변화 정도를 차별화 함으로써, 사용자에 따른 개인화된 반응을 나타낸다. 제안한 시스템의 유용성을 평가하기 위하여 스마트홈 환경을 위한 테스트 베드인 ubiHome 에 vrFlora 를 구현하였다. 그리고 사용자로 하여금 이를 자연스럽게 경험해 볼 수 있도록 하였다. 이를 통해 미래형 홈 환경에서의 지능형 미디어 콘텐츠에 대한 응용 가능성을 제시한다.

• Proceedings of the KIEE Conference
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• 2006.10c
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• pp.491-493
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• 2006

We introduce Location PDA Program which is a mobile system to display current location on PDA. The current location is calculated based on collecting location through each fixed node. Each fixed node sends location information of mobile node to Cell Manager system. And then, Cell Manager calculates final location based on related information and sends it to every mobile system which is connected to server and displays current location.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.10a
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• pp.285-288
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• 2004

스마트 홈은 유비쿼터스 환경의 각종 센서와 정보가전에서 얻어지는 데이터에서 사용자의 Context를 추출하여 사용자에게 적응적인 서비스를 제공한다 지금까지의 Context는 사용자가 한 명일 경우를 가정하였지만 실제 집이라는 공간은 가족이라는 구성원이 함께 생활하는 공간으로 동시에 여러 개의 Context가 존재하며 이러한 Context는 서로 충돌할 수도 있다. 본 논문에서는 집에서 여러 Context들 간에 충돌이 일어났을 때 이를 해결하는 방법을 제안한다. 집은 여러 사용자가 공유하고 있지만 각 구성원의 침실이나 화장실처럼 한 개인의 영역이 존재한다 또한 침실은 쉬는 곳, 주방은 요리를 하고 음식을 먹는 곳, 거실은 가족끼리의 모임을 갖거나 TV 시청, 음악감상 등의 여가를 즐기는 곳 등 공간마다 나름의 용도를 가지고 있다 본 논문은 Context들간의 충돌을 조정을 위해 이러한 공간의 특성을 이용할 것을 제안한다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.6 no.3
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• pp.197-201
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• 2006

In the implementation of a smart home, activity recognition technology using simple sensors is very important. In this paper, we propose a new activity recognition method based on Bayesian network (BN). The structure of the BN is learned by K2 algorithm and is composed of sensor nodes, activity nodes and time node whose state is quantized with reasonable interval. In the proposed method, the BN has less complexity and provides better activity recognition rate than the previous method.

• Journal of information and communication convergence engineering
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• v.8 no.4
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• pp.443-448
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• 2010

The electrical curtain is an electronic product which is most suitable for the sphere of intelligent home network. It provides the basic feature of intelligent home network such as the followings; various functions, powerful control. It also becomes the ideal technology with inexpensive power-line protocol, energy saving and solar power generation. Generally it is a suitable motor for BLDC to move the electrical curtain, because it provides the maintenance without difficulty, long-lived use with good efficiency. On this paper, we proposed the BLDC motor controller designed by CDM(Coefficient Diagram Method) and evaluated its performance with a simulation of the plant, designed the electrical curtain using BLDC motor and powe-line protocol.

• Journal of the Korean Institute of Intelligent Systems
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• v.5 no.1
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• pp.25-32
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• 1995

In this paper, the FLVSC (Fuzzy Logic Variable Structure controller), of which control rules are extracted from the concepts of the VSC(Variable Structure control) is proposed and diesgned for drum motor(BLDC motor) in home VCR. The FLC (Fuzzy Logic Controller) based on linguistic rules has the advantages of not needing of some exact mathermatical model for plant to be controlled. The proposed method has the characteristics which are viewed in conventional VSC, e.g. insensitivity to a class of distrubances, parameter variations and uncertainites in a sliding mode. In addition, the method has the properties of the FLC-noise rejection capability etc. The computer simulation and experiment using DSP(TMS320C30) have been carried out for the servo control of VCR drum motor to show the usefulness of the proposed method.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.763-766
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• 2009

The electrical curtain is an electronic product which is most suitable for the sphere of intelligent home network. It provides the basic feature of intelligent home network such as the followings; various functions, powerful control. It also becomes the ideal technology with inexpensive power-line protocol, energy saving and solar power generation. Generally it is a suitable motor for BLDC to move the electrical curtain, because it provides the maintenance without difficulty, long-lived use with good efficiency. On this paper, we proposed the BLDC motor controller desinged by CDM(Coefficient Diagram Method) and evaluated its performance with a simulation of the plant, designed the electrical curtain using BLDC motor and powe-line protocol.

• Journal of Korea Society of Digital Industry and Information Management
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• v.14 no.4
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• pp.27-33
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• 2018

The recent efforts in academia and industry represent a paradigm shift that will extend the IoT from the home environment so that it is interoperable with the Internet of Vehicles (IoV). IoV is a special kind of IoT. It allows to connect between vehicle and things located in infrastructure. Furthermore, IoV enable to create new intelligent services through collaboration with existing various services such as smart city and connected home. In this paper, we develop a service in order to realize IoV. To this end, we design a novel vehicle service platform which could automatical controlling the IoT device according to drivers' voice. To show practical usability of our proposed platform, we develop a prototype service could be call car-to-thing (C2T). We expect that our proposed platform could eventually contribute to realizing IoV.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.55.1-55
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• 2002

In the era of home automation, we need more context-aware and intelligent service applications than before. For these applications, a service gateway as a platform is required to bridge the gap between external data networks to internal home networks. Also, the sonics gateway enables customers to receive new classes of home services. The OSGi service platform is a good solution for the service gateway since it can deliver new applications dynamically from a broader network. In the near future, every home will be equipped with a residential gateway powered by the OSGi, and will demand value-added service applications, such as home security monitoring and safety alerts. In this pa...

• Journal of Institute of Control, Robotics and Systems
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• v.13 no.6
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• pp.542-546
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• 2007

In the vision of ubiquitous computing environment, smart objects would communicate each other and provide many kinds of information about user and their surroundings in the home. This information enables smart objects to recognize context and to provide active and convenient services to the customers. However in most cases, context-aware services are available only with expert systems. In this paper, we present generalized activity recognition application in the smart home based on a naive Bayesian network(BN) and fuzzy clustering. We quantize continuous sensor data with fuzzy c-means clustering to simplify and reduce BN's conditional probability table size. And we apply mutual information to learn the BN structure efficiently. We show that this system can recognize user activities about 80% accuracy in the web based virtual smart home.