• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2007년도 춘계학술대회
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• pp.488-493
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• 2007

최근 정보통신 기술의 발전으로 인하여 어느 장소에서든 컴퓨터 또는 무선장치를 사용하여 집안의 지능형 가전기기들을 점검하고 제어 할 수 있는 수준까지 이르렀다. 이와 같은 서비스를 제공하기 위한 요소기술 중에 마이크로소프트사에서 발표한 UPnP(Universal Plug & Play)는 TCP/IP 프로토콜을 기반으로 하여 각 지능형 가전기기에 IP주소를 할당하여 어느 곳에서나 누구나 편리하게 지능형 가전기기의 서비스를 이용할 수 있도록 해준다. 본 논문에서는 UPnP 미들웨어 기반의 홈 네트워크에서 웹 기반의 인터페이스를 통해 지능형 가전기기를 쉽게 관리할 수 있는 홈 게이트웨이와 지능형 가전기기 간 연동 시스템을 설계하고 구현한다.

• 한국태양에너지학회 논문집
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• 제27권4호
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• pp.147-155
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• 2007

It is essential to investigate the structure and the main characteristic of Home USN (Ubiquitous Sensor Network) technologies in built ubiquitous environment while designing future residential space. For this study, three different housing types have been selected to implement ubiquitous technologies for residential space; those are regular, elderly, and single residence units. It is certain that efficiency of ubiquitous home design is improved if main components of each specific housing type are analyzed precisely in digital way and design models are prepared accordingly. Ubiquitous technology, in conclusion, has to be applied not on)r with systematical mechanism or electronic setting but in human-centered atmosphere as well, keeping with deep consideration for bio-housing service factors in eco-friendly surrounding; we call this Ubiquitous Humanism.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2004년도 추계학술발표논문집(상)
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• pp.121-124
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• 2004

유비쿼터스 환경에서 스마트 객체에 부착되는 RFID 태그에는 스마트 객체를 유일하게 식별하기 위한 식별자 만이 저장되고 객체의 상세 정보는 별도의 정보 서버에 분산 저장 및 관리가 된다. 이와 같이 분산되어 있는 정보를 사용하기 위해서는 사용자가 일일이 정보 서버의 위치를 알아 내고, 각 정보 서버로부터 필요한 정보를 얻어 와야 하는 문제가 발생한다. 본 논문에서는 여러 정보 서버에 분산 저장되어 있는 다양한 종류의 객체 정보를 실시간으로 통합하여 사용자에게 제공하고, 또한 객체 정보의 유형 및 특성에 따라 카탈로그 검색, 소유권 변화, 포함 관계 변화, 추적 등의 스마트 객체에 특화된 질의 기능을 제공하기 위한 스마트 객체 정보 통합을 위한 미들웨어의 설계 내용을 소개한다.

• 전기학회논문지
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• 제65권7호
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• pp.1295-1302
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• 2016

In this paper, a black box, which is provided the reliability and user safety of home battery energy storage system connected with solar energy generation, is developed. In the developed scheme, a status and diagnosis data of battery management system, power conditioning system, solar energy generation and grid is measured. This status and diagnosis data is stored and displayed in the developed black box. In addition, this status and diagnosis data is stored and displayed in a monitoring system and a smart phone of user. A performance evaluation of the developed black box is carried out using emulator of home battery energy storage system connected with solar energy generation. Consequently, the developed black box is proved its superiority of the reliability and user safety.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2023년도 춘계학술발표대회
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• pp.101-103
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• 2023

With the recent advances in communication technology and Internet of Things (IoT) infrastructure, home automation systems have emerged as a new paradigm for providing users with convenient smart home services. The IoT ecosystem has merged digital systems with the physical world, dramatically changing the way people live and work. However, at the same time, security remains one of the most significant research issues in IoT, as the deployment and application of high-availability systems come with various security risks that cause serious threats to users. Among them, the security issues arising from the interaction among devices/applications should not be underestimated. Attackers can exploit interactions among devices/applications to hack into the user's home. In this paper, we present a survey of research on detecting various types of interactions among devices/applications in IoT.

• 한국전자파학회논문지
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• 제24권8호
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• pp.831-840
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• 2013

본 논문에서는 주파수의 공동 사용을 위한 서비스 및 그 사회경제적 가치를 분석하였다. 이를 위해 주파수 공동 사용의 개념과 방식을 제시하고, 공동 사용 주파수의 사회경제적 가치분석을 위해 전문가 조사를 실시하였다. 국내에서 이용할 수 있는 1.4~4.5 GHz 대역에서 도출된 910 MHz의 후보 대역별로 적용 가능한 서비스의 경제적 가치와 사회적 파급 효과를 분석하였다. 이 분석 결과를 토대로 공동사용 주파수 대역에 적합한 주파수를 많이 필요로 하는 서비스로서, 이동 통신, WiFi(이동 통신 off-loading 포함), ASA, 공공서비스, M2M, smart home/factory 서비스를 제시하였다.

• 한국실내디자인학회논문집
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• 제26권5호
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• pp.34-41
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• 2017

It is necessary to conduct a basic research on fusion of ighting design or lighting environment to improve the health and quality of life of elderly people. The purpose of this study is to analyze the lighting situation of elderly people 's residential facilities in terms of space environment design plan and to analyze the trends in smart home, design and technology. It is to provide basic data for the prototype of lighting fixtures for elderly people living facilities considering functional, physiological and emotional characteristics. For the study, the target sites were selected and the results of the illumination survey of the target facilities were divided into two types of spaces, residential and other public spaces, and their location, lighting fixtures' type, color temperature, illuminance. The results of the survey showed that the overall physical illumination compared to the recommended illuminance for the elderly satisfied the recommended range and provided the appropriate brightness for the elderly. However, in the application layout of the lighting fixtures, a monotonous arrangement and a lighting fixtures type consisting entirely of simple square type fixtures and downlight types were applied. It would be desirable to use different types of lighting fixtures in the design for various functions, such as making the environment more comfortable. Future research will propose a prototype for the design direction of the subdivided lighting fixtures that classify the space according to functions and understand the vision problem of the elderly while aesthetically.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 춘계학술대회
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• pp.771-772
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• 2011

본 연구에서는 최근 네트워크 기술의 발전으로 가정 내 정보가전기기의 네트워크가 중요해지는 점에 따라 기존의 네트워크 기반의 홈 오토메이션 시스템의 단점을 극복할 HCAS(implementation of house customize automation system based on smart-phone)를 구현하고자 하였다. 기존의 단점으로는 필요한 기능을 사용자에 따라 쉽게 변경하지 못하는 점과 홈 오토메이션 시스템의 높은 비용 등이 있다. 이러한 단점을 보완하기위해 Customize 즉, 사용자의 선택에 따라 제어 가능한 가전기기의 추가 및 제거가 가능한 기능을 구현하였고 ZigBee기술을 사용함으로써 저 전력 무선네트워크를 구현하였다. 그리고 최근의 이슈인 스마트폰을 이용함으로써 기존의 월패드형 이나 리모컨형의 불편한 휴대성을 보완하였고 직관적이며 이미지기반의 사용자 인터페이스는 HCAS의 사용자들이 시스템 제어를 조금 더 편리하고 쉽게 할 수 있게 하였다. 또한 실제로 제작한 모델 하우스에 적용시켜보고 추후의 연구 방향을 제시 하였다.

• Current Optics and Photonics
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• 제1권2호
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• pp.90-94
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• 2017

Visible light identification (VLID) is a user identification system for a door lock application using smartphone that adopts visible light communication (VLC) technology with the objective of high security, small form factor, and cost effectiveness. The user is verified by the identification application program of a smartphone via fingerprint recognition or password entry. If the authentication succeeds, the corresponding encoded visible light signals are transmitted by a light emitting diode (LED) camera flash. Then, only a small size and low cost photodiode as an outdoor interface converts the light signal to the digital data along with a comparator, and runs the authentication process, and releases the lock. VLID can utilize powerful state-of-the-art hardware and software of smartphones. Furthermore, the door lock system is allowed to be easily upgraded with advanced technologies without its modification and replacement. It can be upgraded by just update the software of smartphone application or replacing the smartphone with the latest one. Additionally, wireless connection between a smartphone and a smart home hub is established automatically via Bluetooth for updating the password and controlling the home devices. In this paper, we demonstrate a prototype VLID door lock system that is built up with LEGO blocks, a photodiode, a comparator circuit, Bluetooth module, and FPGA board.

• 대한인간공학회지
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• 제33권6호
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• pp.543-551
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• 2014

Objective: The purpose of this study is to identify visual perception of and satisfaction with the orange peel effect of surface. The orange peel effect is a type of finish on painted or coated surface. Background: Gloss paint sprayed on a smooth surface (such as car body, smart phone, and electric home appliances, etc.) should also dry into a smooth surface. Then, a surface resembling the texture of an orange peel can be caused by some factors. The orange peel effect can degrade user's satisfaction with a product. Method: Visual perception and emotional satisfaction were subjectively evaluated using Likert scale. The significance of orange peel effect on visual perception and satisfaction were then analyzed by the analysis of variance. The correlation between visual perception and satisfaction was also analyzed. Results: Surface roughness significantly influenced visual perception and emotional satisfaction. The level of visual perception increased and emotional satisfaction decreased with the increase of orange peel effect. Emotional satisfaction decreased with the increase of visual perception level. Conclusion: It was identified that orange peel phenomenon on surface was a very important factor for emotional satisfaction. The orange peel effect on the surface of a product should be minimized to improve the emotional satisfaction of the product. Application: The result of this study can be applied to the texture design of the body of a car, smart phones, and electric home appliances, etc.