• Proceedings of the KIPE Conference
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• 2011.07a
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• pp.124-125
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• 2011

현재 지능형 빌딩시스템에 도입되어 있는 스마트 분전반은 스마트 그리드 시스템과 연계하여 전력 수요를 분산시키는 기능 등 다양한 기능을 갖는다. 하지만 예측 불가능한 부하 종류와 운전 패턴에 따른 부하 불평형에 의해 발생하는 전력품질 저하, 전력기기 오작동 등에 능동적인 대처는 역부족이다. 따라서 본 논문에서는 지능형 분전반 운용 알고리즘을 통한 부하관리 시스템을 제안하여 부하 불평형에 따른 피해를 최소화하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.1166-1168
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• 2017

환경 데이터는 현재까지 농업, 해양, 주거 분야에서 다양하게 연구 및 활용되고 있다. 본 논문에서는 단순히 환경 모니터링과 제어에 국한되는 것이 아닌 환경 데이터를 수집하는 저비용 센서 모듈로 각각 다른 실내 공간을 식별하는 모델을 제안하고자 한다. 이를 통해 스마트홈 및 스마트빌딩 분야에서 환경 변화에 따른 맞춤형 서비스를 제공할 수 있을 것으로 기대된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.688-690
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• 2017

RTB (Real-Time Bidding; 실시간 경매 방식)시장이 기하급수적으로 빠른 성장을 보이고 있는 상태에서, 내년 미국 RTB 시장은 200억 달러를 뛰어넘을 것으로 예상되는 가운데, 이러한 상황은 빌딩 내에서 엘리베이터를 기다리는 사람들에게 광고를 노출할 수 있는 새로운 서비스가 될 것이라 생각한다. 대부분의 사람들은 30초에서 길게는 1분이상의 엘리베이터를 기다리면서 스마트폰을 만지며 시간을 보내고 있다. 본 연구팀은 RTB시장에 엘리베이터 탑승객을 연계할 수 있는 스마트 폰 기반 광고 서비스 및 회사 전반적인 업무에 도움 되는 서비스를 제안하고자 한다.[1] 본 연구팀이 진행한 연구는 엘리베이터 사용자의 위치를 바탕으로 개인의 정보를 활용해 그에 맞거나 상응하는 정보를 찾아내 제공하는 서비스에 관한 것이다. 이는 향후 RTB와 연계하여 개인에게 맞춤 광고할 수 기능등의 새로운 수익 창출이 가능할 것으로 예상한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.6368-6375
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• 2015

The goal of this research is to identify the energy planning techniques of Smart Green City and to establish the realized plan through the analysis of Multi-functional Administrative City. For the research, eighteen planning techniques were derived and categorized into three sectors and six basic direction through literature review and Brain-storming analysis considering correlation between three goals of Smart Green City and expectation of planning technique. And Multi-functional Administrative City was analyzed for the current status of application of planning techniques focus on two application aspects. In conclusion, 'Establishing Integrated Management Center for Urban Energy', 'Building Energy Management System', 'Building Automation System', 'Green Transport System', 'Intelligent Transport System', 'Introduction of Eco-friendly Transportation' planning techniques in reduction of building energy consumption sector and green-intelligent transport system sector were identified as important techniques for Smart Green City.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.11
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• pp.2196-2204
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• 2015

Location-based density information of mobile node could be used well in various, new and expanding areas such as location-based services, internet of things, smart grid technologies, and intelligent building. In general, receiving mobile nodes of a wireless mobile node depend on the maximum communication range of transmitting mobile node. In this paper, efficient computing method for mobile node using Delaunay triangulation is proposed, which is irrespective of mobile node's maximum communication range and reflect relative location in a given situation. Proposed method may be good used to find out the density of network constructed by various max communication range devices as Internet of Things. This method suggested in this paper could work well for location-based services, internet of things, smart grid technologies, and intelligent building.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.11
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• pp.1433-1439
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• 2012

This paper introduces a sensor system based on indoor locations in order to implement the Building Energy Management System. This system consists of a thermopile sensor and an ultrasonic sensor. The sensor module is rotated by $360^{\circ}$ and yawed up-and-down by two electric motors. Therefore, it can simultaneously detect the number and location of the inhabitants in the room. It uses wireless technology to communicate with the building manager or the smart-home server, and it can save electric energy by controlling the lighting system or heating/air conditioning equipment automatically. We also demonstrate the usefulness of the proposed system by applying it to a real environment.

• Transactions of the KSME C: Technology and Education
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• v.4 no.1
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• pp.57-62
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• 2016

The Demand Response Market is a nation-wide power and energy management program of electric power demand response operated by KPX (Korea Power eXchange). Therefore, any savings could be determined by KEPCO's AMR(Automatic Meter Reading) data. However, the customers and the service providers participating in the market could not know the real time value due to the 15 minute or even more delayed AMR data communicated. Here, a new concept of a smart box has been introduced and demonstrated to provide the real time saving values compared to the current KEPCO's AMR data approach.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.8057-8063
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• 2015

It is expected that internet of things can be used for various fields such as smart home, smart building and smart city as the representative case of ICT that sensor, communication and interface technologies operate organically and the researches of the technologies regarding internet of things are being carried out in each countries worldwide. However, many problems rise against internet of things continuously in respect of security. Among them, the problem of privacy is the one that should be solved definitely regarding internet of things. If user data does not remain during the process of user authentication, such the privacy problem can be solved. In this paper, we propose the framework of user authentication based on OAuth that is suitable for the environment of internet of things that can solve privacy problem and analyze its security.

• Journal of the Korea Society of Computer and Information
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• v.19 no.10
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• pp.151-158
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• 2014

In this paper, we have designed and implemented the 'N-screen based solar power monitoring system' using N-screen technology by improving the existing monitoring system that can only be accessed or controlled by PC. The HW of the system is consists of solar power modules, inverter, and relay server. And SW is implemented in consideration of the following three points. First, we applied the N-screen technology in order to support various devices. Second, we applied 1:N communication technology that multiple devices can be connected simultaneously to the relay server. Third, we also considered the security problems between server and devices. The final system has been evaluated through the operational test and received good reviews from the technical and economic point. In the future, we are expecting that this technology will replace the existing monitoring systems in various fields, like smart home, smart building, smart city, smart industry, and smart agriculture, etc.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.720-725
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• 2017

This paper evaluated the safety and serviceability of a building structure considering the multi-hazard and proposed TMD-based adaptive smart control system to improve the structural performance. To make multi-hazard loads, an artificial earthquake and artificial wind loads were generated based on representative regions of strong seismicity and strong wind in U.S.A. The safety and serviceability of a 20-story example building structure were investigated using the generated artificial loads. A smart TMD was employed to improve the safety and serviceability of the example structure and its capacity of structural performance improvement was evaluated. The smart TMD was comprised of a MR (magnetorheological) damper. Numerical analysis showed that the example building structure could not satisfy the design limit of safety and serviceability with respect to multi-hazard. The smart TMD effectively reduced the seismic responses associated with the safety and wind-induce responses associated with serviceability.