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센서네트워크에서의 클러스터헤드 기반 라우팅 확정 알고리즘에 관한 연구
정경열(Kyung-Yul Chung),이후락(Hoo-Rock Lee),오진규(Jin-Gyw Oh),최대석(Dae-Seok Choi),김용식(Yong-Sik Kim),이수태(Soo-Tae Lee),류길수(Keel-Soo Rhyu) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
In condition monitoring system for underground electrical distribution networks, applications based on wireless sensor are necessary to maintain the systems efficiently. Therefore, we need suitable routing determination algorithm and it's topology of wireless sensor networks. We assume that end nodes have tiny-power resources but cluster heads are not restricted power condition. In this paper, we present a simple routing determination algorithm for cluster topology and compare our algorithm, based on a cluster heads beacon mechanism, with previous by a discrete-event simulator.
전력기기 집중감시용 고출력 무선센서네트워크 중계노드 개발에 과한 연구
정경열(Kyung-Yul Chung),이후락(Hoo-Rock Lee),장경선(Kyoung-Son Jhang),류길수(Keel-Soo Rhyu) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
In condition surveillance system for electric power equipments, applications based on wireless sensor are necessary to maintain the systems efficiently. Therefore, we need suitable wireless sensor network topology for the electric power equipment surveillance system. We assume that bridge node has enough power resources. In this paper, we present wireless sensor network bridge node for fixed cluster heads environment.
지중배전 열화진단을 위한 무선센서 네트워크에 관한 연구
정경열(Kyung-Yul Chung),이후락(Hoo-Rock Lee),최대석(Dae-Seok Choi),김용식(Yong-Sik Kim),이수태(Soo-Tae Lee),류길수(Keel-Soo Rhyu) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
In this paper, method of a simple wireless sensor network for detecting and locating faults as well as for underground cable monitoring are presented. The main novelty of the concept is in source based routing network characteristics on system level with low power hardware. This method enables the underground electrical distribution system monitoring to be simple.
정경열(Kyung-Yul Chung),이후락(Hoo-Rock Lee),한정은(Jeong-Eun Han),김상열(Sang-Yeol Kim) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
In this study, corona discharge may occurs in power transmission lines and power devices and it could deteriorate that. In the earth, it is solar-blind bandwidth exist. So, It can possible to detecting the corona discharge in day-time through the 230㎚-280㎚ wave length. In this point, we did researching the solar-blind bandwidth camera through the image processing technology.
분산이벤트 기반 센서네트워크 패킷 라우팅 프로토콜 시뮬레이션
정경열(Kyung-Yul Chung),이후락(Hoo-Rock Lee),최대석(Dae-Seok Choi),김용식(Yong-Sik Kim),이수태(Soo-Tae Lee),류길수(Keel-Soo Rhyu) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
Simulation and physical implementation are both valuable tools in evaluating sensor network routing protocols, but neither alone is sufficient. In this paper, we present the implementation and analysis of sensor routing protocols on the discrete-event simulation system that allows existing nesC codes of sensor network routing protocols to be used to create a physical implementation of the same protocol. We have evaluated the Surge function of TinyOS through example implementations in the Ptolemy Ⅱ of the unmodified codes and Direct-diffusion routing protocols using VIPTOS simulation models.
정경열(Kyung-Yul Chung),이후락(Hoo-Rock Lee),최대석(Dae-Seok Choi),하희천(Hee-Cheon Ha) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
The following instructions give you basic guidelines for preparing camera-ready papers for the Journal of the KOSME. We recommend you to use the HWP word processor.
코로나방전 감시를 위한 무선센서네트워크 데이터보안에 관한 연구
정경열(Kyung-yul Chung),이후락(Hoo-rock Lee),박창대(Chang-dae Park),임병주(Byung-ju Lim),장경선(Kyoung-son Jhang),류길수(Keel-soo Rhyu) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
In primary electric facilities, condition monitoring network is a security-sensitive objects. Particularly, wireless sensor network is vulnerable to security so that has been a lot of research proceeds for protect the data and information. In this paper, we have explored techniques of wireless sensor networks data security for the corona discharge monitoring of electric facilities and implemented to select the most suitable things.
고집광 프레넬 렌즈를 이용한 PV receiver raytracing simulation
강성원(Sung-won Kang),이후락(Hoo-Rock Lee),김용식(Yong-sik Kim),박창대(Chang-dae Park),정경열(Kyung-Yul Chung) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
High concentration fresnel lens PV system gives us reduction of solar cell cost and would become more profitable than any other PV system. PV concentrator system will have become one of the most efficient and profitable solar power system in the world market. In this paper we will describe ray tracing simulation with high concentration fresnel lens design. Tilted incident irradiation passing through fresnel lens will influence ray position on PV receiver. We also investigate lightpipe system on pv receiver in order to get uniform light beam profiles.