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진광자(Gwang-Ja Jin),최유희(You-Hee Choi),이좌형(Joa-Hyung Lee),장병태(Byung-Tae Jang) (사)한국CDE학회 2014 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2014 No.2
A Development Project on Predictive maintenance system for the integrated and intelligent operation of offshore plant which is one of the R&DB projects sponsored by MOTIE (Ministry of Trade, Industry & Energy) has a goal to develop three systems: SCADA(Supervisory Control and Data Acquisition) system and predictive maintenance system of offshore plant, and management system of virtual offshore plant. Performance analysis and monitoring system on single equipment based on platform Independent model for offshore plant which is developed within SCADA system has functions such as analyzing and monitoring sensing data from major equipment such as compressors of topside facilities in offshore plant through DCS (Distributed Control System), and providing the analyzed and statistical data to operators by auditory and visual means. This system would be designed with PIM (Platform Independent Model) and PSM (Platform Specific Model) schemes. From this, it has some advantages of being shorten the development time and applying easy to various oil wells, facilities and equipment and/or various models, which is not restricted to a particular oil well, facility, equipment or model.
센서 네트워크에서 에너지 효율성을 고려한 트리 라우팅 프로토콜
황소영(Soyoung Hwang),진광자(Gwang-Ja Jin),신창섭(Changsub Shin),김봉수(Bongsoo Kim) 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.8B
에너지 효율성과 신뢰성을 설계의 기본 요소로 하여 센서 네트워크를 위한 다양한 라우팅 프로토콜이 제시되었다. 본 논문은 무선 센서 네트워크에서 에너지 효율성을 고려한 트리 라우팅 방법에 관한 것이다. 제안한 기법은 데이터 전달 경로를 노드의 에너지 잔량을 고려하여 선정하게 함으로써 노드의 에너지 소진을 분산시켜 네트워크의 수명을 향상시키고, 상위 부모 노드로 데이터 전달에 실패하였을 경우 우회할 수 있는 후보 부모 정보에서 새로운 부모를 선택하여 데이터를 전달함으로써 데이터 전달의 신뢰성을 제공한다. 제안한 기법의 성능을 분석하기 위해 PARSEC 기반 시뮬레이션 환경을 구성하여 기존의 트리 라우팅과 성능을 비교하였으며, 제안한 기법이 트리 라우팅에 비해 네트워크 수명에 있어 23.5% 개선된 결과를 보인다. Many routing protocols have been proposed for sensor networks where energy awareness and reliability are essential design issues. This paper proposes an Energy-aware Tree Routing Protocol (ETRP) for Wireless Sensor Networks. The proposed scheme relates to reliable and energy efficient data routing by selecting a data transmission path in consideration of residual energy at each node to disperse energy consumption across the networks and reliably transmit the data through a detour path when there is link or node failure. Simulation results show that the proposed method outperformed traditional Tree Routing (TR) by 23.5% in network lifetime.
Optical flow를 이용한 영상의 흔들림 보정 알고리듬 개발
조경래(Gyeong-Rae Cho),도덕희(Deog-Hee Doh),김홍엽(Hong-Yeob Kim),진광자(Gwang-Ja Jin),김도현(Do-Hyun Kim) 한국가시화정보학회 2019 한국가시화정보학회지 Vol.17 No.3
An image compensating algorithm with high-vibration movement is proposed, using optical flow and the Kalman Filter. The temporal motion vector field is calculated by Optical flow and suspicious vectors are removed or adjusted by the Gaussian interpolation method. The high-vibrated vector filled is stabilized by the Kalman filter. Lastly, compensated images are obtained by affine transformation. This proposed algorithm gives good compensated video images on high-vibration situations.