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정사각뿔의 면적비를 이용한 로봇의 자기위치인식에 관한 연구
배기덕(Gi Deok Bae),김동환(Dong Hwan Kim) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
In this study, we suggested a position recognition method for a robot by introducing the area ratio formed by a regular fourside pyramid image captured by a camera. The pyramid is suspended from the center of ceiling. Whenever the position of the robot is changed, the area ratio must change, which determines the robot location. Using image process technique, the area ratio was captured, later being adopted to the proposed equations to determine the current robot location. The proposed method was applied to the real robot using experiments, yielding the desirable performance.
이중화 자동복구 보안기능이 구비된 배전반의 보안성 평가를 위한 테스트베드 구성에 대한 고찰
최형석(Hyeong-Seok Choi),진창기(Chang-Gi Jin),배기덕(Gi-Deok Bae) 한국조명·전기설비학회 2012 조명·전기설비학회논문지 Vol.26 No.7
Sub-station, key equipment in electric power infrastructure, are being exposed to increasing risk of hacking. For this, soft redundancy sub-station system needs to be formulated with automatic restoration mechanism. For this it is important to assess the reliability of the applicable range of data that are used in actual system operation, as well as the methods and findings of the tests. At the same time performance of soft redundancy system and total security mechanism, which are aligned for the protection of the sub-station, need to be tested. For testing the above-mentioned, this paper presented a viable formation of a soft redundancy practical VPN system within a panel to protect the latter from hacking or cracking incidences, and conducts a test to check if the considered system actually serves the protection function in the actual operation setting, gathering evidence from the data from the testing of the actual performance of the system as well as of emergency scenario simulation operations. Because tested soft-redundancy & restorative sub-station system is expected to be widely applicable for various cases such as Smart-grid or electricity IT system, where VPN with enhanced level of security is required.