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- 저자 : 손은호(Eun-Ho Sohn) (검색결과 6 건)
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손은호(Eun-Ho Sohn),박종호(Jong-Ho Park),김영철(Young-Chul Kim),정길도(Kil-To Chong) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
In this paper, we find a robot's path using a Virtual Reality Modeling Language<VRML> and overlay vision. For correct robot's path we describe a method for localizing a mobile robot in its working environment using a vision system and VRML. The robot identifies landmarks in the environment, using image processing and neural network pattern matching techniques, and then its performs self-positioning with a vision system based on a well-known localization algorithm. After the self-positioning procedure, the 2-D scene of the vision is overlaid with the VRML scene. This paper describes how to realize the self-positioning, and shows the overlap between the 2-D and VRML scenes. The method successfully defines a robot's path.
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VRML 영상오버레이기법을 이용한 로봇의 Self-Localization
손은호(Eun-Ho Sohn),권방현(Bang-Hyun Kwon),김영철(Young-Chul Kim),정길도(Kil-To Chong) 대한전기학회 2006 정보 및 제어 심포지엄 논문집 Vol.2006 No.1
Inaccurate localization exposes a robot to many dangerous conditions. It could make a robot be moved to wrong direction or damaged by collision with surrounding obstacles. There are numerous approaches to self-localization, and there are different modalities as well (vision, laser range finders, ultrasonic sonars). Since sensor information is generally uncertain and contains noise, there are many researches to reduce the noise. But, the correctness is limited because most researches are based on statistical approach. The goal of our research is to measure more exact robot location by matching between built VRML 3D model and real vision image. To determine the position of mobile robot, landmark-localization technique has been applied. Landmarks are any detectable structure in the physical environment. Some use vertical lines, others use specially designed markers, In this paper, specially designed markers are used as landmarks. Given known focal length and a single image of three landmarks it is possible to compute the angular separation between the lines of sight of the landmarks. The image-processing and neural network pattern matching techniques are employed to recognize landmarks placed in a robot working environment. After self-localization, the 2D scene of the vision is overlaid with the VRML scene.
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아민기로 관능화된 Poly(glycidyl methacrylate) 다공성 입자를 활용한 수용액 중 불화수소의 제거
이상구(Sang Goo Lee),하종욱(Jong-Wook Ha),박인준(In Jun Park),이수복(Soo-Bok Lee),손은호(Eun-Ho Sohn) 한국고분자학회 2016 폴리머 Vol.40 No.4
아민 화합물로 관능화된 고분자 입자를 합성하고 이를 수용액에 포함되어 있는 불화수소의 제거에 활용하였다. 다공성의 고분자 입자는 glycidyl methacrylate와 trimethylolpropane trimethacrylate 단량체를 톨루엔과 함께 현탁중합하여 제조하였으며 ethylamine을 이용하여 관능화하였다. 불화수소 제거 효율, 흡착평형, 흡착속도 등에 관한 실험을 수행하였으며, 제조된 고분자 입자는 Qe=55 mg/g 이상의 불화수소 흡착 용량을 보였다. 제조된 고분자 입자를 사용하면 acid retardation 효과에 의해 알칼리 금속불화물과 불화수소의 혼합물 수용액으로부터 불화수소를 선택적으로 제거할 수 있어 알칼리 금속불화물의 정제 공정에 적용할 수 있음을 확인하였다. In this study, the amine-functionalized macroporous polymer microspheres are applied to the removal of HF from aqueous solution. Macroporous polymer microspheres were prepared by suspension polymerizations of glycidyl methacrylate and trimethylolpropane trimethacrylate. Toluene was used as a diluent in order to make microspheres porous. These microspheres were functionalized using ethylamine. HF removal efficiency, adsorption equilibrium, and adsorption kinetics were considered experimentally. The resulting polymeric microspheres showed a high capacity for HF removal, more than Qe = 55 mg/g. Finally, the amine-functionalized microspheres were utilized in the purification of metal fluoride via acid retardation.
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아산화질소 생산공정에서 발생하는 아산화질소 함유 배기가스의 배출원
이상구(Sang Goo Lee),하종욱(Jong-Wook Ha),박인준(In Jun Park),김정훈(Jeong-Hoon Kim),손은호(Eun-Ho Sohn),이수복(Soo-Bok Lee) 한국에너지기후변화학회 2018 에너지기후변화학회지 Vol.13 No.1
We examined the manufacturing process of nitrous oxide and investigated the sources of emission gases containing a greenhouse gas of nitrous oxide based on the typical nitrous oxide manufacturing process. The nitrous oxide emissions in the manufacturing processes of nitrous oxide to the atmosphere are mainly divided into the emissions of manufacturing process and the emissions of manufacturing maintenance. The emissions of manufacturing process can be collected, and the nitrous oxide contained in the collected emissions can be separated, recycled and reused. The emissions of manufacturing maintenance can be minimized with optimum maintenance, but cannot be collected. The only one source of nitrous oxide emission of manufacturing process is at the top of flash drum for flash distillation to produce high purity nitrous oxide. According to the simulation of flash distillation, we estimated that the emission gas emitted from the top of flash drum may contain about 92.9% of nitrous oxide, and that about 13.7% of nitrous oxide fed into the flash distillation process may be lost into the atmosphere. To reduce nitrous oxide emission from the manufacturing process of nitrous oxide, the separation technologies of nitrous oxide from the emission gases at the top of flash drum should be developed.
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온실가스 감축 제도 및 아산화질소 감축 배출권 현황과 전망
이상구(Sang Goo Lee),하종욱(Jong-Wook Ha),박인준(In Jun Park),김정훈(Jeong-Hoon Kim),손은호(Eun-Ho Sohn),이수복(Soo-Bok Lee) 한국에너지기후변화학회 2017 에너지기후변화학회지 Vol.12 No.2
The important contents of Kyoto mechanism for greenhouse gas emission reduction, and of Korean Greenhouse Emission Trading System and certification method of offset credits were investigated and summarized. High revenue from the sale of CDM certified emission reduction of nitrous oxide from adipic acid production caused the carbon leakage which could not lead to the substantial emission reduction of nitrous oxide. Therefore, European Commission prohibited the use of the international credit for CDM project of nitrous oxide reduction in adipic acid production in EU ETS as of Jan. 1, 2013. It is prospected that the certificated emission reduction of nitrous oxide in adipic acid production will not be permitted in the future. The CDM certificated emission reduction of nitrous oxide in nitric acid production and caprolactam production will be consistently permitted in the future. Additional certificated emission reduction may not be occurred in domestic nitric acid production and caprolactam production because the certificated emission reductions in all domestic production have been issued. In the future, the technologies for emission reduction in nitrous oxide production and semiconductor and LCD production where nitrous oxide is used as an oxidizer will be expected to be developed and there certified emission reduction will be issued at home and abroad.
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