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이승익,서범수,김중배,Lee, S.I.,Seo, B.S.,Kim, J.B. 한국전자통신연구원 2007 전자통신동향분석 Vol.22 No.2
본 고에서는 지능형 서비스 로봇에 적용되고 있는 기존의 로봇 제어구조에 대한 기술동향을 살펴보고, 가정환경에서 로봇이 적절한 정보를 획득하고, 이를 환경 내의 다른 장치나 가전도구와 연동할 수 있도록 하기 위한 환경 구축 방안과 로봇 내부의 제어구조 및 다양한 서비스를 제공하기 위한 서버와의 통신 문제 등에 대하여 살펴본다. 로봇이 가정 내에서 다양한 서비스를 제공하기 위해서는 가정 환경과의 적절한 상호작용은 필수적이다. 이를 위해서는 가정의 다양한 기기들과의 적절한 정보 교환이 필요하고, 이러한 정보를 효율적으로 이용할 수 있는 환경의 구축이 필수적이다. 또한, 로봇 내부적으로도 다양한 서비스를 제공하기 위한 적절한 제어구조가 필요하며, 경우에 따라서는 로봇 외부의 서버와의 협업을 통한 질높은 서비스의 제공이 지능형 서비스 로봇의 성공에 필수적인 조건이라 할 수 있다. 본 고에서 제안된 로봇 제어구조는 2006년 10월부터 시작된 URC 로봇 시범사업에 적용되어 현재 시범운용중에 있다.
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김재홍,서범수,조재일,최정단,Kim, J.H.,Seo, B.S.,Cho, J.I.,Choi, J.D. 한국전자통신연구원 2021 전자통신동향분석 Vol.36 No.1
This article presents the future vision and core technologies of the "Life Companion Robot," which is one of the 12 future concepts introduced in the ETRI Technology Roadmap published in November 2020. Assistant robots, care robots, and life support robots were proposed as the development stages of life companion robots. Further, core technologies for each of the ten major roles that must be directly or indirectly performed by life companion robots are introduced. Finally, this article describes in detail three major artificial intelligence technologies for autonomous robots.
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에어컨 시스템 내 냉매 분배기의 2상 냉매 분배 특성에 대한 수치해석적 연구
박성훈(S.H. Park),허남건(N. Hur),서범수(B.S. Seo) 한국전산유체공학회 2013 한국전산유체공학회 학술대회논문집 Vol.2013 No.5
To improve the efficiency of heat transfer in cooling and heating systems, an efficient distribution of refrigerant is required. Especially, the performance of heat exchanger with the two-phase refrigerant is closely related with the splitting characteristics of refrigerant. In the present study, the splitting characteristic of two-phase refrigerant inside a distributor was numerically predicted by using an Eulerian method. For the prediction of pressure drop in several downstream tubes, the pressure boundary conditions based on the Lockhart and Martinelli method was applied to the outlet boundary of numerical model. With these numerical methodologies, splitting characteristic of two-phase refrigerant was predicted for various conditions. In this way, numerical results were in good agreement with experimental data. From the results, it was observed that the splitting characteristics of two-phase refrigerant are determined by the geometric factors of distributor. With the numerical results of splitting characteristics in the distributor with various geometric parameters, the optimized geometry of distributor was obtained for the uniform split of refrigerant.
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이상근,김형섭,강범수,서금석,박성수,박희찬,Lee, S.G.,Kim, H.S.,Kang, B.S.,Seo, G.S.,Park, S.S.,Park, H.C. 한국재료학회 2006 한국재료학회지 Vol.16 No.6
Fine silica powders were synthesized via w/o emulsion method using sodium silicate, ammonium sulfate, Triton N-57, and cyclohexane as silica source, precipitating agent, surfactant, and oil phase, respectively. The powders were prepared under a conventional process and an ultrasonic process using the same reactants at room temperature for 1 hr varying the concentration of $Na_2SiO_3$ solution and the mol ratio of $H_2O$/surfactant, respectively. The particle size of the silica powder was reduced with decreasing the concentration of sodium silicate solution and with increasing the mol ratio of $H_2O$/surfactant under with and without ultrasounds. The size of powder with ultrasounds was smaller than that without ultrasounds, which indicates that the application of ultrasound in the synthesis of silica powder is an efficient way to reduce particle size.
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최정단,민경욱,김재홍,서범수,김도현,유대승,조재일,Choi, J.D.,Min, K.W.,Kim, J.H.,Seo, B.S.,Kim, D.H.,Yoo, D.S.,Cho, J.I. 한국전자통신연구원 2021 전자통신동향분석 Vol.36 No.1
In this thesis, we examine the development status of autonomous mobility services using various artificial intelligence algorithms and propose a solution by combining edge and cloud computing to overcome technical difficulties. A fully autonomous vehicle with enhanced safety and ethics can be implemented using the proposed solution. In addition, for the future of 2035, we present a new concept that enables two- and three-dimensional movement via cooperation between ecofriendly, low-noise, and modular fully autonomous vehicles. The zero-error autonomous driving system will safely and conveniently transport people, goods, and services without time and space constraints and contribute to the autonomous mobility services that are free from movement in connection with various mobility.
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