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Safe Wireless Power Transmission Using Low Leakage 2D-Communication Sheet
Akihito Noda,Hiroyuki Shinoda 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, we present a new type of coupler which is applicable to low leakage two-dimensional communication (2DC) sheets. Our 2DC system can transfer signals and powers simultaneously by using microwaves which travels in a two-dimensional medium. The goal of this paper is supplying 1 W/cm power through the sheet safely. In this paper, the safeness is evaluated in terms of localized specific absorption rate (SAR), according to the International Commission on Non-Ionizing Radiation Protection (ICNIRP) Safety Guidelines. First of all, a low leakage 2DC sheet that satisfies above criteria is designed. Next, it is clarified that the problem is the conventional 2DC power transmission coupler cannot extract enough power from the low leakage sheet. As an alternative to the conventional coupler, we propose a coupler which has a capacitive reactance layer on its surface. Finally we present a measurement result which indicates that proposed system can transfer 0.54 W/cm power safely.
Networked high-speed vision for evasive maneuver assist
Masahiro Hirano,Akihito Noda,Masatoshi Ishikawa,Yuji Yamakawa 한국통신학회 2017 ICT Express Vol.3 No.4
We propose a framework for evasive maneuver assist using an array of high-speed cameras capable of communicating with each other via a network, called networked high-speed vision. The system has a wide field-of-view and high responsiveness, enabling vehicles to receive information about potential dangers immediately after it appears around them, thus allowing them to perform evasive maneuvering as quickly as possible. We demonstrated the effectiveness of the proposed system in a typical scenario in which evasive maneuvering is performed. Experiments with a robotic car platform and simulations showed that the proposed system outperformed a system composed of a video-rate camera.