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특허의 토픽 진화분석을 통한 에너지 하베스팅 기술 발전 경로 추적
김유성 ( Kim Yuseong ),최재웅 ( Choi Jaewoong ),윤장혁 ( Yoon Janghyeok ) 한국지식재산연구원 2021 지식재산연구 Vol.16 No.1
Energy Harvesting technology, which converts ambient energy present in the environment into usable power forms, has received steady attention under environmental and technical necessity. Few existing prior studies have focused on specific technical energy support or conversion methods, dealing with limited technical trends. This study analyzes the overall development trend based on a large amount of patent data. This study quantitatively addresses the development pathways over time through a patent information-based topic evolution analysis. This study defines detailed technical elements by applying topical modeling to the text of collected patents. Next, the connection between technology elements is quantified using inventor, citation, and classification information. The emerging time points of each technology element are defined based on forward citation information, and a technology evolution map is generated. The technology evolution map shows that various detailed technical elements emerge, interact, and develop over time. The analysis results showed that technologies on ambient energy and efficient conversion method were active in the beginning, and application technologies in other areas were recently conducted. Through the analysis results, it is expected that researchers and policy makers in related academia understand the trends in Energy Harvesting technology and monitor the latest development trends.