건설기계 오일진단 기술 특허동향 분석 - 주요 출원인 그룹을 중심으로

In this study, patents for construction machinery oil diagnosis technology were investigated and analyzed to identify related technology development trends. We identified technology trends by country and investigated technologies applicable to construction equipment. This was done by expanding the scope to not only construction equipment manufacturers, but also to automobiles, sensors, oil companies, and research institutes. To this end, domestic and foreign patents for construction machine oil diagnosis technology applied by 2021 were investigated, and patent trends were analyzed through detailed technology classification. Most of the oil diagnosis technologies were previously used to detect degradation using pH, voltage, current, and optical sensors. However, recently, technology that uses image sensors to more accurately detect oil degradation has been applied. In addition, image sensor performance and development of deep learning technology have improved image processing speed and accuracy. Furthermore, oil data transmission and reception and computer calculation technology can improve accuracy and economics by connecting each machine with a central server. It is expected that this paper could raise awareness of oil diagnosis technology for construction machinery and be referred to for future development and research by related researchers.