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교차로 교통사고 자동감지를 위한 사고음의 음향특성 분석
박문수(Park Mun-soo),김재이(Kim Jae-yee),고영권(Go Young Gwon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
Actually, The present traffic accident detection system is subsisting limitation of accurate distinction under the crowded condition at intersection because the system depend upon mainly the image information at intersection and digital image processing techniques nearly all. To complement this insufficiency, this article aims to estimate the level of present technology and a realistic possibility by analyzing the acoustic characteristic of crash sound that we have to investigate for improvement of traffic accident detection rate at intersection. The skid sound of traffic accident is showed the special pattern at 1[㎑]~3[㎑] bandwidth when vehicles are almost never operated in and around intersection. Also, the frequency bandwidth of vehicle crash sound is showed sound pressure difference over 30[㏈] higher than when there is no occurrence of traffic accident below 500[㎐].