Journal of Auto-vehicle Safety Association (자동차안전학회지)

Korean Auto-vehicle Safety Association (한국자동차안전학회)
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Traffic Accident Analysis using Doppler Effect of the Horn

경적음의 도플러 효과를 이용한 교통사고분석

  • 최영수 (대전과학수사연구소 이공학과) ;
  • 김종혁 (국립과학수사연구원 교통과) ;
  • 윤용문 (대전과학수사연구소 이공학과) ;
  • 박종찬 (대전과학수사연구소) ;
  • 박하선 (국립과학수사연구원 교통과)
  • Received : 2020.05.19
  • Accepted : 2020.09.29
  • Published : 2020.12.31
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Abstract

In this study, we estimate the vehicle speed by analyzing the acoustic data recorded in a single microphone of a surveillance camera. The frequency analysis of the acoustic data corrects the Doppler effect, which is a characteristic of the moving sound source, and reflects the geometric relationship according to the location of the sound source and the microphone on the two-dimensional plane. The acoustic data is selected from the horn sound that is mainly observed in an urgent situation among various sound sources that may occur in a traffic accident, and the characteristics of the monotone source are considered. We verified the reliability of the proposed method by time domain acoustic analysis and actual vehicle evaluation. This method is effective and can be used for traffic accident analysis in the blind spot of the camera using a single microphone built into the existing surveillance camera.

Keywords

Acknowledgement

이 논문은 행정안전부 주관 국립과학수사연구원 중장기과학수사감정기법연구개발(R&D)사업의 지원을 받아 수행한 연구임(NFS2020TAA01).

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