| 주행 차량의 엔진음을 이용한 속력 분석 | |
|---|---|
| Year | 2022 |
| Month | |
| Journal | 2022 / 한국자동차공학회논문집 vol. 30, no. 2, pp. 91-98 |
| Author | 최영수, 공승현 |
| File |
주행 차량의 엔진음을 이용한 속력 분석.pdf
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DATE : 2022-04-12 16:45:59
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traffic accident. Recently, vehicle speed analysis methods, based on acoustic data from cameras, have been studied to overcome the limitation of image data due to blind spots and environmental conditions. In this paper, we proposed a speed analysis technique based on external noise and the Doppler effect generated by a moving vehicle. In particular, the frequency of vehicle engine sound was analyzed by using STFT, and the speed of the vehicle with respect to time was estimated by correcting the two-dimensional Doppler effect. Finally, the reliability of the proposed method was verified through acoustic simulation by using Matlab and actual vehicle evaluation by using acoustic data from dashboard cameras. Therefore, the proposed technique that utilizes acoustic data from cameras under limited conditions could estimate the speed of the vehicle in an accident. |
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