- 专利标题: DYNAMIC ROAD TRAFFIC NOISE MAPPING USING DISTRIBUTED FIBER OPTIC SENSING (DFOS) OVER TELECOM NETWORK
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申请号: US17968265申请日: 2022-10-18
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公开(公告)号: US20230125456A1公开(公告)日: 2023-04-27
- 发明人: Yangmin DING , Yue TIAN , Sarper OZHARAR , Ting WANG
- 申请人: NEC Laboratories America, Inc.
- 申请人地址: US NJ Princeton
- 专利权人: NEC Laboratories America, Inc.
- 当前专利权人: NEC Laboratories America, Inc.
- 当前专利权人地址: US NJ Princeton
- 主分类号: G08G1/04
- IPC分类号: G08G1/04 ; G01V1/22 ; G01V1/00 ; G01V1/30 ; G08G1/01
摘要:
Aspects of the present disclosure describe dynamic road traffic noise mapping using DFOS over a telecommunications network that enables mapping of road traffic-induced noise at any observer location. DFOS is used to obtain instant traffic data including vehicle speed, volume, and vehicle types, based on vibration and acoustic signal along the length of a sensing fiber along with location information. A sound pressure level at a point of interest is determined, and traffic data associated with such point is incorporated into a reference noise emission database and a wave propagation theory for total sound pressure level prediction and mapping. Real-time wind speed using DFOS—such as distributed acoustic sensing (DAS)—is obtained to provide sound pressure adjustment due to the wind speed.