The invention discloses a method for detecting traffic flow information based on a grating array sensing optical fiber network. The method comprises the following steps that S1, grating array sensing optical fibers are laid on each lane of a selected road in the longitudinal direction of the lane; s2, dividing the road surface sensed by the grating array sensing optical fiber into a plurality of road surface units, enabling one road surface unit to correspond to one grating sensing unit, enabling the longitudinal distance between the grating sensing units not to exceed 5m, encoding each grating sensing unit, and establishing a corresponding relation between the road surface units and the grating sensing units; s3, when the vehicle passes by, the grating sensing unit collects a vibration signal generated when the vehicle acts on the road surface unit; and S4, analyzing the extracted vibration signals, analyzing whether each road surface unit has a vehicle or not and an occupied timestamp based on coding corresponding information of a relationship between the grating sensing units and the road surface units, and calculating road traffic flow parameters including flow, speed, density and other information.
本发明公开了一种基于光栅阵列传感光纤网络进行交通流信息检测的方法,包括以下步骤:S1、在选定道路的每个车道上沿车道纵向铺设光栅阵列传感光纤;S2、将光栅阵列传感光纤感知的路面分成多个路面单元,一个路面单元对应一个光栅传感单元,光栅传感单元纵向间距不超过5m,对每个光栅传感单元进行编码,建立路面单元与光栅传感单元之间的对应关系;S3、车辆经过时,光栅传感单元采集车辆作用于路面单元产生的振动信号;S4、对提取的振动信号进行解析,基于光栅传感单元与路面单元关系的编码对应信息,解析每个路面单元是否有车、所占有时间戳,并计算道路交通流参数,包含流量、速度、密度等信息。
Method and system for detecting traffic flow information based on grating array sensing optical fiber network
基于光栅阵列传感光纤网络进行交通流信息检测的方法及系统
2022-03-01
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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