分布式光纤传感技术在城市快速路的应用研究
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摘 要 针对传统道路交通信息采集通常采用点式检测器，提出了一种分布式光纤传感技术在道路信息采集中的应用。基于分布式光纤传感技术在道路上实时采集的光纤振动量，进行数据分析和处理，构建车速和流量模型，通过实例验证，车速准确率达到83.2%，基本符合实际交通情况。通过多元拟合回归，建立重型车、中型车以及小型车的流量和光纤振动量的数学模型，交通流量准确率达到79.4%，效果显著。分布式光纤传感技术能够把传感光纤作为检测源支撑交通应用。
关键词 分布式光纤传感技术；光纤振动；交通流量；多元拟合回归
Abstract In view of the traditional road traffic information collection usually adopts point detector， this paper proposes a distributed optical fiber sensing technology in the application of road information acquisition. Based on distributed optical fiber sensing technology， the optical fiber vibration is collected in real time. By analyzing and processing data， building the vehicle speed and flow model， the speed accuracy is up to 83.2% verified with examples， which is basically in line with the actual traffic condition. By means of multivariate regression， a mathematical model of the optical fiber vibration and traffic volume of heavy vehicles， medium-sized vehicles and small vehicles is established and the accuracy of traffic flow is up to 79.4%. The distributed optical fiber sensing technology can be used as the detection source to support transportation applications.
Key words Distributed optical fiber sensing technology； Optical fiber vibration； Traffic flow； Multivariate regression
前言
智能交通需要前端設备进行感知，常规感知手段包含线圈车检器、微波、地磁等检测器，往往根据布设位置集中于某一点，检测范围、粒度受到影响，...
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