基于RFID的城市路网OD矩阵获取方法及时空特性分析

A method for estimating OD Matrix of Urban Road Network using RFID and Analysisof its Spatio-temporal Features

为适应现代化城市交通管理对起讫点(origin-destination,OD)矩阵获取提出的要求,提出一种基于无限射频识别技术(RFID)的城市道路机动车OD矩阵获取方法。方法以设置在路网中的RFID基站作为机动车出行的起讫点,基于数据挖掘技术,对不同汇集度内通过起讫点的RFID车牌数据进行匹配,获取出行量数据并汇总得到OD矩阵。应用该方法对南京市某路网进行试验,获取并分析了OD出行矩阵的时间和空间特性。结果表明,提出的方法可获取任意给定时间汇集度下的OD矩阵,且获取的矩阵在时空特性趋势上符合实际交通状况,表明了所提出的OD矩阵获取方法的有效性。

In order to meet data requirement of modern urban traffic management systems,an acquisition technique for origin-destination（OD）matrix based on the radio frequency identification technology（RFID）is proposed.This paper takes RFID base stations installed along urban road network as origins and destinations,license plate data collected at origins and destinations through RFID is matched using a set of data mining techniques,under different aggregate time resolutions.Based on this technique,a sample of road network extracted from City of Nanjing is selected as the case study,its OD data is collected,OD matrix is developed and its spatio-temporal features are analyzed.Empirical results show that the proposed technique is able to obtain the OD matrix under any aggregate time resolution,and the spatio-temporal features of the obtained matrices are consistent with observed traffic conditions.The proposed technique shows an excellent timeliness and operability,providing an important data tool for urban transportation management.