交通运输系统工程与信息

交通运输系统工程与信息 ›› 2014, Vol. 14 ›› Issue (1): 215-220.

• 系统工程理论与方法 • 上一篇    下一篇

平面道路交叉口交通流波动特性分析

王志刚，石 琴*，王楠楠，丁建勋   

  1. 合肥工业大学 交通运输工程学院，合肥 230009
  • 收稿日期:2013-05-21 修回日期:2013-08-26 出版日期:2014-02-25 发布日期:2014-07-07
  • 作者简介:王志刚（1988-），男，安徽池州人，硕士生.
  • 基金资助:

    国家自然科学基金（71071044）；国家自然科学基金青年基金项（71201041）；安徽省软科学计划研究项目（12020503062）；教育部高等学校博士点新教师基金项目（20110111120023）；外专千人计划(WQ20123400070)

Traffic Oscillation Properties on Roads Intersection

WANG Zhi-gang,SHI Qin，WANG Nan-nan，DING Jian-xun   

  1. School of transportation Engineering, Hefei University of Technology, Hefei 230009,China
  • Received:2013-05-21 Revised:2013-08-26 Online:2014-02-25 Published:2014-07-07

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被引次数

5

摘要：

为了研究平面道路交叉口区域交通流的波动特性，本文从频域的角度出发将交叉口区域交通流的波动划分为低频、中频和高频三种频率范围内的信号.研究分析发现，一般低频趋势信号可由交通需求变化引起的行驶工况缓慢变化；高频噪声信号由驾驶行为等随机扰动引起；中频波动信号由行驶过程中不断加速减速引起.由此提出了用去趋势波动分析法消除交通流信号的低频趋势，用小波分析方法将采集的数据中的高频噪声部分消除，在此基础上用频谱分析理论研究交叉口区域不同位置的波动特性.结果表明，波动最明显的位置在停车线附近.

关键词: 交通工程； 波动特性分析； 频谱分析, 平面交叉口； 去趋势波动分析； 小波分析

Abstract:

This paper investigates traffic oscillation properties on roads intersection from frequency-domain perspective. According to the traffic oscillation characteristics on the roads intersection, a data sequence from the detector is the superposition of three sets of sinusoidal components, representing high-frequency noise, low-frequency trend and mid-range oscillations. The analysis found that the low-frequency signal relates to the changes of driving cycle generated by varying traffic demand, the high-frequency noise relates to the local random perturbations like driving behavior, and the mid-range oscillations relate to the frequently accelerating-decelerating operations in the driving cycles. So it proposes a de-trended fluctuation analysis to eliminate low-frequency velocity data trend, and use the Wavelet analysis method to eliminate high-frequency noise, and then apply the Frequency Analysis to study the wave characteristics for traffic stream on the different locations. The results show that the obviously wave at near the roads intersection.

Key words: traffic engineering, oscillation properties analysis, spectral analysis, intersection, De-trended fluctuation analysis, wavelet analysis

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