交通物联网中基于改进Webster方法的单点信号配时研究

doi:10.11959/j.issn.2096-3750.2018.00073

物联网学报 ›› 2018, Vol. 2 ›› Issue (4): 49-55.doi: 10.11959/j.issn.2096-3750.2018.00073

交通物联网中基于改进Webster方法的单点信号配时研究

马琳,陈复扬,姜斌

南京航空航天大学自动化学院，江苏南京211106

修回日期:2018-10-29 出版日期:2018-12-01 发布日期:2019-01-03
作者简介:马琳（1995-），女，南京航空航天大学自动化学院硕士生，主要研究方向为物联网与交通控制。|陈复扬（1967-），男，南京航空航天大学自动化学院教授、博士生导师，主要研究方向为物联网控制及自愈合控制。|姜斌（1966-），男，南京航空航天大学自动化学院教授、博士生导师，主要研究方向为故障诊断与容错控制。
基金资助:
国家自然科学基金资助项目(61473146)

Research on timing method for single intersection in transportation Internet of things based on improved Webster algorithm

Lin MA,Fuyang CHEN,Bin JIANG

College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China

Revised:2018-10-29 Online:2018-12-01 Published:2019-01-03
Supported by:
The National Natural Science Foundation of China(61473146)

摘要/Abstract

摘要：

针对交通物联网中单点定时信号配时问题，将微观层面分析法和宏观层面分析法相结合，提出了一种基于改进Webster方法的配时方案。以饱和度和信控延误为优化目标，建立单点的平均延误模型；针对无信号控制和有信号控制的单交叉口分别建立博弈模型和冲突模型，并进行冲突分析；基于改进Webster方法，额外考虑了机动车通过单点所需最短时间，提出了单点信号配时三步优化方案以减少延误。仿真结果证明了所提方案的有效性。

关键词: Webster, 单交叉口, 信号配时, 冲突分析

Abstract:

Aiming at the timing signal problem of single intersection,a timing method based on the improved Webster algorithm in transportation Internet of things was proposed by combining the micro level analysis method with the macro level analysis method.In order to optimize the saturation and signal control delay,the average delay model was established.The game model and the conflict model were established with non-signal control and signal control.And the conflict analysis was carried out to illustrate that the optimal signal timing could coordinate the conflicting traffic flow.Based on the improved Webster algorithm,the shortest time required for the motor vehicle to pass the single intersection was additionally considered and a three-step optimization method for timing method at single intersection was proposed to reduce the traffic delay to ensure that the vehicle could pass effectively.The simulation results illustrate the effectiveness of the proposed solution.

Key words: Webster, single intersection, signal timing, conflict analysis

中图分类号:

TP273

马琳,陈复扬,姜斌. 交通物联网中基于改进Webster方法的单点信号配时研究[J]. 物联网学报, 2018, 2(4): 49-55.

Lin MA,Fuyang CHEN,Bin JIANG. Research on timing method for single intersection in transportation Internet of things based on improved Webster algorithm[J]. Chinese Journal on Internet of Things, 2018, 2(4): 49-55.

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机动车A	机动车B
机动车A	冒进	礼让
冒进	–a，–a	b，–b
礼让	–b，b	–b，–b

局中人	可选措施					可行局势
机动车A	接受管制	0	1	0	0	1	0	0	1	0
	不接受管制且冒进	0	0	1	0	0	1	0	0	1
机动车B	接受管制	0	0	0	1	1	1	0	0	0
	不接受管制且冒进	0	0	0	0	0	0	1	1	1
可行局势的十进制代码		0	1	2	4	5	6	8	9	10

进口车道		Q_mn/(pcu.h^–1)	HV
西进口	直行	851	5%
	左转	551
	右转	300
东进口	直行	737	5%
	左转	391
	右转	247
北进口	直行	531	7%
	左转	259
	右转	351
南进口	直行	357	6%
	左转	453
	右转	300

阶段	流量比总和Y	相位1/2/3/4/s	最短绿灯时间g_min/s	优化效果		服务水平
阶段	流量比总和Y	相位1/2/3/4/s	最短绿灯时间g_min/s	饱和度	控制延误/s	服务水平
现阶段	1.169 5	30.0/35.0/35.0/30.0	31.0	0.89	67.49	E
近期	0.995 4	31.2/44.2/28.6/26.0	18.5	0.79	68.14	E
中期	0.956 0	32.5/40.8/29.7/27.0	18.5	0.74	61.72	E
远期	0.885 3	25.0/25.8/23.6/21.5	7.9	0.70	43.85	D

交通物联网中基于改进Webster方法的单点信号配时研究

Research on timing method for single intersection in transportation Internet of things based on improved Webster algorithm

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