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基于交叉口多維狀態(tài)評估的信號配時優(yōu)化研究
信息技術(shù)與網(wǎng)絡(luò)安全 6期
倪 茹
(中國科學(xué)技術(shù)大學(xué) 信息科學(xué)技術(shù)學(xué)院,,安徽 合肥 230026)
摘要: 交叉口運(yùn)行狀態(tài)的準(zhǔn)確評估能夠?yàn)榻煌ü芾硐到y(tǒng)提供可量化的交叉口信息,,為優(yōu)化交叉口信號控制提供依據(jù),。針對當(dāng)前交叉口運(yùn)行狀態(tài)評估側(cè)重行車感受,客觀性不強(qiáng),,確定了結(jié)合機(jī)動車和行人需求的多維評估指標(biāo)體系,,利用AHP-變異系數(shù)雙層集成賦權(quán)模型確定各指標(biāo)權(quán)重,得到交叉口運(yùn)行評估模型,?;谠u估模型采用含噪聲的深度Q學(xué)習(xí)(NoisyNet DQN)算法進(jìn)行信號配時優(yōu)化研究。以合肥市某交叉口為例,,基于交通仿真軟件證明了該方法能有效減緩交通擁堵,,提高行人感受,具備較高的應(yīng)用拓展性,。
中圖分類號:U491.2
文獻(xiàn)標(biāo)識碼: A
DOI: 10.19358/j.issn.2096-5133.2022.06.016
引用格式: 倪茹. 基于交叉口多維狀態(tài)評估的信號配時優(yōu)化研究[J].信息技術(shù)與網(wǎng)絡(luò)安全,,2022,41(6):102-108.
Research on signal timing optimization based on intersection multi-dimensional state evaluation
Ni Ru
(School of Information Science and Technology, University of Science and Technology of China, Hefei 230026, China)
Abstract: The accurate evaluation of intersection operation status can provide quantifiable intersection information for traffic management system and provide basis for optimizing intersection signal control. In view of the current intersection operation status evaluation focuses on driving experience and is not objective, this paper determines multi-dimensional evaluation index systems combined with the needs of motor vehicles and pedestrians, and uses the AHP variation coefficient double-layer integrated weighting model to determine the weight of each index, so as to obtain the intersection operation evaluation model. Based on the evaluation model, a NoisyNet deep Q-learning reinforcement learning algorithm is used to optimize the signal timing. Taking an intersection in Hefei as an example, based on traffic simulation software, it is proved that this method can effectively alleviate traffic congestion, improve pedestrian feeling, and has high application expansibility.
Key words : traffic evaluation; indicator system; AHP-coefficient of variation; deep reinforcement learning

0 引言

在城市交通網(wǎng)絡(luò)中,,信號交叉口是削弱道路路網(wǎng)通行能力的“滯點(diǎn)”,,因此交叉口運(yùn)行狀態(tài)評估是城市交通的研究重點(diǎn)。交叉口處交通運(yùn)行狀況十分復(fù)雜,,大部分交通問題均會產(chǎn)生在交叉口處,,如交叉口阻塞嚴(yán)重,交通事故率上升,,車輛通行效率低等,。由此,精確實(shí)時地評估交叉口運(yùn)行狀態(tài),,并將狀態(tài)信息作為城市交通控制管理的指導(dǎo)依據(jù),,相應(yīng)交叉口處的交通流便能得到較好的時空協(xié)調(diào),助力城市路網(wǎng)平穩(wěn)運(yùn)行,,提升市民幸福感,。

國內(nèi)外在交叉口信號控制方面評價交叉口運(yùn)行狀態(tài)的主要指標(biāo)有通行時間、排隊(duì)長度[1],、交通流量,、平均延誤,、平均速度、停車次數(shù),、停車等待時間[2]等,。目前并沒有完整的交叉口運(yùn)行狀態(tài)評估系統(tǒng)是結(jié)合機(jī)動車和行人需求而建立的,無法客觀地判斷交叉口的真實(shí)運(yùn)行效果,,導(dǎo)致實(shí)際工作的實(shí)用性非常受限,。




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作者信息:

倪  茹

(中國科學(xué)技術(shù)大學(xué) 信息科學(xué)技術(shù)學(xué)院,安徽 合肥 230026)




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