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Regional traffic signal control effect evaluation method based on weighted complex network

A complex network and traffic signal technology, applied in the field of regional traffic signal control effect evaluation based on weighted complex network, can solve problems such as lack of signal control evaluation indicators

Active Publication Date: 2018-12-11
QUANZHOU INST OF EQUIP MFG
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AI Technical Summary

Problems solved by technology

The promulgation of this standard broke the long-term lack of authoritative evaluation indicators for regional traffic signal control. However, most of these indicators are aimed at traffic flow itself, and there is a lack of evaluation indicators that directly serve signal control.

Method used

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  • Regional traffic signal control effect evaluation method based on weighted complex network
  • Regional traffic signal control effect evaluation method based on weighted complex network
  • Regional traffic signal control effect evaluation method based on weighted complex network

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Embodiment Construction

[0036] Such as Figure 1 to Figure 6 As shown, the specific implementation is as follows:

[0037] Step 10, using the weighted complex network to carry out integrated modeling of road traffic conditions and controllable traffic signals using the original method, where intersections are nodes and road sections are edges;

[0038] Each edge has two attributes: traffic load and road section capacity; traffic load is the existing traffic flow on the road section, which represents the "demand" of traffic flow on the road section; road section capacity is the value of road capacity;

[0039] Note that the road network represented by the weighted complex network is G(V,E,W(t)), V is the node set, E is the edge set, W={w k (t)∈(0,1]|k∈E} is the time-varying weight set of edges, where w k (t) is the weight of edge k at time t; the controllable traffic set that directly affects the supply and demand matching of edge k is recorded as S k , side k at time t is in S k The link capacity...

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Abstract

The invention provides a regional traffic signal control effect evaluation method based on a weighted complex network, comprising the following steps of 10, integrally modeling a road traffic condition and a controllable traffic signal by using a primitive law and by using the weighted complex network, wherein an intersection is a node, a road segment is a side, each side has two attributes including a traffic load and a road segment capacity, the traffic load is the existing traffic flow on the road segment and represents the demand of the traffic flow for the road segment, and the road segment capacity is the value of a road traffic capacity; 20, calculating the supply and demand matching degree of the local traffic flow-signal in the road segment in real time so as to obtain the local supply and demand matching degree; and 30, establishing a global supply and demand matching degree by using a complex network analysis method according to the local supply and demand matching degree. The invention provides an evaluation method for dynamically measuring the supply and demand matching degree of the traffic flow-signal, which can be used independently for evaluating a regional (such as a city) traffic signal control effect, and also for providing feedback information for regional traffic signal control.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method for evaluating the control effect of regional traffic signals based on a weighted complex network. Background technique [0002] Urban traffic is a natural complex open giant system. The emerging traffic flow has many complexities such as randomness, time-varying, uncertainty, compositional heterogeneity, and control hysteresis, which brings great challenges to the research on traffic systems. challenge. As one of the development directions to alleviate urban traffic congestion, regional traffic signal control aims to use detectors to perceive regional traffic conditions, and through calculation, analysis and decision-making of control algorithms, and finally change the operation of signal lights at intersections through signal machines, so as to achieve The purpose of regulating traffic flow in an area. [0003] Effect evaluation is an indispensable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/097
CPCG08G1/0137G08G1/097
Inventor 陈松航陈豪王耀宗张丹王森林张景欣
Owner QUANZHOU INST OF EQUIP MFG
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