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Non-signalized crossing optimization control method and system in cooperative vehicle infrastructure environment

A vehicle-road coordination and optimal control technology, applied in the field of intelligent transportation, can solve problems such as palliatives but not root causes

Active Publication Date: 2015-05-20
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional solution to the problem of traffic congestion at intersections is to build new roads or widen the width of existing roads. However, considering the investment budget of the entire urban traffic and the limited and scarce urban space and resources, this kind of palliative Non-curative solutions are not advisable
[0004] At present, there is no plan to use CVIS to optimize traffic control at road intersections

Method used

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  • Non-signalized crossing optimization control method and system in cooperative vehicle infrastructure environment
  • Non-signalized crossing optimization control method and system in cooperative vehicle infrastructure environment
  • Non-signalized crossing optimization control method and system in cooperative vehicle infrastructure environment

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Embodiment 1

[0077] The embodiment of the present invention aims at the deficiencies of the existing technology, adopts the characteristics of CVIS information interaction, and uses the roadside equipment to collect real-time vehicle operation status information on the road network and send it to the control center. The optimized right-of-way information and speed guidance information are fed back to the vehicle nodes at the intersection to guide drivers to drive according to the right-of-way and speed guidance information so that they can safely pass through the intersection.

[0078] This embodiment provides a schematic diagram of an application scenario of an optimal control method for unsignalized intersections in a vehicle-road collaborative environment. figure 1 As shown, the schematic diagram of the realization principle of the method is shown in figure 2 As shown, the specific processing flow is as follows image 3 As shown, the following processing steps are included:

[0079] ...

Embodiment 2

[0119] This embodiment provides an optimal control system for unsignalized intersections in a vehicle-road coordination environment. This system can be integrated in CVIS, and its specific implementation structure is as follows: Figure 4 As shown, specifically, the following modules may be included: an on-board unit 41, a roadside device 42 and a roadside management device 43;

[0120] The on-board unit 41 is configured to send the driving state information of the vehicle to the roadside equipment, the driving state information including the speed and position of the vehicle;

[0121] The roadside device 42 is used to send the driving state information sent by each vehicle-mounted unit to the roadside management device; send the right of way information and vehicle speed guidance information sent by the roadside management device to the corresponding vehicle ;

[0122] The roadside management device 43 is used to calculate the right-of-way information and vehicle speed guida...

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Abstract

The embodiment of the invention provides a non-signalized crossing optimization control method and system in cooperative vehicle infrastructure environment. The method comprises the following steps that roadside equipment sends driving state information sent by each vehicle-mounted unit to roadside management equipment; the roadside management equipment calculates road right information and vehicle speed guide information of each vehicle by using a preset crossing signal optimization model according to the driving state information of each vehicle passing through a crossing, in addition, the road right information and the vehicle speed guide information are sent to the roadside equipment, and the roadside equipment sends the road right information and the vehicle speed guide information to corresponding vehicles. The method and the system provided by the embodiment of the invention have the advantages that the road right information and the vehicle speed guide information of each vehicle are calculated according to the preset crossing signal optimization model and the optimized green light time based on a sliding time window T, the real-time interactive guide control with vehicle individuals is realized, and the vehicles at the crossing are subjected to speed optimization guide, so that the intelligent traffic control efficiency of the crossing is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method and system for optimal control of unsignalized intersections in a vehicle-road coordination environment. Background technique [0002] In recent years, with the development of technologies such as wireless communication, automatic control, and sensor detection, CVIS (Cooperative Vehicle Infrastructure System) has gradually emerged and become a research hotspot in the field of intelligent transportation. CVIS refers to the acquisition of vehicle and road information based on wireless communication, sensor detection and other technologies, information interaction and sharing through vehicle-vehicle and vehicle-road communication, to realize intelligent coordination and cooperation between vehicles and infrastructure, and to optimize the use of system resources , Improving road traffic safety and alleviating traffic congestion. CVIS can comprehensively o...

Claims

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Application Information

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IPC IPC(8): G08G1/07
Inventor 上官伟蔡伯根王剑刘江郑子茹崔晓丹
Owner BEIJING JIAOTONG UNIV
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