Emergency vehicle guidance method in vehicle-road cooperation environment

A technology of emergency vehicles and vehicle-road coordination, applied in the field of intelligent transportation, to achieve the effect of higher safety, increased vehicle traffic capacity, and simple principles

Active Publication Date: 2021-01-12
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Considering the two aspects of intersection signal priority control and path guidance, a path guidance strategy for emergency vehicles is established, which reflects the signal priority of emergency vehicles at intersections and improves the res

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  • Emergency vehicle guidance method in vehicle-road cooperation environment
  • Emergency vehicle guidance method in vehicle-road cooperation environment
  • Emergency vehicle guidance method in vehicle-road cooperation environment

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[0044]The present invention will be further described in detail below with reference to the drawings and specific embodiments of the specification.

[0045]Such asfigure 1 As shown, an emergency vehicle guidance method in a vehicle-road collaborative environment of the present invention includes the following steps:

[0046]Step S1: Delineate the emergency vehicle path search space in the road network to construct a dynamic traffic road network;

[0047]Step S2: Obtain a priority request for emergency vehicles;

[0048]Step S3: Determine a set of path planning alternatives;

[0049]Step S4: Build a two-level programming model; such asfigure 1 withfigure 2 As shown, according to the road network, a two-level planning model is established to plan the emergency optimal path; the upper layer is the optimization problem of the emergency lane layout position and the optimal path of the emergency vehicle, which is designed as a multi-objective optimization model, and the goals include the emergency vehic...

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Abstract

The invention discloses an emergency vehicle guidance method in a vehicle-road cooperation environment, and the method comprises the steps: S1, delineating an emergency vehicle path search space in aroad network, and constructing a dynamic traffic road network; S2, acquiring an emergency vehicle priority pass request; S3, determining a path planning alternative scheme set; S4, constructing a double-layer planning model, wherein the upper layer is optimization of emergency lane layout positions and emergency vehicle optimal paths, a multi-objective optimization model is adopted, and the lowerlayer is road network multi-user traffic balance flow distribution so as to achieve network balance; S5, solving the model by using a genetic algorithm, solving an upper-layer model of the double-layer emergency path planning model by adopting a genetic algorithm, and solving a lower-layer model by embedding an FW algorithm into the model; S6, generating an optimal scheme for optimizing the combination of the emergency lane and the path planning. The method has the advantages of simple principle, wide applicability, good practicability and the like.

Description

technical field [0001] The invention mainly relates to the technical field of intelligent transportation, in particular to an emergency vehicle induction method in a vehicle-road collaborative environment. Background technique [0002] Due to the serious problem of urban traffic congestion, the lack of awareness of avoidance of social vehicles and the lack of emergency lanes, emergency vehicles usually drive behind social vehicles and cannot reach the accident point at the first time. Therefore, it is necessary to take a series of measures to induce emergency vehicles to drive and improve traffic efficiency. [0003] At present, with the rise of electronic maps such as Baidu and AutoNavi, electronic maps have the characteristics of fast, convenient, and accurate positioning in dynamic vehicle navigation, finding target buildings and parking lots, etc. Its high-precision positioning is helpful for the induction of emergency vehicles. However, for using Baidu and Gaode map to...

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Application Information

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IPC IPC(8): G08G1/087
CPCG08G1/087
Inventor 龙科军武思嘉谷健吴伟何石坚魏隽君刘洋
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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