Urban road online microscopic simulation method and system based on digital twinborn technology

Abstract

The invention discloses an urban road online microscopic simulation method and system based on a digital twinborn technology, and the method comprises the following steps: predicting short-time traffic parameters of uncertain factors, and achieving the segment-by-segment decomposition of a plurality of related traffic signals through the digital twinborn technology and an intelligent segmentation algorithm; analyzing traffic jam judgment and early warning based on correlation; carrying out distribution modeling on dynamic traffic induced by online blockage relief of urban roads through a digital twinborn technology, and establishing a plurality of network partitions based on a congestion associated region discrimination method; and optimizing the urban road traffic guidance strategy considering the parameter prediction uncertainty. According to the invention, the digital twinborn technology can be utilized to provide decision support of a blockage relieving strategy for traffic agencies to manage increasingly complex urban traffic networks, the problem scale of complex network traffic control research can be reduced, the secondary development difficulty of the platform is reduced, and the contradiction generated by diversification of traffic application scenes is solved.

Description

technical field [0001] The invention relates to the technical field of traffic simulation, in particular to an online micro-simulation method and system for urban roads based on digital twin technology. Background technique [0002] Traffic simulation refers to the use of simulation technology to study traffic behavior. It is a technology that tracks and describes changes in traffic movement over time and space. an important application. [0003] With the further development of cities, urban traffic congestion has become an increasingly serious problem faced by countries all over the world, especially developed countries. Traffic microscopic simulation technology provides an effective way to solve urban traffic problems. Through traffic simulation, it can be achieved without changing the existing In the case of transportation infrastructure, a reasonable evaluation of various transportation planning schemes is carried out, and corresponding measures are formulated according...

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Problems solved by technology

[0003] With the further development of cities, urban traffic congestion has become an increasingly serious problem faced by countries all over the world, especially developed countries. Traffic microscopic simulation technology provides an effective way to solve urban traffic problems. Through traffic simulation, it can be achieved without changing the existing In the case of transportation infrastructure, a reasonable evaluation of various transportation planning schemes is carried out, and corresponding measures are formulated according to the evaluation results, so as to achieve the purpose of improving traffic conditions and saving costs. However, the transportation system is a nonlinear system, and a subtle parameter fluctuation All may bring about the "butterfly effect", with strong uncertainty, so many phenomena cannot be studied by deterministic analysis methods, but uncertain analysis methods should be introduced. This analysis method is a dynamic open system, and the model cannot be completely The covered external world is closely connected, and there are correlations and interactions between system parts, internal and external. Offline, solidified, and specific mode-based methods cannot adapt to rapid changes in traffic operations, and more robust online analysis algorithms need to be selected , constantly refresh the model and parameters according to the change of working conditions, the closed nature of the traditional simulation framework is not suitable for the research of online analysis algorithms

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