Expressway network operation situation on-line deduction thermal startup technique

Abstract

The invention discloses an expressway network operation situation on-line deduction thermal startup technique, which comprises the following content: constructing an expressway network operation situation on-line deduction model based on thermal startup technique, comprising component modules of the expressway network operation situation on-line deduction model, and traffic demand estimation and prediction, consistency check, expressway network structure traffic capacity time-varying information, mesoscopic traffic simulation engine, deduction real-time data archiving, archived data loading, deduction real-time road network operation parameter output and dispatching modules; outputting and keeping data in the expressway network operation situation deduction process; and reading a real-time data file from other data sources. The expressway network operation situation on-line deduction thermal startup technique realizes on-line rapid simulation deduction, and finishes analysis of on-line expressway network operation situations and carries out prediction and deduction on future development situations of an expressway network, thereby providing quick technical and data support for emergency disposal decision for traffic managers.

Description

technical field [0001] The invention relates to a hot start technology for online deduction of expressway network operation situation. Background technique [0002] The operation situation deduction of the expressway network mainly predicts and evaluates the change trend of the operation state of the road network through the method of simulation deduction, and shows the spatio-temporal development process of the operation state of the road network. The current road network operation situation deduction simulation research is mostly based on historical data using mathematical methods to predict and calculate, and then input it into the simulation system to predict the development of the situation. The simulation process requires a longer loading warm-up time. In the case of a large-scale road network, the simulation requires a longer loading warm-up time to ensure that the time period used for analysis is not much different from the actual situation. In addition, in most cur...

AI Technical Summary

Problems solved by technology

That is, how to quickly load the hot start technology at the beginning of the simulation to meet the needs of the road network operation manager for rapid evaluation and prediction of real-time operation. Currently, the existing technology is considering the dynamic update of real-time data and the dynamic input of various emergencies In the case of impact on the road network, etc., on the basis of medium and macro traffic flow deduction simulations, functions such as hot start of simulation deduction cannot be realized, including real-time data access, real-time state preservation, and fast loading of historical states, etc.

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