Traffic network simulation system

A traffic network and early warning system technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of inability to analyze the two-way flow of urban traffic network, low degree of simulation, etc., and achieve the effect of facilitating information maintenance

Inactive Publication Date: 2015-03-25
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

[0003] In order to overcome the shortcomings that the existing analysis methods and simulation systems cannot analyze the two-way flow of the urban traffic network and the low degree of simulation, the present invention provides a computer software with high simulation, which can not only highly simulate the one-way flow in the traffic network flow, and can highly simulate the bidirectional flow in the traffic road network, and can reflect and pre-evaluate the problems existing in the traffic network

Method used

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Embodiment Construction

[0008] The purpose of patent of the present invention is achieved like this:

[0009] First of all, according to the traffic network map of Nan'an District and the schema in graph theory, the traffic network map used by this software is drawn. Among them, the road sections in the picture are represented by arrow lines, and the intersections or intersection points between two road sections are represented by circles To represent. At the same time, each road section is numbered and stored in the database, which is convenient for computer identification;

[0010] Secondly, through actual measurement, the traffic flow and capacity data of the main road sections in Nan'an District are obtained. Based on these data, MATLAB is called to solve the Beckmann promotional formula of the traffic balance problem in Nan'an District to obtain relevant parameter data. The generated parameters will be passed to the simulation system for the evaluation of the traffic network status. According t...

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Abstract

Provided is software provided with electronic maps of unidirectional-bidirectional road sections and associated data tables, capable of achieving maintenance and query of road section information in map and data table operating modes, adopting a Nan'an district traffic equilibrium problem Beckmann generalization formula to calculate an equilibrium state and reflecting and pre-estimating the problems existing in a Nan'an district traffic network according to a calculation result. In the actual running and evaluation process of the software, actual measurement is conducted on a road section with large traffic flow, selected from a selected Nan'an district area, to obtain the number of passing vehicles in a single lane per hour, then the number is multiplied by lane number to obtain road section traffic capacity information, the actually-measured information is input into the software to perform calculation and conduct pre-estimation on traffic condition, a pre-estimation result highly coincides with an actual investigation result and the result obtained through pre-estimation after the associated road section state information is purely set through the software, and the software is traffic network high-simulation system software.

Description

technical field [0001] The patent of the present invention relates to a traffic network monitoring and early warning system, which is a computer simulation system capable of evaluating and analyzing traffic conditions. technical background [0002] The balanced flow of the urban traffic network reveals the distribution of vehicles on the traffic network under stable conditions, and can well reflect the shortcomings of the traffic network construction and the areas that need to be improved, which has special significance for urban traffic construction. The classic network equilibrium model is mainly suitable for flow analysis of high-speed traffic networks, while the urban traffic environment has the following characteristics: first, there are large differences in road conditions between different roads, and second, there are many intersections and the relationship between roads is complicated. Traditional analysis methods and simulation software cannot reflect the problems e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/30
Inventor 林志杨际祥宋志坚
Owner CHONGQING JIAOTONG UNIVERSITY
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