Construction method for integrated dynamic traffic simulation platform of city

A traffic simulation and simulation platform technology, applied in the field of virtual simulation, can solve problems such as limited model flexibility and description ability, unsuitability for large-scale road network simulation, and insufficient simulation accuracy of key nodes, so as to reduce repetitive modeling work and Waste of data resources, strong path analysis function, and the effect of reducing manual participation

Active Publication Date: 2015-08-26
广州市交通规划研究院有限公司
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Problems solved by technology

Among them, the macroscopic model can analyze and reproduce the macroscopic characteristics of traffic flow, which is suitable for large-scale static analysis of road networks, but the flexibility and description ability of the model are relatively limited; the mesoscopic model can approximately describe the behavior of vehicles such as lane changes, It is suitable for the dynamic analysis of large and medium-sized road networks, but the simulation accuracy of the model for key nodes is insufficient; the microscopic model can describe the driving behavior and interaction of each vehicle in the traffic system in detail, but its computing speed and memory requirements are not as fast as the vehicle increase with the increase of the number, it is not suitable for large-scale road network simulation
The three simulation ...

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  • Construction method for integrated dynamic traffic simulation platform of city
  • Construction method for integrated dynamic traffic simulation platform of city
  • Construction method for integrated dynamic traffic simulation platform of city

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no. 1 example

[0105] The specific implementation steps of a construction method of an integrated urban dynamic traffic simulation platform in this embodiment are as follows:

[0106] Step 1: Combining the city's GIS data, Internet aerial photos and street view maps to draw the city's traffic simulation road network, where the road network includes the city's entry and exit passages, urban expressways, main and secondary arterial roads and some branch roads, etc. The simulated road network of the embodiment needs to be detailed to the lanes and turns of each road section and intersection (including the channelization of the intersection, the traffic organization scheme of the road section and the intersection, etc.).

[0107] Step 2: Combining the data of the city's land use, population, and employment, the city is divided into traffic areas. The divided traffic areas should conform to the characteristics of residents' traffic trips; then establish the centroid points of each traffic area in ...

no. 2 example

[0142] Taking Guangzhou City as an example, adopt the method of the present invention to establish such as in TransModeler simulation software Figure 11 The specific process of the integrated dynamic traffic simulation platform based on multi-source heterogeneous data is as follows:

[0143]Firstly, the road network of Guangzhou is exported and saved as a .shp file through the GIS geographic information system, and the .shp file is imported into the TransModeler software as a new layer (that is, the road layer), and then the simulated road network is drawn according to the line shape of the road layer, and the completion Simulate the construction of road network. Among them, the scope of the road network includes high-speed expressways, main and secondary arterial roads and some branch roads within the ring expressway, as well as the main passages in and out of the city connected with the ring expressway. Set with reference to aerial pictures and street view maps on the Inte...

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Abstract

The invention discloses a construction method for an integrated dynamic traffic simulation platform of a city. The construction method for the integrated dynamic traffic simulation platform of the city has following beneficial effects: by integrating a macro-model, a mesoscopic model and a micro-model into an integrated simulation platform, the construction method helps to realize sharing of a road network and data and decrease waste of repeated modeling work and data resource so that higher efficiency and a broader application scope are obtained; compared with parameter calibration method based on the micro-model, the introduced parameter calibration method based on the mesoscopic simulation model has less modeling workload, quicker operating speed and a greater path analysis function; by additionally arranging a special interface tool, flow data can be directly imported or control data of a traffic signal control system can be directly read in; imported or read-in external static and dynamic traffic data can be automatically converted to data of the simulation platform, thereby cutting down the number of participants, updating traffic data in a real-time manner and further increasing efficiency; and the construction method is extensively applied to the field of virtual simulation.

Description

technical field [0001] The invention relates to the field of virtual simulation, in particular to a construction method of an integrated urban dynamic traffic simulation platform. Background technique [0002] Traffic simulation is economical, safe, repeatable, easy to use, controllable, fast and realistic, and expandable. It has become an important tool for urban traffic analysis, design, operation and evaluation systems. According to the different degrees of detail of the description of the traffic system, the traffic simulation model can be divided into three types: macroscopic, mesoscopic and microscopic. Among them, the macroscopic model can analyze and reproduce the macroscopic characteristics of traffic flow, which is suitable for large-scale static analysis of road networks, but the flexibility and description ability of the model are relatively limited; the mesoscopic model can approximately describe the behavior of vehicles such as lane changes, It is suitable for...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 邓兴栋韦栋周志华佘文晟熊文华郑淑鉴
Owner 广州市交通规划研究院有限公司
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