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Traffic Network Simulation System

A simulation system and transportation network technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of slow processing speed, difficult to achieve simulation, etc., to achieve the effect of improving efficiency

Inactive Publication Date: 2019-03-26
温州市鹿城区中津先进科技研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they all belong to the stand-alone version of the system. When the scale of the traffic road network becomes larger, its processing speed is very slow, and it is difficult to meet the requirements of simulation.

Method used

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Embodiment Construction

[0013] Such as figure 1 , figure 2 , image 3 As shown, an embodiment of the traffic network simulation system of the present invention includes objects such as subnets, road sections, lanes, intersections, connectors, detectors, clocks, signal lights, and vehicles. According to the entity relationship of objects in the traffic network, the The object is designed as an abstract object represented by the computer, the basic data structure of the simulation system is established, and the large-scale road network is efficiently divided by using the parallel computing model and the orthogonal recursive bisection method. The parallel computing model can adopt two models of functional decomposition and domain decomposition. The parallel computing model is a functional decomposition model that takes computing as the object of division, and the functional decomposition model divides computing into different tasks to run simultaneously on different computers.

[0014] The parallel ...

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Abstract

A traffic network simulation system including subnets, a section of road, junction, connector, detector, clock, Signal lights and vehicles, According to the entity relation of the objects in the traffic network, Objects are designed as abstract objects represented by a computer, the basic data structure of simulation system is established, and the parallel computing model and the orthogonal recursive bisection method are used to segment the large-scale road network efficiently, After dividing it into several subnets, each processor is responsible for processing one subnet. During each simulation step, if the generated vehicle exceeds the boundary of its own subnet, it needs to exchange vehicle information with its neighboring subnets and send the vehicle information to the main process. The traffic network simulation system of the invention divides the whole road network into a plurality of sub-networks, and each sub-network completes the simulation in a parallel execution mode, thereby improving the efficiency.

Description

technical field [0001] The invention relates to a simulation system, especially a traffic simulation system. Background technique [0002] Traffic simulation is the focus of traffic research. In recent years, the number of families with cars has gradually increased, and people's travel volume has increased, resulting in an increasing traffic load. Therefore, simulation software to solve traffic problems have emerged, such as VISSIM and TSIS. However, they all belong to the stand-alone system. When the scale of the traffic road network becomes larger, its processing speed is very slow, and it is difficult to meet the simulation requirements. Therefore, it is very meaningful to study the system of cluster processing large amount of computation. [0003] The MPI (Message Passing Interface) standard was formulated by 40 countries and European organizations including computer manufacturers, universities and government laboratories. Its purpose is to establish a high-performance ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/18G06F30/20
Inventor 王振宇
Owner 温州市鹿城区中津先进科技研究院
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