Multi-resolution modeling simulation system and multi-resolution modeling simulation method for traffic system
A multi-resolution, traffic system technology, applied in the field of multi-resolution modeling and simulation systems of traffic systems, can solve the problems of multi-resolution modeling methods and technologies that have not been reported publicly, and achieve the effect of overcoming the problem of system consistency maintenance
Inactive Publication Date: 2010-06-09
TONGJI UNIV
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[0005] After searching the existing technical literature, it is found that there is no pu...
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Embodiment 1
[0025] Embodiment 1: as figure 1 As shown, under the framework of UNITRAFFIC, the most basic unit of the multi-resolution traffic simulation system is "entity", which takes a road segment (Link) or a small-scale collection of road segments (such as an intersection) as a modeling object. "Interaction" is defined as the process by which entities in the system receive and respond to external events. A typical embodiment is the process in which the traffic flow in a link entity is transferred to another link. In this process, the upstream link (entity) sends an interaction request to the downstream link (entity), and the request is captured by the interactive interpreter. The interactive interpreter determines the response sequence of interactive requests according to preset rules. The request is then sent to the consistency maintainer, which is responsible for the cross-resolution interpretation of the request through the shared attribute core module 5, and sends the interpreted...
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The invention belongs to the technical field of the simulation and optimization of a traffic system, and particularly relates to a multi-resolution modeling simulation system and a multi-resolution modeling simulation method for the traffic system. The system consists of a macro/meso layer, a micro layer, an interaction resolver, a consistency enforcer and a shared attribute core module, wherein input ends and output ends of the macro/meso layer and the micro layer are connected with the consistency enforcer respectively; the input ends of the macro/meso layer and the micro layer are connected with the interaction resolver; and the input end and the output end of the consistency enforcer is connected with an attribute core. When the system begins to operate, the flow is loaded onto various sub-entities; when the flow enters another resolution layer from one resolution layer, an upstream entity sends an external event to a downstream entity, and the downstream entity can decide the sequence of responding to the external event according to the condition; the consistency enforcer is responsible for ensuring that the macro/meso layer and the micro layer can respond to the external event respectively and keep the consistency of system state; after the response, the consistency enforcer can still be responsible for the difference of response results of the macro/meso layer and the micro layer; and output flow, velocity and density information are taken as the external event which is output to the downstream entity. The system and the method solve the problem of the maintenance of system consistency in multi-resolution simulation, provide a basic method and realization components for converting traffic simulation models with different resolutions, and further realize the macro, meso and micro multi-resolution simulation on the traffic system.
Description
technical field [0001] The invention belongs to the technical field of traffic system simulation and optimization, and in particular relates to a traffic system multi-resolution modeling and simulation system and method. Background technique [0002] Traffic simulation is a technology widely used in traffic planning, design and intelligent transportation system (ITS). With the help of traffic simulation, researchers can conduct experimental research on the operation status of the traffic system without affecting the actual traffic system, so as to provide important reference information for traffic planning and design, and also provide necessary information for intelligent traffic systems . Due to its wide application background, the research on the theory and technology of traffic simulation has always been a research hotspot in the field of traffic engineering. [0003] After decades of development, traffic simulation has formed a series of relatively complete theories a...
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Inventor 孙剑李克平黄玮南熊耀华
Owner TONGJI UNIV
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