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Vehicle activity level analysis method facing real-time road network discharge assessment

An analysis method and real-time road condition technology, applied in the field of environmental science and intelligent transportation, can solve the problems of immature calculation algorithm of traffic exhaust real-time emission and failure to realize real-time online emission, so as to optimize road operation conditions and improve urban air quality. Quality and Emissions Reduction Effects

Inactive Publication Date: 2018-09-04
SUN YAT SEN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0004] To sum up, the research on motor vehicle pollution at the present stage in my country has gradually become more precise and accurate. At present, technological progress has been made in the research direction of emission assessment methods reflecting dynamic characteristics. Realize large-scale real-time online emission calculation

Method used

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  • Vehicle activity level analysis method facing real-time road network discharge assessment
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  • Vehicle activity level analysis method facing real-time road network discharge assessment

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Embodiment 1

[0039]A vehicle activity level analysis method for real-time road network emission assessment, the specific steps are as follows:

[0040] Step 1. Real-time acquisition, storage, and processing of public real-time traffic condition information by means of block interception, road network matching based on ArcGIS, status discrimination based on block color recognition method, and processing of the real-time traffic condition information into Actionable data for time identification, link identification, and status identification. The disclosed real-time traffic and road condition information is the real-time traffic condition grade with road section as the unit, and the time resolution is less than 1 hour. The road condition level should be at least divided into three levels: free flow, congested flow, and blocked flow, and they can be clearly distinguished. The processing of the public real-time traffic condition information is specifically as follows: firstly, for the public ...

Embodiment 2

[0061] Taking Foshan City as the experimental area, using electronic map real-time road condition information data as the public source of real-time traffic condition information, this paper further explains the vehicle activity level analysis method for real-time road network emission assessment.

[0062] Step 1. For the real-time traffic information data of the electronic map, automatically acquire and store the tiles in the real-time road conditions of the web map at a certain time frequency, and perform road network matching on the tile data based on ArcGIS, and perform state discrimination based on the tile color recognition method, and The real-time traffic and road condition information is processed into operable data with time marks, road section marks, and state marks. With the development of intelligent transportation system and big data technology, traffic information collection technology has been rapidly enriched and improved, which provides the possibility to wide...

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Abstract

The present invention provides a vehicle activity level analysis method facing real-time road network discharge assessment. The method takes achieving of dynamic discharge assessment in a road trafficactual operation condition as a target, a vehicle activity level analysis method is established according to the disclosed real-time traffic road condition information so as to support the road network level real-time traffic pollution assessment. The method concretely comprises the steps of: taking the real-time dynamic traffic information as a basis, constructing a data collection and processing method of employing the real-time traffic road condition information to obtain operation parameters facing dynamic discharge assessment, establishing a corresponding relation model based on relatedrelations of real-time traffic road condition and the road section average speed and the road section average speed and the road section real-time flow, establishing a vehicle activity analysis methodof real-time road condition-road section speed-road section flow, and combining a vehicle pollution discharge measurement model to achieve dynamic discharge assessment in the road traffic operation condition.

Description

technical field [0001] The invention relates to the fields of environmental science and intelligent transportation technology, in particular to a vehicle activity level analysis method for real-time road network emission assessment. Background technique [0002] The rapid development of my country's transportation system, on the one hand, has formed an increasingly mature and rich traffic information collection technology system for multi-angle perception and regulation of road traffic conditions. On the other hand, due to the continuous growth of motor vehicle ownership and travel rate , the energy consumption and pollution emissions generated by the transportation sector are also increasing. According to the source apportionment work results of 9 key cities for air pollution prevention and control conducted by the Ministry of Environmental Protection in 2015, motor vehicle pollution has become the primary source of pollution in Beijing, Hangzhou, Guangzhou, and Shenzhen. S...

Claims

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Application Information

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IPC IPC(8): G08G1/01
CPCG08G1/0129G08G1/0137
Inventor 刘永红林晓芳李丽丁卉
Owner SUN YAT SEN UNIV
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