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Method and system for estimating urban mobile source pollution emission by using incomplete information

A technology of pollution discharge and mobile source, which can be used in traffic control systems, neural learning methods, geographic information databases, etc., and can solve problems such as errors in estimating pollution values.

Pending Publication Date: 2022-02-11
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0004] A method and system for estimating urban mobile source pollution discharge using incomplete information proposed by the present invention can solve the problem that the existing method has a large error in estimating the pollution value when the amount of data is small

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  • Method and system for estimating urban mobile source pollution emission by using incomplete information
  • Method and system for estimating urban mobile source pollution emission by using incomplete information
  • Method and system for estimating urban mobile source pollution emission by using incomplete information

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Embodiment Construction

[0097] In order to make the objects, technical solutions, and advantages of the present invention more clearly, the technical solutions in the embodiments of the present invention will be described in contemplation in the embodiment of the present invention. It is an embodiment of the invention, not all of the embodiments.

[0098] like figure 1 and figure 2 As shown, the utilization of incomplete information is estimated to estimate the urban mobile source contamination emission method, including the following steps:

[0099] Step 1: Space for motor vehicles in urban transportation and urban traffic network data pretreatment and construction data space. Depending on the data intensity obtained on the road segment, divide the road segment into 2 categories: Since the data is sparse, the information lack of traffic mode information is missing, and the data is sufficiently dense.

[0100] Step 2: Construct a continuous speed field and push traffic value through the above motor vehic...

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Abstract

The invention relates to a method and system for estimating urban mobile source pollution emission by using incomplete information. The method comprises steps that a road section is divided into two types according to the data density obtained on the road section, specifically including an information missing road section lacking traffic mode information due to sparse collected data and an information complete road section with enough dense data; a continuous speed field and a deduced flow value are constructed for the information complete road section through the motor vehicle driving related data, and a corresponding traffic emission value is calculated through a microscopic emission factor model according to the continuous speed field and the deduced flow value; a graph convolution unit and a gating linear unit are used for respectively extracting topological characteristics of a road network and time sequence dependence of motor vehicle emission sequences on a road section with complete information, so emission sequences on a road section with information missing are reconstructed, and missing emission distribution information is filled up. According to the method, more traffic modes and emission distribution characteristics are mined by using less urban traffic data, and the urban road section level traffic pollution emission refined estimation task is realized.

Description

Technical field [0001] The present invention relates to the field of environmental detection processing, and more particularly to an estimated urban mobile source contamination emissions and systems using incomplete information. Background technique [0002] At present, my country's large gas environment is grim, and the regional atmospheric environment in which fine particulate matter is characterized by contaminants. Among them, the source of mobile pollution represented by motor vehicles is huge to air quality, especially in Beijing, Shanghai, etc. Special cities and eastern Population intensive area, mobile source emissions for air pollution accounted for 20% to 50%. Despite the constant formulation of relevant policies to prevent airborne gas pollution, such as elimination of unqualified vehicles, upgrade oil quality, etc., the current mobile source pollution is still relatively serious. The pollution emission information in urban transportation networks can provide theoreti...

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Application Information

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IPC IPC(8): G06F16/215G06F16/2458G06F16/29G06N3/04G06N3/08G08G1/01G06Q50/26
CPCG06F16/215G06F16/2474G06F16/2477G06F16/29G06N3/08G08G1/0125G06Q50/26G06N3/048G06N3/045
Inventor 康宇赵振怡曹洋许镇义裴丽红吕文君
Owner UNIV OF SCI & TECH OF CHINA
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