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Method and device for estimating air pollutant concentration

A technology for atmospheric pollutants and pollutant concentrations, which is applied in the field of estimating the concentration of atmospheric pollutants and can solve problems such as estimating atmospheric pollutants

Active Publication Date: 2019-06-21
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the technical problem to be solved by the present invention is how to efficiently and accurately estimate the concentration of air pollutants based on traffic conditions

Method used

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  • Method and device for estimating air pollutant concentration
  • Method and device for estimating air pollutant concentration
  • Method and device for estimating air pollutant concentration

Examples

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Embodiment 1

[0100] figure 1 A flowchart showing a method for estimating the concentration of air pollutants according to an embodiment of the present invention. Such as figure 1 As shown, the methods for estimating the concentration of air pollutants mainly include:

[0101] Step 101. Divide the roads in the target area into multiple pollution sources, and determine the influence range of each pollution source.

[0102] In one possible implementation, see Figure 2a to Figure 2d , this step may specifically include:

[0103] Step 1011, divide all roads in the target area into at least one pollution source.

[0104] Specifically, as Figure 2a As shown, there may be multiple roads in the target area. First, each road in the target area is divided into several sub-sections. The division method can be divided into equal lengths, or the target area can be divided into grids of fixed size (such as 1km* 1km), and then divide the road into several sub-sections according to the grid.

[...

Embodiment 2

[0177] Figure 4 A schematic structural diagram of a device for estimating the concentration of air pollutants according to an embodiment of the present invention is shown. Such as Figure 4 As shown, the estimation device of the air pollutant concentration mainly includes:

[0178] A pollution source division module 41, configured to divide the roads in the target area into multiple pollution sources, and determine the scope of influence of each pollution source;

[0179] Correspondence determination module 43, connected with the pollution source division module 41, for determining the correspondence between the pollution source and the research point according to the influence range of each pollution source and the location information of each research point in the target area , wherein the corresponding relationship can indicate which pollution sources affect one of the research points and / or which research points will be affected by one of the pollution sources;

[0180...

Embodiment 3

[0185] Figure 5 A schematic structural diagram of a device for estimating the concentration of air pollutants according to another embodiment of the present invention is shown. Figure 5 Winning mark and Figure 4 The same components have the same functions, and detailed descriptions of these components are omitted for brevity.

[0186] Such as Figure 5 As shown, the main difference with the previous embodiment is that the pollution source classification module 41 includes:

[0187] A road division submodule 411, configured to divide all roads in the target area into at least one pollution source;

[0188] The type determination submodule 413 is used to determine whether the type of each pollution source is a point type or a line type according to the meteorological data in the target area; and

[0189] The influence scope determination sub-module 415 is used for determining the influence scope of each pollution source according to the meteorological data and the type of...

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Abstract

The invention relates to an estimation method and an estimation apparatus for the atmospheric pollutant concentration. The method comprises: dividing the road within a target area into a plurality of pollution sources, and determining the influence range of each pollution source; according to the influence range of each pollution source and the position information of each research point within the target area, determining the corresponding relationship between the pollution source and the research point; based on each research point, calculating the pollution risk value respectively according to the pollution intensity of the corresponding pollution source and the diffusion model; according to the pollution risk values of the plurality of the research points having the determined pollutant concentration values within the target area, establishing a regression model between the pollution risk value and the pollutant concentration value; and based on the concerned research points having the unknown pollutant concentration values within the target area, substituting the pollution risk value of the concerned research point into the regression model, and calculating the pollutant concentration value of the concerned research point. With the method and the apparatus of the present invention, the concentration of the atmospheric pollutant of the concerned research point at any spatial positions within the target area can be efficiently and accurately estimated.

Description

technical field [0001] The invention relates to estimation of air pollutant concentration, in particular to a method and device for real-time estimation of urban air pollutant concentration based on traffic conditions. Background technique [0002] With the growth of urban construction and the number of motor vehicles, the emissions of pollutants such as NOx, CO and PM (particulate matter) produced by motor vehicles (hereinafter referred to as emissions) continue to increase, becoming the main factor affecting urban air quality. one of the factors. Moreover, calculating the air quality in any area of ​​the city to determine the finer distribution of pollutants will not only help the public make reasonable travel plans, but also help managers formulate targeted air quality prevention and control measures. [0003] However, due to the influence of the environment, funds, etc., the number of air quality monitoring stations in each city is limited, and only the pollutant concen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/06
Inventor 潘征胡卫松王少亚
Owner NEC CORP
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