Traffic air pollutant concentration prediction method and system based on meteorological condition

A technology for air pollutants and meteorological conditions, applied in forecasting, data processing applications, calculations, etc., can solve problems such as difficulty in obtaining a large amount of data, ignoring pollutant residues, and difficulty in accurately obtaining road traffic emissions.

CN106548258AActive Publication Date: 2017-03-29BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-03-29

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Abstract

The invention discloses a traffic air pollutant concentration prediction method based on a meteorological condition. The method comprises the following steps: S1, calculating an integrated emission factor based on equivalent traffic volume; S2, calculating the pollutant emission rate of a link, preprocessing a pollutant diffusion source based on a meteorological condition, and calculating the source strength of the pollutant diffusion source; S3, determining the pollution range and concentration of each pollutant according to the diffusion pattern of each pollutant under the meteorological condition; and S4, calculating the pollutant residual concentration in a current time period and the pollutant concentration in a future time period in an observation area, and predicting the predicted pollutant concentration in the future time period in the observation area. The invention further discloses a traffic air pollutant concentration prediction system based on a meteorological condition. Real-time traffic data and meteorological data are considered in the estimation of traffic air pollutant concentration. The concentration residual of pollutants is also considered. The practicability and accuracy of traffic air pollutant concentration prediction are enhanced.
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Description

technical field

[0001] The invention relates to the field of traffic air pollutant concentration prediction. More specifically, it relates to a method and system for predicting the concentration of traffic air pollutants based on meteorological conditions. Background technique

[0002] The continuous growth of motor vehicle ownership and travel demand of urban residents in my country has led to more motor vehicle exhaust emissions, which has seriously affected urban air quality and residents' living environment. Therefore, constructing a method for estimating the concentration of traffic pollutants is of great significance for monitoring the impact of traffic on air pollution. At present, although the traditional traffic pollutant concentration estimation method has formed a system, there are still some deficiencies: First, the existing traffic pollutant concentration prediction method assumes that the traffic emissions are known, and this data is actually difficult to obta...

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Embodiment Construction

[0114] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0115] One aspect of the present invention discloses a traffic air pollutant concentration prediction method based on meteorological conditions, characterized in that the method includes:

[0116] S1: Calculate the comprehensive emission factor based on the equivalent traffic volume based on the proportion of vehicle types, conversion factors of vehicle types and emission factors of vehicle types;

[0117] S11: Calculate the equivalent traffic volume based on the natural traffic volume according to the vehicle type ratio a...