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Method for identifying multiple pollution sources in city space by using moveable pollutant detector

A pollutant and detector technology, applied in the field of atmospheric pollutant source identification, can solve problems such as consuming large computing resources, and achieve the effects of fast speed, low initial investment and accurate results

Inactive Publication Date: 2017-05-31
DALIAN UNIV OF TECH
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Problems solved by technology

Representatively, Cai et al. used the forward method to identify multi-pollutant sources in the article Fast identification of multiple indoorconstant pollutant sources by ideal sensors: a theoretical model and numerical validation. The results showed that this method required a large amount of computing resources and It is necessary to know in advance the location of possible pollutant sources and other data that are difficult to obtain in actual situations.

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  • Method for identifying multiple pollution sources in city space by using moveable pollutant detector
  • Method for identifying multiple pollution sources in city space by using moveable pollutant detector
  • Method for identifying multiple pollution sources in city space by using moveable pollutant detector

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Embodiment

[0024] A method for identifying multiple pollutant sources in urban space by using a movable pollutant detector, characterized in that the steps are as follows:

[0025] The first step is to establish a three-dimensional model of the building based on the three-dimensional map of the city, and then use computational fluid dynamics to solve the Navier-Stokes equation to obtain the speed of the urban area to be measured according to the dominant wind speed and wind direction in the upwind direction of the urban area to be measured. field;

[0026] The second step is to move the pollutant detector to three measuring points in the urban area to be tested. First, there is only one pollutant source in the urban area to be tested by default. Move the pollutant detector to a random location in the urban area to be tested and detect its pollution. If the detected pollutant concentration value is higher than the limit value of the pollutant’s harm to the human body, the position of the po...

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Abstract

The invention belongs to the technical field of atmosphere pollutant source identifying, and in particular relates to a method for identifying multiple pollution sources in a city space by using a moveable pollutant detector. The invention discloses a rapid reverse identification method different from conventional trial-and-error methods for multiple pollutant sources for a first time, multiple pollutant sources can be rapidly identified by using a single moveable pollutant detector, the initial investment is low, the speed is high, the result is accurate, real-time monitoring and rapid diagnosis of a city atmosphere environment can be achieved, and an economic and efficient technical scheme can be provided for government and decision of city atmosphere pollution. To verify the accuracy of the result, after the steps are completed and all pollutant sources are identified, the pollutant sources are repeatedly identified at moments, and at the moments, main air speeds and air directions are remarkably different from those, thereby ensuring that all pollutant sources can be found.

Description

technical field [0001] The invention belongs to the technical field of air pollutant source identification, and in particular relates to a method for identifying multiple pollutant sources in urban space by using a movable pollutant detector, which is used for identifying the position and release intensity of multiple pollutant sources that exist simultaneously , so as to control the source of pollutants. Background technique [0002] The existing pollution source identification methods are mainly divided into two categories: forward calculation method and reverse calculation method. The forward calculation method is a relatively simple trial-and-error method. For example, in the article Identifying sources of groundwater pollution: an optimization approach, Gorelick S M et al. gradually approach the position of the pollutant source through the continuous trial movement of the movable detector. , such a method is often less efficient. The reverse calculation method starts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06T17/00
CPCG06F2219/10G06T17/00G16Z99/00
Inventor 翟志强薛雨
Owner DALIAN UNIV OF TECH
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