Air pollutant monitoring and early warning method and cloud platform
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An air pollutant, monitoring and early warning technology, applied in the field of pollutant monitoring, can solve the problem of low data utilization
Pending Publication Date: 2022-04-05
SOUTHWEST PETROLEUM UNIV
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[0004] However, the current air pollution forecasting agencies and application software are dazzling, but the results released by them are only the list information of the monitoring results of pollutant concentration at fixed locations.
Method used
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Embodiment 1
[0068] Such as figure 1 and figure 2 , the present embodiment provides an air pollutant monitoring and early warning method, including:
[0069] (1) Set multiple monitoring points and collect the historical parameters of pollutant concentration, temperature, wind direction and wind speed at each monitoring point; pollutant concentration, temperature, wind direction and wind speed are used as model input parameters.
[0070] (2) Establish the three-dimensional field of urban air flow channel, ground reflectivity, wind speed and temperature distribution, the specific steps are as follows:
[0071] 1) Flow channel
[0072] A three-dimensional distribution grid of flow channels is established according to the distribution of urban topography and buildings.
[0073] 2) Ground reflectance distribution
[0074] Measure the ground reflectance in different areas and assign it to each grid to obtain the ground reflectance distribution.
[0075] 3) Wind speed field
[0076] In ord...
Embodiment 2
[0112] This embodiment provides an air pollutant monitoring and early warning cloud platform, including:
[0113] The data collection module is used to collect historical parameters of pollutant concentration, air temperature, wind direction and wind speed.
[0114] The data processing platform is used to obtain the diffusion parameters and deposition parameters of each pollutant.
[0115] Establish a three-dimensional puff trajectory model: In the uneven flow, the pollutant diffusion adopts the integral puff model:
[0116]
[0117] Among them, C p(x,y,z,T) Indicates the concentration of the pth source at (x, y, z) at time T, mg / m 3 ; σ x , σ y , σ z Indicates the diffusion coefficient at different degrees of stability, m 2 / s; u indicates the component of the flow field in the x direction, m / s; v indicates the component of the flow field in the y direction, m / s; ω indicates the component of the flow field in the z direction, m / s; H e Indicates the effective height ...
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Abstract
The invention discloses an air pollutant monitoring and early warning method and a cloud platform. The method comprises the following steps: setting a plurality of monitoring points; establishing a three-dimensional distribution grid, ground reflectivity distribution, a wind speed field and a temperature field of a flow channel; diffusion parameters and sedimentation parameters of pollutants are obtained, a three-dimensional puff trajectory model is established, three-dimensional flow field simulation is carried out, historical pollutant concentration and wind speed monitoring data are fitted, error data are corrected, the pollutant concentration of a certain fixed place in the future is predicted, and an air pollution index is calculated; performing three-dimensional flow field simulation through a puff trajectory model by using the monitoring point pollutant concentration and wind speed monitoring data so as to obtain a pollutant concentration plane distribution accurate tracking pollution source; and periodically issuing an air quality detection report, a prediction report, a pollutant distribution diagram and a predicted pollution source position to the user terminal. According to the invention, pollutant concentration monitoring can be intelligently processed, a pollution source can be accurately tracked, and the pollutant concentration of a certain fixed place in the future can be predicted.
Description
[0001] The present invention is a divisional application titled "Air Pollutant Monitoring and Early Warning Method and Cloud Platform", wherein the application number of the parent application is 201710322237.5, and the application date is 2017.05.09. technical field [0002] The invention relates to the technical field of pollutant monitoring, in particular to an air pollutant monitoring and early warning method and a cloud platform. Background technique [0003] With the rapid development of the economy, people's living standards have been continuously improved, but the problem of environmental pollution has gradually become prominent. Inhalable particles and toxic gases seriously threaten people's life and health. In order to solve this problem, relevant departments have issued a series of environmental monitoring standards, such as "Ambient Air Quality Standards", "Ambient Air Quality Monitoring Specifications (Trial)", "Ambient Air Quality Monitoring Specifications (Tri...
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