Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A fast calculation method of mie scattering for on-line monitoring of dust particles

A fast calculation and particle technology, applied in particle suspension analysis, measurement device, suspension and porous material analysis, etc., can solve problems such as speed reduction, inability to meet the needs of tracking measurement of dust particle concentration, affecting the response speed of instruments, etc. The effect of rapid change, avoiding multiple loop operations, and reducing calculation time

Active Publication Date: 2019-08-13
TIANJIN TONGYANG TECH DEV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current data processing process, the speed is slowed down due to improper selection of the initial value and repeated calls to the Mie scattering function. Generally, each data processing time reaches more than 90s, which greatly affects the response speed of the instrument and cannot meet the tracking measurement requirements for the concentration of dust particles.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A fast calculation method of mie scattering for on-line monitoring of dust particles
  • A fast calculation method of mie scattering for on-line monitoring of dust particles
  • A fast calculation method of mie scattering for on-line monitoring of dust particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Such as Figure 1-3 As shown, the embodiment of the present invention provides a mie scattering fast calculation method applied to online monitoring of dust particles, including the following steps:

[0038] S1. Calculate the scattering coefficient of the particles to form a table of scattering coefficients:

[0039] According to the refractive index m of the dust and the wavelength λ of the incident light i , where 1≤i≤N, based on the Mie scattering theory to calculate the various particle sizes D existing in the dust space j , where 1≤j≤M, and calculate the theoretical scattering coefficient k of the particle under this particle size...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a rapid calculation method for mie scattering applied to dust particulate matter online monitoring. The method comprises the following steps that a particle scattering system is calculated, and a scattering coefficient table is formed; a particle size distribution mathematic model is built, and a reasonable initial value of a model parameter in an optimization algorithm is selected; particulate matter size distribution is subjected to inversion, and the particulate matter concentration is calculated. The particle theory scattering system is calculated in advance, a table look-up method is adopted for model parameter optimization calculation, repeated loop computation is avoided, and the calculation time is greatly shortened; a grid method is adopted in the algorithm for searching for a reasonable model parameter initial value for performing the first-time optimization algorithm, so that the global minimum value of a target function is accurately obtained; the model parameter initial value not measured at the first time is set as the model optimal parameter calculated the last time, iterations are reduced, and the operating speed is increased; the method has the advantages that the dust particulate matter size application range is large, and concentration change speed is large, and the method is used for a measuring system for performing real-time measurement of the dust particulate matter concentration.

Description

technical field [0001] The invention relates to the technical field of dust particle concentration measurement, in particular to a mie scattering fast calculation method applied to the online monitoring of dust particles. Background technique [0002] The sources of particulate matter in the atmosphere are complex, and the research results show that dust is an important factor causing atmospheric particulate matter pollution. The dust particle size range is large and the concentration changes rapidly. Therefore, the monitoring of dust changes requires a method with a wide range of applications, fast measurement speed, and online real-time measurement. [0003] The light scattering method to measure the concentration of particulate matter has the advantages of fast measurement speed, simple and convenient device, and real-time measurement. The principle of light scattering means that when the light hits the particles in the medium, the interaction with the medium will deviat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/06
Inventor 陈文亮李杏华肖云龙
Owner TIANJIN TONGYANG TECH DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com