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

Continuous-laser-based method for obtaining spherical particle spectrum complex refractive index and particle system particle size distribution

A technology of complex refractive index and particle size distribution, applied in the field of particle optical property measurement, can solve the problems of inability to directly measure measurement results, inaccuracy, etc., and achieve the effects of easy theoretical solution, high efficiency and sensitivity, and convenient purchase.

Active Publication Date: 2015-05-20
HARBIN INST OF TECH
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the conventional method for obtaining the spectral complex refractive index and particle size distribution of spherical particles cannot be directly measured and the measurement results are inaccurate, and to provide a continuous laser-based method for spherical particle spectral complex refractive index and particle size distribution. The method of obtaining the particle size distribution

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
  • Continuous-laser-based method for obtaining spherical particle spectrum complex refractive index and particle system particle size distribution
  • Continuous-laser-based method for obtaining spherical particle spectrum complex refractive index and particle system particle size distribution
  • Continuous-laser-based method for obtaining spherical particle spectrum complex refractive index and particle system particle size distribution

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0042] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a continuous laser-based method for obtaining spectral complex refractive index and particle size distribution of spherical particles described in this embodiment includes the following steps:

[0043] Step 1: Make sample containers with thicknesses L1 and L2 respectively, put the particles to be tested into the two sample containers at the same concentration, and ensure that the sample particles in the two sample containers are always in a suspended state;

[0044] In this step, the sample particle system is always in a suspended state to ensure that the particle system in the sample container is evenly distributed;

[0045] Step 2, using the wavelength λ 1 The continuous laser along with thickness L 1 The sample particle system in the sample container is incident in the direction perpendicular to the surface of the sample container, the surface is the left side surface of the sample pa...

specific Embodiment approach 2

[0067] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation of the continuous laser-based method for obtaining the spectral complex refractive index and particle size distribution of spherical particles described in Embodiment 1. In this embodiment, the steps described The inverse problem in step 4 and step 7 is realized by quantum particle swarm optimization algorithm.

specific Embodiment approach 3

[0068] Specific implementation mode three: combination figure 1 Describe this embodiment. This embodiment is a further limitation of the continuous laser-based method for obtaining the spectral complex refractive index of spherical particles and the particle size distribution of the particle system described in Embodiment 1. In this embodiment, in step 5, The radiation field strength in the computational domain is obtained using the following radiative transfer equation:

[0069] ∂ I ( x , θ ) ∂ x = - ( κ a + κ s ) I ( x , θ ) + ...

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 relates to a continuous-laser-based method for obtaining spherical particle spectrum complex refractive index and particle system particle size distribution, belonging to the technical field of particle optical property measurement, and aiming at solving the problems that the conventional method for obtaining the spherical particle spectrum complex refractive index and the particle system particle size distribution can not be used for directly measuring and is not accurate in measuring results. According to the continuous-laser-based method, a model is solved by establishing forward problem and inverse problem of the measurement of a spherical particle system reflecting signal, a transmission signal and a collimating transmission signal, and the spherical particle spectrum complex refractive index and the particle system particle size distribution condition can be obtained by inversion. The method adopts the continuous laser, and a laser is low in price, simple in model and convenient in theory solution; the Mie theoretical model is adopted, so that the electromagnetic scattering property of particles can be accurately reflected; a quantum particle swarm optimization algorithm is adopted, so that the method has the advantages of being simple, efficient, high in sensitivity and the like. The method is suitable for measuring the particle optical properties.

Description

technical field [0001] The invention relates to a simultaneous inversion method of spherical particle spectrum complex refractive index and particle size distribution based on continuous laser technology, and belongs to the technical field of particle optical characteristic measurement. Background technique [0002] Particle systems involve many fields such as metallurgy, power, construction, medicine, biology, aerospace, military and atmospheric science. The absorption, scattering and emission properties of particles play an important role in many engineering and environmental systems, so it is particularly important to solve the spectral complex refractive index of particles. The particle size distribution of the particle system is also one of its important parameters and technical indicators, which is closely related to the efficient use of energy and the prevention and control of environmental pollution. [0003] The experimental research methods of particle optical pro...

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 Applications(China)
IPC IPC(8): G01N15/00G01N15/02
Inventor 任亚涛齐宏黄兴阮立明谈和平
Owner HARBIN INST OF TECH
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