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

PM2.5 detection method based on optical scattering principle

A detection method and principle technology, applied to the measurement of scattering characteristics, etc., can solve the problems of difficult cleaning of the cutter, increase of detector error, high maintenance cost, etc., and achieve the effects of reducing interference, improving detection accuracy, and simple implementation

Active Publication Date: 2018-10-23
CHONGQING UNIV
View PDF32 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PM2.5 cutter, the key component of the single-wavelength scattering method, uses the oil adsorption method to absorb large particles of interference to achieve the purpose of interference removal, but the cutter has the disadvantages of being difficult to clean and high maintenance costs, which may easily reduce the working efficiency of the detector due to the cutting machine The phenomenon of increasing error

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
  • PM2.5 detection method based on optical scattering principle
  • PM2.5 detection method based on optical scattering principle
  • PM2.5 detection method based on optical scattering principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Embodiment: A PM2.5 detection method based on the principle of optical scattering, which is characterized in that the air flow at the detection position is first driven, and then the volume of the unit space passing through the cross-sectional circle with a diameter of 2.5 microns per unit time is obtained at a fixed wind speed The number of PM2.5 particles in the air is then converted to the PM2.5 content of the air.

[0033] Since the PM2.5 concentration in the air is fixed and the wind speed is fixed, the number of PM2.5 particles passing through a unit space volume with a cross section of 2.5 microns per unit time is also fixed, so this method can rely on this principle to be convenient, fast and accurate Reliably detect the PM2.5 concentration in the air.

[0034] In this embodiment, based on the principle of light scattering, the detection position is irradiated with colored light and the color sensor is used to judge and determine the PM2 passing through the unit...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a PM2.5 detection method based on an optical scattering principle. The method is characterized in that firstly, air at a detection position is driven to flow, then the number of PM2.5 particles which pass through a unit space volume with the cross section circle-diameter of 2.5 microns within unit time is obtained at a fixed wind speed, and then conversion is carried out soas to obtain the PM2.5 content of the air at the position. The method has the advantages of being capable of detecting the PM2.5 concentration of the air, easy to implement, convenient and rapid to use, accurate and reliable in detection result and the like.

Description

technical field [0001] The invention relates to the technical field of air quality detection; in particular, it relates to a PM2.5 detection method based on the principle of optical scattering. Background technique [0002] fine particulate matter fine grain , fine particles, PM2.5 . in the ambient air aerodynamics Equivalent diameter less than or equal to 2.5 Micron of particulate matter. It can be suspended in the air for a long time, and the higher its concentration in the air, the more serious the air pollution. Although PM2.5 It is only a small component of the earth's atmospheric composition, but it has an important impact on air quality and visibility. Compared with coarser atmospheric particles, PM2.5 has small particle size, large area, strong activity, and is easy to be toxic, Have Hazardous substances (For example, heavy metal , microorganism etc.), and the residence time in the atmosphere is long and the transportation distance is long, so it h...

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): G01N21/53
CPCG01N21/53
Inventor 孙艾栋马宜有
Owner CHONGQING UNIV
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