Photo-thermal interferometer for monitoring concentration of particulate matters in atmosphere and monitoring method of photo-thermal interferometer

A technology of atmospheric particulate matter and photothermal interference, applied in the field of photothermal interferometer, can solve the problems of long measurement time, weighing method is not suitable for continuous observation, and response time cannot meet the measurement requirements

Active Publication Date: 2014-12-24
HEFEI UNIV OF TECH
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weighing method is not suitable for continuous observation; the installation and operation costs of the vibrating balance are high; the Beta ray absorption method can meet the requirements of environmental monitoring, but because the counting value needs to be statistically analyzed, the

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
  • Photo-thermal interferometer for monitoring concentration of particulate matters in atmosphere and monitoring method of photo-thermal interferometer
  • Photo-thermal interferometer for monitoring concentration of particulate matters in atmosphere and monitoring method of photo-thermal interferometer
  • Photo-thermal interferometer for monitoring concentration of particulate matters in atmosphere and monitoring method of photo-thermal interferometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A photothermal interferometer for monitoring the concentration of atmospheric particulate matter, including a laser 13 capable of emitting linearly polarized light, a first 1 / 4 wave plate 1, a parallel plate pair 2, and an aerosol chamber 3 are sequentially arranged on the right side of the laser 13 , Corner reflection prism 5, wherein the parallel plate pair 2 is made of a pair of front and rear glass plates 21, 22 inclined and parallel to each other, and the front and rear glass plates 21, 22 are staggered front and back on the right side of the first 1 / 4 wave plate 1 Distribution, wherein the left side of the front glass plate 21 is facing the right side of the rear glass plate 22, and the left side of the front glass plate 21 is facing the first 1 / 4 wave plate 1, the front and rear glass plates 21, 22 The right sides are respectively facing the aerosol chamber 3, and the left side of the front glass plate is attached with an anti-reflection film and a high-reflection...

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
Wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a photo-thermal interferometer for monitoring the concentration of particulate matters in the atmosphere and a monitoring method of the photo-thermal interferometer. The photo-thermal interferometer comprises a laser, a first quarter wave plate, a parallel panel pair, an aerosol chamber, a corner reflecting prism, a modulation laser, a non-depolarization beam splitting prism and a polarization beam splitting prism photoelectric detection device. The monitoring method comprises the steps of filtering sampled air by utilizing filter paper to form dust-containing filter paper, and illuminating the dust-containing filter paper by virtue of modulated laser to cause the variation of surface air temperature and refractive index. If components of the particulate matters in the air are constant, the mass of particulate matters on the filter paper is acquired by measuring the variation of the air refractive index, and the mass of particulate matters on the filter paper is equivalent to the mass concentration of the particulate matters in the air by virtue of a sampling volume.

Description

technical field [0001] The invention relates to the field of atmospheric particle concentration monitoring devices and methods, in particular to a photothermal interferometer and a monitoring method for monitoring the concentration of atmospheric particulate matter. Background technique [0002] Atmospheric particulate matter has a very important impact on climate and human health, especially particulate matter with a particle size of less than 2.5 microns, referred to as PM2.5. It is rich in a large amount of toxic and harmful substances and has a long residence time in the atmosphere and a long transportation distance, so it has a great impact on human health and the quality of the atmospheric environment. PM2.5 is the main reason for the formation of haze weather. PM2.5 is a kind of air pollutant that causes air pollution and is the most serious hazard to human health. At present, there are mainly weighing methods, quartz micro-oscillating balance methods, and Beta ray m...

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
IPC IPC(8): G01N15/06G01N21/45
Inventor 李保生王易诚马飞
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap