Underway particulate matter detection system and method

A particle detection and mobile-based technology, which is applied in particle suspension analysis, measuring devices, suspension and porous material analysis, etc., can solve the problem of large volume structure of light scattering detection unit, unsuitable for portable mode of mobile mode, production cost and High maintenance costs and other issues, to achieve the effect of improving detection efficiency, accurate and reliable monitoring results, and reducing detection costs

Pending Publication Date: 2022-01-07
HANGZHOU PUYU TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Low temporal resolution;
[0005] The minimum time resolution is 1s of the light scattering detector, and it is not enough to meet the demand when calculated at a moving speed of 5m / s for navigation monitoring
For example, if the air is sampled at point A, the result will be released only when the navigation vehicle reaches point B, and it is no longer possible to carry out re-inspection and other work on the test results at point A.
[0006] 2. The volume structure of the light scattering detection unit is too large, which does not meet the portability requirements of the navigation mode
[0007] 3. The production cost and maintenance cost of the product are also high, and the operator of the instrument needs to have a certain degree of professional operation quality

Method used

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  • Underway particulate matter detection system and method
  • Underway particulate matter detection system and method
  • Underway particulate matter detection system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] figure 1 A schematic structural diagram of a mobile particle detection system according to an embodiment of the present invention is given, as shown in figure 1 As shown, the mobile particle detection system includes:

[0041] Walking vehicle, sampling pipe 11 and particle collection unit, the sampling pipe passes through the top wall of the walking vehicle, and the particle collection unit includes a filter membrane 23, a drive module, a first wheel 21 and a second wheel 22, One end of the filter membrane 23 is wound on the first wheel 21, and the other end is wound on the second wheel 22, and the driving module drives the forward rotation of the first wheel 21;

[0042] An optical particle detection device, the optical particle detection device includes a first imaging unit 31, a second imaging unit 32, an analysis module 51, a correction module 61 and a memory 71, the first imaging unit 31 and the second imaging unit 32 respectively arranged on the sides of the sam...

Embodiment 2

[0083] An application example of the mobile particle detection system and method according to Embodiment 1 of the present invention in the detection of atmospheric particles.

[0084] In this application example, if figure 1 As shown, the navigation vehicle adopts JMC Transit; the sampling pipe 11 passes through the top wall of the navigation vehicle; the particle collection unit includes a filter membrane 23, a drive module, a first wheel 21 and a second wheel 22, and one end of the filter membrane 23 Wound on the first wheel 21, and the other end is wound on the second wheel 22, the drive module drives the forward rotation of the first wheel 21 and the reverse rotation of the second wheel 22; when When the sampling tube 11 descends and the filter membrane 23 is clamped between the sampling tube 11 and the pipeline 12, the sampling pump 13 works, and the outside air passes through the sampling tube 11, the filter membrane 23 and the pipeline 12 in turn; when the sampling tube...

Embodiment 3

[0117] According to the application example of the mobile particle detection system and method in embodiment 1 of the present invention in the detection of atmospheric particles, the difference from embodiment 2 is:

[0118] The first wheel moves forward, and the second wheel is a driven wheel. The same area on the filter membrane passes through the first imaging unit, the sampling tube, the second imaging unit and the lower side of the β-ray particle detection device in sequence;

[0119] Each area of ​​the filter membrane is followed by blank filter imaging, sampling, filter imaging after sampling, and possible detection of β-ray particles, that is, each area can only be sampled and detected once.

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Abstract

The invention provides an underway particulate matter detection system and method. The underway particulate matter detection system comprises an underway vehicle, a sampling pipe and a particulate matter collecting unit, wherein the sampling pipe penetrates through a top wall of the underway vehicle; the optical particulate matter detection system comprises a first imaging unit, a second imaging unit, an analysis module, a correction module and a memory, the analysis module obtains the calculated concentration C1 of particulate matters on a filter film according to imaging; the correction module obtains correction concentration C2=k.C1 according to the calculated concentration C1, wherein k is a correction coefficient; the memory stores the correction coefficient k; the beta-ray particulate matter detection device obtains the content C beta of particulate matters in the correction area on the filter film during correction; a calculation module obtains a new correction coefficient C0 according to the calculated concentration and the content C [beta] of the particulate matters, wherein the new correction coefficient C0 is the correction concentration of the particulate matters in the correction area, and the new correction coefficient is sent to the memory; and the control module replaces the correction coefficient in the memory with a new correction coefficient. The method has advantages of accurate detection and the like.

Description

technical field [0001] The invention relates to the detection of atmospheric particulate matter, in particular to a system and method for detecting particulate matter under navigation. Background technique [0002] Ambient air particulate matter comes from a wide range of sources and is easily affected by environmental parameters such as wind speed and direction, resulting in large differences in the distribution of different time and space. At present, the monitoring of particulate matter in the air is mainly divided into offline monitoring (such as weighing method) and online monitoring (such as β-ray method, oscillating balance method, and light scattering method). Among them, offline monitoring has high accuracy, but it cannot be counted on site, and the operation is cumbersome, time-consuming and laborious. On-line monitoring can make up for the inability of offline monitoring to obtain data on site, but it cannot meet the needs of large-scale real-time data output, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N2015/0693
Inventor 温胜敏刘盈智刘立鹏韩双来黄俊兴卢智易费杰代磊
Owner HANGZHOU PUYU TECH DEV CO LTD
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