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Light scattering-based particulate matter concentration detection device

A technology for particle concentration and detection equipment, which is used in scattering characteristics measurement, particle suspension analysis, measurement devices, etc. It can solve the problems of low reference value of measured values ​​and differences in PM2.5 concentration, and achieve the effect of small size and low noise.

Inactive Publication Date: 2015-08-26
SHANGHAI QIBAO HIGH SCHOOL
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Problems solved by technology

[0004] In addition, PM2.5 will have a large concentration difference according to the terrain and regional characteristics. The current common measurement method cannot avoid this problem. The reference value of the measured value in individual areas is actually not high

Method used

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  • Light scattering-based particulate matter concentration detection device
  • Light scattering-based particulate matter concentration detection device
  • Light scattering-based particulate matter concentration detection device

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Embodiment Construction

[0016] Such as figure 1 As shown, a particle concentration detection device based on light scattering includes a particle sampling cutter 110 , a scattered light intensity detector 120 , a circuit board 130 and a display device 140 .

[0017] The particulate matter sampling cutter 110 has a cutting particle size of 2.5±0.2 μm and a geometric standard deviation of collection efficiency of 1.2±0.1 μm, and is used to separate PM2.5 particles in the sampled atmosphere from larger particles. The particle sampling cutter 110 is connected with a scattered light intensity detector 120 , and after the sampling is completed, the scattered light intensity detector 120 detects the scattered light intensity.

[0018] The circuit board 130 has a data processing module 131 , an external setting interface 132 for mass concentration conversion coefficients, a dedicated communication interface 133 and a power supply module 134 .

[0019] The data processing module 131 is connected with the sca...

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Abstract

The invention discloses a light scattering-based particulate matter concentration detection device. The light scattering-based particulate matter concentration detection device comprises a particulate matter sampling and cutting device, a scattered light intensity detector, a circuit board, and a display device; the particulate matter sampling and cutting device is connected with the scattered light intensity detector; cut diameter of the particulate matter sampling and cutting device is 2.5+ / -0.2<mu>m, and collection efficiency geometric standard deviation is 1.2+ / -0.1<mu>m; the circuit board is provided with a data processing module, and a mass concentration conversion coefficient externally arranged interface; the data processing module is connected with the scattered light intensity detector; the mass concentration conversion coefficient externally arranged interface is connected with the data processing module; and the display device is connected with the data processing module. The light scattering-based particulate matter concentration detection device is convenient for people to obtain PM2.5 concentration at a certain time timely, and is capable of providing convenience for air quality PM2.5 index real-time monitoring, and air pollution degree evaluation of certain areas, and providing favorable conditions for active treatment of PM2.5 pollution.

Description

technical field [0001] The invention belongs to the field of particle concentration detection, in particular to a particle concentration detection device based on light scattering. Background technique [0002] In recent months, major cities such as Beijing and Shanghai have suffered severe smog pollution. PM2.5 and PM10 are the main components of haze weather, but they are not completely equal to haze. Hazy weather reduces visibility and is prone to traffic accidents. PM2.5 refers to fine particles with a particle size of less than 2.5 μm composed of solid particles and liquid particles, also known as fine particles or particles that can enter the lungs. Its diameter is less than 1 / 20 of the thickness of a human hair. Suspended in the atmosphere for a long time and can float for a long distance. [0003] The ultra-fine particles PM2.5 not only cause severe haze and aggravate air pollution, but also easily cause asthma, respiratory diseases and other phenomena, seriously ...

Claims

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Application Information

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IPC IPC(8): G01N15/06G01N21/49
Inventor 高俊王思玥付欧丽杨怡龙凌
Owner SHANGHAI QIBAO HIGH SCHOOL
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