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Device and method for detecting concentration of particulate matters in air

A particle and concentration technology, applied in particle suspension analysis, measurement device, suspension and porous material analysis, etc., can solve the problems of complex operation, inability to realize real-time detection, low degree of automation, etc., and achieve the effect of no radioactive source.

Active Publication Date: 2017-03-01
XIAMEN NIELL ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The micro-oscillating balance method not only requires manual weighing of the filter membrane before and after sampling like the gravimetric method, so the degree of automation is low and the operation is complicated
In addition, none of the above methods can achieve real-time detection

Method used

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  • Device and method for detecting concentration of particulate matters in air
  • Device and method for detecting concentration of particulate matters in air
  • Device and method for detecting concentration of particulate matters in air

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Embodiment Construction

[0018] figure 1 A block diagram of an apparatus for detecting the concentration of particulate matter in air according to an embodiment of the present invention is shown. Such as figure 1 As shown, the device 100 for detecting the concentration of particulate matter in the air according to the embodiment of the present invention includes a first vibration sensing device 102 and a filtering device 104 .

[0019] The first vibration sensing device 102 moves according to the excitation signal. The first vibration sensing device 102 may be a MEMS (Micro Electro Mechanical System) vibration sensor.

[0020] The excitation signal may be generated by an excitation device. In one embodiment, the excitation signal may be a vibration signal, and the vibration signal is a signal representing information about vibration, and the vibration information includes but not limited to frequency, amplitude, and phase of vibration. In this embodiment, the excitation device may be any device ca...

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Abstract

This disclosure relates to a device and a method for detecting concentration of particulate matters in air. The device includes a first vibration sensing apparatus, which works according to an exciting signal; a filtering apparatus, which is arranged on the first vibration sensing apparatus and is used for filtering air so that the particulate matters and gases within a certain particle size range in air enter the first vibration sensing apparatus, wherein the dynamic characters of the first vibration sensing apparatus are changed under influence of the particulate matters. The concentration of the particulate matters is determined according to a data representing the dynamic characters of the first vibration sensing apparatus, and the data is outputted by the first vibration sensing apparatus.

Description

technical field [0001] The invention relates to the field of atmospheric environment detection, and more particularly, to a device and a method for detecting the concentration of particulate matter in the air. Background technique [0002] As air pollution becomes more and more serious, the detection of the concentration of particulate matter in the air becomes more and more important. At present, the methods for detecting the concentration of particulate matter in the air mainly include the gravimetric method, the β-ray absorption method and the micro-vibration balance method. [0003] The gravimetric method allows a certain volume of air to be sampled to pass through the filter membrane, so that the particulate matter is trapped on the filter membrane, and then the concentration of the particulate matter is calculated according to the difference between the mass of the filter membrane before and after sampling. The β-ray absorption method passes a certain volume of air sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06
Inventor 聂泳忠黄元庆
Owner XIAMEN NIELL ELECTRONICS
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