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Method and apparatus for measuring concentration of multiple medium

A medium and concentration technology, applied in the field of optical measurement, can solve the problems of low accuracy and precision of measurement results, difficulty in implementing measurement methods, etc., and achieve the effect of high degree of automation and easy realization

Inactive Publication Date: 2008-08-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The embodiment of the present invention provides a method and device for measuring the concentration of various media, which can solve the problems of difficulty in implementing existing measurement methods and low accuracy and precision of measurement results

Method used

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  • Method and apparatus for measuring concentration of multiple medium
  • Method and apparatus for measuring concentration of multiple medium
  • Method and apparatus for measuring concentration of multiple medium

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Embodiment Construction

[0025] In the embodiment of the present invention, the particle size of the dust in the area to be measured is divided into multiple particle size ranges, and the dust in each particle size range is determined as a medium. At the same time, each gas whose concentration needs to be measured in the area to be measured is also determined as a medium.

[0026] Acquiring the incident light intensity and transmitted light intensity of a plurality of measuring light waves with different wavelengths in the region to be measured, and obtaining the attenuation coefficients of the various media under each of the measuring light waves;

[0027] According to the acquired incident light intensity, transmitted light intensity and attenuation coefficient information, the respective concentrations of the various media in the region to be measured are calculated simultaneously.

[0028] The processing flow of the method for measuring the concentration of various media provided by the embodiment...

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Abstract

The present invention provides a method for measuring the concentration of a plurality of media. The method mainly comprises the following steps that: a plurality of media needing to have concentration measured in a to-be-measured region are determined; the incident light intensity and transmitted light intensity of a plurality of measuring light waves with different wavelengths in the to-be-measured region; moreover, the light intensity attenuation coefficients of the media respectively corresponding to each measuring wavelength are acquired; according to the information of the acquired incident light intensity, the transmitted light intensity and the light intensity attenuation coefficients, the respective concentrations of the media in the to-be-measured region can be simultaneously figured out. Due to the present invention, concentration measurement can be carried out simultaneously to a variety of dust and a plurality of harmful and inflammable gases with different particle size ranges in coal mines and other industrial places; in addition, measurement process is high in automation degree and easy to realize.

Description

technical field [0001] The invention relates to the field of optical measurement, in particular to a method and a device for measuring the concentrations of various media. Background technique [0002] In the mine environment, dust is very harmful and can induce pneumoconiosis, while coal dust can cause combustion and explosion. Moreover, in mines, dust, gas, carbon dioxide and other harmful and flammable gases are mixed in the air at the same time, which will reduce the respective explosion limits of dust and gas. Therefore, measuring the concentration of dust and gas in the mine is very important to the safe production of the mine. The measurement of gas concentration is also very important in environmental protection, fire and explosion protection, and fault detection. [0003] The first method of measuring the concentration of dust in the prior art is: sampling measurement method. Extract a representative dust-containing gas sample of a certain volume from the area to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17G01N15/06G01N21/61G06F17/10
Inventor 李立京梁生张曦雯张晞许文渊冯秀娟
Owner BEIHANG UNIV