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Device and method for measuring haze main components by using optical fiber active inner cavity method

A smog and inner cavity technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as inability to realize simultaneous gas measurement

Inactive Publication Date: 2019-02-19
YULIN UNIV
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Problems solved by technology

This measurement method cannot achieve simultaneous determination of the concentration of each component of the gas, and the staff must use standard membranes and standard gases to correct and calibrate all analyzers every week

Method used

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  • Device and method for measuring haze main components by using optical fiber active inner cavity method
  • Device and method for measuring haze main components by using optical fiber active inner cavity method

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] A device for measuring the main components of haze by using the optical fiber active cavity method, including a haze generator and a detection system;

[0025] see figure 1 , the smog generator includes a closed tank body, which is provided with a gas inlet 1, anion inlet 2 and gas outlet 3, and a gas inlet valve 4, anion inlet valve 4, anion inlet Valve 5 and gas outlet valve 6;

[0026] see figure 2 , the detection system includes a laser light source 7 and a pump laser 9, the pump laser 9 and the laser light source 7 are connected to the first coupler 8, the first coupler 8 is connected to the erbium-doped fiber amplifier 10 through an optical fiber, and the erbium-doped fiber amplifier 10 is connected to the erbium-doped fiber amplifier through an optical fiber An optical isolator 11, several second couplers 12 connected in series downstream of the optical is...

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Abstract

The invention discloses a device and a method for measuring haze main components by using an optical fiber active inner cavity method. The invention polymerizing haze by the haze generator, haze gas loses activity after polymerization, and then sensing a specific gas in a mixed gas by a fiber sensor and a Bragg grating so as to determine a concentration of the corresponding gas, according to the device and method for measuring haze main components by using optical fiber active inner cavity method, synchronous measurement can be realized, and each measurement instrument does not need to be corrected by using standard membrane or standard gas to instrument, only need to change the gas in the gas box at a time, and the other measurement instruments do not need to be corrected, and the purposeof repeated use of the main instrument of the system can be achieved.

Description

technical field [0001] The invention belongs to the field of optical fiber detection, and in particular relates to a device and method for measuring main components of haze by using an optical fiber active cavity method. Background technique [0002] Optical fibers are widely used in more and more fields due to their own safety, little impact on the environment, and easy networking. In winter, cities in northern China are often plagued by smog, and PM2.5, one of the air indicators, has gradually attracted people's attention. The traditional measurement of PM2.5 is to let a certain flow rate of air pass through the cutter, and under the action of the air pump, separate particles of different diameters, and then measure the concentration separately. This measurement method cannot achieve simultaneous determination of the concentration of each component of the gas, and the staff must use standard membranes and standard gases to correct and calibrate all analyzers every week. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 程君妮蒋晓雁王国章
Owner YULIN UNIV
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