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Radial plume multi-component gas measurement remote sensing system

A gas measurement and multi-component technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of undiscovered patents and reports, and achieve the effects of improving measurement sensitivity, avoiding noise, and reducing measurement time

Active Publication Date: 2020-05-08
山东铂锐激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the absorption peak of special target gas, multiple small lasers can be integrated to realize the measurement of various gas components, and according to the different cooperation targets in the set area, the moving distribution characteristics of multi-component gas concentration in the three-dimensional area can be realized, so as to realize the radial Plume multi-component gas measurement system, no related patents and reports have been found so far

Method used

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  • Radial plume multi-component gas measurement remote sensing system

Examples

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Effect test

Embodiment 1

[0053] A radial plume multi-component gas measurement remote sensing system such as figure 1 As shown, the number of two lasers is 2. For the convenience of description, the devices that only match the first laser are represented by A, and the devices that are only matched with the second laser are represented by B. Multiple laser systems Except for shared devices, this system includes reflected laser acquisition unit and data acquisition unit;

[0054] The data acquisition unit includes an interconnected data acquisition card and a computer. The data acquisition card 1 can realize functions such as data acquisition and A / D conversion, and transmit the collected photoelectric signal to the computer for calculation and analysis in the computer. The computer at the office is a portable computer, and the reflective laser acquisition unit includes two lasers connected to the data acquisition card, which are laser A2 and laser B21 respectively. The reference absorption cell A4 is ...

Embodiment 2

[0058] A radial plume multi-component gas measurement remote sensing system, the structure is as shown in embodiment 1, the difference is that a vertical scanning mirror (not shown in the figure) is also arranged between the beam expander 8 and the cooperative target reflector 9 Out), the light beam is irradiated to the cooperative target reflector 9 through the vertical scanning mirror along the beam expander 8, and then irradiated to the reflector 10 through the vertical scanning mirror, and converged to the grating 20 through the first lens 11;

[0059] A plurality of lasers, and a beam splitter, a reference absorption cell, a first detector, a beam combiner, a beam expander, a vertical scanning mirror, a reflection mirror, a first lens, a grating, a narrowband filter, and a beam splitter respectively connected to the plurality of lasers, Both the second lens and the second detector are integrated into an integral structure 22, and are arranged on a horizontal rotating platf...

Embodiment 3

[0062] A radial plume multi-component gas measurement remote sensing system, the structure of which is shown in Example 2, the difference is that the vertical scanning mirror is a rotating prism, and its function is to irradiate the horizontal beam to the cooperation target far above or below reflector, and then through the vertical scanning mirror, the light beam is irradiated onto the reflector, and the gas concentration measurement is realized when the cooperative target reflectors are vertically distributed.

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Abstract

The invention relates to a radial plume multi-component gas measurement remote sensing system, which belongs to the field of laser remote sensing measurement, and comprises a reflected laser acquisition unit and a data acquisition unit; the data acquisition unit comprises a data acquisition card and a computer; the reflected laser acquisition unit comprises a plurality of lasers; the light of eachlaser is divided into two paths through a beam splitter, one path is irradiated to a first detector through a reference absorption cell, and the other path of light is irradiated to a beam expander through a beam combiner; a cooperative target reflector, a reflector and a first lens are sequentially arranged along the light paths and are converged to an optical grating, separation of different wavelengths is achieved at the position of the optical grating, light of different wavelengths enters a second detector connected with the data acquisition card through a narrow-band filter and a secondlens, the number of the lasers is two or more, the lasers are modulatable semiconductor lasers, the scanning frequency is larger than 100 Hz, and the modulation frequency is larger than 20 kHz. The system is simple and compact in structure, high in sensitivity and capable of detecting the concentrations of various gases in the air in real time.

Description

technical field [0001] The invention relates to a radial plume multi-component gas measurement remote sensing system, which belongs to the technical field of laser remote sensing measurement. Background technique [0002] Many chemical industrial parks have poisonous and harmful gases such as H 2 S, CH 4 , NH 3 , CO have caused serious pollution to the living air environment of the surrounding population, and caused personal safety to the staff of the chemical industry park. The real-time monitoring of these toxic gases and the monitoring of their spatial distribution and movement characteristics are of great significance. At present, the multi-component gas measurement system adopts mass spectrometry technology and open-path Fourier spectroscopy technology. [0003] At present, mass spectrometry requires sample sampling and sample processing, which takes a long time and cannot perform real-time and regional measurements. The traditional open-circuit Fourier spectromete...

Claims

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Application Information

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IPC IPC(8): G01N21/39
CPCG01N21/39
Inventor 夏金宝叶帅聂鸿坤张百涛杨克健何京良
Owner 山东铂锐激光科技有限公司
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