Gas telemetering device and method
A telemetry device and gas technology, applied in the field of gas telemetry, to achieve the effects of wide application scenarios, strong radiant light energy, and easy acquisition
Active Publication Date: 2019-01-15
南京朔宁光电科技有限公司
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Problems solved by technology
Therefore, there is still a lack of devices and technical methods that can effectively realize remote sensing of gases with higher spatial resolution.
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[0048] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0049] The gas telemetry device and method proposed by the present invention focus laser pulses at different focal lengths by means of a continuous zoom optical system and break down air molecules to form plasma. The light energy with continuous spectrum characteristics radiated by the plasma in the initial stage of its evolution is used as the active detection light source for gas absorption spectrum detection. The optical energy radiated by the plasma generated at different focal lengths is collected at the laser pulse emission end, and the absorption spectrum of the gas to be measured in spatial distribution under different optical paths can be detected. Based on the absorption spectra of the gas to be measured obtained at different focal lengths, according to the remote measurement method proposed by the present invention, the detection and map...
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The invention discloses a gas telemetering device, comprising a detecting probe, a rotating head and a control module. The detecting probe comprises a pulse laser emitting cavity, a stepping motor, acontinuous zoom optical system, an acquisition lens and a photoelectric acquisition system, wherein the control module comprises a microcontroller , a delay / pulse signal generator, a pulse laser powersupply and a control system, the microcontroller sends a signal to the delay / pulse signal generator to start a zoom acquisition cycle, receives the output of the photoelectric acquisition system, calculates and stores a differential absorption spectrum of the gas to be tested, the microcontroller repeats a series of zoom acquisition cycles to obtain a series of differential absorption spectrums of the gas to be tested, and calculates the average concentration of the gas to be tested in a series of spatial intervals to obtain a spatial distribution function of the concentration of the gas to be tested. The invention also discloses a gas telemetering method. According to the gas telemetering device and method, the gas can be telemetered at a higher spatial resolution, and the spatial distribution of the gas concentration can be accurately drawn.
Description
technical field [0001] The invention relates to the technical field of gas remote measurement, in particular to a gas remote measurement device and method combining laser-induced plasma and absorption spectrum technology. Background technique [0002] The demand for in-situ, fast, non-contact and high-sensitivity remote sensing detection of gases in a large area widely exists in environmental monitoring, industrial and agricultural production and other fields. The development of big data technology and artificial intelligence technology also puts forward higher technical requirements for the source of information data-sensing technology. For gas telemetry technology, it is not only required to realize the qualitative analysis of the presence or absence of the target gas to be measured by means of gas telemetry, but also to obtain the distribution of gas concentration in the detection area space with a higher spatial resolution, which will be used for subsequent big data and ...
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IPC IPC(8): G01N21/71G01N21/31
CPCG01N21/31G01N21/718
Inventor 王寅
Owner 南京朔宁光电科技有限公司