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Target spectral telemetry device and method for distance-resolved vehicle-borne pollutant gas

A polluting gas and distance resolution technology, which is applied in the direction of measuring devices, color/spectral characteristic measurement, and analysis materials, etc., can solve the problems of simultaneous measurement of multiple components, no distance resolution, laser hazards, etc.

Active Publication Date: 2011-11-30
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Lidar technology is limited by the wavelength of the laser, so it cannot measure multiple components at the same time. When detecting the horizontal distribution of low-level pollution gases, the laser emitted is dangerous and not suitable for gas detection.
Long optical path differential absorption technology requires artificial light source, the system is complicated, and it is not suitable for mobile and flexible detection of the distribution of low-level pollution gases
Passive differential absorption spectroscopy generally pays more attention to the distribution of column concentration in the vertical direction, and does not have the characteristics of distance resolution

Method used

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  • Target spectral telemetry device and method for distance-resolved vehicle-borne pollutant gas
  • Target spectral telemetry device and method for distance-resolved vehicle-borne pollutant gas
  • Target spectral telemetry device and method for distance-resolved vehicle-borne pollutant gas

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Embodiment Construction

[0023] like figure 1 shown. figure 1 In a, the telemetry device at A collects the solar spectrum reflected by the target object and scattered by the atmosphere, combined with the reference spectrum measured by the baffle, and uses the least square method to obtain the concentration C between OA OA ; Similarly, when the car travels to B, the concentration C between OB can be obtained by applying the least square method OB , and then it can be obtained that the concentration C between AB AB , and so on, as the car travels, the concentration between different distances in the horizontal direction can be obtained. figure 1 In b, when the car is stationary, the stepping motor is used to adjust the elevation angle, and the concentration between CD and DE can be obtained by scanning the target object. Similarly, the concentration between different distances in the vertical direction of the lower atmosphere can be obtained according to the height of the target object.

[0024] like...

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Abstract

The invention discloses a vehicle-mounted target spectral remote-sensing device and method for the range resolution of pollutant gas. The device comprises a light guiding system, a monochrometer, a CCD (Charge Coupled Device) detector and a computer, wherein the light guiding system is driven by a stepping motor and an azimuth adjustment motor and provided with a spyglass which is parallelly collimated with the light guiding system. By using the method and device disclosed by the invention, the rapid and multi-component remote-sensing on the horizontal and vertical distribution situations of lower pollutant gas can be realized on a vehicle movable platform based on range resolution. The device and method disclosed by the invention can be applied to atmospheric chemical research, and provide input data for atmospheric chemical models.

Description

technical field [0001] The invention relates to an optical remote sensing measurement method and device, in particular to a target spectrum remote measurement device and method for vehicle-mounted pollutant gas distance resolution. Background technique [0002] An important issue in environmental quality monitoring and atmospheric chemistry research is to map the temporal and spatial distribution of trace gases with higher resolution, and to quickly and flexibly map the air with more motor vehicle emissions, elevated source emissions, or complex terrain structures. The distance-resolved horizontal and vertical distribution of pollutant gases in the lower layers of the earth is even more challenging. [0003] At present, the main methods for remotely measuring the concentration level and vertical distribution of low-level pollutant gases are: laser radar technology, long optical path differential absorption spectroscopy technology, passive differential absorption spectroscopy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27G01N21/01
Inventor 谢品华吴丰成李昂刘文清司福祺方武刘建国
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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