System and method for quickly monitoring two-dimensional distribution of airborne atmospheric trace gases

A trace gas, two-dimensional distribution technology, applied in measurement devices, analytical materials, color/spectral characteristics measurement, etc., to achieve the effect of high spectrometer resolution and increase of receiving size

Active Publication Date: 2012-05-02
合肥中科环境监测技术国家工程实验室有限公司
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Problems solved by technology

Realize rapid monitoring of two-dimension

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  • System and method for quickly monitoring two-dimensional distribution of airborne atmospheric trace gases
  • System and method for quickly monitoring two-dimensional distribution of airborne atmospheric trace gases
  • System and method for quickly monitoring two-dimensional distribution of airborne atmospheric trace gases

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[0015] See attached picture. figure 1 Scattered light from the ground surface and sky as incident light 8 passes through the plane reflector and enters the concave reflector 9, and is reflected from the concave reflector 9 onto the convex grating 10, and the dispersed light emitted by the convex grating 10 is reflected by the concave reflector to form outgoing light 11, and then received by the area array CCD detector, the incident light 8 and the outgoing light 11 are located on the same side of the convex grating 10.

[0016] figure 2 The shown airborne atmospheric trace gas two-dimensional distribution fast monitoring system includes an imaging spectrometer 1, the imaging spectrometer is externally connected to a control unit, and the imaging spectrometer is provided with an optical receiving system, an area array CCD detector, an optical The receiving system uses figure 1 The structure includes an ultraviolet lens 2 installed on the housing of the imaging spectrometer, ...

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Abstract

The invention discloses a system for quickly monitoring two-dimensional distribution of airborne atmospheric trace gases, which comprises an imaging spectrometer; the imaging spectrometer is externally connected with a control unit; an optical receiving system and a CCD (Charge Coupled Device) detector are arranged in the imaging spectrometer; the optical receiving system comprises an ultraviolet lens arranged on an imaging spectrometer housing; a plane reflection mirror facing to the ultraviolet lens is arranged in the housing; a concave surface reflection mirror is arranged in a light path in front of the plane reflection mirror; a convex surface grating is arranged on the reflection surface of the concave surface reflection mirror; incident light passes through the concave surface reflection mirror and the convex surface grating in sequence after being emitted by the ultraviolet lens; emergent light is received by the CCD detector; and the incident light and the emergent light are located at the same side of the convex surface grating. According to the invention, high spectral resolution and spatial resolution can be realized at the same time by the imaging spectrometer based on the convex surface grating capable of enabling the incident light and the emergent light to be located at the same side of the convex surface grating.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, in particular to an airborne airborne trace gas two-dimensional distribution rapid monitoring system and method for regional environmental monitoring. Background technique [0002] The general convex grating imaging spectrometer adopts the design of the incident light and the outgoing light on both sides of the convex grating. Such an imaging spectrometer cannot meet the requirements of high spectral resolution. Generally, the spectral resolution of the convex grating spectrometer is greater than 1nm. The airborne atmospheric trace gas monitoring requires the imaging spectrometer to have a resolution better than 0.5nm, and the above-mentioned design where the incident and exit are located on both sides cannot meet the requirements. Contents of the invention [0003] The purpose of the present invention is to realize the rapid monitoring of regional pollution, and to invent an a...

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Application Information

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IPC IPC(8): G01N21/31G01N21/01
Inventor 司福祺谢品华周海金江宇窦科刘宇刘文清
Owner 合肥中科环境监测技术国家工程实验室有限公司
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