A gaseous substance detection device based on transparent capillary structure and fluorescence

A technology of gaseous substances and detection devices, applied in fluorescence/phosphorescence, material excitation analysis, etc., can solve problems such as background noise increase, abnormal output changes, light conduction interference, etc., to reduce signal background noise, enhance fluorescence intensity, enhance Effect of fluorescent signal
CN104677876BActive Publication Date: 2017-11-24LINHAI OUXUN ELECTRONICS TECH
7 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
LINHAI OUXUN ELECTRONICS TECH
Publication Date
2017-11-24

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a gaseous substance detection device based on a transparent capillary structure and fluorescence, comprising a light source system arranged on a capillary base, a fluorescent coating capillary, and a detection system, and the detection system and the light source system are perpendicular to the wall of the fluorescent coating capillary The detection system and the light source system are set at 90 degrees. The light source system includes an LED light source, a collimation system, and a first optical filter connected in sequence. The detection system includes a detector and a second optical filter. The light source and the detector of the present invention are arranged at 90 degrees along the wall of the fluorescent coating capillary tube, avoiding the direct irradiation of the excitation light on the detector, the optical path is short, and the influence of water vapor is reduced, and the second filter is isolated from the gas path and will not be affected Gas pollution; the setting of the casing can reduce the stray light of the excitation light, enhance the fluorescence intensity and signal intensity; reduce the background noise of the signal, and reduce the influence of water vapor and dust adhesion in the detection gas.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a gas detection device, in particular to a gaseous substance detection device based on a transparent capillary structure and fluorescence. Background technique

[0002] The gaseous substance detection and analysis technology using the intensity change of the coating fluorescence on the inner wall of the capillary is an effective detection and analysis technology for trace substances. At present, the devices using this technology usually have two forms. One is to coat the inner wall of the capillary The light source hits the coating on the inner wall to produce fluorescence. The light source and detector are placed on both sides of the capillary relative to each other. The filter on the light source side filters out the part of the excitation light that overlaps with the fluorescence wavelength, and the filter on the detector side Select the wavelength band of interest in fluorescence, filter out the excitation light, and the ga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More