Unlock instant, AI-driven research and patent intelligence for your innovation.

A background estimation method and system for spectral gas detection

A technology for gas detection and background estimation, applied in the field of spectral analysis, can solve problems such as inability to detect, and achieve the effect of improving the signal-to-noise ratio and the estimation accuracy

Active Publication Date: 2022-06-24
HUBEI JIUZHIYANG INFRARED SYST CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a background estimation method and system for spectral gas detection, which estimates the background spectrum of the known target gas, and solves the problem that the gas detection algorithm based on the background acquisition method is difficult to obtain the gas background. undetectable problems

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A background estimation method and system for spectral gas detection
  • A background estimation method and system for spectral gas detection
  • A background estimation method and system for spectral gas detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings:

[0049] Before the background spectrum estimation is performed in the present invention, the standard spectrum of the target gas for which background estimation is to be performed needs to be known in advance, and then the background radiation of the target gas in the detection area can be estimated. The present invention collects a hyperspectral image by performing spectral gas detection on the region where the target gas exists; then calculates the spectral abundance value corresponding to each pixel of the hyperspectral image, and compares it with a preset abundance threshold to detect The area is divided into target area and non-target area; then clustering processing is performed to group pixels with large similarity together, thereby improving the estimation accuracy of the background spectrum; after clustering, dimensionality reduction processing is performed ...

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

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of spectral analysis, and provides a background estimation method and system for spectral gas detection. The method estimates the background spectrum of the target gas for specific occasions, thereby solving the problem of traditional gas detection based on background collection methods. Algorithmic detection challenges in situations where gas backgrounds are difficult to obtain. The method includes the following steps: first, the abundance value is calculated by using the collected spectral image, and compared with the abundance threshold, the detected area is divided into target area and non-target area; then the target area is clustered to obtain at least one The target category and the corresponding target category matrix; perform dimensionality reduction on the target category matrix; find out the background band matrix, and finally calculate the background radiation of the target gas in each detection area corresponding to the target category. The invention estimates the background spectrum of the whole band through the spectrum of the background band, and completes the conversion of the spectrum containing the target spectral information into the spectrum containing only the background information.

Description

technical field [0001] The invention relates to the technical field of spectral analysis, in particular to a background estimation method and system for spectral gas detection. Background technique [0002] Spectral analysis is one of the important methods for gas detection and concentration analysis. In recent years, with the improvement of data processing, data transmission, and data storage technology, spectral analysis has begun to be applied to on-site gas analysis. When using spectral equipment for gas detection, it is often necessary to know the spectral background of the gas to be measured in advance. According to Beer's Law, the gas transmission rate is the basic variable for quantitative detection. When measuring transmittance, the empty background must be determined. When the empty background cannot be obtained, the gas quantitative detection cannot be completed. Therefore, it is necessary to estimate the background spectrum of the known target gas, so as to s...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G06T7/11G06T7/136G06T3/00G06K9/62G06V10/762
CPCG01N21/25G06T7/11G06T7/136G06T3/0031G06F18/23213
Inventor 岳松王波洪普贾国伟彭堂超
Owner HUBEI JIUZHIYANG INFRARED SYST CO LTD