Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Raman spectrum signal-to-noise ratio evaluation method

A technology of Raman spectroscopy and signal-to-noise ratio, applied in the field of CCD spectrometer, can solve problems such as poor applicability

Active Publication Date: 2020-08-21
南京简智仪器设备有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The type of noise changes, which leads to the deterioration of the applicability of the original spectral quality evaluation method. It is of great practical significance to propose a more adaptable spectral quality evaluation method based on the measured spectrum.

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 Raman spectrum signal-to-noise ratio evaluation method
  • A Raman spectrum signal-to-noise ratio evaluation method
  • A Raman spectrum signal-to-noise ratio evaluation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A Raman spectrum signal-to-noise ratio evaluation method, comprising the steps of:

[0024] (1) CCD spectrometer spectrogram extreme point spacing statistics; use the same standard sample, fixed integration time, collect Raman spectra multiple times, and classify and count the spectra with different superimposed average times according to the extreme point spacing in the spectrogram ;

[0025] (2) Determine the CCD dark current noise; according to the statistical results of classification in (1), determine the pixel spacing threshold, and use the average value of the extreme difference between adjacent extreme points with short spacing and classification counts that do not increase with the average number of spectrogram superimpositions as Noise, corresponding to the average power per unit time of the dark noise of the Raman spectrometer;

[0026] (3) Signal-to-noise ratio calculation; the signal-to-noise ratio of the CCD spectrometer is defined as: SNR=S / Noise, wherei...

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 discloses a Raman spectrum signal-to-noise ratio evaluation method which comprises the following steps: (1) counting intervals of extreme values of spectrums of a CCD (Charge Coupled Device) spectrograph; (2) confirming CCD dark current noise; (3) calculating a signal-to-noise ratio. The invention discloses a simple, convenient and feasible signal-to-noise ratio evaluation method, the signal-to-noise ratio acquired by an equipment Raman spectrum can be estimated according to single spectrums, theories and experiments show that for a Raman spectrograph based on a CCD detector, when a sample and a characteristic peak are confirmed, a signal-to-noise ratio can be acquired on the basis of the method, Raman spectrum equipment of different configurations can be compared, and as a standard for controlling consistence of spectrum quality, the method has instruction significances for development of intelligent identification systems based on Raman spectrum techniques.

Description

technical field [0001] The invention relates to the technical field of CCD spectrometers, in particular to a fast and effective Raman spectrum signal-to-noise ratio evaluation method. Background technique [0002] In recent years, the rapid development of CCD spectrometer modules has promoted the development of portable spectrometers, and the portable Raman spectrometer based on CCD spectrometers is not only used in scientific research, but also in military and civilian fields due to its rapidity and non-destructiveness to samples. areas are outstanding. For spectral analysis, stable and accurate evaluation of spectral quality is very important, and Raman spectral signal-to-noise ratio determines whether the characteristic signal of the measured sample itself can be effectively extracted from background interference, and is an important parameter for equipment comparison. [0003] The traditional spectral detector is based on the moving grating principle and the single-poin...

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
IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 刘峰刘恩凯王梓儒殷磊蔡圣闻
Owner 南京简智仪器设备有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com