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

Background dark noise subtraction method of Raman spectrometer using grating array detector

A Raman spectrometer and grating array technology, which is applied in the field of rapid deduction of background dark noise of Raman spectrometers, can solve the problems of large measurement error and high measurement cost, and achieve the effects of small measurement error, low measurement cost and short time-consuming.

Active Publication Date: 2019-08-09
奥谱佳测(江苏)信息科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for subtracting background dark noise of a Raman spectrometer using a grating array detector, so as to solve the above-mentioned shortcomings of high measurement cost and large measurement error in the prior art

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
  • Background dark noise subtraction method of Raman spectrometer using grating array detector
  • Background dark noise subtraction method of Raman spectrometer using grating array detector
  • Background dark noise subtraction method of Raman spectrometer using grating array detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for subtracting background dark noise of a Raman spectrometer using a grating array detector, the method is based on the background noise subtraction in the Raman spectrum of acetaminophen excited at 532nm as an example, comprising the following steps:

[0052] First, select the integration time of 1s, and compare the Raman spectra of acetaminophen measured according to the dark noise subtraction method of the current instrument and without dark signal subtraction, see figure 1 ,exist figure 1 Among them, P1 is the Raman spectrum signal of acetaminophen measured after subtracting dark noise, and P2 is the Raman spectrum signal of paracetamol measured without dark noise.

[0053] 1) Determine the base space matrix of the spectrometer:

[0054] 1-1) Select a spectrometer excited at 532nm, record 100 dark noise data with an integration time of 10ms, and then record the average output of the 100 dark noise data;

[0055] 1-2) Adjust the integration time to 20ms...

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 present invention provides a background dark noise subtraction method for a Raman spectrometer using a grating array detector, and relates to a background dark noise deduction method of a spectrometer. The method comprises: pre-storing an array dark response sequence to form an array detector base space matrix; after performing eigenvalue decomposition on the array detector base space matrix and an actual response signal, extracting a second eigenvector; and restoring a detection signal deducting the background of the array detector to implement quick deduction of the spectral background dark noise. According to the method provided by the present invention, there is no need to record the dark noise condition each time, so that not only the measurement time is saved, the work efficiencyis improved, the measurement cost is reduced, and the error of the drift measurement over the time is reduced, but also for the continuous measurement of the process, the operations of stopping to correct the drift and the like can be eliminated, and great convenience is provided for continuous dynamic correction.

Description

technical field [0001] The invention relates to a background dark noise subtraction method of a spectrometer, in particular to a fast background dark noise subtraction method of a Raman spectrometer using a grating array detector. Background technique [0002] The rapid development of Raman spectroscopy is mainly due to the development of laser technology and the application of grating array detectors. CCD and CMOS array photodetectors can obtain spectral information of sufficient pixels at the same time, meet the requirements of Raman spectroscopy for fast response, significantly shorten the spectrum acquisition time, and enhance the practicability of Raman spectrometers. The mainstream structural form of the instrument. [0003] The photosensitive elements all have random noise response. Due to the randomness in the manufacture of the photosensitive elements collected by the array, each photosensitive point is random. From the signal performance point of view, the random ...

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 姚志湘姚桔粟晖张景清
Owner 奥谱佳测(江苏)信息科技有限公司