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Lossless method for measuring content of bagged complex solution components

A complex and solution technology, applied in the direction of measuring devices, color/spectral characteristic measurement, and analysis of materials, to eliminate the impact of changes and packaging bags, solve non-destructive testing problems, and measure highly targeted effects

Inactive Publication Date: 2017-09-19
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The invention provides a method for non-destructively measuring the component content of bagged complex solutions, which has strong measurement pertinence, eliminates the influence of spectral background noise, changes in transmitted light sources and packaging bags, suppresses the nonlinearity of spectra, and greatly improves the performance of complex solutions. The accuracy of component content analysis solves the problem of non-destructive testing of complex solutions in bags, with high efficiency and no pollution. See the description below for details:

Method used

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  • Lossless method for measuring content of bagged complex solution components
  • Lossless method for measuring content of bagged complex solution components
  • Lossless method for measuring content of bagged complex solution components

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Experimental program
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Embodiment 1

[0078] The embodiment of the present invention provides a method for non-destructively measuring the content of complex solution in bags, the devices used are such as image 3 As shown, it includes: a light source 3 , a packaging bag 5 , a displacement platform 6 , a spectrum receiving device 7 and a modulation device 9 .

[0079] Wherein, ensure that the light output port of the light source 3 and the incident slit of the spectrum receiving device 7 are close to the packaging bag 5, and the modulating device 9 modulates the light source 3 so that it sends out a square-wave light signal, and the light source 3 is at the position a under the two optical paths that are : position a (corresponding to the first optical path 1) and position a' (corresponding to the second optical path 2) transmit and excite the complex solution sample in the packaging bag 5, and the transmission spectrum and the fluorescence spectrum are collected by the spectrum receiving device 7; then Control th...

Embodiment 2

[0088] The difference between the embodiment of the present invention and embodiment 1 is only that the light source 3 and the movement mode of the spectrum receiving device 7 are different, see the following description for details:

[0089] see Figure 4 To ensure that the light outlet of the light source 3 and the incident slit of the spectrum receiving device 7 are close to the packaging bag 5, the modulation device 9 modulates the light source 3 so that it sends out a square wave light signal, and the light source 3 transmits and absorbs the complex solution sample in the packaging bag 5 Excited, the spectrum receiving device 7 collects the transmission spectrum and the fluorescence spectrum under the double optical path at position a, namely: position a and position a'. Control the spectrum receiving device 7 to move to the position b through the displacement platform 6, and collect the transmission spectrum and the fluorescence spectrum at the position b under the doubl...

Embodiment 3

[0094] During specific implementation, due to the limitation of the space structure, it may occur that the light source 3 and the spectrum receiving device 7 cannot be close to the packaging bag 5. At this time, an optical fiber can be respectively arranged at the light source 3 and the spectrum receiving device 7 as the incident optical fiber 4 and outgoing optical fiber 8.

[0095] see Figure 5 , the modulation device 9 modulates the light source 3 to make it emit a square wave light signal, the light source 3 transmits and excites the complex solution sample in the packaging bag 5 through the incident optical fiber 4, and the spectrum receiving device 7 collects the transmission spectrum and the fluorescence spectrum through the outgoing optical fiber 8, The incident optical fiber 4 and the outgoing optical fiber 8 are respectively close to the packaging bag 5, the incident optical fiber 4 is at position a, and the light source 3 passes through the incident optical fiber 4...

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Abstract

The invention discloses a lossless method for measuring the content of bagged complex solution components. The method comprises the steps as follows: a modulation device modulates light sources which comprise a transmission light source and a fluorescence excitation light source, a displacement platform controls the light sources to move to double-optical-path points in multiple positions for transmission and excitation of the complex solution respectively, and a spectral receiving device is used for collecting transmission and fluorescence spectra; time series are converted into frequency domains, the transmission spectra in the frequency domain and the fluorescence spectra in the frequency domain are constructed, the ratio of transmission spectra in the two frequency domains in each position is subjected to logarithm calculation, the logarithm is the absorption spectrum of the complex solution in the position, the absorption spectra in the multiple positions and the fluorescence spectra in the double-optical-path frequency domains in the multiple positions are normalized together, results are compared with results of existing chemical analysis, and a mathematical model is established. Absorption spectra under multiple positions and fluorescence spectra in the frequency domains of an unknown complex solution are collected with the same method, normalized and substituted into the mathematical model, and the content of a measured target component is obtained.

Description

technical field [0001] The invention relates to the field of spectroscopic complex solution concentration analysis stoichiometry, in particular to a method for non-destructively measuring the component content of a bagged complex solution. Background technique [0002] In the prior art, the relatively mature technology is to detect the content of the target component measured in the complex solution in the packaging bag through chemical inspection, which has the outstanding advantage of high accuracy, but the chemical inspection method cannot meet the requirements of fast, non-contact, and pollution-free. Due to its non-contact and non-polluting characteristics, spectroscopic measurement may also realize the content detection of the target components measured in complex solutions in packaging bags. [0003] In spectral detection, according to the Lambert-Beer law: measure the incident light intensity I at each wavelength separately 0 and the outgoing light intensity I, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/64
CPCG01N21/25G01N21/255G01N21/64G01N21/6402G01N2021/6417G01N2021/6491
Inventor 李刚张梦秋张盛昭罗永顺林凌
Owner TIANJIN UNIV
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