CN107167477A - Lower pair of light path transmission of multiposition and the method for fluorescence spectral measuring complicated solution composition - Google Patents
Lower pair of light path transmission of multiposition and the method for fluorescence spectral measuring complicated solution composition Download PDFInfo
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- CN107167477A CN107167477A CN201710529514.XA CN201710529514A CN107167477A CN 107167477 A CN107167477 A CN 107167477A CN 201710529514 A CN201710529514 A CN 201710529514A CN 107167477 A CN107167477 A CN 107167477A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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Abstract
The invention discloses a kind of lower pair of light path transmission of multiposition and the method for fluorescence spectral measuring complicated solution composition, methods described includes：Displacement platform control light source is moved to multiple positions and complicated solution is transmitted and excited respectively, and the transmission of double light paths and fluorescence spectrum under each position are gathered by spectrum acquisition device；Transmitted spectrum ratio under the double light paths that will be collected under at each position seeks the absorption spectrum that logarithm is complicated solution under the position, by double light path fluorescence spectrums under the absorption spectrum at multiple positions and multiple positions together normalized, with the Comparative result of existing chemical analysis, founding mathematical models；Gather the transmitted spectrum and fluorescence spectrum of double light paths under the multiple positions of unknown complex solution, absorption spectrum is asked to the transmitted spectrum under double light paths for collecting under at each position, double light path fluorescence spectrums under absorption spectrum at multiple positions and multiple positions are normalized and brings mathematical modeling into and is calculated, the content of surveyed target component is obtained.
Description
Technical field
The present invention relates to spectrum complicated solution concentration analysis stoichiometry field, more particularly to a kind of lower pair of light path of multiposition
Transmission and the method for fluorescence spectral measuring complicated solution composition.
Background technology
In the prior art, the technology of more maturation is to detect that complicated solution surveys target in packaging bag by chemical analysis
The content of composition, the mode with the high outstanding advantages of accuracy, but chemical analysis can not meet quickly, noncontact, Yi Jiwu
The demand of pollution, spectral measurement is also possible to realize that complicated solution is surveyed in packaging bag by its noncontact, free of contamination characteristic
The content detection of target component.
In spectral detection, according to Lambert-Beer's law：The incident intensity I of each wavelength is measured respectively0And output intensity
I, the absorbance A of each wavelength is calculated by formula (1).∈ is material absorptivity under a certain wavelength, and c is dense for material
Degree, b is optical path length.
In fact, failing measurement incident intensity I for various reasons0, for example：Incident intensity I0It is difficult to measure by force very much, but
If in incident intensity I0It is basicly stable it is constant in the case of, only measurement an output intensity I can also obtain good result.But
Influence that spectral detection changes due to light source and measure the influence of container and be difficult to reach the precision for measuring needs.
The influence of light source is mainly shown as the change of spatial distribution and light intensity.The reason for light source changes is caused to have a lot, such as
Light source voltage change, filament aging, variation of ambient temperature etc..In spectrum analysis, rarely have document to introduce light source to measurement accuracy
Influence, and reduce the intensity of light source change on measurement accuracy influence method.In research in the early time, with the mode of calibration come
Some interference are eliminated, are such as calibrated with water, but are due to that light intensity is too strong, are difficult to operate in practice.Also have in many scholars' utilizations
Property attenuator or optical fibre light splitting mode measure incident intensity I0.By taking neutral filter as an example (following discussion unless stated otherwise,
Discussed on some wavelength), the output intensity I that measurement passes through neutral filtern, then the light intensity I of light source0 nAbsorbance can be used
A and output intensity InTo represent：
Then sample is replaced into neutral filter, measures the output intensity I of sampleS,
NoticeSo
Formula does not have in (4)(namely) occur, illustrate that the intensity (and its spectrum) of light source does not interfere with the survey to sample
Amount, as long as all measurements keep lgI all using the calibration of same neutral attenuatorn+AnFor constant constant.
But different occasions are difficult to find duplicate neutral filter, and it is difficult to ensure that the position of sample and neutral filter
Put consistent.For the complexity of complicated solution composition, what simple transmitted spectrum was obtained is the information of whole complicated solution compositions,
Specific aim is poor, and is the measurement accuracy that further raising complicated solution surveys target component, with reference to glimmering with certain scattering
The characteristics of light is with strong points, but influenceed by fluorescence excitation light intensity, optical length and surveyed constituent concentration, cause fluorescence to have sternly
The self-absorption problem of weight, and influenceed by the characteristic of complicated solution strong scattering, cause obtained fluorescence spectrum to have very strong
It is non-linear, therefore the feature of surveyed material can not be reacted well.
The content of the invention
The invention provides a kind of lower pair of light path transmission of multiposition and the method for fluorescence spectral measuring complicated solution composition, survey
Amount is with strong points, eliminates the influence of transmitted light source change and packaging bag, greatly improves the analysis of complicated solution component content
Precision, solves the problems, such as the Non-Destructive Testing of packed complicated solution, efficient, pollution-free, described below：
A kind of lower pair of light path transmission of multiposition and the method for fluorescence spectral measuring complicated solution composition, methods described are used to survey
The component content of complicated solution in packaging bag is measured, be the described method comprises the following steps：
The light extraction optical port of light source is close to packaging bag with the entrance slit of spectrum acquisition device, and light source includes transmitted light source and glimmering
Phot-luminescence source, transmitted light source is transmitted to complicated solution, and fluorescent exciting source excitation complicated solution produces fluorescence, and spectrum connects
Receiving apparatus acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control transmitted light source is moved at two under multiple positions different light paths with fluorescence excitation light source, by
Spectrum acquisition device gathers double light path transmitted spectrums and double light path fluorescence spectrums under each position；
By the transmitted spectrum ratio under collected under each position two light paths ask logarithm be under the position it is complicated molten
The absorption spectrum of liquid, double light path fluorescence spectrums under the absorption spectrum at multiple positions and multiple positions are normalized together
Processing, the Comparative result with existing chemical analysis, founding mathematical models；
The transmitted spectrum and fluorescence spectrum of double light paths of the unknown complex solution under multiple positions are gathered, by under each position
Transmitted spectrum ratio under two light paths collected seeks the absorption spectrum that logarithm is complicated solution under the position；
Double light path fluorescence spectrums under absorption spectrum at multiple positions and multiple positions are normalized, and bring number into
Learn model to be calculated, obtain the content that complicated solution surveys target component；
Methods described increases the material that is stimulated by gathering the transmission of double light paths and fluorescence spectrum at packaging bag diverse location
Information content；Suppress the non-linear of spectrum；Eliminate the influence of transmitted light source change and packaging bag；Improve complicated solution component content
The precision of analysis；Solve the problems, such as the Non-Destructive Testing of packed complicated solution.
Wherein, displacement platform control transmitted light source and two different light paths that fluorescence excitation light source is moved under multiple positions
Locate, the step of double light path transmitted spectrums and double light path fluorescence spectrums under each position are gathered by spectrum acquisition device is specially：
At a of position, displacement platform control transmitted light source and fluorescence excitation light source are respectively under two light paths：Position a
Complicated solution is transmitted and excited with position a ', by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform controls transmitted light source and fluorescence excitation light source to be moved to position b, respectively under two light paths i.e.：Position
B and position b ' are transmitted and excited to complicated solution, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform controls transmitted light source and fluorescence excitation light source to be moved to position n always, respectively under two light paths i.e.：
Position n and position n ' are transmitted and excited to complicated solution, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Or,
Transmitted light source and fluorescence excitation light source are transmitted and excited to the complicated solution in packaging bag, spectrum acquisition device
At a of position, displacement platform control spectrum acquisition device is respectively under two light paths：Position a and position a ' places acquisition of transmission
Spectrum and fluorescence spectrum；
Displacement platform control spectrum acquisition device is moved to position b, respectively under two light paths i.e.：Position b and position b '
Locate acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control spectrum acquisition device is moved to position n always, respectively under two light paths i.e.：Position n and position
Put n ' places acquisition of transmission spectrum and fluorescence spectrum.
Methods described also includes：
One optical fiber is set at light source, as incident optical, and ensures the incident narrow of incident optical and spectrum acquisition device
Seam is close to packaging bag；
Or,
One optical fiber is set at spectrum acquisition device, as the output optical fiber, and ensures the output optical fiber and light source light extraction optical port
It is close to packaging bag；
Or,
Incident optical and the output optical fiber are set respectively at light source and spectrum acquisition device, and ensure incident optical and outgoing
Optical fiber is close to packaging bag.
Incident optical is at a of position, and transmitted light source and fluorescence excitation light source are distinguished under two light paths i.e. by incident optical：
Position a and position a ' places are transmitted and excited to complicated solution, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control incident optical is moved at the b of position, and transmitted light source and fluorescence excitation light source pass through incident optical
Respectively under two light paths at the position i.e.：Complicated solution is transmitted and excited at position b and position b, by spectrum acquisition
Device acquisition of transmission spectrum and fluorescence spectrum；
Control incident optical is moved at the n of position always, and transmitted light source and fluorescence excitation light source are distinguished by incident optical
Under two light paths at the position i.e.：Position n and position n ' places are transmitted and excited to complicated solution, by spectrum acquisition device
Acquisition of transmission spectrum and fluorescence spectrum.
The output optical fiber at a of position, by spectrum acquisition device by the output optical fiber under the light path of the position two i.e.：Position
Put a and position a ' places acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control the output optical fiber is moved at the b of position, and spectrum acquisition device is by the output optical fiber at the position
Under two light paths i.e.：Position b and position b ' places acquisition of transmission spectrum and fluorescence spectrum；
Control the output optical fiber is moved at the n of position always, and spectrum acquisition device is by the output optical fiber two at the position
Under light path i.e.：Position n and position n ' places acquisition of transmission spectrum and fluorescence spectrum.
Further, the transmitted light source be super continuous wide range laser, the super continuous wide range laser covering visible light wave band,
Or near infrared light wave band, or both combination；Fluorescence excitation light source is ultraviolet lamp, and transmitted light source and fluorescence excitation light source can be straight
Sending and receiving light conducts through incident optical.
Further, institute's translation stage is stepper motor；The spectrum acquisition device is spectrometer.
Further, the transmitted light source be xenon lamp wide spectrum light source or bromine tungsten filament lamp wide spectrum light source, covering visible light wave band or
Near infrared light wave band, or both combination；The fluorescence excitation light source be ultraviolet laser tube or ultra-violet light-emitting pipe, transmitted light source and
Fluorescence excitation light source can directly light or be conducted through incident optical.
Further, the mathematical modeling utilizes principal component analysis, artificial neural network, PLS, support
Vector machine, signal analysis or statistical method are set up.
The beneficial effect for the technical scheme that the present invention is provided is：
1st, the present invention changes position and light path by command displacement platform, under different optical lengths at multiple positions, collection
It is glimmering that the transmitted spectrum and same fluorescent exciting source excitation that packed complicated solution is transmitted generation by same transmitted light source are produced
Light spectrum；
2nd, the characteristic of fluorescence can be produced by ultraviolet excitation using particular matter in complicated solution, but on light path direction
Different fluorescence intensities are produced with the incident depth difference of ultraviolet light, excite fluorescence to produce position different from the distance of receiving position
It can cause the self-absorption of fluorescence different, and the material that is stimulated in complicated solution is influenceed by other material concentrations simultaneously, when
Ultraviolet light is by the more of other material absorbings, and the ultraviolet light that the material that can be excited is received is fewer, and can be by complicated solution
The influence of scattering, therefore it is very strong non-linear to cause the spectrum obtained to have；
3rd, it is the coefficient spectrum of above-mentioned factor to measure obtained spectrum under double light paths at multiposition, adds and is stimulated
The information content of material, greatly inhibits the non-linear of spectrum, and measures with strong points, eliminates transmitted light source change and packaging bag
Influence, greatly improve complicated solution component content analysis precision.Solve the Non-Destructive Testing of packed complicated solution composition
Problem, it is efficient, pollution-free.
Brief description of the drawings
Fig. 1 is double light path transmitted spectrum schematic diagrams；
Fig. 2 is that the method for lower pair of light path transmission of multiposition and fluorescence spectral measuring complicated solution composition in embodiment 1 is illustrated
Figure；
Fig. 3 is that the method for lower pair of light path transmission of multiposition and fluorescence spectral measuring complicated solution composition in embodiment 2 is another
Schematic diagram；
Fig. 4 is that the method for lower pair of light path transmission of multiposition and fluorescence spectral measuring complicated solution composition in embodiment 3 is another
Schematic diagram；
Fig. 5 is that the method for lower pair of light path transmission of multiposition and fluorescence spectral measuring complicated solution composition in embodiment 4 is another
Schematic diagram；
Fig. 6 is that the method for lower pair of light path transmission of multiposition and fluorescence spectral measuring complicated solution composition in embodiment 5 is another
Schematic diagram；
Fig. 7 is that the method for lower pair of light path transmission of multiposition and fluorescence spectral measuring complicated solution composition in embodiment 6 is another
Schematic diagram.
In accompanying drawing, the list of parts representated by each label is as follows：
1：First light path； 2：Second light path；
3：Light source：Including transmitted light source and fluorescence excitation light source； 4：Incident optical；
5：Packaging bag； 6：Displacement platform；
7：Spectrum acquisition device； 8：The output optical fiber；
a、b…n；A ', b ' ... n ' are：It is close to the position of packaging bag.
Situation of the above-mentioned position in practical application is set, and need to ensure a and a '；B and b ' ... n and n ' positions are same
Axle.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, further is made to embodiment of the present invention below
It is described in detail on ground.
Double light path transmission spectrum methods are according to Lambert-Beer's law, as shown in figure 1, setting the first light path 1 and second respectively
Light path 2.Derivation is as follows：
Wherein, A1It is the absorbance of the first light path 1, A2It is the absorbance of the second light path 2.IOIt is the incident light of the first light path 1
Light intensity, while being also the light intensity of the incident light of the second light path 2, I1It is the output intensity of the first light path 1, I2It is the second light path 2
Output intensity, b1It is the optical length of the first light path 1, b2It is the optical length of the second light path 2, △ b are the difference of two optical lengths, ∈ extinctions
Coefficient is that c surveys material concentration.
The absorbance of double light path spectroscopic methodologies is still linear with optical path difference it can be seen from formula (7), meet lambert-
Beer law, and with light intensity of incident light IOIt is unrelated.Therefore, double light path methods are not influenceed by light source in theory, are deducted simultaneously
The influence of packaging bag in itself.
The present invention can be produced the characteristic of fluorescence by ultraviolet excitation using particular matter in complicated solution, but in light path side
Different fluorescence intensities are produced with the incident depth difference of ultraviolet light upwards, excite fluorescence to produce the distance of position and receiving position
Difference can cause the self-absorption of fluorescence different, and the material that is stimulated in complicated solution is simultaneously by the shadow of other material concentrations
Ring, when ultraviolet light is by the more of other material absorbings, the ultraviolet light that the material that can be excited is received is fewer, and can be by complexity
The influence of solution scattering, therefore it is very strong non-linear to cause the spectrum obtained to have.And measure and obtain under double light paths at multiposition
Spectrum be the coefficient spectrum of above-mentioned factor, add the information content for the material that is stimulated, greatly inhibit the non-thread of spectrum
Property, and measure with strong points, the influence of transmitted light source change and packaging bag is eliminated, complicated solution component content is greatly improved
The precision of analysis.The Non-Destructive Testing of packed complicated solution is solved the problems, such as, it is efficient, pollution-free.
Embodiment 1
Lower pair of light path transmission of multiposition provided in an embodiment of the present invention and the method for fluorescence spectral measuring complicated solution composition,
The device that uses as shown in Fig. 2 including：Light source 3, packaging bag 5, displacement platform 6 and spectrum acquisition device 7.
Wherein, it is ensured that the light extraction optical port of light source 3 is close to packaging bag 5 with the entrance slit of spectrum acquisition device 7, light source 3 exists
Under two light paths at a of position i.e.：Position a (the first light path 1 of correspondence) and position a ' (the second light path 2 of correspondence) are in packaging bag 5
Complicated solution transmitted and excited, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum；It is then flat by displacement
The control light source 3 of platform 6 is moved to position b, under two light paths at the b of position i.e.：Position b (the first light path 1 of correspondence) and position b '
(the second light path 2 of correspondence) is transmitted and excited to the complicated solution in packaging bag 5, by the acquisition of transmission light of spectrum acquisition device 7
Spectrum and fluorescence spectrum；Control light source 3 to be moved to position n always by displacement platform 6, under two light paths at the n of position i.e.：Position
Put n (the first light path 1 of correspondence) and position n ' (the second light path 2 of correspondence) transmitted and excited to the complicated solution in packaging bag 5,
By the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum.
Transmitted spectrum ratio under two light paths that will be collected under at each position asks logarithm to be complicated under the position
The absorption spectrum of solution, at double light path fluorescence spectrums under the absorption spectrum at multiple positions and multiple positions together normalization
Reason, founding mathematical models；Method for normalizing is：
Ag=A/max (A) (8)
In formula (8), AgFor normalization absorbance, max (A) is the absorbance maximum on different wave length, and A is extinction
Degree.With the Comparative result of existing chemical analysis, utilize principal component analysis (PCA, principal component analysis)
Or artificial neural network (ANN, artificial neural network) or PLS (PLSR, particle
Least squares calibration analysis) or SVMs (SVM, support vector machines)
The method such as signal analysis or statistics can founding mathematical models.
The step of embodiment of the present invention is to specific founding mathematical models are not repeated, known to those skilled in the art.
The transmitted spectrum and fluorescence spectrum of double light paths under the multiple positions of unknown complex solution are gathered, under at each position
Transmitted spectrum ratio under two light paths collected seeks the absorption spectrum that logarithm is complicated solution under the position, by multiple positions
Double light path fluorescence spectrums under the absorption spectrum at the place of putting and multiple positions, which are normalized, to be brought mathematical modeling into and is calculated, and is obtained
Complicated solution surveys the content of target component.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 2
The embodiment of the present invention is differed only in embodiment 1, and the move mode of light source 3 and spectrum acquisition device 7 is not
Together, it is described below：
Referring to Fig. 3, it is ensured that the light extraction optical port of light source 3 is close to packaging bag 5, light source 3 with the entrance slit of spectrum acquisition device 7
Complicated solution in packaging bag 5 is transmitted and excited, is in the case where position a gathers double light paths by spectrum acquisition device 7：Position
Put a and position a ' transmitted spectrum and fluorescence spectrum.Control spectrum acquisition device 7 to be moved to position b by displacement platform 6, adopt
Collect at the b of position and be under double light paths：Position b and position b ' transmitted spectrum and fluorescence spectrum；Spectrum is controlled to connect by displacement platform 6
Receiving apparatus 7 is moved at position n, collection position n under double light paths i.e. always：Position n and position n ' transmitted spectrum and fluorescence light
Spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 3
When implementing, due to the limitation of space structure, it is possible that light source 3 can not be close to spectrum acquisition device 7
The situation of packaging bag 5, at this moment can be used as incident optical by setting an optical fiber respectively at light source 3 and spectrum acquisition device 7
4 with the output optical fiber 8.
Referring to Fig. 4, light source 3 is transmitted and excited to the complicated solution in packaging bag 5 by incident optical 4, by spectrum
Reception device 7 passes through the acquisition of transmission spectrum of the output optical fiber 8 and fluorescence spectrum, and incident optical 4 is close to packaging respectively with the output optical fiber 8
Bag 5, incident optical 4 is at a of position, and light source 3 is under double light paths at the position by incident optical 4：Position a and position a ' are right
Complicated solution is transmitted and excited, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum；Then pass through displacement platform
6 control incident opticals 4 are moved at the b of position, and light source 3 is under double light paths at the position by incident optical 4：Position b and position
Put b ' complicated solution is transmitted and excited, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum；It is flat by displacement
The control incident optical 4 of platform 6 is moved at the n of position always, and light source 3 is under double light paths at the position by incident optical 4：Position
N and position n ' are transmitted and excited to complicated solution, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 4
The embodiment of the present invention is different only in that with embodiment 3, the output optical fiber 8, with position a, position b ... positions n；Position
A ', position b ' ... positions n ' setting difference, it is described below：
Referring to Fig. 5, light source 3 is transmitted and excited to the complicated solution in packaging bag 5 by incident optical 4, by spectrum
Reception device 7 passes through the acquisition of transmission spectrum of the output optical fiber 8 and fluorescence spectrum, and incident optical 4 is close to packaging respectively with the output optical fiber 8
Bag 5, the output optical fiber 8 is gathered under the double light paths in the position i.e. at a of position by spectrum acquisition device 7：Position a's and position a '
Transmitted spectrum and fluorescence spectrum；Then the output optical fiber 8 is controlled to be moved at the b of position by displacement platform 6, by spectrum acquisition device
At 7 collection positions under double light paths i.e.：Position b and position b ' transmitted spectrum and fluorescence spectrum；Controlled out by displacement platform 6
Penetrate optical fiber 8 to be moved to always at the n of position, gathered by spectrum acquisition device 7 under the double light paths in the position i.e.：Position n and position n '
Transmitted spectrum and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 5
As different from Example 3, the embodiment only includes incident optical 4 to the embodiment of the present invention, described below：
Referring to Fig. 6, light source 3 is transmitted and excited to the complicated solution in packaging bag 5 by incident optical 4, by spectrum
The acquisition of transmission spectrum of reception device 7 and fluorescence spectrum, incident optical 4 are close to bag respectively with the entrance slit of spectrum acquisition device 7
Pack 5, incident optical 4 is at a of position, and light source 3 by being under double light paths at 4 pairs of positions of incident optical：Position a and position a '
Complicated solution is transmitted and excited, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum；Then pass through displacement platform 6
Control incident optical 4 is moved at the b of position, and light source 3 by being under double light paths at 4 pairs of positions of incident optical：Position b and position
B ' is transmitted and excited to complicated solution, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum；Controlled by displacement platform 6
Incident optical 4 processed is moved at the n of position always, and light source 3 by being under double light paths at 4 pairs of positions of incident optical：Position n and position
Put n ' complicated solution is transmitted and excited, by the acquisition of transmission spectrum of spectrum acquisition device 7 and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 6
As different from Example 3, the embodiment only includes the output optical fiber 8 to the embodiment of the present invention, described below：
Referring to Fig. 7, light source 3 is transmitted and excited to the complicated solution in packaging bag 5, is passed through by spectrum acquisition device 7
The acquisition of transmission spectrum of the output optical fiber 8 and fluorescence spectrum, the light extraction optical port of light source 3 are close to packaging bag 5 respectively with the output optical fiber 8, go out
Optical fiber 8 is penetrated at a of position, is gathered by spectrum acquisition device 7 under the double light paths in the position i.e.：Position a and position a ' transmitted light
Spectrum and fluorescence spectrum；Then control the output optical fiber 8 to be moved at the b of position by displacement platform 6, gathered by spectrum acquisition device 7
At the position under double light paths i.e.：Position b and position b ' transmitted spectrum and fluorescence spectrum；Emergent light is controlled by displacement platform 6
Fibre 8 is moved at the n of position always, is gathered by spectrum acquisition device 7 under the double light paths in the position i.e.：Position n's and position n ' is saturating
Penetrate spectrum and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 7
Select, the scheme in above-described embodiment 1-6 is further introduced, light source 3 with reference to specific device
Including transmitted light source and fluorescence excitation light source, transmitted light source can be super continuous wide range laser, the super continuous wide range laser covering
The combination of visible light wave range or near infrared light wave band or both, excitation source is ultraviolet lamp, above-mentioned light source can directly light or
Conducted through incident optical 4.Displacement platform 6 is stepper motor, and spectrum acquisition device 7 is spectrometer, described below：
As shown in Figure 3, it is ensured that the super continuous light extraction optical port of wide range laser and ultraviolet lamp 3 is close to the entrance slit of spectrometer 7
Packaging bag 5, super continuous wide range laser and ultraviolet lamp 3 by incident optical 4 in packaging bag 5 complicated solution carry out transmission and
Excite, the acquisition of transmission spectrum of the output optical fiber 8 and fluorescence spectrum are passed through by spectrometer 7, incident optical 4 is tight respectively with the output optical fiber 8
Packaging bag 5 is pasted, incident optical 4 is at a of position, and super continuous wide range laser and ultraviolet lamp 3 are by incident optical 4 at the position
Under double light paths i.e.：Position a and position a ' are transmitted and excited to complicated solution, by the acquisition of transmission spectrum of spectrometer 7 and fluorescence
Spectrum；Then incident optical 4 is controlled to be moved at the b of position by stepper motor 6, super continuous wide range laser and ultraviolet lamp 3 lead to
Cross incident optical 4 at the position under double light paths i.e.：Position b and position b ' are transmitted and excited to complicated solution, by spectrum
The acquisition of transmission spectrum of instrument 7 and fluorescence spectrum；The control incident optical 4 of stepper motor 6 is moved at the n of position always, super continuous wide range
Laser and ultraviolet lamp 3 are under double light paths at the position by incident optical 4：Position n and position n ' is carried out to complicated solution
Transmit and excite, by the acquisition of transmission spectrum of spectrometer 7 and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 8
As different from Example 7, transmitted light source is bromine tungsten filament lamp wide spectrum light source, the bromine tungsten filament lamp wide spectrum optical to the embodiment of the present invention
Source covering visible light wave band or near infrared light wave band, or both combination, fluorescence excitation light source is ultraviolet laser tube, above-mentioned light
Source 3 can directly light or be conducted through incident optical 4.
As shown in Figure 3, it is ensured that bromine tungsten filament lamp wide spectrum light source and the light extraction optical port of ultraviolet laser tube 3 and the entrance slit of spectrometer 7 are tight
Packaging bag 5 is pasted, bromine tungsten filament lamp wide spectrum light source and ultraviolet laser tube 3 carry out saturating by incident optical 4 to the complicated solution in packaging bag 5
Penetrate and excite, 8 points of the acquisition of transmission spectrum of the output optical fiber 8 and fluorescence spectrum, incident optical 4 and the output optical fiber are passed through by spectrometer 7
It is not close to packaging bag 5, incident optical 4 is at a of position, and bromine tungsten filament lamp wide spectrum light source and ultraviolet laser tube 3 are by incident optical 4 at this
At position under double light paths i.e.：Position a and position a ' are transmitted and excited to complicated solution, by the acquisition of transmission spectrum of spectrometer 7
And fluorescence spectrum；Then incident optical 4 is controlled to be moved to the b of position at by stepper motor 6, bromine tungsten filament lamp wide spectrum light source and ultraviolet sharp
Light pipe 3 by incident optical 4 at the position under double light paths i.e.：Position b and position b ' are transmitted and excited to complicated solution,
By the acquisition of transmission spectrum of spectrometer 7 and fluorescence spectrum；The control incident optical 4 of stepper motor 6 is moved at the n of position always, bromine tungsten
Lamp wide spectrum light source and ultraviolet laser tube 3 are under double light paths at the position by incident optical 4：Position n and position n ' are to complexity
Solution is transmitted and excited, by the acquisition of transmission spectrum of spectrometer 7 and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 9
The embodiment of the present invention from unlike embodiment 7,8, transmitted light source be xenon lamp wide spectrum light source, the xenon lamp wide spectrum light source
Covering visible light wave band or near infrared light wave band, or both combination, fluorescence excitation light source is ultra-violet light-emitting pipe, above-mentioned light source 3
It can directly light or be conducted through incident optical 4, it is described below：
As shown in Figure 3, it is ensured that xenon lamp wide spectrum light source and the light extraction optical port of ultra-violet light-emitting pipe 3 are close to the entrance slit of spectrometer 7
Packaging bag 5, xenon lamp wide spectrum light source and ultra-violet light-emitting pipe 3 by incident optical 4 in packaging bag 5 complicated solution carry out transmission and
Excite, the acquisition of transmission spectrum of the output optical fiber 8 and fluorescence spectrum are passed through by spectrometer 7, incident optical 4 is tight respectively with the output optical fiber 8
Packaging bag 5 is pasted, incident optical 4 is at a of position, and xenon lamp wide spectrum light source and ultra-violet light-emitting pipe 3 are by incident optical 4 at the position
Under double light paths i.e.：Position a and position a ' are transmitted and excited to complicated solution, by the acquisition of transmission spectrum of spectrometer 7 and fluorescence
Spectrum；Then incident optical 4 is controlled to be moved at the b of position by stepper motor 6, xenon lamp wide spectrum light source and ultra-violet light-emitting pipe 3 are logical
Cross incident optical 4 at the position under double light paths i.e.：Position b and position b ' are transmitted and excited to complicated solution, by spectrum
The acquisition of transmission spectrum of instrument 7 and fluorescence spectrum；The control incident optical 4 of stepper motor 6 is moved at the n of position always, xenon lamp wide spectrum optical
Source and ultra-violet light-emitting pipe 3 are under double light paths at the position by incident optical 4：Position n and position n ' is carried out to complicated solution
Transmit and excite, by the acquisition of transmission spectrum of spectrometer 7 and fluorescence spectrum.
Wherein, follow-up normalization, founding mathematical models and calculating complicated solution survey the step of the content of target component
Rapid same as Example 1, the embodiment of the present invention is not repeated this.
The embodiment of the present invention is to the model of each device in addition to specified otherwise is done, and the model of other devices is not limited,
As long as the device of above-mentioned functions can be completed.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Embodiment 10
The embodiment of the present invention from unlike above-described embodiment 7,8,9, light source 3 is according to can be with the need in practical application
It can also can also be used using other mobile devices, spectrum acquisition device 7 using the light source of other models, displacement platform 6
Other reception devices.When implementing, the embodiment of the present invention is not limited to the model of above-mentioned device.
The embodiment of the present invention is to position a, position b ... positions n；Position a ', position b ' ... positions n ' and move mode etc. are
It is not restricted, as long as the function of the embodiment of the present invention can be realized, within the protection domain of the application.
In summary, the embodiments of the invention provide a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring complexity are molten
What measurement obtained under double light paths at the method for liquid composition, multiposition is the comprehensive various spectrum for causing spectrum non-linear factor, is increased
Add the information content for the material that is stimulated, greatly inhibited the non-linear of spectrum, and measured with strong points, eliminate transmitted light source change
Change the influence with packaging bag, greatly improve the precision of complicated solution component content analysis.Solve the nothing of packed complicated solution
Test problems are damaged, it is efficient, pollution-free.
Claims (9)
1. a kind of lower pair of light path transmission of multiposition and the method for fluorescence spectral measuring complicated solution composition, it is characterised in that described
Method is used for the component content for measuring complicated solution in packaging bag, the described method comprises the following steps：
The light extraction optical port of light source is close to packaging bag with the entrance slit of spectrum acquisition device, and light source includes transmitted light source and fluorescence swashs
Light emitting source, transmitted light source is transmitted to complicated solution, and fluorescent exciting source excitation complicated solution produces fluorescence, spectrum acquisition dress
Put acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control transmitted light source is moved at two under multiple positions different light paths with fluorescence excitation light source, by spectrum
Reception device gathers double light path transmitted spectrums and double light path fluorescence spectrums under each position；
Logarithm is asked to be complicated solution under the position transmitted spectrum ratio under collected under each position two light paths
Place is normalized in double light path fluorescence spectrums under absorption spectrum at multiple positions and multiple positions by absorption spectrum together
Reason, the Comparative result with existing chemical analysis, founding mathematical models；
The transmitted spectrum and fluorescence spectrum of double light paths of the unknown complex solution under multiple positions are gathered, will be gathered under each position
To two light paths under transmitted spectrum ratio seek the absorption spectrum that logarithm is complicated solution under the position；
Double light path fluorescence spectrums under absorption spectrum at multiple positions and multiple positions are normalized, and bring mathematical modulo into
Type is calculated, and obtains the content that complicated solution surveys target component；
Methods described increases the letter for the material that is stimulated by gathering the transmission of double light paths and fluorescence spectrum at packaging bag diverse location
Breath amount；Suppress the non-linear of spectrum；Eliminate the influence of transmitted light source change and packaging bag；Improve the analysis of complicated solution component content
Precision；Solve the problems, such as the Non-Destructive Testing of packed complicated solution.
2. lower pair of light path transmission of a kind of multiposition according to claim 1 and the side of fluorescence spectral measuring complicated solution composition
Method, it is characterised in that displacement platform control transmitted light source and fluorescence excitation light source to be moved under multiple positions two do not share the same light
At journey, the step of double light path transmitted spectrums and double light path fluorescence spectrums under each position are gathered by spectrum acquisition device is specific
For：
At a of position, displacement platform control transmitted light source and fluorescence excitation light source are respectively under two light paths：Position a and position
Put a ' complicated solution is transmitted and excited, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform controls transmitted light source and fluorescence excitation light source to be moved to position b, respectively under two light paths i.e.：Position b and
Position b ' is transmitted and excited to complicated solution, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform controls transmitted light source and fluorescence excitation light source to be moved to position n always, respectively under two light paths i.e.：Position
N and position n ' are transmitted and excited to complicated solution, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Or,
Transmitted light source and fluorescence excitation light source are transmitted and excited to the complicated solution in packaging bag, and spectrum acquisition device is in place
Put at a, displacement platform control spectrum acquisition device is respectively under two light paths：Position a and position a ' places acquisition of transmission spectrum
And fluorescence spectrum；
Displacement platform control spectrum acquisition device is moved to position b, respectively under two light paths i.e.：Position b and position b ' places are adopted
Collect transmitted spectrum and fluorescence spectrum；
Displacement platform control spectrum acquisition device is moved to position n always, respectively under two light paths i.e.：Position n and position n '
Locate acquisition of transmission spectrum and fluorescence spectrum.
3. lower pair of light path transmission of a kind of multiposition according to claim 1 or 2 and fluorescence spectral measuring complicated solution composition
Method, it is characterised in that methods described also includes：
One optical fiber is set at light source, as incident optical, and ensures that the entrance slit of incident optical and spectrum acquisition device is tight
Paste packaging bag；
Or,
One optical fiber is set at spectrum acquisition device, as the output optical fiber, and ensures that the output optical fiber is close to light source light extraction optical port
Packaging bag；
Or,
Incident optical and the output optical fiber are set respectively at light source and spectrum acquisition device, and ensure incident optical and the output optical fiber
It is close to packaging bag.
4. lower pair of light path transmission of a kind of multiposition according to claim 3 and the side of fluorescence spectral measuring complicated solution composition
Method, it is characterised in that
Incident optical is at a of position, and transmitted light source and fluorescence excitation light source are distinguished under two light paths i.e. by incident optical：Position
A and position a ' places are transmitted and excited to complicated solution, by spectrum acquisition device acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control incident optical is moved at the b of position, and transmitted light source and fluorescence excitation light source are distinguished by incident optical
Under two light paths at the position i.e.：Complicated solution is transmitted and excited at position b and position b, by spectrum acquisition device
Acquisition of transmission spectrum and fluorescence spectrum；
Control incident optical is moved at the n of position always, and transmitted light source and fluorescence excitation light source are by incident optical respectively at this
At position under two light paths i.e.：Position n and position n ' places are transmitted and excited to complicated solution, are gathered by spectrum acquisition device
Transmitted spectrum and fluorescence spectrum.
5. lower pair of light path transmission of a kind of multiposition according to claim 3 and the side of fluorescence spectral measuring complicated solution composition
Method, it is characterised in that
The output optical fiber at a of position, by spectrum acquisition device by the output optical fiber under the light path of the position two i.e.：Position a
With position a ' places acquisition of transmission spectrum and fluorescence spectrum；
Displacement platform control the output optical fiber is moved at the b of position, and spectrum acquisition device is by the output optical fiber two at the position
Under light path i.e.：Position b and position b ' places acquisition of transmission spectrum and fluorescence spectrum；
Control the output optical fiber is moved at the n of position always, spectrum acquisition device two light paths at the position by the output optical fiber
It is lower to be：Position n and position n ' places acquisition of transmission spectrum and fluorescence spectrum.
6. lower pair of light path transmission of a kind of multiposition according to claim 3 and the side of fluorescence spectral measuring complicated solution composition
Method, it is characterised in that the transmitted light source be super continuous wide range laser, the super continuous wide range laser covering visible light wave band or
Near infrared light wave band, or both combination；Fluorescence excitation light source is ultraviolet lamp, and transmitted light source and fluorescence excitation light source can be direct
Light or conducted through incident optical.
7. lower pair of light path transmission of a kind of multiposition according to claim 3 and the side of fluorescence spectral measuring complicated solution composition
Method, it is characterised in that institute's translation stage is stepper motor；The spectrum acquisition device is spectrometer.
8. lower pair of light path transmission of a kind of multiposition according to claim 3 and the side of fluorescence spectral measuring complicated solution composition
Method, it is characterised in that the transmitted light source is xenon lamp wide spectrum light source or bromine tungsten filament lamp wide spectrum light source, covering visible light wave band or near
Infrared band, or both combination；The fluorescence excitation light source is ultraviolet laser tube or ultra-violet light-emitting pipe, transmitted light source and glimmering
Phot-luminescence source can directly light or be conducted through incident optical.
9. a kind of lower pair of light path transmission of multiposition and fluorescence spectral measuring according to any claim in claim 1-3
The method of complicated solution composition, it is characterised in that
The mathematical modeling utilizes principal component analysis, artificial neural network, PLS, SVMs, signal point
Analysis or statistical method are set up.
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