CN107192682A - The method that double light path and multiposition transmitted spectrums measure complicated solution component content - Google Patents
The method that double light path and multiposition transmitted spectrums measure complicated solution component content Download PDFInfo
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- CN107192682A CN107192682A CN201710529537.0A CN201710529537A CN107192682A CN 107192682 A CN107192682 A CN 107192682A CN 201710529537 A CN201710529537 A CN 201710529537A CN 107192682 A CN107192682 A CN 107192682A
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Abstract
The invention discloses the method that a kind of pair of light path and multiposition transmitted spectrum measure complicated solution component content, including：The light extraction optical port of light source is close to packaging bag with the entrance slit of spectrum acquisition device, and light source is transmitted to complicated solution sample, spectrum acquisition device acquisition of transmission spectrum；Displacement platform control light source is moved to different positions and changes light path measurement, logarithm is asked to obtain the absorption spectrum under the position ratio of the transmitted spectrum gathered under two light paths at each position, by the absorption spectrum normalized at multiple positions, with the Comparative result of existing chemical analysis, founding mathematical models；Absorption spectrum at double light path transmitted spectrums at the multiple positions of collection unknown complex solution, calculating multiposition is brought its normalized into mathematical modeling and calculated, and obtains the content of surveyed target component.This invention removes the influence that light source change and packaging bag are brought, the scattering of complicated solution is greatly inhibited, the precision of complicated solution component content analysis is improved.
Description
Technical field
The present invention relates to spectrum complicated solution concentration analysis stoichiometry field, more particularly to a kind of pair of light path and multiposition
The method that transmitted spectrum measures complicated solution component content.
Background technology
In the prior art, more ripe technology is that containing for complicated solution composition in packaging bag is detected by chemical analysis
Amount, the mode with the high outstanding advantages of accuracy, but chemical analysis can not meet quickly, noncontact and free of contamination need
Ask, spectral measurement is also possible to realize the content detection of packed complicated solution composition due to its noncontact, free of contamination characteristic.
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.And due to the complexity of complicated solution composition, therefore with certain scattering, cause obtained spectrum to have non-
Linearly, for this problem, this patent proposes a kind of pair of light path and multiposition transmitted spectrum measurement complicated solution component content
Method.
The content of the invention
The invention provides the method that a kind of pair of light path and multiposition transmitted spectrum measure complicated solution component content, this hair
Bright to eliminate the influence that light source change and packaging bag are brought, the influence for greatly inhibiting complicated solution scattered band is improved multiple
The precision of mixture solution component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, efficient, easy,
It is pollution-free, it is described below：
The method that a kind of pair of light path and multiposition transmitted spectrum measure complicated solution component content, methods described is used to measure
Complicated solution component content in packaging bag, the described method comprises the following steps：
The light extraction optical port of light source, with the entrance slit of spectrum acquisition device it is close to packaging bag, light source is to complicated solution sample
Transmitted, spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control light source is moved to diverse location, changes light path transmission complicated solution at each position, by
Two transmitted spectrum ratios on each position are asked logarithm to be at the position by spectrum acquisition device acquisition of transmission spectrum
Complicated solution absorption spectrum, by the absorption spectrum normalized at multiple positions, the Comparative result with existing chemical analysis is built
Vertical mathematical modeling；
Transmitted spectrum of the complicated solution under two light paths at multiple positions in unknown packaging bag is gathered, calculates and absorbs light
The absorption spectrum normalization of multiple positions is brought into mathematical modeling after spectrum to be calculated, and is obtained complicated solution and is surveyed target component
Content；
Methods described eliminates the influence that light source change and packaging bag are brought using double light path measurements, is increased using multiposition measuring
Plus the information content of complicated solution all the components, suppress the influence that complicated solution scattered band comes, improve complicated solution component content point
The precision of analysis；Solve the problems, such as the Non-Destructive Testing of complicated solution composition in packaging bag.
Wherein, displacement platform control light source is moved to diverse location, changes light path transmission at each position complicated molten
Liquid, by spectrum acquisition device acquisition of transmission spectrum the step of be specially：
At a of position, displacement platform control light source is respectively under two light paths：Position a and position a ' are to complicated solution
Sample is transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control light source is moved to position b, respectively under two light paths i.e.：Position b and position b ' is molten to complexity
Liquid sample is transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control light source is moved to position n always, respectively under two light paths i.e.：Position n and position n ' is to multiple
Mixture solution sample is transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Or,
Light source is transmitted to the complicated solution in packaging bag, and spectrum acquisition device is at a of position, displacement platform control light
Compose reception device is respectively under two light paths：Position a and position a ' places acquisition of transmission 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；
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.
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.
Wherein, incident optical is at a of position, and light source is distinguished under two light paths i.e. by incident optical：Position a and position a '
Place is transmitted to complicated solution sample, by spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control incident optical is moved at the b of position, and light source is by incident optical respectively two at the position
Under light path i.e.：Position b and position b ' places are transmitted to complicated solution sample, by spectrum acquisition device acquisition of transmission spectrum；
Control incident optical is moved at the n of position always, and light source passes through incident optical two light paths at the position respectively
It is lower to be：Position n and position n ' places are transmitted to complicated solution sample, by spectrum acquisition device acquisition of transmission spectrum.
Wherein, the output optical fiber is 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 and position a ' places acquisition of transmission 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；
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.
Further, the light source is super continuous wide range laser, the super continuous wide range laser covering visible light wave band or near
Infrared band, or both combination, can directly light or be conducted through incident optical.
Further, institute's translation stage is stepper motor；The spectrum acquisition device is spectrometer.
Further, the light source is xenon lamp wide spectrum light source or bromine tungsten filament lamp wide spectrum light source, the xenon lamp wide spectrum light source or bromine tungsten
Lamp wide spectrum light source covering visible light wave band or near infrared light wave band, or both combination, can directly light or be passed through incident optical
Lead.
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, gathers same under double light paths at diverse location
Packed complicated solution transmitted spectrum under light source；
2nd, the present invention eliminates the influence that light source change and packaging bag are brought using double light path measurements, while molten according to complexity
The scattering of liquid, causes transmitted spectrum to be scattered to multiple directions, and obtained transmitted spectrum is measured at multiple positions and is added again
The information content of mixture solution all the components, so as to greatly inhibit the influence that complicated solution scattered band comes；
3rd, the present invention improves the precision of complicated solution component content analysis；Solve complicated solution composition in packaging bag
Non-Destructive Testing problem, it is efficient, easy, pollution-free.
Brief description of the drawings
Fig. 1 is double light path transmitted spectrum schematic diagrams；
Fig. 2 is the method schematic diagram of double light paths and multiposition transmitted spectrum measurement complicated solution component contents in embodiment 1；
Fig. 3 is that the method for double light paths and multiposition transmitted spectrum measurement complicated solution component contents in embodiment 2 another is shown
It is intended to；
Fig. 4 is that the method for double light paths and multiposition transmitted spectrum measurement complicated solution component contents in embodiment 3 another is shown
It is intended to；
Fig. 5 is that the method for double light paths and multiposition transmitted spectrum measurement complicated solution component contents in embodiment 4 another is shown
It is intended to；
Fig. 6 is that the method for double light paths and multiposition transmitted spectrum measurement complicated solution component contents in embodiment 5 another is shown
It is intended to；
Fig. 7 is that the method for double light paths and multiposition transmitted spectrum measurement complicated solution component contents in embodiment 6 another is shown
It is intended to.
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； 4：Incident optical；
5：Packaging bag； 6：Displacement platform；
7：Spectrum acquisition device； 8：The output optical fiber；
a、b…n；a’、b’…n’：It is the position for being close to 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.
It is to eliminate light source change and packaging bag band using double light path measurements with reference to double light paths and multiposition transmission spectrum method
The influence come, while the scattering according to complicated solution, causes transmitted spectrum to be scattered to multiple directions, and is measured at multiple positions
Obtained transmitted spectrum adds the information content of complicated solution all the components, so as to greatly inhibit what complicated solution scattered band came
Influence, improves the precision of complicated solution component content analysis.The Non-Destructive Testing for solving complicated solution composition in packaging bag is asked
Topic, it is efficient, easy, pollution-free.
Embodiment 1
The method that provided in an embodiment of the present invention pair of light path and multiposition transmitted spectrum measure complicated solution component content, institute
Using to device 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 sample transmitted, by the acquisition of transmission spectrum of spectrum acquisition device 7；Light source 3 is then controlled by displacement platform 6
Position b is moved to, 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 paths of correspondence
2) the complicated solution sample in packaging bag 5 is transmitted, by the acquisition of transmission spectrum of spectrum acquisition device 7；Pass through displacement platform 6
Control light source 3 is moved to position n always, under two light paths at the n of position i.e.：Position n (the first light path 1 of correspondence) and position n '
(the second light path 2 of correspondence) is transmitted to the complicated solution sample in packaging bag 5, by the acquisition of transmission spectrum of spectrum acquisition device 7.
Transmitted spectrum ratio under two light paths that will be gathered at each position asks logarithm to be complicated solution at the position
Absorption spectrum, the absorption spectrum of many positions of a, b ... n is normalized, and 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.
Double light path transmitted spectrums under many positions of complicated solution a, b...n in unknown packaging bag are gathered, by each position
Absorption spectrum obtained by double light path transmitted spectrums calculating at place, which is normalized, to be brought the above-mentioned mathematical modeling established into and is counted
Calculate, obtain the content that complicated solution surveys 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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, 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 sample in packaging bag 5 is transmitted, is in the case where position a gathers double light paths by spectrum acquisition device 7：Position
A and position a ' transmitted spectrum.Spectrum acquisition device 7 is controlled to be moved to double light at position b, collection position b by displacement platform 6
Under journey i.e.：Position b and position b ' transmitted spectrum；Spectrum acquisition device 7 is controlled to be moved to position n always by displacement platform 6,
Gather at the n of position and be under double light paths：Position n and position n ' transmitted 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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, 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 by incident optical 4 to the complicated solution sample in packaging bag 5, is connect by spectrum
Receiving apparatus 7 passes through the acquisition of transmission spectrum of the output optical fiber 8, and incident optical 4 is close to packaging bag 5, incident optical respectively with the output optical fiber 8
4 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 to complicated solution sample
Transmitted, by the acquisition of transmission spectrum of spectrum acquisition device 7；Then incident optical 4 is controlled to be moved to position by displacement platform 6
At b, light source 3 is under double light paths at the position by incident optical 4：Position b and position b ' carries out saturating to complicated solution sample
Penetrate, by the acquisition of transmission spectrum of spectrum acquisition device 7；Incident optical 4 is controlled to be moved to always at the n of position by displacement platform 6, light
Source 3 is under double light paths at the position by incident optical 4：Position n and position n ' are transmitted to complicated solution sample, by light
Compose the acquisition of transmission spectrum of reception device 7.
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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, 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 by incident optical 4 to the complicated solution sample in packaging bag 5, is connect by spectrum
Receiving apparatus 7 passes through the acquisition of transmission spectrum of the output optical fiber 8, and incident optical 4 is close to packaging bag 5, the output optical fiber respectively with the output optical fiber 8
8 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 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 under the double light paths in the position
I.e.：Position b and position b ' transmitted spectrum；The output optical fiber 8 is controlled to be moved to always at the n of position by displacement platform 6, by spectrum
Reception device 7 is gathered at the position：Position n and position n ' transmitted 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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, 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 by incident optical 4 to the complicated solution sample in packaging bag 5, is connect by spectrum
The acquisition of transmission spectrum of receiving apparatus 7, incident optical 4 is close to packaging bag 5, incident light respectively with the entrance slit of spectrum acquisition device 7
Fibre 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 ' are to complicated solution sample
Product are transmitted, by the acquisition of transmission spectrum of spectrum acquisition device 7；Then incident optical 4 is controlled to be moved to position b by displacement platform 6
Place, light source 3 by being under double light paths at 4 pairs of positions of incident optical：Position b and position b ' to complicated solution sample transmission, by
The acquisition of transmission spectrum of spectrum acquisition device 7；Incident optical 4 is controlled to be moved to always at the n of position by displacement platform 6, light source 3 leads to
Cross at 4 pairs of positions of incident optical under double light paths i.e.：Position n and position n ' are filled to complicated solution sample transmission by spectrum acquisition
Put 7 acquisition of transmission 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.
, can also be according to the need in practical application, to position a, position b ... positions n when implementing；Position a ', position
The position n ' that puts b ' ... and mobile mode are set, i.e., can also be including a variety of embodiments, the embodiment of the present invention pair
This is not limited.
In summary, the embodiments of the invention provide a kind of pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, 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 to the complicated solution sample in packaging bag 5, by spectrum acquisition device 7 by going out
The acquisition of transmission spectrum of optical fiber 8 is penetrated, light extraction optical port and the output optical fiber 8 of light source 3 are close to packaging bag 5 respectively, and the output optical fiber 8 is in position
At a, gathered by spectrum acquisition device 7 under the double light paths in the position i.e.：Position a and position a ' transmitted spectrum；Then pass through position
Move the control of platform 6 the output optical fiber 8 to be moved at the b of position, gathered by spectrum acquisition device 7 under the double light paths in the position i.e.：Position b
With position b ' transmitted spectrum；The output optical fiber 8 is controlled to be moved to always at the n of position by displacement platform 6, by spectrum acquisition device
At 7 collection positions under double light paths i.e.：Position n and position n ' transmitted 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.
, can also be according to the need in practical application, to position a, position b ... positions n when implementing；Position a ', position
The position n ' that puts b ' ... and mobile mode are set, i.e., can also include a variety of embodiments.
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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, pollution-free.
Embodiment 7
Select, the scheme in above-described embodiment 1-6 is further introduced, light source can with reference to specific device
Think super continuous wide range laser, super continuous the wide range laser covering visible light wave band or near infrared light wave band, or both group
Close, can directly light or be conducted through incident optical 4.Displacement platform 6 is stepper motor, and spectrum acquisition device 7 is spectrometer, is referred to
It is described below：
Referring to Fig. 4, super continuous wide range laser 3 is carried out saturating by incident optical 4 to the complicated solution sample in packaging bag 5
Penetrate, the acquisition of transmission spectrum of the output optical fiber 8 is passed through by spectrometer 7, incident optical 4 is close to packaging bag 5 with the output optical fiber 8, entered respectively
Optical fiber 4 is penetrated at a of position, super continuous wide range laser 3 is under double light paths at the position by incident optical 4：Position a and position
A ' is transmitted to complicated solution sample, by the acquisition of transmission spectrum of spectrometer 7；Incident optical 4 is then controlled by stepper motor 6
It is moved at the b of position, super continuous wide range laser 3 is under double light paths at the position by incident optical 4：Position b and position b '
Complicated solution sample is transmitted, by the acquisition of transmission spectrum of spectrometer 7；The control incident optical 4 of stepper motor 6 is moved to always
At the n of position, super continuous wide range laser 3 is under double light paths at the position by incident optical 4：Position n and position n ' are to complexity
Solution example is transmitted, by the acquisition of transmission spectrum of spectrometer 7.
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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, pollution-free.
Embodiment 8
As different from Example 7, light source 3 is bromine tungsten filament lamp wideband light source, the bromine tungsten filament lamp wideband light source 3 to the embodiment of the present invention
Covering visible light wave band or near infrared light wave band, or both combination, can directly light or be conducted through incident optical 4.
Referring to Fig. 4, bromine tungsten filament lamp wideband light source 3 is carried out saturating by incident optical 4 to the complicated solution sample in packaging bag 5
Penetrate, the acquisition of transmission spectrum of the output optical fiber 8 is passed through by spectrometer 7, incident optical 4 is close to packaging bag 5 with the output optical fiber 8, entered respectively
Optical fiber 4 is penetrated at a of position, bromine tungsten filament lamp wideband light source 3 is under double light paths at the position by incident optical 4：Position a and position
A ' is transmitted to complicated solution sample, by the acquisition of transmission spectrum of spectrometer 7；Incident optical 4 is then controlled by stepper motor 6
It is moved at the b of position, bromine tungsten filament lamp wideband light source 3 is under double light paths at the position by incident optical 4：Position b and position b '
Complicated solution sample is transmitted, by the acquisition of transmission spectrum of spectrometer 7；The control incident optical 4 of stepper motor 6 is moved to always
At the n of position, bromine tungsten filament lamp wideband light source 3 is under double light paths at the position by incident optical 4：Position n and position n ' are to complexity
Solution example is transmitted, by the acquisition of transmission spectrum of spectrometer 7.
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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, pollution-free.
Embodiment 9
The embodiment of the present invention from unlike embodiment 7,8, light source 3 is xenon lamp wide spectrum light source, and the xenon lamp wide spectrum light source covers
Lid visible light wave range or near infrared light wave band, or both combination, can directly light or be conducted through incident optical；Displacement platform 6
It is described below for magnet attraction device：
Referring to Fig. 4, xenon lamp wide spectrum light source 3 is transmitted by incident optical 4 to the complicated solution sample in packaging bag 5,
The acquisition of transmission spectrum of the output optical fiber 8 is passed through by spectrometer 7, incident optical 4 is close to packaging bag 5, incident light respectively with the output optical fiber 8
Fibre 4 is at a of position, and xenon lamp wide spectrum light source 3 is under double light paths at the position by incident optical 4：Position a and position a ' is to multiple
Mixture solution sample is transmitted, by the acquisition of transmission spectrum of spectrometer 7；Then incident optical 4 is controlled to be moved to by stepper motor 6
At the b of position, xenon lamp wide spectrum light source 3 is under double light paths at the position by incident optical 4：Position b and position b ' is molten to complexity
Liquid sample is transmitted, by the acquisition of transmission spectrum of spectrometer 7；The control incident optical 4 of stepper motor 6 is moved at the n of position always,
Xenon lamp wide spectrum light source 3 by incident optical 4 at the position under double light paths i.e.：Position n and position n ' enter to complicated solution sample
Row transmission, by the acquisition of transmission spectrum of spectrometer 7.
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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, 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 pair of light path and multiposition transmitted spectrum measurement complicated solution composition
The method of content, not only eliminates the influence that light source change and packaging bag are brought, and multiposition measuring adds complicated solution institute
There is the information content of composition, so that the spectrum non-linear effects for greatly inhibiting complicated solution scattered band, improve complicated solution
The precision of component content analysis.The Non-Destructive Testing of complicated solution composition in packaging bag is solved the problems, such as, it is efficient, easy, pollution-free.
Claims (9)
1. the method that a kind of pair of light path and multiposition transmitted spectrum measure complicated solution component content, it is characterised in that the side
Method is used to measure the complicated solution component content in packaging bag, the described method comprises the following steps：
The light extraction optical port of light source, it is close to packaging bag with the entrance slit of spectrum acquisition device, light source is carried out to complicated solution sample
Transmission, spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control light source is moved to diverse location, changes light path transmission complicated solution at each position, by spectrum
Two transmitted spectrum ratios on each position are asked logarithm to be the complexity at the position by reception device acquisition of transmission spectrum
Solution absorption spectra, by the absorption spectrum normalized at multiple positions, the Comparative result with existing chemical analysis sets up number
Learn model；
Transmitted spectrum of the complicated solution under two light paths at multiple positions in unknown packaging bag is gathered, is calculated after absorption spectrum
Bring the absorption spectrum normalization of multiple positions into mathematical modeling to be calculated, obtain complicated solution and survey containing for target component
Amount；
Methods described eliminates the influence that light source change and packaging bag are brought using double light path measurements, increases multiple using multiposition measuring
The information content of mixture solution all the components, suppresses the influence that complicated solution scattered band comes, and improves the analysis of complicated solution component content
Precision；Solve the problems, such as the Non-Destructive Testing of complicated solution composition in packaging bag.
2. a kind of pair of light path according to claim 1 and multiposition transmitted spectrum measure the side of complicated solution component content
Method, it is characterised in that displacement platform control light source is moved to diverse location, changes light path transmission at each position complicated molten
Liquid, by spectrum acquisition device acquisition of transmission spectrum the step of be specially：
At a of position, displacement platform control light source is respectively under two light paths：Position a and position a ' are to complicated solution sample
Transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control light source is moved to position b, respectively under two light paths i.e.：Position b and position b ' are to complicated solution sample
Product are transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control light source is moved to position n always, respectively under two light paths i.e.：Position n and position n ' is molten to complexity
Liquid sample is transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Or,
Light source is transmitted to the complicated solution in packaging bag, and spectrum acquisition device is at a of position, and displacement platform control spectrum connects
Receiving apparatus respectively under two light paths i.e.：Position a and position a ' places acquisition of transmission 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；
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.
3. a kind of pair of light path according to claim 1 or 2 and multiposition transmitted spectrum measure complicated solution component content
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. a kind of pair of light path according to claim 3 and multiposition transmitted spectrum measure the side of complicated solution component content
Method, it is characterised in that
Incident optical is at a of position, and light source is distinguished under two light paths i.e. by incident optical：Position a and position a ' places are to complexity
Solution example is transmitted, by spectrum acquisition device acquisition of transmission spectrum；
Displacement platform control incident optical is moved at the b of position, and light source passes through incident optical two light paths at the position respectively
It is lower to be：Position b and position b ' places are transmitted to complicated solution sample, by spectrum acquisition device acquisition of transmission spectrum；
Control incident optical is moved at the n of position always, and light source is respectively under two light paths at the position by incident optical：
Position n and position n ' places are transmitted to complicated solution sample, by spectrum acquisition device acquisition of transmission spectrum.
5. a kind of pair of light path according to claim 3 and multiposition transmitted spectrum measure the side of complicated solution component content
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；
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；
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.
6. a kind of pair of light path according to claim 3 and multiposition transmitted spectrum measure the side of complicated solution component content
Method, it is characterised in that the light source is super continuous wide range laser, the super continuous wide range laser covering visible light wave band or near red
Outer optical band, or both combination, can directly light or be conducted through incident optical.
7. a kind of pair of light path according to claim 3 and multiposition transmitted spectrum measure the side of complicated solution component content
Method, it is characterised in that institute's translation stage is stepper motor；The spectrum acquisition device is spectrometer.
8. a kind of pair of light path according to claim 3 and multiposition transmitted spectrum measure the side of complicated solution component content
Method, it is characterised in that the light source is xenon lamp wide spectrum light source or bromine tungsten filament lamp wide spectrum light source, and the xenon lamp wide spectrum light source or bromine tungsten filament lamp are wide
Compose light source covering visible light wave band or near infrared light wave band, or both combination, can directly light or be conducted through incident optical.
9. a kind of pair of light path and the measurement of multiposition transmitted spectrum according to any claim in claim 1-3 are complicated molten
The method of liquid component content, 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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| Title |
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| 李刚 等: "利用多光程光谱法检测血液多咱成分含量的研究", 《光谱学与光谱分析》 * |
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Application publication date: 20170922 |