CN103760146B - A kind of noncontact composition detection system and method for powder - Google Patents
A kind of noncontact composition detection system and method for powder Download PDFInfo
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- CN103760146B CN103760146B CN201410003217.8A CN201410003217A CN103760146B CN 103760146 B CN103760146 B CN 103760146B CN 201410003217 A CN201410003217 A CN 201410003217A CN 103760146 B CN103760146 B CN 103760146B
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Abstract
The present invention provides the noncontact composition detection system and method for a kind of powder, including: light shield, to ensure detection dark situation；Laser line light source, is used for launching linear laser；Two-dimension translational platform, is used for placing sample and at moving in two dimensional directions sample, makes the whole surface of sample accept the dynamic line scanning of laser；Beam splitting filter, is used for reflecting linear laser to sample surfaces, and the flashlight obtained from sample surfaces is transferred to camera lens；Camera lens, for being collected from the flashlight scanned through dynamic line that described sample surfaces obtains；High-pass filter, for carrying out high pass optical filtering by described flashlight；Raman spectrometer, for receiving the flashlight after high pass filters, obtains optical signal；CCD, is connected with described Raman spectrometer, for described optical signal is converted to the signal of telecommunication, and is sent to processor；Processor, analyzes sample composition for the profile information according to described whole sample.The present invention is capable of the Fast nondestructive evaluation for powder.
Description
Technical field
The present invention relates to safety testing field, the noncontact particularly relating to a kind of powder becomes go-on-go
Examining system and method.
Background technology
Mash diets is one of requisite food species in China's resident living, especially exists
The northwestward mash diets such as flour of China, then be the main source of food.But it is as life
Improving constantly of level, the food source of town dweller focuses primarily upon to be bought in market.
And in recent years, in China market, substandard product and adulterated product grow with each passing day, these products are tight
Ghost image rings and has threatened that consumer's is healthy.Adulterated relative to flours, towards baby children
Youngster and the milk powder in the elderly market, the adulterated problem of the order of severity that China market occurs, this
The most adulterated harmful components are serious has threatened that infant and the elderly's is healthy.
Currently for this phenomenon on market, consumer can only be judged by some experiences,
Mainly first is to listen sound, and second is to see look, and the 3rd is to hear taste, and the 4th is to taste.Want accurately
Ground judges that good and bad milk powder also needs to the technical appraisement of professional institution, and consumer depends these ways alone
Carry out judging also have certain difficulty.But detection department of country, can only to the product on market
Spot-check, utilize special instrument technology to identify in the sample of selective examination, the most often exist
The situation that some disporduct is not detected at is there is during supervision.And consumer is in life
In want product composition is detected, need special testing agency to detect, and detect machine
The method of chemistry is mainly used to detect during structure detection, it is necessary first to according to be detected
Project, according to each specific process of detection project, does various extracting needs such as soda acid change etc.
Solution, then by solution specialty instrument be analyzed, draw last data.
And in the prior art, some sample to be detected generally requires and pre-processes, reach
That detects needs state.After such as solution is first made in milk powder dissolving by some project needs the most just
Can analyze, some then need overnight after again extract, after also some needs to heat certain time
Can analyze, the result detected then needed at least 2 weeks after out.So, the mistake of detection
Journey not only needs long time, and testing cost is the most somewhat expensive simultaneously.
Summary of the invention
(1) to solve the technical problem that
The present invention provides the noncontact composition detection system and method for a kind of powder, existing to solve
There is in technology the technical problem of the Non-Destructive Testing that cannot be carried out powder composition.
(2) technical scheme
For solving above-mentioned technical problem, the present invention provides the noncontact composition detection of a kind of powder
System, including:
Light shield, be used for placing laser line light source, two-dimension translational platform, sample, beam splitting filter,
Camera lens, Raman spectrometer and CCD, to ensure detection dark situation；
Laser line light source, is used for launching linear laser；
Two-dimension translational platform, is used for placing sample and at moving in two dimensional directions sample, makes the whole of sample
Individual surface accepts the dynamic line scanning of laser；
Beam splitting filter, is placed between described laser line light source, described sample and described camera lens,
For reflecting the linear laser extremely described sample surfaces that described laser line light source is launched, and will be from institute
The flashlight scanned through dynamic line stating that sample surfaces obtains is transferred to camera lens；
Camera lens, for being collected from the flashlight scanned through dynamic line that described sample surfaces obtains；
High-pass filter, between described camera lens and described Raman spectrometer, for by described
Flashlight carries out high pass optical filtering；
Raman spectrometer, for receiving the flashlight after high pass filters, obtains optical signal；
CCD, is connected with described Raman spectrometer, for described optical signal is converted to the signal of telecommunication,
Obtain the profile information of whole sample, and be sent to processor；
Processor, analyzes sample composition for the profile information according to described whole sample.
Further,
Described laser line light source includes Laser emission optical filter, is used for making described laser line light source send out
Penetrate Raman diffused light, get rid of Rayleigh scattering light.
Further,
The wavelength of described Laser emission optical filter is 785nm or 807nm.
Further,
The power of described laser line light source is 5W or 8W.
Further,
The wavelength of described beam splitting filter is 785nm, and a length of 801nm of edge wave, laser rays inclines
Rake angle is 45 degree；
Described high-pass filter wavelength is 785nm, a length of 805nm of edge wave；
Described light shield is inverted T shape, is used for preventing dust from entering system.
Further,
Described beam splitting filter is positioned in three-dimensional mobile platform and high-precision rotary mounting seat, is used for
Regulate the exact position of described beam splitting filter.
Further,
Described CCD is arranged on spherical axle base platform, is used for ensureing that described CCD is with described
Vertically connect between Raman spectrometer；
Described spherical axle base platform is: swing at the bottom of the spherical axle of 90 degree from level to vertical direction
Seat platform.
Further,
Described spherical axle base platform is fixed on enhancing rigidity bread board, for stably fixing institute
State CCD.
Further, described processor is additionally operable to:
The characteristic information of the profile information analysis reflection sample composition according to described whole sample, ginseng
According to the component list of known variety classes powder, analyze sample composition and build based on spectrum letter
Cease analyzes detection model in real time；
And/or, obtain the surface topography of described sample, set up the profile information of described whole sample
Corresponding relation with its surface topography.
On the other hand, the present invention also provides for the noncontact component detection method of a kind of powder, profit
Detect by the noncontact composition detection system of the powder as any one of claim 1-9,
Including:
Laser carries out two dimension dynamically line scanning after beam splitting filter to sample, and filters through beam splitting
Light is collected from the flashlight of the whole sample that sample surfaces obtains；
Receive the flashlight after high-pass filtering, obtain optical signal；
Described optical signal is converted to the signal of telecommunication, obtains the profile information of whole sample；
The profile information of described whole sample is analyzed, exports sample composition.
(3) beneficial effect
Visible, at the noncontact composition detection system and method for a kind of powder that the present invention proposes
In, it is possible to utilize spectrum detection technique that the whole surface of sample is carried out the dynamic line of two-dimensional laser and sweep
Retouch, and the flashlight transmitted through beam splitting filter optical signal after treatment be converted into the signal of telecommunication,
Thus obtain the profile information of whole sample, can analyze in judgement sample according to this profile information
The information of ingredient.The present invention is capable of the Fast nondestructive evaluation for powder, especially
It is the non-destructive quality monitoring in process of manufacture such as milk powder and flour, there is higher application
It is worth.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
By the accompanying drawing used required in embodiment or description of the prior art is briefly described, aobvious
And easy insight, the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to attached according to these
Figure obtains other accompanying drawing.
Fig. 1 is that the basic structure of the noncontact composition detection system of embodiment of the present invention powder is shown
It is intended to；
Fig. 2 is the knot of the noncontact composition detection system of a preferred embodiment of the invention powder
Structure schematic diagram；
Fig. 3 is that the basic procedure of the noncontact component detection method of embodiment of the present invention powder shows
It is intended to；
Fig. 4 is the light path schematic diagram of the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below will knot
Close the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear,
Be fully described by, it is clear that described embodiment be a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Make the every other embodiment obtained under creative work premise, broadly fall into present invention protection
Scope.
First the embodiment of the present invention proposes the noncontact composition detection system of a kind of powder, sees
Fig. 1, including:
Light shield 1, is used for placing laser line light source 2, two-dimension translational platform 3, sample 4, beam splitting
Optical filter 5, Raman spectrometer 8 and CCD9, to ensure detection dark situation；
Laser line light source 2, is used for launching linear laser；
Two-dimension translational platform 3, is used for placing sample 4 and at moving in two dimensional directions sample 4, makes sample
The whole surface of 3 accepts the dynamic line scanning of laser；
Beam splitting filter 5, is placed on described laser line light source 2, described sample 4 and described camera lens
Between 6, for reflecting linear laser extremely described sample 4 surface that described laser line light source 2 is launched,
And the flashlight that the warp obtained from described sample 4 surface scans is transferred to camera lens 6；
Camera lens 6, for being collected from the flashlight scanned through dynamic line that described sample surfaces obtains；
High-pass filter 7, between described camera lens 6 and described Raman spectrometer 8, being used for will
Described flashlight carries out high pass optical filtering；
Raman spectrometer 8, for receiving the flashlight after high pass filters, obtains optical signal；
CCD9, is connected with described Raman spectrometer 8, for described optical signal is converted to telecommunications
Number, obtain the profile information of whole sample, and be sent to processor 10；
Processor 10, analyzes sample composition for the profile information according to described whole sample.
Visible, in the noncontact composition detection system of a kind of powder that the embodiment of the present invention proposes
In, it is possible to utilize spectrum detection technique that the whole surface of sample is carried out two-dimensional laser line scanning,
And the flashlight transmitted through beam splitting filter optical signal after treatment is converted into the signal of telecommunication, from
And obtain the profile information of whole sample, institute in judgement sample can be analyzed according to this profile information
Information containing composition.The present invention is capable of the Fast nondestructive evaluation for powder, especially
The non-destructive quality monitoring in process of manufacture such as milk powder and flour, has higher application valency
Value.
The present invention realizes building Raman EO-1 hyperion detecting system by one light path of design.At this
In one embodiment of invention, it is preferable that laser line light source 2 can include that Laser emission filters
Sheet 11, such as Fig. 2, is used for making laser line light source 2 launch Raman diffused light, gets rid of Rayleigh scattering
Light.In another embodiment of the present invention, it is preferable that the wavelength of Laser emission optical filter 11
Can be 785nm or 807nm.In one embodiment of the invention, swashed by experiment test
The power of light line source 2, it is preferable that the power of laser line light source 2 can be 5W or 8W,
Effect is preferable.
In another embodiment of the present invention, it is preferable that the wavelength of beam splitting filter 5 is permissible
For 785nm, edge wavelength can be 801nm.In Laser Focusing and imaging process, in order to
The laser of incidence is made to share a common path with the flashlight of collection, it is preferable that beam splitting is filtered
The laser rays angle of inclination of mating plate 5 can be 45 degree.When laser is got on this beam splitting filter 5,
Beam splitting filter 5 can reflect laser to sample surfaces, and the light of sample surfaces is after reflection simultaneously
Again by this beam splitting filter 5, can simultaneously effective transmit the flashlight of return to camera lens 6.
In this process, for the fixing and accurate regulation height of beam splitting filter 5, angle and a left side
Right position, it is preferable that XYZ D translation platform 12 can be used to coordinate a high-precision rotary
Mounting seat 13 realizes the exact position regulation of beam splitting filter 5.
In one embodiment of the invention, it is preferable that the wavelength of high-pass filter 7 can be
785nm, edge wavelength can be 805nm.
In another embodiment of the present invention, it is preferable that light shield 1 can be inverted T shape,
During to ensure system work, the system of detection part is the most naked to be exposed on the outside, and prevents dust etc. from entering.
In one embodiment of the invention, in order to ensure between CCD9 and Raman spectrometer 8
Vertically connect location, it is ensured that light path is on the same line, it is preferable that can be pacified by CCD9
It is contained on spherical axle base platform 14.This spherical axle base platform 14 is to Vertical Square from level
To the spherical axle base platform of swing 90 degree, therefore can fix easily and rotate CCD9.
In another embodiment of the present invention, for stable fixing whole system, it is preferable that
Spherical axle base platform 14 can be fixed on enhancing rigidity bread board 15, for stably solid
Determine CCD9.
In one embodiment of the invention, it is preferable that can be by moving in real time sample 4
The scanning of state line obtains the image information of whole sample, can obtain the Raman collection of illustrative plates letter of sample simultaneously
Breath.Processor 10 can be believed according to ingredient in the profile information peak judgement sample of whole sample
Breath, according to the forecast model implanted, it can be determined that the content of main component.Detected by analysis
All image informations of gained, draw the characteristic information that can reflect sample composition；With reference in GB
The component list of the variety classes powder be given, as reference value, sets up reality based on spectral information
Time analyze detection model；And/or, obtain the surface topography of sample 4, and set up whole sample
Profile information and the corresponding relation of its surface topography.
The embodiment of the present invention also provides for the noncontact component detection method of a kind of powder, in utilization
State any one embodiment of the present invention to carry out the noncontact composition detection of powder, see Fig. 3,
Including:
Step 301: laser carries out two dimension dynamically line scanning after beam splitting filter to sample, and
Filter through beam splitting and be collected from the flashlight of the whole sample that sample surfaces obtains.
Step 302: receive the flashlight after high-pass filtering, obtain optical signal.
Step 303: described optical signal is converted to the signal of telecommunication, obtains the profile information of whole sample.
Step 304: be analyzed the profile information of described whole sample, exports sample composition.
The index path of the embodiment of the present invention is as shown in Figure 4.
Visible, the embodiment of the present invention has the advantages that
Noncontact composition detection system and method at a kind of powder that the embodiment of the present invention proposes
In, it is possible to utilize spectrum detection technique that the whole surface of sample is carried out the dynamic line of two-dimensional laser and sweep
Retouch, and the flashlight transmitted through beam splitting filter optical signal after treatment be converted into the signal of telecommunication,
Thus obtain the profile information of whole sample, can analyze in judgement sample according to this profile information
The information of ingredient.The present invention is capable of the Fast nondestructive evaluation for powder, especially
It is the non-destructive quality monitoring in process of manufacture such as milk powder and flour, there is higher application
It is worth.
Last it is noted that above example is only in order to illustrate technical scheme, and
Non-to its restriction；Although the present invention being described in detail with reference to previous embodiment, ability
The those of ordinary skill in territory is it is understood that it still can be to the skill described in foregoing embodiments
Art scheme is modified, or wherein portion of techniques feature is carried out equivalent；And these are repaiied
Change or replace, not making the essence of appropriate technical solution depart from various embodiments of the present invention technical side
The spirit and scope of case.
Claims (6)
1. the noncontact composition detection system of a powder, it is characterised in that including:
Light shield, be used for placing laser line light source, two-dimension translational platform, sample, beam splitting filter,
Camera lens, Raman spectrometer and CCD, to ensure detection dark situation；
Laser line light source, is used for launching linear laser；
Described laser line light source includes Laser emission optical filter, is used for making described laser line light source send out
Penetrate Raman diffused light, get rid of Rayleigh scattering light；
Two-dimension translational platform, is used for placing sample and at moving in two dimensional directions sample, makes the whole of sample
Individual surface accepts the dynamic line scanning of laser；
Beam splitting filter, is placed between described laser line light source, described sample and described camera lens,
For reflecting the linear laser extremely described sample surfaces that described laser line light source is launched, and will be from institute
The flashlight scanned through dynamic line stating that sample surfaces obtains is transferred to camera lens；
Camera lens, for being collected from the flashlight scanned through dynamic line that described sample surfaces obtains；
High-pass filter, between described camera lens and described Raman spectrometer, for by described
Flashlight carries out high pass optical filtering；
Raman spectrometer, for receiving the flashlight after high pass filters, obtains optical signal；
CCD, is connected with described Raman spectrometer, for described optical signal is converted to the signal of telecommunication,
Obtain the profile information of whole sample, and be sent to processor；
Processor, analyzes sample composition for the profile information according to described whole sample；
Described beam splitting filter is positioned in three-dimensional mobile platform and high-precision rotary mounting seat, is used for
Regulate the exact position of described beam splitting filter；
The wavelength of described beam splitting filter is 785nm, and a length of 801nm of edge wave, laser rays inclines
Rake angle is 45 degree；
Described high-pass filter wavelength is 785nm, a length of 805nm of edge wave；
Described light shield is inverted T shape, is used for preventing dust from entering system；
The power of described laser line light source is 5W or 8W.
The noncontact composition detection system of powder the most according to claim 1, its feature
It is:
The wavelength of described Laser emission optical filter is 785nm.
The noncontact composition detection system of powder the most according to claim 1, its feature
It is:
Described CCD is arranged on spherical axle base platform, is used for ensureing that described CCD is with described
Vertically connect between Raman spectrometer；
Described spherical axle base platform is: swing at the bottom of the spherical axle of 90 degree from level to vertical direction
Seat platform.
The noncontact composition detection system of powder the most according to claim 3, its feature
It is:
Described spherical axle base platform is fixed on enhancing rigidity bread board, for stably fixing institute
State CCD.
The noncontact composition detection of powder the most according to any one of claim 1 to 4
System, it is characterised in that described processor is additionally operable to:
The characteristic information of the profile information analysis reflection sample composition according to described whole sample, ginseng
According to the component list of known variety classes powder, analyze sample composition and build based on spectrum letter
Cease analyzes detection model in real time；
And/or, obtain the surface topography of described sample, set up the profile information of described whole sample
Corresponding relation with its surface topography.
6. the noncontact component detection method of a powder, it is characterised in that utilize such as right
The noncontact composition detection system requiring the powder any one of 1-5 detects, including:
Laser carries out two dimension dynamically line scanning after beam splitting filter to sample, and filters through beam splitting
Light is collected from the flashlight of the whole sample that sample surfaces obtains；
Receive the flashlight after high pass filters, obtain optical signal；
Described optical signal is converted to the signal of telecommunication, obtains the profile information of whole sample；
The profile information of described whole sample is analyzed, exports sample composition.
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| CN201410003217.8A CN103760146B (en) | 2014-01-03 | 2014-01-03 | A kind of noncontact composition detection system and method for powder |
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Families Citing this family (10)
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| CN104020153B (en) * | 2014-06-16 | 2017-02-01 | 中国农业大学 | Raman spectrum detection system and method |
| CN103994973B (en) * | 2014-06-16 | 2017-06-16 | 中国农业大学 | A kind of Raman spectrum detection head and detection method |
| CN104237199A (en) * | 2014-08-28 | 2014-12-24 | 中国农业大学 | Raman detection system and Raman detection method based on diffusion mode |
| CN104833450B (en) * | 2015-05-31 | 2017-11-07 | 厦门大学 | The Raman test system and its method of testing of a kind of in-situ test LED stress |
| US9826918B2 (en) * | 2015-08-28 | 2017-11-28 | Juergen Marx | Method and device for detecting the surface structure and properties of a probe |
| WO2019036941A1 (en) * | 2017-08-23 | 2019-02-28 | 深圳前海达闼云端智能科技有限公司 | Substance detection method and apparatus, storage medium, and electronic device |
| DE102017127122B4 (en) * | 2017-11-17 | 2022-05-05 | Endress+Hauser Conducta Gmbh+Co. Kg | Spectrometric meter |
| CN108918504A (en) * | 2018-09-12 | 2018-11-30 | 广州医科大学 | The system and method for Gemstone Identification is realized based on Raman spectrum and OCT |
| CN109115747B (en) * | 2018-09-12 | 2021-07-13 | 广州医科大学 | System and method for measuring glass material properties based on Raman spectrum and OCT |
| CN112213293A (en) * | 2020-08-21 | 2021-01-12 | 杭州健澄科技有限公司 | Method for detecting powder component content |
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