CN110220886A - Coin discrimination system and application method based on laser induced breakdown spectroscopy - Google Patents
Coin discrimination system and application method based on laser induced breakdown spectroscopy Download PDFInfo
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- CN110220886A CN110220886A CN201910644588.7A CN201910644588A CN110220886A CN 110220886 A CN110220886 A CN 110220886A CN 201910644588 A CN201910644588 A CN 201910644588A CN 110220886 A CN110220886 A CN 110220886A
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- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 27
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 238000002474 experimental method Methods 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims description 15
- 230000003595 spectral effect Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 11
- 239000013307 optical fiber Substances 0.000 claims description 7
- 208000033748 Device issues Diseases 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- 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
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/718—Laser microanalysis, i.e. with formation of sample plasma
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- Plasma & Fusion (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses the coin discrimination systems based on laser induced breakdown spectroscopy, it is characterised in that: loading sabot is horizontally disposed circular configuration, and surface is equipped with several coin grooves on it；It is provided tiltedly with dropping channel in the side of loading sabot, the lower end of dropping channel extends to the surface of a wherein coin groove, and the upper end tilts upward extension, and is connected to the output end of cleaning device；A lens are equipped in the surface of another coin groove, and are provided tiltedly with reflecting mirror right above lens；The output end of first laser device is horizontally disposed towards the reflecting mirror, and its first laser issued is reflected on lens by reflecting mirror, and refocusing is on discarded coin；It is also horizontal equipped with digital delay generator in the side of first laser device, and be connected with each other therebetween.The present invention avoids by the way that coin cleaning is replaced integrated design with Detecting of coin and frequently replaces discarded coin, to improve the efficiency and accuracy of Detecting of coin.
Description
Technical field
The present invention relates to Detecting of coin technical fields, and in particular to the coin based on laser induced breakdown spectroscopy is screened
System and application method.
Background technique
In recent years, since the rapid development paid on line, the common means of payment, such as coin or bank note are all fast
Speed is eliminated in large quantities；Wherein, the recycling of coin becomes matter of utmost importance.Different coins has different metal components, recycling
When should carry out separating recycling for different metal ingredient, and discarded coin due to aoxidizing for a long time, the corrosion of environment and
Other pollutions, make it difficult to screen discarded coin with usual mode.
At present in LIBS experiment, common LIBS instrument is required after finishing discarded coin experiment each time by sample
Product are changed, and then again put another sample up, this process both wastes the time, it is also possible to cause laser fine
Ground is beaten on sample, to influence the spectral line that computer end shows.
Summary of the invention
The technical problem to be solved in the present invention is to provide based on laser induced breakdown spectroscopy coin discrimination system and
Application method, by avoiding coin cleaning and the integrated design of Detecting of coin replacement and frequently replacing discarded coin, thus
Improve the efficiency and accuracy of Detecting of coin.
In order to solve the above technical problems, the present invention adopts the following technical scheme that: of the invention based on laser-induced breakdown light
The coin discrimination system of spectral technology, innovative point are: including cleaning device, dropping channel, loading sabot, first laser device,
Reflecting mirror, lens and digital delay generator；The loading sabot be horizontally disposed circular configuration, and on it surface along circle
Circumferential direction is also horizontal uniformly to offer several coin grooves to match with discarded coin；In a upper side of the loading sabot
It is also provided tiltedly with the dropping channel to match with discarded coin, it is recessed that the lower end of the dropping channel extends to a wherein coin
The surface of slot, and the upper end tilts upward extension, and is connected to the output end of the cleaning device；It is recessed in another coin
The surface of slot also level is fixed with a lens, and also tilts in the surface of the lens and be fixed with a reflecting mirror；?
The acute angle side of the reflecting mirror is also horizontal to be equipped with first laser device, and the output end of the first laser device is towards the reflection
The setting of mirror direction；The first laser that the first laser device issues is reflected on the lens by the reflecting mirror, then is passed through
The lens focus is on the discarded coin in the correspondence coin groove；In the side of the first laser device, also level is equipped with
Digital delay generator, and the digital delay generator is connect with the first laser device.
Preferably, the cleaning device includes second laser, bottom plate, fixed column, idler wheel and conveyer belt；The bottom plate is
Horizontally disposed rectangle structure, and surface also bilateral symmetry is equipped with fixed column vertically on it, under each fixed column
End be fixedly connected with the bottom plate, and hold on it vertically be equipped with idler wheel, each idler wheel with the corresponding fixation
Column rotation connection；The conveyer belt is socketed in a ring on two idler wheels, and as the idler wheel rotates clockwise；Institute
The surface for stating conveyer belt is also equipped with second laser vertically, and the output end of the second laser is arranged straight down, and its
The second laser of sending carries out cleaning treatment to the discarded coin surface on the conveyer belt.
Preferably, the digital delay generator is connected with the second laser.
It preferably, further include the second pedestal and shaft；It is also equipped with vertically in the lower surface middle position of the loading sabot
Shaft, and the upper end of the shaft is fixedly connected with the loading sabot；Second pedestal is horizontally disposed inverted T-shaped knot
Structure, and its top matches with the shaft；The lower end of the shaft is socketed in the top of second pedestal, and the loading
Sabot is rotatablely connected by shaft and second pedestal.
Preferably, the rotation direction of the loading sabot is clockwise.
Preferably, the inside of the dropping channel is the flat structure for preventing discarded coin rolls, and with discarded coin phase
Matching；In also horizontal the first pedestal being equipped with for supporting the dropping channel in the lower surface of the dropping channel, and described the
The upper end of one pedestal is fixedly connected with the dropping channel.
Preferably, the tilt angle of the dropping channel is 45 ° ~ 60 °, and the fixed setting of its lower end is one described hard wherein
The top of coin groove, the upper end of the dropping channel are against the close loading sabot side of the conveyer belt；Discarded coin
Enter in the dropping channel under the drive of the conveyer belt, and the corresponding coin groove is entered by the dropping channel
It is interior.
Preferably, the tilt angle of the reflecting mirror is 45 °, and the diameter of the coin groove is slightly larger than discarded coin
Maximum gauge.
It preferably, further include acquisition probe, spectrometer and data processing end；In the correspondence coin that first laser focuses
The surface side of groove is also fixed with acquisition probe, and the acquisition probe is connect by optical fiber with the spectrometer, and institute
Spectrometer is stated also to connect with the digital delay generator and the data processing end respectively.
The application method of coin discrimination system based on laser induced breakdown spectroscopy of the invention, innovative point are
The following steps are included:
(1) different discarded coins is placed on one by one on the conveyer belt of cleaning device, is being guaranteed between adjacent discarded coin
While being spaced consistent with the interval between adjacent coin groove, guarantee the revolving speed of conveyer belt and the revolving speed phase one of loading sabot
It causes；Then driven by the conveyor belt, discarded coin is moved to the underface of the second laser of second laser sending, while the
Dual-laser carries out cleaning treatment to the surface of discarded coin；
(2) the discarded coin after cleaning enters in dropping channel driven by the conveyor belt, and enters correspondence by dropping channel
Coin groove in so that the position of discarded coin is fixed；
(3) loading sabot rotates clockwise, and discarded coin to be detected is turned to the first laser of first laser device sending
Underface；Next discarded coin is entered in next coin groove by dropping channel simultaneously；
(4) first laser that first laser device issues is reflected on lens by reflecting mirror, then by lens focus corresponding hard
On discarded coin in coin groove；
(5) collected characteristic light is transmitted to spectrometer through optical fiber by acquisition probe, then is input to data processing by spectrometer
End finally obtains experiment spectral line, then experiment spectral line is compared with standard spectral line, that is, can determine whether the type of discarded coin.
The invention has the following advantages: the present invention is by replacing integrated set with Detecting of coin for coin cleaning
Meter, after finishing one group of discarded Detecting of coin experiment, only need to rotate loading sabot can carry out next group of experiment, be effectively prevented
Influence of the replacement of discarded coin to experimental data, while also avoiding frequently replacing discarded coin and leading to first laser not
The phenomenon that getting to discarded coin surface to be detected, to improve the efficiency and accuracy of discarded Detecting of coin.
Detailed description of the invention
It, below will be to needed in the embodiment in order to more clearly illustrate the technical solution in the embodiment of the present invention
Attached drawing is simply introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments recorded in the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that the present invention is based on the structural schematic diagrams of the coin discrimination system of laser induced breakdown spectroscopy.
Wherein, 1- cleaning device；2- dropping channel；3- loading sabot；4- first laser device；5- spectrometer；6- reflecting mirror；
7- lens；8- digital delay generator；9- data processing end；10- acquisition probe；11- second laser；12- second laser；
13- bottom plate；14- fixed column；15- idler wheel；16- conveyer belt；17- discards coin；The first pedestal of 21-；31- coin groove；32- turns
Axis；The second pedestal of 33-；41- first laser；51- optical fiber.
Specific embodiment
Technical solution of the present invention will be clearly and completely described by specific embodiment below.
Coin discrimination system based on laser induced breakdown spectroscopy of the invention, including cleaning device 1, dropping channel
2, loading sabot 3, first laser device 4, reflecting mirror 6, lens 7 and digital delay generator 8；Specific structure is as shown in Figure 1, loading
Sabot 3 is horizontally disposed circular configuration, and along the circumferential direction also level is uniformly offered several and discarded hard on surface on it
The coin groove 31 that coin 17 matches, wherein the diameter of coin groove 31 is slightly larger than the maximum gauge of discarded coin 17；The present invention
Coin groove 31 is opened up in loading sabot 3, is fixed in corresponding coin groove 31 convenient for discarded coin 17, to keep away
Frequent the phenomenon that replacing discarded coin 17 and first laser is caused not get to discarded 17 surface of coin to be detected is exempted from, has improved useless
Abandon the accuracy that coin 17 detects.
As shown in Figure 1, being also equipped with shaft 32, the upper end of the shaft 32 vertically in the lower surface middle position of loading sabot 3
It is fixedly connected with loading sabot 3, and its lower end is also rotatablely connected and is equipped with the second pedestal 33；Second pedestal 33 is horizontally disposed
Inverted T-shaped structure, and its top matches with shaft 32；The lower end of shaft 32 is socketed in the top of the second pedestal 33, and loading fills
Disk 3 is rotatablely connected by shaft 32 and the second pedestal 33；Wherein, the rotation direction of loading sabot 3 is clockwise.The present invention
The design rotated clockwise using loading sabot 3 need to only rotate loading sabot after finishing one group of discarded 17 test experience of coin
3 can carry out next group of experiment, effectively prevent frequently replacing discarded influence of the coin 17 to experimental data, to improve
The efficiency and accuracy that discarded coin 17 detects.
The present invention is also provided tiltedly with the dropping channel 2 to match with discarded coin 17 in a upper side of loading sabot 3, should
The tilt angle of dropping channel 2 is 45 ° ~ 60 °, and its lower end is fixed at the top of one of coin groove 31, such as Fig. 1
Shown, the inside of dropping channel 2 is the flat structure for preventing discarded coin 17 from rolling, and is matched with discarded coin 17；Under
Fall also horizontal the first pedestal 21 being equipped with for supporting dropping channel 2 in the lower surface in channel 2, and the upper end of first pedestal 21 with
Dropping channel 2 is fixedly connected.
The upper end of dropping channel 2 tilts upward extension, and is connected to the output end of cleaning device 1；As shown in Figure 1, cleaning
Device 1 includes second laser 11, bottom plate 13, fixed column 14, idler wheel 15 and conveyer belt 16；Bottom plate 13 is horizontally disposed rectangular
Shape structure, and on it surface also bilateral symmetry vertically be equipped with fixed column 14, the lower end of each fixed column 14 with bottom plate 13
It is fixedly connected, and holds be equipped with idler wheel 15 vertically on it, each idler wheel 15 is rotatablely connected with corresponding fixed column 14；It passes
Band 16 is sent to be socketed on two idler wheels 15 in a ring, and as idler wheel 15 rotates clockwise；It is also perpendicular in the surface of conveyer belt 16
It is directly equipped with second laser 11, the output end of the second laser 11 is arranged straight down, and its second laser 12 issued is right
17 surface of discarded coin on conveyer belt 16 carries out cleaning treatment.Wherein, the upper end of dropping channel 2 is against the close of conveyer belt 16
3 side of loading sabot.Coin 17 is discarded in the present invention to clean under the drive of conveyer belt 16 into 12 region of second laser
Processing, the discarded coin 17 after then cleaning enters in dropping channel 2 under the drive of conveyer belt 16, and passes through dropping channel 2
Into in corresponding coin groove 31, detected so as to avoid the discarded coin 17 of frequent replacement.
The present invention is fixed with a lens 7 in the surface of another coin groove 31 also level, and lens 7 just on
Side's also inclination is fixed with a reflecting mirror 6, and the tilt angle of the reflecting mirror is 45 °；As shown in Figure 1, in the acute angle one of reflecting mirror 6
Side is also horizontal to be equipped with first laser device 4, and the output end of first laser device 4 is arranged towards 6 direction of reflecting mirror；First laser device 4
The first laser 41 of sending is reflected on lens 7 by reflecting mirror 6, then is focused in corresponding coin groove 31 by lens 7
On discarded coin 17；In the side of first laser device 4, also level is equipped with digital delay generator 8, and the digital delay generator 8
It is connect respectively with first laser device 4 and second laser 11.Wherein, this is smooth using the U.S. DG535 for digital delay generator 8
Good fortune delay pulse generator, for controlling the time delay of first laser device 4 and second laser 11.
As shown in Figure 1, being also fixed with acquisition in the surface side of the correspondence coin groove 31 of the focusing of first laser 41
Probe 10, acquisition probe 10 are connect by optical fiber 51 with spectrometer 5, and spectrometer 5 also respectively with digital delay generator 8 and
Data processing end 9 connects.Wherein, spectrometer 5 use Ai Wantisi AvaSpec-2048-4, and by digital delay generator 8
Control its time delay；Data processing end 9 is ordinary PC.
The application method of coin discrimination system based on laser induced breakdown spectroscopy of the invention, including following step
It is rapid:
(1) different discarded coins 17 is placed on one by one on the conveyer belt 16 of cleaning device 1, is guaranteeing adjacent discarded coin 17
Between interval and adjacent coin groove 31 between interval it is consistent while, guarantee conveyer belt 16 revolving speed and loading sabot
3 revolving speed is consistent；Then under the drive of conveyer belt 16, discarded coin 17 is moved to second laser 11 issues second and swashs
The underface of light 12, while second laser 12 carries out cleaning treatment to the surface of discarded coin 17；
In above-mentioned steps, when the second laser 12 that second laser 11 issues is absorbed by the pollution layer for discarding 17 surface of coin
Afterwards, it will form the plasma (the unstable gas of highly ionized) sharply expanded, shock wave generated, so that pollution layer becomes broken
Piece is simultaneously removed.In this process, light impulse length must be short enough, to avoid discarded coin 17 is destroyed；Simultaneously
It must be strictly controlled laser parameter, wherein laser parameter range should be between two threshold values, and lower threshold value depends on pollution
Layer, it is necessary to assure pollution layer can be removed；Upper threshold value depends on the material of discarded coin, it is necessary to assure it will not be allowed by broken
It is bad；
(2) clean after discarded coin 17 under the drive of conveyer belt 16 enter dropping channel 2 in, and by dropping channel 2 into
Enter in corresponding coin groove 31, so that the position of discarded coin 17 is fixed；
(3) loading sabot 3 rotates clockwise, and first that discarded coin 17 to be detected is turned to that first laser device 4 issues swashs
The underface of light 41；Next discarded coin 17 is entered in next coin groove 31 by dropping channel 2 simultaneously, and is waited to be checked
It surveys；
(4) first laser 41 that first laser device 4 issues is reflected on lens 7 by reflecting mirror 6, then is focused on by lens 7
On discarded coin 17 in corresponding coin groove 31；
(5) collected characteristic light is transmitted to spectrometer 5 through optical fiber 51 by acquisition probe 10, then is input to data by spectrometer 5
Processing end 9 finally obtains experiment spectral line, then experiment spectral line is compared with standard spectral line, that is, can determine whether the kind of discarded coin
Class；
In above-mentioned steps, different wave bands is selected to compare and analyze as far as possible, to the Wave crest and wave trough for the spectrum that experiment obtains
Locating wavelength location is compared with standard spectral line, when similarity reaches 60%, that is, can determine whether the type of the discarded coin 17；
When similarity is lower than 30%, that is, it can determine whether that the discarded coin 17 is not belonging to a certain coin；When similarity is between 30% ~ 60%
When, secondary experiment measurement judgement again must be carried out.
Meanwhile in an experiment with the increase for acquiring the discarded 17 spectral information time of coin, the central wavelength of wave band can be by
Gradually mobile to the direction of long wavelength, band number is bigger, and the degrees of offset of central wavelength will be bigger, this phenomenon is spectral line drift
It moves.In order to handle this phenomenon, the calibration model of proposition line drift can be handled and analyze through a large number of experiments to correct this
One phenomenon.
Beneficial effects of the present invention: the present invention is being done by the way that coin cleaning is replaced integrated design with Detecting of coin
After complete one group discarded 17 test experience of coin, only need to rotate loading sabot 3 can carry out next group of experiment, effectively prevent giving up
Influence of the replacement of coin 17 to experimental data is abandoned, while also avoiding frequently replacing discarded coin 17 and leading to first laser 41
Not the phenomenon that not getting to discarded 17 surface of coin to be detected, to improve efficiency and accuracy that discarded coin 17 detects.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to design of the invention
It is defined with range, without departing from the design concept of the invention, ordinary engineering and technical personnel is to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, claimed skill of the invention
Art content is all documented in technical requirements book.
Claims (10)
1. the coin discrimination system based on laser induced breakdown spectroscopy, it is characterised in that: including cleaning device, fall and lead to
Road, loading sabot, first laser device, reflecting mirror, lens and digital delay generator；The loading sabot is horizontally disposed circle
Shape structure, and along the circumferential direction also level uniformly offers several coin grooves to match with discarded coin on surface on it；
The dropping channel to match with discarded coin is also provided tiltedly in a upper side of the loading sabot, under the dropping channel
End extends to the surface of a wherein coin groove, and the upper end tilts upward extension, and defeated with the cleaning device
Outlet connection；A lens are fixed in the surface also level of another coin groove, and in the surface of the lens
Also inclination is fixed with a reflecting mirror；In the acute angle side of the reflecting mirror, also level is equipped with first laser device, and described first
The output end of laser is arranged towards the reflecting mirror direction；The first laser that the first laser device issues passes through the reflection
Mirror reflects on the lens, then through the lens focus on the discarded coin in the correspondence coin groove；Described
The side of first laser device is also horizontal to be equipped with digital delay generator, and the digital delay generator and the first laser device
Connection.
2. the coin discrimination system according to claim 1 based on laser induced breakdown spectroscopy, it is characterised in that: institute
Stating cleaning device includes second laser, bottom plate, fixed column, idler wheel and conveyer belt；The bottom plate is horizontally disposed rectangle
Structure, and surface also bilateral symmetry is equipped with fixed column vertically on it, the lower end of each fixed column is solid with the bottom plate
Fixed connection, and hold be equipped with idler wheel vertically on it, each idler wheel is rotatablely connected with the corresponding fixed column；The biography
Band is sent to be socketed on two idler wheels in a ring, and as the idler wheel rotates clockwise；In the surface of the conveyer belt
It is also equipped with second laser vertically, the output end of the second laser is arranged straight down, and the second laser pair of its sending
Discarded coin surface on the conveyer belt carries out cleaning treatment.
3. the coin discrimination system according to claim 2 based on laser induced breakdown spectroscopy, it is characterised in that: institute
Digital delay generator is stated to be connected with the second laser.
4. the coin discrimination system according to claim 1 based on laser induced breakdown spectroscopy, it is characterised in that: also
Including the second pedestal and shaft；It is also equipped with shaft, and the shaft vertically in the lower surface middle position of the loading sabot
Upper end is fixedly connected with the loading sabot；Second pedestal is horizontally disposed inverted T-shaped structure, and its top and described turn
Axis matches；The lower end of the shaft is socketed in the top of second pedestal, and the loading sabot by shaft with it is described
The rotation connection of second pedestal.
5. the coin discrimination system according to claim 4 based on laser induced breakdown spectroscopy, it is characterised in that: institute
The rotation direction of loading sabot is stated as clockwise.
6. the coin discrimination system according to claim 1 based on laser induced breakdown spectroscopy, it is characterised in that: institute
The inside for stating dropping channel is the flat structure for preventing discarded coin rolls, and is matched with discarded coin；Lead in described fall
Also horizontal the first pedestal being equipped with for supporting the dropping channel in the lower surface in road, and the upper end of first pedestal with it is described
Dropping channel is fixedly connected.
7. the coin discrimination system according to claim 6 based on laser induced breakdown spectroscopy, it is characterised in that: institute
The tilt angle for stating dropping channel is 45 ° ~ 60 °, and the fixed setting of its lower end is in the top of the wherein one coin groove, described
The upper end of dropping channel is against the close loading sabot side of the conveyer belt；Drive of the discarded coin in the conveyer belt
It is lower to enter in the dropping channel, and entered in the corresponding coin groove by the dropping channel.
8. the coin discrimination system according to claim 1 based on laser induced breakdown spectroscopy, it is characterised in that: institute
The tilt angle for stating reflecting mirror is 45 °, and the diameter of the coin groove is slightly larger than the maximum gauge of discarded coin.
9. the coin discrimination system according to claim 1 based on laser induced breakdown spectroscopy, it is characterised in that: also
Including acquisition probe, spectrometer and data processing end；In the surface side for the correspondence coin groove that first laser focuses
Also be fixed with acquisition probe, the acquisition probe is connect by optical fiber with the spectrometer, and the spectrometer also respectively with
The digital delay generator and data processing end connection.
10. the application method of the coin discrimination system based on laser induced breakdown spectroscopy, it is characterised in that including following step
It is rapid:
(1) different discarded coins is placed on one by one on the conveyer belt of cleaning device, is being guaranteed between adjacent discarded coin
While being spaced consistent with the interval between adjacent coin groove, guarantee the revolving speed of conveyer belt and the revolving speed phase one of loading sabot
It causes；Then driven by the conveyor belt, discarded coin is moved to the underface of the second laser of second laser sending, while the
Dual-laser carries out cleaning treatment to the surface of discarded coin；
(2) the discarded coin after cleaning enters in dropping channel driven by the conveyor belt, and enters correspondence by dropping channel
Coin groove in so that the position of discarded coin is fixed；
(3) loading sabot rotates clockwise, and discarded coin to be detected is turned to the first laser of first laser device sending
Underface；Next discarded coin is entered in next coin groove by dropping channel simultaneously；
(4) first laser that first laser device issues is reflected on lens by reflecting mirror, then by lens focus corresponding hard
On discarded coin in coin groove；
(5) collected characteristic light is transmitted to spectrometer through optical fiber by acquisition probe, then is input to data processing by spectrometer
End finally obtains experiment spectral line, then experiment spectral line is compared with standard spectral line, that is, can determine whether the type of discarded coin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910644588.7A CN110220886A (en) | 2019-07-17 | 2019-07-17 | Coin discrimination system and application method based on laser induced breakdown spectroscopy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910644588.7A CN110220886A (en) | 2019-07-17 | 2019-07-17 | Coin discrimination system and application method based on laser induced breakdown spectroscopy |
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