CN204866599U - Photic many spectral imaging's of initiative excitation formula sorting facilities - Google Patents
Photic many spectral imaging's of initiative excitation formula sorting facilities Download PDFInfo
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- CN204866599U CN204866599U CN201520642669.0U CN201520642669U CN204866599U CN 204866599 U CN204866599 U CN 204866599U CN 201520642669 U CN201520642669 U CN 201520642669U CN 204866599 U CN204866599 U CN 204866599U
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Abstract
The utility model discloses a photic many spectral imaging's of initiative excitation formula sorting facilities, examined material conveyor, initiative excitation light source, many spectral imaging device, selected separately final controlling element and central process computer including frame, quilt. The utility model discloses photic many spectral imaging's of initiative excitation formula sorting facilities utilizes and to be examined the material and can reflect under of the shining of light or external radiation or launch the spectrum that has certain characteristic, many spectral imaging device is collected from the spectral signature and one -tenth image signal who is examined the material, thereby material or product are examined in discernment, the sorting of completion to being examined the material, dry process discernment has, the dry process is selected separately, high reliability and high resolution, it is accurate to select separately, select separately high -efficiently, the characteristics of the no three wastes of sorting etc, has wide applicability, to various materials, various state (solid state, it is liquid, the gaseous state), mixtures can all implement to select separately.
Description
Technical field
The utility model relates to the screening installation of the photic multispectral imaging of a kind of active excitation formula, belongs to mixed material sorting field.
Background technology
In material production field, no matter belong to the mining industry of the primary industry, agricultural, fishery and animal husbandry, still belong to the manufacturing industry of secondary industry, still belong to the distributive services of the tertiary industry, all there is the situation that a large amount of materials or product needed carry out sorting and grouping.As the iron ore mining industry in mining industry, mining ore out, wherein must mix and have Gao Pin, low product and impurity component, before input smelting iron and steel, must carry out ore-dressing practice to iron ore; Corn in agricultural is gathered and storage industry, and corn exists size, fragmentation, the color and luster of particle, the problem such as to go mouldy, and needs to carry out classification operation; In manufacturing industry, must detect raw-material quality and classify, as size, weight, shape, color and luster, composition, surface nature etc. must reach specified standard, need detection and the sorting of carrying out batch, qualified reception, underproofly does handling return; , must there is the problem of yield rate in the manufactured goods in manufacturing industry, before packing is dispatched from the factory, need to carry out QC detection and classification, make the qualified product introduction field of circulation, underproof product does scraps process; In service trade field, also need the process that detects article and classify, storage aspect of particularly classifying, has huge demand.Therefore, the universal screening installation of a kind of efficient, high accuracy of exploitation is badly in need of.
Utility model content
The utility model provides the screening installation of the photic multispectral imaging of a kind of active excitation formula, features such as having highly versatile, accuracy is high, efficiency is high, cost is low, be pollution-free.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:
A screening installation for the photic multispectral imaging of active excitation formula, comprises frame, checking matter material conveying device, initiatively excitation source, multispectral imaging device, sorting actuating unit and central processing computer;
Checking matter material conveying device comprises variable-frequency motor, conveyer belt, initiatively roller and driven roller; Variable-frequency motor, initiatively roller and driven roller are installed in frame; The periphery that conveyer belt one end is socketed in the periphery of initiatively roller, the other end is socketed in driven roller; Variable-frequency motor electrically connects with active roller;
Multispectral imaging device is vertically arranged in the frame above conveyer belt;
Initiatively excitation source be arranged on above conveyer belt, in the frame of multispectral imaging device one or both sides, to the tested material on conveyer belt or fly away from conveyer belt and tested material in flight way realizes illumination;
Sorting actuating unit comprises high pressure tank, high-speed electromagnetic valve and nozzle, and high pressure tank is arranged in the frame of conveyer belt end; High-speed electromagnetic valve has two or more and is all installed in the sidewall of high pressure tank; A nozzle is all equipped with in the outlet side of each high-speed electromagnetic valve;
Variable-frequency motor, multispectral imaging device, initiatively excitation source and high-speed electromagnetic valve all electrically connect with central processing computer.
Checking matter material conveying device: in order to play better conveying and supporting role to conveyer belt, preferably, initiatively roller and driven roller all have more than one.Conveyer belt operates under the drive of roller together with roller, forms the conveying device of tested material, and tested material is placed on conveyer belt, is transferred and drives and obtain motion energy, along with conveyer belt moves together.When tested material moves to the end of conveyer belt, continue the surface that conveyer belt is flown away from motion, form a parabola aloft, till this tested material falls earthward.
Initiatively excitation source: can use lighting source or excitation source, lighting source is preferably Halogen lamp LED, its emission spectrum covers 300 nanometers to the far infrared band of 30 microns; Excitation source can adopt mercury lamp and the xenon lamp of deep ultraviolet, also can be X-ray light source.Excitation source may use various laser, the Laser output of such as optical fiber laser, also can be its times spectrum line, also can be semiconductor laser, Solid State Laser, gas laser, even liquid laser.The laser excited can be the extremely short VUV of wavelength, as 193 nanometer lasers and 153 nanometer lasers; It can be the shorter x-ray laser of wavelength; Also can be the very long mid-infrared laser of wavelength or millimeter wave laser.When special requirement, lighting source can adopt the special source such as gamma ray projector, neutron ray source; Also microwave and millimeter wave energy beam can be used as lighting source.These excitation sources by by expand or scanning technique is irradiated to the surface of tested material on conveyer belt or tested material in-flight, enable to cover whole conveyer belt or by tested material in transmitting or the width falling tested material in process.
Multispectral imaging device: initiatively the irradiation of excitation source covers the width of whole conveyer belt, when tested material is through this irradiation band, various luminous effect can be produced in the surface or body of tested material, comprise light luminous effect, photo-thermal effect, photostrictive effectt, photoelectric effect, photochromic effect, nonlinear optical effect etc., these luminous effect signals are obtained by multispectral camera and form multispectral image; Directly comprise reflection, scattering, transmission, diffraction, interference, waveguiding effect etc. with the effect that light is relevant, according to the difference of the excitation source used, the information such as the uniformity of tested material, band structure, lattice structure can be obtained; The luminous effect relating to energy level variations comprises absorption, transmitting etc., can obtain the information such as the band structure of tested material, molecular vibration; What relate to elementary excitation effect in tested material comprises the relevant optical phenomenon of free electron, exciton, phonon, polaron, as energy level change up and down, the transmitting of exciton light, Ramam effect etc., the information such as the band structure of tested material, lattice vibration, lattice and electric field interaction can be detected; What relate to the nonlinear optical effect in tested material comprises the phenomenons such as frequency multiplication, self-induced transparency, absorption are saturated, automodulation, can be used for the identification of material category as fingerprint characteristic; The most simply belong to the identifications such as profile, size, image power in addition.Optical excitation also can cause other physical effect, as photothermal, photochromic, photo-induced telescopic etc.According to the characteristic of tested material, select above-mentioned optical excitation to cause one or more luminous effects, just can carry out imaging analysis to tested material on specific wave band, realize accurate sorting.Active excitation source is to the tested material on conveyer belt or fly away from conveyer belt and realize illumination at the tested material in way that flies, and multispectral imaging device is imaging shooting illuminated tested material.
The light path design of multispectral imaging device: from the optical information of tested material, after collecting with the angle of visual field of setting and aperture, enter beam splitting system, light equivalently or according to the mode of design is divided into N road light path: first via light, the second road light ... N-1 road light and N road light, from the angle of information, N road light path is equivalent.In multispectral imaging device, each road light all configures the image camera of an equivalent, the set of lenses comprising bandpass filter, diaphragm, narrow band pass filter, focal plane arrays (FPA) and can convert light.On each equivalent light distance, unique difference is, the centre wavelength of the narrow band pass filter in camera lens can be designed to different numerical value, corresponding to some characteristic value in tested material spectrum, form multispectral image information and be transported to central processing computer, material recognition software in central processing computer carries out com-parison and analysis by the multispectral image from different light paths, completes the identification to tested material variety, thus for the sorting to tested mixed material; Multispectral imaging device can adopt existing multi-spectral imager etc.
Sorting actuating unit: tested material is after leaving aforesaid checking matter material conveying device, and whereabouts of flying, forms a parabolic path.The design of nozzle makes to form certain angle of divergence from nozzle air-flow out, thus makes each nozzle can be responsible for the certain region corresponding with conveyor belt surface.A row or multi-row nozzle array can cover the breadth width of whole conveyer belt closely, when tested material to dart along parabolic path and under, through the position residing for nozzle, the order that high speed electromagnetic valve array sends according to central processing computer, open or close high-speed electromagnetic valve, if closed from the order request high-speed electromagnetic valve of central processing computer, then tested material will not be affected, freely fall along former flight parabolic path, if opened from the order request high-speed electromagnetic valve of central processing computer, high velocity air will spray from nozzle, hit tested material, then the parabolic flight track of tested material will be destroyed, tested material will be forced to depart from intrinsic parabolic flight track, the direction of high velocity air along nozzle ejection is departed from and is fallen.Preferably, between former parabolic flight track and the track fallen along high velocity air direction, arrange one and be separated dividing plate, can realize better being like this separated the sorting of tested material.
Material recognition software is installed in central processing computer, each function element and functional unit (comprise variable-frequency motor, multispectral imaging device, initiatively excitation source and high-speed electromagnetic valve, further preferably, comprise the signal of telecommunication that screening installation is all), no matter whether there is slave computer collaborative work, all must report instant status data to central processing computer, also operational order must be received from central processing computer, each function element and functional unit report and the detailed process receiving order etc., with reference to prior art.The result that central processing computer obtains according to the material recognition software be arranged on wherein, in conjunction with the positional information residing for tested material, high-speed electromagnetic valve to sorting executive system is assigned sorting and is performed instruction, realize material and divide selection operation, namely each function element and functional unit collaborative work under the commander of central processing computer, complete the operations such as the acceleration of tested material, identification, sorting.The connected mode of each function element and functional unit and central processing computer: when the number of total function element and functional unit is more, can adopt the bus structures connected mode shown in Fig. 7, all function element and functional unit are all connected with central processing computer by bus, and when the number of total function element and functional unit is less, then can adopt the star structure connected mode shown in Fig. 8, all function element and functional unit are all directly connected with central processing computer, aforementioned two kinds of connected modes respectively have pluses and minuses, can according to circumstances choice for use in concrete engineering project, bus structures connected mode, in theory can the very huge function element of linking number and functional unit, but because all functions element and functional unit all share a communication bus, when communication data amount is larger, may wait in line or the situation of bus congestion, processing speed is caused to be limited to the situation of bus communication speed, processing speed is declined, and star structure connected mode, owing to being limited to the PORT COM number of central processing computer, the function element that can connect in theory and the number of functional unit fewer, but be connected with central processing computer because all functions element and functional unit are all direct, communication speed is very fast, the processing speed of equipment is determined by the speed of central processing computer, in general than comparatively fast.
Above-mentioned material recognition software is analyzed by the image intensity obtained multispectral device and is then compared with standard sample, namely the identification to material variety can be realized, the result that central processing computer obtains according to material recognition software, in conjunction with the positional information residing for checking matter materials and parts, assign sorting to sorting actuating unit and perform instruction, realize material and divide selection operation, the specific implementation of software and control procedure, with reference to prior art.
Central processing computer is after the identifying information obtaining target material, sorting action can't be assigned at once, it must also will utilize material recognition software to obtain the profile information of this target material, the central point calculating this target plastic part and this central point positional information on the conveyor belt, and concrete acquisition methods and computational methods are with reference to prior art.
When utilizing above-mentioned screening installation to carry out sorting to mixed material, tested material advances along the direction of motion of conveyer belt on the conveyor belt, first through the cog region of multispectral imaging device, then when it arrives the end of conveyer belt, leave the surface of conveyer belt, along pre-designed flight path, formation work parabola, when high-speed electromagnetic valve performs sort instruction, can spray high-speed gas from nozzle, blow off target material former work parabola, thus realize the separation of material.
Initiatively roller and driven roller by conveying belt tension, and can drive its transmission, and the transmission speed of conveyer belt can regulate by regulating the rotating speed of variable-frequency motor; Initiatively excitation source is arranged on multispectral imaging device one or both sides is to make the initiatively working light path of excitation source and the working light path of multispectral imaging device at a certain angle, thus improve the accuracy of sorting, initiatively excitation source can be more than one, specifically designs as required; High-speed electromagnetic valve can be designed to various array, nozzle array is corresponding with high speed electromagnetic valve array, and (nozzle is arranged on the port of export of each high-speed electromagnetic valve, nozzle directly can be connected with the port of export and also be connected with the port of export by pipeline), nozzle array is installed in the parabolical upper limb of flight path of the tested material through design, also lower edge can be arranged on, by target material from upper or under to blow off former flight path, high speed electromagnetic valve array performs a point selection operation according to the instruction from central processing computer.
Above-mentioned multispectral imaging device, initiatively excitation source is to the material on conveyer belt or the material realization illumination of flying away from conveyer belt, the optical physics effect that tested material produces under optical excitation and Photochemical effects information are captured imaging by multispectral imaging device, identify with the form of light spectrum image-forming.The utility model has applicability widely, may be used on all trades and professions.
Tested material because of material difference, and adopts different light sources and causes above-mentioned different optical physics effect and Photochemical effects, thus realizes the identification sorting to tested material, and specifically, the corresponding relation between light source and institute's priming effect is with reference to prior art.Such as, in retail warehousing industry, fruit very easily rots, due to rot after fruit, the difference of its composition and fresh fruit composition, they can demonstrate different absworption peaks in infrared spectrum, as long as multispectral imaging device is set in these different absworption peaks imaging spectral coverage, just can realize the identification sorting to rot fruit, plastics recovery field, identical plastic raw materials may add different fillers when applying, such as in some plastic products, be added with clay micro mist, some does not then have, active excitation source now can adopt green laser, when tested material passes through the cog region of multispectral imaging device, those are filled with the plastics of clay micro mist, the Raman spectrum with clay feature will be inspired, multispectral imaging device can select suitable narrow band pass filter, the sensor array only allowing the Raman line with clay feature to enter into multispectral imaging device by narrow band pass filter forms image, and image cannot be formed without the plastics of clay Characteristic Raman spectral line in multispectral imaging device, thus realize separation operation.
This application provides a kind of screening installation with the photic multispectral imaging of the active excitation formula of general applicability, even if detected material and product in the wave-length coverage be concerned under passive detection condition without any feature, the means of active illumination provided by the utility model or radiation excitation can be utilized, create some spectral signatures artificially, tested material is identified and sorting, greatly strengthens initiative and the flexibility of technology, especially, active illumination or x ray irradiation x, laser can be adopted to irradiate or X-ray, gamma-rays, the means such as neutron irradiation, detected material is made to send the light of special wave band, or make detected material show architectural feature signal by diffraction effect, also or obtained the vibration performance of detected material component elements by Ramam effect, according to the analysis to these spectral signatures, the application adopts multi-optical spectrum imaging technology with low cost, only the wavelength location of Special Significance is had to gather image information several, and without the need to adopting expensive high light spectrum image-forming equipment to imaging without distinction within the scope of spectral coverage, greatly reduce data processing amount, greatly simplifie the algorithm of material or Product checking, improve production efficiency of equipment.
The application's screening installation utilizes tested material can reflect under the irradiation of light or external radiation or launch the spectrum with certain feature, multispectral imaging device is collected from the spectral signal of tested material and imaging signal, thus identify tested material or product, complete the sorting to tested material, there is dry method identification, dry separation, resolution ratio is high, sorting is accurate, sorting is efficient, sorting is without the feature of the three wastes etc., and applicability is wide, can implement sorting to solid-state, liquid, Gaseous materials.
For the ease of go-on-go, preferably, the minimum point of checking matter material conveying device height is overhead 1-2 rice.
Preferably, the designing requirement of nozzle: is enable gas realize jet ejection, can not produce sinuous flow; Two is that the air-flow gushed out has certain dispersion angle requirement, is preferably 10 ~ 45 degree, namely nozzle spray air-flow the angle of divergence be preferably 10 ~ 45 degree.
Above-mentioned multispectral imaging device comprises light-dividing device; The light path design of multispectral imaging device: from the optical information of tested material, after entering light-dividing device, is equivalently divided into the equivalent light distance of more than two, on each equivalent light distance, all configures the image camera of an equivalent.
In order to improve the accuracy of sorting further, each image camera comprises from outside to inside successively: bandpass filter, set of lenses, narrow band pass filter and focal plane arrays (FPA), be provided with diaphragm between set of lenses.
From outside to inside above-mentioned, refer to from camera lens to the direction in camera lens.
The centre wavelength of above-mentioned narrow band pass filter is according to the spectral absorption peak feature-set of tested material in different wavelength location, and preferably, the centre wavelength of narrow band pass filter is set in the characteristic absorption peak position of tested material material spectrum.
Adopt above-mentioned screening installation, to the optical information from tested material, after collecting with the angle of visual field set and aperture, enter a light-dividing device, light equivalently or according to the mode of design is divided into N road light path (N is more than or equal to 1).From the angle of information, this N road light path is equivalent.In multispectral imaging device, each road light path all configures the image camera of an equivalent, the set of lenses comprising bandpass filter, diaphragm, narrow band pass filter, focal plane arrays (FPA) and can convert light.On each equivalent light distance, unique difference is, the centre wavelength of the narrow band pass filter in camera lens can be designed to different numerical value, corresponding to some characteristic value in tested material spectrum, for carrying out sorting to material.
Another kind as the application improves, and also as required, can substitute set of lenses by speculum group or crystal grating.
As wherein a kind of scheme of the application, the light path design of multispectral imaging device: from the optical information of tested material, after entering light-dividing device, equivalently be divided into two equivalent light distances, wherein, the centre wavelength of the narrow band pass filter that the centre wavelength of the narrow band pass filter on an equivalent light distance is selected on the wavelength location of 1656 nanometers, another equivalent light distance is selected at the wavelength location of 1724 nanometers.Can be used for the sorting to mixed plastic like this, the setting of centre wavelength have references to the characteristic absorption peak position of plastics, is suitable for the plastics variety detecting the overwhelming majority such as PET, HDPE, LDPE, PVC, PP, PS, PC, POM, PMMA common in plastic hybrid.
Adopt such scheme, the image that can obtain according to two cameras completes the sorting work to tested material, and without the need to not adding the continuous print Hyper spectral Imaging of examination to service band scope.
In order to improve the accuracy of sorting further, initiatively being installed as of excitation source: make from active excitation source along the illumination of its working light path outgoing be mapped to multispectral imaging device cog region and tested material, and from the cog region of multispectral imaging device and the light launched of tested material not directly enter into multispectral imaging device.Namely multispectral imaging device receive only from its cog region and on tested material surface diffused light and form image.Preferably, initiatively the working light path of excitation source and the working light path angle of multispectral imaging device range preferably from 30 ~ 60 degree.
The working light path of multispectral imaging device and the common factor of conveyer belt are multispectral imaging device cog regions on the conveyor belt.
Described active excitation source can have various concrete form according to the needs of practical application, and preferably, initiatively excitation source is Halogen lamp LED, ultraviolet source, ray source, Terahertz light source, millimeter-wave radiation source, microwave source and LASER Light Source.
The advantage that Halogen lamp LED is given prominence to is simple, economical, can provide from 300 nanometers until the extremely wide continuous spectral illumination of 30 microns, by the temperature regulating the operating current of input Halogen lamp LED to regulate Halogen lamp LED filament, thus the object regulating Halogen lamp LED operating spectral can be reached.
In order to ensure the accuracy of sorting, reduce costs, ultraviolet source is mercury lamp, xenon lamp simultaneously; Ray source is X source, gamma ray projector or neutron irradiation source; LASER Light Source is X-ray LASER Light Source, VUV LASER light source, Ultra-Violet Laser light source, visible laser source, infrared laser source or mid-infrared laser source.
Initiatively excitation source is according to the needs of practical application, also can select ultraviolet source and more the X-ray light source of short wavelength, gamma ray projector and the neutron irradiation source of the short wavelength such as mercury lamp, xenon lamp; Also Terahertz light source, millimeter-wave radiation source and microwave source can be selected; Also various LASER Light Source can be selected, comprise X-ray LASER Light Source, VUV LASER light source, Ultra-Violet Laser light source, visible laser source, infrared laser source, mid-infrared laser source etc., particularly, the LASER Light Sources such as semiconductor laser, Solid State Laser, gas laser, liquid laser, plastics laser, ceramic laser, glass laser, free-electron laser, PRK can be selected.
In order to improve the efficiency of separation further, all signal of telecommunication of screening installation all directly or by slave computer is connected with central processing computer indirectly, and connected mode is for connecting by bus structures or adopting star structure to connect.
Checking matter material conveying device will allow tested material reach desin speed exactly, make when these tested materials leave checking matter material conveying device, obtain enough speed thus set up parabolic flight track required in a design, metastable drop point must be had when tested material falls along parabolic flight track, when high-speed electromagnetic valve is opened, tested material to be blown off original parabolic path by the high velocity air sprayed from nozzle, when falling along new flight path, also metastable drop point must be had, and there is obvious differentiation with the drop point of former parabolic path.Tested material being left checking matter material conveying device, freely to fall formed track definition be former flight parabolic path, by tested material by the high velocity air sprayed from nozzle blow off original parabolic path fall the track definition that formed be new flight path, between the drop point and the drop point of new flight path of former flight parabolic path, be provided with separation dividing plate.The differentiation of different material can be realized so better, complete separation operation.
In order to reduce the noise of system further, further improve the accuracy of automatic fraction collector, preferably, the surface of conveyer belt is black hair side.Can reduce most possibly like this from the radiative interference of conveyer belt.
Initiatively excitation source can be selected to realize illumination to the tested material on conveyer belt or also can select flying away from conveyer belt and realizing illumination at the tested material in way that flies, in order to better Background suppression noise, preferably, initiatively excitation source is to flying away from conveyer belt, and the tested material in flight way realizes illumination (namely in the flight way of material, multispectral imaging device is imaging shooting material), specific implementation can be: initiatively excitation source, multispectral imaging device and sorting actuating unit are installed concentratedly outside the end of conveyer belt, wherein, optical spectrum imaging device and sorting actuating unit are arranged on the top of former flight parabolic path, initiatively excitation source is arranged on above or below former flight parabolic path, and initiatively excitation source and multispectral imaging device are arranged on before sorting actuating unit, former flight parabolic path refers to that tested material leaves checking matter material conveying device and freely falls formed track.So just can carry out imaging to the material in flight way, no longer include the signal of conveyer belt in camera lens, so inhibit ambient noise.The throughput direction of conveyer belt is defined as vertical direction by the application.
But sometimes due to the restriction of space and message processing time, active excitation source, it may be inconvenient that multispectral imaging device and sorting actuating unit are all arranged on a place, therefore, realize active excitation source to flying away from conveyer belt, and the tested material in flight way realizes illumination, specific implementation also can be: initiatively excitation source and multispectral imaging device are arranged between two conveyer belts with difference in height, wherein, optical spectrum imaging device is arranged on the top of former flight parabolic path, initiatively excitation source is arranged on above or below former flight parabolic path, sorting actuating unit is arranged on the end that the top of the former flight parabolic path between two conveyer belts with difference in height or sorting actuating unit are arranged on checking matter material conveying device, namely now, sorting screening device can with multispectral camera together, be arranged between two conveyer belts, also the end of whole material-transporting system can be arranged on, be installed separately with multispectral camera.When comprise in the mixed material be sorted of a great variety time, conveyer belt can be carried out multistage setting, form certain difference in height between adjacent two conveyer belts, material flies out from previous conveyer belt, before dropping to second conveyer belt, go into one section of flight parabolic path.Active excitation source and multispectral imaging device are arranged between two conveyer belts with difference in height, also can realize carrying out imaging to the material in flight way, no longer include the signal of conveyer belt in camera lens, so inhibit ambient noise.In order to improve the accuracy of sorting, preferably, the difference in height between above-mentioned two conveyer belts is 20 ~ 50 centimetres.
No matter between two conveyer belts, or the end of whole material-transporting system, material does not have conveyer belt to block in the way along work parabolic flight, therefore initiatively excitation source both can be arranged on the below of former flight parabolic path to the illumination of tested material enforcement transmission-type, and illumination is implemented to tested material in the top that also can be arranged on former flight parabolic path.Preferably, initiatively excitation source and multispectral imaging device are arranged on the top of this section of flight parabolic path, and the dust fallen can be avoided like this to fall on active excitation source and multispectral camera.
Angle between the working light path of above-mentioned active excitation source and the working light path of multispectral imaging device, preferably, is 30 ~ 60 degree, but is not limited thereto.The light from active excitation source can be avoided so directly to enter the camera lens of multispectral camera, thus improve the accuracy of sorting.
When active excitation source is to when flying away from conveyer belt and realize illumination at the material in way that flies, and when inciding tested material from the light of active excitation source with above-mentioned preferred angle (angle initiatively between the working light path of excitation source and the working light path of multispectral imaging device is 30 ~ 60 degree), if the light that initiatively excitation source irradiates can penetrate tested material, light then through tested material will have no the visual field of continuing to move ahead with stopping and leaving multispectral imaging device, namely any object will be no longer irradiated at this light in the field range of multispectral camera except tested material, thus ensure that picture signal that multispectral camera collects is completely from tested material, thus greatly inhibit ambient noise, also namely flying in way to material imaging, so in camera lens, do not have conveyer belt, only has tested material, so in the field range of multispectral camera, only has tested material.Because the front and back of tested material are without any object, without hiding without gear, light, except being irradiated to tested material, in the field range of multispectral camera, also just can not be irradiated to other object.Initiatively excitation source is to flying away from conveyer belt and realizing illumination at the tested material in way that flies, an extra benefit is also had to be, active excitation source can be arranged on the below of former flight parabolic path, enforcement transmission-type is thrown light on, but guarantee that the light from active excitation source directly can not enter the camera lens of multispectral camera, preferably, the angle between the working light path of active excitation source and the working light path of multispectral imaging device is 30 ~ 60 degree, but is not limited thereto.In the flight way of material, material is imaging shooting, the flexibility of reflective illumination and transmission-type illumination can be had simultaneously, in project implementation process, can use flexibly as required, greatly improve versatility of the present utility model.Relative to the configuration of Fig. 9, it is huge that the configuration of Figure 10 is particularly suitable for data acquisition amount, needs the longer time to carry out the occasion of data processing and data analysis.
The application, adopts initiatively excitation source, covers gamma-rays and the X-ray of extreme wavelength, also cover microwave band, be almost applicable to the sorting of all mixed materials; Only can carry out multispectral imaging at the special several characteristic wave bands be concerned about, and without the need to not adding the continuous print Hyper spectral Imaging of examination to service band scope, with low cost, usability is wide; Data processing amount is few, drastically increases recognition speed, improves the production efficiency of equipment.
The NM technology of the utility model is all with reference to prior art.
The screening installation of the utility model initiatively photic multispectral imaging of excitation formula utilizes tested material can reflect under the irradiation of light or external radiation or launch the spectrum with certain feature, multispectral imaging device is collected from the spectral signal of tested material and imaging signal, thus identify tested material or product, complete the sorting to tested material, there is dry method identification, dry separation, resolution ratio is high, sorting is accurate, sorting is efficient, sorting is without the feature of the three wastes etc., and applicability is wide, to various material, various state is (solid-state, liquid, gaseous state) mixed material can implement sorting.
Accompanying drawing explanation
Fig. 1 is the screening installation grading principle schematic diagram of the photic multispectral imaging of the utility model active excitation formula;
Fig. 2 is the light path design schematic diagram of the utility model multispectral imaging device;
Fig. 3 is the utilizing emitted light spectrogram of Halogen lamp LED illumination;
Fig. 4 is the parabolic path that sorted material is formed after flying away from conveyer belt;
Fig. 5 is the laser line schematic diagram for laser illuminator;
Fig. 6 is the sorting schematic diagram of sorting actuating unit;
Fig. 7 is bus-structured information connected mode;
The information connected mode of Fig. 8 star structure;
A kind of configuration mode of the screening installation of the photic multispectral imaging of Fig. 9 active excitation formula, is all arranged on active excitation source, multispectral camera, sorting actuating mechanism above the former flight parabolic path outside conveyer belt end.
The another kind of configuration mode of Figure 10 initiatively screening installation of the photic multispectral imaging of excitation formula, active excitation source, multispectral camera is arranged on two has the material between the conveyer belt of certain altitude difference to leap district.
In figure, 101. active rollers; 102. driven roller; 103. conveyer belt; 104. tested materials; The cog region of 105. multispectral imaging devices; 106. active excitation sources; 107. multispectral imaging device; The working light path of 108. active excitation sources; The working light path of 109. multispectral imaging devices; 202. light-dividing device; 203. from light-dividing device first via light path out; 204. from light-dividing device the second tunnel light path out; 205. from light-dividing device N-1 road light path out; 206. from light-dividing device N road light path out; 207. bandpass filter; 208. diaphragm; 209. narrow band pass filter; 210. focal plane arrays (FPA); 211. set of lenses; The emission spectrum of 301. Halogen lamp LEDs; The flight path of 401. sorted materials when 2 meter per second; The flight path of 402. sorted materials when 1.5 meter per second; The flight path of 403. sorted materials when 1 meter per second; 404. arrows are the installation site of nozzle; The output spectrum of 501. optical-fiber lasers; The frequency multiplication of 502. optical-fiber lasers exports; The frequency tripling of 503. optical-fiber lasers exports; The track (former flight parabolic path) that 601. sorted materials are formed after flying away from conveyer belt; 602. sorted materials; 603. high pressure tank; 604. high-speed electromagnetic valve; 605. nozzle; The flight path of 606. sorted materials under gases at high pressure effect (new flight path); 607. are separated dividing plate; 700. central processing computer; 701. first subsystems; 702. second subsystems; A 703. N-1 subsystem; 704. N number of subsystems; 705. signal bus.
Detailed description of the invention
In order to understand the utility model better, illustrate content of the present utility model further below in conjunction with embodiment, but content of the present utility model is not only confined to the following examples.
The screening installation of the photic multispectral imaging of the utility model active excitation formula, the difference of the physicochemical property according to sorted materials kind, can select to adopt various excitation source or excitation ray, thus various different physical characteristic is shown in tested material 104, show with light, heat or other physical form, and by multispectral imaging device 107 range gate capture.Fig. 2 illustrates a kind of design concept of multispectral imaging device 107, and in fact light-dividing device 202 wherein can have various different specific design structure, thus can develop many designs that different essence is identical seemingly.Set of lenses 211 also can by replacements such as speculum group or crystal gratings, particularly when using short UV light or X-ray, gamma-rays.For the Halogen lamp LED that excites also can by other as mercury lamp, xenon lamp replace; For the optical-fiber laser that excites also can by semiconductor laser, Solid State Laser, gas laser, even liquid laser replace.Also can blow from beneath for the nozzle of tested material 104 sorting in Fig. 6.Each function element and functional unit first subsystem 701, second subsystem 702, a N-1 subsystem 703, N number of subsystem 704 also can adopt different combinations from the connected mode of central processing computer 700, as being that bus structures connect, also can be that star structure connects.All these different selections above-mentioned are combined, and by producing the concrete apparatus-form being difficult to count, all belong to category of the present utility model.
Embodiment 1
The sorting of mixed plastic:
A screening installation for the photic multispectral imaging of active excitation formula, comprises frame, checking matter material conveying device, initiatively excitation source, multispectral imaging device, sorting actuating unit and central processing computer;
Checking matter material conveying device comprises variable-frequency motor, conveyer belt, initiatively roller and driven roller; Variable-frequency motor, initiatively roller and driven roller are installed in frame; The periphery that conveyer belt one end is socketed in the periphery of initiatively roller, the other end is socketed in driven roller; Variable-frequency motor electrically connects with active roller; The minimum point height overhead of checking matter material conveying device is 1.2 meters;
Multispectral imaging device is vertically arranged in the frame above conveyer belt;
Initiatively excitation source is arranged on above conveyer belt, in the frame of multispectral imaging device side, initiatively excitation source is Halogen lamp LED;
Sorting actuating unit comprises high pressure tank, high-speed electromagnetic valve and nozzle, and high pressure tank is arranged in the frame of conveyer belt end; High-speed electromagnetic valve has two or more and is all installed in the sidewall of high pressure tank; A nozzle is all equipped with in the outlet side of each high-speed electromagnetic valve; Nozzle spray air-flow the angle of divergence be 20 degree;
The all signal of telecommunication of screening installation all directly or by slave computer is connected with central processing computer indirectly, and connected mode be by adopting star structure connection;
Multispectral imaging device comprises light-dividing device; From the optical information of tested material, after entering light-dividing device, be equivalently divided into the equivalent light distance of more than two, on each equivalent light distance, all configured the image camera of an equivalent; Each image camera comprises from outside to inside successively: bandpass filter, set of lenses, narrow band pass filter and focal plane arrays (FPA), be provided with diaphragm between set of lenses;
Being installed as of active excitation source: make the tested material be mapped to from active excitation source along the illumination of its working light path outgoing the cog region of multispectral imaging device, and not directly enter into multispectral imaging device from the light that the tested material the cog region of multispectral imaging device is launched, for realizing aforementioned object, be designed specifically to: initiatively the working light path of excitation source and the working light path angle of multispectral imaging device are 40 degree;
Tested material being left checking matter material conveying device, freely to fall formed track definition be former flight parabolic path, by tested material by the high velocity air sprayed from nozzle blow off original parabolic path fall the track definition that formed be new flight path, between the drop point and the drop point of new flight path of former flight parabolic path, be provided with separation dividing plate;
As shown in Figure 9, initiatively excitation source is to flying away from conveyer belt and realizing illumination at the tested material in way that flies: initiatively excitation source, multispectral imaging device and sorting actuating unit are installed concentratedly outside the end of conveyer belt, above former flight parabolic path, and initiatively excitation source and multispectral imaging device are arranged on before sorting actuating unit, former flight parabolic path refers to that tested material leaves checking matter material conveying device and freely falls formed track;
During sorting, selected working of plastics on the conveyor belt, along with conveyer belt moves together, when moving to the working region 105 of multispectral imaging device, is subject to the illumination of the emission spectrum 301 from Halogen lamp LED of broad band forward.By the light that the selected working of plastics that Halogen lamp LED throws light on scatters out, captured imaging by multispectral imaging device 107.Such as in the multispectral imaging light path system shown in Fig. 2, with the form simplified most, only choose Article 1 light path 203 and Article 2 light path 204 forms double light path form, form two light spectrum image-forming pattern.Especially, when the centre wavelength of the narrow band pass filter in two light paths is individually designed into 1656 nanometers and 1724 nanometer, this light path can identify according to characteristic absorption peak the common plastics usually appeared in domestic waste, as PET, HDPE, LDPE, PVC, PP, PS, PC, POM, PMMA etc., especially the highest PET of added value can be identified.After identified PET is by the cog region 105 of multispectral imaging device, continue the end being forwarded to conveyer belt 103, conveyer belt 103 will be flown away from and fall along parabolic path (former flight parabolic path) 601, when identified PET flies over the nozzle 605 be arranged near parabolic path 601, high-speed electromagnetic valve 604 is opened according to the instruction from central processing computer 700, thus make identified PET depart from parabolic path 601, fall along from nozzle 605 high velocity air direction (new flight path) 606 out, realize the separation operation to PET.Particularly, for the PET identified and sorting is conventional, the numerical value obtained divided by the signal (optical filters of 1724 nanometers) from the second light path when the signal (optical filters of 1656 nanometers) carrying out the first light path is less than 0.8, then the plastics be detected are exactly PET; On the contrary, the numerical value obtained divided by the signal (optical filters of 1724 nanometers) from the second light path when the signal (optical filters of 1656 nanometers) from the first light path is greater than 0.8, then the plastics be detected are not just PET, just needs to reject.The sorting to PET can be realized accordingly.
The width of said conveyer belt can bring up to more than 5 meters, adds running up of upper conveyor belt itself, per hour can the waste or used plastics of sorting more than 10 tons, accuracy rate is 99.99%.
Embodiment 2
Sorting to peanut damaged in peanut:
A screening installation for the photic multispectral imaging of active excitation formula, comprises frame, checking matter material conveying device, initiatively excitation source, multispectral imaging device, sorting actuating unit and central processing computer;
Checking matter material conveying device comprises variable-frequency motor, conveyer belt, initiatively roller and driven roller; Variable-frequency motor, initiatively roller and driven roller are installed in frame; The periphery that conveyer belt one end is socketed in the periphery of initiatively roller, the other end is socketed in driven roller; Variable-frequency motor electrically connects with active roller; The minimum point height overhead of checking matter material conveying device is 1.8 meters;
Multispectral imaging device is vertically arranged in the frame above conveyer belt;
Initiatively excitation source is arranged on above conveyer belt, in the frame of multispectral imaging device side, initiatively excitation source is Halogen lamp LED;
Sorting actuating unit comprises high pressure tank, high-speed electromagnetic valve and nozzle, and high pressure tank is arranged in the frame of conveyer belt end; High-speed electromagnetic valve has two or more and is all installed in the sidewall of high pressure tank; A nozzle is all equipped with in the outlet side of each high-speed electromagnetic valve; Nozzle spray air-flow the angle of divergence be 40 degree;
The all signal of telecommunication of screening installation all directly or by slave computer is connected with central processing computer indirectly, and connected mode be by adopting bus structures connection;
Multispectral imaging device comprises light-dividing device; From the optical information of tested material, after entering light-dividing device, be equivalently divided into the equivalent light distance of more than two, on each equivalent light distance, all configured the image camera of an equivalent; Each image camera comprises from outside to inside successively: bandpass filter, set of lenses, narrow band pass filter and focal plane arrays (FPA), be provided with diaphragm between set of lenses;
Being installed as of active excitation source: make the tested material be mapped to from active excitation source along the illumination of its working light path outgoing the cog region of multispectral imaging device, and not directly enter into multispectral imaging device from the light that the tested material the cog region of multispectral imaging device is launched, for realizing aforementioned object, be designed specifically to: initiatively the working light path of excitation source and the working light path angle of multispectral imaging device are 40 degree.
Tested material being left checking matter material conveying device, freely to fall formed track definition be former flight parabolic path, by tested material by the high velocity air sprayed from nozzle blow off original parabolic path fall the track definition that formed be new flight path, between the drop point and the drop point of new flight path of former flight parabolic path, be provided with separation dividing plate.
As shown in Figure 10, initiatively excitation source flies away from conveyer belt and realizes illumination at the tested material in way that flies: initiatively excitation source and multispectral imaging device are arranged between two conveyer belts with difference in height, wherein, optical spectrum imaging device and initiatively excitation source are arranged on the top of former flight parabolic path, and sorting actuating unit is arranged on the end that the top of the former flight parabolic path between two conveyer belts with difference in height or sorting actuating unit are arranged on checking matter material conveying device.
During sorting, selected peanut is on conveyer belt 103, along with conveyer belt 103 moves forward together, when moving to the cog region 105 of multispectral imaging device, be subject to the illumination of the light beam from Halogen lamp LED of broad band, by the light that the selected peanut that Halogen lamp LED throws light on scatters out, captured imaging by multispectral imaging device 107.Such as in the multispectral imaging light path system shown in Fig. 2, with the form simplified most, only choose Article 1 light path 203, Article 2 light path 204 and Article 3 light path, form three light spectrum image-forming patterns of three light path forms.Especially, when the centre wavelength of the narrow band pass filter in three light paths is individually designed into red, green and blue, this multi-optical spectrum imaging system just can identify the damaged peanut occurred in peanut products according to aberration.The peanut that quality is intact, color and luster is red; Damaged peanut, excoriation, pulp exposes, and color and luster is white.Obvious color distortion realizes the basis to peanut quality sorting.After identified damaged peanut is by the cog region 105 of multispectral imaging device, continues the end being forwarded to conveyer belt 103, conveyer belt 103 will be flown away from and fall along parabolic path 601.When identified damaged peanut flies over the nozzle 605 be arranged near parabolic path 601, high-speed electromagnetic valve 604 is opened according to the instruction from central processing computer 700, thus make damaged peanut depart from parabola 601 track, fall along from nozzle 605 high velocity air direction 606 out, realize the separation operation to damaged peanut.
The width of said conveyer belt can bring up to more than 5 meters, adds running up of upper conveyor belt itself, per hour can the peanut of sorting more than 10 tons, accuracy rate is 99.99%.
Claims (10)
1. a screening installation for the photic multispectral imaging of active excitation formula, is characterized in that: comprise frame, checking matter material conveying device, initiatively excitation source, multispectral imaging device, sorting actuating unit and central processing computer;
Checking matter material conveying device comprises variable-frequency motor, conveyer belt, initiatively roller and driven roller; Variable-frequency motor, initiatively roller and driven roller are installed in frame; The periphery that conveyer belt one end is socketed in the periphery of initiatively roller, the other end is socketed in driven roller; Variable-frequency motor electrically connects with active roller;
Multispectral imaging device is vertically arranged in the frame above conveyer belt;
Initiatively excitation source be arranged on above conveyer belt, in the frame of multispectral imaging device one or both sides, to the tested material on conveyer belt or fly away from conveyer belt and tested material in flight way realizes illumination;
Sorting actuating unit comprises high pressure tank, high-speed electromagnetic valve and nozzle, and high pressure tank is arranged in the frame of conveyer belt end; High-speed electromagnetic valve has two or more and is all installed in the sidewall of high pressure tank; A nozzle is all equipped with in the outlet side of each high-speed electromagnetic valve;
Variable-frequency motor, multispectral imaging device, initiatively excitation source and high-speed electromagnetic valve all electrically connect with central processing computer.
2. the screening installation of the initiatively photic multispectral imaging of excitation formula as claimed in claim 1, is characterized in that: multispectral imaging device comprises light-dividing device; From the optical information of tested material, after entering light-dividing device, be equivalently divided into the equivalent light distance of more than two, on each equivalent light distance, all configured the image camera of an equivalent.
3. the screening installation of the initiatively photic multispectral imaging of excitation formula as claimed in claim 2, is characterized in that: each image camera comprises from outside to inside successively: bandpass filter, set of lenses, narrow band pass filter and focal plane arrays (FPA), be provided with diaphragm between set of lenses; The centre wavelength of narrow band pass filter is set in the characteristic absorption peak position of tested material material spectrum.
4. the screening installation of the initiatively photic multispectral imaging of excitation formula as claimed in claim 3, is characterized in that: substitute set of lenses by speculum group or crystal grating; From the optical information of tested material, after entering light-dividing device, equivalently be divided into two equivalent light distances, wherein, the centre wavelength of the narrow band pass filter that the centre wavelength of the narrow band pass filter on an equivalent light distance is selected on the wavelength location of 1656 nanometers, another equivalent light distance is selected at the wavelength location of 1724 nanometers.
5. the screening installation of the photic multispectral imaging of active excitation formula as described in claim 1-4 any one, it is characterized in that: being installed as of active excitation source: make the tested material be mapped to from active excitation source along the illumination of its working light path outgoing the cog region of multispectral imaging device, and not directly enter into multispectral imaging device from the light that the tested material the cog region of multispectral imaging device is launched.
6. the screening installation of the initiatively photic multispectral imaging of excitation formula as claimed in claim 5, is characterized in that: initiatively angle formed by the working light path of excitation source and the working light path of multispectral imaging device is 30 ~ 60 degree.
7. the screening installation of the initiatively photic multispectral imaging of excitation formula as claimed in claim 6, it is characterized in that: initiatively excitation source is to flying away from conveyer belt and realizing illumination at the tested material in way that flies: initiatively excitation source, multispectral imaging device and sorting actuating unit are installed concentratedly outside the end of conveyer belt, wherein, optical spectrum imaging device and sorting actuating unit are arranged on the top of former flight parabolic path, initiatively excitation source is arranged on above or below former flight parabolic path, and initiatively excitation source and multispectral imaging device are arranged on before sorting actuating unit, former flight parabolic path refers to that tested material leaves checking matter material conveying device and freely falls formed track,
Or: initiatively excitation source and multispectral imaging device are arranged between two conveyer belts with difference in height, wherein, optical spectrum imaging device is arranged on the top of former flight parabolic path, initiatively excitation source is arranged on above or below former flight parabolic path, and sorting actuating unit is arranged on the top of the former flight parabolic path between two conveyer belts with difference in height or is arranged on the end of checking matter material conveying device.
8. the screening installation of the initiatively photic multispectral imaging of excitation formula as claimed in claim 7, is characterized in that: the difference in height between two conveyer belts is 20 ~ 50 centimetres; Initiatively excitation source is arranged on the top of former flight parabolic path.
9. the screening installation of the photic multispectral imaging of active excitation formula as described in claim 1-4 any one, is characterized in that: initiatively excitation source is Halogen lamp LED, ultraviolet source, ray source, Terahertz light source, millimeter-wave radiation source, microwave source and LASER Light Source; Wherein, ultraviolet source is mercury lamp, xenon lamp; Ray source is X source, gamma ray projector or neutron irradiation source; LASER Light Source is X-ray LASER Light Source, VUV LASER light source, Ultra-Violet Laser light source, visible laser source, infrared laser source or mid-infrared laser source; The all signal of telecommunication of screening installation all directly or by slave computer is connected with central processing computer indirectly, and connected mode is for connecting by bus structures or adopting star structure to connect.
10. the screening installation of the photic multispectral imaging of active excitation formula as described in claim 1-4 any one, it is characterized in that: tested material being left checking matter material conveying device, freely to fall formed track definition be former flight parabolic path, by tested material by the high velocity air sprayed from nozzle blow off former flight parabolic path fall the track definition that formed be new flight path, between the drop point and the drop point of new flight path of former flight parabolic path, be provided with separation dividing plate; The minimum point height overhead of checking matter material conveying device is 1-2 rice; Nozzle spray air-flow the angle of divergence be 10 ~ 45 degree.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107760A (en) * | 2015-08-24 | 2015-12-02 | 南京爱丁堡环保科技有限公司 | Active excitation type photoinduced multispectral imaging sorting equipment |
| CN108321663A (en) * | 2018-02-11 | 2018-07-24 | 成都清大华科微晶材料有限责任公司 | A kind of continuous terahertz emission source of wideband and corresponding exciting method |
| US20230138374A1 (en) * | 2021-11-01 | 2023-05-04 | Tianjin University Of Commerce | Sorting-based garbage classification method and device |
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2015
- 2015-08-24 CN CN201520642669.0U patent/CN204866599U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107760A (en) * | 2015-08-24 | 2015-12-02 | 南京爱丁堡环保科技有限公司 | Active excitation type photoinduced multispectral imaging sorting equipment |
| CN105107760B (en) * | 2015-08-24 | 2018-02-16 | 爱丁堡（南京）光电设备有限公司 | A kind of screening installation of the photic multispectral imaging of active excitation formula |
| CN108321663A (en) * | 2018-02-11 | 2018-07-24 | 成都清大华科微晶材料有限责任公司 | A kind of continuous terahertz emission source of wideband and corresponding exciting method |
| US20230138374A1 (en) * | 2021-11-01 | 2023-05-04 | Tianjin University Of Commerce | Sorting-based garbage classification method and device |
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Address after: 211100 18 Chi Lan Road, Jiangning District, Nanjing, Jiangsu (Jiangning Science Park) Co-patentee after: NANJING WAVELENGTH OPTOELECTRONICS TECHNOLOGY CO., LTD. Patentee after: Edinburgh (Nanjing) Optoelectronic Equipment Co., Ltd. Address before: 211100 18 Chi Lan Road, Jiangning District, Nanjing, Jiangsu (Jiangning Science Park) Co-patentee before: NANJING WAVELENGTH OPTOELECTRONICS TECHNOLOGY CO., LTD. Patentee before: NANJING EDINGBURGH ENVIRONMENTAL TECHNOLOGY CO., LTD. |
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