CA2110733A1 - Method to identify objects and a device to implement such a method - Google Patents
Method to identify objects and a device to implement such a methodInfo
- Publication number
- CA2110733A1 CA2110733A1 CA002110733A CA2110733A CA2110733A1 CA 2110733 A1 CA2110733 A1 CA 2110733A1 CA 002110733 A CA002110733 A CA 002110733A CA 2110733 A CA2110733 A CA 2110733A CA 2110733 A1 CA2110733 A1 CA 2110733A1
- Authority
- CA
- Canada
- Prior art keywords
- filter
- objects
- signal processing
- cut
- waves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3416—Sorting according to other particular properties according to radiation transmissivity, e.g. for light, x-rays, particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
Abstract
Abstract The present invention relates to a method to identify objects by radiating them with electromagnetic waves in UV
to IR ranges, processing the waves incidenting from the object by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, whereby the waves incidenting from the object strike at least one chip equipped with photodiodes which feeds the taken photoexcitation to a spectral analysis, the gray light from the spectral analysis is fed eventually to a cut-off filter and/or a texture filter, whereby the spec-tral light and/or the object contour provided by the cut-off filter and/or the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after identi-fication of the object. The invention relates also to a device for implementing the method.
to IR ranges, processing the waves incidenting from the object by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, whereby the waves incidenting from the object strike at least one chip equipped with photodiodes which feeds the taken photoexcitation to a spectral analysis, the gray light from the spectral analysis is fed eventually to a cut-off filter and/or a texture filter, whereby the spec-tral light and/or the object contour provided by the cut-off filter and/or the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after identi-fication of the object. The invention relates also to a device for implementing the method.
Description
~'110733 RWE Entsorgung Aktiengesellschaft Essen, 7 December 1392 T-2 Dr.Hov/Ka EAG 36 A Method to identify Object~
and a Device to implement ~uch a Method Description of the Invention The present invention relates to a method to identify objects by radiating them with electromagnetic waves in W
to IR ranges, processing the waves incidenting from the object by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, whereby the waves incidenting from the object stri~e at least one chip equipped with photodiodes which feeds the taken photoexcitation to a spectral analysis and/or a cut-off filter and/or a texture filter, whereby the spectral light, the object contour provided by the cut-off filter and the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after identification of the object.
The invention rel~tes also to a device for implementing the method.
The identification of objects is of great importance in many fields. This applies primarily to a series of techni-2S cal fields. Thus, for instance, in automatic processing ofobjects it may be required to identify an object at first and then transfer it to a further processing stage. The exact identification of materials in sorting processes is of particular importance. Hereby, state of the art devices are used which registrate electromagnetic waves incidenting from an object, compare them with memorized data, and .
- - ,,, , , ' .. .. : " , . . , ~ - , ., . :
7~3 subsequently transmit signals which initiate e.g. a sorting means.
In applying these known methods images of concrete objects are generated by means of electromagnetic waves incidenting from the objects and compared with memorized images.
DE-OS 41 25 045 for instance discloses a method for sorting waste mixtures by radiating the waste objects with electro-magnetic and/or acoustic waves, receiving the waves inci-denting from the radiated waste objects in a signal proc-essing unit for identification of the waste objects, and transmitting signals from the signal processing unit to a sorting means which sorts the identified waste object out.
The signal processing unit detects features such as exter-nal object shapes, e.g. bottle, cup, collapsible tube, cubic and other shapes as well as logos, product names, corporate and manufacturer names respectively, trade marks and colours.
Correspondingly, the known methods require a possibly complete data base for object identification and taking certain measures, converting incidenting electromagnetic waves into defined images and comparing such images with comparison data possibly completely memorized in the data base. After the objects have been identified, a signal is triggered which for instance puts a sorting means into operatlon that sorts the identified object out.
The applicant has now succeeded in developing a substan-tially improved method for object identification without requiring a comparison with voluminous data memories by : :
ht1 0733 radiating the objects with electromagnetic waves in W to IR ranges, processing the waves incidenting from the objects by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, characterized in that the waves incidenting from the objects strike at least one chip equipped with photodiodes which feeds the taken photoexcitation to a spectral analy-sis, in that the gray light from the spectral analysis is eventually fed to a cut-off filter and/or a texture filter, in that the spectral light and/or the object contour pro-vided by the cut-off filter and/or the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after object identification.
The method according to the invention is excellently suited to identify objects from an object mixture, the identifica-tion being supported by the fact that the objects are at first separated from the object mixture. A very important sequence step is the initiation of ~ sorting means which sorts the identified object out.
The object identification takes place in such a way that the objects are at first radiated with électromagnetic waves in ultraviolet range, within the range of visible light or in infrared range. The waves incidenting from the object, e.g. by object reflection or after penetrating or partially penetrating the object and reradiation of elec-tromagnetic waves respectively, strike at least one chipequipped with photodiodes. However, a plurality of chips may be provided according to the invention. The photoexci-- ~ . - . ~
i~llO733 tation transmitted from the chip is fed to a spectral analysis unit, whereby the gray light is supplied to a cut-off filter or a texture filter. The spectral analysis is hereby preferably carried out electronically. The features thus obtained, preferably any, but also individually, or the combination of two features, namely spectral light, object contour provided by the cut-off filter and surface structure of the object provided by the texture filter, can now be compared with corresponding data memorized in a data memory. After identification of the object, the electronic signal processing can transmit at least one specific signal in order to initiate certain sequence steps, the sorting out of an identified object being a particularly important sequence step.
As a matter of principle, further method and device fea-tures such as phase shifting and other features suitable for object identification may be used in addition to the mentioned features.
~ -The method according to the invention and the device according to the invention are of special importance in .
identifying objects from waste mixtures and sorting out such objects. It is well k wn that sorting out pure grades of plastics from plastic waste mixtures is of speciàl importance in view of recycling synthetic materials.
:- ~ - - .
~ , The sorting out operation according to the state of the art may be differently performed, e.g. pneumatically, hydrauli-cally, mechanically or otherwise. Object identification and sorting out are particularly improved by separating the ~ objects from an object mixture and waste mixture respec-j ~:
1 ~ ' - , :
~ . ~! ' ` . . '. '~, tively, for instance on a conveyor belt, before applying the method according to the invention.
The work according to the invention is preferably executed with visible light, however, W and IR light according to - the invention may be also used with excellent results.
The method according to the invention permits to reliably identify plastics on the basis of the features according to the invention, and this without generation of object images and memorization of which in a data base. Thus, grade-pure plastics can be recovered and supplied to a correspondingly high-quality reutilization.
The present invention relates to a device to identify objects which comprises a radiation source for electromag-netic waves from W to IR ranges and an electronic signal processing unit, characterized by at least one chip equipped with photodiodes for receiving electromagnetic waves incidenting from a radiated object, a means for spectral light analysis and/or a cut-off filter and/or a - texture filter for receiving and processing the photoexci-tation supplied by the chip as well as a signal processing system with data memory, in which the spectral light and/or the object contour provided by the cut-off filter and/or the surface structure provided by the texture filter are compared with memorized data, whereby the signal processing system is capable to initiate certain sequence steps defined by at~least one signal after object identification.
Sorting out the identified objects is the preferred sequence step.
.
., . , -, . - . . ~. .. ..
~1~ 0733 As already mentioned above, it is preferred to connect a separating means for separating objects from an object mixture in series with the device.
The invention relates further to the application and use of the method and device for identification, and identifica-tion and sorting out of objects, respectively.
~:
.' ` ! ' ' `.,. ~ ' . , `
~ ! ' ' . .' ' .
and a Device to implement ~uch a Method Description of the Invention The present invention relates to a method to identify objects by radiating them with electromagnetic waves in W
to IR ranges, processing the waves incidenting from the object by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, whereby the waves incidenting from the object stri~e at least one chip equipped with photodiodes which feeds the taken photoexcitation to a spectral analysis and/or a cut-off filter and/or a texture filter, whereby the spectral light, the object contour provided by the cut-off filter and the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after identification of the object.
The invention rel~tes also to a device for implementing the method.
The identification of objects is of great importance in many fields. This applies primarily to a series of techni-2S cal fields. Thus, for instance, in automatic processing ofobjects it may be required to identify an object at first and then transfer it to a further processing stage. The exact identification of materials in sorting processes is of particular importance. Hereby, state of the art devices are used which registrate electromagnetic waves incidenting from an object, compare them with memorized data, and .
- - ,,, , , ' .. .. : " , . . , ~ - , ., . :
7~3 subsequently transmit signals which initiate e.g. a sorting means.
In applying these known methods images of concrete objects are generated by means of electromagnetic waves incidenting from the objects and compared with memorized images.
DE-OS 41 25 045 for instance discloses a method for sorting waste mixtures by radiating the waste objects with electro-magnetic and/or acoustic waves, receiving the waves inci-denting from the radiated waste objects in a signal proc-essing unit for identification of the waste objects, and transmitting signals from the signal processing unit to a sorting means which sorts the identified waste object out.
The signal processing unit detects features such as exter-nal object shapes, e.g. bottle, cup, collapsible tube, cubic and other shapes as well as logos, product names, corporate and manufacturer names respectively, trade marks and colours.
Correspondingly, the known methods require a possibly complete data base for object identification and taking certain measures, converting incidenting electromagnetic waves into defined images and comparing such images with comparison data possibly completely memorized in the data base. After the objects have been identified, a signal is triggered which for instance puts a sorting means into operatlon that sorts the identified object out.
The applicant has now succeeded in developing a substan-tially improved method for object identification without requiring a comparison with voluminous data memories by : :
ht1 0733 radiating the objects with electromagnetic waves in W to IR ranges, processing the waves incidenting from the objects by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, characterized in that the waves incidenting from the objects strike at least one chip equipped with photodiodes which feeds the taken photoexcitation to a spectral analy-sis, in that the gray light from the spectral analysis is eventually fed to a cut-off filter and/or a texture filter, in that the spectral light and/or the object contour pro-vided by the cut-off filter and/or the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after object identification.
The method according to the invention is excellently suited to identify objects from an object mixture, the identifica-tion being supported by the fact that the objects are at first separated from the object mixture. A very important sequence step is the initiation of ~ sorting means which sorts the identified object out.
The object identification takes place in such a way that the objects are at first radiated with électromagnetic waves in ultraviolet range, within the range of visible light or in infrared range. The waves incidenting from the object, e.g. by object reflection or after penetrating or partially penetrating the object and reradiation of elec-tromagnetic waves respectively, strike at least one chipequipped with photodiodes. However, a plurality of chips may be provided according to the invention. The photoexci-- ~ . - . ~
i~llO733 tation transmitted from the chip is fed to a spectral analysis unit, whereby the gray light is supplied to a cut-off filter or a texture filter. The spectral analysis is hereby preferably carried out electronically. The features thus obtained, preferably any, but also individually, or the combination of two features, namely spectral light, object contour provided by the cut-off filter and surface structure of the object provided by the texture filter, can now be compared with corresponding data memorized in a data memory. After identification of the object, the electronic signal processing can transmit at least one specific signal in order to initiate certain sequence steps, the sorting out of an identified object being a particularly important sequence step.
As a matter of principle, further method and device fea-tures such as phase shifting and other features suitable for object identification may be used in addition to the mentioned features.
~ -The method according to the invention and the device according to the invention are of special importance in .
identifying objects from waste mixtures and sorting out such objects. It is well k wn that sorting out pure grades of plastics from plastic waste mixtures is of speciàl importance in view of recycling synthetic materials.
:- ~ - - .
~ , The sorting out operation according to the state of the art may be differently performed, e.g. pneumatically, hydrauli-cally, mechanically or otherwise. Object identification and sorting out are particularly improved by separating the ~ objects from an object mixture and waste mixture respec-j ~:
1 ~ ' - , :
~ . ~! ' ` . . '. '~, tively, for instance on a conveyor belt, before applying the method according to the invention.
The work according to the invention is preferably executed with visible light, however, W and IR light according to - the invention may be also used with excellent results.
The method according to the invention permits to reliably identify plastics on the basis of the features according to the invention, and this without generation of object images and memorization of which in a data base. Thus, grade-pure plastics can be recovered and supplied to a correspondingly high-quality reutilization.
The present invention relates to a device to identify objects which comprises a radiation source for electromag-netic waves from W to IR ranges and an electronic signal processing unit, characterized by at least one chip equipped with photodiodes for receiving electromagnetic waves incidenting from a radiated object, a means for spectral light analysis and/or a cut-off filter and/or a - texture filter for receiving and processing the photoexci-tation supplied by the chip as well as a signal processing system with data memory, in which the spectral light and/or the object contour provided by the cut-off filter and/or the surface structure provided by the texture filter are compared with memorized data, whereby the signal processing system is capable to initiate certain sequence steps defined by at~least one signal after object identification.
Sorting out the identified objects is the preferred sequence step.
.
., . , -, . - . . ~. .. ..
~1~ 0733 As already mentioned above, it is preferred to connect a separating means for separating objects from an object mixture in series with the device.
The invention relates further to the application and use of the method and device for identification, and identifica-tion and sorting out of objects, respectively.
~:
.' ` ! ' ' `.,. ~ ' . , `
~ ! ' ' . .' ' .
Claims (12)
1. A method to identify objects by radiating them with electromagnetic waves in UV to IR ranges, processing the waves incidenting from the object by means of an electronic signal processing unit and output of signals from the electronic signal processing unit, charac-terized in that the waves incidenting from the object strike at least one chip equipped with photo-diodes which feeds the taken photoexcitation to a spec-tral analysis, in that the gray light from the spectral analysis is eventually fed to a cut-off filter and/or a texture filter, in that the spectral light and/or the object contour provided by the cut-off filter and/or the surface structure of the object provided by the texture filter are compared with data memorized in a data memory, and certain sequence steps defined by at least one signal are initiated after identification of the object.
2. A method according to claim 1, characterized in that the objects are identified from am waste mixture.
3. A method according to at least one of claims 1 and 2, characterized in that a sorting means is initi-ated as sequence step which sorts the identified object out.
4. A method according to at least one of claims 1 to 3, characterized in that the work is performed with visible light.
5. A method according to at least one of claims 1 to 4, characterized in that the objects present in the object mixture are separated.
6. A device to identify objects according to at least one of claims 1 to 5 which comprises a radiation source for electromagnetic waves from UV to IR ranges and an elec-tronic signal processing unit, characterized by at least one chip equipped with photodiodes to receive electromagnetic waves incidenting from a radiated object, a means for spectral light analysis and/or a cut-off filter and/or a texture filter to receive and process the photoexcitation transmitted from the chip, and a signal processing system with data memory, in which the spectral light and/or the object contour pro-vided by the cut-off filter and/or the surface struc-ture provided by the texture filters are compared with memorized data, whereby the signal processing system is capable to initiate certain sequence steps defined by at least one signal.
7. A device according to claim 6, characterized in that the sequence step is a sorting means.
8. A device according to at least one of claims 6 and 7, characterized in that a separating means to sepa-rate objects from the object mixture is connected in series with the device.
9. Application of the method to identify objects according to at least one of claims 1 to 5.
10. Application of the method to identify and sort out objects according to at least one of claims 1 to 5.
11. Utilization of the device to identify objects according to at least one of claims 6 to 8.
12. Utilization of the device to identify and sort out objects according to at least one of claims 6 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4241250.1 | 1992-12-08 | ||
| DE4241250A DE4241250C2 (en) | 1992-12-08 | 1992-12-08 | Method for identifying objects and device for carrying out the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2110733A1 true CA2110733A1 (en) | 1994-06-09 |
Family
ID=6474658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002110733A Abandoned CA2110733A1 (en) | 1992-12-08 | 1993-12-06 | Method to identify objects and a device to implement such a method |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0601422B1 (en) |
| JP (1) | JPH06323831A (en) |
| KR (1) | KR940015550A (en) |
| CN (1) | CN1093619A (en) |
| AT (1) | ATE150988T1 (en) |
| CA (1) | CA2110733A1 (en) |
| DE (2) | DE4241250C2 (en) |
| DK (1) | DK0601422T3 (en) |
| MX (1) | MX9307758A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449655B2 (en) | 2003-09-20 | 2008-11-11 | Qinetiq Limited | Apparatus for, and method of, classifying objects in a waste stream |
| US9173508B2 (en) | 2010-07-08 | 2015-11-03 | Itab Scanflow Ab | Checkout counter |
| CN110883984A (en) * | 2019-11-06 | 2020-03-17 | 张跃 | Plastic bottle classification recycling device based on light element composition principle |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4414112A1 (en) * | 1994-04-22 | 1995-10-26 | Johannes Bauer Maschinen Und A | Automated waste material separation method for packaging material recycling |
| DE19745728A1 (en) * | 1997-10-16 | 1999-04-22 | Bayerische Motoren Werke Ag | Process for the optical inspection of a mechanical fastener |
| JP3908879B2 (en) * | 1999-10-04 | 2007-04-25 | Ｉｄｅｃ株式会社 | Plastic discrimination device and discrimination method |
| DE10156157A1 (en) * | 2001-11-15 | 2003-05-28 | Bsh Bosch Siemens Hausgeraete | Method and device for identifying an object |
| DE102005022880B4 (en) * | 2005-05-18 | 2010-12-30 | Olympus Soft Imaging Solutions Gmbh | Separation of spectrally or color superimposed image contributions in a multi-color image, especially in transmission microscopic multi-color images |
| CN102976004B (en) * | 2012-11-12 | 2016-01-06 | 李敏 | A kind of multi-functional environment-protection electronic machine intelligence reclaims recognition system |
| CN104568749B (en) * | 2013-10-25 | 2017-12-19 | 中国移动通信集团公司 | A kind of article surface Material Identification method, apparatus and identification equipment and system |
| CN106733689A (en) * | 2017-03-15 | 2017-05-31 | 安徽理工大学 | A kind of four eyed button substandard products screening system |
| CN110743813A (en) * | 2019-10-23 | 2020-02-04 | Tcl王牌电器(惠州)有限公司 | Chip sorting machine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747755A (en) * | 1971-12-27 | 1973-07-24 | Massachusetts Inst Technology | Apparatus for determining diffuse and specular reflections of infrared radiation from a sample to classify that sample |
| US4220972A (en) * | 1979-05-22 | 1980-09-02 | Honeywell Inc. | Low contrast object extraction device |
| US4394683A (en) * | 1980-06-26 | 1983-07-19 | Diffracto Ltd. | New photodetector array based optical measurement systems |
| DE3232179C1 (en) * | 1982-08-30 | 1987-03-26 | Pietzsch, Ludwig, Dr.-Ing., 7500 Karlsruhe | Device for optically recognizing surface patterns on objects |
| IT1172646B (en) * | 1983-09-21 | 1987-06-18 | M S Sistemi Automatici Srl | APPARATUS TO DETECT THE COLORING OF FLAT BODIES IN MOVEMENT AND SUITABLE FOR PROCESSING ELECTRIC SIGNALS THAT VARY ACCORDING TO THE COLOR QUALITY OF THE SAID BODIES APPARATUS PARTICULARLY SUITABLE FOR AUTOMATING THE CHOICE OF CERAMIC TILES AT THE PRODUCTION |
| US4624367A (en) * | 1984-04-20 | 1986-11-25 | Shafer John L | Method and apparatus for determining conformity of a predetermined shape related characteristics of an object or stream of objects by shape analysis |
| US4687107A (en) * | 1985-05-02 | 1987-08-18 | Pennwalt Corporation | Apparatus for sizing and sorting articles |
| DE3520486A1 (en) * | 1985-06-07 | 1986-12-11 | Josef 7084 Westhausen Thor | Process and device for separating plastics wastes from refuse, in particular domestic refuse |
| GB9014122D0 (en) * | 1990-06-25 | 1990-08-15 | Gersan Ets | Shape sorting |
| SE464105B (en) * | 1990-03-01 | 1991-03-04 | Rema Control Ab | SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT |
| DE4102767A1 (en) * | 1991-01-31 | 1992-08-06 | Metallgesellschaft Ag | METHOD FOR QUALITATIVE ANALYSIS OF PLASTIC PARTICLES |
| DE4125045A1 (en) * | 1991-07-29 | 1993-02-04 | Rwe Entsorgung Ag | METHOD FOR SORTING WASTE MIXTURES |
-
1992
- 1992-12-08 DE DE4241250A patent/DE4241250C2/en not_active Expired - Fee Related
-
1993
- 1993-11-27 DK DK93119141.5T patent/DK0601422T3/en active
- 1993-11-27 EP EP93119141A patent/EP0601422B1/en not_active Expired - Lifetime
- 1993-11-27 AT AT93119141T patent/ATE150988T1/en not_active IP Right Cessation
- 1993-11-27 DE DE59306025T patent/DE59306025D1/en not_active Expired - Fee Related
- 1993-12-06 CA CA002110733A patent/CA2110733A1/en not_active Abandoned
- 1993-12-07 JP JP5306867A patent/JPH06323831A/en active Pending
- 1993-12-08 KR KR1019930026811A patent/KR940015550A/en not_active Application Discontinuation
- 1993-12-08 CN CN93120786A patent/CN1093619A/en active Pending
- 1993-12-08 MX MX9307758A patent/MX9307758A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449655B2 (en) | 2003-09-20 | 2008-11-11 | Qinetiq Limited | Apparatus for, and method of, classifying objects in a waste stream |
| US9173508B2 (en) | 2010-07-08 | 2015-11-03 | Itab Scanflow Ab | Checkout counter |
| US9301626B2 (en) | 2010-07-08 | 2016-04-05 | Itab Scanflow Ab | Checkout counter |
| CN110883984A (en) * | 2019-11-06 | 2020-03-17 | 张跃 | Plastic bottle classification recycling device based on light element composition principle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1093619A (en) | 1994-10-19 |
| DK0601422T3 (en) | 1997-10-06 |
| EP0601422A2 (en) | 1994-06-15 |
| EP0601422A3 (en) | 1994-12-28 |
| JPH06323831A (en) | 1994-11-25 |
| DE4241250A1 (en) | 1994-06-09 |
| KR940015550A (en) | 1994-07-21 |
| MX9307758A (en) | 1994-06-30 |
| DE59306025D1 (en) | 1997-05-07 |
| ATE150988T1 (en) | 1997-04-15 |
| DE4241250C2 (en) | 1996-04-11 |
| EP0601422B1 (en) | 1997-04-02 |
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