EP0342354A2 - Vorrichtung zur Sortierung nach Farbe - Google Patents

Vorrichtung zur Sortierung nach Farbe Download PDF

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Publication number
EP0342354A2
EP0342354A2 EP89106349A EP89106349A EP0342354A2 EP 0342354 A2 EP0342354 A2 EP 0342354A2 EP 89106349 A EP89106349 A EP 89106349A EP 89106349 A EP89106349 A EP 89106349A EP 0342354 A2 EP0342354 A2 EP 0342354A2
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EP
European Patent Office
Prior art keywords
matrix
sorting
objects
color
electrical signals
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.)
Withdrawn
Application number
EP89106349A
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English (en)
French (fr)
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EP0342354A3 (de
Inventor
Sergio Buarque Quintaes
Philippe Kayser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tecnostral Sa Industria E Tecnologia
Original Assignee
Tecnostral Sa Industria E Tecnologia
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from BR8801824A external-priority patent/BR8801824A/pt
Priority claimed from BR8801825A external-priority patent/BR8801825A/pt
Priority claimed from BR8801851A external-priority patent/BR8801851A/pt
Application filed by Tecnostral Sa Industria E Tecnologia filed Critical Tecnostral Sa Industria E Tecnologia
Publication of EP0342354A2 publication Critical patent/EP0342354A2/de
Publication of EP0342354A3 publication Critical patent/EP0342354A3/de
Withdrawn legal-status Critical Current

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    • 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
    • B07C5/3425—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain
    • 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
    • B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras

Definitions

  • This invention pertains to apparatuses for sorting objects, more particularly, an apparatus for sorting objects by color.
  • This includes a means of conveying the objects, uniformly and individually, to the interior of an illuminated analysis chamber connected to electronic photodetectors and circuitry that can transform light reflected, transmitted or emitted by the objects into electrical signals.
  • apparatuses that use a matrix sorting process to read the color of the objects by comparing these electrical signals to a sorting matrix, one that can be selected, modified or created by the operator by utilizing a matrix sorting apparatus, or it can be automatically generated by this apparatus based on a sampling of electrical signals resulting from passing a group of objects with specific color characteristics through the analysis chamber.
  • said standard can be created by the operator through the preparation of a masking sheet, usually made of cardboard, placed over the face of a cathode ray tube.
  • a masking sheet usually made of cardboard
  • This is the process employed in model B-450 bichromatic sorting apparatuses, manufactured by Mandrel Industries Inc. (Houston, Texas).
  • these apparatuses Prior to 1968, these apparatuses used a masking sheet over the face of a cathode ray tube (CRT) to distinguish between groups of acceptable and nonacceptable objects, using two electrical signals corresponding to two lengths of a light wave reflected by the object being examined.
  • CRT cathode ray tube
  • the sorting apparatus can have multiple channels that may or may not share a single analysis chamber.
  • Color analysis of the object can be monochromatic, bichromatic or polychromatic, depending on the breakdown of the color spectrum for the light utilized in defining the color in order to obtain electrical signals.
  • the sorting apparatus utilizes a MATRIX SORTING PROCESS that analyzes the color of the object by comparing electrical signals with the contents of a sorting matrix linked to the colors of the objects to be analyzed.
  • the sorting apparatus utilizes a MATRIX SORTING APPARATUS that permits the creation, editing, modification and visualization of sorting matrixes, as well as the visualization, freezing and memorizing of electrical signals.
  • the sorting apparatus contains an AUTOMATIC MATRIX APPARATUS capable of generating a sorting matrix from the electrical signals prroduced by the analysis of a group of objects with specific color characteristics, in addition to other innovations referred to below.
  • one of the principles of the sorting process is to create a digital sorting matrix in two or more dimensions, depending on whether grain color is analyzed bichromatically or polychromatically.
  • This sorting matrix contains geometric acceptance and rejection areas that are no longer bounded merely by straight lines; instead, these areas can assume any shape, being defined by points whose contents are "0" or "1", which define points that are characteristic of "0" or "1" type colors.
  • the MATRIX SORTING PROCESS for the sorting apparatus utilizes digitized electrical signals grouped in the form of variables that define characteristic points of the color of the area of the object analyzed and compares these points to those in each geometric place contained in the sorting matrix.
  • Each characteristic point of the color can be formed by one, two, three or more electrical signals depending only on the number of signals into which light data from the object has been changed by the photocells in the analysis chamber and the electronic circuitry linked to the sorting equipment.
  • process applications are not limited to monochromatic or bichromatic sorters but rather can be applied to any apparatus for sorting objects by color utilizing any number of signals for determining the color of the objects examined.
  • the sorting matrix utilized in the object-sorting process may contain as many geometric places as the process requires, since each place contains the characteristic points of the color of a specific group of objects.
  • Each sorting matrix point can be defined by as many coordinates as there are electrical signals defining the color of the object.
  • the geometric place for the characteristic points of the color for a specific group of objects may assume any shape, meaning that it can assume shapes different from those utilized in sorters with prior technology.
  • sorting matrixes can be supplied with the sorting apparatus so that the operator may chose the one most suitable. Or they may be created by the operator and memorized by electronic apparatuses in the sorter, or they may be generated by copying and editing that utilizes the matrixes memorized by the sorting apparatus.
  • sorting matrixes can also be generated by apparatuses within the sorter through sampling of the electrical signals obtained when a group of objects with specific color characteristics is passed through the analysis chamber. Such signals are related to the light reflected, emitted or transmitted by the group of objects. Furthermore, the matrix generated by this process can also be copied and modified by the operator so as to optimize the sorting process.
  • a basic characteristic of the sorting process is that the operator may easily and intuitively choose, create, edit, modify and memorize the sorting matrix by means of elelctronic apparatuses.
  • the sorting process is particularly applicable to bichromatic grain sorting that makes use of light reflected by the grain, broken down into two bands in the color spectrum, with two signals corresponding to these bands obtained by means of electronic photodetectors and amplifiers. Owing to their source, these signals distinguish the color of the grain.
  • these signals are arranged in the shape of two variables, X and Y, which are compared to a sorting matrix represented in the cartesian plane by the H (horizontal) and V (vertical) axes. This matrix contains the parameters needed to define the geometric place or places for the grain groups to be sorted, while the result of the comparison will determine the color group to which the grain belongs. The grain will consequently be accepted or rejected in the sorting process, depending on the programming previously established.
  • the invention is based on the grain sorting process by means of a bichromatic channel, although it is applicable to any number of monochromatic, bichromatic or polychromatic channels for analyzing any type of object.
  • the electronic signals that distinguish grain color bichromatically will henceforth be labeled "X” and "Y", which may correspond to the RED and CYAN content of the light reflected by the grain or to any other pair of bands in the color spectrum that conforms to the bichromatic analysis process.
  • Figure A below is a cartesian representation in the H-V plane of a bichromatic sorting matrix that contains 64 points in each of its quadrants and 32 points on the H and V axes, besides its origin.
  • the number of points contained in the matrix can be more or less than that chosen for the case and will basically depend on the resolution desired for defining the matrix.
  • points are identified by "0" and "1", which can be linked to the geometric place for points with color characteristic "0" and the place for points with color characteristic "1".
  • the sorting matriz can be stored in a digital working memory where addresses are established depending on the quadrant region and a point coordinate; each bit in the address contents corresponds to the color-data contents of a point.
  • the contents of an eight-­point line can therefore be stored in each address and the contents of a quadrant can be stored in each eight addresses.
  • the contents of a 256-point matrix can be stored in the quadrants, plus 32 points on the axes. It should be noted that this is not the only way to store the contents of a sorting matrix digitally, though it undoubtedly is an economical way to do so and is one of the objectives of this invention. Besides this economical aspect, the structure proposed for storing the matrix contents allows for an easy and quick comparison to color data contained in the electrical signals.
  • the process for comparing the color content of electrical signals to the matrix contents is based on the following:
  • electrical signals representing grain color have been digitized in a nonconventional though rather simplified way, because the method utilized is based on the recognition of the cartesian plane region in which the point defined by the X and Y variable is found, as well as on the digitizing of the X and Y amplitude module by means of levels reached by the signals.
  • the levels utilized in the examples are based on a maximum amplitude of eight volts, with one volt between levels. The value of the maximum level can actually be any one, provided that it is adapted to the signal amplitude; moreover, spacing need not be equal between levels. For practical purposes, these levels can be adjustable for allowing continuous control of color recognition related to the electrical signals.
  • This continuous control may consist of a sensitivity adjustment that serves to increase or decrease the value at electrical signal levels.
  • a sensitivity adjustment that serves to increase or decrease the value at electrical signal levels.
  • a 4.5-volt signal would give a digitized value of 00001111 (4 levels); however, by boosting sensitivity it could be 00011111 (5 levels), and 00000111 (3 levels) if sensitivity is lowered.
  • the same effect can be obtained with a potentiometer connected to the amplifier, which would make it possible to increase the signal from 4.5 to 5.0 volts, or attenuate it to 3.8 volts.
  • any process capable of increasing or reducing transformation at electrical signal levels can be utilized as a signal sensitivity adjustment.
  • the each electrical signal can be identified as to whether it corresponds to a group of objects with color "0" o with color "1".
  • the objects can be sorted by means of rejecting those that produce color signal "0" or "1".
  • the sorting matrix can be created or changed by filling in the address contents, structured in keeping with this invention and utilizing any type of data-entry element. It can be memorized in any appropriate apparatus.
  • Memorization apparatuses can store differing matrixes that have been selected for specific duties. Their structures are similar, with it only being necessary to correct the address when digitized signals are compared to the contents of the sorting matrix, or else copy the desired matrix into the working memory. In the latter case, working memory will always have the same address, with only the contents of these addresses varying in accordance with the memory to be utilized.
  • the MATRIX APPARATUS used by the sorting apparatus consists of a DISPLAY ELEMENT capable of visualizing the contents of the sorting matrix and digitized electrical signals, a CONTROL ELEMENT capable of controlling changes in the contents of each matrix point, and a COUPLING ELEMENT that links the display and control elements to the sorting apparatus circuitry.
  • a feature of this apparatus is that it allows the operator to visualize, select, create, edit and modify the sorting matrix easily and intuitively.
  • the apparatus is particularly applicable to bichromatic grain sorting that utilizes the light reflected by the grain, broken down into two color spectrum bands.
  • This method uses electronic photodetectors and amplifiers to obtain signals that correspond to these bands, signals that distinguish grain color based on where they are generated.
  • the signals are grouped into two variables, X and Y, which are compared to a sorting matrix represented in the cartesian plane by H (horizontal) and V (vertical) axes.
  • This matrix contains the parameters needed to define the geometrical place or places for the grain groups to be sorted, and the result of the comparison will define the color group to which the grain belongs. Consequently, the grain may be accepted or rejected in accordance with programming previously established by using the sorting matrix.
  • the DISPLAY ELEMENT must be capable of visually displaying the sorting matrix, meaning that it can show the operator a form similar to the following:
  • the display element may be a cathode ray tube, a liquid crystal display, a group of bulbs or any other device capable of showing the sorting matrix visually.
  • this element can be a group of LEDs arranged in the following way, in which "0" can be represented by an unlit LED and "1" by a lit one, thereby visually representing the sorting matrix.
  • the display element may also be utilized for displaying electrical signals X and Y while grains are being examined, since digitized signals have a coding similar to that of the matrix.
  • X and Y signals for each grain can be frozen and shown on the display, cumulatively or not, so as to locate the geometric place for a specific grain group.
  • the CONTROL ELEMENT may be a keyboard with a sufficient number of keys and contacts for identifying each matrix point or line so that by operating the contacts it will be possible to give a command to shift from state "0" to state "1" and viceversa.
  • One of these control forms could be a set of contacts with the shape of Fig. B and containing LEDs inside so that it would serve as both a display and control element.
  • Another type of control element would be to use an optic fiber cable connected to a photodetector and a detection/simple-logic circuit. By placing one end of the cable on the LED whose state one wishes to change, a photodetector at the other end would recognize condition "0" or "1". This would produce the change in the definitive state by using a scanner system so as to confirm, LED by LED, which of them is transmitting the change-of-state condition to the photodetector through the optic fiber cable.
  • the two latter forms are characteristic elements of this invention.
  • the COUPLING ELEMENT links the display and circuit-­control elements associated with the memorization of the digital matrix so as to transmit matrix content data to the display element, receiving data from these elements regarding changes introduced in order to memorize the new matrix.
  • This element functions as a data input-output apparatus within a routine to be explained below.
  • the coupling element can also be used for transmitting electrical signals X and Y to the display element while grains are being examined, since the digitized signals have a coding similar to that of the matrix.
  • the X and Y signals for each grain can be memorized and displayed so as to locate the geometric place for a specific grain group.
  • LEDs with "0” should be considered as unlit and those with “1” as lit.
  • all such data should consider LEDs as horizontal, except for LEDs for the Y semi-axes, which should be considered as vertical.
  • the apparatus as described herein operates as an intelligent data input-output device, thereby fulfilling its objectives to create, display, edit and modify sorting matrixes.
  • the purpose of the AUTOMATIC MATRIX APPARATUS is to automatically generate sorting matrixes based on electrical signals produced by the passage of a group of objects with specific color characteristics. So that the automatic matrix apparatus will operate correctly, it is necessary to execute a microprocessor control program based on the following principles.
  • the automatic sorting matrix can be automatically created by passing a series of objects pertaining to a specific color group through the analysis chamber. These objects must all be considered as acceptable within the standard sorting process. As the objects go through electrical signals representing the color of the objects are produced, which must undergo digitizing as described in this invention.
  • the program for automatic matrix creation will examine the temporary matrix on the basis of a cartesian plane, so as to define the boundaries of the geometric place for points with color characteristic "1". It will next proceed to inspect the temporary matrix, assigning a "1" to all points inside the boundary and a "0" to those outside. This is necessary because a quantity of objects is not an infinite number and therefore some points with a "0" content may accidentally exists inside the geometric place for points with "1".
  • the same program can generate and memorize an inverse matrix, changing the "1" contents for "0" and viceversa, so as to create a working matrix ready for operation.
  • the automatic matrix can be utilized, without changes, in the sorting of objects. If required, it can be changed by the matrix sorting apparatus so as to optimize the automatic sorting matrix.
  • Figure 5 broken down into 5A and 5B, refers to the nonbinary digitizing method and apparatus for analog electrical signals, through the use of adjustable level detectors linearly staggered and connected to a sorting channel with two bichromatic views that detect the light from the objects, utilizing photodetectors to produce the pairs of electrical signals GA-RA (24), from view "A", and GB-RB (25), from view "B".
  • signals G-R referring to the cyan and red contents, respectively, of the object under analysis and captured by an analysis camera lens.
  • Each electrical signal represents a color content for the article and may be more or less intense than an analog reference level while having the typical shape (27) shown in the drawing.
  • Fig. 5A whereby the electrical signal (27) passes through an analog rectifier circuit (28) at whose output a signal (29) appropriate for the multiplexer (30) is obtained.
  • Signals G and R are also sent to a presence and polarity detector (31) so as to accurately determine when the object enters and leaves the analysis chamber and to verify in which quadrant or on which semi-axis of the cartesian plane the signal pairs GA-RA and GB-RB are located.
  • Signals with a cyan content (33), red content (34) and presence/polarity (32) are obtained by sampling at the multiplexer output.
  • a set of level detectors for cyan and another for red which will be detailed in Fig. 5B.
  • each set of level detectors can have up to eight detectors, which will have their outputs interconnected to logical units for temporary memorization with 3-state latch-buffer operation.
  • Fig. 5A there are eight detectors for the cyan sample signal (33) as well as for the red sample signal (34).
  • signals G+, G-, R+ and R- (32) at the muliplexer output which are sent to a latch-buffer circuit (40) in the form of a 4-bit signal.
  • the channel microprocessor (41) synchronizes and controls the multiplexer (30) and the circuitry receiving the digitized electrical circuits (35, 36, 37) so that at the latch-buffer circuit outputs (38, 39, 40) signal pairs G-R are ready to be analyzed on the basis of the sorting matrix process.
  • Figure 5B provides an example of a circuit capable of generating linearly staggered and adjustable levels, which are applied in detectors used to digitize the electrical signals that characterize object color.
  • the general sensitivity potentiometer (51) acts on the operational amplifier (57) so that its output (59) will vary linearly with changes in general sensitivity.
  • Sensitivity levels S1, S2, ... S8 may show the same difference in potential among themselves provided that the resistors linked to these levels have the same value. Voltage at the S1 level, for example, depends on the output voltage (59 and 60) for each amplifier (57 and 58) connected to the opposite ends of the resistor network.
  • the electrical potentials for the levels can also be subjected to a variation in discrete values by using a microprocessor (52) acting on a network of R/2R resistors (53) as if it were a digital-analog converter.
  • a microprocessor acting on a network of R/2R resistors (53) as if it were a digital-analog converter.
  • four binary outputs on the microprocessor (52), acting on the resistor network (53) can apply up to sixteen different voltages to the inverter input (54) of the amplifier (55), depending on the binary number at the microprocessor output.
  • At the output (56) of the amplifier (55) controlled by the microprocessor there will be a voltage variation inversely proportional to input variation.
  • Output potential (56) for the amplifier (55), acting on the amplifiers (57 and 58) linked to the ends (59 and 60) of the resistor network, will provoke an increase in voltage directly proportional to the voltage increase controlled by the action of the microprocessor on network R/2R (53).
  • the action of the microprocessor (52) can be utilized as an automatic sensitivity control, or for acting on detection sensitivity for signals associated with the color cyan or red, regardless of the quadrant, semi-axis, view or channel, thereby becoming a powerful apparatus for improving sorting accuracy.
  • the detector (64) linked to level S1 will have logic state "0" at its output (63) when the signal potential (62) applied to its inverter input is less than the potential defined by level S1 at its non-inverter input (61); when the potential of the input signal (62) is greater than that of S1 at its output (63) it will have logic state "1".
  • Figure 6 shows a pair of electrical signals for cyan-­red (33 and 34) and their digital values at the moment the signals reach their peak value. Also shown is the matrix panel (47) with a specific sorting matrix that contains data on unacceptable colors only in the first quadrant "Q1" and on the negative semi-axis "Y” (G-), as well as a rectangular stacked shape (65) showing the organization of addresses and the contents of the work memory that stores the sorting matrix on the panel. Because it is positive, the signal pair G-R defines a point in the first quadrant "Q1", which means that the address to be searched for in memory is found in the block identified in the drawing by "Q1", which corresponds to bytes 00 to 07 (hexadecimal code).
  • Signal G (33) at its peak, reaches six detection levels and corresponds to the sixth vertical line of the block (65), in other words, hexadecimal address 05, since the address of the first line is 00.
  • data 11111000 (68) which corresponds to the sixth line (70) of the first quadrant on the matrix panel (47) displaying the control sorting matrix.
  • the result of digitizing signals G-R, applying the matrix sorting process, is obtained through logic operation "E", bit by bit, between the digital signal R (36) and the contents of the address (68) defined by G and "Q1".
  • Figure 7 represents one of the shapes of the matrix panel for use with eight-bit microprocessors, wherein each small circle inside can represent an LED and the center symbol (*) indicates the origin of the cartesian plane. Operational command keys for the matrix panel are shown in Fig. 10.
  • Figure 8 represents the matrix panel containing a sorting matrix in which "1", indicating an illuminated point, identifies the geometrical place for points with content "1” and distinguishes unacceptable colors.
  • "0" indicates a nonilluminated point and identifies the geometric place of points with content "0”, or acceptable colors.
  • Figure 9 shows the matrix panel (47), a lit LED (79), a light-conductor cable (80), a photodetector (81) coupled to the light-conductor cable, a data input port (76), two LED buffer-drivers -- one (77) for acting on LEDs found on lines and the other (78) for acting on LEDs found in columns -- the microprocessor (42) that forms part of the general CPU, RAM (45) and ROM (46). Also shown are waveshapes relative to the activation of the LED and its change in logic state through the action of the light-conductor cable and its related circuit.
  • LEDs are submitted to scanning, going from one LED to another on each line, through every line in the quadrant, following the sequence Q1-Q2-Q3-­Q4 and then semi-axes R+, G+, R- and G-. Scanning is fast enough to prevent scintillation.
  • the LED is represented by a small circle, with the black one corresponding to a lit LED and the black one to an unlit LED, based on the on-off indication (81).
  • the waveshape (82) for the lit LED and the waveshape (83) for the unlit one are shown beside their corresponding circles.
  • the matrix panel For operation of the circuit that allows for changing the LED logic state, one should first put the matrix panel in editing mode, then place the free point of the light-conductor cable (80) on the LED one wishes to activate (79). In editing mode, scanning speed is substantially reduced to the point where the scanning is visible. The other end of the light-conductor cable (80) is emplaced over a photodetector. While LEDs are being scanned, the microprocessor sends a command pulse (88) that causes the LED to turn on and immediately go off. The lit or unlit LED, although not corresponding to the LED toward which the light conductor is pointed, shows differing waveshapes (84 and 85).
  • the light detector (81) shows no change in state, and when the microprocessor verifies this condition at the "door” (76), it verifies the change in state. At the moment LED scanning reaches the LED toward which the light conductor is pointed, the state changes (86, 87 and 88), which will be verified by the microprocessor. This process serves for creating, editing or modifying sorting matrixes.
  • FIG. 10 is similar to Fig. 5A; therefore, the process for multiplexing and digitizing electrical signals for cyan (35) and red (36), along with the identification of quadrants and semi-axes (37), will not be discussed here.
  • the channel microprocessor (41) is interlinked to the RAM (43) that contains the control sorting matrix and specific channel data (sensitivity, reference gain, etc.) as well as being interlinked to the ROM (44) that contains the channel control program and all its routines and subroutines. It is further interlinked to the general CPU microprocessor (42), the control system (49), the ejector valve (50), the multiplexer (30), and finally, to the digitized signal collector group, consisting of the latch-buffer (38, 39 and 40).
  • the connections between the channel microprocessor (41) and the general CPU microprocessor are intended to transfer data relative to the sorting matrix, sensitivity control, gain control and channel-functioning supervision, all in accordance with the general operational program stored in the general CPU ROM (46).
  • ROM (46) also contains sorting matrixes preprogrammed and recommended by the manufacturer ready for use by the operator.
  • RAM (45) contains all sorting matrixes that have been created, modified or edited, as well as the matrix that has been sent to the matrix panel by the general microprocessor. Another function of the general microprocessor is to interpret all commands originating from the control panel (49) and transfer this data.
  • this invention refers to a color sorting apparatus, which includes a means of conveying objects, uniformly and individually, to the interior of an illuminated analysis chamber linked to electronic photodectors and circuitry with the ability to transform into electrical signals the light reflected, transmitted or emitted by the objects. It also includes apparatuses for dividing the objects into wanted and unwanted groups by means of a matrix sorting process in which color analysis of the objects utilizes a comparison between the electrical signals and the contents of the sorting matrix.
  • This matrix can be selected, modified or created by the operator by means of a matrix selection apparatus. Otherwise, it can be generated by the automatic matrix apparatus by sampling the electrical signals resulting from passing a group of objects with specific color characteristics through the analysis chamber. The matrix generated by this process can also be modified by the operator by means of a matrix apparatus in order to maximize the performance of the invention.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Sorting Of Articles (AREA)
  • Spectrometry And Color Measurement (AREA)
EP19890106349 1988-04-15 1989-04-11 Vorrichtung zur Sortierung nach Farbe Withdrawn EP0342354A3 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
BR8801824A BR8801824A (pt) 1988-04-15 1988-04-15 Processo matricial para selecao de artigos pela cor
BR8801825 1988-04-15
BR8801825A BR8801825A (pt) 1988-04-15 1988-04-15 Dispositivo matricial para selecao de artigos pela cor
BR8801824 1988-04-15
BR8801851 1988-04-19
BR8801851A BR8801851A (pt) 1988-04-19 1988-04-19 Maquina para selecao de artigos pela cor

Publications (2)

Publication Number Publication Date
EP0342354A2 true EP0342354A2 (de) 1989-11-23
EP0342354A3 EP0342354A3 (de) 1992-01-08

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EP19890106349 Withdrawn EP0342354A3 (de) 1988-04-15 1989-04-11 Vorrichtung zur Sortierung nach Farbe

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MX (1) MX171662B (de)
OA (1) OA08993A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562506A2 (de) * 1992-03-27 1993-09-29 BODENSEEWERK GERÄTETECHNIK GmbH Verfahren und Vorrichtung zum Sortieren von Schüttgut
EP0661108A2 (de) * 1993-12-28 1995-07-05 H.F. & Ph.F. Reemtsma GmbH & Co Verfahren zum optischen Sortieren von Schüttgut
FR2732464A1 (fr) * 1995-03-30 1996-10-04 Alcatel Cable Procede et dispositif de verification de la conformite d'un element isolant donne avec un element isolant de reference
ES2111456A1 (es) * 1995-04-20 1998-03-01 Univ Las Palmas Gran Canaria Sistema electronico coprocesador bioinspirado para la deteccion de colores en imagenes digitales.
EP0775533A3 (de) * 1995-11-24 1998-06-17 Elpatronic Ag Sortierverfahren
DE19902754A1 (de) * 1999-01-25 2000-07-27 Raiss Ervedo Jun Partikel-Sortiervorrichtung
EP1083007A2 (de) * 1999-09-10 2001-03-14 Satake Corporation Verfahren und Vorrichtung zum Sortieren von körnigen Objekten mit mindestens zwei verschiedene Schwellwerten
WO2017212427A1 (es) * 2016-06-07 2017-12-14 Federeación Nacional De Cafeteros De Colombia Dispositivo y método de clasificación de granos

Citations (5)

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FR1291802A (fr) * 1961-03-30 1962-04-27 Mandrel Ind Séparation électrique de couleurs
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EP0111877A1 (de) * 1982-12-21 1984-06-27 ILLYCAFFE S.p.A. Verfahren zum Sortieren von körnigem Material und Maschine zur Ausführung dieses Verfahrens
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EP0111877A1 (de) * 1982-12-21 1984-06-27 ILLYCAFFE S.p.A. Verfahren zum Sortieren von körnigem Material und Maschine zur Ausführung dieses Verfahrens
GB2180060A (en) * 1983-01-07 1987-03-18 Delta Technology Corp Agricultural product sorting
EP0122653A1 (de) * 1983-03-29 1984-10-24 Institut National Polytechnique Verfahren und Einrichtung zum Sortieren von Gegenständen nach ihrer äusseren Erscheinung, insbesondere für eine Farbsortierung von Gegenständen

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562506A2 (de) * 1992-03-27 1993-09-29 BODENSEEWERK GERÄTETECHNIK GmbH Verfahren und Vorrichtung zum Sortieren von Schüttgut
EP0562506A3 (de) * 1992-03-27 1995-01-25 Bodenseewerk Geraetetech
EP0661108A2 (de) * 1993-12-28 1995-07-05 H.F. & Ph.F. Reemtsma GmbH & Co Verfahren zum optischen Sortieren von Schüttgut
EP0661108A3 (de) * 1993-12-28 1997-02-12 Reemtsma H F & Ph Verfahren zum optischen Sortieren von Schüttgut.
FR2732464A1 (fr) * 1995-03-30 1996-10-04 Alcatel Cable Procede et dispositif de verification de la conformite d'un element isolant donne avec un element isolant de reference
EP0740148A1 (de) * 1995-03-30 1996-10-30 Alcatel Cable Verfahren und Vorrichtung zur Überprüfung eines isolierenden Elementes
US5650620A (en) * 1995-03-30 1997-07-22 Alcatel Cable Method and device for verifying that a given insulative element conforms to a reference insulative element
ES2111456A1 (es) * 1995-04-20 1998-03-01 Univ Las Palmas Gran Canaria Sistema electronico coprocesador bioinspirado para la deteccion de colores en imagenes digitales.
EP0775533A3 (de) * 1995-11-24 1998-06-17 Elpatronic Ag Sortierverfahren
DE19902754A1 (de) * 1999-01-25 2000-07-27 Raiss Ervedo Jun Partikel-Sortiervorrichtung
EP1083007A2 (de) * 1999-09-10 2001-03-14 Satake Corporation Verfahren und Vorrichtung zum Sortieren von körnigen Objekten mit mindestens zwei verschiedene Schwellwerten
EP1083007A3 (de) * 1999-09-10 2002-07-24 Satake Corporation Verfahren und Vorrichtung zum Sortieren von körnigen Objekten mit mindestens zwei verschiedene Schwellwerten
AU764812B2 (en) * 1999-09-10 2003-08-28 Satake Corporation Method and apparatus for sorting granular objects with at least two different threshold levels
KR100827583B1 (ko) * 1999-09-10 2008-05-07 가부시끼가이샤 사따께 2 개 이상의 다른 임계 레벨로 입상물들을 선별하는 방법및 장치
WO2017212427A1 (es) * 2016-06-07 2017-12-14 Federeación Nacional De Cafeteros De Colombia Dispositivo y método de clasificación de granos
CN109562416A (zh) * 2016-06-07 2019-04-02 哥伦比亚咖啡生产者协会 用于分选豆子的装置和方法

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EP0342354A3 (de) 1992-01-08
OA08993A (en) 1990-11-30

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