EP1717153A1 - Dispositif de détection d'étiquettes portées par une bande support - Google Patents

Dispositif de détection d'étiquettes portées par une bande support Download PDF

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Publication number
EP1717153A1
EP1717153A1 EP06004889A EP06004889A EP1717153A1 EP 1717153 A1 EP1717153 A1 EP 1717153A1 EP 06004889 A EP06004889 A EP 06004889A EP 06004889 A EP06004889 A EP 06004889A EP 1717153 A1 EP1717153 A1 EP 1717153A1
Authority
EP
European Patent Office
Prior art keywords
ultrasonic
receiver
labels
transmitter
detection
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.)
Granted
Application number
EP06004889A
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German (de)
English (en)
Other versions
EP1717153B1 (fr
Inventor
Hans-Dieter Priebsch
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.)
Leuze Electronic GmbH and Co KG
Original Assignee
Leuze Electronic GmbH and Co KG
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
Application filed by Leuze Electronic GmbH and Co KG filed Critical Leuze Electronic GmbH and Co KG
Publication of EP1717153A1 publication Critical patent/EP1717153A1/fr
Application granted granted Critical
Publication of EP1717153B1 publication Critical patent/EP1717153B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/40—Controls; Safety devices
    • B65C9/42—Label feed control

Definitions

  • the invention relates to a device for detecting labels on a carrier material.
  • Such a device is known from DE 199 21 217 A1 known.
  • a transmitter emitting ultrasonic waves and a receiver receiving ultrasonic waves are provided for detecting labels on a carrier material.
  • the carrier material is guided with the labels in the space between transmitter and receiver.
  • the ultrasonic waves are attenuated in different ways.
  • the corresponding differences of the received signal at the output of the receiver are detected by comparing the received signal with a threshold value.
  • This threshold value is adapted to the occurring levels of the received signals by an adjustment process. In the case of the adjustment process carried out before the detection of the labels, the height of the threshold value is determined automatically when the carrier material arranged between the transmitter and the receiver and / or a label arranged thereon are activated as a function of the received signal registered thereby.
  • the invention has for its object to provide a device of the type mentioned, by means of which for the broadest possible range of carrier materials and label materials a secure label recognition is possible.
  • the device according to the invention serves for the detection of labels on a carrier material, and comprises an optical sensor and an ultrasonic sensor, which can be activated via switching means optionally for the detection of the labels.
  • the optical sensor is particularly suitable for detecting labels on thick, non-transparent carrier materials such as, for example, paper carrier materials.
  • the selection of the optical sensor for label detection is carried out by actuation of the switching means and can be carried out so easily by a user.
  • both the optical sensor and the ultrasonic sensor work according to the light barrier principle, ie the transmitter and the receiver of the optical sensor on the one hand and the ultrasonic transmitter and the ultrasonic receiver of the ultrasonic sensor on the other hand are each on both sides of a detection plane in which the carrier material with the labels being guided relative to the device, arranged.
  • the device is preferably arranged in a fork-shaped housing with two fork arms, between which runs the detection plane.
  • the components of the optical sensor and the ultrasonic sensor are arranged in this housing so that the beam axis of the ultrasonic waves emitted by the ultrasonic transmitter and the optical axis of the transmitted light beams emitted by the transmitter intersect in the detection plane.
  • the current location and time of detection for label detection is independent of whether the ultrasonic sensor or optical sensor is used for this purpose.
  • the label detection is carried out by a threshold value of the received signals of the receiver or the ultrasonic receiver.
  • the threshold value used for this purpose is preferably determined in a calibration process, wherein the carrier material with the labels with the optical sensor or the ultrasonic sensor is detected during the adjustment process. Since the threshold value is thus derived from the measured values of the label detection itself, a particularly high level of detection reliability is achieved.
  • An advantage of the device according to the invention continues to be that essential parts of the evaluation circuit of this device can be used for both the optical sensor and the ultrasonic sensor, resulting in a particularly simple and thus cost-effective design of the evaluation circuit.
  • a modulation unit can be used both for the modulation of the ultrasonic waves emitted by the ultrasonic transmitter and for the modulation of the transmitted light beams emitted by the transmitter.
  • an adjustment circuit can be used to perform an adjustment when the ultrasonic sensor is activated or when the optical sensor is activated.
  • FIG. 1 schematically shows the construction of a device 1 for detecting labels 3 applied to a carrier material 2.
  • the device 1 is integrated in a fork-shaped housing 4 with two forked arms 4a, 4b extending at a distance from one another.
  • the strip-shaped carrier material 2 with the labels 3 is guided through the intermediate space of the fork arms 4a, 4b, wherein in the present case they are guided resting on the lower fork arm 4a in a detection plane.
  • an ultrasonic sensor and an optical sensor are arranged in the housing 4 of the device 1. Via switching means, either the ultrasonic sensor or the optical sensor is activated in order to be able to detect the labels 3 on the carrier material 2 in the detection plane.
  • the ultrasonic sensor has an ultrasonic transmitter 5 integrated in the lower fork arm 4a and an ultrasonic receiver 6 arranged in the upper fork arm 4b.
  • the ultrasonic transmitter 5 emits directional ultrasonic waves along a beam axis 7, these partially passing through the carrier material 2 and the labels 3 and then guided to the ultrasonic receiver 6.
  • the beam axis 7 extends at an inclination angle inclined to the surface normal of the detection plane. As a result of this inclination of the beam axis 7 to the surface of the carrier material 2 with the labels 3 to be detected, interference-related minima and maxima of the ultrasonic waves are also partially averaged out.
  • the optical sensor has a transmitter 8 integrated in the lower fork arm 4a and a receiver 9 arranged in the upper fork arm 4b.
  • the transmitter 8 emits transmitted light rays along an optical axis 10, wherein the transmitted light beams partially pass through the carrier material 2 with the labels 3 and are then guided to the receiver 9.
  • the transmitter 8 emits transmitted light rays in the infrared range.
  • the optical axis 10 of the transmitter 8 also extends inclined to the plane of the carrier material 2.
  • the arrangement of the ultrasonic sensor and the optical sensor is selected so that the beam axis 7 and the optical axis 10 intersect in the detection plane.
  • the arrangement of the optical sensor in the housing 4 may be modified such that mirrors for deflecting the transmitted light beams are used for coupling the transmitted light beams into the detection plane.
  • FIG. 2 shows the evaluation circuit 11 for the device 1 according to FIG. 1.
  • the ultrasound transmitter 5 and the ultrasound receiver 6 are shown as components of the ultrasound sensor and the transmitter 8 and the receiver 9 as components of the optical sensor and with the same reference numerals as in FIG 1 denotes.
  • the ultrasonic sensor is driven by a driver circuit consisting of a coil 12, a MOSFET transistor 13 and a resistor 14. With the coil 12, the voltage required for the operation of the ultrasonic transmitter 5 is provided, the MOSFET transistor 13 is used for switching the ultrasonic transmitter 5.
  • the optical sensor is driven by a driver circuit consisting of a transistor 15 and two resistors 16, 17.
  • a trigger button 18 is actuated by a user, which is attached to the outside of the housing 4 of the device 1.
  • the shutter button 18 forms with a resistor 19, the input circuit for a D flip-flop 20.
  • the second switch 22 only the ultrasonic receiver 6 or the receiver 9 is connected to the evaluation circuit 11 depending on the control of the D flip-flop 20.
  • a light emitting diode 23, 24 is connected in each case.
  • the visible on the outside of the housing 4 LEDs form display elements that signal whether the ultrasonic sensor or the optical sensor is activated. In the event that the ultrasonic sensor is activated, only the first light-emitting diode 23 lights up. In the event that the optical sensor is activated, only the second light-emitting diode 24 lights up.
  • part of the evaluation circuit 11 forms a modulation unit 25.
  • the ultrasound waves emitted by the ultrasound sensor or the transmitted light beams emitted by the transmitter 8 are modulated by the modulation unit 25.
  • the modulation unit 25 comprises two pulse generators 26, 27, which in each case a resistor 28, 29 is connected upstream.
  • a ramp circuit consisting of resistors 30, 31 and capacitors 32, 33 is provided.
  • the outputs of the pulse generators 26, 27 are guided to an AND gate 34, which is connected to the switch 21.
  • the ramp circuit generates square-wave pulses with the frequency f 1 .
  • the second pulse generator 27 is the rectangular pulses the higher frequency Modulation frequency f 2 superimposed.
  • the ultrasound waves or the transmitted light beams this modulation is impressed.
  • the received signals of the ultrasonic receiver 6 or receiver 9 are filtered in a circuit consisting of a resistor 35, a bandpass filter 36, a capacitor 37 and two diodes 38a, 38b and then fed to the receiving part of the evaluation circuit 11, which a Evaluation unit 39 forms integrated with matching circuit.
  • the evaluation unit 39 has a comparator 40 and a switching output 41 connected thereto. During operation of the device 1, only the ultrasonic sensor or the optical sensor is activated for label detection. To distinguish the labels 3 from the carrier material 2, the received signals of the ultrasonic receiver 6 or the receiver 9 are evaluated in the comparator 40 with a threshold value, whereby a binary switching signal is generated, indicate the switching states, whether a label 3 has been detected or not. This binary switching signal is output via the switching output.
  • the threshold value is determined by means of a calibration process, which is carried out before operation of the device 1.
  • a calibration process which is carried out before operation of the device 1.
  • either the ultrasonic sensor or the optical sensor is activated by performing the trigger button 18 before performing the adjustment process.
  • the adjustment process is performed by means of the adjustment circuit.
  • the adjustment circuit has a teach-in button 42, with which the adjustment process can be started.
  • the threshold value for the comparator 40 is derived automatically from the received signals of the ultrasound receiver 6 or of the receiver 9 registered during label detection.
  • the teach-in button 42 is actuated by a user a first time. Then, preferably, the carrier material 2 is automatically guided with the labels 3 through the detection plane. The recorded receive signals are stored in a sample and hold member 43.
  • the teach-in key 42 is actuated a second time. This is followed by an automatic adjustment of the threshold value for the comparator 40 to the peak values of the received signals stored in the sample and hold element 43.
  • the peak values correspond to the received signals upon detection of the carrier material 2 without labels 3.
  • the adjustment circuit comprises a comparator 44 with upstream capacitor 45 and a comparator 44 downstream D-type flip-flop 46. Furthermore, an output circuit Q of the D flip-flop 46 includes a trigger circuit with a cut trigger 47 and upstream resistor 48 and capacitor 49 and parallel thereto a step generator 50 on.
  • the output Q of the D flip-flop 46 is fed to an input CS of an E 2 potentiometer 51 and to a switch 52.
  • the cut trigger 47 is guided on an input U / D of the E 2 potentiometer 51.
  • the step generator is routed to another input of the E 2 potentiometer 51.
  • the output of the E 2 comparator is fed to an input of the comparator 44. Furthermore, the output of the E 2 potentiometer 51 is guided via a divider 53 consisting of two resistors 53 a, 53 b to an input of the comparator 40 used to generate the binary switching signal.
  • the E 2 potentiometer 51 is reset via the D flip-flop 46 and the cut trigger 47 to an initial value.
  • the switch 52 is closed by actuating the teach-in button 42. Then, the input U / D of the E 2 potentiometer 51 is controlled via the D flip-flop 46 and the cut trigger 47, so that this increases its resistance incrementally. In this case, the increments for increasing the resistance value are predetermined by the step generator 50. The incrementation in the E 2 potentiometer 51 takes place until its output signal corresponds to the peak value of the received signals stored in the sample and hold element 43. Since then the comparator 44 is reversed and this thereby controls the D flip-flop 46 accordingly, the increment of the E 2 potentiometer 51 is terminated thereon. The output signal then present at the output of the E 2 potentiometer 51 then defines the threshold value for the comparator 40 for the operation of the device 1 subsequent to the calibration process.
  • the threshold value does not correspond to the peak value of the received signal but a fraction thereof, which is determined by the resistors 53 a, b of the divider 53.
  • the resistors of the divider 53 are dimensioned such that the threshold value for the comparator 40 corresponds to half the peak value.

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Labeling Devices (AREA)
EP06004889A 2005-04-30 2006-03-10 Dispositif de détection d'étiquettes portées par une bande support Expired - Lifetime EP1717153B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005020255 2005-04-30

Publications (2)

Publication Number Publication Date
EP1717153A1 true EP1717153A1 (fr) 2006-11-02
EP1717153B1 EP1717153B1 (fr) 2008-08-20

Family

ID=36691430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06004889A Expired - Lifetime EP1717153B1 (fr) 2005-04-30 2006-03-10 Dispositif de détection d'étiquettes portées par une bande support

Country Status (5)

Country Link
US (1) US7437960B2 (fr)
EP (1) EP1717153B1 (fr)
AT (1) ATE405493T1 (fr)
DE (1) DE502006001360D1 (fr)
ES (1) ES2308615T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4199741B2 (ja) * 2005-02-25 2008-12-17 Ｎｅｃディスプレイソリューションズ株式会社 波動受信装置および波動受信判定方法
DE102005026200A1 (de) 2005-06-07 2006-12-21 Pepperl + Fuchs Gmbh Detektion und Vorrichtung zur Detektion von Aufzeichnungsträgern
DE102007046769A1 (de) * 2007-09-29 2009-04-16 Leuze Electronic Gmbh + Co. Kg Sensoranordnung
US9239386B2 (en) 2011-10-05 2016-01-19 Infineon Technologies Ag Sonic sensors and packages

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8808219U1 (de) * 1988-06-27 1988-08-25 Eggers Elektronik GmbH, 7530 Pforzheim Detektor zur Erkennung von Etiketten auf einem zumindest teilweise transparenten, bahnenförmigen Träger
US5458728A (en) * 1994-06-27 1995-10-17 Galchefski; John Apparatus and method for applying labels onto small cylindrical articles with improved seam formation by retarded article rotation
DE19921217A1 (de) 1999-05-07 2000-11-16 Leuze Electronic Gmbh & Co Vorrichtung zur Detektion von Etiketten
FR2807395A1 (fr) * 2000-04-10 2001-10-12 Vincent Ind Derouleur/enrouleur pour bande-support d'etiquettes adhesives ou objets similaires
EP1201582A2 (fr) * 2000-10-25 2002-05-02 Leuze electronic GmbH + Co. Dispositif pour contrôler des feuilles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5796091A (en) * 1993-11-24 1998-08-18 Metrologic Instruments, Inc. Automatic hand-supportable omnidirectional laser projection scanner with handle-controllable projection axis
US5486063A (en) * 1995-01-09 1996-01-23 Intermec Incorporated Method and apparatus for sensing the length of label or tag media by detecting changes in relative thickness
JP2000202369A (ja) * 1999-01-12 2000-07-25 Hitachi Ltd 紙葉類取扱装置
DE19927865B4 (de) * 1999-05-07 2005-12-01 Leuze Electronic Gmbh & Co Kg Vorrichtung zur Detektion von Objekten
US6709393B2 (en) * 2002-03-26 2004-03-23 Fuji Photo Film Co., Ltd. Ultrasonic receiving apparatus and ultrasonic receiving method
JP2005162424A (ja) * 2003-12-04 2005-06-23 Nisca Corp シート供給装置及びこれを用いた画像読取装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8808219U1 (de) * 1988-06-27 1988-08-25 Eggers Elektronik GmbH, 7530 Pforzheim Detektor zur Erkennung von Etiketten auf einem zumindest teilweise transparenten, bahnenförmigen Träger
US5458728A (en) * 1994-06-27 1995-10-17 Galchefski; John Apparatus and method for applying labels onto small cylindrical articles with improved seam formation by retarded article rotation
DE19921217A1 (de) 1999-05-07 2000-11-16 Leuze Electronic Gmbh & Co Vorrichtung zur Detektion von Etiketten
FR2807395A1 (fr) * 2000-04-10 2001-10-12 Vincent Ind Derouleur/enrouleur pour bande-support d'etiquettes adhesives ou objets similaires
EP1201582A2 (fr) * 2000-10-25 2002-05-02 Leuze electronic GmbH + Co. Dispositif pour contrôler des feuilles

Also Published As

Publication number Publication date
ATE405493T1 (de) 2008-09-15
DE502006001360D1 (de) 2008-10-02
EP1717153B1 (fr) 2008-08-20
ES2308615T3 (es) 2008-12-01
US20060260406A1 (en) 2006-11-23
US7437960B2 (en) 2008-10-21

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