EP1223132A2 - Optoelektronische Vorrichtung - Google Patents
Optoelektronische Vorrichtung Download PDFInfo
- Publication number
- EP1223132A2 EP1223132A2 EP02000861A EP02000861A EP1223132A2 EP 1223132 A2 EP1223132 A2 EP 1223132A2 EP 02000861 A EP02000861 A EP 02000861A EP 02000861 A EP02000861 A EP 02000861A EP 1223132 A2 EP1223132 A2 EP 1223132A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- receiving elements
- optoelectronic device
- feed table
- output signals
- light beams
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
- B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
- B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
- B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
- B65H7/125—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation sensing the double feed or separation without contacting the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/13—Thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/50—Occurence
- B65H2511/52—Defective operating conditions
- B65H2511/524—Multiple articles, e.g. double feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
- B65H2553/41—Photoelectric detectors
- B65H2553/414—Photoelectric detectors involving receptor receiving light reflected by a reflecting surface and emitted by a separate emitter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/13—Parts concerned of the handled material
- B65H2701/131—Edges
- B65H2701/1315—Edges side edges, i.e. regarded in context of transport
Definitions
- the invention relates to an optoelectronic device according to the preamble of claim 1.
- Such devices have a transmitter which emits light rays on, the transmitted light beams used to illuminate an object structure become. There is a received light beam at a distance from the transmitter receiving recipient.
- the receiver consists of a line-shaped Arrangement of receiving elements.
- the object structure is due to the back reflection of the transmitted light rays are imaged on the receiver, the Receiving light beams at the outputs of the receiving elements output signals generate in the form of a contrast pattern, which of the object structure equivalent.
- the invention has for its object a device of the aforementioned Type in such a way that with it a safe and reliable sheet control can be carried out on a sheet-processing machine.
- the output signals A are used to determine the object structure n with two threshold values S 1, S 2, with S 2 ⁇ S 1, for distinction of exposed receiving elements with output signals A n> S 1 evaluated.
- the object structure has at least one edge of an arc, to which part of the transmitted light beams is aligned.
- a number N b of successive exposed receiving elements A n is obtained by the received light rays reflected back from the edge of the sheet, the number N b of the exposed receiving elements providing a measure of the thickness of the sheet.
- the basic idea of the invention is therefore to arrange the optoelectronic device laterally offset from the sheets to be detected in such a way that the edge of a sheet can be detected with it.
- the edge of a sheet or possibly the edges of several sheets are thus imaged on the receiver.
- the part of the transmitted light rays reflected back from each edge of a sheet is reflected back to a predetermined number of receiving elements in accordance with the position and the thickness of the sheet. Due to the amount of light reflected back to these receiving elements, their output signals lie above the threshold value S 2 , so that they are exposed.
- the transmitted light rays passed laterally in the arc are not or only slightly reflected back to the receiver, so that the corresponding receiving elements remain unexposed, that is to say the output signals A n are then below a threshold value S 1 (S 1 ⁇ S 2 ).
- the length Such a sequence provides a measure of the thickness of an arc.
- An essential advantage of the device according to the invention is that that in a sheet-processing machine, sheets can also be reliably detected if they are not only single sheets but also multiple sheets lie on top of each other several times. It can with the optoelectronic according to the invention Device the individual sheets in a multiple sheet arrangement precisely when it is between these arches different due to the inevitable fluttering movements of the arches Gaps exist due to air pockets between the arches arise.
- the individual edges of the sheets and the upper edge of the feed table Corresponding the number and locations of the edges will be followed by the recipient certain lengths of successive exposed receiving elements registered. Between the individual sequences of exposed receiving elements become sequences of successive unexposed receiving elements registered. These unexposed receiving elements are thereby get that part of the transmitted light rays into the gaps between the Bows are guided and therefore no longer or only to a small extent Recipients are returned.
- sequences of exposed and unexposed receiving elements can be the number and the thickness of the on the feed table capture lying arches.
- a single sheet is expediently recorded in a learning phase, whose thickness is saved as a reference value. This allows in the subsequent work phase with great certainty by comparing the current measured values with the reference value single sheets of multiple sheets be distinguished.
- Figure 1 shows schematically an optoelectronic device 1, the side a feed table 2 of a sheet-processing machine, in particular one Printing machine is arranged.
- the sheets 3 are in the longitudinal direction of the feed table 2, that is, perpendicular conveyed to the transverse axis of the feed table 2 shown in Figure 1. at the transport of the sheets 3 exert these fluttering movements, in particular can be caused by high transport speeds. Therefore the sheets 3 are not close to each other or on the top of the feed table 2 on. Rather, there are 3 spaces between the arches, which can vary from sheet 3 to sheet 3. The expansion of the spaces can range from a fraction to a multiple of a sheet. These spaces are shown schematically in Figure 1.
- the optoelectronic device 1 can be constructed without great design effort and in particular almost without any design intervention in the sheet processing Machine can be mounted in the position shown in Figure 1. Conveniently, is a depression in the area of the optoelectronic device 1 4 attached to the feed table 2, which opens at the top. Thereby the paragraph shown in Figure 1 is created on the side wall of the feed table 2, on which the optoelectronic device 1 is aligned.
- Figure 2 shows different attachment options for the optoelectronic Device 1 on the sheet-processing machine.
- 1 shows the transport of sheets 3 with error-free operation of the sheet processing Machine.
- the top sheet 3 in each case becomes a stack 3 of sheets individually pulled off and then transported over the feed table 2.
- the optoelectronic Device 1 can for example be shown in FIG Installation positions must be mounted on the feed table 2, depending on the installation position a double at the respective height of the device 1 in the fault-free case or single sheet.
- the device 1 on the upper edge of the stack With a device 1 on the feed table 2 controls whether a single or double sheet is transported correctly is present, or whether a mistake in the sheet conveyance causes a different one Number of sheets 3 is present. With a device mounted on the stack 1 can be checked whether the sheets 3 are individually removed from the stack become.
- the optoelectronic device 1 shown in FIG. 1 is in a housing 5 integrated, which is integrated on a bracket, not shown.
- the Optoelectronic device 1 has a light beam 6 emitting Transmitter 7 and a receiver 9 receiving light rays 8, which are arranged next to each other at a distance.
- the transmitter 7 is for example formed by a light emitting diode.
- the receiver 9 consists of a line-shaped arrangement of receiving elements 10.
- the receiver 9 consists of a CCD line element with typically 100 up to 1000 reception elements lying close together 10.
- the longitudinal axis of the receiver 9, in the extension of which the transmitter 7 is located runs vertically to the surface of the feed table 2.
- the transmitter 7 is a transmission optics 11 for beam shaping of the transmitted light beams 6 subordinate.
- the receiver 9 is receiving optics 12 for focusing upstream of the received light beams 8.
- a filter 13 is arranged upstream of the receiving optics 12. Between the A filter 14 and the receiving optics 12 have an aperture 14 arranged.
- the aperture 14 ensures that the arches 3 are relatively large Distance range, the so-called depth of field, can be detected.
- the transmitter 7 is preferably operated in pulse mode so that the transmitted light beams 6 in the form of light pulses with a predetermined pulse-pause ratio be emitted.
- the transmitted light beams 6 in the form of light pulses with a predetermined pulse-pause ratio be emitted.
- an arrangement of several transmitters 7 may be provided.
- the transmitter 7 and the receiver 9 are connected to an evaluation unit 15, which is formed by a microcontroller, an ASIC or the like.
- the transmitted light beams 6 are on the upper edge of the Feed table 2 and the lateral edges of the sheets 3 lying thereon aligned.
- This object structure illuminated by the transmitted light beams 6 is due to the back reflection of the received light beams 8 on the sheet edges and the edge of the feed table 2 on the receiving elements 10 of the receiver 9 shown. So that the individual sheets 3 can be detected, the Resolution of the receiver 9 greater than the thickness of an arc 3.
- the thickness a sheet 3 is typically about 70 microns for sheets of paper, while the resolution of the receiver 9 is typically around 10 ⁇ m.
- the optoelectronic device 1 is at a predetermined distance from Upper edge of the feed table 2 and at an approximately constant distance from the edges the sheets 3, the positions of which vary somewhat during transport over the feed table 2 can, arranged so that the object structure completely from the Transmitting light beams 6 is illuminated.
- the evaluation of the output signals A n is explained below using the diagrams according to FIG. 3.
- the output signals A n of the receiving elements 10 are evaluated with two threshold values S 1 , S 2 , advantageously S 2 > S 1 .
- An exposed receiving element 10 is present when the quantity of light of the received light beams 8 striking it is so large that the corresponding output signal A n is above S 2 .
- FIG 3 several diagrams of different measurements are shown.
- the optoelectronic is first referenced Device 1 on the upper edge of the feed table 2.
- the feed table 2 is illuminated with the transmitted light beams 6, wherein in In this case, no sheets 3 lie on the feed table 2, that is, in Figure 3 shown feed table 2 is without the lying in positions AD Measure sheets 3.
- the part of the transmitted light beams 6 guided past the feed table 2 does not hit on the receiver 9, so that, moreover, a complete sequence of unexposed Receiving elements 10 is obtained.
- the sequences of exposed and non-exposed receiving elements 10 are compared with limit values N a, 1 and N a, 0 .
- the limit values N a, 1 and N a, 0 are stored as parameters in the evaluation unit 15. These limit values represent a number of exposed or non-exposed receiving elements 10, which must at least be obtained when measuring the feed table 2 so that the upper edge of the feed table 2 is considered to be recognized.
- the limit value N a, 1 is exceeded both for the sequence of the exposed receiving elements 10 and the limit value N a, 0 for the sequence of the unexposed receiving elements 10.
- the transition from the exposed to the unexposed receiving elements 10 must take place with a predetermined minimum steepness.
- the value N a, min is stored in the evaluation unit 15 as a further parameter as the maximum number of receiving elements 10 within which the transition from the exposed to the non-exposed receiving elements 10 must take place. If the highest receiving element 10 of the sequence of exposed receiving elements 10 shown in FIG. 3a is less than N a, min receiving elements 10 from the lowest of the sequence of unexposed receiving elements 10, the upper edge of the feed table 2 is deemed to have been detected.
- This evaluation is based on the consideration that between the sequences of the exposed and unexposed receiving elements 10 there can be a transition area with receiving elements 10, the output signals A n of which lie between S 1 and S 2 .
- the position n 0 of the upper edge of the feed table 2 preferably results from the average of the positions of the highest exposed and the lowest unexposed receiving element 10.
- the thicknesses and positions of the sheets 3 lying on the feed table 2 can subsequently be quantified.
- Figure 3b shows the adjustment of the device 1 to an individual on the Feed table 2 sheet 3 in position A. This adjustment is made expediently in the same or in a further learning phase in which a single sheet 3 on the feed table 2 through the detection area the optoelectronic device 1 is promoted.
- the position n 0 of the upper edge of the feed table 2 is again obtained as the measured value in this measurement.
- a signal peak is also obtained on the receiving elements 10 between n 1 and n 2 .
- This signal peak is caused by the fact that the transmitted light beams 6, which strike the edge of the sheet 3, are reflected back onto the receiving elements 10 between n 1 and n 2 , so that output signals with A n > S 2 are obtained in this area.
- the transmission light beams 6 running on both sides of the edge of the sheet 3 enter the space between the feed table 2 and sheet 3 or are guided past this laterally. This creates areas of unexposed output signals A n on both sides of the signal peak between n 1 and n 2 , which are below S 1 . Then the upper edge of the feed table 2 is detected again.
- the number N b of the exposed receiving elements 10 between n 1 and n 2 provides a measure of the position and thickness of the sheet 3 by referencing the position n 0 of the upper edge.
- the number N b is stored as a reference value N b, ref in the evaluation unit 15.
- the currently determined measured values of the sheet detection are compared with the reference value N b, ref , as a result of which a distinction is made between single and multiple sheets. If a current measured value N coincides with the reference value N b, ref with a predetermined accuracy, which is preferably defined via tolerance limits stored in the evaluation unit 15, then a single sheet is present.
- FIG. 3c Such a measured value acquisition during the work phase is in Figure 3c shown as an example.
- the measured values obtained in FIG. 3c correspond the case shown in Figure 3, in which a total of four sheets 3 in positions A, B, C and D lie on the feed table 2.
- the output signals A n according to FIG. 3c in turn show the upper edge of the feed table 2, which lies at n 0.
- n 1 and n 2 , n 3 and n 4 , n 5 and n 6 as well as n 7 and n 8 receive a total of four signal peaks, which are formed by continuous sequences of exposed receiving elements 10.
- sequences of unexposed receiving elements 10 are obtained between the signal peaks, the number N z of the receiving elements 10 in such a sequence of unexposed receiving elements 10 being a measure of the width of such Space provides.
- the lengths of these sequences are compared in the evaluation unit 15 with a limit value N z, min stored there. If the currently determined number N z is greater than N z, min , such a space is considered to be recognized.
- sequences N z1 , N z2 , N z4 are of the same order of magnitude as the widths of the signal peaks and are larger than the limit value N z, min , so that these sequences are classified as gaps .
- sequence N z3 lies below the limit value N z, min .
- the signal peaks between n 1 and n 2 on the one hand and n 7 and ng are recognized in the evaluation unit 15 as separate sequences of exposed receiving elements 10, each of which lies between two spaces recognized as safe.
- the lengths N 1 and N 4 of these sequences are compared with the reference value N b, ref , in which case there is sufficient correspondence so that these sequences are classified as single sheets, the lengths of the sequences N 1 and N 4 being a measure of provide the width of the respective single sheet.
- the length N z3 of the third sequence of unexposed receiving elements 10 is smaller than the limit value N z, min . Accordingly, the signal peaks between n 3 and n 4 and n 5 and n 6 are not resolved as separate signal peaks, but are evaluated in the evaluation unit 15 as a common signal peak lying between n 3 and n 6 .
- the width of this signal peak which is essentially defined by the relationship N 2 + N z3 + N 3 , is significantly larger than the reference value N b, ref , so that on the basis of this comparison the signal peak between n 3 and n 6 is classified as a multiple arc ,
- the evaluation of the output signals A n according to FIG. 3c thus provides a single resolution of the sheets 3 in positions A and D and a double sheet detection of the sheets 3 in positions B and C.
- the value for the thickness of a single sheet can drift due to environmental influences such as moisture, temperature or material fluctuations of different batches of sheets 3 to be detected.
- the stored reference value N b, ref can be tracked to the current measured values by means of an I controller.
- the distance of the sheet edges to the optoelectronic device 1 can vary over time. This results in a drift of the amplitude values of the output signals A n , which are preferably also carried in the evaluation unit 15. Alternatively, the drift of the amplitude values can also be compensated for by tracking the threshold values S 1 , S 2 .
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
Description
Die Erfindung wird im nachstehenden anhand der Zeichnungen erläutert. Es zeigen:
- Figur 1:
- Querschnitt durch einen Anlegetisch einer bogenverarbeitenden Maschine mit einer seitlich am Anlegetisch montierten optoelektronischen Vorrichtung zur Erfassung von Bögen auf dem Anlegetisch.
- Figur 2:
-
- a) Draufsicht auf die Anordnung gemäß Figur 1 mit verschiedenen Montageorten der optoelektronischen Vorrichtung.
- b) Seitenansicht der Anordnung gemäß Figur 2a.
- Figur 3:
- Ausgangssignale der Empfangselemente des Empfängers der optoelektronischen
Vorrichtung bei
- a) leerem Anlegetisch,
- b) einem auf dem Anlegetisch aufliegendem Bogen,
- c) mehreren auf dem Anlegetisch aufliegenden Bögen.
- (1)
- Optoelektronische Vorrichtung
- (2)
- Anlegetisch
- (3)
- Bogen
- (4)
- Vertiefung
- (5)
- Gehäuse
- (6)
- Sendelichtstrahlen
- (7)
- Sender
- (8)
- Empfangslichtstrahlen
- (9)
- Empfänger
- (10)
- Empfangselemente
- (11)
- Sendeoptik
- (12)
- Empfangsoptik
- (13)
- Filter
- (14)
- Blende
- (15)
- Auswerteeinheit
Claims (15)
- Optoelektronische Vorrichtung zur Ermittlung eines Schnittbildes einer Objektstruktur mit einem Sendelichtstrahlen emittierenden Sender, einem Empfangslichtstrahlen empfangenden Empfänger, welcher eine zeilenförmige Anordnung von N Empfangselementen aufweist, und einer Auswerteeinheit zur Auswertung der Ausgangssignale An (n = 1, ...N) der Empfangselemente, wobei die Objektstruktur mittels der Sendelichtstrahlen beleuchtet ist und die an dieser zurückreflektierten Empfangslichtstrahlen eine Abbildung der Objektstruktur auf den Empfangselementen des Empfängers generieren, dadurch gekennzeichnet, dass zur Ermittlung der Objektstruktur die Ausgangssignale An mit zwei Schwellwerten S1, S2 mit S2 ≥ S1 zur Unterscheidung von belichteten Empfangselementen (10) mit Ausgangssignalen An > S2 und unbelichteten Empfangselementen (10) mit Ausgangssignalen An < S1 bewertet werden, und dass die Objektstruktur wenigstens eine Kante eines Bogens (3) aufweist, auf welche ein Teil der Sendelichtstrahlen (6) ausgerichtet ist, wobei durch die von der Kante des Bogens (3) zurückreflektierten Empfangslichtstrahlen (8) eine Anzahl Nb von aufeinander folgenden belichteten Empfangselementen An (10) erhalten wird, wobei die Anzahl Nb der belichteten Empfangselemente (10) ein Maß für die Dicke des Bogens (3) liefert.
- Optoelektronische Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass während einer Einlernphase ein einzelner Bogen (3) in den Strahlengang der Sendelichtstrahlen (6) eingebracht ist, und dass die dabei ermittelte Anzahl Nb von aufeinander folgenden Empfangselementen (10) mit Ausgangssignalen An > S2 als Referenzwert Nb,ref in der Auswerteeinheit (15) abgespeichert wird, und dass zur Detektion wenigstens eines Bogens (3) während einer auf die Einlernphase folgenden Arbeitsphase die dabei registrierten Ausgangssignale An fortlaufend auf das Vorhandensein von Folgen von Ausgangssignalen An aufeinander folgender belichteter Empfangselemente (10) untersucht werden, wobei ein Bogen (3) als erkannt gilt, falls die Länge Nb einer Folge mit einer vorgegebenen Genauigkeit mit dem Referenzwert Nb,ref übereinstimmt.
- Optoelektronische Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass ein Bogen (3) als erkannt gilt, falls die Länge Nb einer Folge innerhalb von in der Auswerteeinheit (15) abgespeicherten Toleranzgrenzen mit dem Referenzwert Nb,ref übereinstimmt.
- Optoelektronische Vorrichtung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass durch den Vergleich der aktuellen Länge Nb mit dem Referenzwert Nb,ref Einfach- und Mehrfachbögen unterscheidbar sind.
- Optoelektronische Vorrichtung nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, dass deren Sendelichtstrahlen (6) mit einem Teil ihres Strahldurchmessers auf eine Oberkante eines Anlegetisches (2) einer Druckmaschine ausgerichtet sind, wobei auf der an die Oberkante anschließende Auflagefläche des Anlegetisches (2) wenigstens ein Bogen (3) aufliegt, welcher mit der Kante des Bogens (3) die Objektstruktur bildet.
- Optoelektronische Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass auf der Auflagefläche des Anlegetisches (2) ein Stapel von Bögen (3) aufliegt, welcher Bestandteil der Objektstruktur ist.
- Optoelektronische Vorrichtung nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, dass ein Teil der Sendelichtstrahlen (6) in Zwischenräume zwischen die Bögen (3) und/oder die Auflagefläche geführt ist, wobei die Höhe des Schwellwertes S1 so gewählt ist, dass die von den die Zwischenräume begrenzenden Oberflächen der Bögen (3) und/oder von der Auflagefläche als Empfangslichtstrahlen (8) auf Empfangselemente (10) des Empfängers (9) zurückreflektierten Sendelichtstrahlen (6) in diesen Empfangselementen (10) Ausgangssignale An generieren, die unterhalb des Schwellwertes S1 liegen.
- Optoelektronische Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass ein Zwischenraum zwischen zwei Bögen (3) als erkannt gilt, falls eine Anzahl Nz von aufeinander folgenden, nicht belichteten Empfangselementen (10) registriert wird, die größer oder gleich einem Grenzwert Nz,min ist, wobei die Anzahl Nz der nicht belichteten Empfangselemente (10) ein Maß für die Breite eines Zwischenraumes liefert.
- Optoelektronische Vorrichtung nach einem der Ansprüche 5 - 8, dadurch gekennzeichnet, dass zu deren Referenzierung während einer oder der Einlernphase die Lage der Kante des Anlegetisches (2) ermittelt wird.
- Optoelektronische Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass der auf den Anlegetisch (2) auftreffende Teil der Sendelichtstrahlen (6) zum Empfänger (9) zurückreflektiert ist, wodurch wenigstens eine Anzahl Na,1 von aufeinander folgenden belichteten Empfangselementen (10) erhalten wird, dass durch den am Anlegetisch (2) vorbei geführten Anteil der Sendelichtstrahlen (6) wenigstens eine Anzahl Na,0 von aufeinander folgenden nicht belichteten Empfangselementen (10) erhalten wird, und dass der Übergangsbereich der belichteten zu den unbelichteten Empfangselementen (10) die Lage n0 der Oberkante des Anlegetisches (2) definiert.
- Optoelektronische Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Lage n0 der Oberkante des Anlegetisches (2) als erkannt gilt, falls die jeweils letzten der Na,1 belichteten Empfangselemente (10) und der Na,0 unbelichteten Empfangselemente (10), die an den Übergangsbereich angrenzen, weniger als Na,min Empfangselemente (10) voneinander getrennt liegen.
- Optoelektronische Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass das Zentrum des Übergangsbereichs die Lage n0 der Oberkante definiert.
- Optoelektronische Vorrichtung nach Anspruch 9 - 12, dadurch gekennzeichnet, dass durch Bezug auf die Lage n0 der Oberkante die Positionen der auf dem Anlegetisch (2) aufliegenden Bögen (3) bestimmbar sind.
- Optoelektronische Vorrichtung nach einem der Ansprüche 2 - 13, dadurch gekennzeichnet, dass zur Kompensation von Umwelteinflüssen der Referenzwert Nb,ref mittels eines I-Reglers den aktuellen Werten von Nb nachgeführt ist.
- Optoelektronische Vorrichtung nach einem der Ansprüche 1 - 14, dadurch gekennzeichnet, dass die Schwellwerte S1 und S2 zur Kompensation von Driften der Amplituden der Ausgangssignale An veränderbar sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10101443 | 2001-01-15 | ||
DE10101443A DE10101443B4 (de) | 2001-01-15 | 2001-01-15 | Verfahren zur Ermittlung eines Schnittbildes einer Objektstruktur |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1223132A2 true EP1223132A2 (de) | 2002-07-17 |
EP1223132A3 EP1223132A3 (de) | 2003-11-05 |
EP1223132B1 EP1223132B1 (de) | 2005-04-27 |
Family
ID=7670521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02000861A Expired - Lifetime EP1223132B1 (de) | 2001-01-15 | 2002-01-15 | Optoelektronische Vorrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1223132B1 (de) |
DE (2) | DE10101443B4 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2030924A1 (de) * | 2007-08-28 | 2009-03-04 | Müller Martini Holding AG | Einrichtung zum Verarbeiten von Druckprodukten |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004060040B3 (de) * | 2004-12-14 | 2006-06-14 | Richter, Uwe, Dr. | Vorrichtung zum Vereinzeln und Sortieren scheibenförmiger Substrate |
DE102005020977A1 (de) * | 2005-04-29 | 2006-11-02 | Holzma Plattenaufteiltechnik Gmbh | Abstapelungsvorrichtung zum Abstapeln plattenförmiger Werkstücke |
DE102016226168B4 (de) * | 2016-12-23 | 2019-03-21 | Koenig & Bauer Ag | Vorrichtung zur Überwachung des Bogenlaufs entlang einer Transportbahn |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56161244A (en) * | 1980-05-16 | 1981-12-11 | Fujitsu Ltd | Multiple feed detecting device |
DE4115841A1 (de) * | 1991-05-15 | 1992-11-19 | Schoelly Fiberoptic Gmbh | Vorrichtung zur optischen kontrolle von gegenstaenden |
DE19909518A1 (de) * | 1998-03-23 | 1999-10-07 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zur Erfassung der Lage von gestapeltem Material |
EP1041393A2 (de) * | 1999-04-01 | 2000-10-04 | Leuze electronic GmbH + Co. | Optoelektronische Vorrichtung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3825295C2 (de) * | 1988-07-26 | 1994-05-11 | Heidelberger Druckmasch Ag | Vorrichtung zur Erfassung der Position einer Papierkante |
DE10034072A1 (de) * | 1999-07-29 | 2001-03-01 | Heidelberger Druckmasch Ag | Anordnung zum Messen der Höhe eines Bogenstapels mit optischen Meßmitteln |
-
2001
- 2001-01-15 DE DE10101443A patent/DE10101443B4/de not_active Expired - Fee Related
-
2002
- 2002-01-15 EP EP02000861A patent/EP1223132B1/de not_active Expired - Lifetime
- 2002-01-15 DE DE50202873T patent/DE50202873D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56161244A (en) * | 1980-05-16 | 1981-12-11 | Fujitsu Ltd | Multiple feed detecting device |
DE4115841A1 (de) * | 1991-05-15 | 1992-11-19 | Schoelly Fiberoptic Gmbh | Vorrichtung zur optischen kontrolle von gegenstaenden |
DE19909518A1 (de) * | 1998-03-23 | 1999-10-07 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zur Erfassung der Lage von gestapeltem Material |
EP1041393A2 (de) * | 1999-04-01 | 2000-10-04 | Leuze electronic GmbH + Co. | Optoelektronische Vorrichtung |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 048 (M-119), 27. März 1982 (1982-03-27) -& JP 56 161244 A (FUJITSU LTD), 11. Dezember 1981 (1981-12-11) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2030924A1 (de) * | 2007-08-28 | 2009-03-04 | Müller Martini Holding AG | Einrichtung zum Verarbeiten von Druckprodukten |
Also Published As
Publication number | Publication date |
---|---|
EP1223132B1 (de) | 2005-04-27 |
DE50202873D1 (de) | 2005-06-02 |
DE10101443B4 (de) | 2006-04-06 |
DE10101443A1 (de) | 2002-07-25 |
EP1223132A3 (de) | 2003-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4405376C1 (de) | Verfahren zum Erfassen von Objekten in einem Überwachungsbereich | |
EP0316746B1 (de) | Optisches Lochsuchgerät | |
EP1816488B2 (de) | Optoelektronische Vorrichtung und Verfahren zu deren Betrieb | |
DE2535543C3 (de) | Vorrichtung zur Feststellung von Herstellungsfehlern in einer bewegten Materialbahn | |
DE69421643T2 (de) | Optische Prüfvorrichtung für die Füllung von Zigaretten | |
CH693468A5 (de) | Verfahren und Vorrichtung für die Detektion oder Lagebestimmung von Kanten. | |
EP0650911B1 (de) | Vorrichtung und Verfahren zum Erkennen von Überlappungen von biegbaren flachen Sendungen | |
DE10222797C5 (de) | Abstandsbestimmung | |
DE3602008C2 (de) | ||
DE4444079A1 (de) | Verfahren und Vorrichtung zur Durchführung dieses Verfahrens zum Messen einer Lage von Bahnen oder Bogen | |
DE102016114477A1 (de) | Fördervorrichtung | |
EP0716287A2 (de) | Verfahren und Vorrichtung zur Durchführung dieses Verfahrens zum Messen einer Lage von Bahnen oder Bogen | |
DE19914962C2 (de) | Optoelektronische Vorrichtung | |
DE2653298A1 (de) | Pruefvorrichtung zum pruefen der enden von zigaretten | |
EP1223132A2 (de) | Optoelektronische Vorrichtung | |
DE19852173C2 (de) | Lichttaster | |
DE102004003386C5 (de) | Optischer Sensor | |
EP1021293B1 (de) | Verfahren und vorrichtung zum prüfen einer breite einer materialbahn | |
DE102020104931B4 (de) | Verfahren und Vorrichtung zur Kantenerkennung eines Objekts | |
DE69705009T2 (de) | Verfahren zur Kontrolle der gefüllten Enden von Tabaksartikeln | |
DE20216042U1 (de) | Vorrichtung zur Erfassung der Kantenpositionen von Bögen in einer bogenverarbeitenden Maschine | |
EP1148352B1 (de) | Optischer Sensor | |
DE3408106C2 (de) | ||
EP1859227A2 (de) | Sensoranordnung zur optischen kantendetektierung einer ware und verfahren zur breitenmessung | |
EP1148353A2 (de) | Optischer Sensor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20020124 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17Q | First examination report despatched |
Effective date: 20040609 |
|
AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LEUZE ELECTRONIC GMBH + CO KG |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): BE CH DE FR GB IT LI NL |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI NL |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ROTTMANN, ZIMMERMANN + PARTNER AG Ref country code: CH Ref legal event code: EP |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20050427 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50202873 Country of ref document: DE Date of ref document: 20050602 Kind code of ref document: P |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20060130 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20090114 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090122 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090219 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20090127 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090115 Year of fee payment: 8 |
|
BERE | Be: lapsed |
Owner name: *LEUZE ELECTRONIC G.M.B.H. + CO. K.G. Effective date: 20100131 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20100801 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100115 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20100930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100201 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100115 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100115 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: LEUZE ELECTRONIC GMBH + CO. KG Free format text: LEUZE ELECTRONIC GMBH + CO. KG#IN DER BRAIKE 1#73277 OWEN/TECK (DE) -TRANSFER TO- LEUZE ELECTRONIC GMBH + CO. KG#IN DER BRAIKE 1#73277 OWEN/TECK (DE) |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130206 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20140121 Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50202873 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50202873 Country of ref document: DE Effective date: 20140801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140801 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 |