WO2010049038A1 - Reflection light barrier having measuring and/or localizing function - Google Patents

Reflection light barrier having measuring and/or localizing function Download PDF

Info

Publication number
WO2010049038A1
WO2010049038A1 PCT/EP2009/006697 EP2009006697W WO2010049038A1 WO 2010049038 A1 WO2010049038 A1 WO 2010049038A1 EP 2009006697 W EP2009006697 W EP 2009006697W WO 2010049038 A1 WO2010049038 A1 WO 2010049038A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
mirror
light sensors
reflectors
rotating
Prior art date
Application number
PCT/EP2009/006697
Other languages
German (de)
French (fr)
Inventor
Gilbert Egger
Original Assignee
I.L.E.E. Ag
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 I.L.E.E. Ag filed Critical I.L.E.E. Ag
Priority to EP09778557A priority Critical patent/EP2342587A1/en
Publication of WO2010049038A1 publication Critical patent/WO2010049038A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
    • G01V8/26—Detecting, e.g. by using light barriers using multiple transmitters or receivers using mechanical scanning systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates

Definitions

  • the invention relates to a simply constructed, area-wide reflection barrier with a surveying and localization function.
  • Known reflection circuits or barriers are, for example, light barriers, consisting of at least one light source and a receiver, which are also arranged several times next to each other and can selectively scan a portion of a surface / a room, for example, to determine the presence of a possible object within this scanned area can.
  • Such light barriers are known for example from DE 20 2007 005 710 U1.
  • An optical device operating on this basis for scanning the edge layer of webs of material is described in DD 36 936.
  • a photocell for scanning continuous goods as well as an acoustical signal transmitter controllable by a light barrier disclose CH 393 537 and CH 475 613.
  • a reflection light barrier for the optical detection of a small part is known from DE 20 2008 004 729 U1.
  • a device for the confocal illumination of a sample is treated in DE 10 2007 009 551 B3.
  • An area-wide measurement which also allows a measurement and / or localization of the object in space, can not be performed with such barriers, since, among other things, the cost is very high.
  • DE 199 22 614 A1 discloses a method and a device for the optical control of production processes of finely structured surfaces in semiconductor production.
  • DE 20 2005 020 705U1 deals with a device for measuring and / or processing three-dimensional objects by means of light beams as well as DE 10 2006 062 447 A1.
  • a scanner and a method for operating the scanner are the subject of DE 10 2005 002 190 B4.
  • DE 695 31 462 T2 (EP 0 875 728 B1) and DE 695 18 953 T2 (EP 0 689 032 B1), each of which describes a measuring system which differs from the prior art, are moving in the same technical direction. that, in addition to a rotating laser beam, once the reflective object transmits and diffuses the laser beam and, on the other hand, a position control device for controlling an emitting position of the laser beam is incorporated.
  • a rotating laser radiation system is also proposed in DE 694 1 1 102 T2 (EP 0 643 283 B1).
  • An opto-electronic scanner for scanning a protective field (room) is considered in more detail in DE 20 2007 00 327 U1, the scanner having an additional camera arrangement.
  • the scanner then initiates suitable protective measures in evaluation of its measurement results, if, for example, a person is detected.
  • the invention has the object to provide a device that allows in a simple manner not only the localization but also a measurement of an object in space and / or level.
  • the invention is based on the idea to provide a device which is structurally simple and allows easy retrofitting (assembly / disassembly) on site. It is fundamentally provided that at least one rotating light beam is reflected back by a catadioptric reflector into the starting position and guided via a further mirror to at least one light sensor.
  • the principle of retro-reflection is - -
  • the retro-reflection is the reflection in which the incident light is reflected back tightly focused to the respective light source. This type of reflection can be achieved with the help of a large number of very small catadioptric parts (eg half-glazed glass spheres).
  • Retro reflective fabrics include reflective tapes, reflective fabrics or even reflective paints, which show a normal supervisory color in daylight, but have the character of a reflective fabric when illuminated with artificial light.
  • Such films are known, inter alia, from CA 2 376 812 C 1 DE 10 2007 009 013 A1, DE 10 2007 006 405 A1 and DE 10 2004 025 325 A1.
  • a monitoring of a surveillance area with a reflector foil is also disclosed in DE 10 2006 046 152 A1.
  • the reflector film has a reflection layer, which stands in partial regions at an angle to the reflector film plane.
  • a device with a rotating light beam as a measuring device is integrated into an existing system, wherein the light beams are reflected back from the reflector into the starting position. If there is an object in this light beam, no reflection takes place and the light sensor (s) do not receive any reflected light. The number or range of the emergent rays gives the outer contours of the object.
  • At least two rotating light beams are placed so that position and location of the object can be determined.
  • the light sources are arranged so that their beam ranges overlap when scanning.
  • This barrier is used, among other things, wherever the detection of objects is also desired with respect to the location and location by simple means.
  • the choice of the protractor in accuracy and resolution and thus in terms of its price depends on the desired quality of the measurement. - -
  • FIG. 1 is a side view of a possible arrangement for monitoring in a production process (shown in simplified form),
  • FIG. 2 shows a generalized representation of the arrangement of at least two so-called light or laser scanners in the production process
  • Fig. 4 is an elevation of another variant.
  • a steel plate is indicated, from which, for example, squares 101 or circles 102 are cut out (for example by means of a laser). In some cases, however, these parts 101, 102 remain stuck, which leads to blocking or interrupting the further production process. Therefore, it is envisaged to arrange a device 110 here below the steel plate 100, which can perform a measurement in a monitoring area, whereby it can be determined whether there are still parts 101, 102 on the steel plate 100.
  • the device 110 to be incorporated consists of at least one radiation source 1, (2) and reflectors (3), 4, 5 and an adjustable mirror 10.
  • the reflectors (3), 4, 5 can be built in a lightweight form.
  • the radiation source 1 (2) and the mirror 10 deflecting the emitting beam are aligned therewith.
  • Two radiation sources 1, 2 are preferably arranged underneath the steel plate 100 in the front, side or rear region 104, wherein during a later rotation of the beams LS 1 , LS 2 , both beam fans pass over one another.
  • the radiation area is limited by the so-called catadioptric reflectors 3, 4, 5 at which the rotating light beams LS 1 and LS 2 can be reflected back in the output direction as light beams LS R1 , LS R2 .
  • the light beams LS 1 and LS 2 pass over a measuring range LM 1 and LM 2 .
  • FIG. 3 shows a first variant of a rotating beam LS 1 .
  • a Ls 1 is emitted and directed to an adjustable mirror 10. This can be converted via a drive 11 in combination with an angle sensor 12 to a rotating beam LS 1 .
  • the beam LS 1 is reflected at the reflectors 4, 5 as a light beam LS R1 and preferably via the same mirror 10 again in the direction of the light source 1 directed to the light sensors 13, 14 and sent back.
  • variant II has a beam splitter 15, via which the reflected light beams are directed onto or onto the light sensors 16, 17, for example two, arranged independently of the orientation of the light source 101.
  • each light source can be assigned its own rotating mirror as well as corresponding light sensors.

Abstract

The invention relates to a device (110) for reflecting a beam (LS1, LS2), such as a laser or light beam, having at least one beam source (1, 2) for monitoring a monitoring area for the presence of an object (101, 102), comprising one rotating mirror (10) for each beam source (1, 2), catadioptic reflectors (3, 4, 5), and light sensors (7, 8, 13, 14), wherein the beams (LS1, LS2) reflected back by the reflectors (3, 4, 5) impinge on the light sensors (7, 8, 13, 14) directly via the mirror (10) or via a further beam divider (15) between the mirror (10) and the light sensors (7, 8, 13, 14). The device (110) is characterized by simple retrofitting.

Description

W.OC.0736.WO/ DIE l 14. September 2009W.OC.0736.WO / DIE l 14th September 2009
BESCHREIBUNGDESCRIPTION
REFLEXIONSLICHTSCHRANKE MIT VERMESSUNGS- UND/ODER LOKALISIERUNGSFUNKTIONREFLECTION LIGHTER WITH MEASUREMENT AND / OR LOCALIZATION FUNCTION
Die Erfindung betrifft eine einfach aufgebaute, flächendeckende Reflexionsschranke mit einer Vermessungs- als auch Lokalisierungsfunktion.The invention relates to a simply constructed, area-wide reflection barrier with a surveying and localization function.
Bekannte Reflexionsschaltungen oder -schranken sind beispielsweise Lichtschranken, bestehend aus wenigstens einer Lichtquelle und einem Empfänger, die zudem mehrfach nebeneinander angeordnet sind und punktuell einen Teil einer Fläche / eines Raumes abtasten können, um zum Beispiels das Vorhandensein eines möglichen Gegenstandes innerhalb dieser abgetasteten Gegend bestimmten zu können. Derartige Lichtschranken sind beispielsweise aus der DE 20 2007 005 710 U1 bekannt. Eine auf dieser Basis arbeitende optische Vorrichtung zum Abtasten der Kantenlage von Materialbahnen wird in der DD 36 936 beschrieben. Eine Lichtschranke zum Abtasten durchlaufenden Gutes sowie einen durch eine Lichtschranke steuerbaren akustischen Signalgeber offenbaren die CH 393 537 sowie die CH 475 613.Known reflection circuits or barriers are, for example, light barriers, consisting of at least one light source and a receiver, which are also arranged several times next to each other and can selectively scan a portion of a surface / a room, for example, to determine the presence of a possible object within this scanned area can. Such light barriers are known for example from DE 20 2007 005 710 U1. An optical device operating on this basis for scanning the edge layer of webs of material is described in DD 36 936. A photocell for scanning continuous goods as well as an acoustical signal transmitter controllable by a light barrier disclose CH 393 537 and CH 475 613.
Eine Reflexionslichtschranke zum optischen Nachweisen eines Kleinteils ist aus der DE 20 2008 004 729 U1 bekannt. Eine Vorrichtung für die konfokale Beleuchtung einer Probe wird in der DE 10 2007 009 551 B3 behandelt.A reflection light barrier for the optical detection of a small part is known from DE 20 2008 004 729 U1. A device for the confocal illumination of a sample is treated in DE 10 2007 009 551 B3.
Eine flächendeckende Messung, die zudem eine Vermessung und / oder Lokalisierung des Gegenstandes im Raum ermöglicht, kann mit derartigen Schranken nicht durchgeführt werden, da unter anderem der Aufwand sehr hoch ist.An area-wide measurement, which also allows a measurement and / or localization of the object in space, can not be performed with such barriers, since, among other things, the cost is very high.
Mit der DE 199 22 614 A1 werden ein Verfahren und eine Vorrichtung zur optischen Kontrolle von Fertigungsprozessen fein strukturierter Oberflächen in der Halbleiterfertigung publiziert.DE 199 22 614 A1 discloses a method and a device for the optical control of production processes of finely structured surfaces in semiconductor production.
Die DE 20 2005 020 705U1 beschäftigt sich mit einer Vorrichtung zum Vermessen und / oder Bearbeiten von dreidimensionalen Objekten mittels Lichtstrahlen wie auch die DE 10 2006 062 447 A1. Ein Scanner und ein Verfahren zum Betreiben des Scanners sind Gegenstand der DE 10 2005 002 190 B4.DE 20 2005 020 705U1 deals with a device for measuring and / or processing three-dimensional objects by means of light beams as well as DE 10 2006 062 447 A1. A scanner and a method for operating the scanner are the subject of DE 10 2005 002 190 B4.
In die gleiche technische Richtung bewegen sich die DE 695 31 462 T2 (EP O 875 728 B1) sowie die DE 695 18 953 T2 (EP O 689 032 B1), die jeweils ein Vermessungssystem beschreiben, welche sich dadurch vom Stand der Technik unterscheiden, dass neben einem rotierenden Laserstrahl einmal das reflektierende Objekt den Laserstrahl durchlässt und diffus macht und zum anderen eine Positionssteuereinrichtung zum Steuern einer emittierenden Position des Laserstrahls eingebunden ist.DE 695 31 462 T2 (EP 0 875 728 B1) and DE 695 18 953 T2 (EP 0 689 032 B1), each of which describes a measuring system which differs from the prior art, are moving in the same technical direction. that, in addition to a rotating laser beam, once the reflective object transmits and diffuses the laser beam and, on the other hand, a position control device for controlling an emitting position of the laser beam is incorporated.
Ein rotierendes Laser-Strahlungssystem wird zudem in der DE 694 1 1 102 T2 (EP 0 643 283 B1) angedacht.A rotating laser radiation system is also proposed in DE 694 1 1 102 T2 (EP 0 643 283 B1).
Ein opto- elektronischer Scanner zum Abtasten eines Schutzfeldes (Raumes) wird in der DE 20 2007 00 327 U1 näher betrachtet, wobei der Scanner eine zusätzliche Kameraanordnung aufweist. Der Scanner leitet in Auswertung seiner Messergebnisse dann geeignete Schutzmaßnahmen ein, wenn beispielsweise eine Person detektiert wird.An opto-electronic scanner for scanning a protective field (room) is considered in more detail in DE 20 2007 00 327 U1, the scanner having an additional camera arrangement. The scanner then initiates suitable protective measures in evaluation of its measurement results, if, for example, a person is detected.
Die DE 10 2005 002 1879 B4 beansprucht eine Vorrichtung zum Ermitteln der Winkelposition eines Lichtstrahls und ein Verfahren zum Betreiben selbiger Vorrichtung.DE 10 2005 002 1879 B4 claims a device for determining the angular position of a light beam and a method for operating the same device.
Die vorgenannten Lösungen bzw. Lösungsansätze sind in ihrer Konstruktion teilweise sehr zumindest jedoch aufwändig.The aforementioned solutions or approaches are in their construction sometimes very, at least but consuming.
Hier stellt sich die Erfindung die Aufgabe, eine Vorrichtung anzugeben, die in einfacher Art und Weise nicht nur das Lokalisieren sondern auch ein Vermessen eines Objektes in Raum und / oder Ebene ermöglicht.Here, the invention has the object to provide a device that allows in a simple manner not only the localization but also a measurement of an object in space and / or level.
Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1. Unteransprüche enthalten bevorzugte Ausführungsformen.The object is achieved by the features of claim 1. Subclaims contain preferred embodiments.
Der Erfindung liegt die Idee zugrunde, eine Vorrichtung zu schaffen, die konstruktiv einfach ist und eine einfache Nachrüstung (Montage / Demontage) auch vor Ort ermöglicht. Grundlegend ist vorgesehen, dass zumindest ein rotierender Lichtstrahl von einem katadioptri- schen Reflektor in die Ausgangsstellung zurückgestrahlt und über einen weiteren Spiegel auf wenigstens einen Lichtsensor geleitet wird. Dabei wird das Prinzip der Retro- Reflektion an- - -The invention is based on the idea to provide a device which is structurally simple and allows easy retrofitting (assembly / disassembly) on site. It is fundamentally provided that at least one rotating light beam is reflected back by a catadioptric reflector into the starting position and guided via a further mirror to at least one light sensor. The principle of retro-reflection is - -
gewandt. Dieses Prinzip basiert darauf, dass spiegelnde und brechende Elemente (= katadi- oprische Elemente) das Licht umkehren und es in Richtung der Lichtquelle zurücksenden. Die Retro- Reflexion ist die Reflexion, bei der das auftreffende Licht eng gebündelt zur jeweils anleuchtenden Lichtquelle zurückgestrahlt wird. Erreicht werden kann diese Art der Reflexion mit Hilfe einer großen Anzahl sehr kleiner katadioptrischer Teile (z. B. halb ver- spiegelter Glaskugeln).looking. This principle is based on the fact that reflective and refractive elements (= catadiopic elements) reverse the light and send it back in the direction of the light source. The retro-reflection is the reflection in which the incident light is reflected back tightly focused to the respective light source. This type of reflection can be achieved with the help of a large number of very small catadioptric parts (eg half-glazed glass spheres).
Retro- reflektierende Stoffe sind u. a. Reflexfolien, Reflexgewebe oder auch Reflexfarben, die bei Tageslicht eine normale Aufsichtfarbe zeigen, bei Anleuchtung mit künstlichem Licht jedoch den Charakter eines Reflexstoffes aufweisen. Derartige Folien sind u. a. aus der CA 2 376 812 C1 DE 10 2007 009 013 A1 , DE 10 2007 006 405 A1 sowie DE 10 2004 025 325 A1 bekannt.Retro reflective fabrics include reflective tapes, reflective fabrics or even reflective paints, which show a normal supervisory color in daylight, but have the character of a reflective fabric when illuminated with artificial light. Such films are known, inter alia, from CA 2 376 812 C 1 DE 10 2007 009 013 A1, DE 10 2007 006 405 A1 and DE 10 2004 025 325 A1.
Eine Überwachung eines Überwachungsbereiches mit einer Reflektorfolie ist des Weiteren der DE 10 2006 046 152 A1 entnehmbar. Die Reflektorfolie weist eine Reflexionsschicht auf, die in Teilbereichen in einem Winkel zur Reflektorfolienebene steht.A monitoring of a surveillance area with a reflector foil is also disclosed in DE 10 2006 046 152 A1. The reflector film has a reflection layer, which stands in partial regions at an angle to the reflector film plane.
Aufbauend auf diese Funktionsweise wird erfindungsgemäß eine Vorrichtung mit einem rotierenden Lichtstrahl als Messeinrichtung in ein vorhandenes System eingebunden, wobei die Lichtstrahlen vom Reflektor in die Ausgangsstellung zurückgestrahlt werden. Befindet sich in diesem Lichtstrahl ein Objekt, erfolgt keine Reflektion und die (der) Lichtsensoren empfangen kein zurückgestrahltes Licht. Die Anzahl bzw. der Bereich der ausfallenden Strahlen ergibt die äußeren Umrisse des Gegenstandes.Based on this mode of operation according to the invention, a device with a rotating light beam as a measuring device is integrated into an existing system, wherein the light beams are reflected back from the reflector into the starting position. If there is an object in this light beam, no reflection takes place and the light sensor (s) do not receive any reflected light. The number or range of the emergent rays gives the outer contours of the object.
In einer bevorzugten Ausführung werden wenigstens zwei rotierende Lichtstrahlen so platziert, dass Lage und Ort des Gegenstandes bestimmbar sind. Dabei werden die Lichtquellen so angeordnet, dass sich deren Strahlenbereiche beim Abscannen überschneiden.In a preferred embodiment, at least two rotating light beams are placed so that position and location of the object can be determined. The light sources are arranged so that their beam ranges overlap when scanning.
Der mit dieser Idee verbundene Vorteil liegt in einer genaueren sowie schnelleren Messung des Vorhandenseins eines Objektes als auch dessen örtlicher Lage, wobei auch ein gewünschter mobiler Einsatz dieser Vorrichtung als so genannte Reflexionslichtschranke möglich ist.The advantage associated with this idea is a more accurate and faster measurement of the presence of an object as well as its location, with a desired mobile use of this device as a so-called reflection light barrier is possible.
Verwendung findet diese Schranke u. a. überall dort, wo das Erfassen von Objekten auch bezüglich der Lage und Ort mit einfachen Mitteln erwünscht wird. Die Wahl des Winkelmessers in Genauigkeit und Auflösung und damit in Hinblick auf seinen Preis ist abhängig von der gewünschten Qualität der Messung. - -This barrier is used, among other things, wherever the detection of objects is also desired with respect to the location and location by simple means. The choice of the protractor in accuracy and resolution and thus in terms of its price depends on the desired quality of the measurement. - -
Anhand eines Ausführungsbeispiels mit Zeichnung soll die Erfindung näher erläutert werden.Reference to an embodiment with drawing, the invention will be explained in more detail.
Es zeigt:It shows:
Fig. 1 in einer Seitendarstellung eine mögliche Anordnung für eine Überwachung in einem Produktionsprozess (vereinfacht dargestellt),1 is a side view of a possible arrangement for monitoring in a production process (shown in simplified form),
Fig. 2 eine verallgemeinerte Darstellung der Anordnung wenigsten zweier so genannter Licht- oder Laserscanner im Produktionsprozess,2 shows a generalized representation of the arrangement of at least two so-called light or laser scanners in the production process,
Fig. 3 einen Aufriss einer ersten Variante,3 is an elevation of a first variant,
Fig. 4 einen Aufriss einer weiteren Variante.Fig. 4 is an elevation of another variant.
Mit 100 ist beispielsweise eine Stahlplatte gekennzeichnet, aus welcher beispielsweise Quadrate 101 oder Kreise 102 herausgetrennt werden (beispielsweise mittels Laser). In einigen Fällen bleiben diese Teile 101 , 102 jedoch hängen, was zum Blockieren bzw. Unterbrechen des weiteren Produktionsablaufs führt. Daher ist vorgesehen, eine Vorrichtung 110 hier unterhalb der Stahlplatte 100 anzuordnen, die ein Vermessen in einem Überwachungsbereich vornehmen kann, wodurch bestimmt werden kann, ob sich noch Teile 101 , 102 an der Stahlplatte 100 befinden.By 100, for example, a steel plate is indicated, from which, for example, squares 101 or circles 102 are cut out (for example by means of a laser). In some cases, however, these parts 101, 102 remain stuck, which leads to blocking or interrupting the further production process. Therefore, it is envisaged to arrange a device 110 here below the steel plate 100, which can perform a measurement in a monitoring area, whereby it can be determined whether there are still parts 101, 102 on the steel plate 100.
Die einzubindende Vorrichtung 110 besteht dabei aus wenigstens einer Strahlenquelle 1 , (2) sowie Reflektoren (3), 4, 5 und einem verstellbaren Spiegel 10. Die Reflektoren (3), 4, 5 sind in leichter Form aufbaubar. Auf diese ausgerichtet werden die Strahlenquelle 1 (2) und der den aussendenden Strahl ablenkende Spiegel 10.The device 110 to be incorporated consists of at least one radiation source 1, (2) and reflectors (3), 4, 5 and an adjustable mirror 10. The reflectors (3), 4, 5 can be built in a lightweight form. The radiation source 1 (2) and the mirror 10 deflecting the emitting beam are aligned therewith.
Bevorzugt werden zwei Strahlenquellen 1 , 2 (Lichtquelle, Laser) unterhalb der Stahlplatte 100 im vorderen, seitlichen oder hinteren Bereich 104 angeordnet, wobei sich bei einer späteren Rotation der Strahlen LS1, LS2, beide Strahlenfächer überstreichen. Begrenzt wird der Strahlenbereich durch die so genannten katadioptrischen Reflektoren 3, 4, 5 an denen die rotierenden Lichtstrahlen LS1 und LS2 in die Ausgangsrichtung als Lichtstrahlen LSR1, LSR2 zurückgestrahlt werden können. Die Lichtstrahlen LS1 und LS2 überstreichen einen Messbereich LM1 sowie LM2. Treffen die Lichtstrahlen LS1 und LS2 auf ein Objekt 101 , 102, ergibt sich in diesem Messbereich ein Winkelsegment W1 bzw. W2, in dem keine Reflektion erfolgt, wodurch die Lichtsensoren 7, 8 (Fig. 3, Fig. 4) keinen Lichtstrahl empfangen. Aus dieser Information kann dann durch eine nicht näher dargestellte Auswerteelektronik ein Objektgrö- ßenwinkel OGW1 sowie OGW2 und ein Objektlagewinkel OLW1 und OLW2 aus den Übergängen hell/ dunkel, dunkel / dunkel sowie dunkel/ hell ermittelt werden. Diese Information wird dann in Weiterführung die genaue Lage und Größe der Objekte 101 , 102 (hier in einer Ebene unterhalb der Stahlfläche) bestimmt werden (Fig.2).Two radiation sources 1, 2 (light source, laser) are preferably arranged underneath the steel plate 100 in the front, side or rear region 104, wherein during a later rotation of the beams LS 1 , LS 2 , both beam fans pass over one another. The radiation area is limited by the so-called catadioptric reflectors 3, 4, 5 at which the rotating light beams LS 1 and LS 2 can be reflected back in the output direction as light beams LS R1 , LS R2 . The light beams LS 1 and LS 2 pass over a measuring range LM 1 and LM 2 . If the light beams LS 1 and LS 2 strike an object 101, 102, an angular segment W 1 or W 2 results in this measuring range in which no reflection takes place, as a result of which the light sensors 7, 8 (FIGS. 3, 4) receive no light beam. From this information can then be determined by an evaluation, not shown, a Objektgrö- OGW 1 and OGW 2 and an object angle OLW 1 and OLW 2 from the transitions light / dark, dark / dark and dark / light are determined. This information will then be determined in continuation the exact location and size of the objects 101, 102 (here in a plane below the steel surface) (Figure 2).
In Fig. 3 ist eine erste Variante eines rotierenden Strahls LS1 dargestellt. Von der Lichtquelle 1 wird ein Ls1 ausgesandt und auf einen verstellbaren Spiegel 10 gerichtet. Dieser kann über einen Antrieb 11 in Kombination mit einem Winkelsensor 12 zu einem rotierenden Strahl LS1 umgewandelt werden. Der Strahl LS1 wird an den Reflektoren 4, 5 als Lichtstrahl LSR1 reflektiert und vorzugsweise über denselben Spiegel 10 wieder in Richtung der Lichtquelle 1 auf die Lichtsensoren 13, 14 gelenkt bzw. zurückgesandt.FIG. 3 shows a first variant of a rotating beam LS 1 . From the light source 1, a Ls 1 is emitted and directed to an adjustable mirror 10. This can be converted via a drive 11 in combination with an angle sensor 12 to a rotating beam LS 1 . The beam LS 1 is reflected at the reflectors 4, 5 as a light beam LS R1 and preferably via the same mirror 10 again in the direction of the light source 1 directed to the light sensors 13, 14 and sent back.
Fig. 4 zeigt eine weitere Variante. Entgegen der Variante I weist die Variante Il einen Strahlenteiler 15 auf, über welchen die reflektierten Lichtstrahlen an bzw. auf die unabhängig von der Ausrichtung der Lichtquelle 101 angeordneten Lichtsensoren 16, 17, beispielsweise zwei, gelenkt werden.Fig. 4 shows a further variant. Contrary to variant I, variant II has a beam splitter 15, via which the reflected light beams are directed onto or onto the light sensors 16, 17, for example two, arranged independently of the orientation of the light source 101.
Beide Varianten sind auch für die weiteren Lichtquellen 2 (n) zu berücksichtigen, so dass jeder Lichtquelle ein eigener rotierender Spiegel sowie entsprechende Lichtsensoren zuzuordnen sind. Both variants are also to be considered for the further light sources 2 (n), so that each light source can be assigned its own rotating mirror as well as corresponding light sensors.

Claims

- -PATENTANSPRUCHE - PATENT CLAIMS
1. Vorrichtung (110) zur Reflexion eines Strahles (LS1, LS2) , wie Laser- oder Lichtstrahl, mit wenigstens einer Strahlenquelle (1 , 2) zur Überwachung eines Überwachungsbereiches auf das Vorhandensein eines Objektes (101 , 102) , umfassendA device (110) for reflecting a beam (LS 1 , LS 2 ), such as laser or light beam, comprising at least one radiation source (1, 2) for monitoring a surveillance area for the presence of an object (101, 102)
• einen rotierenden Spiegel (10) je Strahlenquelle (1 , 2),A rotating mirror (10) per radiation source (1, 2),
• katadioptische Reflektoren (3, 4, 5), sowie• catadioptic reflectors (3, 4, 5), as well
• Lichtsensoren (5, 6, 13, 14),Light sensors (5, 6, 13, 14),
• wobei die von den Reflektoren (3, 4, 5) zurück gelenkten Strahlen (LSR1, LSR2) über den Spiegel (10) direkt oder über einen weiteren Strahlenteiler (15) zwischen dem Spiegel (10) und den Lichtsensoren (7, 8, 13, 14) auf die Lichtsensoren (7, 8, 13, 14) gelangen.Wherein the beams (LS R1 , LS R2 ) guided back by the reflectors (3, 4, 5) are conveyed , via the mirror (10), directly or via a further beam splitter (15) between the mirror (10) and the light sensors (7, 8, 13, 14) reach the light sensors (7, 8, 13, 14).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der rotierende Spiegel (10) über einen Antrieb (1 1) in Kombination mit einem Winkelsensor (12) verfügt.2. Apparatus according to claim 1, characterized in that the rotating mirror (10) via a drive (1 1) in combination with an angle sensor (12) has.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der rotierende Lichtstrahl (LS1, LS2 ) der Strahlenquelle (1 , 2) einen Messbereich (LM1 , LM2) überstreicht, wobei, wenn sich ein Objekt (101 , 102) im Strahlengang befindet, sich in diesem Messbereich (LM1 , LM2) ein Winkelsegment (W1, W2) ergibt, in dem keine Re- flektion erfolgt, wodurch die Lichtsensoren (7, 8, 13, 14) keinen Lichtstrahl (LSR1 l LSR2) empfangen.3. Apparatus according to claim 1 or 2, characterized in that the rotating light beam (LS 1 , LS 2 ) of the radiation source (1, 2) passes over a measuring range (LM1, LM2), wherein, when an object (101, 102) is in the beam path, in this measuring range (LM1, LM2) results in an angle segment (W 1 , W 2 ), in which no reflection takes place, whereby the light sensors (7, 8, 13, 14) no light beam (LS R1 l LS R2 ).
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zwei Strahlenquellen (1 , 2) verwendet werden.4. Device according to one of claims 1 to 3, characterized in that two radiation sources (1, 2) are used.
5. Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 4 unterhalb oder oberhalb einer Platte (100).5. Use of the device according to one of claims 1 to 4 below or above a plate (100).
6. Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 4 zum Erfassen von Objekten auch bezüglich der Lage und des Ortes mit einfachen Mitteln. 6. Use of the device according to one of claims 1 to 4 for detecting objects also with respect to the location and the place with simple means.
PCT/EP2009/006697 2008-10-30 2009-09-16 Reflection light barrier having measuring and/or localizing function WO2010049038A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09778557A EP2342587A1 (en) 2008-10-30 2009-09-16 Reflection light barrier having measuring and/or localizing function

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008053881A DE102008053881A1 (en) 2008-10-30 2008-10-30 Reflection barrier with surveying and / or localization function
DE102008053881.7 2008-10-30

Publications (1)

Publication Number Publication Date
WO2010049038A1 true WO2010049038A1 (en) 2010-05-06

Family

ID=41426335

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/006697 WO2010049038A1 (en) 2008-10-30 2009-09-16 Reflection light barrier having measuring and/or localizing function

Country Status (3)

Country Link
EP (1) EP2342587A1 (en)
DE (1) DE102008053881A1 (en)
WO (1) WO2010049038A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016146A1 (en) 2009-04-03 2010-10-07 I.L.E.E. Ag Industrial Laser And Electronic Engineering Device for monitoring a surveillance area for the presence of one or more objects
DE102010054130A1 (en) 2010-12-10 2012-06-14 Rheinmetall Waffe Munition Gmbh Protective equipment for security forces
DE102010054131A1 (en) 2010-12-10 2012-06-14 Rheinmetall Waffe Munition Gmbh Passive self-protection for vehicles, in particular for flying objects, and objects with at least one window

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2532602A1 (en) * 1975-07-21 1977-01-27 Sick Optik Elektronik Erwin OPTICAL DEVICE FOR WIDENING A LIGHT CURTAIN
DE2550653A1 (en) * 1975-11-11 1977-05-12 Sick Optik Elektronik Erwin ROTATING BEAM LIGHT CURTAIN
US4239961A (en) * 1979-01-23 1980-12-16 Theodore Lasar Photoelectric light curtain using retroreflector
DE2927845A1 (en) * 1979-07-10 1981-01-22 Sick Optik Elektronik Erwin A CURRENT LIGHT CURTAIN
DE3532197A1 (en) * 1985-09-10 1987-03-12 Leuze Electronic Gmbh & Co Light curtain
DE3606594A1 (en) * 1986-02-28 1987-09-03 Sick Optik Elektronik Erwin Accident protection light curtain
WO1995007471A1 (en) * 1993-09-07 1995-03-16 Laserscore, Inc. Method and apparatus for detecting the presence and location of an object in a field

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD36936A (en)
DE1185956B (en) 1961-11-02 1965-01-21 Weitmann & Konrad Light-sensitive device for scanning goods passing through
GB1160496A (en) 1967-03-08 1969-08-06 Truck And Car Company Propriet A Photosensitively Triggered Sound Producing Apparatus.
US5612781A (en) 1993-09-09 1997-03-18 Kabushiki Kaisha Topcon Object reflector detection system
JP3512469B2 (en) 1994-06-21 2004-03-29 株式会社トプコン Surveying equipment
US6017125A (en) * 1997-09-12 2000-01-25 The Regents Of The University Of California Bar coded retroreflective target
DE19922614A1 (en) 1998-12-04 2000-06-15 Fraunhofer Ges Forschung Method to control manufacturing processes of fine structure surfaces in semiconductor manufacturing; involves comparing signatures obtained from diffraction image with references for reference surfaces
JP4043128B2 (en) * 1999-02-24 2008-02-06 富士通株式会社 Optical scanning touch panel
US6417966B1 (en) 1999-07-07 2002-07-09 3M Innovative Properties Company Rear projection screen using internal reflection
DE10209269C1 (en) * 2002-03-01 2003-07-03 Leuze Electronic Gmbh & Co Optoelectronic device for detecting barcode markings has receiver enclosed by light shield with channel structure allowing passage of light reflected by beam deflection device
DE102004025325A1 (en) 2004-05-19 2005-12-08 Erich Utsch Ag Retroreflecting sheet for vehicle license plate, has reflection layer sections directly applied to the surface of transparent balls so that balls are part-reflective
DE102005002190B4 (en) 2005-01-17 2007-04-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Scanner and method for operating a scanner
DE202005020705U1 (en) 2005-01-27 2006-06-14 SOLITON Laser- und Meßtechnik GmbH Device for measuring or processing of objects with three-dimensional structure has object or reference level, which is provided, on which object that is to be measured or to be processed can be positioned
DE102006046152A1 (en) 2006-09-28 2008-04-03 Sick Ag Monitoring device for monitoring area, has light sensitive receiving device and light sources for illuminating monitoring area, where partial areas of monitoring area are provided with reflection foil
DE102006062447B4 (en) 2006-12-28 2009-08-20 Chronos Vision Gmbh Method and device for detecting the three-dimensional surface of an object, in particular a vehicle tire
DE202007000327U1 (en) 2007-01-10 2007-04-12 Sick Ag Opto-electric scanner uses light transmitter whose beam is controlled so that its angle increases and photoreceptor which detects objects in area being scanned, digital camera detecting orientation of zone protected by scanner
DE102007006405B4 (en) 2007-02-05 2012-02-16 Imos Gubela Gmbh Reflector with a trapezoidal reflection and method for fine light scanning to detect an object
DE102007009013A1 (en) 2007-02-23 2008-08-28 Osram Gesellschaft mit beschränkter Haftung Reflector has retroreflector and filter unit upstream of retroreflector, which is permeable to light within certain wavelength area and is non-permeable to light of other wavelength area
DE102007009551B3 (en) 2007-02-27 2008-08-21 Ludwig-Maximilian-Universität Device for the confocal illumination of a sample
DE202007005710U1 (en) 2007-04-16 2008-08-28 Balluff Gmbh Photointerrupter
DE202008004729U1 (en) 2008-04-07 2008-07-10 Pepperl + Fuchs Gmbh Reflection light barrier for optical detection of a small part

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2532602A1 (en) * 1975-07-21 1977-01-27 Sick Optik Elektronik Erwin OPTICAL DEVICE FOR WIDENING A LIGHT CURTAIN
DE2550653A1 (en) * 1975-11-11 1977-05-12 Sick Optik Elektronik Erwin ROTATING BEAM LIGHT CURTAIN
US4239961A (en) * 1979-01-23 1980-12-16 Theodore Lasar Photoelectric light curtain using retroreflector
DE2927845A1 (en) * 1979-07-10 1981-01-22 Sick Optik Elektronik Erwin A CURRENT LIGHT CURTAIN
DE3532197A1 (en) * 1985-09-10 1987-03-12 Leuze Electronic Gmbh & Co Light curtain
DE3606594A1 (en) * 1986-02-28 1987-09-03 Sick Optik Elektronik Erwin Accident protection light curtain
WO1995007471A1 (en) * 1993-09-07 1995-03-16 Laserscore, Inc. Method and apparatus for detecting the presence and location of an object in a field

Also Published As

Publication number Publication date
EP2342587A1 (en) 2011-07-13
DE102008053881A1 (en) 2010-05-12

Similar Documents

Publication Publication Date Title
DE3515194C2 (en)
EP0932816B1 (en) Method and device for measuring the course of reflective surfaces
DE19960653B4 (en) Method and device for the detection or orientation of edges
EP2597451B1 (en) Method and apparatus for the visualisation of signature on a spectacle lens
DE2256736B2 (en) Measuring arrangement for the automatic testing of the surface quality and evenness of a workpiece surface
DE19717488A1 (en) Device for inspecting the surface of an object for the purpose of determining surface features and method for such an inspection
EP1355128A1 (en) Automatic alignment of a sensor
EP0212052A2 (en) Device for measurement of wheels of wheel sets integrated in the vehicle
DE10146692B4 (en) Distance image sensor
DE10328537B4 (en) Apparatus and method for measuring the dimension of a body
DE2428123A1 (en) ARRANGEMENT FOR DETECTION OF DEFECTS BY SCANNING BY A LASER BEAM
EP1646855A1 (en) Method and device for visualizing a mark on a spectacle lens
DE60224623T2 (en) Wall thickness measurement of a transparent container with a light fan
EP0152894B1 (en) Device for optically detecting local inhomogeneities in the structure of tested objects
DE102011078833A1 (en) Method of detecting mark on transparent object e.g. ophthalmic lens, involves directing the light beams reflected by imaging beam deflection and retro-reflective surface of retro-reflector surface, against each other for preset time
DE10239765A1 (en) Profiltiefenmeßvorrichtung
EP2342587A1 (en) Reflection light barrier having measuring and/or localizing function
DE202009015194U1 (en) security scanners
DE102011001289B4 (en) Device for optical detection of test objects
DE1135201B (en) Control device for the detection of foreign bodies in a translucent container with means for illuminating a zone of the container to be controlled
WO2016071078A2 (en) Measurement of the topography and/or the gradient and/or the curvature of a light-reflecting surface of a spectacle lens
DE102016112405B3 (en) Zählscheibenvorrichtung
DE3232885A1 (en) METHOD FOR AUTOMATICALLY INSPECTING SURFACES
EP2382493B1 (en) Device and method for non-contacting measurement of a distance and/or profile
EP2703773B1 (en) Sensor for detecting a moving strip

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09778557

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009778557

Country of ref document: EP