EP3452300A1 - Dispositif pour concevoir et détecter des éléments de sécurité sur la surface d'une pièce ou dans une pièce et système pour détecter ces éléments de sécurité - Google Patents

Dispositif pour concevoir et détecter des éléments de sécurité sur la surface d'une pièce ou dans une pièce et système pour détecter ces éléments de sécurité

Info

Publication number
EP3452300A1
EP3452300A1 EP17721583.7A EP17721583A EP3452300A1 EP 3452300 A1 EP3452300 A1 EP 3452300A1 EP 17721583 A EP17721583 A EP 17721583A EP 3452300 A1 EP3452300 A1 EP 3452300A1
Authority
EP
European Patent Office
Prior art keywords
component
magnetic
security element
security
detected
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.)
Pending
Application number
EP17721583.7A
Other languages
German (de)
English (en)
Inventor
René SIEBERT
Robert Baumann
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Technische Universitaet Dresden
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Technische Universitaet Dresden
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV, Technische Universitaet Dresden filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP3452300A1 publication Critical patent/EP3452300A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/95—Pattern authentication; Markers therefor; Forgery detection
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/12—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by magnetic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors
    • G06K7/088—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors using magneto-sensitive switches, e.g. reed-switches

Definitions

  • the invention relates to a method for the formation and detection of security elements on the surface of a component or in a component, and to a system for detecting the security element.
  • Security features on or in products that prove the authenticity are used to protect against counterfeiting and the unauthorized reproduction of a manufacturer's products. Such security features can also be used for product tracking in production or for documentation of the life cycle of the component, in particular for safety-relevant spare parts.
  • structures or security elements can be created on the surface of a component or incorporated within a component become.
  • simple structures in the form of a bar code or the like can be applied.
  • EP 1 500 521 A2 describes security elements with machine-readable
  • the security feature is machine-readable and preferably magnetically coded.
  • This magnetic feature is created by, for example, printing a resist layer containing magnetic particles on a film and overprinting it with additional white, colored or luminescent varnishes.
  • this security elements are provided that contain machine-readable features and are not visible to the naked eye, but this is always a slide needed.
  • These films are usually used on value documents, on data carriers, on banknotes or special seals and ID cards. Thus, the production of these films does not take place at the said manufacturer of the products, which gives him the opportunity is taken to create own structures and pictures. Since these films are produced in large quantities, there can be no product-specific labeling for product tracking, as this would have to be integrated into the manufacturing process of the manufacturer.
  • RFID radio-frequency identification
  • a disadvantage of the known methods and security elements is that their positioning on the component is recognizable and the security elements can be imitated, since they can be perceived with the naked eye.
  • films or security elements which are introduced into the component or applied to the component, additional considerable effort in the production of the products and the manufacturer lacks the possibility of customization of product-specific security elements.
  • a component of a magnetic, in particular a ferromagnetic or ferrimagnetic material is formed.
  • the component is formed from a non-magnetic, in particular a non-ferromagnetic material, and on the surface of the component or in the interior of the component, a layer or a region of a magnetic material or of a material different from the component material is formed.
  • a security element is placed on or on the surface of the component or in the
  • At least one removal lane, at least one heat-affected region and / or at least one remelted treatment lane is / are formed by a locally and geometrically defined material removal or energy input on / on the surface of a component along a predetermined contour corresponding to the respective security feature.
  • a magnetic material differing from the material of the component is introduced into the component at at least one predetermined position.
  • At least one magnetic field penetrating into the component is generated by means of a magnetization unit and / or a magnetic flux is generated in the magnetization unit, which penetrates into the component.
  • the magnetic stray fields occurring on the security element as a result of the at least one magnetic field are detected by a detection unit, and the measurement signals detected by the detection unit are transmitted to an evaluation unit having an image processing or pattern recognition system.
  • the removal of material and / or an energy input can be effected by a nen energy beam, preferably by a laser, electron or ion beam can be achieved.
  • the at least one removal track can advantageously should be filled at least partially with a material that differs from the component material, preferably a non-magnetic material.
  • a powdery or viscous material which is preferably at least partially sintered or fused together as a result of a heat treatment, can be used.
  • the heat treatment can be carried out in an oven or with an energy beam, preferably with the previously used energy beam.
  • the removal track can also be a paste in which, for example, particles of metal, oxide, carbide, nitride and / or a polymer is / are incorporated.
  • a system with which the method according to the invention can be carried out has a magnetization unit with which at least in the region of the component in which a security feature has been formed, a magnetization of a magnetic material present there can be achieved, a detection unit for detecting components generated in the component magnetic stray fields, and an evaluation unit with image processing or pattern recognition system for the evaluation or detection of the detected magnetic stray fields, and for checking whether the detected measurement signals agree with a specification for a security feature or not on.
  • the focal spot of a laser beam may be moved over the component to form a security element at a feed rate in the range of 0.1 m / s to 22 m / min.
  • the selected laser power may preferably be in the range of 50 W to 5000 W.
  • the diameter of the focal spot in the focal plane should be in the range of 10 ⁇ to 1000 ⁇ .
  • a suitable wavelength of a solid-state laser used can be 0.34 ⁇ to 10.6 ⁇ .
  • the geometry of the removal and thus of the security feature to be formed can be influenced.
  • a heat-affected area can be formed in the area around the actual removal track in which the micromagnetic structure of the material changes.
  • a component is produced by means of a generative manufacturing process. During the process, a further material is locally and geometrically defined introduced into the component and / or recesses are formed in the component.
  • An introduced into the component further material should be formed of a non-magnetic material or a different material of the component magnetic material.
  • a magnetic material may, for example, be an iron alloy in which at least one of the following chemical elements is present besides iron: cobalt, nickel, chromium and manganese, silicon and aluminum.
  • the further material can be introduced into the component in powder form with a particle diameter of not more than 100 ⁇ m, preferably of not more than 20 ⁇ m.
  • the other material can be heated to above its melting point and the particles are fused together.
  • Powdered material can also be covered with a cover layer if it has been introduced into a removal track.
  • Machine-readable one-, two- or quasi-three-dimensional information such as barcodes or matrix codes, can be formed on the security element.
  • magnetic fields penetrating into the component are generated by means of a magnetization unit.
  • the stray fields forming thereby are detected by a detection unit and sent to an evaluation unit with image processing or pattern recognition system transmitted.
  • the evaluation unit with image processing or pattern recognition system determines the security element from the detected stray magnetic fields.
  • a graphic representation of the detected security element or a statement as to whether this security element coincides with a specification can be transmitted to a display device connected to the evaluation unit.
  • a security element formed in the method according to the invention can be designed as part of a product and / or company code visible to the naked eye. Alternatively or at the same time, without additional aids, it should not be visible to the naked eye and / or feel tactile. It can not be detected without a suitable detection system. Thus, the position of the feature on the component and also the security element as such remains hidden, and thus can not be easily imitated.
  • a cover layer in particular as a lacquer or as an insulating layer, can additionally be applied to the component surface and thus also to the security element. This should not have any influence on the magnetization changed in the area of the security feature during the development of the security feature, and preferably should not be optically opaque.
  • a cover layer should be used if, for example, a material removal with an energy beam has been locally and geometrically defined, in which at least one recess has been formed in the surface of a component, and the at least one recess at least partially with a magnetic material, in a non-magnetic component material , or a different magnetic material in a magnetic component material, is filled.
  • a system for use in the method according to the invention is composed of a magnetization unit, a detection unit, an evaluation unit formed with image processing or pattern recognition system and possibly a connected to the evaluation unit display device.
  • magnetic fields are introduced into the component, so that magnetic stray fields form on and around the security element. This can be achieved by the induction of magnetic flux into the device or by means of static magnetic fields.
  • the detection unit detects the stray magnetic fields forming in the component and transmits them to the evaluation unit.
  • the detection unit may comprise a magneto-optical sensor used together with an additional magnetic layer having high anisotropy, e.g. in DE 40 21 359 AI is described as a Kerr microscope, or contain at least one spatially resolved detecting inductive or capacitive sensor.
  • a resolution in the range of 5 ⁇ to 100 ⁇ , preferably in the range of 5 ⁇ to 25 ⁇ can be achieved.
  • the evaluation unit with image processing or pattern recognition system evaluates the generated magnetic stray fields and determines therefrom a graphical representation of the security element formed in the component or on its surface or a statement as to whether a detected security element coincides with a specification or not.
  • the determined graphical representation of the security element or the statement about the compliance with a specification can be transmitted to the display device.
  • the detection unit can be designed such that it examines the security element to be tested in subareas. In this way it is possible to terminate the examination if a deviation from a predetermined security element has already been detected by the evaluation unit in the first subregions.
  • hidden company- and product-specific security features for protection against product piracy can be designed and detected as a certificate of authenticity or for the documentation and control of production processes. In this case, a detection is only in knowledge of the position of the security element in the component or on his
  • Figure 1 is a schematic representation of the embodiment of an exemplary
  • FIG. 2 shows possible design variants of the method for producing a security element according to the invention
  • FIG. 3 shows by way of example the detection of security features
  • Figure 4 is a prince representation of the application of an exemplary
  • Figure 5 is a schematic representation of the formation of an exemplary
  • FIG. 1 shows a basic illustration of the configuration of an exemplary security element S on a surface 1a of a component 1.
  • the component is formed from an unalloyed structural steel for parts in general machine and vehicle construction C40E (material number 1.1186).
  • C40E material number 1.1186.
  • a laser beam 3 with a feed rate of the focal spot of 1 m / s, a power of 100 W and a focus diameter of 29 ⁇ m a geometrically and locally defined material removal 4 in the form of a logo in the component 1 was achieved after 3 irradiation processes.
  • the focal spot was thus moved three times along the contour of the security feature S.
  • the removal track 2 had a depth of 25 ⁇ and a width of 50 ⁇ .
  • the heat-affected area 6 had a width of 50 ⁇ m next to the removal track 2.
  • FIG. 2 shows basic design variants of the method for producing a security element S according to the invention on the surface 1a of a component 1.
  • a treatment track 5 was melted locally on the surface 1a of the component 1 by means of a laser beam 3 and geometrically defined, which subsequently solidified again, ie was remelted.
  • a heat-affected area 6 formed in the area of the treatment track 5, a heat-affected area 6 formed. Due to the thermal treatment was the micromagnetic
  • Structure of the component material changed both in the treatment track 5 and in the heat-affected area 6. This change can be detected in the detection of the security element S and the evaluation of the forming in the component 1 magnetic stray fields and visualized on a display device.
  • the shape and depth of the treatment track 5 and of the heat-affected area 6 were varied in comparison to design variant A by varying the parameters of the laser beam 3.
  • Focal spot not changed reduces the number of irradiation processes, increases the power used and / or increases the feed rate of the focal spot of the energy beam. Such variations can specifically influence the design of the security element S.
  • Embodiment variant D shows how the geometry of the removal track 2, the treatment track 5 and the heat-affected area 6 can be achieved in comparison to the embodiment variant A by changing the process parameters of the laser beam 3.
  • the procedure is as follows: The number of irradiation processes is increased while the area of the focal spot is unchanged, the power used is increased and / or the feed rate is increased.
  • design variant E in such a thermal treatment, the surface tension state of the molten material can be exploited so that a re-solidified in cross-section triangular track is formed.
  • This can be achieved by proceeding as follows with respect to design variant A: The number of irradiation processes is increased while the area of the focal spot is unchanged, the power used is reduced and / or the feed rate of the focal spot movement of the energy beam is lowered.
  • FIG. 3A schematically shows the measuring principle for the detection of a magnetically active security element S which, by means of the embodiment variant C of FIG. 2, is formed by a track formed by means of a laser beam 3.
  • a magnetic flux 8 is induced in the component 1 in the region to be examined 10a, this strikes the area of the removed material in the area of the removal track 2 and at the interface of material and air potentials with a corresponding magnetic structure are formed, which in turn become unidirectional , lead out of locally limited magnetic poles 9 outgoing magnetic stray fields 7.
  • the component 1 can alternatively be magnetized by means of static magnetic fields.
  • the vertical field component of the magnetic stray fields 7 can be detected using a detection unit 10, and transmitted by an evaluation unit a graphical representation 11 to a display device become.
  • An alternative to the detection of the vertical field component of the magnetic stray fields 7 is the determination of the magnetic structure in the region of the magnetic poles 9.
  • FIG. 3B shows a variant in which alternating magnetic fields enter the component
  • FIG. 4 is a schematic sectional view of the formation of a security element S in the form of a removal track 2 and the application of an opaque top layer 12 of a color pigment, paint, polyether, calcium sulfate dihydrate or epoxy resin layer on the surface la of a component 1.
  • the cover layer 12 hides the security element S from a perception with the naked eye or by haptic sensing.
  • FIG. 5 illustrates a basic design of an exemplary security element S during an additive manufacturing process.
  • a non-magnetic material such as aluminum
  • a laser beam 3 FIG. 5A
  • locally defined recesses 15 are formed.
  • These recesses 15 form the geometric shape of a product or company logo, which is to serve as a security element S.
  • the recesses 15 should be arranged after the completion of the component 1 at a maximum distance of 1 mm, preferably 0.3 mm, to the surface la of the component 1.
  • the width and the height of the recesses 15 are in the range of 50 ⁇ to 370 ⁇ . In the recesses 15 is then a from the material of the component
  • the introduced material 16 such as a ferromagnetic iron alloy introduced ( Figure 5B).
  • the powder of the introduced material 16 should have a different permeability to the material of the component, ie they should usually reinforce external magnetic fields in the interior with a larger factor.
  • the introduced material 16 is locally melted by means of a laser beam 3, so that it assumes the cross-sectional shape 17 of the previously formed free space ( Figure 5C and 5D).
  • the introduced material can be left in its original form.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • Computer Security & Cryptography (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

L'invention concerne un procédé permettant de concevoir et de détecter des éléments de sécurité sur la surface d'une pièce et/ou dans une pièce, procédé selon lequel au moins une couche ou au moins une zone qui se compose de préférence d'une matière magnétique ou d'une matière qui diffère de celle qui constitue la pièce est réalisée de manière définie localement et géométriquement sur la surface de la pièce et/ou dans la pièce, laquelle se compose d'une matière magnétique ou non magnétique. Par un enlèvement de matière ou un apport en énergie thermique, défini localement et géographiquement sur ou au niveau de la surface d'une pièce, le long d'un contour prédéfini correspondant à chaque caractéristique de sécurité, au moins une trace d'enlèvement, au moins une zone touchée par la chaleur et/ou au moins une trace de traitement non fondue sont réalisées. Lors de la fabrication de la pièce au moyen d'un procédé de fabrication génératif, une matière magnétique différant de la matière constituant la pièce est introduite de manière définie localement et géographiquement dans la pièce en au moins une position prédéfinie. Pour détecter l'élément de sécurité au moyen d'une unité d'aimantation, au moins un champ magnétique pénétrant dans la pièce est généré ou un flux magnétique qui pénètre dans la pièce est produit à l'intérieur de l'unité d'aimantation. Pour contrôler un élément de sécurité ainsi conçu, les champs de fuite magnétiques apparaissant au niveau de l'élément de sécurité, du fait dudit au moins un champ magnétique, sont détectés avec une unité de détection et les signaux mesurés détectés par l'unité de détection sont transmis à une unité d'évaluation dotée d'un système de traitement d'image ou de reconnaissance de motifs. L'unité d'évaluation dotée d'un système de traitement d'image ou de reconnaissance de motifs permet de contrôler au moyen des champs de fuite magnétiques détectés si l'élément de sécurité correspond ou non aux exigences d'une consigne.
EP17721583.7A 2016-05-04 2017-04-26 Dispositif pour concevoir et détecter des éléments de sécurité sur la surface d'une pièce ou dans une pièce et système pour détecter ces éléments de sécurité Pending EP3452300A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207756.2A DE102016207756A1 (de) 2016-05-04 2016-05-04 Verfahren zur Ausbildung und Detektion von Sicherheitselementen auf der Oberfläche eines Bauteils oder in einem Bauteil, und System zur Detektion dieses Sicherheitselements
PCT/EP2017/059926 WO2017191008A1 (fr) 2016-05-04 2017-04-26 Dispositif pour concevoir et détecter des éléments de sécurité sur la surface d'une pièce ou dans une pièce et système pour détecter ces éléments de sécurité

Publications (1)

Publication Number Publication Date
EP3452300A1 true EP3452300A1 (fr) 2019-03-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17721583.7A Pending EP3452300A1 (fr) 2016-05-04 2017-04-26 Dispositif pour concevoir et détecter des éléments de sécurité sur la surface d'une pièce ou dans une pièce et système pour détecter ces éléments de sécurité

Country Status (4)

Country Link
US (1) US11040564B2 (fr)
EP (1) EP3452300A1 (fr)
DE (1) DE102016207756A1 (fr)
WO (1) WO2017191008A1 (fr)

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WO2018129626A1 (fr) * 2017-01-12 2018-07-19 École De Technologie Supérieure Capteur tactile et procédé de fabrication associé
DE102020120880A1 (de) 2020-08-07 2022-02-10 Bayerische Motoren Werke Aktiengesellschaft Bauteilanordnung sowie Verfahren zur Prozesskontrolle
DE102021130762A1 (de) 2021-11-24 2023-05-25 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zur Detektion wenigstens eines Elementes und/oder wenigstens eines Datums auf einer Oberfläche einer Trägerstruktur

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WO2017191008A1 (fr) 2017-11-09
US20190202228A1 (en) 2019-07-04
DE102016207756A1 (de) 2017-11-09

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