EP4330505A1 - Vitrage à transpondeur rfid - Google Patents

Vitrage à transpondeur rfid

Info

Publication number
EP4330505A1
EP4330505A1 EP22722184.3A EP22722184A EP4330505A1 EP 4330505 A1 EP4330505 A1 EP 4330505A1 EP 22722184 A EP22722184 A EP 22722184A EP 4330505 A1 EP4330505 A1 EP 4330505A1
Authority
EP
European Patent Office
Prior art keywords
glazing
frame
glazing unit
dipole antenna
rfid transponder
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
EP22722184.3A
Other languages
German (de)
English (en)
Inventor
Thomas HOLTSTIEGE
Alicia DRÖGE
Bernd Geck
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.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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 Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP4330505A1 publication Critical patent/EP4330505A1/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B3/26301—Frames with special provision for insulation with prefabricated insulating strips between two metal section members
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together

Definitions

  • the invention relates to glazing with a metallic frame and a glazing unit inserted into the frame, preferably an insulating glazing unit, the frame encompassing the edges of the glazing unit and at the same time covering at least one RFID transponder.
  • the RFID transponder can be used as an identification element.
  • the glazing is intended in particular to form facade glazing, a window, a door or an interior partition with a corresponding structure.
  • RFID transponders are used in a variety of ways to identify objects, for example solid or composite solid material panels, as is known, for example, from EP 2 230 626 A1.
  • IGU insulating glazing units
  • Such insulating glazing units represent mass-produced, dispatched and also independently traded products which should be clearly identifiable on their way to an end product and possibly also during its maintenance and repair.
  • the identifying mark should be invisible from both the inside and outside of the finished window, door or curtain wall.
  • the marking should be "readable” from a distance of at least 30 cm.
  • the marking should be as forgery-proof as possible, i.e. it should not be easily overwritten or copied.
  • insulating glazing units with “electronic” identifiers, in particular identifiers that can be read out by radio, so-called RFID transponders.
  • RFID transponders Such insulating glazing units are disclosed, for example, in WO 00/36261 A1, WO 2019/219460 A1, WO 2019/219462 A1 or WO 2007/137719 A1.
  • RFID transponder can be protected with a password so that it cannot be overwritten or its radio capability destroyed without considerable effort.
  • Known insulating glazing units provided with RFID transponders cannot therefore be used without further ado in metal frame constructions. This reduces the potential area of application of the glazing units marked in this way and thus the acceptance of the corresponding marking solutions by manufacturers and users.
  • the invention is therefore based on the object of providing improved glazing with a glazing unit and with a frame construction, the frame construction consisting at least to a considerable extent of metal and which also ensures that the above requirements are met in such installation situations. According to a first aspect of the invention, this object is achieved by a glazing having the features of claim 1 . Expedient developments of the inventive concept are the subject matter of the respective dependent claims.
  • the invention comprises glazing, in particular facade glazing, a window, a door or an interior partition, comprising: a frame made of a metallic first frame element, a metallic second frame element and a polymeric third frame element connecting the frame elements at least in sections and preferably completely circumferentially, and a glazing unit arranged in the frame, in particular an insulating glazing unit, at least one RFID transponder with a dipole antenna and an operating frequency f, with at least one decoupling element
  • the frame encompasses the end faces of the glazing unit and at the same time covers the RFID transponder(s) and the decoupling element(s) in the viewing direction through the glazing unit.
  • the dipole antenna according to the invention typically has two rod-shaped poles that run in a straight line to one another.
  • the extension direction of the dipole antenna is therefore the direction that continues the poles of the dipole antenna in a straight line.
  • Each decoupling element according to the invention is arranged in front of or behind the dipole antenna in the direction of extent. This means that the decoupling element is either in a straight line in a continuation of the poles of the dipole antenna or is offset in front of or behind the dipole antenna.
  • either a decoupling element is arranged immediately adjacent to the dipole antenna, either in front of and another decoupling element behind the dipole antenna, or a decoupling element in front of and a corner of the glazing unit, and thus of the frame, behind the dipole antenna .
  • Directly adjacent here means that no further components, preferably no electrically conductive components and in particular no metallic or metallic components, are arranged between the dipole antenna and the decoupling element.
  • a distance R between the dipole antenna and the one or more adjacent decoupling elements is from 1 cm to 50 cm, preferably from 2 cm to 30 cm.
  • the decoupling element is electrically conductive at least in sections and preferably completely.
  • Electrically conductive means here that the specific electrical conductivity is preferably at least 1 ⁇ 10 5 S/m and particularly preferably at least 1 ⁇ 10 6 S/m.
  • the decoupling element contains a metal, preferably aluminum, an aluminum alloy, copper, silver or high-grade steel.
  • the decoupling element is designed in the form of a film or plate.
  • Foil or plate-like means here that the decoupling element is made considerably thinner in its thickness d (ie the foil or plate thickness) than in its areal dimensions orthogonal to it.
  • the two-dimensional dimensions form the so-called main surfaces (also called front and back) of the decoupling element.
  • the decoupling element has a thickness d of at least 0.05 mm, preferably at least 0.1 mm, particularly preferably from 0.1 mm to 5 mm and in particular from 0.1 mm to 2 mm.
  • the decoupling element can preferably be a self-supporting metal foil or self-supporting metal plate. These can preferably be folded or corrugated and in particular have L- or U-shaped areas for easier fixation in the frame.
  • the decoupling element is fastened to or connected to a carrier, for example a plastic plate.
  • the decoupling element is arranged with its main surface transverse to the direction in which the dipole antenna extends.
  • the extension direction of the dipole antenna is preferably arranged parallel to the extension direction of the area of the frame which covers the RFID transponder (and thus the dipole antenna) and the decoupling element in the viewing direction through the glazing.
  • An arrangement of the main surface of the decoupling element transverse to the extension direction of the dipole antenna means that the surface normal of the main surface is arranged parallel to the extension direction of the dipole antenna.
  • the decoupling element covers at least 10%, preferably at least 20% and particularly preferably from 30% to 90% of the inner frame cross-section of the area of the frame which covers the RFID transponder (and thus the dipole antenna) and the Decoupling element covered by the glazing in the viewing direction.
  • either a decoupling element is arranged immediately adjacent to the dipole antenna, either in front of and another decoupling element behind the dipole antenna, or a decoupling element in front of and a corner of the glazing unit, and thus of the frame, behind the dipole antenna .
  • the decoupling element is galvanically connected or electromagnetically coupled to the metallic frame elements.
  • the decoupling element according to the invention is galvanically isolated from one or from both metal frame elements and is preferably sufficiently spaced apart in order to minimize electromagnetic coupling.
  • the glazing i.e. in particular the frame and the glazing unit, is polygonal (i.e. with three or more corners) and in particular rectangular or square.
  • the glazing unit has two large main surfaces (front and back) which are connected by narrow, circumferential end surfaces.
  • the corners of the glazing unit are formed by the meeting of two end faces forming an angle. The same applies to the frame encompassing the glazing unit.
  • the frame encompasses the end face of the glazing unit, preferably in a U-shape, and at the same time covers the RFID transponder or transponders in the viewing direction through the glass panes.
  • the legs of the first and second frame elements are usually designed in such a way that, in the case of insulating glazing, they at least completely cover the outside area and the spacer frame in the direction of vision through the glazing unit.
  • the frame surrounds all end faces of a glazing unit in the form of a frame, ie the frame is arranged completely around the glazing unit and in particular is self-contained.
  • the frame is designed directly around each glazing unit.
  • the distance A between the end faces of the glazing unit and the inside end faces of the frame is from 0 mm to 50 mm, preferably from 0.5 mm to 50 mm, particularly preferably from 1 mm to 20 mm and in particular from 3 mm to 8mm
  • the inside face of the frame is the face inside the frame that is directly opposite the face of the glazing unit.
  • the glazing unit according to the invention advantageously consists of or comprises a single pane, a laminated pane or a fire-resistant glazing unit, in particular with at least one intumescent layer.
  • the glazing unit according to the invention consists or contains at least one and preferably exactly one insulating glazing unit, which comprises: at least one spacer, which is shaped all the way around to form a spacer frame and delimits an inner area, a first glass pane, which rests on a pane contact surface of the spacer frame, and a second glass pane, which rests on a second pane contact surface of the spacer frame, and the glass panes protrude beyond the spacer frame and form an outer area which is at least partially, preferably completely, filled with a sealing element.
  • At least one RFID transponder is advantageously arranged on the frame in the interior area of the frame.
  • the RFID transponder is preferably arranged on an inside surface of the frame, particularly preferably on one inside face of the frame or an inside face of the first or of the second frame member which is arranged parallel to the major faces of the glazing unit.
  • the RFID transponder is arranged directly on the inside surface of the frame.
  • the RFID transponder is connected to the frame either directly or only by an adhesive layer, preferably an adhesive film or a double-sided adhesive tape.
  • At least one RFID transponder is arranged on the glazing unit, preferably on an external (main) surface or on one of the end faces of the glazing unit.
  • at least one RFID transponder can be arranged in the outer area of the insulating glazing unit, ie in the area between the glass panes protruding beyond the spacer frame, preferably in the sealing element.
  • the present invention is based on the following finding of the inventors: When installing an RFID transponder, for example when embedding a UHF RFID transponder in the sealing compound of an (insulating) glazing unit and then inserting the Glazing unit in a frame containing metal elements, the RFID signal of the transponder is shielded.
  • the signal strength to be measured from outside is influenced by many factors, for example the E-field direction of the respective antenna of the RFID transponder, the geometry of the metal elements of the frame and in particular the proximity to metal edges and corners of the frame.
  • a complex distribution of the E or H field is formed. Only a small part of the transponder signal can "escape" and only a weak signal with a short read distance can reach an RFID reader outside the glazing. The same applies to the signals from the reader to the transponder.
  • the E field is typically radiated parallel to the direction in which the dipole antenna extends. If an RFID transponder with a dipole antenna is arranged in a glazing according to the invention in the usual and, for geometric reasons, the only possible orientation (ie with the direction of extension parallel to the adjacent frame or spacer), only a small proportion of the signal strength comes out directly from the frame.
  • the system of dipole antenna made of the metal parts of the frame and, if necessary, metal elements of the spacer can be understood as a hollow or wave guide.
  • a large part of the electromagnetic waves sent by the RFID transponder does not pass through the small gaps between the metal elements of the frame and glazing unit to be received by the reader. Instead, the electromagnetic waves travel through the waveguide inside along the metal frame members. Only a small portion of the signal can leak out immediately. Most of it propagates inside and along the frame, is possibly (repeatedly) reflected and weakened. This means that the majority of the signal is not available for reading out from outside. Since the strength of the signal emitted to the outside is very low, the reading distance between the frame and the reader must be correspondingly small.
  • the finding of the inventors is based solely on specifically arranging the decoupling element according to the invention within the frame and in the vicinity of the dipole antennas of the RFID transponders.
  • the decoupling elements deliberately represent artificial discontinuities (interruptions, wave barriers) on one or both sides of the RFID transponder and inside the frame acting as a wave or waveguide.
  • Such a discontinuity can consist of any electrically conductive material, e.g. B. a simple metallic foil, which is arranged in the frame (waveguide) transversely to the direction of extension of the frame (ie the main axis of the waveguide).
  • a large part of the signal is directly decoupled from the frame (waveguide/waveguide) by the decoupling element, and only a small part travels further along the waveguide.
  • the possible reading distance between the RFID transponder and reader is significantly increased.
  • a distance D between a center of the dipole antenna and a most closely adjacent corner of the glazing unit is from 40% to 100% of a vacuum wavelength lambda assigned to the operating frequency f of the RFID transponder, preferably from 60% to 100% of the vacuum wavelength lambda and in particular from 70% to 90% of the vacuum wavelength lambda.
  • Such a distance D according to the invention also has the particular advantage of taking account of the fundamentally unfavorable radiation and irradiation conditions for radio waves in a metallic frame of a glazing through a special coupling out and coupling of the RFID signal.
  • the RFID transponder or transponders were arranged near the corners of the glazing unit and thus when installed in the frame near the corners of the frame and on the other side with respect to the direction of extension of the dipole antenna inventive decoupling element was arranged.
  • the nearest adjacent corner means the closest corner, i.e. the corner with the shortest distance to the center of the dipole antenna of the RFID transponder.
  • the optimal distance range is dependent on the vacuum wavelength lambda of the operating frequency f of the RFID transponder. If the operating frequency f of the RFID transponder is in the UHF range, for example 866.6 MHz, this corresponds to a vacuum wavelength lambda of 34.6 cm.
  • the inventors have in particular carried out investigations on glazing units embedded in metallic frames using the example of insulating glazing units in which the frame consists of two metal and therefore electrically conductive frame elements which are connected via a polymeric and electrically insulating frame element.
  • Such frames made of two metallic frame elements, which are connected by a polymer frame element are particularly advantageous since the polymer frame element significantly reduces heat transfer from the first frame element to the second frame element and thus, for example, from an exterior side to an interior side.
  • Elastomer profiles are arranged between the outer sides of the glass panes and the inner sides of the adjacent metal frame elements, which seal the glazing and fix the glass panes.
  • the RFID transponder is designed as a dipole antenna.
  • Such designs can be arranged particularly well in the elongated and strip-shaped outer area along the spacer and between the glass panes, on the end faces of the glass panes or on the outer surfaces of the glass panes within the frame.
  • the dipole antenna contains or consists of at least a first antenna pole and a second antenna pole.
  • the antenna poles are preferably arranged one behind the other in a line and are therefore parallel to one another.
  • RFID electronics or a connection to RFID electronics is arranged in the middle between the antenna poles.
  • the radio wavelengths used in such RFID transponder systems are usually in the UHF range at 865-869 MHz (including European frequencies) or 902-928 MHz (US and other frequency bands).
  • the approved frequencies for UHF RFID transponders differ regionally for Asia, Europe and America and are coordinated by the ITU.
  • the dipole antenna is arranged on a dielectric carrier element, particularly preferably a polymer carrier element.
  • the thickness of the carrier element is adapted to the material and in particular to the dielectric constant of the carrier element and to the geometry of the dipole.
  • the dipole antennas together with the electronics per se can be arranged on a dielectric and, for example, polymer carrier layer, which significantly simplifies assembly and prefabrication.
  • the glazing according to the invention can have one or more RFID transponders with a slot antenna.
  • Slot antennas are known per se to a person skilled in the art, for example from DE894573. Slot antennas also have an elongated shape. However, the E-field typically runs perpendicular to the direction in which the slot antenna extends. In this way, the signal strength reaching the outside can be further optimized and the reading distance with a reading device from the outside can be further increased.
  • a glazing can have a number of RFID transponders, in particular in the edge or outer areas of the various sides (top, bottom, right, left) of the glazing. This is generally necessary in the case of glazing according to the prior art with only short ranges of the RFID transponders in order to quickly find an RFID signal and to quickly identify the glazing together with the glazing unit arranged therein. As a result of the increase in the range of the RFID transponders according to the invention, exactly one or a few RFID transponders per glazing are usually sufficient.
  • the glazing unit has a rectangular shape. Furthermore, it has at least and preferably exactly four RFID transponders.
  • An RFID transponder is preferably arranged in the area of one of the four corners of the glazing unit.
  • Each RFID transponder is advantageously at a distance D from the nearest corner of the glazing unit. That is, the distance D between the center of the dipole antenna and the nearest adjacent corner of the glazing unit is from 40% to 100% of the vacuum wavelength lambda, preferably from 60% to 100% and in particular from 70% to 90%.
  • the glazing unit has a rectangular shape. Furthermore, the glazing has exactly two RFID transponders. In each case, an RFID transponder is arranged in the area of two diagonally opposite corners with respect to the glazing unit.
  • the glazing according to the invention has at least one strip-shaped coupling element which is electromagnetically coupled to the RFID transponder, the coupling element being galvanically or capacitively connected to one of the metal frame elements in at least one coupling area and preferably to one of the metal frame elements in two coupling areas is coupled.
  • This further development of the invention includes the idea of arranging a coupling element, which is provided separately from the RFID transponder, on the glazing unit in such a way that, with suitable installation in a glazing unit, it is optimally coupled to the frame and signal transmission from the frame to the antenna of the RFID Transponder or from the antenna of the RFID transponder to the frame and thus to the outside of the glazing.
  • the advantage according to the invention through the defined distance D can be further improved as a result.
  • the coupling element is electromagnetically coupled to an antenna pole of the dipole antenna or the slot antenna of the RFID transponder.
  • Electromagnetically coupled means here that the coupling element and the RFID transponder are coupled by an electromagnetic field, ie are connected both capacitively and inductively and preferably not galvanically.
  • the RFID transponder is designed as a dipole antenna.
  • Sections of the coupling element according to the invention are arranged congruently over the RFID transponder. Congruent in sections means that the coupling element covers the dipole antenna in sections in the orthogonal projection onto the RFID transponder.
  • the coupling element partially covers the RFID transponder and in particular an antenna pole of the dipole antenna of the RFID transponder when viewed perpendicularly to the front face of the frame.
  • the coupling element is at least as large as the dipole antenna of the RFID transponder.
  • the coupling element in the projection protrudes beyond the dipole antenna both on one side along the direction of extent of the dipole antenna and transversely to the direction of extent.
  • the direction of extension of the dipole antenna is the longitudinal direction of the dipole antenna, that is to say along its antenna poles arranged linearly with respect to one another and in the direction of their straight extension.
  • the coupling element contains or consists of a self-supporting metal foil, preferably made of aluminum, an aluminum alloy, copper, silver or stainless steel.
  • Preferred metal foils have a thickness of 0.02 mm to 0.5 mm and in particular 0.09 mm to 0.3 mm.
  • Such coupling elements can be easily integrated into the glazing and are also easy and inexpensive to produce. It goes without saying that the metal foil can also be stabilized by a polymer foil or electrically insulated on one or both sides.
  • the coupling element contains or consists of a metallized polymer film with a preferred metallization made of aluminum, an aluminum alloy, copper, silver or stainless steel.
  • Preferred metal layers have a thickness of 10 ⁇ m to 200 ⁇ m.
  • Such coupling elements can also be easily integrated into the glazing and can also be produced easily and inexpensively.
  • the coupling element according to the invention is advantageously arranged between the RFID transponder and at least one section of one of the frame elements.
  • the coupling element is arranged directly on the frame elements and is capacitively or galvanically connected to the metallic frame elements.
  • an electrical insulation layer is arranged in sections between the coupling element and the metal frame elements, which electrically isolates the coupling element from the metal frame elements. This is advisable in particular if the coupling element does not itself already have an electrically insulating carrier film or casing in order to reduce the thermal coupling between the outside and inside. Such galvanic isolation avoids a short circuit of the coupling element in undesired areas, which can limit its functionality.
  • the insulation layer is, for example, a polymer film or a lacquer film made from an electrically insulating material.
  • the coupling element according to the invention is advantageously arranged at least in sections on the inside end face of the frame.
  • the coupling element protrudes beyond the inside end face transversely to the direction of extent.
  • the extending direction of the frame here means the direction of the long side of the frame as opposed to the short side of the frame formed only by the depth of the frame orthogonal to the planes of the glazing.
  • the coupling element protrudes beyond the inside face of the frame by an overhang U.
  • the coupling element is arranged in the area of the overhang on the inside surface of the frame element, which runs parallel to the large surfaces of the glazing.
  • the maximum overhang is dependent on the width of the metallic frame element and in particular on the thickness of the elastomer profile, which is 6 mm to 7 mm, for example.
  • the overhang U is preferably from 2 mm to 30 mm, particularly preferably from 5 mm to 15 mm and in particular from 7 mm to 10 mm.
  • the preferred length L of the coupling element ie the length parallel to the extension direction of the dipole antenna, depends on the operating frequency f of the RFID transponder.
  • the coupling element has a length L parallel to the dipole antenna of greater than or equal to 40% of half the vacuum wavelength lambda/2 of the operating frequency f of the dipole antenna, preferably from 40% to 240%, particularly preferably from 60% to 120% and in particular from 70% to 95%.
  • the coupling element has a length L parallel to the dipole antenna from 7 cm to 40 cm, preferably from 10 cm to 20 cm and in particular from 12 cm to 16 cm.
  • the coupling element covers only one antenna pole of the dipole antenna and protrudes beyond the antenna pole on the side facing away from the other antenna pole. Covering here means that the coupling element is arranged in front of the respective antenna pole in the direction of view of the RFID transponder and covers it. Or in other words, the coupling element covers the respective antenna pole in the orthogonal projection.
  • the coupling element covers only the first antenna pole of the dipole antenna and extends beyond the first antenna pole on the side facing away from the second antenna pole.
  • the coupling element covers only the second antenna pole of the dipole antenna and extends beyond the second antenna pole on the side facing away from the first antenna pole.
  • one edge of the coupling element is arranged over the center of the dipole antenna and extends over the first or the second antenna pole.
  • the coupling element can also have a small offset V between the edge of the coupling element and the center of the dipole antenna, the offset V being measured in the projection of the coupling element onto the dipole antenna.
  • the offset V therefore means that the projection of the edge of the coupling element is not arranged exactly in the middle between the antenna poles of the dipole antenna, but deviates from it by an offset V in the direction of extension of one antenna pole or in the direction of extension of the other antenna pole.
  • the respective maximum offset is dependent on half the vacuum wavelength lambda/2 of the operating frequency f of the dipole antenna.
  • the Offset V from -20% to +20% of half the vacuum wavelength Lambda/2 of the operating frequency f of the RFID transponder, preferably from -10% to +10% and in particular from -5% to +5%.
  • the offset V at an operating frequency f of the RFID transponder in the UHF range is from -30 mm to +30 mm, preferably from -20 mm to +20 mm and in particular from -10 mm to +10 mm.
  • a positive sign means here, for example, that the edge of the coupling element is arranged on the second antenna pole in the projection and the rest of the second antenna pole is completely covered, while the first antenna pole is completely uncovered.
  • a negative sign means that the edge of the coupling element is arranged on the first antenna pole in the projection and a section of the first antenna pole and the rest of the second antenna pole are completely covered.
  • the width of the coupling element advantageously depends on the width of the frame and, if applicable, on the respective one-sided or two-sided projection beyond the inside end face of the frame. Typical widths are from 2 cm to 10 cm and preferably from 3 cm to 5 cm.
  • the coupling element according to the invention is coupled galvanically or capacitively to one of the metallic frame elements in at least one coupling region and preferably to one of the metallic frame elements in each case in two coupling regions.
  • the coupling element is preferably in direct contact with the metallic frame element and is connected to it, for example, galvanically.
  • the coupling element preferably touches the metallic frame element over its entire length.
  • the coupling element does not have to be firmly anchored to the metallic frame element. Rather, a loose fit or clamping is sufficient. In particular, a capacitive coupling between the coupling element and the metallic frame element in the coupling area is sufficient.
  • the RFID transponder is arranged on the polymeric third frame element and a first strip-shaped coupling element is arranged between the first antenna pole of the dipole antenna and the third frame element, which is capacitively or galvanically coupled to the first frame element and a second strip-shaped one Arranged coupling element between the second antenna pole of the dipole antenna and the third frame element, which is capacitively or galvanically coupled to the second frame element.
  • the first coupling element only extends to a section of the first frame element and not to the second frame element. Furthermore, the second coupling element only extends to a portion of the second frame element and not to the first frame element.
  • glazing according to the invention does not have to have a coupling element or structural elements that have the same functional effect. That is, in an alternative advantageous embodiment of the invention, the glazing according to the invention has no electrically conductive active or passive components and in particular no coupling elements are arranged between the RFID transponder and the frame elements.
  • FIG. 1A shows a detailed view (cross-sectional representation) of an edge region of a glazing with an insulating glazing unit according to an embodiment of the invention
  • FIG. 1B shows a detailed view (top view) of a section of the glazing with the insulating glazing unit according to FIG. 1A
  • FIG. 1A shows a detailed view (cross-sectional representation) of an edge region of a glazing with an insulating glazing unit according to an embodiment of the invention
  • FIG. 1B shows a detailed view (top view) of a section of the glazing with the insulating glazing unit according to FIG. 1A
  • FIG. 1C shows a detailed view (cross-sectional representation) of the glazing in a sectional plane parallel to the end face of the insulating glazing unit according to FIG. 1A,
  • FIG. 1D shows a greatly simplified comparative representation of a glazing with an RFID transponder configuration according to the prior art in comparison with an RFID transponder configuration with decoupling elements according to the invention.
  • FIG. 1E shows a detailed view (top view) of a section of a further embodiment of a glazing according to the invention with an insulating glazing unit,
  • FIG. 2A shows a detailed view (cross-sectional representation) of an edge area of a glazing with an insulating glazing unit according to a further embodiment of the invention
  • FIG. 2B shows an isolated representation of the decoupling element according to FIG. 2A
  • FIG. 3A shows a detailed view (cross-sectional view) of an edge area of a glazing with an insulating glazing unit according to a further embodiment of the invention
  • FIG. 3B shows an isolated view of the decoupling element according to FIG. 3A
  • FIG. 3C shows a detailed view (top view) of a section of the glazing with the insulating glazing unit according to FIG. 3A
  • FIG. 4A shows a detailed view (cross-sectional representation) of an edge area of a glazing with an insulating glazing unit according to a further embodiment of the invention
  • FIG. 4B an isolated representation of the decoupling element according to FIG. 4A
  • FIG. 4C shows a detailed view (top view) of a section of the glazing with the insulating glazing unit according to FIG. 4A
  • FIG. 5A shows a detailed view (cross-sectional representation) of an edge region of a glazing with an insulating glazing unit according to a further embodiment of the invention
  • FIG. 5B shows an isolated representation of the decoupling element according to FIG. 5A
  • FIG. 5C shows a detailed view (top view) of a section of the glazing with an insulating glazing unit according to FIG. 5A, FIG.
  • FIG. 6B shows an isolated representation of the decoupling element according to FIG. 6A.
  • FIG. 6C shows a detailed view (top view) of a section of the glazing with the insulating glazing unit according to FIG. 6A.
  • FIG. 1A shows a detailed view (cross-sectional view) of an edge area of a glazing 2 according to the invention with an insulating glazing unit 1.
  • the glazing 2 can also be one or more glazing units made from a single pane, a laminated pane or a fire-resistant glazing unit, in particular with an intumescent layer, may have. All the embodiments presented here apply to all types of glazing units in isolation and in combination.
  • FIG. 1B shows a schematic detailed view (top view) of a section of the glazing 2 with the insulating glazing unit 1 according to FIG. 1A, viewed in the direction of arrow A from FIG. 1A.
  • FIG. 1C shows a schematic detailed view (cross-sectional view) of the glazing 2 in a sectional plane parallel to the end face 14 of the insulating glazing unit 1 according to FIG. 1A looking in the direction of arrow B in FIG. 1A.
  • the insulating glazing unit 1 comprises two glass panes 4a and 4b. These are held at a predetermined distance by a spacer 5 placed between the glass panes 4a, 4b near the end face 14 of the insulating glazing unit 1.
  • the base body of the spacer 5 consists, for example, of glass fiber reinforced styrene acrylonitrile (SAN).
  • SAN glass fiber reinforced styrene acrylonitrile
  • FIG. 1B shows a schematic plan view of the insulating glazing unit 1 in a viewing direction that is identified by the arrow A.
  • FIG. 1B therefore shows the second glass pane 4b on top.
  • a plurality of spacers 5 are guided along the side edges of the glass panes 4a, 4b and form a spacer frame 5'.
  • the pane contact surfaces of the spacers 5, i.e. the contact surfaces of the spacers 5 to the glass panes 4a, 4b, are each glued to the glass panes 4a or 4b and thereby mechanically fixed and sealed.
  • the adhesive connection consists, for example, of polyisobutylene or butyl rubber.
  • the spacer 5 is usually hollow (not shown) and filled with a desiccant (not shown) which penetrates into the inner area 12 via small openings on the inside (also not shown). binds moisture.
  • the desiccant contains, for example, molecular sieves such as natural and/or synthetic zeolites.
  • the inner area 12 between the glass panes 4a and 4b is filled, for example, with an inert gas such as argon.
  • the glass panes 4a, 4b protrude on all sides as a rule
  • Spacer frame 5 also, so that the outer surface of the spacer 5 and the outer portions of the glass panes 4a, 4b form an outer area 13.
  • a sealing element (sealing profile) 6 is introduced in this outer area 13 of the insulating glazing unit 1 between the glass sheets 4a and 4b and outside the spacer 5 .
  • This is shown here in simplified form in one piece. In practice, it usually comprises two components, one of which seals the contact surface between the spacer 5 and the glass panes 4a, 4b and protects it from the ingress of moisture and external influences from the outside.
  • the second component of the sealing element 6 additionally seals and mechanically stabilizes the insulating glazing unit 1 . That
  • Sealing element 6 is formed, for example, from an organic polysulfide.
  • an insulating film (not shown here) is applied, for example, which reduces the heat transfer through the polymeric spacer 5 into the inner area 12.
  • the insulating film can be attached to the polymeric spacer 5 with a polyurethane hot-melt adhesive, for example.
  • the insulation film contains, for example, three polymeric layers of polyethylene terephthalate with a thickness of 12 ⁇ m and three metallic layers of aluminum with a thickness of 50 nm. The metallic layers and the polymeric layers are applied alternately, the two outer layers being formed by polymeric layers will.
  • the layer sequence consists of a polymeric layer, followed by a metallic layer, followed by an adhesive layer, followed by a polymeric layer, followed by a metallic layer, followed by an adhesive layer, followed by a metallic layer, followed by a polymeric layer .
  • the base body of the spacer 5 consists, for example, of glass fiber reinforced styrene-acrylonitrile (SAN).
  • SAN glass fiber reinforced styrene-acrylonitrile
  • the spacer body has a glass fiber content of 35%, for example. The glass fiber content in the spacer body improves strength and stability at the same time.
  • the first glass pane 4a and the second glass pane 4b consist, for example, of soda-lime glass with a thickness of 3 mm and have dimensions of 1000 mm ⁇ 1200 mm, for example. It goes without saying that each insulating glazing unit 1 shown in this and the following exemplary embodiments can also have three or more panes of glass.
  • the glazing 2 also includes a U-shaped frame 3, for example.
  • the frame 3 consists of a first metallic frame element 3.1, which is connected to a second metallic frame element 3.2 via a polymeric and electrically insulating third frame element 3.3.
  • the first and second frame elements 3.1, 3.2 are L-shaped.
  • the frame 3 therefore surrounds the end face 14 of the insulating glazing unit 1 in a U-shape.
  • the sections of the first and second frame elements running parallel to the large surfaces of the glass panes 4a, 4b are designed in such a way that they connect at least the outer area 13 with the sealing element 6 and the spacer frame 5' completely covered by the insulating glazing unit 1 in the viewing direction (arrow A).
  • the frame 3 surrounds all end faces 14 of the insulating glazing 1 and forms a closed border.
  • the distance A between the end face 14 of the insulating glazing unit 1 and the inside end face of the frame 3 is approximately 4 mm, for example.
  • the insulating glazing unit 1 is on a carrier, not shown here, in particular on a plastic carrier or by plastics electrically isolated support elements arranged.
  • an elastomer profile 7 is arranged between the metallic frame elements 3.1, 3.2 and the glass panes 4a, 4b, so that the insulating glazing unit 1 is held firmly within the frame 3.
  • the elastomer profile 7 has a thickness of 6.5 mm, for example, and fixes the distance between the respective frame elements 3.1, 3.2 and the glass panes 4a, 4b.
  • the glazing according to FIGS. 1A to 1C is provided with an RFID transponder 9, for example, which is arranged on the second frame element 3.2.
  • the RFID transponder 9 is arranged within the frame 3 and there on the inner surface of the second frame element 3.2, which runs parallel to the large surfaces of the glass panes 4a and 4b.
  • the RFID transponder 9 can also be arranged at other positions within the frame 3, for example on one of the inner front surfaces of the frame elements 3.1, 3.2, 3.3 or on the inner surface of the first frame element 3.1, which is parallel to the large surfaces of the glass panes 4a and 4b.
  • the arrangement of the RFID transponder 9 on one of the metallic frame elements 3.1, 3.2 is to be preferred due to better signal coupling and decoupling.
  • the operating frequency f of the RFID transponder is in the UHF range and for example around 866.6 MHz, which corresponds to a lambda vacuum wavelength of 34.6 cm.
  • the example shown is an RFID transponder 9 in which the dipole antenna 9.1 is arranged on a dielectric carrier body 9.2. This is necessary because the second frame element 3.2 is electrically conductive. Without the dielectric carrier body 9.2, the dipole antenna 9.1 would be arranged directly on an electrically conductive surface and would thus be “short-circuited”. The short circuit can be avoided by using an RFID transponder 9 with a dielectric carrier body 9.2 (so-called “on-metal” RFID transponder).
  • Decoupling elements 30 are shown in FIGS. 1A-C.
  • a decoupling element 30 with respect to the Extension direction of the dipole antenna 9.1 arranged in front of and behind the dipole antenna 9.1.
  • the decoupling elements 30 are arranged here, for example, transversely to the direction of extent of the dipole antenna 9.1 and thus also transversely to the direction of extent, that is to say the main axis, of the frame 3.
  • the decoupling elements 30 are arranged completely inside the frame 3 . This means that the frame 3, which encompasses the end face 14 of the glazing unit, also covers the RFID transponder 9 and the two decoupling elements 30 in the viewing direction (arrow A from FIG. 1A) through the glazing unit.
  • the main surfaces of the decoupling elements 30 are U-shaped here, for example, and surround the end faces 14 of the insulating glazing unit 1.
  • the decoupling elements 30 touch the outer main sides of the glass panes 4a, 4b and their end faces 14. Furthermore, the decoupling elements 30 extend to the inner areas of the frame elements 3.1, 3.2, 3.3 and up to the elastomer profile 7. As a result, the inner frame cross-section outside of the insulating glazing unit 1 is essentially completely covered.
  • the decoupling elements 30 consist, for example, of a copper foil with a thickness d of 0.5 mm. Distances R according to the invention between the dipole antenna 9.1 and the respective adjacent decoupling element 30 are 10 cm, for example.
  • FIG 1D shows a greatly simplified comparative representation of a glazing 2 with an RFID transponder configuration according to the prior art (Pos2) in comparison with an inventive RFID transponder configuration (Pos1) with decoupling elements 30 according to the invention.
  • the structure of the glazing 2, the insulating glazing unit 1, the frame 3 and the arrangement of the RFID transponders 9 essentially corresponds to FIGS. 1A-C, so that only the specific differences are discussed below.
  • the RFID transponder 9 with the dipole antenna 9.1 is arranged approximately centrally on the lower side of the glazing 2 within the frame 3.
  • a decoupling element 30 according to the invention is arranged to the left of the RFID transponder 9 (i.e. in front of or behind the RFID transponder 9 in the direction of extent of the respective frame section 3 or the direction of extent of the dipole antenna 9.1 running parallel thereto).
  • An E-field emitted by the dipole antenna 9.1 is first coupled into the frame section 3, which acts as a hollow or waveguide, in the direction in which the dipole antenna 9.1 extends. The E field propagates in frame 3 until it hits decoupling elements 30 .
  • the signal of the dipole antenna 9.1 is routed out of the frame 3 with a high signal strength. This is symbolized in FIG. 1D by the arrows pointing away from the decoupling elements 30 .
  • the signal of the RFID transponder 9 in the configuration according to Pos1 according to the invention can be read from a great distance with an RFID reader.
  • an RFID transponder configuration according to the prior art is shown in FIG. 1D on the upper frame 3 of the glazing 2, i.e. without decoupling elements according to the invention.
  • the RFID transponder 9 with a dipole antenna 9.1 is also arranged approximately in the middle of the upper side of the glazing within the frame 3.
  • An E-field radiated by this dipole antenna 9.1 is also initially coupled in the extension direction of the dipole antenna 9.1 into the (here: upper) section of the frame 3 acting as a hollow or waveguide.
  • the E-field propagates with losses in signal strength in frame 3 until it reaches the corners of frame 3. A small part of the signal is coupled out there (symbolized by arrows).
  • the signal strength measurable from outside the glazing 2 is much lower than in the configuration according to the invention (Pos1), so that an RFID reader much closer to the glazing 2 in order to receive a signal of sufficient strength.
  • FIG. 1E shows another example of a glazing 2 according to the invention.
  • the glazing 2 essentially corresponds to the glazing 2 from FIGS. 1A-C, so that only the differences are discussed here and otherwise reference is made to the description of FIGS. 1A-C becomes.
  • the RFID transponder 9 with the dipole antenna 9.1 is arranged in the vicinity of the lower left corner 20 of the glazing 2.
  • FIG. The glazing 2 therefore has only one decoupling element 30 (here on the left of the dipole antenna 9.1).
  • the distance R between the dipole antenna 9.1 is also 10 cm, for example.
  • the distance D between the center 17 of the dipole antenna 9.1 and the next neighboring corner 20 of the insulating glazing unit 1 is 20 cm here, for example. In this exemplary embodiment, too, there are large reading distances with an RFID reader due to a strong decoupling of the signal by the decoupling element 30 interacting with the corner 20 of the insulating glazing unit 1.
  • FIG. 2A shows a detailed view (cross-sectional representation) of an edge area of a glazing 2 with an insulating glazing unit 1 according to a further embodiment of the invention
  • FIG. 2A shows a modified construction which largely has the elements and structure of the glazing 2 with insulating glazing unit 1 according to FIGS. 1A-C.
  • the same reference numbers are used as there and the structure is not described again here.
  • the insulating glazing unit 1 according to FIG. 2 differs from FIGS. 1A and 1C in that the RFID transponder 9 is here arranged directly on the inner face of the third frame element 3.3. It goes without saying that it can also be arranged on the inner face of the first frame element 3.1 or the second frame element 3.2.
  • the glazing 2 shown here has two decoupling elements 30, the main surface of which is designed here, for example, in the shape of a rectangle.
  • Figure 2B shows an isolated view of the decoupling elements 30 according to the invention.
  • the decoupling elements 30 are here, for example, on the lower inner edge of the frame elements 3.1, 3.2, 3.3 and in the cross-sectional view shown in front of (not shown) and behind the RFID transponder 9.
  • FIG. 3A shows a detailed view (cross-sectional representation) of an edge area of a glazing 2 with an insulating glazing unit 1 according to a further embodiment of the invention.
  • FIG 3A shows a modified construction which largely has the elements and structure of the glazing 2 with insulating glazing unit 1 according to Figures 1A-C.
  • the same reference numbers are used as there and the structure is not described again here.
  • the RFID transponder 9 is arranged in the sealing element 6 within the outer area 13 of the insulating glazing unit 1 and directly on the outer side of the spacer frame 5 .
  • the glazing 2 shown here has two decoupling elements 30 which are arranged here in sections within the sealing element 6 .
  • FIG. 3B shows an isolated representation of the decoupling elements 30 according to the invention.
  • the main surface of the decoupling elements 30 is T-shaped in this example and consists of a wider, transverse first area 30.1 and a narrower second area 30.2 deviating from the center. Only the first region 30.1 of the decoupling element 30 located behind the RFID transponder 9 in the viewing direction can be seen in the cross-sectional representation of FIG. 3A.
  • the second area 30.2 is embedded in the sealing element 6 and therefore cannot be seen in FIG. 3A.
  • FIG. 3C shows a detailed view (top view) of a section of the glazing 2 with the insulating glazing unit 1 according to FIG. 3A, viewed in the direction of arrow A from FIG. 3A.
  • the decoupling elements 30 protrude from the inner underside of the frame 3 to the outer surface of the spacer 5.
  • FIG. 4A shows a detailed view (cross-sectional representation) of an edge area of a glazing 2 with an insulating glazing unit 1 according to a further embodiment of the invention.
  • FIG. 4A shows a modified construction which largely has the elements and the structure of the glazing 2 with the insulating glazing unit 1 according to FIGS. 3A and 3B.
  • the same reference numbers are used as there and the structure is not described again here.
  • the RFID transponder 9 is arranged in the sealing element 6 within the outer area 13 of the insulating glazing unit 1 and directly on the outer side of the spacer frame 5 .
  • the glazing 2 shown here has two decoupling elements 30 which are arranged here in sections within the sealing element 6 .
  • FIG. 4B shows an isolated representation of the decoupling elements 30 according to the invention.
  • these are in the form of strips (rectangular) and consist of a first area 30.1 and a second area 30.2.
  • first area 30.1 the decoupling element 30 lying behind the RFID transponder 9 in the viewing direction
  • second area 30.2 is embedded in the sealing element 6 and therefore cannot be seen in FIG. 4A.
  • FIG. 4C shows a detailed view (top view) of a section of the glazing 2 with the insulating glazing unit 1 according to FIG. 4A, viewed in the direction of arrow A from FIG. 4A.
  • the decoupling elements 30 each protrude from the inner underside of the frame 3 to the outer surface of the spacer 5.
  • FIG. 5A shows a detailed view (cross-sectional representation) of an edge area of a glazing 2 with an insulating glazing unit 1 according to a further embodiment of the invention.
  • FIG. 5A shows a modified construction which largely has the elements and the structure of the glazing 2 with the insulating glazing unit 1 according to FIGS. 4A and 4B.
  • the same reference numbers are used as there and the structure is not described again here.
  • the RFID transponder 9 is arranged in the sealing element 6 within the outer area 13 of the insulating glazing unit 1 and directly on the outer side of the spacer frame 5 .
  • the glazing 2 shown here has two decoupling elements 30 which are arranged completely within the sealing element 6 here.
  • FIG. 5B shows an isolated representation of the decoupling elements 30 according to the invention.
  • these are in the form of strips (rectangular).
  • the decoupling element 30 is completely embedded in the sealing element 6 and therefore cannot be seen in FIG. 5A.
  • FIG. 5C shows a detailed view (top view) of a section of the glazing 2 with the insulating glazing unit 1 according to FIG. 5A, viewed in the direction of arrow A from FIG. 5A.
  • the decoupling elements 30 extend here from the height of the end faces of the glass panes 4a, 4b to the outer surface of the spacer 5.
  • FIG. 6A shows a detailed view (cross-sectional representation) of an edge area of a glazing 2 with an insulating glazing unit 1 according to a further embodiment of the invention.
  • FIG. 6A shows a modified construction which largely contains the elements and structure of the glazing 2 with the insulating glazing unit 1 according to FIGS 4A and 4B.
  • the same reference numbers are used as there and the structure is not described again here.
  • the RFID transponder 9 is arranged in the sealing element 6 within the outer area 13 of the insulating glazing unit 1 and directly on the outer side of the spacer frame 5 .
  • the glazing 2 shown here has two decoupling elements 30 which are arranged completely outside of the sealing element 6 here.
  • FIG. 6B shows an isolated representation of the decoupling elements 30 according to the invention.
  • these are in the form of strips (rectangular).
  • the decoupling element 30 is arranged completely outside of the sealing element 6 and is located completely below the end faces 14 of the glass panes 4a, 4b and above the underlying section of the inner edge of the frame elements 3.1, 3.2, 3.3.
  • the decoupling element 30 according to the invention is not arranged in the extension of the dipole antenna 9.1 itself here, but offset below the extension line. This can be seen in FIG. 6A in that the dipole antenna 9.1 does not cover the decoupling element 30, but is arranged offset in the cross-sectional view shown in FIG. 6A.
  • FIG. 6C shows a detailed view (top view) of a section of the glazing 2 with the insulating glazing unit 1 according to FIG. 5A, viewed in the direction of arrow A from FIG. 5A.
  • the decoupling elements 30 extend here from the lower inner surface of the frame 3 to the end faces 14 of the glass panes 4a, 4b.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne un vitrage (2), en particulier un vitrage de façade, une fenêtre, une porte ou une cloison de pièce intérieure, comprenant : - un cadre (3) constitué d'un premier élément de cadre métallique (3.1), d'un deuxième élément de cadre métallique (3.2) et d'un troisième élément de cadre polymère (3.3) qui relie les éléments de cadre (3.1, 3.2) au moins par endroits, de préférence sur toute la périphérie, - une unité de vitrage qui est disposée dans le cadre (3) et - au moins un transpondeur RFID (9) avec une antenne dipôle (9.1) et une fréquence de fonctionnement f. Au moins un élément de découplage (30) est disposé devant et/ou derrière l'antenne dipôle (9.1) dans la direction d'extension et à l'intérieur du cadre (3) et le cadre (3) entoure les faces d'extrémité (14) de l'unité de vitrage et recouvre simultanément le(s) transpondeur(s) RFID (9) et le(s) élément(s) de découplage (30) dans la direction d'observation (flèche A) au moyen de l'unité de vitrage.
EP22722184.3A 2021-04-30 2022-04-11 Vitrage à transpondeur rfid Pending EP4330505A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21171425 2021-04-30
PCT/EP2022/059559 WO2022228871A1 (fr) 2021-04-30 2022-04-11 Vitrage à transpondeur rfid

Publications (1)

Publication Number Publication Date
EP4330505A1 true EP4330505A1 (fr) 2024-03-06

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ID=75746389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22722184.3A Pending EP4330505A1 (fr) 2021-04-30 2022-04-11 Vitrage à transpondeur rfid

Country Status (2)

Country Link
EP (1) EP4330505A1 (fr)
WO (1) WO2022228871A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894573C (de) 1951-08-23 1953-10-26 Lorenz C Ag Schlitzantenne
FR2787135B1 (fr) 1998-12-14 2001-06-08 Catrame Fr Multiple vitrage a etiquette electronique
GB0610634D0 (en) 2006-05-30 2006-07-05 Dow Corning Insulating glass unit
EP2230626A1 (fr) 2009-03-15 2010-09-22 Dula-Werke Dustmann & Co. GmbH Procédé de marquage et procédé de traitement de plaques de matériau massif ou composite par RFID ainsi que dispositif correspondant
CN112088238B (zh) 2018-05-14 2022-08-16 法国圣戈班玻璃厂 绝缘玻璃化物单元
US11436466B2 (en) 2018-05-14 2022-09-06 Saint-Gobain Glass France Insulating glazing unit
US20220025696A1 (en) * 2019-01-29 2022-01-27 Saint-Gobain Glass France Façade glazing and insulating glazing unit
CN113330179B (zh) * 2019-01-29 2023-04-18 法国圣戈班玻璃厂 绝缘玻璃窗单元和玻璃窗
BR112021023720A2 (pt) * 2019-08-09 2022-02-15 Saint Gobain Vidraça com transponder de rfid

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