EP4217577A1 - Unité de vitrage isolant et vitrage - Google Patents

Unité de vitrage isolant et vitrage

Info

Publication number
EP4217577A1
EP4217577A1 EP21773528.1A EP21773528A EP4217577A1 EP 4217577 A1 EP4217577 A1 EP 4217577A1 EP 21773528 A EP21773528 A EP 21773528A EP 4217577 A1 EP4217577 A1 EP 4217577A1
Authority
EP
European Patent Office
Prior art keywords
rfid
spacer
mhz
rfid transponder
glazing unit
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
EP21773528.1A
Other languages
German (de)
English (en)
Inventor
Thomas HOLTSTIEGE
Alicia DRÖGE
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 EP4217577A1 publication Critical patent/EP4217577A1/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
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together

Definitions

  • the invention relates to an insulating glazing unit which has at least two glass panes and a spacer and sealing profile running between them near their edges, with at least one RFID transponder being attached to the insulating glazing unit as an identification element.
  • the invention also relates to glazing with a metal frame and an insulating glazing unit inserted into the frame, with the frame encompassing the edges of the insulating glazing unit and at the same time covering the RFID transponder or transponders.
  • the glazing is intended in particular to form facade glazing, a window, a door or an interior partition with a corresponding structure.
  • 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.
  • RFID transponders are known, for example, from US 2005/282495 A1, WO 2007/068974 A2, AU 2008 101 062 A4 or WO 2016/198914 A1.
  • Such insulating glazing units are disclosed, for example, in WO 00/36261 A1, WO 2007/137719 A1, WO 2020/156870 A1 or WO 2020/156871 A1.
  • EP 2 230 626 A1 discloses RFID transponders for identifying solid and composite solid material panels.
  • Such an 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 an improved insulating glazing unit for glazing with frame constructions which consist at least to a considerable extent of metal and which also ensures that the above requirements are met in such installation situations.
  • this object is achieved by an insulating glazing unit having the features of claim 1 .
  • it is solved by glazing with an insulating glazing unit according to the invention.
  • the invention comprises an insulating glazing unit with an RFID transponder for operation with an RFID reading device with an operating frequency fREAD, comprising: at least one spacer that runs all the way around to a
  • spacer frame is shaped and defines an inner area, a first glass pane, which is arranged on a first pane contact surface of the spacer frame, and a second glass pane, which is arranged on a second pane contact surface of the spacer frame, and the glass panes project beyond the spacer frame and an outer area is formed, which is at least partially, preferably completely, filled with a sealing element, wherein at least one RFID transponder, which is arranged at least partially, preferably completely, within the sealing element, the sealing element has a relative permittivity e r of greater than or equal to 2, the spacer at least is electrically conductive in sections, and the RFID transponder has an operating frequency fTRANs of fREAD + 30 Mhz to fREAD + 100 MHz.
  • At least one, preferably precisely one, RFID transponder according to the invention is advantageously arranged in the outside area (between the glass panes and around the spacer frame).
  • outer surface of the glass pane designates in the context of the present
  • the respective surface facing away from the spacer frame Glass pane and the term inner surface of the glass pane means the surface of the glass pane facing the spacer frame.
  • the RFID transponder has an operating frequency fTRANs of fREAD+40 MHz to fREAD+80 MHz.
  • a further aspect of 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, at least in sections and preferably completely peripherally, connecting it Frame element and an insulating glazing unit according to the invention arranged in the frame.
  • the frame encompasses the end face of the insulating 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 they at least completely cover the outer area and the spacer frame in the direction of vision through the insulating glazing unit.
  • Advantageous spacers consist of a hollow profile filled with a desiccant, which consists of metal or is coated at least in sections with at least one metal foil or at least one metallized foil, and on the outer surface of the spacer (hereinafter referred to as the outer surface of the spacer) a (also circumferential) sealing element is applied.
  • the spacer contains or consists of a metal, preferably aluminum.
  • the spacer contains a dielectric base body, preferably a polymer base body.
  • a metallic or metallized insulating film is preferably arranged on the base body.
  • the insulation film typically seals the interior from the exterior and has only a low heat conduction across the insulating glazing unit (i.e. from the first glass pane to the second and vice versa).
  • the insulation film is arranged on the outer surface of the spacer and thus in contact with the sealing element.
  • the insulating film contains a metalized polymer film or a self-supporting metal film, preferably made of or consists of aluminum, an aluminum alloy, copper, gold, silver or stainless steel.
  • the metallization of the polymer film has a thickness of 10 nm to 200 ⁇ m, preferably 30 nm to 100 ⁇ m, and the metal foil has a thickness of 0.02 mm to 0.5 mm and in particular from 0.09 mm to 0. 3mm up.
  • the sealing element has a relative permittivity e r of from 2 to 10, preferably from 2.5 to 10 and particularly preferably from 3 to 6.
  • the sealing element contains or consists of polymers or silane-modified polymers, particularly preferably organic polysulfides, silicones, room-temperature-vulcanizing (RTV) silicone rubber, peroxide-vulcanized silicone rubber and/or addition-vulcanized silicone rubber, polyurethanes, polyisobutylene and/or butyl rubber .
  • polymers or silane-modified polymers particularly preferably organic polysulfides, silicones, room-temperature-vulcanizing (RTV) silicone rubber, peroxide-vulcanized silicone rubber and/or addition-vulcanized silicone rubber, polyurethanes, polyisobutylene and/or butyl rubber .
  • the strength of the frequency shift according to the invention depends on a large number of parameters such as the transponder geometry, the presence of metal elements in the immediate vicinity, the permittivity of the surrounding material and its material thickness.
  • RFID transponders that are arranged at least in sections or completely within a sealing element made of silicone or organic polysulfides are particularly advantageous are.
  • the sealing element made of silicone or of organic polysulfides preferably has a relative permittivity e r of 3 to 6. Frequency shifts occurring in these arrangements can be compensated particularly well. In particular, this enables the use of commercially available US American RFID transponders with an operating frequency fTRANs of 902 MHz to 928 MHz, whose peak frequency fpEAK shifts to around 867 MHz. This makes it easy to read the RFID transponder with an RFID reader that conforms to the European standard (operating frequency fREAD of 867 MHz) and with a reading distance of more than 2 m.
  • the inventors have in particular carried out investigations into insulating glazing units embedded in metallic frames, in which the frame consists of two metallic 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.
  • a further aspect of the invention relates to a system comprising an insulating glazing unit according to the invention or glazing according to the invention and an RFID readout device with an operating frequency fREAD .
  • the operating frequency fREAD of the RFID reading device is between 865 MHz and 869 MHz. This corresponds to the usual and officially approved frequency range in the European Union.
  • the operating frequency fTRANs of the RFID transponder is from 900 MHz to 1000 MHz, particularly preferably from 902 MHz to 928 MHz.
  • the RFID transponder according to the invention 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 operating frequency fTRANs can be changed and adjusted by a comparatively simple change in the length of the dipole antenna, and in particular by simply shortening it. In particular, the operating frequency fTRANs can be shifted to higher frequencies in a range by shortening the length.
  • 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 RFID transponder according to the invention can also have other suitable antennas such as slot antennas, ring antennas, etc.
  • 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 American and other frequency bands) or the SHF at 2.45 GHz and 5.8GHz.
  • the approved frequencies for UHF RFID transponders differ regionally for Asia, Europe and America and are coordinated by the ITU. Radio signals with these frequencies penetrate both wood and conventional plastics, but not metals.
  • the RFID antenna is arranged directly on an electrically conductive body, such as on a metal spacer or on a metal foil or on a metalized foil on the spacer, this can lead to a high-frequency technical short circuit of the RFID antenna and thus to an undesirable impairment of the RFID transponder.
  • the RFID transponder is an RFID transponder of the so-called "on-metal" type, ie its structure means that it is suitable for being placed directly on or in the vicinity of electrically conductive bodies or surfaces, such as metal surfaces. to be arranged and to communicate with an operating frequency fTRANs with an RFID reader.
  • the RFID transponder advantageously contains or consists of an RFID antenna, particularly preferably a dipole antenna or a slot antenna, RFID electronics and a dielectric carrier element.
  • the dielectric carrier element preferably contains or consists of a polymer material.
  • 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 RFID antenna together with the electronics per se can be arranged on a dielectric and, for example, polymeric carrier layer, which significantly simplifies assembly and prefabrication.
  • an insulating glazing unit can have several RFID transponders, in particular in the edge or outer areas of the different sides (top, bottom, right, left) of the insulating glazing.
  • this is necessary in the case of insulating glazing according to the prior art with only short ranges of the RFID transponders in order to quickly find an RFID signal and quickly identify the insulating glazing unit.
  • the inventive increase in the range of the RFID transponders exactly one or a few RFID transponders per insulating glazing are usually sufficient.
  • the RFID transponder is arranged in the outside area, formed by the glass panes protruding over the spacer frame.
  • the RFID transponder is particularly preferably arranged directly on the outer surface of the spacer or on the inner surface of one of the glass panes.
  • the RFID transponder can be placed in the middle of the outside area, i.e. without direct contact with the outer surface of the spacer and without direct contact with the inner surfaces of the glass panes.
  • the RFID transponder is arranged on or near (ie at a distance of preferably less than 2 mm) the outer surface of the sealing element.
  • the outer surface of the sealing element is the surface of the sealing element that faces directly the environment, ie is not limited by the glass panes or the spacer. Usually the sealing element does not protrude beyond the end faces of the glass panes. It goes without saying that several RFID transponders can also be arranged at different positions mentioned above.
  • a preferably strip-shaped coupling element is electromagnetically coupled to the RFID transponder.
  • the RFID transponder advantageously has a dipole antenna and the coupling element is electromagnetically coupled to an antenna pole of the dipole antenna of the RFID transponder.
  • Electromagnetically coupled means here that the coupling element and the RFID transponder are coupled by an electromagnetic field, i.e. are connected both capacitively and inductively and preferably not galvanically.
  • the coupling element is galvanically or capacitively coupled 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.
  • Such coupling elements in insulating glazing units or glazing are known, for example, from WO 2020/156870 A1.
  • the coupling element according to the invention is then preferably arranged congruently in sections 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.
  • a further aspect of the invention comprises the use of an RFID transponder with operating frequency fTRANs in an insulating glazing unit according to the invention or in glazing according to the invention or in a system according to the invention with an RFID reading device with operating frequency fREAD as an identification element.
  • Another aspect of the invention includes a method for tuning the operating frequency fTRANs of an RFID transponder according to the invention in a glazing according to the invention, comprising the following steps:
  • S1 Production of a glazing according to the invention
  • S2 Measurement of the peak frequency fpEAK, preferably by measuring the turn-on power of the RFID transponder as a function of the frequency f and determining the so-called peak frequency fpEAK with minimum turn-on power
  • S3 Comparison of the peak frequency fpEAK with the operating frequency fREAD of the RFID reader, the process being terminated if the absolute amount
  • step S4 Changing the operating frequency fTRANs, preferably by shortening or lengthening the RFID antenna and/or by changing other frequency-determining parts of the RFID transponder, and continuing the method with step S2.
  • the invention is based on the following finding of the inventors: In order to be able to technically sensibly arrange RFID transponders on or in the immediate vicinity of an electrically highly conductive body (typically a metal body or a metal surface), commonly used RFID transponders of the so-called "on-metal" type. These typically have a dielectric carrier element on which the RFID antenna and RFID electronics are arranged.
  • Such RFID transponders of the "on-metal" type are configured in such a way that, when installed on an electrically conductive surface, they compensate for the presence of the electrically conductive surface and have a specific operating frequency fTRANs.
  • This operating frequency fTRANs is then equal to the peak frequency fpEAK.
  • the peak frequency fpEAK also called resonant frequency indicates the frequency with the highest sensitivity, or in other words, the frequency at which the lowest activation power (lowest turn-on power) has to be emitted by an external RFID reader in order to to communicate with the RFID transponder.
  • the electrically conductive surface is formed by a metal spacer or a metalized insulating film on the outer surface of the spacer.
  • a shift in the peak frequency fpEAK takes place when the RFID transponder is arranged completely or at least in sections within a dielectric sealing element.
  • the peak frequency fpEAK is shifted to lower frequency values compared to the actual operating frequency fTRANs of the RFID transponder.
  • the adaptation of the operating frequency fTRANs of the RFID transponder can advantageously take place using the method according to the invention.
  • the peak frequency fpEAK with which the RFID transponder effectively communicates externally
  • the operating frequency fREAD des RFID reader particularly large maximum reading distances between the RFID transponder and the RFID reader can be achieved.
  • the maximum reading distance is the distance between the RFID transponder and the RFID reader at which the RFID transponder can still be read reliably.
  • FIG. 1A shows a detailed view (cross-sectional representation) of an edge region of an insulating glazing unit according to an embodiment of the invention
  • FIG. 1B shows a top view of an insulating glazing unit according to the embodiment of the invention according to FIG. 1A
  • FIG. 2 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. 3 a measurement of the sensitivity (turn-on power) as a function of the frequency of an inventive RFID transponder
  • FIG. 4 shows the measurement of the sensitivity (turn-on power) as a function of the frequency of an RFID transponder mounted in an insulating glazing unit according to the invention
  • FIG. 5 shows a flowchart of an exemplary embodiment of a method according to the invention.
  • the insulating glazing units as well as the glazing and the individual components are each denoted by the same or similar reference numbers, regardless of the fact that the specific designs differ.
  • FIG. 1A shows an edge region of an insulating glazing unit 1 in cross section.
  • 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).
  • 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 5.1, 5.2 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 inner surface 5.4 of the spacer frame 5' delimits an inner area 12 together with the glass panes 4a, 4b.
  • the spacer 5 is usually hollow (not shown) and filled with a desiccant (not shown) which binds any moisture that has penetrated into the interior 12 via small openings on the inside (also not shown).
  • 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 generally protrude beyond the spacer frame 5' on all sides, so that the outer surface 5.3 of the spacer 5 and the outer sections 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 .
  • the sealing element 6 is formed from a silicone, for example.
  • an insulating film 10 is applied, for example, which reduces the heat transfer through the polymeric spacer 5 into the inner area 12.
  • the insulating film 10 can be attached to the polymeric spacer 5 with a polyurethane hot-melt adhesive, for example.
  • the insulating film 10 contains, for example, three polymer layers made of polyethylene terephthalate with a thickness of 12 ⁇ m and three metallic layers made of aluminum with a thickness of 50 nm. The metallic layers and the polymer layers are each applied alternately, the two outer layers of polymer layers are formed.
  • 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 outer surface 5.3 of the spacer 5 becomes electrically conductive in some areas, so that an RFID transponder 9, which is arranged in the immediate vicinity, must be matched to it.
  • RFID transponders of the so-called "on-metal" type are particularly suitable for this.
  • the base body of the spacer 5 consists, for example, of glass fiber reinforced styrene-acrylonitrile (SAN).
  • SAN glass fiber reinforced styrene-acrylonitrile
  • Thermal expansion coefficient can be varied and adjusted.
  • 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 insulating glazing unit 1 according to FIGS. 1A and 1B is provided with an RFID transponder 9, for example, which is arranged inside the seal 6 and here, for example, directly on the outer surface 5.3 of the spacer 5. It goes without saying that the RFID transponder 9 can also be arranged on the glass panes 4a or 4b within the outer area 13, in the middle of the sealing element 6 or on the outer surface, i.e. the surface facing the area surrounding the insulating glazing unit 1.
  • the RFID transponder 9 is, for example, glued onto the spacer 5 or fixed by the seal 6 .
  • the example shown is an RFID transponder 9 in which the dipole antenna 9.1 is arranged on a dielectric carrier element 9.2. This is necessary because the spacer 5, as mentioned above, has a metalized and therefore electrically conductive (heat) insulating film. Without the dielectric support element 9.2, the dipole antenna 9.1 would be arranged directly on the electrically conductive insulating film and would be “short-circuited” as a result. The short circuit can be avoided by using an RFID transponder 9 with a dielectric carrier element 9.2 (so-called “on-metal” RFID transponder). When correctly arranged on the electrically conductive insulating film 10, the RFID transponder 9 has an operating frequency fTRANs, for example in the UHF range, for example 930 MHz.
  • fTRANs for example in the UHF range, for example 930 MHz.
  • FIG. 2 shows a detailed view of the insulating glazing unit 1 from FIGS. 1A and 1B as it can be arranged within a glazing 2, for example.
  • a glazing 2 for example.
  • a U-shaped frame 3 for example, includes the edges of the insulating glazing unit 1 together with the RFID transponder 9.
  • the frame 3 consists of a first metallic frame element 3.1, which has a polymeric and electrically insulating third frame element 3.3 with a second metallic Frame element 3.2 is connected.
  • 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 insulating glazing unit 1 is arranged on supports, not shown here, in particular on plastic supports or support elements electrically insulated by plastics. Furthermore, 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 RFID transponder 9 can be read, for example, with an RFID reading device (not shown here) according to the European standard and an operating frequency fREAD of approximately 867 MHz. As was established within the scope of the invention, the peak frequency fpEAK of the operating frequency fTRANs is changed to lower frequency values by the sealing material of the sealing element 6 in which the RFID transponder 9 is embedded.
  • FIG. 3 shows measurements of the sensitivity (turn-on power) as a function of the frequency of the on-metal type RFID transponder 9 according to the invention on a metal surface with and without sealing compound.
  • a first measurement (measurement curve M1), the RFID transponder 9 is arranged on the metal surface via the carrier element 9.2. The rest of the RFID transponder is "in the open air”.
  • the RFID transponder 9 is also arranged on a metal surface via the carrier element 9.2. Then the RFID transponder 9 was completely covered with the sealing material of a sealing element 6, here for example silicone rubber with a relative permittivity e r of approx.
  • the measured turn-on power indicates the minimum power with which the RFID transponder can be controlled by an external RFID reading device at a frequency f and activated for communication.
  • an on-metal RFID transponder 9 is arranged on the outer surface 5.3 of an electrically conductive spacer 5 of an insulating glazing unit 1, it will necessarily embedded in the sealant of the sealing member 6.
  • the sealant is silicone, polyurethane, polysulfide, or the like. All of these materials have a dielectric constant greater than or equal to 2, well above the "free air" value (nearly 1) for which all on-metal RFID tags are designed.
  • the sealing material in the vicinity of the RFID antenna 9.2 leads to a changed frequency characteristic.
  • the sealing material arranged in the immediate vicinity of the RFID transponder leads to a shift in the peak frequency fpEAK with the lowest turn-on power (which corresponds to the highest sensitivity) towards lower frequency values.
  • the strength of the frequency shift depends on a large number of parameters such as the transponder geometry, the permittivity of the surrounding material, the material thickness and, last but not least, the type of transponder chip (i.e. the integrated circuit of the RFID electronics).
  • the shift in the peak frequency fpEAK with the highest sensitivity is approximately ⁇ 85 MHz.
  • the peak frequency fpEAK is shifted down from 950 MHz to 865 MHz and is thus very close to the permitted RFID frequency band in the European Union.
  • the RFID transponder 9 with an original operating frequency fTRANs of 950 MHz could therefore be read well and from a distance of more than 2 m with a European standard RFID reading device.
  • FIG. 4 shows measurements of the sensitivity (turn-on power) as a function of the frequency f of an RFID transponder 9 mounted in an insulating glazing unit 1 according to the invention.
  • the first measurement (measurement curve M3) was carried out without a covering facade frame; the second measurement (measurement curve M4) was carried out in a covering facade frame 3, as is typically used in a glazing 2 according to the invention.
  • the invention is now based on increasing the operating frequency fTRANs of the on-metal type RFID transponder (ie the operating frequency fTRANs of the transponder mounted on a metal surface without additional dielectric material in the environment) to a higher value (e.g. 950 MHz) to be chosen in order to compensate both the frequency shift caused by the dielectric and possibly also the frequency shift in the peak frequency fpEAK caused by the surrounding metal frame.
  • the aim is to bring the peak frequency fpEAK measured in the real installation situation with maximum sensitivity of the transponder close to the permissible working frequency of a commercial RFID reader, for example with an operating frequency fREAD of 867 MHz (according to the European standard).
  • applies here ⁇ 20MHz.
  • the operating frequency fTRANs can be changed by changing the design of the RFID transponder, in the simplest case by a new antenna design. In many practical cases, in the case of RFID transponders with dipole antennas, it is sufficient to simply change, preferably shorten, the length of the antenna dipole.
  • FIG. 5 shows a flowchart of an exemplary embodiment of the method according to the invention for tuning the operating frequency fTRANs of an RFID transponder 9 in a glazing 2, comprising the following method steps:
  • step (S2) Changing the operating frequency fyRANs, preferably by shortening or lengthening the RFID antenna 9.1 and/or by changing other frequency-determining elements of the RFID transponder 9, and continuing the method with step (S2).
  • an RFID transponder 9 with an operating frequency fTRANs of approximately 930 MHz was used.
  • the installation situation in the glazing 2 according to the invention resulted in a peak frequency fpEAK of approximately 870 MHz. This made it possible to read the RFID transponder 9 with the RFID reading device according to the European standard (operating frequency fREAD of 867 MHz) without any problems and with reading distances of more than 2 m.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

L'invention concerne une unité de vitrage isolant (1) comprenant des transpondeurs RFID (9) destinés à fonctionner avec un dispositif de lecture RFID à une fréquence de fonctionnement fREAD, comprenant : - au moins un espaceur (5) qui est formé de manière périphérique de manière à former un cadre d'espaceur (5') et qui délimite une zone intérieure (12), - une première vitre (4a) qui est placée sur une première surface de contact de vitre (5.1) du cadre d'espaceur (5'), et - une seconde vitre (4b), qui est placée sur une seconde surface de contact de vitre (5.2) du cadre d'espaceur (5'), les vitres (4a, 4b) faisant saillie au-delà du cadre d'espaceur (5'), et une région externe (13) étant au moins en partie, de préférence complètement, remplie d'un élément d'étanchéité (6), au moins un transpondeur RFID (9) étant placé au moins en partie, de préférence complètement, à l'intérieur de l'élément d'étanchéité (6), - l'élément d'étanchéité (6) présentant une permittivité relative εr supérieure ou égale à 2, - l'espaceur (5) étant au moins partiellement électroconducteur, et le transpondeur RFID (9) ayant une fréquence de fonctionnement fTRANS de fREAD + 30 Mhz à fREAD + 100 MHz.
EP21773528.1A 2020-09-23 2021-09-06 Unité de vitrage isolant et vitrage Pending EP4217577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20197747 2020-09-23
PCT/EP2021/074451 WO2022063550A1 (fr) 2020-09-23 2021-09-06 Unité de vitrage isolant et vitrage

Publications (1)

Publication Number Publication Date
EP4217577A1 true EP4217577A1 (fr) 2023-08-02

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Application Number Title Priority Date Filing Date
EP21773528.1A Pending EP4217577A1 (fr) 2020-09-23 2021-09-06 Unité de vitrage isolant et vitrage

Country Status (2)

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EP (1) EP4217577A1 (fr)
WO (1) WO2022063550A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787135B1 (fr) 1998-12-14 2001-06-08 Catrame Fr Multiple vitrage a etiquette electronique
US7292148B2 (en) 2004-06-18 2007-11-06 Avery Dennison Corporation Method of variable position strap mounting for RFID transponder
US8471642B2 (en) 2005-12-16 2013-06-25 Cambridge Resonant Technologies Ltd. Resonant circuits
GB0610634D0 (en) 2006-05-30 2006-07-05 Dow Corning Insulating glass unit
AU2008101062A4 (en) 2007-10-31 2008-11-27 Tru-Test Limited Radio Frequency Identification Reader Automatic Tuning Using Frequency Feedback
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
WO2016198914A1 (fr) 2015-06-09 2016-12-15 Assa Abloy Ab Étiquette rfid à antenne accordable
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

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