EP3494555A1 - Ensemble vitre à alarme - Google Patents

Ensemble vitre à alarme

Info

Publication number
EP3494555A1
EP3494555A1 EP17745708.2A EP17745708A EP3494555A1 EP 3494555 A1 EP3494555 A1 EP 3494555A1 EP 17745708 A EP17745708 A EP 17745708A EP 3494555 A1 EP3494555 A1 EP 3494555A1
Authority
EP
European Patent Office
Prior art keywords
coating
alarm
antenna
transparent
electrically conductive
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.)
Withdrawn
Application number
EP17745708.2A
Other languages
German (de)
English (en)
Inventor
Christian EFFERTZ
Guillaume Francois
Stefan Droste
Klaus SCHMALBUCH
Ariane WEISSLER
Hans-Werner Kuster
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
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 EP3494555A1 publication Critical patent/EP3494555A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3668—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties
    • C03C17/3671—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties specially adapted for use as electrodes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
    • B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means

Definitions

  • the invention relates to an alarm disk arrangement, in particular for insulating glazing, with a structured, transparent, electrically conductive coating and a sensor unit for measuring the impedance matching of an antenna. Furthermore, the invention relates to a method for operating the alarm disk arrangement.
  • alarm discs In order to detect the breakage of a disc, for example in the event of burglary or other damage, so-called alarm discs are used. These alarm discs are usually part of an insulated or multiple glazing. In this case, there is usually at least one disc made of toughened tempered safety glass (ESG). If damaged, the tempered glass breaks over its entire surface into small fragments.
  • ESG toughened tempered safety glass
  • alarm discs which have a transparent, electrically conductive coating, for example from DE 197 54 295 A1 or DE 198 60 872 A1. Again, the detection of a disc break on the measurement of resistors, so that when a change in resistance of the transparent, electrically conductive coating an alarm signal is output.
  • the object of the present invention is now to provide an improved alarm disk assembly which is simple and inexpensive to manufacture and which is less visually visible.
  • the alarm disc assembly according to the invention is suitable to be produced in a retrofit method with existing discs.
  • the object of the present invention is achieved by an alarm disk arrangement according to the independent claim 1. Preferred embodiments will become apparent from the dependent claims.
  • the alarm disk arrangement according to the invention comprises at least:
  • At least one first pane which consists of toughened glass, with an outside surface (I) and an inside surface (II),
  • the transmitting unit has at least one high-frequency voltage signal with a frequency f of 0.1 GHz transmits up to 6 GHz to the antenna and the antenna emits electromagnetic radiation of frequency f and the evaluation unit measures the impedance matching of the transmitting unit to the antenna, wherein
  • the transparent, electrically conductive coating has at least one region with at least one coating-free structure, and the region at least partially overlaps the area of the orthogonal projection of the antenna onto the transparent, electrically conductive coating, preferably at least in sections, and particularly preferably completely, and encloses the antenna with the antenna transparent, electrically conductive coating is electromagnetically coupled, and the sensor unit emits an alarm signal in case of deviations of the measured impedance matching of a comparison value.
  • the antenna with the structured, transparent, electrically conductive coating is electromagnetically coupled, ie with the transparent, electrically conductive coating having the coating-free structures.
  • the invention is based on the recognition that many disks and in particular insulating glass panes have transparent coatings with a good electrical conductivity. These transparent, electrically conductive coatings have a variety of tasks: for example, to reflect infrared radiation or low-e Properties.
  • the alarm disc assembly according to the invention comprises a sensor unit which monitors the integrity of the disc with a sensor without contact and outputs an alarm signal when the disc breaks.
  • the non-contact monitoring eliminates a complex contacting of the transparent, electrically conductive coating.
  • Such contacts are usually soldered and highly susceptible to aging, since the contact resistance at the soldering changes by aging processes. In the monitoring method presented here, this is not a problem since the direct electrical contacting of the transparent, electrically conductive coating is eliminated.
  • an existing, transparent, electrically conductive coating can be used, there is no need for a separate production step, for example for printing on an electrical conductor loop.
  • the transparent, electrically conductive coating is hardly visible visually and therefore very aesthetic. It may, for example, also have antireflective properties and improve the transparency through the glass. All this was unexpected and surprising to the inventors.
  • the invention is further based on the fact that the transparent, electrically conductive coating has at least one region with at least one coating-free structure. This area is arranged in the coupling region of the antenna with the transparent, electrically conductive coating.
  • the first disk has only electrically conductive elements or coatings which are transparent.
  • the first disk has no further electrically conductive elements except the transparent, electrically conductive coating or further transparent, electrically conductive coating.
  • the shape, dimensions and number of coating-free structures are tuned to interact with the electromagnetic radiation emitted by the antenna and affect the impedance matching of the antenna to the antenna system and the transparent, electrically conductive coating with non-coating areas ,
  • a change in the coating-free structures or the transparent, electrically conductive Coating in their environment and in particular in the surrounding area causes a significant change in the impedance matching, so that such changes can be measured with high accuracy and sensitivity.
  • the first pane If the first pane is damaged during an impact on the first pane, for example during an attempted break-in, an impact of a foreign body such as a stone or any other type of force, it will break up into small fragments due to its prestress. The fragments cause a change in the electrical conductivity of the transparent, electrically conductive coating with the coating-free structures. As a result, there is a significant change in the impedance matching. If the first disk in the coupling area is completely removed, the impedance matching changes drastically.
  • the impedance matching likewise changes drastically due to the lack of coating-free structures. Due to the characteristic influence of the coating-free structures on the impedance matching a manipulation of the alarm disc assembly is almost impossible. At the same time, because of their small dimensions and low optical contrast to the transparent, electrically conductive coating, the coating-free structures are hardly noticeable visually and do not disturb the aesthetic appearance of the first pane.
  • the sensor unit with antenna is also very small and can be easily laminated, for example, in the edge region of the first pane.
  • the region with the at least one coating-free structure is at least partially overlapping with the surface resulting from orthogonal projection of the antenna onto the transparent, electrically conductive coating.
  • the area with the at least one coating-free structure comprises, at least in sections, the area which extends through orthogonal projection of the antenna results in the transparent, electrically conductive coating.
  • the area with the at least one coating-free structure completely comprises the area resulting from orthogonal projection of the antenna onto the transparent, electrically conductive coating.
  • An alarm disk arrangement comprises at least one first disk with an outside surface (I) and an inside surface (II).
  • the first pane usually serves to separate an exterior space from an interior, for example a building, a showcase or a vehicle.
  • the outside surface (I) In the case of using the alarm disc assembly to protect an interior from theft or damage, the outside surface (I) would be the so-called attack side of which usually intrusion occurs. In this case, the inside surface (II) would be protected against manipulation with the inductive sensor and the sensor unit, since they would be accessible only after breaking and removing the first disc.
  • the inside surface (II) may also be exposed to potential attacks, such as destruction with an emergency hammer in case of danger. In this case, no deliberate manipulation of the sensor unit is assumed.
  • the outside surface (I) of the first pane can also have a further coating, for example a further transparent, electrically conductive coating.
  • the sensitivity of the sensor can be so it is chosen that only the integrity of the transparent, electrically conductive coating on the inside surface (II) of the first pane is monitored, or additionally the integrity of the further transparent, electrically conductive coating on the outside surface (I) of the first pane is monitored ,
  • the transparent, electrically conductive coating is connected to the first pane in such a way that if the first pane breaks, the transparent, electrically conductive coating is damaged.
  • the transparent, electrically conductive coating is preferably deposited directly on the inside surface (II) of the first pane, particularly preferably as a thin-film stack.
  • Particularly suitable methods are sputtering ((magnetron) sputtering), chemical vapor deposition (CVD) and / or thermal evaporation. This is particularly advantageous in order to enable reliable detection of a fracture of the first disk.
  • the detection of a rupture of the first disc, or the associated damage to the transparent, electrically conductive coating takes place via a sensor unit with an antenna.
  • the antenna emits electromagnetic radiation at a frequency f.
  • the sensor unit contains a transmitting unit, an antenna and an evaluation unit, wherein the transmitting unit forwards a high-frequency voltage signal with a frequency f to the antenna, the antenna emits electromagnetic radiation of the frequency f and the evaluation unit measures the impedance matching of the antenna to the transmitting unit.
  • the frequency f is a specific frequency, a plurality of specific frequencies, a frequency band or a plurality of frequency bands or a combination thereof, wherein the frequency f is selected from the range of 0.1 GHz to 6 GHz, preferably from 0.4 GHz to 3 GHz and in particular from 0.8 GHz to 3 GHz.
  • the invention is based on the principle that the antenna is coupled to the structured, transparent, electrically conductive coating and in particular is electromagnetically coupled, and the sensor unit in case of deviations of the measured impedance matching of the transmitting unit and the antenna and in particular the antenna with an electromagnetically coupled structured, transparent, electrically conductive coating emits an alarm signal from a comparison value.
  • the measured impedance matching of the transmitting unit to the arrangement of antenna, first pane and transparent, electrically conductive coating on the first pane can be determined by any suitable measuring method.
  • the impedance matching can advantageously be measured via the standing wave ratio (SWR) between the amplitude of the signal V sent to the antenna and the signal R reflected by the antenna.
  • SWR standing wave ratio
  • the amplitudes of the signal can be measured, for example, as a voltage and reproduce the voltage standing wave ratio (VSWR).
  • VSWR voltage standing wave ratio
  • Suitable electronic circuits for measuring the standing wave ratio are well known to those skilled in the art, for example, by a maxim integrated integrated circuit "LF-t.o-2.5GHz Dual Logarithmic Detector / Controller for Power, Gain, and VSWR Measurements" (MAX2016).
  • the sensor unit outputs an alarm signal when the measured voltage VSWR deviates from the comparison value of more than 1.5: 1, preferably more than 2: 1 and more preferably more than 3: 1.
  • the VSWR is a measure of how well the RF signal can be radiated from the antenna.
  • the impedance matching may advantageously be measured via the SU parameter of the sender unit and antenna connected thereto.
  • the SU parameter is a measure of how well the radio frequency signal can be radiated from the antenna.
  • the sensor unit outputs an alarm signal when the measured S1 1 parameter deviates from the comparison value of more than one decibel (1 dB), preferably more than 3 dB, particularly preferably more than 5 dB.
  • the impedance matching of the transmitting unit to the arrangement of antenna, first pane and transparent, electrically conductive coating with the coating-free structures is very sensitive to the arrangement and the integrity of the transparent, electrically conductive coating with the coating-free structures.
  • a large detuning of the impedance matching takes place. That is, the measured impedance signal changes greatly.
  • the impedance matching is thus a good and sensitive indicator for measuring the integrity of the first disc and the entire alarm disc assembly and detecting attempts to break in or tamper with.
  • the first disk breaks due to its bias in a large number of small fragments over the entire first disc away.
  • the associated damage to the transparent, electrically conductive coating with the coating-free structures can be detected by the alarm disk arrangement with high accuracy and security.
  • Substitution of the transparent, electrically conductive coating with the coating-free structures by attaching a metal foil or a metal plate, for example of aluminum or copper at the position of the electrically conductive coating can with high accuracy and security of the intact transparent, electrically conductive coating with the coating-free structures are distinguished.
  • the inventive Alarm disk arrangement is very well suited for the detection of damage, burglary attempts or other manipulation attempts.
  • the antenna is electrically isolated from the transparent, electrically conductive coating.
  • the distance a between the antenna and the transparent, electrically conductive coating is from 0.1 mm to 20 mm, preferably from 0.2 mm to 10 mm and in particular from 0.5 mm to 5 mm.
  • suitable antennas are used.
  • simple line antennas, loop antennas, planar antennas, monopole antennas and / or dipole antennas are advantageous.
  • Particularly suitable are line antennas as a monopole antenna with a length b of 10 mm to 100 mm and a width of 0.5 mm to 5 mm, since they are visually inconspicuous and easy to integrate.
  • the first disc is made of toughened glass.
  • it is pretensioned in such a way that, when the first disc breaks, the fragments are smaller, preferably 5 times smaller, more preferably 10 times smaller than a detection range of the antenna. If the fragments are smaller, for example because they have a smaller area than the detection area or a smaller maximum diameter than the detection area, it is ensured that at least one break line lies in the detection area of the sensor, which enables a reliable detection of a fracture of the first pane.
  • the antenna has a length b and the detection range of the antenna comprises at least one circle with a diameter d of more than 0.5 * b, preferably more than 1 * b, particularly preferably more than 3 * b and in particular from 0.5 * b to 3 * b, wherein the circle center MK is defined by orthogonal projection of the center of the antenna MA on the inside surface (II) of the first disc.
  • the length b is defined by the maximum dimension of the longest dimension.
  • the fragments are smaller than the coating-free structures.
  • the average maximum diameter of a fragment is smaller than the maximum dimension w of the coating-free structure or, in the case of different sized coating-free structures, the average maximum diameter of a fragment is smaller than the largest maximum dimension w of the coating-free structures.
  • the coating-free structure has the shape of a rectangle, a rhombus, a trapezoid and in particular a square.
  • the coating-free structures may have the shape of a cross, an oval or a circle.
  • the coating-free structures may be in the form of a hexagon, in particular a regular hexagon having sides of the same length or an octagon, in particular a regular octagon.
  • the coating-free structures according to the invention have a line width g of 0.5 mm to 3.0 mm and preferably of 0.8 mm to 0.21 mm.
  • the coating-free structure is completely surrounded by the transparent, electrically conductive coating.
  • the coating-free structure is completely surrounded by the transparent electrically conductive coating in the region of its outer edge and its inner edge.
  • the coating-free structure consists of a double structure or a multiple structure of an outer coating-free structure and at least one inner coating-free structure. Between the two structures is completely or partially arranged the transparent, electrically conductive coating.
  • the outer coating-free structure and the inner coating-free structure have in particular the same shape.
  • the outer coating-free structure and the inner coating-free structure are arranged concentrically to one another. This means that both coating-free structures have a common center and, given the same shape, a constant distance between the coating-free lines of the structure.
  • the line width g of the outer coating-free structure and the inner coating-free structure is advantageously from 10 ⁇ to 1000 ⁇ , preferably from 10 ⁇ to 200 ⁇ and particularly preferably from 10 ⁇ to 1 10 ⁇ .
  • Such wide lines are particularly easy to structure in a single laser Ab harshungsvorgang and therefore particularly inexpensive and at the same time very aesthetically.
  • the distance v between the inner coating-free structure and the outer coating-free structure is from 0.3 mm to 2.5 mm, preferably from 0.5 mm to 2.0 mm and particularly preferably from 1.0 mm to 1, 6 mm.
  • dual structures are much faster and easier to manufacture, for example, with a one-time laser decoating pass for the outer, coating-free structure and a single laser decoating pass for the inner, coating-free structure. Simultaneous is a coating-free Double structure more aesthetically and visually less disturbing than a corresponding broad individual structure.
  • the outer and inner coating-free structures of a coating-free double structure have the shape of a rectangle, a rhombus, a trapezium and in particular a square.
  • the outer and inner coating-free structures may have the shape of a cross, an oval or a circle.
  • the outer coating-free structure is completely surrounded by the transparent, electrically conductive coating.
  • the outer coating-free structure is completely surrounded by the transparent electrically conductive coating in the region of its outer edge.
  • the inner coating-free structure is completely surrounded by the transparent, electrically conductive coating at its inner edge.
  • the intermediate region between the outer coating-free structure and the inner coating-free structure is completely filled with the transparent, electrically conductive coating.
  • the inner region of the inner coating-free structure is completely with the transparent, electrically conductive Coating filled or has only one or more further double structures of further, smaller outer coating-free structures and other, smaller internal coating-free structures.
  • the outer coating-free structure and the inner coating-free structure are connected to one another by at least one additional coating-free line and preferably by 2 to 100 additional coating-free lines.
  • the additional coating-free line is preferably arranged in a straight line and / or orthogonal to the coating-free structures.
  • the spacing of the lines is preferably less than a quarter of the wavelength ⁇ of the high-frequency electromagnetic radiation, and particularly preferably from ⁇ / 20 to ⁇ / 500.
  • the additional coating-free line may have a curved and, for example, a sinusoidal shape.
  • the additional coating-free lines have the particular advantage that less disturbing field-induced currents can form between the outer, coating-free structure and the inner, coating-free structure.
  • the area of the additional coating-free lines between the outer coating-free structure and the inner coating-free structure is from 0.1% to 25% and preferably from 1% to 5% of the area of the intermediate area between the outer coating-free structure and the inner coating-free structure.
  • a plurality of coating-free structures having the same or different shapes are arranged in the region in the transparent, electrically conductive coating of the first pane.
  • the minimum distance h between adjacent coating-free structures is from 1 mm to 100 mm and preferably from 1 mm to 20 mm.
  • at least two adjacent coating-free structures can be connected to one another without coating. In combination means that two or more coating-free structures are interconnected and further adjacent coating-free structures have a minimum distance h to it.
  • the dimensions of the coating-free structures and in particular the maximum dimensions w of the coating-free structure is preferably from 10 mm to 150 mm.
  • the maximum dimensions w are tuned to the frequency band or bands that the antenna emits. Furthermore, the maximum dimensions w are dependent on the wavelength of the high-frequency electromagnetic radiation, the sheet resistance of the transparent, electrically conductive coating and the effective relative permittivity s e f and the thickness of the first disk.
  • the maximum dimensions w are preferably from 35 mm to 120 mm and particularly preferably from 40 mm to 60 mm. In the range of 1.8 GHz, the maximum dimensions w are preferably from 15 mm to 35 mm. The optimum maximum dimension w with low transmission loss with sufficient bandwidth can be determined by the skilled person in the context of simple simulations and experiments.
  • the maximum dimensions w are preferably approximately ⁇ / (4 * ⁇ ⁇ ⁇ // ).
  • the sides of the coating-free structures are preferably orthogonal to the orientation of the antenna in the case of rectangular, square or trapezoidal shapes.
  • Horizontal lines of the coating-free structures are particularly advantageous in the installed position, since they are less visually disturbing and cause less stray light and reflections than non-horizontal or non-vertical lines.
  • the area surrounding the coating-free structures has at least 5, preferably from 5 to 10,000, and particularly preferably from 9 to 100, coating-free structures.
  • all or a plurality of the coating-free structures are connected to one another via a coating-free region.
  • they Preferably, they form a regular or irregular grid.
  • Such grid-like structures are particularly simple and fast to produce.
  • the stripping of the coating-free structures in the transparent, electrically conductive coating preferably takes place by means of a laser beam.
  • Methods for structuring thin metal films are known, for example, from EP 2 200 097 A1 or EP 2 139 049 A1.
  • the width of the stripping is preferably from 10 ⁇ to 1000 ⁇ , more preferably 25 ⁇ to 300 ⁇ and in particular 70 ⁇ to 140 ⁇ . In this area, a particularly clean and residue-free removal by the laser beam takes place.
  • the stripping by means of a laser beam is particularly advantageous because the stripped lines are optically very inconspicuous and affect the appearance and transparency only slightly.
  • the stripping of a line of width g which is wider than the width of a laser cut, is carried out by repeatedly tracing the line with the laser beam.
  • the process duration and the process costs therefore increase with increasing line width.
  • the stripping can be carried out by mechanical removal as well as by chemical or physical etching.
  • the sensor unit is arranged on the inside of the first disk, ie on the side which is defined by the inside surface (II) of the first disk. This is Particularly advantageous to protect the sensor unit from damage and manipulation attempts from the attack side, ie from the side of the first disc, which is defined by the outside surface (I).
  • the sensor unit according to the invention may comprise further electronic components in addition to the antenna and the evaluation unit.
  • the sensor unit comprises a comparator which compares the signal of the evaluation unit with a comparison or threshold value and outputs an alarm signal in the case of a corresponding deviation from the reference value.
  • the alarm signal can be supplied via an output stage of a further signal processing.
  • the sensor unit has an alarm transmission unit, preferably a radio alarm transmission unit with a radio signal whose frequency is in the range from 100 kHz to 100 GHz.
  • the radio alarm transmission unit is particularly preferably a Bluetooth transmitter or a WLAN transmitter.
  • the alarm sending unit may also be an infrared transmitter.
  • the alarm transmission unit is used for communication with a receiver and in particular for emitting an alarm signal when the sensor unit detects a breakage of the disk.
  • the integration of an alarm transmission unit has the particular advantage that the sensor unit requires no external supply lines for passing on the alarm signal and thereby a very simple, inexpensive and location-independent installation is possible. Furthermore, eliminates a possibility of manipulation of the sensor unit, whereby the security is increased.
  • the receiver communicating with the alarm transmission unit is arranged on the same side of the first disk as the alarm transmission unit and the antenna, namely on the inside of the first disk.
  • the receiver can be arranged on any side of the first disk, provided the first disk with the transparent, electrically conductive coating or its surroundings for the signal of the transmitter is sufficiently permeable.
  • the sensor unit contains a power supply, preferably a battery, an accumulator, a supercapacitor, a thermoelectric generator and / or a solar cell.
  • the sensor unit advantageously contains no supply lines to an external power supply, but is energy self-sufficient.
  • the power supply can be done or supplemented by continuous or discontinuous charging via, for example, an inductive charging device. This has the particular advantage that the sensor unit requires no external leads and thus a very simple, inexpensive and location-independent installation is possible. Furthermore, eliminates a possibility of manipulation of the sensor unit, whereby the security is increased. This is particularly advantageous for the use or retrofitting of the sensor unit in an insulating glass unit, which is usually completed to the outside.
  • the alarm disc arrangement according to the invention can be used as a single disc or be part of a multi-pane glazing, for example part of an insulating glazing, double-glazing, triple-glazed glazing,
  • the first disk is connected to at least one other spacer via at least one spacer, preferably a spacer which completely surrounds the edge of the disk.
  • the spacer is located between the first disc and the other disc and is preferably fixed by a bond between spacers and discs.
  • the spacer preferably comprises at least one hollow base body with at least two parallel wheel contact walls, an outer wall with a gas-tight insulation layer and a glazing inner wall.
  • Polymer base bodies preferably contain polyethylene (PE), polycarbonates (PC), polypropylene (PP), polystyrene, polybutadiene, polynitriles, polyesters, polyurethanes, polymethylmethacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), particularly preferably acrylonitrile.
  • PE polyethylene
  • PC polycarbonates
  • PP polypropylene
  • polystyrene polybutadiene
  • polynitriles polyesters
  • polyurethanes polymethylmethacrylates
  • polyacrylates polyamides
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • ABS butadiene-styrene
  • ASA acrylic ester-styrene-acrylonitrile
  • ABS / PC acrylonitrile-butadiene-styrene - polycarbonate
  • SAN styrene-acrylonitrile
  • PET / PC PBT / PC and / or copolymers or blends thereof
  • Polymeric base bodies may optionally also contain other constituents, such as glass fibers.
  • the polymeric materials used are usually gas-permeable, so that if this permeability is not desired further measures must be taken.
  • Metallic bodies are preferably made of aluminum or stainless steel and preferably have no gas permeability.
  • the walls of the body are gas-permeable in an advantageous embodiment. Areas of the body in which such a permeability is not desired, for example, be sealed with a gas-tight insulation layer. Particularly polymeric base bodies are used in combination with such a gas-tight insulation layer.
  • the main body preferably has a hollow chamber which contains a desiccant, preferably silica gel, CaCl 2 , Na 2 SO 4 , activated carbon, silicates, bentonites, zeolites and / or mixtures thereof, particularly preferably molecular sieves.
  • a desiccant preferably silica gel, CaCl 2 , Na 2 SO 4 , activated carbon, silicates, bentonites, zeolites and / or mixtures thereof, particularly preferably molecular sieves.
  • the outer gap between the first disc, another disc and spacer is preferably sealed by at least one sealant to the disc outer space.
  • the sealant preferably contains organic polysulfides, silicones, RTV (space-temperature-curing) silicone rubber, HTV (high-temperature curing) silicone rubber, peroxide-crosslinking Silicone rubber and / or addition-crosslinked silicone rubber, polyurethanes, butyl rubber and / or polyacrylates.
  • additives for increasing the aging resistance for example UV stabilizers, may also be present.
  • the first disk is connected via a spacer to a second disk and forms an insulating glass pane with double-glazing.
  • the first disc is connected via its inner surface (II) via the spacer with the second disc.
  • the sensor unit is arranged in a gap between the first disc and the second disc.
  • the antenna is advantageously not located exactly in the middle between the disks, but closer to the first disk to be monitored, which has the transparent, electrically conductive coating. It is understood that in this arrangement, both discs can have a transparent, electrically conductive coating that can be monitored by a common antenna or two antennas.
  • the first disc or the second disc can be connected via a further spacer with another third disc and thus form an insulating glass pane with triple-glazing.
  • the first pane consists of flat glass, float glass, soda-lime glass, quartz glass, or borosilicate glass.
  • the first pane is prestressed, preferably in accordance with DIN 12150-1: Glass in construction - thermally toughened soda lime silicate safety glass - Part 1: Definition and description, particularly preferably with a surface compressive stress of more than 100 N / mm 2 and in particular of 100 N / mm 2 to 150 N / mm 2 . Due to the bias, the first disc shatters in damage preferably in blunt-edged fragments with sizes of less than 1 cm 2 .
  • the second, third or further pane preferably contains glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester , Polyvinyl chloride and / or mixtures thereof.
  • Suitable glasses are known, for example, from EP 0 847 965 B1.
  • the thickness of the first, second, third or further disc can vary widely and so perfectly adapted to the requirements of the case. It is preferred to use disks with the standard thicknesses of 1.0 mm to 50 mm and preferably of 3 mm to 16 mm. The size of the disc can vary widely and depends on the size of the use according to the invention.
  • the first disk has dielectric properties and a relative permittivity of 6 to 8 and in particular of about 7.
  • the discs may have any three-dimensional shape.
  • the three-dimensional shape has no shadow zones, so that it can be coated, for example, by sputtering.
  • the disks are planar or slightly or strongly bent in one direction or in several directions of the space.
  • the discs can be colorless or colored.
  • the first pane is connected over its outside surface (I) and at least one intermediate layer, preferably a thermoplastic intermediate layer, to a composite pane with a second pane.
  • the second disk can in turn be connected in area with another third disk via a further intermediate layer.
  • the second and / or the third Disc preferably contains a plastic.
  • Such composite discs are particularly breakthrough stable against external intrusion, so that it is possible to achieve high security classes.
  • the discs of the composite disc are connected to each other by at least one intermediate layer.
  • the intermediate layer preferably contains a thermoplastic such as polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET) or multiple layers thereof, preferably with thicknesses of 0.3 mm to 0.9 mm.
  • a thermoplastic such as polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET) or multiple layers thereof, preferably with thicknesses of 0.3 mm to 0.9 mm.
  • the transparent, electrically conductive coating is arranged at least 70%, preferably 80% to 100% and particularly preferably 98% to 100% of the viewing surface of the first pane.
  • the see-through area is the area of the first pane, where the view is not prevented by the frame, spacers or other attachments.
  • the transparent, electrically conductive coating is arranged at least 50%, preferably at least 70%, particularly preferably 80% to 100% and in particular 95% to 99% of the area of the inside surface of the first pane.
  • a narrow, peripheral edge region of the first pane can be free from coatings in order to avoid edge-penetrating corrosion of the transparent, electrically conductive coating.
  • the transparent, electrically conductive coating according to the invention is permeable to electromagnetic radiation, preferably electromagnetic radiation of a wavelength of 300 to 1,300 nm, in particular for visible light of 390 nm to 780 nm.
  • Permeable means that the overall transmission of the disk is permeable to> 70% and especially> 75%, preferably for visible light, and for certain applications a lower transmission may be desired, for which "transmissive” may also mean 10% to 70% light transmission , Such applications are, for example, glazing for the protection of objects that should not be exposed to large amounts of light, for example paintings or textiles.
  • the transparent, electrically conductive coating is preferably a functional coating, particularly preferably a functional coating with sunscreen Effect.
  • a coating with a sunscreen effect has reflective properties in the infrared range and thus in the range of solar radiation. As a result, a heating of the interior of a vehicle or building due to solar radiation is advantageously reduced.
  • Such coatings are known to the person skilled in the art and typically contain at least one metal, in particular silver or a silver-containing alloy.
  • the transparent, electrically conductive coating may comprise a sequence of a plurality of individual layers, in particular at least one metallic layer and dielectric layers containing, for example, at least one metal oxide.
  • the metal oxide preferably contains zinc oxide, tin oxide, indium oxide, titanium oxide, silicon oxide, aluminum oxide or the like and combinations of one or more thereof.
  • the dielectric material may also include silicon nitride, silicon carbide or aluminum nitride.
  • This layer construction is generally obtained by a series of deposition processes performed by a vacuum process such as magnetic field assisted sputtering.
  • a vacuum process such as magnetic field assisted sputtering.
  • metal layers which in particular contain titanium or niobium.
  • the lower metal layer serves as an adhesion and crystallization layer.
  • the upper metal layer serves as a protective and getter layer to prevent a change of the silver during the further process steps.
  • Particularly suitable transparent, electrically conductive coatings comprise at least one metal, preferably silver, nickel, chromium, niobium, tin, titanium, copper, palladium, zinc, gold, cadmium, aluminum, silicon, tungsten or alloys thereof, and / or at least one metal oxide layer , preferably tin-doped indium oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO, SnO 2 : F), antimony-doped tin oxide (ATO, SnO 2 : Sb), and / or carbon nanotubes and / or optically transparent, electrically conductive polymers, preferably poly (3,4-ethylenedioxythiophene), polystyrene sulfonate, poly (4,4-dioctylcylopentadithiophene), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, mixture
  • the thickness of the transparent, electrically conductive coating can vary widely and be adapted to the requirements of the individual case. It is essential that the thickness of the transparent, electrically conductive coating may not be so high that it is suitable for electromagnetic radiation, preferably electromagnetic Radiation of a wavelength of 300 nm to 1,300 nm and in particular visible light of 390 nm to 780 nm, impermeable.
  • the transparent, electrically conductive coating preferably has a layer thickness of 10 nm to 5 ⁇ m and more preferably of 30 nm to 1 ⁇ m.
  • the sheet resistance of the transparent, electrically conductive coating is preferably from 0.35 ohms / square to 200 ohms / square, preferably 0.5 ohms / square to 200 ohms / square, most preferably from 0.6 ohms / square to 30 ohms / square Square, and in particular from 2 ohms / square to 20 ohms / square.
  • the transparent, electrically conductive coating may in principle have even lower surface resistances than 0.35 ohms / square, especially if only a small amount of light transmission is required during their use. Such surface resistances are particularly suitable for detecting damage to the electrically conductive coating in the event of breakage of the first pane.
  • the transparent, electrically conductive coating preferably has good infrared-reflecting properties and / or particularly low emissivities (low-E).
  • a further aspect of the invention comprises a method for operating an alarm disk arrangement according to the invention, wherein the measuring signal is measured continuously or periodically, preferably with a period of 0.2 s to 100 s, and output as an output signal from the sensor unit.
  • the output of the output signal can be carried out continuously or periodically, preferably with a period of 0.2 s to 100 s.
  • a further aspect of the invention comprises a use of an alarm pane arrangement according to the invention as glazing of a showcase, a showcase, preferably for protecting valuable goods such as paintings, textiles, jewelery, for example in a museum or a jeweler, or as architectural glazing, double glazing, double glazing, triple-insulating glass,
  • Another aspect of the invention comprises a use of a sensor unit according to the invention with an antenna for retrofitting a glazing with a first Tempered glass panes and transparent, electrically conductive coating on the inside surface (II) to an alarm disk arrangement.
  • FIG. 1 shows a schematic representation of an alarm disk arrangement according to the invention in a plan view
  • FIG. 1A a cross-sectional view along the section line A-A 'of Figure 1A; a schematic representation of a sensor unit according to the invention; an enlarged view of the section Z of the inventive transparent, electrically conductive coating with coating-free structures in an undamaged first disc;
  • Figure 3G is an enlarged view of a square, coating-free structure of Figure 3E;
  • Figure 3H is an enlarged view of an alternative coating-free
  • Figure 4A is a schematic representation of an alternative invention
  • FIG. 4B is a cross-sectional view taken along section line A-A 'of FIG
  • FIG. 1A shows a schematic representation of an alarm disk arrangement 10 according to the invention in a plan view of the outside surface I.
  • FIG. 1B shows a cross-sectional view along the section line A-A 'of FIG.
  • the alarm disc assembly 10 separates an interior from an external environment.
  • the alarm disk assembly 10 is suitable for example to protect valuables in the interior, for example in a showcase, in a museum or at a jeweler from external access.
  • the alarm disk arrangement 10 comprises a first pane 1 on whose inside surface II a transparent, electrically conductive coating 3 is arranged.
  • the transparent, electrically conductive coating 3 is arranged in this example on the entire inside surface II of the first disc 1, minus a marginal stripping with a width of, for example, 10 mm from the disc edge of the first disc 1.
  • the edge deletion serves to protect against corrosion by penetrating moisture over the edge of the pane.
  • the transparent, electrically conductive coating 3 serves, for example, as an infrared-reflecting layer. This means that the amount of heat radiation from incoming sunlight is reflected to a large extent. When using the first pane 1 in architectural glazing, this ensures a reduced heating of the interior when exposed to sunlight.
  • the transparent, electrically conductive coating 3 is known, for example, from EP 0 847 965 B1 and contains two silver layers, each between a plurality of metal and metal oxide layers are embedded.
  • the transparent electrically conductive coating 3 has a sheet resistance of about 4 ohms / square.
  • the first pane 1 is, for example, a prestressed soda-lime glass pane with a width of 1 m, a length of 1.5 m and a thickness of 4 mm.
  • the first pane 1 is prestressed according to DIN 12150-1 with a surface compressive stress of, for example, 120 N / mm 2 . Due to the bias, the first disc shatters when damaged in blunt-edged fragments with sizes of less than 1 cm 2 .
  • a sensor unit 20 is arranged on the inside of the first pane 1.
  • Inner side here means the region which faces the inside surface II, on which the transparent, electrically conductive coating 3 is arranged.
  • the sensor unit 20 has an antenna 21, which is coupled to the transparent, electrically conductive coating 3. It is understood that the antenna 21 need not necessarily be installed in the same housing as the remaining sensor unit 20.
  • the distance a of the antenna 21 from the transparent, electrically conductive coating 3 is for example 0.5 mm.
  • the antenna 21 and the transparent, electrically conductive coating 3 are electrically isolated from each other.
  • An evaluation unit 20.2 in the sensor unit 20 measures the impedance matching of the transmission unit 20.1. to the antenna 21 of this arrangement and compares the measured value with a comparison value.
  • the comparison value is determined in the undamaged first disc 1 with undamaged transparent, electrically conductive coating 3.
  • the sensor unit 20 determines the deviation, ie the difference, of the measurement signal of the evaluation unit 20. 2 with the comparison value and outputs an alarm signal for deviations which are greater than a defined tolerance.
  • the alarm signal is, for example, a voltage or voltage pulse having a certain level and / or pulse duration different from another neutral output signal, whereby an alarm condition can be identified. Such a deviation typically results in the fracture of the first disk 1 and a concomitant damage to the transparent, electrically conductive coating 3.
  • the alarm signal is forwarded, for example via an alarm transmission unit not shown here to a receiver to be converted there into an acoustic signal or to make an emergency call.
  • FIG. 2 shows a schematic representation of a sensor unit 20 according to the invention.
  • the sensor unit 20 has an antenna 21.
  • the antenna 21 is connected via leads to a transmitting unit 20.1 and an evaluation unit 20.2.
  • the distance a is the distance of the antenna 21 from the transparent, electrically conductive coating 3.
  • the sensor unit 20 has, for example, several stages of construction: the antenna 21 is connected to a transmitting unit 20.1.
  • the transmitting unit 20.1 is connected via an evaluation unit 20.2 to a comparator 20.3.
  • the comparator 20.3 compares the measurement signal with a comparison value and, if appropriate, outputs an alarm signal via the output stage 20.4 at the output 22. For example, the VSWR VSWR or S1 1 parameter is measured.
  • the detection range 25 is determined in which changes in the transparent, electrically conductive coating 3 can be measured particularly accurately.
  • the antenna 21 in this example is a dipole antenna and has a length b of 55 mm.
  • the detection area 25 is here, for example, a circle with a diameter d of 1, 1 * b, ie of about 60 mm, wherein the circle center MK defined by orthogonal projection of the center MA of the antenna 21 on the inside surface (II) of the first disc 1 is.
  • FIG. 3A shows an enlarged view of the section Z of the transparent, electrically conductive coating 3 according to the invention with coating-free structures 4, using the example of linear coating-free structures 4, 7 in the case of an undamaged first pane 1.
  • the linear coating-free structures 4.7 are arranged in each case in three rows with six columns, which is also referred to below as 3 ⁇ 6 grid. In the area 9, 18 line-shaped coating-free structures 4. 7 are thus arranged in the transparent, electrically conductive coating 3.
  • Each linear coating-free structure 4.7 has a maximum dimension w of 15 mm, which corresponds to its length, and a line width g of 1 mm.
  • the transparent, electrically conductive coating 3 is undamaged, in particular in the detection region 25 of the antenna 21.
  • FIG. 3B shows an enlarged view of the detail Z of the transparent, electrically conductive coating 3 according to the invention with coating-free structures 4, 4, 7 in the case of a broken first pane 1.
  • the arrangement of the coating-free structures 4, 4, 7 is selected such that at least one break line 30 and, as a rule, a multiplicity of break lines 30 run through the first pane 1 below the coating-free structures 4 and the surrounding, transparent, electrically conductive coating 3.
  • the coupling of the antenna 21 to the transparent, electrically conductive coating 3 with coating-free structures 4 changes sensitively, which is accompanied by a high change in the impedance matching of the antenna 21.
  • FIG. 3C shows an enlarged view of the section Z of an alternative transparent, electrically conductive coating 3 with coating-free structures 4 with an undamaged first pane 1.
  • the transparent, electrically conductive coating 3 here has a 3 ⁇ 3 grid of square coating-free structures 4.1.
  • the maximum dimension w here corresponds to the edge length of the square coating-free structures 4.1 and is 15 mm.
  • the line width g is, for example, 0.8 mm.
  • FIG. 3D shows an enlarged illustration of the section Z of the alternative inventive transparent, electrically conductive coating 3 with coating-free structures 4 on FIG. 3C in the case of a broken first pane 1.
  • 3E shows an enlarged representation of the section Z of a further alternative transparent, electrically conductive coating 3 with coating-free structures 4 with an undamaged first pane 1.
  • the coating-free structures 4 are here, for example, an alternating sequence of square coating-free structures 4.1, circular coating-free structures 4.2, cross-shaped coating-free structures 4.3, elliptical coating-free structures 4.4, rectangular coating-free structures 4.5 and hexagonal coating-free structures 4.6.
  • Each cross-shaped coating-free structure 4.3 has a maximum dimension w of, for example, 15 mm and a line width g of, for example, 2 mm.
  • Each circular coating-free structure 4.2 has a maximum dimension w of, for example, 19 mm, which corresponds to its diameter, and a line width g of, for example, 1.5 mm.
  • Each elliptical coating-free structure 4.4 has a maximum dimension w of, for example, 17 mm, which corresponds to its diameter along the longer semiaxes, and a line width g of, for example, 1.5 mm.
  • Each hexagonal coating-free structure 4.3 has a maximum dimension w of, for example, 17 mm, which corresponds to its maximum diameter, and a line width g of, for example, 1.2 mm.
  • the regions in all of the embodiments shown here or in all other embodiments could have different numbers of rows and columns.
  • mxn-shaped screens with m from 1 to 10,000 and n from 1 to 10,000, preferably with m from 10 to 500 and n from 1 to 500 or with m from 1 to 500 and n from 10 to 500 can be used.
  • the grid or the area 9 also need not be square or rectangular. Rather, the coating-free structures 4 form a diamond-shaped, circular or any - even unbalanced - area 9.
  • the invention is not limited to a rigid grid having equidistant spacings between adjacent non-coated structures 4, see FIG. 3F.
  • FIG. 3F shows an enlarged illustration of the section Z of a further alternative transparent, electrically conductive coating 3 with coating-free structures 4 with an undamaged first pane 1.
  • the coating-free structures 4 comprise, for example, square coating-free structures 4.1, circular coating-free structures 4.2, and cross-shaped coating-free structures 4.3 are arranged here with different distances to each other and not rasterformig.
  • a circular, coating-free structure 4.2 is connected without coatings to a cross-shaped, coating-free structure 4.3. That is, there is a location or subregion where there is no transparent electrically conductive coating 3 between structures 4.2, 4.3.
  • FIG. 3G shows an enlarged view of a square, coating-free structure 4.1 from FIG. 3E.
  • the coating-free structure 4.1 is a single structure which is completely free of the transparent, electrically conductive coating 3 in its interior.
  • the square coating-free structure 4.1 therefore consists of a single coating-free zone 7.
  • the transparent, electrically conductive coating 3 is completely formed and limited only by the coating-free zone 7 of the square coating-free structure 4.1.
  • the line width g is, for example, 0.8 mm.
  • the maximum dimension w corresponds to the edge length and is for example 15 mm.
  • FIG. 3H shows an enlarged view of an alternative coating-free structure 4.1 using the example of a double structure comprising an outer coating-free structure 5.1 and an inner coating-free structure 5.2.
  • the line width g of the outer coating-free structure 5.1 is for example 100 ⁇ .
  • the line width g of the inner coating-free structure 5.1 is, for example also 100 ⁇ .
  • the distance v of the outer coating-free structure 5.1 from the inner coating-free structure 5.2 is, for example, 1.5 mm.
  • the transparent, electrically conductive coating for example, completely formed.
  • the coating-free square structure 4.1 as a single structure from FIG. 3G with a correspondingly large line width g of 0.8 mm shows a similar behavior with respect to the electromagnetic coupling of the antenna 21 with the structured, transparent conductive coating 3 as the coating-free square structure 4.1 as a double structure a line width g of 100 ⁇ each of Figure 3H.
  • the coating-free square structure 4.1 from FIG. 3H has the advantage that, because of the smaller area to be stripped, it is faster and easier to produce in terms of process engineering and has a visually less disruptive effect.
  • the coating-free structure 4 as a double structure with an outer coating-free structure 5.1 and at least one inner coating-free structure 5.2 can also have other shapes, for example the shape of a square, a rectangle, a rhombus, a trapezium, a hexagon, an octagon , a cross, an oval or a circle.
  • FIG. 4A shows a schematic representation of an alternative alarm disk arrangement 10 'according to the invention in a plan view and FIG. 4B shows a cross-sectional view along the section line AA' from FIG. 4A.
  • the alarm disk assembly 10 ' is, for example, an insulating glass panel containing the alarm disk assembly 10 of Figures 1A and 1B.
  • the first disc 1 is connected to a second disc 6 via a circumferential spacer 2.
  • the sensor unit 20 with antenna 21 is here in the space which is formed by the first disc 1, the second disc 6 and the spacer 2, respectively.
  • the sensor unit 20 is glued to the lower portion of the spacer 2 on this example, and thus securely fixed against slipping.
  • the sensor unit 20 includes, for example, an accumulator and a solar cell that charges the accumulator. Furthermore, the sensor unit 20 contains, for example, an alarm transmission unit which sends an alarm signal via a Bluetooth connection to a receiver arranged outside the alarm disk arrangement 10 '(not shown here).
  • the sensor unit 20 is energy self-sufficient and does not require any Supply lines to the outside - neither for the power supply, nor for forwarding an alarm signal.
  • the sensor unit 20 can be easily retrofitted, for example, in an existing insulating glass unit.
  • FIG. 5 shows the diagram of a simulation of the S1 1 parameter as a function of the frequency f of the electromagnetic radiation of an antenna 21 according to the invention.
  • the SU parameter is given in decibels (dB).
  • dB decibels
  • a dashed, vertical auxiliary line is drawn.
  • the curve # 4 shows the simulated course of the S1 1 parameter in an inventive alarm disk arrangement 10 according to FIG. 3H, in which the structured, transparent, electrically conductive coating 3 is arranged at a distance a of 4 mm from the antenna 21.
  • the electrical conductivity of the transparent, electrically conductive coating 3 is here, for example, 2 ohms / square.
  • the antenna 21 is optimized to a frequency f of 2.4 GHz.
  • the S1 1 parameter at 2.4 GHz is -1 1, 2 dB.
  • curve # 2 shows the simulated course of the S1 1 parameter in an alarm disk arrangement in which a full-area, transparent, electrically conductive coating without coating-free regions is arranged at a distance a of 4 mm from the antenna 21.
  • the electrical conductivity of the transparent, electrically conductive coating is here, for example, also 2 ohms / square.
  • the antenna 21 is optimized to a frequency f of 2.4 GHz.
  • the S1 1 parameter at 2.4 GHz is -1.1 dB.
  • curve # 1 shows the course of the S1 1 parameter of the alarm disk arrangement 10 of curve # 4 without the first disk 1 and thus also without structured transparent, electrically conductive coating 3. This corresponds to the case where the first disk 1, for example at a burglary attempt, was completely removed.
  • the S1 1 parameter is lowered to -17.2 dB at a frequency f of 2.4 GHz.
  • curve # 3 shows the course of the S1 1 parameter of the alarm disk assembly 10 of curve # 2, with the first disk 1 with transparent, electrically conductive coating 3 replaced by a 0.2 mm thick square copper plate with an edge length of 60 mm has been.
  • the SU parameter is thereby reduced to -2.7 dB at a frequency f of 2.4 GHz.
  • the simulations show that the impedance matching, simulated here by the SU parameter, is very sensitively dependent on the structure of the alarm disc arrangement and that manipulations on the construction of the alarm disc arrangement can be measured by a change of the impedance matching with a high sensitivity. This was unexpected and surprising to the skilled person.
  • the invention further comprises the following aspects:
  • An alarm disk arrangement (10, 10 ') according to the invention, wherein the sensor unit (20) contains a power supply, preferably a battery, an accumulator, a supercapacitor, a thermoelectric generator and / or a solar cell and preferably no supply lines to an external power supply.
  • a power supply preferably a battery, an accumulator, a supercapacitor, a thermoelectric generator and / or a solar cell and preferably no supply lines to an external power supply.
  • An alarm disc arrangement according to the invention wherein the maximum dimension w of the coating-free structure (4) of ⁇ (1 * e e eeff ) mm to (3 * ⁇ ) / (2 * ⁇ e eff ) mm, where s e t f is the effective relative permittivity and ⁇ is the wavelength of the electromagnetic radiation with frequency f.
  • the transparent, electrically conductive coating (3) contains at least one metal, preferably silver, nickel, chromium, niobium, tin, titanium, copper, palladium, zinc, gold, cadmium, aluminum, silicon, tungsten or alloys thereof , and / or at least one metal oxide layer, preferably tin-doped indium oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO, SnO 2 : F), antimony-doped tin oxide (ATO, SnO 2 : Sb) , and / or carbon nanotubes and / or optically transparent, electrically conductive polymers, preferably poly (3,4-ethylenedioxythiophene), polystyrene sulfonate, poly (4,4-dioctylcylopentadithiophene), 2,3-dichloro-5,6-dicyano-1
  • An inventive alarm disk arrangement wherein the transparent, electrically conductive coating (3) to at least 50%, preferably at least 70%, more preferably 80% to 100% and in particular 95% to 99% of the surface of the inside surface (II) of the first disc ,
  • a alarm disk arrangement as glazing a showcase, a showcase, preferably for the protection of valuable goods, for example in a museum or a jeweler, or as architectural glazing, double glazing, triple glazing, fire-resistant glazing, safety glazing or as glazing in one Vehicle by land, sea or air, such as a motor vehicle, bus, train or plane.
  • antenna 21 a distance between antenna 21 and transparent, more electrically conductive

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Abstract

La présente invention concerne un ensemble vitre à alarme (10,10'), comprenant : - au moins une première vitre (1) constituée de verre trempé, une surface côté extérieur (I) et une surface côté intérieur (II), - au moins un revêtement électroconducteur transparent (3) appliqué sur la surface côté intérieur (II) de la première vitre (1) et - une unité détecteur (20) équipée d'une unité émettrice (20.1), d'une antenne (21) et d'une unité d'évaluation (20.2), l'unité émettrice (20.1) transmettant au moins un signal de tension haute fréquence, présentant une fréquence f comprise entre 0,1 GHz et 6 GHz, à l'antenne (21), cette dernière (21) émettant un rayonnement électromagnétique de fréquence f et l'unité d'évaluation (20,2) mesurant l'adaptation d'impédance de l'unité émettrice (20.1) à l'antenne (21), - le revêtement électroconducteur transparent (3) présentant au moins une zone (9) comportant au moins une structure sans revêtement (4) et ladite zone (9) chevauchant au moins partiellement, de préférence englobant au moins partiellement et de préférence encore englobant entièrement, la surface de la projection orthogonale de l'antenne (21) sur le revêtement électroconducteur transparent (3), l'antenne (21) étant couplée électromagnétiquement au revêtement électroconducteur transparent (3), l'unité détecteur (20) émettant un signal d'alarme en cas d'écarts entre l'adaptation d'impédance mesurée et une valeur de comparaison.
EP17745708.2A 2016-08-02 2017-07-26 Ensemble vitre à alarme Withdrawn EP3494555A1 (fr)

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PCT/EP2017/068844 WO2018024565A1 (fr) 2016-08-02 2017-07-26 Ensemble vitre à alarme

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BR112018072278A2 (pt) 2016-08-02 2019-02-12 Saint-Gobain Glass France montagem de painel de alarme
BR112018072275A2 (pt) 2016-08-02 2019-02-12 Saint-Gobain Glass France montagem de painel de alarme
ES3036638T3 (en) * 2019-01-31 2025-09-23 Agc Glass Europe Insulating glazing unit with antenna unit

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CN109478356A (zh) 2019-03-15
US10490036B2 (en) 2019-11-26
KR20190037282A (ko) 2019-04-05
BR112018072278A2 (pt) 2019-02-12
JP2019531533A (ja) 2019-10-31
US20190287358A1 (en) 2019-09-19
WO2018024565A1 (fr) 2018-02-08

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