Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
  • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
  • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
  • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
  • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
  • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
  • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
  • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
  • G06K19/07758—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/12—Supports; Mounting means
  • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/12—Supports; Mounting means
  • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
  • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
  • H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
  • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/59—Responders; Transponders

Definitions

• the present invention relates to a passive receiver-transmitter device supplied by an electromagnetic wave carrying information.
• the operation of such devices is based on an induction transmission between, on the one hand, a card or a label having a loop-shaped antenna whose ends are connected to an electronic chip present on the card or the label, and d on the other hand, a terminal capable of transmitting and receiving an electromagnetic wave carrying information.
• the antenna of the card or label picks up the electromagnetic wave emitted by the terminal and transmits the information to the chip which processes it before possibly sending a response re-emitted by the antenna and which will be picked up by the terminal.
• the latter can read and / or modify the information stored on the card.
• RFID radio frequency identification device
• a first solution consists in placing several terminals so as to cover the maximum of the possible orientations of the antenna. This solution is costly and requires complex IT management of the various terminals in order to avoid double validations if the object to be detected is in motion.
• Another solution consists in placing a label containing a transponder electronic chip on each side of the object to be detected so as to cover the three possible directions of incidence of the magnetic field emitted by the terminal.
• the field will in all cases be captured by at least one label.
• it wishes to modify the information concerning the object, recorded on the chip, it will be necessary to modify the chips of all the labels of the object. All the labels of the same object do not necessarily capture the electromagnetic wave, such an update of the chips is difficult to envisage.
• Document FR 2 812 427 describes another solution, in which an antenna is deployed on several separate adhesive supports each comprising a winding arranged in a particular plane, the windings being arranged at a distance to avoid disturbance of a winding with respect to a other winding.
• This device is satisfactory for a final installation on a bulky object of the pallet type. However, it does not allow the use of a support of reduced size, less than a meter and a fortiori to 50 cm, easily applicable on an object or portable by an individual. In addition, this antenna does not allow detection along a plane perpendicular to the pallet.
• the present invention aims to remedy the drawbacks mentioned above, and for this consists of a receiver device- passive transmitter powered by an electromagnetic wave having an antenna comprising a loop associated with a transponder electronic chip, this loop being able, on the one hand, to supply the electronic chip with an induced current generated when it is crossed by a first electromagnetic wave carrying information, and on the other hand, to emit a second electromagnetic wave carrying the response of the electronic chip, characterized in that the antenna is designed so that the loop comprises at least two non-coplanar or non-parallel parts in position of use. In this way, the antenna has a total non-planar reception surface, and is therefore capable of picking up electromagnetic waves in several directions.
• the antenna will be able to pick up waves whose magnetic field has at least one component oriented substantially perpendicular to a portion of the antenna.
• antenna designates the entire part of the radio system designed to radiate or receive waves.
• the loop comprises at least two parts situated in substantially perpendicular planes. This configuration makes the device particularly suitable for tracking parcels or packages.
• the loop is intended to be arranged in two planes substantially perpendicular to each other.
• the loop is intended to be positioned in three planes substantially perpendicular to each other.
• the antenna covers the three directions of space and can therefore pick up electromagnetic waves regardless of their orientation.
• the antenna is integrated in a support intended to be glued on several sides of the same object.
• the support is produced in the form of a self-adhesive label.
• the antenna comprises a loop produced in the form of an open cylindrical bracelet, obtained from a flat support constituted by a flexible strip.
• the antenna comprises a closed circular loop made from a spiral wire.
• the loop has a diameter of between 4 and 10 cm.
• FIG. 1 is a schematic view of a package on which a device according to a first embodiment is stuck realization of the invention.
• Figure 2 is an enlarged schematic view of the device glued to the package shown in Figure 1.
• Figure 3 is a schematic view of the device of Figure 2 before bonding to the package.
• Figure 4 shows schematically the arrangement of the loop of the device of Figure 1.
• Figure 5 is a curve showing the variation of the resonant frequency as a function of the distance from the loop to a corner of the packet around which the device Figure 1 is folded.
• Figure 6 shows a variant of the device of Figure 3.
• Figure 7 is a schematic view of a strip, comprising a device according to the second embodiment of the invention, before shaping.
• Figure 8 is a schematic view of the strip shown in Figure 7, after shaping around a cylinder.
• Figure 9 is a curve showing the variation of the resonant frequency as a function of the diameter of the cylinder of Figure 8.
• Figure 10 is a schematic top view of a device according to the third preferred embodiment of the invention.
• Figure 11 is a schematic perspective view of the device shown in Figure 10, placed around a cylinder.
• FIG. 12 is a curve representing the variation of the resonant frequency as a function of the diameter of the cylinder shown in FIG. 10.
• Figure 13 is a schematic perspective view of a device according to a fourth preferred embodiment of the invention.
• Figure 14 is a schematic perspective view of a device according to a fifth preferred embodiment of the invention.
• Figure 15 is a schematic perspective view of a device according to a sixth preferred embodiment of the invention.
• a parallelepipedic package 1 as represented in FIG. 1, has eight corners 2, each corner 2 being delimited by three faces 3, 4, 5 perpendicular to each other.
• a device 6 according to a first embodiment of the invention is glued to a corner 2 so as to be in contact with the three faces 3, 4, 5, as shown in FIG. 2. To do this, the device 6 is present in the form of a flat label, represented in FIG. 3, comprising an adhesive support 7 in the form of a square made of a pliable flexible material such as paper or a polymer film.
• a conductive wire 8, having two ends, is deposited on the periphery of the support 7 so as to form a loop also having a square shape.
• the conductive wire 8 can be secured to the support 7 or not.
• the loop can also be produced in the form of a conductive track obtained by metallic deposition or from a conductive ink.
• the ends of the wire 8 are connected to the supply terminals of an electronic chip 9 transponder.
• Such an electronic chip 9 is known per se and is of the type used for RFID, intended to operate at frequencies above 10 MHz, generally 13.56 MHz, and whose operating standards are mainly set by ISO standards.
• the electronic circuit comprising, on the one hand, the conductive wire 8 forming a loop, and on the other hand, the electronic chip 9 transponder, is designed so as to form a resonator whose loop constitutes the antenna.
• This type of circuit is also known.
• the antenna is made in such a way that the resonant frequency of the system corresponds to the operating frequency of the chip, ie 13.56 MHz. If the capacity of the electronic chip 9 is not high enough compared to the inductance of the loop, a capacity (not shown in the drawings), of appropriate value, will be mounted in parallel with the electronic chip 9.
• a protective sheet (not shown) is applied. Fold lines P1, P2 are then marked on the support 7 at right angles.
• Each of the lines P1, P2 is located on one of the branches of the support 7, so as to divide the label into three portions 11, 12, 13.
• Each of the portions 11, 12, 13 comprises a part of the loop formed by the wire 8 representing approximately one third of the total surface of the loop.
• the three portions 11, 12, 13 have substantially identical receiving surfaces. It is important to choose the dimensions and arrangement of the loop in order to obtain electromagnetic characteristics suitable for use in the frequency range chosen. Thus, the following adjustment can, for example, be carried out, by imposing the equality of the surfaces of the loop in the different planes.
• FIG. 6 represents an alternative embodiment of the label of FIG. 3, in which the same elements are designated by the same references as above.
• the label has, flat, a rectangular shape. In condition of use, the part 11 is glued to the face 3, near the corner 2, so that the lines P1, P2 are each located on an edge of the corner.
• the line P1 is located on the edge between the face 3 and the face 4, and the line P2 is located on the edge between the face 3 and the face 5.
• the parts 12, 13 are then folded according to their respective line P1, P2 to be glued to the faces 4, 5 of the package 1.
• the label therefore has three receiving surfaces perpendicular to each other, corresponding to the portions 11, 12, 13.
• Each surface being suitable to receive an electromagnetic wave oriented substantially perpendicular to it, the device therefore defines a three-dimensional orthogonal coordinate system covering all possible orientations. Indeed, any electromagnetic wave will have components H1, H2 and H3 in this coordinate system and will therefore be picked up by the loop.
• a device 28 according to a second embodiment of the invention and as shown in FIGS. 7 and 8, comprises a flat support 29 in the form of a flexible strip.
• a wire 30 is placed on the periphery of the support 29 so as to form a rectangular loop and is connected to an electronic chip 9.
• the support 29 is covered with a protective film then the device is glued to an open bracelet 31 having dimensions close to those of the support 29. Under conditions of use, the open bracelet 31 is placed around a substantially cylindrical body, such as a wrist or an ankle so as to constitute a bracelet.
• the loop formed by the wire 30 then has an open bracelet structure and therefore has receiving surfaces making it possible to pick up radially oriented Hr waves and Ha waves oriented along the axis of the cylinder.
• the fact that the bracelet 31 is an open bracelet allows the device 28 to easily adapt to different diameters.
• the surprising feature of a loop with an open bracelet structure is that the resonant frequency and the overvoltage coefficient of the device vary little when its diameter changes slightly.
• the curve of the variation of the frequency as a function of the diameter is shown in FIG. 10 for a bracelet 31 tuned to 13.56 MHz when its diameter is 8 centimeters. When the diameter of the bracelet varies between 7 and 10 cm, the resonance frequency remains around the nominal frequency of 13.56 MHz.
• FIGS. 10 and 11 A device 33, produced according to the third preferred embodiment of the invention, is shown in FIGS. 10 and 11.
• This device 33 comprises a spiral wire 34 closed on itself so as to form a circular loop having two ends connected to an electronic chip 9. Under conditions of use, this device 33 is placed around a body having substantially the shape of a cylinder, such as an ankle or a wrist, and has receiving surfaces making it possible essentially to pick up waves Ha oriented along the axis of the cylinder. Furthermore, the elasticity of the spiral allows the device 33 to easily adapt to different diameters without a specific opening device.
• the resonant frequency varied little with the diameter.
• the curve of the resonant frequency as a function of the diameter of the loop is represented in FIG. 12.
• FIG. 12 The curve of the resonant frequency as a function of the diameter of the loop is represented in FIG. 12.
• FIG. 13 represents a device 35 according to a fourth embodiment, intended to be glued to the corner of a package, like the first embodiment, comprising a wire running on each face of the packet two perpendicular segments, so as to form a left hexagon around a corner of the packet, the chip 37 being located for example on a vertex of the hexagon.
• FIG. 14 represents a device 38 according to a fifth embodiment intended to be glued to the corner of a package, like the first embodiment, which is similar to the first embodiment with the difference that its shape does not have L with straight segments, but with a rounded outer shape.
• 15 represents a sixth embodiment of a device 39, the loop being constituted by a rectangle which is twisted along an axis of torsion parallel to its length, in order to constitute a left surface making it possible to receive waves in several directions.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Theoretical Computer Science (AREA)
• Remote Sensing (AREA)
• Radar, Positioning & Navigation (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Near-Field Transmission Systems (AREA)
• Burglar Alarm Systems (AREA)
• Details Of Aerials (AREA)
• Radar Systems Or Details Thereof (AREA)

Applications Claiming Priority (2)

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• 2004
  • 2004-01-19 FR FR0400442A patent/FR2865329B1/fr not_active Expired - Fee Related
• 2005
  • 2005-01-19 WO PCT/FR2005/000117 patent/WO2005078649A1/fr active Application Filing
  • 2005-01-19 US US10/586,762 patent/US20070252763A1/en not_active Abandoned
  • 2005-01-19 CN CNA2005800026994A patent/CN1918586A/zh active Pending
  • 2005-01-19 EP EP05717448A patent/EP1721288A1/de not_active Withdrawn
  • 2005-01-19 KR KR1020067016438A patent/KR20070012343A/ko not_active Application Discontinuation
  • 2005-01-19 AU AU2005212668A patent/AU2005212668A1/en not_active Abandoned
  • 2005-01-19 JP JP2006550229A patent/JP2007524942A/ja active Pending

Non-Patent Citations (1)

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