RFID/NFC-system and an RFID/NFC-element

• US 9,871,562 B2
• Filed: 11/25/2014
• Issued: 01/16/2018
• Est. Priority Date: 11/25/2014
• Status: Active Grant

• Current Assignee: Pepperl + Fuchs GmbH
• Original Assignee: Pepperl + Fuchs GmbH
• Inventors: Haas, Christian, Kahlau, Stefan
• Primary Examiner(s): DINH, TRINH VO
• Application Number:
  US15/118,553
• Publication Number:
  US 20170054474A1
• Time in Patent Office: 1,148 Days
• Field of Search: None
• CPC Class Codes: G06K 19/07767 the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
• CPC Class Codes: G06K 19/07779 the inductive antenna being a coil
• CPC Class Codes: G06K 19/07784 the inductive antenna consisting of a plurality of coils stacked on top of one another
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/77 for interrogation

Abstract

An RFID/NFC-system comprising a stationary RFID/NFC-interface (4) and a movable RFID/NFC-element (6, 6′, 6″), wherein the stationary RFID/NFC-interface (4) comprises a stationary carrier (16) with a first coil (17) arranged for example on its upper surface (15) or on its lower surface and connected to a first RFID/NFC-chip (18), wherein the stationary carrier (16) is fixed with one of its side faces (5) to a mounting device (2), wherein the movable RFID/NFC-element (6, 6′, 6″) comprises a movable carrier (7, 7′, 7″) with a second coil (8, 8′, 8″) arranged for example on its upper surface (14) or on its lower surface, wherein the second coil (8, 8′, 8″) is connected or connectable to a second RFID/NFC-chip and wherein the movable RFID/NFC-element (6, 6′, 6″) can be moved with respect to the stationary RFID/NFC-interface (4) such that the upper surface (14) or the lower surface of the movable carrier (7, 7′, 7″) and the upper surface (15) or the lower surface of the stationary carrier (16) at least partly face each other such that signals can be transferred between the first coil (17) and the second coil (8, 8′, 8″). Further an according RFID/NFC-element (6, 6′, 6″) is described.

Claims

1. RFID/NFC-system comprising:

a stationary RFID/NFC-interface (4);

a movable RFID/NFC-element (6, 6′

, 6″

); and

a portable RFID/NFC-interface (12),

wherein;

the stationary RFID/NFC-interface (4) comprises a stationary carrier (16) with a first coil (17) arranged on either an upper surface (15) of the stationary carrier (16) or on a lower surface of the stationary carrier (16) and connected to a first RFID/NFC-chip (18),

the stationary carrier (16) is fixed with one side face (5) of the stationary carrier (16) to a mounting device (2),

the movable RFID/NFC-element (6, 6′

, 6″

) comprises a movable carrier (7, 7′

, 7″

) with a second coil (8, 8′

, 8″

) arranged on either an upper surface (14) of the movable carrier (7, 7′

, 7″

) or on a lower surface of the movable carrier (7, 7′

, 7″

),

the second coil (8, 8′

, 8″

) is connectable to a second RFID/NFC-chip,

the movable RFID/NFC-element (6, 6′

, 6″

) is movable with respect to the stationary RFID/NFC-interface (4) such that the upper surface (14) or the lower surface of the movable carrier (7, 7′

, 7″

) and the upper surface (15) or the lower surface of the stationary carrier (16) at least partly face each other such that signals can be transferred between the first coil (17) and the second coil (8, 8′

, 8″

);

the second coil (8, 8′

, 8″

) is connected to a third coil (10) for transmitting signals to or receiving signals from the portable RFID/NFC-interface (12);

the third coil (10) is attached on a substrate (11); and

the substrate is configured as a sticker such that the substrate (11) is attachable to the portable RFID/NFC-interface (12) by adhesive means.

2. RFID/NFC-system according to claim 1, wherein the movable RFID/NFC-element (6, 6′

, 6″

) is arranged with respect to the stationary RDIF/NFC-interface (4) such that a plane of the first coil (17) and a plane of the second coil (8, 8′

, 8″

) at least partly face each other.

3. RFID/NFC-system according to claim 1, wherein:

at least one of the stationary carrier (16) or the movable carrier (7, 7′

, 7″

) is a printed circuit board; and

at least one of the first coil (17) or the second coil (8, 8′

, 8″

) is etched or printed onto the printed circuit board.

4. RFID/NFC-system according to claim 1, wherein:

at least one of the stationary carrier (16) or the movable carrier (7, 7′

, 7″

) is a printed circuit board; and

at least one of the first coil (17) or the second coil (8, 8′

, 8″

) is etched or printed as a planar coil onto the printed circuit board.

5. RFID/NFC-system according to claim 1, wherein at least two stationary RFID/NFC-interfaces (4) are fixed to the hat rail (2).

6. RFID/NFC-system according to claim 5, wherein the movable RFID/NFC-element (6, 6′

, 6″

) are movable between the stationary RFID/NFC-interfaces (4).

7. RFID/NFC-system according to claim 1, wherein the stationary RFID/NFC-interface (4) comprises a housing (3) with an opening (13) for inserting the movable RFID/NFC-element (6, 6′

, 6″

).

8. RFID/NFC-system according to claim 1, wherein the portable RFID/NFC-interface (12) is one or more of a portable computer, a mobile phone, a smartphone, or any other RFID/NFC-enabled mobile device.

9. RFID/NFC-system according to claim 1, wherein the third coil (10) is fixed to the portable RFID/NFC-interface (12) by adhesive means.

10. RFID/NFC-system according to claim 1, wherein the third coil (10) is fixed to the portable RFID/NFC-interface (12) by mechanical means.

11. RFID/NFC-system according to claim 1, wherein the movable RFID/NFC-element (6, 6′

, 6″

) is part of a movable RFID/NFC-interface (9) comprising an RFID/NFC-chip.

12. RFID/NFC-system according to claim 11, wherein the movable RFID/NFC-interface (9) comprises at least one of a display, an operator control (21), a battery (20), a communication-port (23), or a power connection (22).

13. RFID/NFC-system according to claim 12, wherein the display is a liquid crystal display (LCD) (19).

14. RFID/NFC-system according to claim 12, wherein the operator control (21) is at least one key (21) or button.

15. RFID/NFC-system according to claim 12, wherein the communication-port (23) is a USB-port.