Generation of trigger events by RFID labels
First Claim
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1. An apparatus for detecting a tag, having a transponder with a first antenna, for identification by electromagnetic waves and triggering of a supplementary system, the apparatus comprising:
- second and third antennas electromagnetically coupled together;
a reader, electrically connected to the second antenna, supplying energy to the transponder via electromagnetic coupling between the first and second antennas and interchanging data with the transponder; and
a synchronization unit, electrically connected to the third antenna, outputting a trigger signal activating the supplementary system based on occurrence of the data interchange between the transponder and the reader when detected using the third antenna, wherein the supplementary system, during output of the trigger signal, introduces modulation enabling determination of a distance to the reader using the third antenna.
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Abstract
In an apparatus and by a method for detecting a tag having a transponder for identification by electromagnetic waves (RFID), a synchronization unit is electromagnetically coupled to the transponder and outputs a trigger signal for activating a supplementary system based on the occurrence of data interchange with the transponder. Any desired devices can therefore be easily activated and uniquely identified using an identification number of the transponder.
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Citations
22 Claims
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1. An apparatus for detecting a tag, having a transponder with a first antenna, for identification by electromagnetic waves and triggering of a supplementary system, the apparatus comprising:
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second and third antennas electromagnetically coupled together; a reader, electrically connected to the second antenna, supplying energy to the transponder via electromagnetic coupling between the first and second antennas and interchanging data with the transponder; and a synchronization unit, electrically connected to the third antenna, outputting a trigger signal activating the supplementary system based on occurrence of the data interchange between the transponder and the reader when detected using the third antenna, wherein the supplementary system, during output of the trigger signal, introduces modulation enabling determination of a distance to the reader using the third antenna. - View Dependent Claims (2)
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3. A method for detecting a tag having a transponder for identification by electromagnetic waves, the method comprising:
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supplying energy from a reader, via a first antenna electrically connected to the reader, to the transponder via a second antenna electromagnetically coupled to the first antenna; interchanging data with the transponder using the reader, outputting, by a synchronization unit electrically connected to a third antenna that is electromagnetically coupled to the second antenna, a trigger signal activating a supplementary system based on occurrence of the data interchange detected using the third antenna; and transmitting sensor data from a sensor in the supplementary system to the reader using the third antenna during output of the trigger signal. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for detecting a tag, having a transponder with a first antenna, for identification by electromagnetic waves and triggering of a supplementary system, the apparatus comprising:
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second and third antennas electromagnetically coupled together; a reader, electrically connected to the second antenna, supplying energy to the transponder via electromagnetic coupling between the first and second antennas and interchanging data with the transponder; and a synchronization unit, electrically connected to the third antenna, outputting a trigger signal activating the supplementary system based on occurrence of the data interchange between the transponder and the reader when detected using the third antenna, the supplementary system comprising a sensor device transmitting sensor data to the reader via the third antenna during output of the trigger signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification