RFID READER
First Claim
1. An animal entry control system, the system comprising:
- an RFID reader to register the presence and identification number of a transponder (15) injected under the skin of an animal; and
a door (8) mounted on a hinge (10) and controlled by said RFID tag reader; and
wherein said RFID reader comprises a resonant circuit including a tuning circuit to tune the resonant frequency of the RFID reader to the resonant frequency of the transponder and to control said RFID reader such that a drive frequency of said RFID reader matches both the resonant frequency of said RFID reader and a resonant frequency of said transponder.
2 Assignments
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Accused Products
Abstract
We describe an animal entry control system, for example for a cat flap, using RFID (radio frequency identification). The system comprises an RFID reader to register the presence and identification number of a transponder (15) injected under the skin of an animal; and a door (8) mounted on a hinge (10) and controlled by the RFID tag reader. The RFID reader comprises a resonant circuit including a tuning circuit to control the RFID reader such that a drive frequency of the RFID reader matches both a resonant frequency of the RFID reader and a resonant frequency of the transponder. Embodiments of the system are thus tolerant to a degree of detuning, for example from a metallic or magnetic material in the vicinity of the antenna.
38 Citations
15 Claims
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1. An animal entry control system, the system comprising:
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an RFID reader to register the presence and identification number of a transponder (15) injected under the skin of an animal; and a door (8) mounted on a hinge (10) and controlled by said RFID tag reader; and wherein said RFID reader comprises a resonant circuit including a tuning circuit to tune the resonant frequency of the RFID reader to the resonant frequency of the transponder and to control said RFID reader such that a drive frequency of said RFID reader matches both the resonant frequency of said RFID reader and a resonant frequency of said transponder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An animal feeding control RFID system including an RFID reader to register the presence and identification number of a transponder (15) injected under the skin of an animal;
- wherein said RFID reader comprises a resonant circuit including a tuning circuit to tune the resonant frequency of the RFID reader to the resonant frequency of the transponder and to control said RFID reader such that a drive frequency of said RFID reader matches both the resonant frequency of said RFID reader and a resonant frequency of said transponder.
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14. A method of controlling animal access in an animal entry control system, the system comprising:
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an RFID reader to register the presence and identification number of a transponder (15) injected under the skin of an animal; and a door (8) mounted on a hinge (10) and controlled by said RFID tag reader;
the method comprising;automatically controlling said RFID reader to tune the resonant frequency of the RFID reader to the resonant frequency of the transponder and to drive a drive frequency of said RFID reader such that it matches both the resonant frequency of said RFID reader and a resonant frequency of said transponder. - View Dependent Claims (15)
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Specification