RFID reader
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United States of America Patent
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Dec 18, 2018
Grant Date -
Oct 20, 2016
app pub date -
Jun 30, 2016
filing date -
Dec 16, 2005
priority date (Note) -
In Force
status (Latency Note)
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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.
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International Classification(s)
- G08B:SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; A....
- G07C:TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDIC....
- G08C:TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL ....
- A01K:ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; ....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- E05F:DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSIT....
- G01V:GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING ....
- G06K:RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD ....
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