ALLFLEX U.S.A., INC.
|ALLFLEX U.S.A., INC. Patent applications|
|Patent application number||Title||Published|
|20140336524||ANIMAL HEALTH MONITORING SYSTEM - Systems and methods for animal health monitoring are described. In one embodiment, an animal health monitoring system includes a ruminant bolus transponder, a high frequency radio frequency transceiver device, and at least one base station including a high frequency radio frequency transceiver, wherein the high frequency radio frequency transceiver device is proximally located to the bolus transponder, wherein the ruminant bolus periodically emerges from a low power dormant state and measures data including at least one sensor measurement including time and date data, wherein the ruminant bolus is configured to store the measured data using the memory connected to the microcontroller in the ruminant bolus, wherein the ruminant bolus periodically emerges from a low power dormant state and transmits the stored data in the memory to the proximally located device via high frequency RF transmission, and wherein the ruminant bolus can be spontaneously activated by a low frequency scanner.||11-13-2014|
|20140054385||COMBINATION FULL-DUPLEX AND HALF-DUPLEX ELECTRONIC IDENTIFICATION TAG - Transponders are disclosed that are configurable to operate in an HDX mode and/or an FDX-B mode and that use a switchable load impedance across the transponders' resonant antenna circuit to induce amplitude and/or frequency modulation. One embodiment of the invention includes an inductive antenna including two terminals connected to tag circuitry, where the inductive antenna forms a resonant antenna circuit tuned to resonate at the frequency of the activation signal. The tag circuitry and the resonant antenna circuitry are configurable as an oscillator, the tag circuitry is configured to be powered by electric current induced in the resonant antenna circuit, includes at least one switchable load impedance connected across the antenna resonant circuit, configured to amplitude modulate the activation signal appearing at the resonant antenna circuit terminals using a switchable load impedance, and to frequency shift key modulate the oscillator signal appearing at the resonant antenna circuit terminals.||02-27-2014|
|20110210824||SIGNAL CANCELLING TRANSMIT/RECEIVE MULTI-LOOP ANTENNA FOR A RADIO FREQUENCY IDENTIFICATION READER - In an inductively coupled radio frequency identification (RFID) system deployed in animal and livestock applications, reading system efficacy can be compromised by animal movement on, around, or near metal structures prone to producing sonic frequencies. Such is the case, for example, when a walk-by antenna is mounted at the entry door of a livestock transport trader, and animals transit on a metallic ramp and metallic trader floor. Associated with the observable acoustic noise are subtle disturbances in the magnetic field surrounding the antenna due to vibrating metal altering the reluctance of the antenna's magnetic field. This acoustic noise manifests itself as an electrical noise phenomenon that interferes with the signals of certain types of identification tags which rely on amplitude modulation. The detrimental effects of acoustic noise from metal structures can be mitigated by using a multi-loop antenna that limits the spatial distribution of the transmitted magnetic field and cancels close by magnetic field disturbances.||09-01-2011|
|20090206999||DYNAMIC ANTENNA TUNING CIRCUIT FOR A RADIO FREQUENCY IDENTIFICATION READER - A resonant antenna circuit for a radio frequency identification (RFID) reader generates an electrical signal for activating a passive identification tag. The identification tag in turn generates a coded electrical signal that is detected by the reader. The electrical characteristics of the resonant circuit are actively and dynamically altered so that the antenna performs more optimally during the transmit and receive intervals.||08-20-2009|
Patent applications by ALLFLEX U.S.A., INC.