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Livestock data acquisition and collection

  • US 7,026,939 B2
  • Filed: 02/10/2003
  • Issued: 04/11/2006
  • Est. Priority Date: 02/10/2003
  • Status: Expired due to Fees
First Claim
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1. A system for acquiring data from a subject animal, the system comprising:

  • at least one passive data acquisition device associable with a subject animal, the at least one device comprising;

    at least one sensor operable to provide sensor data relating to the subject animal;

    a radio frequency identification (RFID) transponder operable to transmit an RFID telegram comprising the sensor data, wherein the RFID telegram comprises;

    an ISO 11785-formatted full duplex identification telegram, the sensor data outside the ISO 11785-formatted full duplex identification telegram; and

    wherein a first portion of the ISO 11785-formatted full duplex telegram is contained in a portion of the RFID telegram intended for transmit during an initial ISO 11785 activation period, and a second portion of the ISO 11785-formatted full duplex telegram is contained in a portion of the RFID telegram intended for transmit during an extended ISO 11785 activation period; and

    at least one magnet separate from the transponder; and

    a transceiver,the transceiver operable;

    to activate the at least one passive data acquisition device, andto receive and demodulate the REID telegram from the data acquisition device sent in response to the activation;

    the transceiver comprising;

    an activation antenna configured to encompass areas of substantially equal and substantially opposite flux; and

    a receive antenna configured symmetrically along an axis of symmetry of the activation antenna.

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