×

Detection device for selectively distinguishing from each other a number of groups of articles or animals

  • US 5,438,960 A
  • Filed: 09/21/1993
  • Issued: 08/08/1995
  • Est. Priority Date: 09/21/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A detection arrangement for automatically distinguishing between cocks and hens in groups of poultry, said detection arrangement comprising:

  • a presence detection device for detecting the presence of any animal including said cocks and hens at a predetermined location;

    antenna means for generating an alternating magnetic field at said predetermined location;

    a first plurality of detection elements which are attachable to a leg of a first type of animal, including cocks, and arranged so as to disturb said alternating magnetic field in a first manner when attached to said leg of the first type of animal and located in said predetermined location;

    at least one other plurality of detection elements which are attachable to a leg of at least a second type of animal, including hens, and arranged so as to disturb said alternating magnetic field in a second manner when attached to said leg of said at least second type of animal and located in said predetermined location; and

    a receiver device coupled to said antenna means for detecting disturbances of the magnetic field generated by any one of said detection elements, said receiver device distinguishing between disturbances generated in said first manner and disturbances generated in said second manner to thereby determine whether an animal located in said predetermined location is wearing a detection element from said first plurality of detection elements or from said at least one other plurality of elements, said receiver device thus being able to distinguish between said first type of animal and said at least second type of animal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×