Electronic identification system
First Claim
1. An electronic identification system for identifying an object moving through a portal structure comprising:
- at least one generating means for generating a multi-directional electromagnetic field in a plurality of different angular relations to the direction of movement of the object through the portal structure;
at least one first receiving means for attachment to the object for receiving and storing energy from the electromagnetic field;
at least one transmission means for attachment to the object for transmitting identifying data after the at least one first receiving means has received energy from the electromagnetic field;
at least one second receiving means for receiving the identifying data from the object; and
a flexible curtain secured to the portal structure, wherein the at least one generating means and the at least one second receiving means comprise an antenna loop secured to the flexible curtain.
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Accused Products
Abstract
An electronic identification system for identifying an animal moving through a portal structure is disclosed. A transponder worn on a rope or chain around the neck of the animal is energized by a multi-directional electromagnetic field generated by a double antenna loop in the portal structure. The transponder, when energized, will transmit identifying data back to the antenna loop after the electromagnetic field has been removed. That information will be processed by a microprocessor so that the animal can be identified. The antenna loop is secured within a flexible free-hanging curtain. The curtain is attached only at the top to the frame of the portal structure; the bottom of the curtain is free-hanging so that the curtain and antenna loop will not be damaged if the animal kicks the curtain. The system also includes two ultra-sonic transducers positioned at the entrance and exit of the portal. These two transducers are used to separately detect the presence of the animal in the portal structure and also to determine the direction of movement of the animal.
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Citations
10 Claims
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1. An electronic identification system for identifying an object moving through a portal structure comprising:
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at least one generating means for generating a multi-directional electromagnetic field in a plurality of different angular relations to the direction of movement of the object through the portal structure; at least one first receiving means for attachment to the object for receiving and storing energy from the electromagnetic field; at least one transmission means for attachment to the object for transmitting identifying data after the at least one first receiving means has received energy from the electromagnetic field; at least one second receiving means for receiving the identifying data from the object; and a flexible curtain secured to the portal structure, wherein the at least one generating means and the at least one second receiving means comprise an antenna loop secured to the flexible curtain. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electronic identification system for identifying an animal moving through a portal structure comprising:
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a parallel resonant circuit connected to the portal structure including a double antenna loop for alternately generating a multi-directional electromagnetic field in a plurality of different angular relations to the direction of movement of the object through the portal structure and receiving identifying data concerning the animal; a flexible curtain attached to the portal structure, said loop being located in said curtain; a transponder adapted to be worn by the animal for receiving energy from the electromagnetic field and, when the electromagnetic field is removed, for transmitting the identifying data to the first parallel resonant circuit; and separate detector means for detecting the presence and direction of movement of the animal as the animal moves through the portal structure. - View Dependent Claims (9, 10)
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Specification