UTILIZATION OF MOTION AND SPATIAL IDENTIFICATION IN RFID SYSTEMS
First Claim
1. A radio frequency identification system comprisinga load transporter having a load receiving space for receiving a radio frequency identification tagged item with a first tag that is moved to the load receiving space;
- a radio frequency identification reader system for taking one or more tag readings during movement of the true tag along a path to the load receiving space; and
a processing system that compares tag motional data based on the one or more tag readings with tag motional information relating to movement of the first tag along the path to establish whether the one or more tag readings represent a tag moving along the path to the load receiving space.
0 Assignments
0 Petitions
Accused Products
Abstract
In one aspect where a load or a subset of one or more tags is in motion relative to an RFID reader system, the RFID system obtains tag readings and derives tag scalar or vector motional data e.g. tag velocity, tag acceleration, and/or rate of change of tag acceleration which can be compared to known tag motional information to distinguish true tags of interest from false positives which are unavoidably also within the field of the reader system. An antenna system may also make readings during distinctive movement patterns of true tags, such as vertical or arcuate movement and utilize computed tag motional data based on the tag readings to distinguish true tags from false positives. Two components of the RFID system may communicate information on identified tags, and/or interact (e.g. by silencing tags), so as to cooperate in identifying true positive tags.
11 Citations
20 Claims
-
1. A radio frequency identification system comprising
a load transporter having a load receiving space for receiving a radio frequency identification tagged item with a first tag that is moved to the load receiving space; -
a radio frequency identification reader system for taking one or more tag readings during movement of the true tag along a path to the load receiving space; and a processing system that compares tag motional data based on the one or more tag readings with tag motional information relating to movement of the first tag along the path to establish whether the one or more tag readings represent a tag moving along the path to the load receiving space. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A radio frequency identification system comprising
a radio frequency identification reader system having an antenna system for support by a transport vehicle, and for projecting a reading field into an interior receiving space of the transport vehicle; -
an actuator for actuation as a radio frequency identification tag is moved into the interior receiving space and for activating said radio frequency identification reader system to obtain tag readings scanning for the moving radio frequency identification tag; and a processing system coupled with the radio frequency identification reader system and obtaining information based on the tag readings enabling the processing system to determine whether the tag readings represent a tag being inserted into the interior receiving space of the transport vehicle or an extraneous tag external to the interior receiving space of the transport vehicle.
-
-
7. A radio frequency identification system for distinguishing a true radio frequency identification tag from an extraneous tag, said radio frequency identification system comprising:
-
a radio frequency identification reader system configured to scan for a radio frequency identification tag within a read zone of the radio frequency identification reader system and producing tag readings therefrom; a data system that assists in determining tag motional data based on the tag readings of the radio frequency identification reader system taken during movement of the radio frequency identification tag; and a processing system that compares the tag motional data based on the tag readings with true tag motional information to determine whether the tag readings are from the radio frequency identification tag. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification