US Patent:
20100127869, May 27, 2010
Inventors:
Gening (GARY) Yu - Farmington Hills MI, US
Ramon F. Sarraga - Warren MI, US
Shang-Tae Yee - Troy MI, US
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI
International Classification:
G08B 13/14
Abstract:
A hierarchical configuration of RFID tags. The hierarchical configuration includes a plurality of RFID tags having lower level RFID tags, intermediate level RFID tags and at least one upper level RFID tags, where each RFID tag stores an identification code and other information about the thing it is attached to. Further, each intermediate level RFID tag also obtains information about a group of lower level RFID tags that it is associated with and the at least one upper level RFID tag obtains information about more than one intermediate RFID tag it is associated with.