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U.S. Department of Energy
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System and method for inventorying multiple remote objects

Patent ·
OSTI ID:979379
A system and method of inventorying multiple objects utilizing a multi-level or a chained radio frequency identification system. The system includes a master tag and a plurality of upper level tags and lower level tags associated with respective objects. The upper and lower level tags communicate with each other and the master tag so that reading of the master tag reveals the presence and absence of upper and lower level tags. In the chained RF system, the upper and lower level tags communicate locally with each other in a manner so that more remote tags that are out of range of some of the upper and lower level tags have their information relayed through adjacent tags to the master tag and thence to a controller.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
Assignee:
Battelle Memorial Institute K1-53 (Richland, WA)
Patent Number(s):
7,639,119
Application Number:
11/864,112
OSTI ID:
979379
Country of Publication:
United States
Language:
English