Communications: electrical – Continuously variable indicating – With calculation
Reexamination Certificate
2007-03-06
2007-03-06
Wong, Albert K. (Department: 2612)
Communications: electrical
Continuously variable indicating
With calculation
C405S129500, C340S539100, C340S539220, C340S870060
Reexamination Certificate
active
10974917
ABSTRACT:
A method of measuring a parameter of a landfill including a cap, without passing wires through the cap, includes burying a sensor apparatus in the landfill prior to closing the landfill with the cap; providing a reader capable of communicating with the sensor apparatus via radio frequency (RF); placing an antenna above the barrier, spaced apart from the sensor apparatus; coupling the antenna to the reader either before or after placing the antenna above the barrier; providing power to the sensor apparatus, via the antenna, by generating a field using the reader; accumulating and storing power in the sensor apparatus; sensing a parameter of the landfill using the sensor apparatus while using power; and transmitting the sensed parameter to the reader via a wireless response signal. A system for measuring a parameter of a landfill is also provided.
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Johnson James T.
Kunerth Dennis C.
Svoboda John M.
Battelle Energy Alliance, LLC
Wells St. John
Wong Albert K.
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