Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-05-02
2006-05-02
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S634000, C324S694000, C073S073000, C250S390050
Reexamination Certificate
active
07038470
ABSTRACT:
The invention provides a sensor for monitoring an environmental parameter in concrete including an enclosure; a detecting device connected to the enclosure for a detecting at least one environmental parameter in concrete, wherein the detecting device includes at least one capacitive element; an active material connected to the enclosure, wherein the active material is liable to respond to the environmental parameter and is operably connected to the capacitive element; a RFID chip mounted within the enclosure and operably connected to the detecting device; and an antenna operably connected to the RFID chip and the detecting device, wherein the antenna is part of an L-R-C circuit whose resonance frequency shifts within an assigned frequency band. The invention also provides a MEMS-based capacitive element that responds to an environmental parameter in concrete. The invention further provides a method of forming a MEMS-based capacitive element.
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Advanced Design Consulting, USA, Ind.
Nguyen Vincent Q.
Schneiderman Anne M.
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