Wireless sensing system for non-invasive monitoring of...

Details Wireless sensing system for non-invasive monitoring of... Wireless sensing system for non-invasive monitoring of...

2008-01-17

2010-10-19

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

With other measuring device

C073S30400R, C073S053010

Reexamination Certificate

active

07814786

ABSTRACT:
A wireless sensing system monitors the level, temperature, magnetic permeability and electrical dielectric constant of a non-gaseous material in a container. An open-circuit electrical conductor is shaped to form a two-dimensional geometric pattern that can store and transfer electrical and magnetic energy. The conductor resonates in the presence of a time-varying magnetic field to generate a harmonic response. The conductor is mounted in an environmentally-sealed housing. A magnetic field response recorder wirelessly transmits the time-varying magnetic field to power the conductor, and wirelessly detects the harmonic response that is an indication of at least one of level of the material in the container, temperature of the material in the container, magnetic permeability of the material in the container, and dielectric constant of the material in the container.

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