Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2007-01-09
2007-01-09
Stcyr, Daniel (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
Reexamination Certificate
active
11305854
ABSTRACT:
Magnetic field response sensors designed as passive inductor-capacitor circuits produce magnetic field responses whose harmonic frequencies correspond to states of physical properties for which the sensors measure. Power to the sensing element is acquired using Faraday induction. A radio frequency antenna produces the time varying magnetic field used for powering the sensor, as well as receiving the magnetic field response of the sensor. An interrogation architecture for discerning changes in sensor's response frequency, resistance and amplitude is integral to the method thus enabling a variety of measurements. Multiple sensors can be interrogated using this method, thus eliminating the need to have a data acquisition channel dedicated to each sensor. The method does not require the sensors to be in proximity to any form of acquisition hardware. A vast array of sensors can be used as interchangeable parts in an overall sensing system.
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Taylor Bryant D.
Woodard Stanley E.
Edwards Robin W.
Stcyr Daniel
The United States of America as represented by the Administrator
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