The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2006
Filed:
Apr. 30, 2004
Stanley E. Woodard, Hampton, VA (US);
Bryant D. Taylor, Smithfield, VA (US);
Qamar A. Shams, Yorktown, VA (US);
Christopher L. Fox, Legal Representative, Yorktown, VA (US);
Melanie L. Fox, Legal Representative, Hayes, VA (US);
Robert G. Bryant, Lightfoot, VA (US);
Stanley E. Woodard, Hampton, VA (US);
Bryant D. Taylor, Smithfield, VA (US);
Qamar A. Shams, Yorktown, VA (US);
Christopher L. Fox, legal representative, Yorktown, VA (US);
Melanie L. Fox, legal representative, Hayes, VA (US);
Robert G. Bryant, Lightfoot, VA (US);
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.