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:
Jul. 17, 2012
Filed:
Aug. 15, 2008
David J. Mitchell, Oviedo, FL (US);
Anand A. Kulkarni, Oviedo, FL (US);
Ramesh Subramanian, Oviedo, FL (US);
Edward R. Roesch, Orlando, FL (US);
Rod Waits, Sunnyvale, CA (US);
Roberto Schupbach, Fayetteville, AR (US);
John R. Fraley, Fayetteville, AR (US);
Alexander B. Lostetter, Fayetville, AR (US);
Brice Mcpherson, Fayetteville, AR (US);
Bryon Western, West Fork, AR (US);
David J. Mitchell, Oviedo, FL (US);
Anand A. Kulkarni, Oviedo, FL (US);
Ramesh Subramanian, Oviedo, FL (US);
Edward R. Roesch, Orlando, FL (US);
Rod Waits, Sunnyvale, CA (US);
Roberto Schupbach, Fayetteville, AR (US);
John R. Fraley, Fayetteville, AR (US);
Alexander B. Lostetter, Fayetville, AR (US);
Brice McPherson, Fayetteville, AR (US);
Bryon Western, West Fork, AR (US);
Siemens Energy, Inc., Orlando, FL (US);
Arkansas Power Electronics International, Inc., Fayetteville, AR (US);
Abstract
In a telemetry system for use in an engine, a circuit structure () affixed to a moving part () of the engine is disposed for amplifying information sensed about a condition of the part and transmitting the sensed information to a receiver external to the engine. The circuit structure is adapted for the high temperature environment of the engine and includes a differential amplifier () having an input for receiving a signal from a sensor () disposed on the part. A voltage controlled oscillator () with an input coupled to the output of the amplifier produces an oscillatory signal having a frequency representative of the sensed condition. A buffer () with an input coupled to the output of the oscillator buffers the oscillatory signal, which is then coupled to an antenna () for transmitting the information to the receiver.