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:
Feb. 03, 2009
Filed:
Nov. 30, 2002
Clemens Heilig, Offenburg, DE;
Roland Dieterle, St. Georgen, DE;
Clemens Heilig, Offenburg, DE;
Roland Dieterle, St. Georgen, DE;
Endress + Hauser GmbH + Co. KG, Maulburg, DE;
Abstract
A field device electronics with a sensor unit for process measurements, wherein the field device electronics is connected with the sensor unit over corresponding signal paths, and wherein the field device electronics receives analog measurement signals (S) of the sensor unit and produces analog drive signals (S) for the fundamental wave excitation of the sensor unit and transmits to the sensor unit. Present for producing the drive signal(S) are an analog/digital converter, a digital phase shifter and a digital/analog converter, wherein the analog measurement signals (S) are digitized by the analog/digital converter and forwarded to a digital phase shifter, and wherein the output signal (S) of a phase shifter is converted by the digital/analog converter into the analog drive signal (S) for the sensor unit.