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:
Sep. 09, 2003
Filed:
Jan. 26, 2000
Edward John Beroset, Chapel Hill, NC (US);
Konstantin Zh. Lobastov, Raleigh, NC (US);
Richard William Blasco, Auburn, CA (US);
Rodney C. Hemminger, Raleigh, NC (US);
Peter W. Heuell, Raleigh, NC (US);
Stig Leira, Baerums Verk, NO;
Valentin Suta, Raleigh, NC (US);
Scott Turner Holdsclaw, Raleigh, NC (US);
Elster Electricity, LLC, Horsham, PA (US);
Abstract
The phase shift in an electronic energy meter is compensated for by obtaining temperature and frequency readings in the meter and using these readings in a digital signal processor (DSP) residing within the electronic energy meter. The frequency and temperature compensation is performed to each phase calibration and the result is stored in the DSP. To reduce the possible influence of noise in the system, the compensated DSP values are filtered to provide a smoothing of the data.