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:
Jan. 03, 1989
Filed:
Jul. 24, 1987
Applicant:
Inventors:
Ronald G Landman, Ypsilanti, MI (US);
Harold G Spring, Garden City, MI (US);
Joseph C Burba, Ypsilanti, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01R / ;
U.S. Cl.
CPC ...
324142 ; 3241 / ; 364483 ;
Abstract
A digital energy meter for providing energy measurements of nonsinusoidal waveforms. Voltage and related current components of a digitally sampled waveform are multiplied to form a product representative of instantaneous power. The products are summed or accumulated over a first time period, and the sums then accumulated over a second time period to form a second sum representative of total power over the second time period. An energy measurement is then obtained by an algorithm which requires only a simple division by a power of two.