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. 15, 2009
Filed:
Dec. 20, 2007
Volker Rzehak, Ergolding, DE;
Vincent Wei Chit Chan, Hong Kong, CN;
Stephen James Underwood, Hong Kong, CN;
Thomas Hung Lam Kot, Hong Kong, CN;
Volker Rzehak, Ergolding, DE;
Vincent Wei Chit Chan, Hong Kong, CN;
Stephen James Underwood, Hong Kong, CN;
Thomas Hung Lam Kot, Hong Kong, CN;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A poly-phase electric energy meter comprises a front-end that converts analog current input signals and analog voltage input signals to digital current and voltage samples and a micro-controller for computing power consumed. The front end includes first and second input channels. Each input channel has a multiplexer, an analog-digital converter, a de-multiplexer and a set of data registers. The first input channel receives current input and the second input channel receives voltage inputs. A multiplexer control causes the first and second channels to sequentially sample the current and voltage for one phase at a time and store digital data in corresponding data registers. The micro-controller computes energy consumed from the simultaneous current and voltage samples.