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:
Nov. 18, 2025
Filed:
Sep. 21, 2023
Prysmian S.p.a., Milan, IT;
Antonio Di Stefano, Palermo, IT;
Aurelio Zinno, Palermo, IT;
Giovanni Artale, Palermo, IT;
Nicola Panzavecchia, Palermo, IT;
Prysmian S.p.A., Milan, IT;
Abstract
An example arc-fault detection apparatus includes an electrical current measuring device connectable to an electrical circuit and configured to provide a measured signal representing an electrical current flowing in the electrical circuit. A computing device is configured to: acquire a first plurality from samples of the measured signal included into a first time interval and a second plurality of sample from the measured signal included into a second time interval, subsequent to the first time interval; perform a discrete derivative of the first plurality of samples obtaining past derivative samples and a discrete derivative of the second plurality of samples obtaining present derivative samples; compute a derivative similarity index by processing the past derivative samples and the present derivative samples according to an auto-correlation type function quantifying the similarity of the past derivative samples with the present derivative samples.