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:
Mar. 29, 2005
Filed:
May. 20, 2000
Peter Meckler, Hohenstadt/Pommelsbrunn, DE;
Peter Steffen, Erlangen, DE;
Stefan Kohler, Rödental, DE;
Ho Wilson, Seattle, WA (US);
Peter Meckler, Hohenstadt/Pommelsbrunn, DE;
Peter Steffen, Erlangen, DE;
Stefan Kohler, Rödental, DE;
Ho Wilson, Seattle, WA (US);
Ellenberger & Poensgen GmbH, Altdorf, DE;
Abstract
The invention relates to a method for detecting accidental arcs (arc tracking) on a cable (), especially on a cable of an aircraft electrical system. According to said method, an alternating current signal (I(t)) that has been detected is sampled time-discretely and a trigonometric function (I(k)) imitating the alternating current characteristic is determined by interpolation of a number of sampling values (y(k)). The current alternating frequency (ω) is then derived from this trigonometric function. The result of a comparison of the current alternating current frequency (ω) and a set or reference frequency (ω') is used to determine the presence of an accidental arc (I,I) and a warning signal (S) is optionally generated. A device which functions according to this method is advantageously integrated into a circuit-breaker () for the aircraft electrical system, so that the latter is equipped to detect and deactivate accidental arcs that occur on the electrical system cable ().