Global Patent Index - EP 1053479 A1

EP 1053479 A1 2000-11-22 - ELECTRIC ARC MONITORING SYSTEMS

Title (en)

ELECTRIC ARC MONITORING SYSTEMS

Title (de)

ÜBERPRÜFUNGSSYSTEM FÜR ELEKTRO-LICHTBOGEN

Title (fr)

SYSTEMES DE CONTROLE POUR ARCS ELECTRIQUES

Publication

EP 1053479 A1 (EN)

Application

EP 97938382 A

Priority

US 9714497 W

Abstract (en)

[origin: WO9909422A1] Electric arc monitoring is effected by exploiting the discovery that electric arcs are fractal phenomena in that all essential information that signifies "arc" is contained in each fractal subset. These fractal subsets are logarithmically distributed over the arc spectrum. Monitoring of arcs is most advantageously effected on a fractal subset (16) of low logarithmic order where the amplitude is higher pursuant to the 1/f characteristic of electric arcs, where cross-induction among neighboring circuits is lower, and where travel between the arc (12) and the arc signature pickup (23) is longer than at the high frequencies customary for electric arc detection. Fractal subset transformation (17) reduces the danger of false alarms. Arc signature portions may be processed in out of phase paths (242, 342) or treated as modulated carriers (42) for monitoring. Aircraft may be equipped with spark monitoring systems (80) that record (82-86) occurence of dangerous sparking at different locations (92-96) aboard the aircraft (81).

IPC 1-7 (main, further and additional classification)

G01R 31/08

IPC 8 full level (invention and additional information)

G01R 31/02 (2006.01); B23K 9/095 (2006.01); G01R 23/18 (2006.01); G01R 29/00 (2006.01); G01R 29/08 (2006.01); H01T 1/12 (2006.01); H01T 15/00 (2006.01)

CPC (invention and additional information)

G01R 23/18 (2013.01); G01R 29/0842 (2013.01)

Designated contracting state (EPC)

CH DE FR GB LI NL SE

EPO simple patent family

WO 9909422 A1 19990225; AU 4072197 A 19990308; AU 763046 B2 20030710; AU 9103198 A 19990308; CA 2298789 A1 19990225; CA 2298789 C 20040622; EP 1004031 A1 20000531; EP 1004031 A4 20041027; EP 1053479 A1 20001122; EP 1053479 A4 20030702; JP 2001518603 A 20011016; WO 9909424 A1 19990225

INPADOC legal status


2012-01-18 [18R] REFUSED

- Effective date: 20110911

2011-09-11 [REG DE R003] REFUSAL DECISION NOW FINAL

2008-01-23 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20071227

2003-07-02 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20030519

2003-07-02 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7G 01R 31/08 A

2003-07-02 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7H 02H 1/00 B

2003-07-02 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7G 01R 31/02 B

2003-07-02 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7G 01R 31/00 B

2000-11-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000314

2000-11-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB LI NL SE