US 11,913,983 B2
Method for arc detection by multi-carrier reflectometry (MCTDR)
Emmanuel Bussy, Moissy-Cramayel (FR); Sylvain Poignant, Moissy-Cramayel (FR); Marc Olivas, Orsay (FR); Patrick Depras, St Grégoire (FR); and Soumaya Sallem Andasmas, Savigny sur Orge (FR)
Assigned to SAFRAN ELECTRICAL & POWER, Blagnac (FR); and WIN MS, Orsay (FR)
Appl. No. 17/439,320
Filed by Safran Electrical & Power, Blagnac (FR)
PCT Filed Mar. 16, 2020, PCT No. PCT/HR2020/050544
§ 371(c)(1), (2) Date Sep. 14, 2021,
PCT Pub. No. WO2020/188209, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. FR1902721 (FR), filed on Mar. 15, 2019.
Prior Publication US 2022/0155360 A1, May 19, 2022
Int. Cl. G01R 31/00 (2006.01); G01R 31/11 (2006.01)
CPC G01R 31/008 (2013.01) [G01R 31/11 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A device for detecting and locating by reflectometry an arc in an electric circuit of an aeronautical system, including:
a coupling element configured to transmit an electrical signal in the circuit and to acquire a signal passing through the circuit;
a high-pass filter having a cut-off frequency between 100 kHz and 1 GHz, the high-pass filter being configured to block the frequencies lower than the cut-off frequency;
a correlation chip able to control the coupling element and the high-pass filter, the correlation chip including a memory in which code data are stored,
wherein the code data, when executed,
Cause:
the coupling element to transmit a multi-carrier time domain reflectometry signal, MCTDR, in a line of the circuit and to acquire an electrical quantity of the reflected signal passing through the network;
the high-pass filter to filter the acquired signal so as to eliminate signals having a frequency lower than the cut-off frequency;
the correlation chip to compare the acquired signal with a first and a second threshold, the first and the second threshold being of different signs.