US 12,449,469 B2
Device for acoustic detection of an electric arc
Frank Simon, Palaiseau (FR); and Delphine Sebbane, Palaiseau (FR)
Assigned to OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES, Palaiseau (FR)
Appl. No. 18/881,163
Filed by OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALES, Palaiseau (FR)
PCT Filed Jul. 5, 2023, PCT No. PCT/EP2023/068589
§ 371(c)(1), (2) Date Jan. 3, 2025,
PCT Pub. No. WO2024/008811, PCT Pub. Date Jan. 11, 2024.
Claims priority of application No. 2206853 (FR), filed on Jul. 5, 2022.
Prior Publication US 2025/0172604 A1, May 29, 2025
Int. Cl. G01R 31/12 (2020.01); G01R 31/16 (2006.01)
CPC G01R 31/1209 (2013.01) [G01R 31/1272 (2013.01); G01R 31/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A device for acoustic detection of an electric arc, comprising a tubular probe suitable for being arranged next to a piece of electrical equipment on which an electric arc is likely to occur,
wherein an interior space, circumscribed by a wall of the tubular probe, extends along a length of the tubular probe, the interior space is filled with a fluid and acoustically isolated from external noise by the wall,
wherein the tubular probe comprises, at a periphery of the interior space, on the wall, at least one vulnerable zone suitable for degrading under an effect of the electric arc, revealing a passage to the interior space for an acoustic wave generated by the electric arc,
the device further comprises at least one acoustic sensor suitable for detecting the acoustic wave that travels through the passage and propagates in the interior space of the tubular probe.