Method and device for detecting faults in a transmission line

US11054458B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Christophe J. Layer · Eppelheim, DE
• Esteban CABANILLAS · Orsay, FR
• Antoine Dupret · Orsay, FR

Key dates

• Filing date: Jun 1, 2018
• Grant date: Jul 6, 2021
• Expiry date: Sep 9, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/11
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and device for detecting faults in a transmission line by reflectometry, include the following steps: injecting into the transmission line a reference signal at an emission frequency fDAC; collecting a reflected signal at a point on the transmission line; sampling the reflected signal at a sampling frequency fADC, the sampling frequency fADC being different from the emission frequency fDAC; storing each point of the sampled signal at a memory address corresponding to an index assigned to the point of the sampled signal and according to a precomputed memory-address increment Δ, the memory-address increment Δ depending on the emission frequency fDAC, on the sampling frequency fADC, on an over-sampling factor Ω and on a preset acquisition time Σ; repeating the storing step during the acquisition time Σ; and generating, from the points stored during the acquisition time, a recomposed signal able to be used to detect faults.