US 11,054,458 B2
Method and device for detecting faults in a transmission line
Christophe Layer, Paris (FR); Esteban Cabanillas, Orsay (FR); and Antoine Dupret, Orsay (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Appl. No. 16/620,853
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
PCT Filed Jun. 1, 2018, PCT No. PCT/EP2018/064414
§ 371(c)(1), (2) Date Dec. 9, 2019,
PCT Pub. No. WO2018/228826, PCT Pub. Date Dec. 20, 2018.
Claims priority of application No. 1755478 (FR), filed on Jun. 16, 2017.
Prior Publication US 2020/0200814 A1, Jun. 25, 2020
Int. Cl. G01R 31/08 (2020.01); G01R 31/11 (2006.01)
CPC G01R 31/11 (2013.01) 12 Claims
OG exemplary drawing
 
1. A method for detecting faults in a transmission line (L) by reflectometry, comprising the steps of:
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 said point of the sampled signal and according to a precomputed memory-address increment Δ, said 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.