US 12,092,680 B2
Method for detecting a random state transition in a conducting line, particularly a superconducting line
Josy Cohen, Gif-sur-Yvette (FR); and Louise Revault, Gif-sur-Yvette (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Feb. 2, 2024, as Appl. No. 18/431,193.
Claims priority of application No. 2301023 (FR), filed on Feb. 3, 2023.
Prior Publication US 2024/0264215 A1, Aug. 8, 2024
Int. Cl. G01R 31/11 (2006.01); G01R 31/08 (2020.01)
CPC G01R 31/11 (2013.01) [G01R 31/083 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for detecting a random transition in a conducting line, comprising the steps of:
making at least one reference reflectometry measurement on the conducting line, consisting in at least injecting a test signal into the line, measuring a reflection of the back-propagated test signal, and deducing from this a reference time-domain reflectogram,
identifying at least one characteristic of the reference time-domain reflectogram from among: the temporal position of at least one amplitude peak, a number of amplitude peaks in the reflectogram, and the amplitude of at least one amplitude peak,
making at least a second reflectometry measurement on the conducting line to obtain a second time-domain reflectogram,
identifying the same at least one characteristic in the second time-domain reflectogram, and
for each amplitude peak identified, determining a difference between the at least one characteristic measured on the reference time-domain reflectogram and the same characteristic measured on the second time-domain reflectogram,
evaluating, from a plurality of successive measurements, whether said difference increases in absolute value, and, if this is the case, triggering a warning corresponding to the appearance of a random transition.