Patent ID: 11860214
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A system for monitoring the state of a cable, the system comprising a plurality of reflectometry devices each being able to inject a test signal at a point of injection into the cable and to measure a signal having propagated back through the cable to the point of injection into the cable, the reflectometry devices being intended to be positioned along the cable at predetermined positions so as to divide the cable into successive segments,
the system comprising a control unit able to communicate with the reflectometry devices and configured to carry out at least one reflectometry test which includes injecting a test signal into the cable with a first reflectometry device and measuring the test signal, with the first reflectometry device, after the test signal has propagated through the cable and been reflected from an impedance discontinuity,
the system further comprising a post-processing unit able to communicate with the reflectometry devices and configured to analyze a measurement of the test signal with a view to detecting an amplitude peak corresponding to a fault, the control unit being configured to command, according to a predefined test procedure, each reflectometry device so as to activate or deactivate an injection of a test signal into the cable with each said reflectometry device and to activate or deactivate the acquisition of a measurement of a signal propagating through the cable with each said reflectometry device, the test procedure consisting in successively executing the following commands:
activating the injection of a test signal by a first reflectometry device located at the start of a first segment of the cable,
activating the acquisition of a signal measurement by the first reflectometry device,
after a predetermined monitoring first duration, deactivating the injection of a test signal by the first device and deactivating the acquisition of a measurement by the first device,
after a predetermined delay second duration, reiterating the preceding steps for the following segments of the cable.