Method and device for analyzing electric cable networks
US8063645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2007 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Sep 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method and a device for analyzing electric cables in a network, for the detection and location of defects in networks comprising at least one junction from which there depart N secondary cable stretches. The method includes interposing in the network, in series at the input of each the secondary stretches (T2, T3) starting from the junction (A), a respective bidirectional passive filter (FR2,FR3) able to cut off a frequency band associated with this stretch. The filters all allow through the useful frequencies for the normal operation of the network. A pulsed test is applied to the input of the network signal modulated by N different carrier frequencies each situated in one of the N frequency bands of the filters. The temporal position of test signal spikes reflected for each of the N frequencies is detected, and deducing therefrom the position of possible defects on a stretch of cable of the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.