Distributed optical fiber sensing signal processing method for safety monitoring of underground pipe network
US10620038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Mar 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distributed optical fiber sensing signal processing method for safety monitoring of underground pipe network, which belongs to infrastructure safety monitoring field, which is aimed to improve the intelligent ability of detection and identification of the existing distributed optical fiber sound/vibration sensing system under complex application conditions. The present invention utilizes the distributed optical fiber sound/vibration sensing system to pick up the sound or vibration signal of the whole line along the detection cable; and the customized short time feature and long time feature are respectively extracted from the relative quantity of the sound or the vibration signal at each spatial point in the whole monitoring range. The Bayesian identification and classification network at each spatial point is constructed and trained based on the prior knowledge of the collected signal features and their different background noises.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.