Method for locating abnormal temperature event of distributed optical fiber
US12411048B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 29, 2023 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | May 10, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of locating a temperature anomalies of a distributed optical fiber includes the steps of: (a) generating a training dataset having training samples; (b) setting labels for training samples; (c) building a convolutional neural network composed of multi-layer convolutional networks and a fully connected layer, training to form a convolutional neural network model; (d) utilizing a fiber-optic temperature sensing system for measurement of testing object; (e) sending acquired data into the convolutional neural network model to obtain output features, then processing mapping and binarization; (f) offsetting the binary feature to obtain an offset feature and calculating a cosine similarity; and (g) obtaining a location of the abnormal temperature event by identifying the offset feature with a largest cosine similarity and identifying its location in the sequence P.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.