Title:
SYSTEM FOR IDENTIFYING REMOVAL OF MAINTENANCE HATCH, AND METHOD FOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/182507
Kind Code:
A1
Abstract:
This method for detecting removal of a maintenance hatch includes a step of sending a light pulse along an optical fiber. A first part of the optical fiber is in close proximity to the maintenance hatch. The method also includes a step of employing a sensor to detect backscattered light from the optical fiber. The method also includes a step of determining information related to the first part of the optical fiber on the basis of a comparison between the detected backscattered light and a trained model. The method also includes a step of identifying whether the maintenance hatch has been removed, on the basis of the determined information.
Inventors:
OGURA NAOTO (JP)
YODA YUKIHIDE (JP)
MORI KOYO (JP)
YODA YUKIHIDE (JP)
MORI KOYO (JP)
Application Number:
PCT/JP2021/009513
Publication Date:
September 16, 2021
Filing Date:
March 10, 2021
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G08B13/186
Domestic Patent References:
| WO2020044660A1 | 2020-03-05 | |||
| WO2019189192A1 | 2019-10-03 |
Foreign References:
| JP2006214844A | 2006-08-17 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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