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Patent Searching and Data


Title:
DETECTION SYSTEM, DETECTION METHOD, AND DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/064797
Kind Code:
A1
Abstract:
This detection system comprises an optical fiber (10) for detecting environment information, an acquisition unit (21) for acquiring environment information included in an optical signal received from the optical fiber (10), and a detection unit (22) for detecting an event in the vicinity of the optical fiber (10) on the basis of a first environment pattern based on environment information acquired from an optical signal corresponding to a first period and a second environment pattern based on environment information acquired from an optical signal corresponding to a second period.

Inventors:
KOJIMA TAKASHI (JP)
Application Number:
PCT/JP2019/038524
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
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Assignee:
NEC CORP (JP)
International Classes:
G01D21/00; G01D5/353
Foreign References:
JP2018190428A2018-11-29
JP2002140774A2002-05-17
JP2017220981A2017-12-14
JP2005257570A2005-09-22
JP2001066117A2001-03-16
US20100290734A12010-11-18
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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