Title:
RAILROAD MONITORING SYSTEM, RAILROAD MONITORING DEVICE, RAILROAD MONITORING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/116031
Kind Code:
A1
Abstract:
The railroad monitoring system according to the present invention is provided with: a cable (20) including communication optical fibers laid in a railroad (10); a receiver unit (331) which receives an optical signal from at least one of the communication optical fibers included in the cable (20); and a detection unit (332) which detects a pattern in accordance with the state of the railroad (10) on the basis of the optical signal and detects unusual states of the railroad (10) on the basis of the pattern in accordance with the detected state of the railroad (10).
Inventors:
YODA YUKIHIDE (JP)
AONO YOSHIAKI (JP)
AONO YOSHIAKI (JP)
Application Number:
PCT/JP2019/040698
Publication Date:
June 11, 2020
Filing Date:
October 16, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
B61L25/02; G01B11/00
Domestic Patent References:
| WO2018211237A1 | 2018-11-22 |
Foreign References:
| US20060202860A1 | 2006-09-14 | |||
| JP2018504603A | 2018-02-15 | |||
| JP2018114790A | 2018-07-26 | |||
| JP2018114792A | 2018-07-26 | |||
| JP2018226683A | 2018-12-03 |
Other References:
See also references of EP 3892519A4
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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