Title:
MONITORING SYSTEM, MONITORING METHOD, AND COMPUTER READABLE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/111118
Kind Code:
A1
Abstract:
A monitoring system (10) includes a signal acquisition unit (12) that acquires oscillation data at each of a plurality of sensing points in an optical fiber cable, the optical fiber cable being installed along a transportation infrastructure including a plurality of sections with structures different from each other; a raw dataset processing unit (14) that obtains time-distance oscillation data of the road based on the oscillation data; a passband processing unit (16) that obtains a filtering parameter for the time-distance oscillation data of each section of the road based on a structural or dimensional property of the section; a waterfall processing unit (18) that obtains waterfall data by removing noise from the time-distance oscillation data of each section of the road using the filtering parameter; and a trajectory detection unit (20) that identifies a trajectory of a moving object passing on the road from the waterfall data.
Inventors:
PETLADWALA MURTUZA (JP)
YAJIMA YOSHIYUKI (JP)
KUMURA TAKAHIRO (JP)
YAJIMA YOSHIYUKI (JP)
KUMURA TAKAHIRO (JP)
Application Number:
PCT/JP2022/043586
Publication Date:
May 30, 2024
Filing Date:
November 25, 2022
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01H9/00; G08G1/04
Domestic Patent References:
| WO2022113173A1 | 2022-06-02 | |||
| WO2022101959A1 | 2022-05-19 |
Foreign References:
| US20210312801A1 | 2021-10-07 | |||
| JP2019529952W | ||||
| JP2021121917A | 2021-08-26 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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