Title:
MAINTENANCE DEVICE, MAINTENANCE SYSTEM, AND MAINTENANCE METHOD
Document Type and Number:
WIPO Patent Application WO/2021/205944
Kind Code:
A1
Abstract:
A maintenance device (10) transmits a pulse signal from a predetermined observation point (P) of a rail (R), observes an observation signal that appears at the observation point (P) after the transmission of the pulse signal, compares an observation history of observation signals and the present received observation signal, and detects if an abnormality has occurred in any of the rail (R) and electrical equipment (20) connected thereto.
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Inventors:
HASHIMOTO NAOKI (JP)
SONOBE MASAKAZU (JP)
SANO MINORU (JP)
KIKUNO TAKAHIRO (JP)
ICHIKAWA YUTA (JP)
MORIMOTO YOHEI (JP)
SONOBE MASAKAZU (JP)
SANO MINORU (JP)
KIKUNO TAKAHIRO (JP)
ICHIKAWA YUTA (JP)
MORIMOTO YOHEI (JP)
Application Number:
PCT/JP2021/013566
Publication Date:
October 14, 2021
Filing Date:
March 30, 2021
Export Citation:
Assignee:
HIGASHI NIPPON RYOKAKU TETSUDO (JP)
KYOSAN ELECTRIC MFG (JP)
KYOSAN ELECTRIC MFG (JP)
International Classes:
B61L1/18; B61L23/04; E01B35/00
Foreign References:
| JP2010274832A | 2010-12-09 | |||
| JP2516431B2 | 1996-07-24 | |||
| JPH07245629A | 1995-09-19 | |||
| EP3150459A1 | 2017-04-05 | |||
| JP2010059688A | 2010-03-18 |
Other References:
See also references of EP 4134293A4
Attorney, Agent or Firm:
KURODA Yasushi et al. (JP)
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