Title:
TRACK CIRCUIT MONITORING APPARATUS
Document Type and Number:
Japanese Patent JP2019014277
Kind Code:
A
Abstract:
To provide a new technique capable of detecting an abnormality associated with improper dropping of an alternating current track circuit caused by a weather change such as rainfall.SOLUTION: A track circuit monitoring apparatus 100 includes: measuring terminals 200, each installed at a section boundary of a track circuit; and a processing device 300. The processing device 300 determines that an abnormality associated with improper dropping of the relevant track circuit due to a weather change has occurred when, in the track circuit, a transmission current phase difference, namely a phase difference of a transmission current to a transmission voltage of a transmission transformer 7, satisfies a tapering-off condition which shows that the phase difference is in a trend of tapering off with time, and also satisfies a threshold condition which shows that the leakage conductance has increased to a level requiring a notification of abnormality.SELECTED DRAWING: Figure 1
Inventors:
MURAKAMI YOICHI
SANO MINORU
KITAJIMA TOSHIHISA
SANO MINORU
KITAJIMA TOSHIHISA
Application Number:
JP2017130435A
Publication Date:
January 31, 2019
Filing Date:
July 03, 2017
Export Citation:
Assignee:
KYOSAN ELECTRIC MFG
International Classes:
B61L1/18; G01R31/02
Domestic Patent References:
| JPH11278269A | 1999-10-12 | |||
| JP2005304114A | 2005-10-27 | |||
| JP2009081925A | 2009-04-16 |
Attorney, Agent or Firm:
Yasushi Kuroda
Takekoshi Noboru
Inoue Ichi
Takekoshi Noboru
Inoue Ichi