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
【課題】降雨等の天候変化によって生じる交流軌道回路の不正落下に係る異常を検知できる新たな技術の提供。【解決手段】軌道回路監視装置100は、軌道回路の区間境界毎に設置されて計測端末200と、処理装置300とを備える。処理装置300は、軌道回路毎に、送信トランス7の送信電圧に対する送信電流の位相差である送信電流位相差が、時間経過とともに徐々に減少する漸減傾向にあることを示す漸減傾向条件を満たし、且つ、漏れコンダクタンスが異常として報知すべき値まで増加したことを示す閾値条件を満たす場合に、天候変化による当該軌道回路の不正落下に係る異常有りと判定する。【選択図】図1
TRACK CIRCUIT MONITORING APPARATUS
軌道回路監視装置
2019-01-31
Patent
Elektronische Ressource
Japanisch
TRACK CIRCUIT MONITORING DEVICE AND TRACK CIRCUIT MONITORING METHOD
Europäisches Patentamt | 2021
|