DEVICE FOR CHECKING TRACK FOR OCCUPANCY Russian patent published in 2002 - IPC

Abstract RU 2185300 C2

FIELD: railway transport; signaling and communication; traffic control. SUBSTANCE: ac signal is supplied to one end of track circuit, and signal phase is changed in two cyclically repeating periods. At receiving end one value of signals is subtracted from other value. Track is considered non-occupied if difference exceeds threshold value. EFFECT: improved reliability of operation at reduced insulation resistance. 2 dwg

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RU 2 185 300 C2

Authors

Polevoj Ju.I.

Zvezdin I.N.

Troshina M.V.

Dates

2002-07-20—Published

2000-06-27—Filed