METHOD FOR MONITORING CONDITIONS OF A BRANCHED TRACK CIRCUIT Russian patent published in 2020 - IPC B61L23/16 

FIELD: railway automatics.

SUBSTANCE: invention relates to railway automatics for control of conditions of branched track circuit. In method signal to rail circuit is supplied from its center, at that input resistances of receiving ends are reduced to minimum of ~0.03 Ohm, track receivers of adjacent rail circuits are connected so that between them there was section of rail line, on which shunt is sensed by track receivers of both rail circuits, wherein shunt sensitivity in the middle of this section is provided not lower than the standard one, and the track receiver near the branched track circuit is only one, which provides joke sensitivity increase due to cyclic connection of the track receiver to branches of the branched track circuit, monitoring the state of the entire track circuit at any point of the train shunt due to retardation of the track relay by the attraction of the repeater, since it is excited only after all branches are free from the rolling stock, wherein if at least one of the branches is occupied, then the track relay and its follower, at that excitation of track relay slowly acting at attraction of repeater occurs only with new excitation of track relay provided that track relay is continuously excited for time exceeding delay time of repeater.

EFFECT: higher reliability of branched rail circuit operation.

1 cl, 3 dwg