TRACK CIRCUIT SYSTEM FOR HIGH SPEED TRAFFIC Russian patent published in 2024 - IPC B61L23/16 

FIELD: railway engineering.

SUBSTANCE: track circuits for interval control of train movement on running lines. The system contains a rail line without insulating joints, between the first and second rail threads of which there are windings of inductor transformers distributed along the length of the rail line, the common terminals of which are connected to the grounding conductor, voice-frequency rail circuits, and each pair of adjacent rail circuits is powered by a common signal generator tone frequency and has, respectively, first and second frequency track receivers and corresponding first and second bandpass tone frequency filters, a common tone frequency signal generator, for each pair of adjacent track circuits, with its first and second outputs connected, respectively, to the first and second rail threads through the corresponding choke-transformer, the output windings of which are connected in series between the first and second rail threads, and the common terminal of the connection of the output windings is connected to the grounding conductor. Moreover, the corresponding first and second tone frequency bandpass filters are connected to the inputs of each frequency track receiver, connected in series between the first and second rail threads, the common output of the first and second tone frequency bandpass filters is connected to the grounding conductor, to which the common terminals of the inductor transformer windings are connected.

EFFECT: simplification and increased reliability of the system are achieved by increasing the maximum length of each of the voice-frequency rail circuits and reducing the number of automatic blocking equipment.

1 cl, 1 dwg