FIELD: railway transport; signaling and communication.
SUBSTANCE: invention relates to internal traffic control. According to proposed method ac signal is applied to rail line at one end, and change of signal at other end is checked depending on coordinate of train shunt, and, basing on character of signal changing, clearing of rail line is determined. At moment of occupation of preceding track circuit, at clear subsequent rail line, reference voltage is determined which is equal to current voltage at input of receiver by which threshold occupation voltage is determined by multiplying value of reference voltage by coefficient of voltage drop, and threshold voltage of clearing determined by multiplying threshold occupation by safety factor. State of rail line is determined by comparing current voltage of receiving end of track circuit with threshold voltages. Reference voltage is corrected proportionally to change of arithmetic mean value of current of supply source which is connected in turn to ends of rail line under consideration.
EFFECT: improved reliability of checking state of rail line.
1 dwg
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