Circuit arrangement for a track circuit with multiple signal sources
AssigneeVysoka skola dopravy a spojov
InventorOldrich Poupe
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Abstract
A track circuit is disclosed and includes rails which are fed from a main signal transmitter and which rails, at an information point a required distance from the transmitter, are shunted by a cross impedance, with which impedance, with respect to the track of the main signal, an additional transmitter of an auxiliary signal and a main receiver for receiving signals from the main and additional transmitter are serially connected. A signal indicating a free track is obtained if the main receiver is energized.
Claims4
A circuit arrangement for determining the presence of a rail vehicle on a section of track having at least two rails, said circuit arrangement comprising a main signal transmitter coupled to said rails for introducing a main signal thereon, a cross impedance shunting said rails, an additional transmitter for supplying an auxiliary signal and a main receiver for receiving the signals from said main and additional transmitters, said additional transmitter and said main receiver being connected in series with respect to the track of the main signal and being positioned along said track section, with said cross impedance, at a first information point located at a predetermined distance from said main transmitter, whereby the presence of a rail vehicle on said track section additionally shunts said rails thereby reducing the level of said main signal which is then indicated by said receiver.
Dependencies are inferred from the claim text.