| 摘要 |
<p>The invention relates to an installation for controlling track circuits, which uses alternating current pulses in four sequences, to be employed in stations with railway electrodynamic interlocking installation for sensing the free or busy condition of the insulated station sections. According to the invention, the installation uses alternating current impulses of 75 Hz in 4 sequences and consists of an emitter generating a number of 64 synchronizing signals, 4 control signals of 4 static switches (CTS) and a number of 12 internal protection signals for detecting the state of shortcircuit or of interruption of a static switch (CTS);a static switch block (BCTS) consisting of 4 static switches (CTS), which during the active period of the control signal injects into the tracks alloted to the isolated sections in the station through interfacing circuits a number of N sinusoids of signal; 64 receiver modules of a type with double synchronization and 70 track relay control modules, from which 64 are allocated to the receivers and 6 are allocated for the protection devices.</p> |
