Procedure for monitoring a switching state of a switch of a train safety system, as well as train safety system

摘要

Procedure for monitoring a switching state of a switch (3, 3a, 3b) in a switching circuit (1, 1 ', 1' ', 1' ''), according to the signal technique, of a safety system for trains with a unit to be controlled (2, 2 '), which is galvanically connected to the switch (3, 3a, 3b) through a line (4), where a test signal is induced by means of a sending device (6) on the line (4) of the switching circuit (1, 1 ', 1' ', 1' ''), where a feedback signal is detected and evaluated through a receiving device (8 , 8a, 8b), where the evaluation is carried out either by filtering the feedback signal and / or through a mathematical correlation between the test signal and the feedback signal, where, with the aid of the result from the evaluation, a conclusion is drawn regarding the switching state.