Discriminator device of the sense of circulation on a ferrea via. (Machine-translation by Google Translate, not legally binding)

摘要

Discriminating device of the direction of movement on a railway line in particular for the control of an automatic level crossing, which is equipped with a chain of elements that determine, for each direction of circulation, the sending of an alternating voltage of a post situated upstream of the level crossing towards a downstream station, device for supplying to the control and signaling circuits signals characteristic of each direction of circulation, characterized in that it comprises a set of four saturable transformers distributed in two symmetrical groups that provide the continuous output signals corresponding respectively to the two directions of circulation each comprising a first saturable transformer having a saturation winding, permanently powered by a reference direct current and a saturation winding, said first transformer being supplied the pr immanent by a permanent alternating voltage and having its secondary connected to the line of conduction of the alternating voltage that comes from the position located upstream, for the sense of circulation relative to the considered group, in series with the primary of a second saturable transformer that has a single saturation winding, whose secondary provides, after rectification, the output signal characteristic of the direction, the saturation winding of said first transformer and the saturation winding of said second transformer being connected in series to the output of the group corresponding to the other sense of circulation. (Machine-translation by Google Translate, not legally binding)