1. A contactless detection system adapted for detection the movement of the switch points of a railroad switch comprising:
a transformer for detecting or sensing the position of the switch points, the transformer having a core adapted to link with the switch points, and further having a primary coil means and a secondary coil means wound around the core; and
an electronic interface means for receiving signals from the secondary coil means responsive to, and corresponding with, the positioning of the switch points;
wherein the secondary coil means has two secondary coils wound in opposite directions. |