Signaling Technical Expert trainer .World Class Manufacturing (WCM) Expert Transit System Leader Line 5.
Axle Counter An axle counter is a device on a railway that detects the passing of a train between two points on a track. A counting head (or detection point) is installed at each end of the section, and as each train axle passes the counting head at the start of the section, a counter increments. A detection point comprises two independent sensors, therefore the device can detect the direction and speed of a train by the order and time in which the sensors are passed. As the train passes a similar counting head at the end of the section, the counter compares count at the end of the section with that recorded at the beginning. If the two counts are the same, the section is presumed to be clear for a second train. This is carried out by safety critical computers called ‘evaluators’ which are centrally located, with the detection points located at the required sites in the field. The detection points are either connected to the evaluator via dedicated copper cable or via a telecommunications transmission system. This allows the detection points to be located significant distances from the evaluator. This is useful when using centralised interlocking equipment but less so when signalling equipment is distributed at the lineside in equipment cabinets.
Great visualization of axle counter
Thanks for your sharing
La vitesse, la direction et même les dimensions des essieux 😊
Keep going sir to share more n more knowledge
member of teaching faculty in Railway Training Academy. Conducting Signalling Fundamentals and Railway systems Subject training for GSV B Tech ( Electrical and Electronics) disciplines
2wGood share, but as much as I am aware Evaluator can be at either end of the detection point and the connection to detection point is by Quad cable and not by signalling cables.