Real Time System for Measuring the Pantograph Vertically Movement

The measuring of the geometrical parameters regarding the contact line in electric railway transportation presumes a real time acquisition system with high accuracy transducers. Present paper proposes a system for measuring in real time the pantograph vertically movement, which contains a host computer, an integrated controller NI MyRIO, a temperature sensor and an ultrasonic distance sensor. The computing application can display the time variation of measured distance using numerical filters and also to save the information into data files. Real time module provides accuracy, giving a precise timing to acquiring and processing subroutines. Presented method is tested using a laboratory pantograph.