Robust Data Transmission With Eddy Current Sensor System

Abstract

Nowadays railway supervision systems use information carriers installed along the track to define the train position or to provide information about the track as for example maximum velocities. Current data transmission devices are electronic systems, which are expensive to install and maintain. This paper proposes a novel approach to use an eddy current sensor system, mounted on trains for speed measurements, to receive data coded in a metal bar on the track. The transmission is realized with a quadrature amplitude modulation in combination with the given eddy current sensor system to show a cost-efficient and robust alternative to common railway supervision systems.