MEASUREMENT OF TRAIN SPEED BASED ON THE CROSS-CORRELATION OF ACCELEROMETERS SIGNALS

• Abstract:

  One of the most important tasks to evaluate the reliability and safety of railway transportation in terms of derailment risk, is monitoring the infrastructure condition. Several on-board high-performance devices are used in order to accomplish this task, among which accelerometers mounted on axle-box are recently gaining an increasing interest. Aim of this paper is to identify a numerical procedure able to reconstruct the instantaneous forward speed of a rail vehicle from axle-box acceleration measured data collected by mean of the gravitational accelerometer sensors. The preliminary validation of the proposed method has been carried out on a set of virtual accelerometer recordings generated by a numerical multi-body simulation code. It is believed that, within a more extended modelling framework, the speed profile reconstruction so far obtained will help in detecting critical locations with respect to the derailment risk.
• Keywords:

  train speed, accelerometers, cross-correlation
• Download:

  IMEKO-WC-2015-TC15-328.pdf
• DOI:

  _unreg_wc-2015.328

Event details: