Specific Wayside systems are able to measure when values exceed thresholds. The reporting involves: irregular running behavior, increased derailment risks and irregular stresses caused to wheelsets and rail.
The system records wheel shape irregularities (roundness deviations in the circumference) as peaks presence. The typical types of deviation are classified and quantified (flat spots, polygonization, flattening, welded “pick-ups”, eccentricity). The signals are derived from the measuring elements, which displace the rails in the vertical direction and, then an information array is formed in the evaluation device from the signals, which corresponds at least to the periphery of the wheel. The periodic signal of the shapes of the wheel is evaluated with the aid of a Fourier development and a patented algorithm.TECHNICAL SPECIFICATIONS
|Wayside Train Measuring Systems
|Exact qualification and classification of wheel shape irregularities such has wheel flats
|40 ÷ 200 km/h (25 ÷ 125 mph)