RAILPROF MAIN CHARACTERISTICS
The present RAILPROF configuration is controlled by a Windows Phone running on Windows 10.
On the basis of research at TU Delft, in cooperation with the Dutch Infra Provider ProRail, force-based standards have been developed. The standards are expressed in terms of a quality index QI, which is directly related to the first derivative of the measured vertical rail geometry.
Vertical and lateral geometry are measured simultaneously. The measuring results are automatically sent to the Smart Phone, which carries out all the calculations like filtering and computing the first derivative of the vertical geometry, in accordance with the force-based weld standards of ProRail.
Due to the additional speed classes in the lower speed range the standards are also applicable to metro and tram networks. The RAILPROF will be kept awake as long as the operator is working in the measuring menu on the Smart Phone, whereas otherwise the RAILPROF is switches off after 10 minutes of not being used.
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Esveld Consulting Services is partner of Railprof Instruments
Documents & Manuals
Measuring length: 1,000 mm in accordance with the EN standards for weld geometry;
sampling interval 5 mm.
Transducers: eddy current.
Both vertical and lateral rail geometry are measured.
TAYLOR MADE FLIGHT CASES
SOME WINDOWS PHONE SCREEN SHOTS
Templates can be created for each measuring job via the Templates menu. The values of the active template are used when the measuring process is started. After tapping the command measure the values of the template are shown and can be altered.
If the weld is measured again or a new weld is measured the previous values are kept.
For Glued Insulated Joints (GIJ) a special feature is available to clip out the part between the rail ends at the joint. The eddy current transducer sees this area as a large deviation. When the correction is set to 'Yes', the central 10 mm of the measurement is removed and replaced by values linearly interpolated between the measured values at both ends.
Special Windows based desktop software is provided for viewing, editing, printing and presentation of the measurement results, as illustrated in the screen shots below.
Example of Windows software to view measured profiles.
Example of a print preview.
Example of short wave irregularities (corrugation) to control grinding.
Example of comparing two measurements.
The desktop software offers the possibility to select records on the basis of the quality index QI. Via the find icon a screen is opened in which a choice can be made for QI Top, QI Hor, or both. The selection value is default 1.00, but the user can assign any other value. After OK the screen at the bottom left shows just the selected records, which can be moved now.
The software offers printing facilities to generate one integrated report for a series of measurements. In the above example the reports for Top Assessment are selected and can be printed as one pdf file.
To facilitate German grinding standards a special menu was added to the desktop software. In the wavebands 1-3 cm, 3-10 cm and 10-30 cm the percentage of exceedance of the standard is presented. The standards can be set per waveband as the admissible displacement in mm. Furthermore, the following grinding indices are produced: GA = Grinding Amplitude,
GG = Average Wavelength, GSD = Average Grinding Depth.
MAIN RAILPROF SPECIFICATIONS
ECS Esveld Consulting Services - Groenwal 25, NL-5301 JJ Zaltbommel - email: email@example.com - tel: +31 654368360
MRT MRT-Productions - email: firstname.lastname@example.org