Laser based wheel force diagnostics type "Lasca®" for the determination of wheel-rail forces and evaluation of tread damages under operating conditions by wayside montoring

Our system is in the position to monitor each wheel fully automatically via the wheel force diagnosis from the operational use. This allows the "condition-based maintenance" of your vehicles. LASCA® is LGA / TUV certified and replaces - in demonstrating the same security - the manual runout measurements in the workshop. Our monitoring system has a built-approval of the Gernam Railway Authorities (EBA) for all track types and speeds. The software has grown in the market, is modularly designed and includes all international experience in Europe, the USA and Asia (China).

By a wayside monitoring the vehicles in use and the graphical data-handling, it self-calibrating monitoring system, there is a convenient tool for an integrated quality management. It allows not only statistical data collection and the immediate notification of limits (eg flats). The selective investigation of abnormal wear on the wheel and bogie are possible over the evaluation of the dynamic running behavior of the vehicles.

Technical Information


The advantages of the patented measurement system at a glance:

Sensors in the track area - proven for years:

  • Laser-assisted, directional strain detection of the rail (bending moment).
  • Long-term stable, positive fit sensors clamped attachment without opening the superstructure.
  • Quick installation and maintenance in natural train breaks without affecting the train transports through standardized and pre-assembled modules.
  • Easy adjustment of sensors with optical adjustment (light spot on the sensor produces a voltage division, similar to the center tap of a sliding resistance).
  • Removable, mounted on O-rings beam and weather protection.
  • No removal in track maintenance (plug, grinding, etc.).
  • No impairment of train detection systems.
  • EBA approval for all track and track systems at all speeds.
PC based the latest generation of measurement:
  • Network-based, synchronous data acquisition of 24 channels, 16 bit resolution and 500 kHz sample rate sum.
  • Integration of digital inputs and outputs for software-controlled processes.
  • Graphical configuration of the monitoring system with live display of the raw signals - direct control of all settings via remote maintenance.
  • Hardware and software for automatically controlled monitoring of the overall system.
  • Integration of external data sources such as Train bus numbers, transponder.
  • Encrypted communication levels over LAN, Internet, Mail, FTP, radio, SMS - File formats: XLS, XML, TXT.
  • Graphic data processing in the customer's server through database synchronization with track machine.
  • Operating system from Windows. 7
Complex analysis and reporting software:
  • Modular software for automatic wheel, axle, and vehicle identification and assessment according to customer specific limits such as:
    • Flat spots and spalling in number and mm / wheel.
    • Runout in the form and power / wheel.
    • Load shifts in axle bogie and vehicle.
    • Dynamic running behavior of the vehicles, etc.
  • Graphical data processing
  • Modulare signal lines
    • Instant message with traffic light status and malicious code.
    • Filtered customer data train / vehicle.
    • Daily lists and statistics.
    • Vital signs and maintenance instructions.



Measuring Sensor
Laser based deformation measurement oft the track
Number of measuring points
2 x 6, clamped in sleeper cpmpartments
Measuring distance / Settlement wheel
ca. 4000 mm, = wheel dia. 250 mm until 1273 mm
Range Sensor
10 kg until 100 Tonnen
Resolution / division step
10 kg

10 until 380 km/h, optimal maximum operating speed on the intended use

Temperature range track
- 45°C until + 70°C
Electrical connection
230 V (AC) / 50-60 Hz, track 5 V, 12 V, 24 V (DC)
Input interfaces
ZLV Bus, Transponder, Rail Switch, Temperatur
Output interfaces
DSL, LAN, Intranet, Internet, E-Mail, FTP, BKU, ISDN, Funk


Made in Germany (EU)