Hot Axle Box (HABD) and Hot Wheel Detection (HWD) System

multi-beam (8-16 channels) infrared scanning with patented status monitoring (IVC) and RAC

Patented status monitoring (IVC, vibration monitoring) to avoid false alerts and increase system availability
Easy to maintain (scanner change in 5minutes)
Multi-beam scanning for enhanced reliability (10 beams 14cm scan width)
High resistance against computer viruses (Linux OS)
Redundant auto calibration (RAC) for greater security compared with competition models, reliable avoidance of false alerts, high system availability
2D and 3D Thermal image for diagnostics
Special Sun Shot Protection to avoid false alerts and increase availability

Operating Principle

The principle of the hot box detection is as follows:

The infrared emission (9) of the wheel bearings (14) is guided with the help of a gold mirror (8) and a silicium-optics (6) into the infrared detector (5)

The data is evaluated by the controller (1) with 1M/samples and forwarded via Ethernet (12) to the track-side electronic components

The power supply is drawn from (13)

Infrared measurements are amplified by the pre-amplifier (4) with internal Reference

The redundant auto calibration is done with the special dualchannel (RAC) Reference Element fitted in the heater hood (10).

Technical Data

Sleeper-housed, combined HABD/HWD system
HABD scalable from 1-10 channels i.e. about 10 mm x 1000 mm to 14 mm x 1000 mm scan width
HWD scalable from 2x2 to 2x4 channels i.e. about 20 x 1000 mm to 50 x 1000 mm scan width
Maximum no. axles: 2000
Speed: 0.5km/h to 500km/h
Spacing of incoming wheel contacts at 350km/h: about 50m
Maximum distance from electronic components to scanner can exceed 2000m (Standard 100m)
Scanner can be swapped in less than 5 minutes (no need to calibrate or adjust after installation)
Low-maintenance wheel contacts (RSR123)
Dual-Channel reference element (twice as secure than older systems)
Scanner damping system and sleeper ballast monitored automatically (patented vibration monitoring system IVS)
Measuring range HABD: 0-150°C, repeatability at 70°C = +/- 1°C •Measuring range HWD: 80-650°C, repeatability at 250°C = +/- 10°C