KRAB S-LIGHT with the LPS scanner mast raised, standing on ballasted track beside a bridge railing.

LPS - Laser Profile Scanner

Name: LPS - Laser Profile Scanner
Brand: KZV s.r.o.

Model: LPS Add-On Scanner

Track clearance scanner with two rotating lasers — tunnels, platforms, overhead line equipment (OLE), vegetation, plus track geometry

Two rotating laser heads scan the complete track envelope — tunnels, platforms, overhead line equipment, and vegetation — while the trolley measures track geometry. Add-on to KRAB Heavy or S-LIGHT.

Measurement Tasks

Clearance and Catenary

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At a glance

Weight:Add-on to KRAB

Max Speed:~4 km/h (walking)

LPS - Laser Profile Scanner in Detail

LPS on a KRAB S-LIGHT in a rail yard: the SICK laser scanner on top of the mast, the track camera below it, the tablet running Krab OnBoard on the holder

The same trolley in front of a station building, ready to be pushed at walking speed

LPS measurement on a station track in winter, signals and masts along the line

Close view of the winter set-up: SICK scanner and track camera on the mast, optional rail profile cameras fitted over both rails at the front of the trolley

What the scanner records: the 3D point cloud of a tram line at night in LPS Evaluation Suite, with a cross section marked for clearance checking

Overview & Specifications

Why Choose LPS - Laser Profile Scanner

You need clearance profile verification for tunnels, structures, and infrastructure safety.
Documenting overhead line equipment (contact wire, registration points, masts) is part of your inspection program.
You want simultaneous track geometry + infrastructure scanning in one pass.
You already have KRAB Heavy or KRAB S-LIGHT as a base platform.

Two rotating laser scanners provide 360° coverage for complete track envelope reconstruction: tunnels, station platforms, overhead line equipment, vegetation or any object along the track. Built on the KRAB platform, so full track geometry is measured in the same pass, and rail profiles too when the trolley carries the 3D cameras. A fully synchronized Full HD camera adds the visual record.

Evaluation in LPS Evaluation Suite — static and dynamic clearance in 2D cross section and 3D point cloud, with modules for station platforms (edge offset and height), overhead line equipment (OLE: contact wire height and stagger, registration points, mast positions), track geometry graphs and a 360° surface distance map
Measuring software — Krab OnBoard 2.0 shows the clearance profile live, together with track geometry or rail profiles
GPS-positioned — all data georeferenced with Garmin GPS; the measured section is shown on the map with the reference profile infringements
Manual operation — push at typical walking speed (~4 km/h); after the run the data is copied to a USB flash drive and evaluated on a PC
Planned: ballast profile measurement

Technical Specifications

Laser Rotation Speed

100 Hz (6000 rpm)

Laser Operating Mode

Interlaced (two heads)

Angular Resolution

0.1667°

Laser Range

60 m (90% reflectivity)

Camera

Full HD, day/night mode

GPS

Garmin GPS 16-HVS

Mounting

Add-on to KRAB Heavy or KRAB S-LIGHT

What It Measures

Primary measurement capabilities

Measured quantities for LPS - Laser Profile Scanner
Parameter
Tunnel Clearance
Platform Edge Position & Height
Overhead Wire Height & Stagger
OLE Registration Points & Mast Positions
Vegetation Encroachment
Track Geometry (Gauge, Gauge Variation)
Track Geometry (Cant, Twist)
Track Geometry (Alignment, Top)
Track Distance