3
SYSTEM DESCRIPTION
20
8020776/12AX / 2019-05-31|SICK
O P E R A T I N G I N S T R U C T I O N S | Free Flow Profiler
Subject to change without notice
3.1.2
Possible layouts
The following chapters illustrate a selection of possible layouts for the measurement site.
The suggested mounting positions can, of course, be adapted to suit the specific on-site
conditions.
3.1.2.1
Layouts for vehicle detection, vehicle measurement, and vehicle classification
The figure below shows a profiling system with two
LMS Width
laser scanners mounted at
the sides of the gantry and one
LMS Length
laser scanner mounted in the middle. This
layout allows you to measure vehicle dimensions and to classify vehicles.
Fig. 3: Layouts – 1 lane, 3 x 2D LiDAR sensors
The two
LMS Width
laser scanners mounted on the gantry above the lane are used to
capture the profile
of the vehicle using individual 2D cross-sections. The beam of the
LMS Width is emitted perpendicular to the road surface. To capture the profile of both
sides of the vehicle, two LMS Width laser scanners are normally used. The purpose of this
is to increase the density of the measuring points in the 3D point cloud and to ensure that
the vehicle is measured on both sides.
The
LMS Length
(which is aligned along the lane) is responsible for vehicle tracking,
measures changes in vehicle speed, and provides the time axis to which the individual 2D
cross-sections are assigned. The beam of the LMS Length is emitted along the direction of
travel.
Note
