SYSTEM DESCRIPTION
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8020776/12AX / 2019-05-31|SICK
Subject to change without notice
O P E R A T I N G I N S T R U C T I O N S |Free Flow Profiler
Requirements for optimum measurement results
The LMS Axle achieves optimum measurement results when as many measurement
points can be generated in the analysis area (shadow pattern, point patterns for wheels)
as possible. In order to obtain the minimum number of measurement points required,
a mounting position for the LMS Axle must be selected so that the distance between the
2D LiDAR sensor and the wheels is not too large and so that the laser beam’s angle of
incidence is not too steep.
The flatter the angle of incidence and the closer the 2D LiDAR sensor is to the lane, the
more measurement points will be generated.
Fig. 39: AxleDetector project planning – Angle of incidence for the LMS Axle (optimum)
The angular resolution of the LMS Axle is 0.67° at a frequency of 100 Hz.
In the following figure, the mounting position is too high and, because the laser scanner
is too close to the edge of the lane, the angle of incidence is too steep. This means that
fewer measurement points are generated in the analysis area (shadow pattern, point
pattern for the wheels).
Fig. 40: AxleDetector project planning – Angle of incidence for the LMS Axle (too steep)
Note