Operating Instructions
NAV350
Product description
8013889/ZML0/2017-06-09
© SICK AG · Germany · All rights reserved · Subject to change without notice
39
Chapter
3
Reflector height
The vertical size and the vertical position of the reflectors are to be chosen such that the
measurement beam is incident on the reflector even on an uneven floor. The maximum
scanning range of the NAV350 is 70 m (229.66 ft) onto reflectors. It is possible to deter-
mine the minimum reflector heights based on the characteristics of the floor and the meas-
urement distance. The measurement beam on the NAV350 increases in size by around
5 mm (0.63 in) per metre measurement distance (see
3.10.3 on page 37
). Tipping of the
AGV due to unevenness on the floor must be taken into account as appropriate (incl. safety
supplement). Recommended reflector heights are 500 mm (19.69 in) for a measurement
distance up to 30 m (98.43 ft), 750 mm (29.53 in) for a measurement distance up to 46 m
(150.92 ft) and 1000 mm (39.37 in) for a measurement distance up to 70 m (229.66 ft).
Fig. 23:
Reflector height as a function of the distance from 0 to 70 m
Important
The values stated in
fig. 23
apply without taking into account unevenness on the ground
and tipping of the AGV by the load!
reflector diameter
The recommended diameter of cylindrical reflectors is 80 mm (3.15 in). If the diameters of
the reflectors differ, it can lead to deviating measurement characteristics. Within a layer the
diameter of cylindrical reflectors can vary. However, if it is intended to map the entire layer,
only reflectors with the same diameter may be used.
Reference points for the reflectors
To unambiguously determine the coordinates of a reflector using the NAV350, the surface
of the reflector must be reduced to a reference point:
In the case of cylindrical reflectors the reference point is at the intersection between the ver-
tical axis of the cylinder and the scan plane, which in general is at half the height of the re-
flector.
0
Distance in m
Siz
e i
n mm
20
40
80
100
0
200
Reflector height
400
60
800
600
1000