Symeo LPR
®
-System
LPR
®
-2DB
Product Documentation
Coordinate
System
Copyright © Symeo 2012
Page 50 of 132
y
y-position of the transponder in own coordinates in mm
height
Height of transponders above ground in mm
direction x
x-component of orientation vector of transponder in own
coordinates
direction y
y-component of orientation vector of transponder in own
coordinates
beam width
Horizontal opening angle of transponder
6.2 Surveying of LPR-2DB Compact Station on mobile unit
The position of the antennas must be surveyed in the coordinate system of the vehicle. The
origin of the coordinate system for the vehicle depends on the vehicle type.
6.2.1
Reference system for vehicle type: forklift
The origin of the reference system for the forklift is on the front axle. The x-axis shows in
positive driving direction. Referring to this origin the antennas and the load position must be
surveyed. The coordinates of the rotation point are in the middle of the fixed axis for a fork
lift.
Center of antenna 0
Center of antenna 1
Center of rotation of vehicle
Reference system forklift
x
y
Center of antenna 3
Center of antenna 2
Steering axis
Fixed axis
Center of load position
Figure 31
– reference coordinate system and installation position of antennas on a forklift
The z-direction shows the height of the antennas related to the ground (compare chapter
surveying of antennas).
6.2.2
Reference system for vehicle type: Van Carrier
The origin of the reference system for the van carrier is on the rotation point of the vehicle.
The x-axis shows in positive driving direction. The coordinates of the rotation are identical to
the load position. Therefore the coordinates for the load position can be set to zero.
