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Currently, Detection Mode only supports a single ring of sensors.
The scan frame mechanically supports the sensors, and should provide a means of
adjusting the location and orientation of each sensor so that their laser planes can be
aligned. This is not required to eliminate interference between adjacent sensors
(typically the system is set up with adjacent sensors scanning during different slices of
the scan period). Provision to support a system calibration target in the scan zone is
also required. Shrouding to trap laser light from the sensors, and block external light
sources from the scan zone and view of the sensors should be included.
The sensor arrangement shown in the figure below provides a 610mm (24") diameter
scan zone to accommodate logs up to 20" in diameter.
To design other sensor configurations, the user can reproduce the sensor scan zone in a
CAD system, and manipulate the location and orientation of each sensor in the ring to
achieve the desired system scan zone. This will also facilitate design of the system
calibration target.
