5
Hardware installation
In this chapter is presented how to properly set up a fusionTrack device.
When unpacking the received fusionTrack, it must be checked that no item is missing, and no item is
damaged. The invoice or shipping paper defines the list of items in the shipment. The Atracsys after sale
service should be contacted in case of a missing or damaged item.
5.1 Operating environment requirements
The fusionTrack must
not
be used covered: for instance it
should not be operated under a sterile cover. This would
change the operating temperature of the device and may
change the optical path, both resulting in a change in the
calibration parameters, causing a degradation of the device
accuracy.
Since the fusionTrack can neither be covered with a sterile
drape nor sterilised, the fusionTrack should not be located
in the sterile area.
The fusionTrack must not be used if a hot hair outlet is
present between the fusionTrack and the
markers
. The re-
fraction index changes of the hot and cold air interfaces
could cause wrong measurements.
The fusionTrack has to be placed horizontal. An orientation
other than horizontal (e.g. vertical) can detoriate precision
due to thermal gradients inside the device.
To allow the fusionTrack to deliver measurements, the
markers
must be in the fusionTrack working
volume during the whole navigation process.
The fusionTrack cameras need a high contrast (in the IR spectrum,
∼
850 nm) to operate properly.
Reflective surfaces and polluting lights (sunlight, lamps with a strong IR component around 850 nm, etc.)
must be avoided. The SDK enables the reception of the images as seen by the cameras. In these images,
polluting sources can be identified. During operation, potential sources of sunlight (or equivalent) must be
eliminated. The usage of active fiducials (IR-LEDs) can help to reduce reflections.
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