Tracking device

Details Tracking device Tracking device

G - Physics

01

S

G01S 17/66 (2006.01) G01S 5/16 (2006.01) G08C 21/00 (2006.01)

Patent

CA 2230411

A tracking device for use in an optical tracking system is disclosed. The tracking device has a plurality of faces, each face having at least three markers which can be tracked by the optical tracking system. The markers may be infrared emitting diodes. The tracking system can individually activate the markers on each of the faces and select the markers which can be most accurately tracked by the tracking system. Portions of the faces are adjacent to one another to form clusters of emitters. The clusters of emitters are separated by at least a predetermined distance corresponding to the tolerance of the optical tracking system. The field of view of the tracking device approximates a section of a sphere centered at the device.

L'invention est un dispositif de centrage pour systèmes de centrage optiques. Le dispositif de l'invention comporte une pluralité de faces dont chacune porte trois marqueurs au moins qui peuvent être repérés par le système de centrage optique. Ces marqueurs peuvent être constitués de diodes émettrices d'infrarouge. Le système de centrage peut activer les marqueurs individuellement sur chacune des faces et choisir ceux d'entre eux sur lesquels il peut se centrer le plus facilement. Les émetteurs des segments des faces qui sont adjacents forment des grappes. Ces grappes d'émetteurs sont espacés d'une distance minimale prédéterminée qui correspond à la tolérance du système de centrage optique. Le champ de vision du dispositif de centrage correspond approximativement à la section d'une sphère centrée sur le dispositif.

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