Position sensing based on ultrasound emission

Details Position sensing based on ultrasound emission Position sensing based on ultrasound emission

G - Physics

01

S

G01S 5/00 (2006.01) A61B 5/06 (2006.01) A61B 19/00 (2006.01) A61M 25/095 (2006.01) G01S 5/22 (2006.01) G01S 5/30 (2006.01) A61B 17/34 (2006.01)

Patent

CA 2300332

An Apparatus for determining the disposition of an object relative to a reference frame includes at least one field generator, which generates an electromagnetic field in a vicinity of the object and at least one transducer, which is fixed to the object. The at least one transducer vibrates at a predetermined vibrational frequency and emits energy, responsive to an interaction of the electromagnetic field therewith. One or more detectors in a vicinity of the object are also utilized to detect the energy emitted by the transducer and generate signals in response thereto. A signal processor is also included for receiving and processing the detector signals to determine coordinates of the object.

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