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US 6,148,224 AGranted
Apparatus and method for determining movements and velocities of moving objects
AssigneeB-K Medical A/S
InventorJ.o slashed.rgen Arendt Jensen
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AssigneeB-K Medical A/S
InventorJ.o slashed.rgen Arendt Jensen
Estimating the term…
With an apparatus according to the invention it is possible to detect an object's velocity transverse to the direction of propagation of an interacting field. Such transverse movement is detected by applying a field that oscillates spatially in the transverse direction. The method used in the apparatus is applicable where wave energy is used to sense or detect an object by its scattering properties when using either sound waves or electro-magnetic waves. The movement can be detected according to the field properties. The field represented by the sampling pulse must feature a spatial oscillation in the directions, where the velocity components are of interest. Such a transversely oscillating field is e.g. generated by using apodization on individual transducer elements and a special focusing scheme. The apparatus uses waves of either sound or electro-magnetic radiation.
An apparatus for measuring the velocity of a moving object or a collection of moving objects in a region at a distance from the apparatus, the apparatus comprising:
An apparatus for measuring the velocity of a moving object or a collection of moving objects in a region at a distance from the apparatus, the apparatus comprising:
Dependencies are inferred from the claim text.