Patent ID: 8725449
Filing Date: 2014-05-13
Classification: G01R

Abstract:
1. A system, comprising: a housing having dimensions and one or more physical properties similar to that of a cranium; a gelatinous material disposed within the housing, having a viscosity similar to that of brain tissue; a plurality of magnetic field generators, each in a stationary position relative to the housing, each to generate a magnetic field at a corresponding one of multiple frequencies, and oriented with respect to a corresponding one of multiple directions; a first displacement sensor disposed within the gelatinous material and configured to be neutrally buoyant in the gelatinous material, wherein the first displacement sensor includes a plurality of inductive coils, each oriented with respect to a corresponding one of multiple directions, each coil to generate a signal indicative of an electromagnetic force (EMF) induced in the coil by the plurality of magnetic fields, wherein a magnitude of the signal is a function of a position and orientation of the coil relative to positions and orientations of each of the plurality of magnetic field generators; a signal processor to separate each of the signals into a plurality of component magnitudes, each attributable to a corresponding one of the magnetic fields; and a configurable computer-implemented model to correlate between the component magnitudes of the plurality of coils and a corresponding position and orientation of the first displacement sensor.