Patent ID: 11946995
Assignee: TECHMAH MEDICAL LLC
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method of accounting for magnetic disturbances within range of two or more magnetometers of an inertial measurement unit, the method comprising:
calibrating the two or more magnetometers of the inertial measurement unit to account for local magnetic field distortions and reference misalignments so all magnetometers are aligned to a reference alignment, wherein calibrating the two or more magnetometers of the inertial measurement unit includes performing a first calibration of the inertial measurement unit not mounted to a ferromagnetic object and performing a second calibration of the inertial measurement unit mounted to the ferromagnetic object to produce a reference dataset;
extracting parameters for distortion detection that are established from the calibrating; and
applying the extracted parameters to captured data from the inertial measurement unit to identify transient magnetic distortion.