System and method for electromagnetic navigation in the vicinity of a metal object
US8611986B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Mar 2, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/397
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for performing object localization based on the emission of electromagnetic fields. The electromagnetic fields are simultaneously emitted from different transmitters. One electromagnetic field is emitted at a base frequency; the remaining waves are emitted at frequencies that are harmonics of the base frequency. The composite magnetic fields are measured by sensors. The signal generated by each sensor is subject to a Fourier analysis to determine the strengths of the individual electromagnetic fields forming the composite electromagnetic field. These individual measure field strength data are then used to determine the position and orientation of the sensors relative to the transmitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.