Electromagnetic position and orientation detector for a pilot's helmet
US5109194A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Dec 3, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/004
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic position and orientation detector. A determination is made by a calculator of the position and the orientation of a mobile sensor as a function of the coupling coefficients measured between each of the coils of the sensor and each of the coils of a transmitter. These measurements are tainted with errors due to the imperfections in gain of the various elements of the transmission and reception channels. To eliminate these errors, a stationary sensor is used whose coupling coefficients with the coils of the transmitter are measured to serve as a reference to correct the coupling coefficients between the coils of the transmitter and of the mobile sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.