Roll independent variable inductance inclinometer
US5703484A · kind A · utility
16Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1993 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Oct 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C2009/187
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The pitch sensor of the invention includes a sealed container filled about half full with a magnetic liquid. A pair of coils are wound around the container and produce inductances corresponding to the amount of magnetic liquid disposed within the opening of the coils. As the angle of inclination of the pitch sensor changes, the volume of magnetic liquid becomes greater in one coil, as compared to the other coil, thereby providing a differential inductance. A pulsing circuit pulses the inductances and produces an analog voltage corresponding to the absolute angle of pitch, and a polarity voltage corresponding to the angle quadrant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.