Method of and apparatus for magnetically detecting the three-dimensional rotational position and movement of an object
US4661773A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1981 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Jul 29, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2204/418
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic axis is imparted to an object which effects three-dimensional rotational movement. The magnetosensitive semiconductor elements are disposed in the directions of three axes or two axes of a space determined for the object in such a manner that the elements are not in contact with the object. Any variation in direction of the magnetic axis resulting from movement of the object is detected by the magnetosensitive semiconductor elements. The detection signals from the magnetosensitive semiconductor elements are electrically processed so that the three-dimensional rotational position and movement of an object may be detected without contact and continuously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.