Monolithic Three-Axis Magnetometer
AssigneeLabSys LLC
InventorsYue Huang, Jue Lu
Life of this patent
Estimating the term…
Abstract
A three-axis magnetic field sensing device, a magnetometer, and methods of fabricating and testing are presented. The magnetometer comprises a plurality of sloped surfaces. A plurality of magnetic sensing units is disposed on the slopes. A magnetic field can be measured by the sensing units. Each of the three orthogonal-axis components of the magnetic field, a Euclidean vector, can then be solved by using a simple algorithm as an expression of the sensing unit measurement values and slope angles. Polarization, testing and characterization of the device could be done by applying a magnetic field along a common axis to all sensing units, along which each sensing unit has sensitivity.
Claims9
A three-axis magnetic field sensing device, comprising:
- a. in combination, at least one pyramid and means for providing a plurality of slope surfaces intercepting a reference plane with slope angles,
- b. a plurality of field sensing apparatus disposed on a collection of said slope surfaces so that components of a magnetic field with respect to said slope angles can be measured,
- whereby said magnetic field can be represented by a group of three mutually orthogonal vectors each in a mathematical expression in terms of measurement values of said field sensing apparatus and said predetermined slope angles.
Dependencies are inferred from the claim text.