Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2005-12-13
2005-12-13
Hassanzadeh, Parviz (Department: 1763)
Electricity: measuring and testing
Magnetic
Magnetometers
C324S260000, C427S457000, C427S458000
Reexamination Certificate
active
06975109
ABSTRACT:
A method and apparatus for sensing a presence of a magnetic field and/or a magnitude of a magnetic flux density of the magnetic field. A direct-current voltage is applied across a first layer of a conductive material, so that a direct current flows in a first direction through the first layer. A second layer of a piezoelectric material is integrated with or positioned adjacent or abutting the first layer. The first layer and the second layer are exposed to or positioned within a magnetic field. A Lorentz force is thus caused, preferably in a direction which is generally perpendicular to the first direction of the direct current and a second direction of the magnetic field to deflect the piezoelectric material thereby causing an output voltage in response to the Lorentz force. A magnetic flux density can be calculated as a function of the piezoelectric output.
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Fredrick Kris T.
Hassanzadeh Parviz
Honeywell International , Inc.
Lopez Kermit D.
MacArthur Sylvia R.
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