Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Reexamination Certificate
2011-06-14
2011-06-14
Kwok, Helen C. (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
Reexamination Certificate
active
07958782
ABSTRACT:
Devices (1) are provided with sensor arrangements (2) comprising field generators (10) for generating magnetic fields and first/second/third elements (R1-R4, S1-S4, T1-T4) for detecting first/second/third components of the magnetic fields in a plane and movable objects (14) for, in response to changing the first/second/third accelerations of the moveable objects (14) in first/second/third directions, changing the first/second/third components of the magnetic fields in the plane. The first (second, third) field detector (11, 12, 13) is more sensitive to the first (second, third) acceleration than to the other accelerations. Such devices (1) have a good sensitivity and a good linearity. The elements (R1-R4, S1-S4, T1-T4) form part of bridges. The first elements (R1-R4) may be in round or rectangular form and the second and third elements (S1-S4, T1-T4) may be in the form of sun beams leaving a sun.
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Kwok Helen C.
NXP B.V.
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