Measurement device
AssigneeKoninklijke Philips N.V.
InventorsBernhard Gleich, Juergen Rahmer
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Abstract
The application describes embodiments including, e.g., a measurement device comprising: a casing, a first magnet arranged within the casing such that it is rotatable out of an equilibrium orientation responsive to an external magnetic torque acting on the first magnet, a second magnet to provide a restoring torque to force the first magnet back into the equilibrium orientation responsive to an external magnetic torque rotating the first magnet out of the equilibrium orientation, allowing for a rotational oscillation of the first magnet, which is excited by the external magnetic torque, with a resonant frequency, and a temperature sensitive magnetic material to modify the resonant frequency.
Claims19
A measurement device comprising:
- a casing,
- a first magnet arranged within the casing such that it is rotatable out of an equilibrium orientation responsive to an external magnetic torque acting on the first magnet,
- a second magnet to provide a restoring torque to force the first magnet back into the equilibrium orientation responsive to an external magnetic torque rotating the first magnet out of the equilibrium orientation, allowing for a rotational oscillation of the first magnet, which is excited by the external magnetic torque, with a resonant frequency, and
- a sensitive magnetic material to modify the resonant frequency depending on a physical or chemical quantity, wherein the measurement device comprises a compensating magnetic material to modify the resonant frequency in a first frequency direction depending on a temperature change which is opposite to a second frequency direction in which the measurement device would modify the resonant frequency, depending on the temperature change, if the compensating magnetic material were not part of the measurement device.
A measurement device comprising:
- a casing,
- a first magnet arranged within the casing such that it is rotatable out of an equilibrium orientation responsive to an external magnetic torque acting on the first magnet,
- a second magnet to provide a restoring torque to force the first magnet back into the equilibrium orientation responsive to an external magnetic torque rotating the first magnet out of the equilibrium orientation, allowing for a rotational oscillation of the first magnet, which is excited by the external magnetic torque, with a resonant frequency, and
- a temperature sensitive magnetic material to modify the resonant frequency.
Dependencies are inferred from the claim text.