Position sensor
First Claim
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1. A position sensor for determining a set position thereof, comprising:
- a time-varying magnetic field generator;
an electrically conductive element positioned such that said time-varying magnetic field generates eddy currents therein;
at least one pick-up for generating a signal in response to said time-varying magnetic field; and
a signal processor arranged to receive said signal and to determine the set position of the position sensor, wherein the conductive element is movable relative to the at least one pick-up such that the signal generated by said pick-up has a magnitude which is dependent on the position of said conductive element, the position of the conductive element corresponding to the set position of the sensor.
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Abstract
A position sensor for determining a set position thereof is disclosed. The sensor comprises means for generating a time-varying magnetic field, an electrically conductive element positioned such that said time-varying magnetic field generates eddy currents therein and at least one pick-up for generating a signal in response to said time-varying magnetic field. Movement of the conductive element relative to the pick-up alters the magnetic coupling between the field generator and the pick-up allowing the set position to be determined unambiguously.
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Citations
8 Claims
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1. A position sensor for determining a set position thereof, comprising:
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a time-varying magnetic field generator;
an electrically conductive element positioned such that said time-varying magnetic field generates eddy currents therein;
at least one pick-up for generating a signal in response to said time-varying magnetic field; and
a signal processor arranged to receive said signal and to determine the set position of the position sensor, wherein the conductive element is movable relative to the at least one pick-up such that the signal generated by said pick-up has a magnitude which is dependent on the position of said conductive element, the position of the conductive element corresponding to the set position of the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification