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US 7,612,554 B2Granted
Bipolar interrogation for magnetostrictive transducers
AssigneeMTS Systems Corporation
InventorArnold F. Sprecher
Life of this patent
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Abstract
A magnetostrictive-based sensor is disclosed which obtains higher return signals through the use of multiple consecutive input pulses
Claims15
A magnetostrictive transducer, comprising:
- a magnetostrictive waveguide;
- a return wire connected to the magnetostrictive waveguide;
- a magnet movable in close proximity to the magnetostrictive waveguide;
- and
- a bipolar driver circuit coupled to the magnetostrictive waveguide, said bipolar driver circuit configured to generate at least two consecutive current pulses of opposite polarity, wherein the current pulses of opposite polarity are timed to generate a return pulse along the magnetostrictive waveguide that has an amplitude larger than if the return pulse was from a single current pulse.
2 more elements
A magnetostrictive transducer, comprising:
- a magnetostrictive waveguide;
- a return wire connected to the magnetostrictive waveguide;
- a magnet movable in close Proximity to the magnetostrictive waveguide;
- and
- a bipolar driver circuit coupled to the magnetostrictive waveguide, said bipolar driver circuit configured to generate at least two consecutive current pulses of opposite polarity wherein the magnetostrictive waveguide comprises a resonance that generates the return pulse such that the return pulse is constructively additive.
2 more elements
A magnetostrictive transducer, comprising:
- a magnetostrictive waveguide with a resonance;
- a magnet movable in close proximity to the magnetostrictive waveguide;
- and
- a bipolar driver circuit coupled to the magnetostrictive waveguide, said bipolar driver circuit configured to generate at least two consecutive current pulses of opposite polarity that are timed such that the resonance generates a constructively additive return pulse.
1 more element
Dependencies are inferred from the claim text.