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US 2023/0405634 A1Published application
Devices, systems and processes for improving frequency measurements during reverberation periods for ultra-sonic transducers
AssigneeSemiconductor Components Industries, LLC
InventorsZdenek AXMAN, Tomas SUCHY, Petr KAMENICKY
Life of this patent
Estimating the term…
Abstract
Embodiments include a primary short circuit coupled to a primary side of a transformer and a dampening element, coupled to a transducer coupled to a secondary side of the transformer, configured to dampen a received signal during a portion of a reverberation period.
Claims22
-20. (canceled)
A sensor, comprising:
- a transformer having a primary side and a secondary side;
- a primary short circuit coupled to the primary side of the transformer;
- a transducer coupled to the secondary side of the transformer and configured to generate a receive signal during a portion of at least one of a reverberation period or an echo period;
- and
- a phase detector configured to activate the primary short circuit in response to a zero-crossing of the receive signal.
2 more elements
A process, comprising:
- detecting a change in a signal generated by a sensor during at least a reverberation period;
- and
- activating a primary short circuit, coupled to a primary side of a transformer using a phase detector, after detecting the change in the signal such that a parallel resonance on a secondary side of the transformer during the reverberation period is mitigated.
A process, comprising:
- activating a primary short circuit coupled to a primary side of a transformer using a phase detector;
- and
- activating a damping element coupled to a transducer coupled to a secondary side of the transformer,
- the transducer being configured to generate a receive signal during at least a transmission period and a reverberation period,
- the damping element being configured to damp the receive signal during at least a portion of the reverberation period.
2 more elements
Dependencies are inferred from the claim text.