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US 11,519,882 B2Granted
Ultrasonic transducer system and method for bi-modal system responses
AssigneeTexas Instruments Incorporated
InventorsAmardeep Sathyanarayana, David P. Magee, Anand G. Dabak, Srinath M. Ramaswamy
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Abstract
A transducer system. The system comprises a transducer and circuitry for applying an excitation waveform to excite the transducer during an excitation period. The circuitry for applying has: (i) circuitry for applying a first waveform at a first frequency; and (ii) circuitry for applying a second waveform at a second frequency differing from the first frequency.
Claims27
A system, comprising:
- a first transducer;
- a second transducer;
- and
- a processor communicatively coupled to the first and second transducers, the processor configured to:
- determine a peak response frequency based in part on an amplitude of a first echo waveform from the first transducer and an amplitude of a second echo waveform from the second transducer;
- determine a first frequency and a second frequency based in part on the determined peak response frequency, wherein the first frequency is at a lower frequency than the peak response frequency and the second frequency is at a higher frequency than the peak response frequency;
- apply a two-tone excitation waveform to the first transducer, the excitation waveform comprising a first portion at the first frequency and a second portion at the second frequency;
- receive a received echo waveform from the second transducer;
- and
- determine a value indicative of fluid flow velocity based on correlating the received echo waveform to the two-tone excitation waveform.
7 more elements
A method, comprising:
- determining a peak response frequency based in part on an amplitude of a first echo waveform from a first transducer and an amplitude of a second echo waveform from a second transducer;
- determining a first frequency and a second frequency based in part on the determined peak response frequency, wherein the first frequency is at a lower frequency than the peak response frequency and the second frequency is at a higher frequency than the peak response frequency;
- applying a two-tone excitation waveform to the first transducer, the excitation waveform comprising a first portion at the first frequency and a second portion at the second frequency;
- receiving a received echo waveform from the second transducer;
- and
- determining a value indicative of fluid flow velocity based on correlating the received echo waveform to the two-tone excitation waveform.
3 more elements
A system comprising:
- a first transducer;
- a second transducer;
- a first reflector aligned with the first transducer;
- a second reflector aligned with the first reflector and the second transducer;
- a processor coupled to the first transducer and the second transducer, the processor configured to:
- determine a first frequency and a second frequency based on a peak response frequency, wherein the first frequency is at a lower frequency than the peak response frequency and the second frequency is at a higher frequency than the peak response frequency;
- apply a two-tone excitation waveform to the first transducer, the excitation waveform comprising a first portion at the first frequency and a second portion at the second frequency;
- and
- determine a value indicative of fluid flow velocity based on correlating a received echo waveform to the two-tone excitation waveform from the second transducer.
6 more elements
Dependencies are inferred from the claim text.