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US 9,775,336 B2Granted
Acoustic projector with source level monitoring and control
AssigneeAirmar Technology Corporation
InventorsFrederic S. Boericke, II, Kenneth D. Rolt, Danny J. Fladung
Life of this patent
Estimating the term…
Abstract
In an embodiment, an acoustic projector includes an acoustic transmit transducer capable of producing a sound pressure radiation in response to a driver signal received from a transmit source, an acoustic receive transducer capable of producing a source level signal in response to receiving at least a portion of the sound pressure radiation, and a controller configured to monitor the source level signal and report the source level signal monitored.
Claims28
An acoustic projector comprising:
- a marine acoustic transmit transducer capable of producing a sound pressure radiation in response to a driver signal received from a transmit source;
- a marine acoustic receive transducer capable of producing a source level signal in response to receiving at least a portion of the sound pressure radiation;
- a voltage monitoring circuit configured to measure a voltage level of the driver signal;
- a current monitoring circuit configured to measure a current level of the driver signal;
- and
- a controller configured to monitor the source level signal and to control the driver signal, based on the source level signal, to control an acoustic power of the sound pressure radiation,
- the controller further configured to monitor the measured voltage level and the measured current level to derive an indication of impedance of the acoustic transmit transducer based on the monitored voltage level and the monitored current level to determine whether a defect is present.
4 more elements
A method comprising:
- producing a sound pressure radiation at a marine acoustic transmit transducer in response to a drive signal received from a transmit source;
- producing a source level signal at a marine acoustic receive transducer in response to receiving at least a portion of the high-frequency sound pressure radiation;
- monitoring the source level signal and controlling the driver signal, based on the source level signal, to control an acoustic power of the sound pressure radiation;
- monitoring a voltage level of the driver signal and a current level of the driver signal;
- and
- deriving an indication of impedance of the acoustic transmit transducer based on the monitored voltage level and the monitored current level to determine whether a defect is present.
3 more elements
Dependencies are inferred from the claim text.