A PHASED ARRAY ULTRASOUND APPARATUS, A SYSTEM FOR USER INTERACTION AND A METHOD FOR FORMING A COMBINED ULTRASONIC WAVE BASED ON A PHASED ARRAY ULTRASOUND APPARATUS

A PHASED ARRAY ULTRASOUND APPARATUS, A SYSTEM FOR USER INTERACTION AND A METHOD FOR FORMING A COMBINED ULTRASONIC WAVE BASED ON A PHASED ARRAY ULTRASOUND APPARATUS

A phased array ultrasound apparatus comprises an array of ultrasound transducer elements (110); a plurality of first electrodes (132) and a plurality of second electrodes (134), such that each transducer element (110) is associated with one first (132) and one second electrode (134); wherein each tr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HALBACH, Alexandre, BILLEN, Margo, ROCHUS, Veronique
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FOR PERFORMING MECHANICAL WORK IN GENERAL
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PERFORMING OPERATIONS
PHYSICS
SOUND-PRODUCING DEVICES
TESTING
TRANSPORTING
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Beschreibung
Zusammenfassung:A phased array ultrasound apparatus comprises an array of ultrasound transducer elements (110); a plurality of first electrodes (132) and a plurality of second electrodes (134), such that each transducer element (110) is associated with one first (132) and one second electrode (134); wherein each transducer element (110) comprises a layer (118) of piezoelectric material between the first (132) and the second electrode (134) to induce emitting of an ultrasonic wave based on control signals, wherein control signals are shared by the transducer elements (110); wherein a phase of an emitted ultrasonic wave differs 180° between two polarization states of the piezoelectric material; and wherein the phased array ultrasound apparatus (100) is configured to individually change polarization state of the piezoelectric material of selected ultrasound transducer elements (110) before activating at least a subset of the ultrasound transducer elements (110) in the array to form a combined ultrasonic wave.