Ultrasonic transducer for a proximity sensor
AssigneeHyde Park Electronics LLC
InventorsRand Kalani Ray, Piyush J. Shah
Life of this patent
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Abstract
An ultrasonic transducer assembly for use in sensing the location of objects in proximity to the transducer. The ultrasonic transducer assembly includes a substrate member, a piezoceramic resonator plate supported on a planar surface of the substrate member adjacent to a peripheral edge of the substrate member, and a coupler connected to a surface of the resonator plate for acoustically coupling the resonator plate to a medium in contact with the coupler.
Claims20
An ultrasonic transducer assembly for use in sensing the location of objects in proximity to the transducer, said ultrasonic transducer assembly comprising:
- a substrate member comprising a planar surface and a peripheral edge;
- a piezoceramic resonator plate supported adjacent to said planar surface;
- and
- a coupler connected to a surface of said resonator plate for acoustically coupling said resonator plate to a medium in contact with said coupler;
- wherein said resonator plate is supported in cantilever relation on a contact pad extending in spaced relation generally parallel to said substrate member.
An ultrasonic transducer assembly for use in sensing the location of objects in proximity to the transducer, said ultrasonic transducer assembly comprising:
- a substrate member comprising a planar surface and a peripheral edge;
- a piezoceramic resonator plate supported adjacent to said planar surface;
- and
- a coupler connected to a surface of said resonator plate for acoustically coupling said resonator plate to a medium in contact with said coupler;
- wherein said resonator plate comprises a rectangular plate defining an elongated major dimension and a minor dimension and said coupler is attached adjacent an end of said major dimension.
An ultrasonic transducer assembly for use in sensing the location of objects in proximity to the transducer, said ultrasonic transducer assembly comprising:
- a substrate member comprising a planar surface and a peripheral edge;
- a piezoceramic resonator plate supported adjacent to said planar surface;
- and
- a coupler connected to a surface of said resonator plate for acoustically coupling said resonator plate to a medium in contact with said coupler;
- wherein said coupler comprises a substantially rigid plate-like diaphragm member extending transverse to said resonator plate.
An ultrasonic transducer assembly for use in sensing the location of objects in proximity to the transducer, said ultrasonic transducer assembly comprising:
- a substrate member comprising a printed circuit board defining a planar surface and a peripheral edge;
- a piezoceramic resonator plate including a planar inner surface supported at said planar surface adjacent to said peripheral edge;
- electrical contacts between said printed circuit board and said resonator plate for connecting said resonator plate to a power supply;
- and
- a coupler comprising a planar member including opposing first and second sides, said first side extending transverse to and connected to a surface of said resonator plate for acoustically coupling said resonator plate to a medium in contact with said second side of said coupler.
A sensor including an ultrasonic transducer assembly for use in sensing the location of objects in proximity to the transducer, said sensor comprising:
- a substrate member comprising a printed circuit board defining a planar surface and a peripheral edge;
- a rectangular piezoceramic resonator plate defining an elongated major dimension and a minor dimension, said resonator plate being supported in cantilever relation on said substrate member with its elongated major dimension extending from said peripheral edge of said substrate member;
- electrical contacts between said printed circuit board and said resonator plate for connecting said resonator plate to a power supply, one of said electrical contacts forming a cantilever support for said resonator plate on said substrate member;
- and
- a disk-shaped coupler comprising a planar member including opposing first and second sides, said first side extending transverse to and connected to a surface of said resonator plate, said coupler being acoustically excited by said resonator plate to transmit a signal to an object in proximity to said coupler, and said coupler receiving and transmitting reflected signals from said object to said resonator plate.
Dependencies are inferred from the claim text.