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1. 发明授权

US11632623B2 Directional acoustic sensor 有权
公开(公告)号：US11632623B2
公开(公告)日：2023-04-18
申请号：US17717968
申请日：2022-04-11
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Cheheung Kim , Sungchan Kang , Hyeokki Hong , Hyunwook Kang , Yongseop Yoon , Choongho Rhee
IPC分类号： H04R1/32 , H04R3/00 , H04R17/10
摘要： A compact directional acoustic sensor having an improved signal-to-noise ratio is disclosed. The disclosed directional acoustic sensor includes a first sensing device configured to generate different output gains based on different input directions of external energy, and configured to generate at least one first output signal having a first polarity based on external energy received from an input direction; a second sensing device configured to generate different output gains based on different input directions of external energy, and configured to generate at least one second output signal having a second polarity, that is different than the first polarity, based on the external energy received from the input direction; and at least one signal processor configured to generate at least one final output signal based on the at least one first output signal and the at least one second output signal.

2. 发明授权

US11358537B2 Systems and methods for a piezoelectric diaphragm transducer for automotive microphone applications 有权
公开(公告)号：US11358537B2
公开(公告)日：2022-06-14
申请号：US16879147
申请日：2020-05-20
申请人： Ford Global Technologies, LLC
发明人： Joshua Wheeler , Scott Andrew Amman , David D. Knechtges , Ireneusz Trybula
IPC分类号： H04R11/02 , H04R1/02 , H04R1/04 , H04R17/02 , H04R17/10 , H04R7/04 , B60R11/02 , B60R11/00
摘要： Systems and methods for a transducer assembly for a vehicle having a resonating surface. The transducer assembly comprising a housing, a spacer connected to the housing, and a piezoelectric assembly disposed between the spacer and the housing. The spacer is configured to connect to the resonating surface to form an air gap between the resonating surface and the piezoelectric assembly.

3. 发明授权

US11266428B2 Ultrasonic transducer and manufacturing method of ultrasonic transducer 有权
公开(公告)号：US11266428B2
公开(公告)日：2022-03-08
申请号：US16369476
申请日：2019-03-29
申请人： OLYMPUS CORPORATION
发明人： Masaya Toda
IPC分类号： H02N2/00 , A61B17/32 , H04R17/00 , H04R17/10 , H04R31/00 , H04R3/00
摘要： An ultrasonic transducer includes driving source attached to an outer periphery of a bolt with being sandwiched between a distal side block and a proximal side block in a direction along a longitudinal axis, and the driving source includes a piezoelectric element generating ultrasonic vibration by an electric energy being supplied. By transmission of the ultrasonic vibration generated in the piezoelectric element, the ultrasonic transducer in a state in which a first vibration node that is generated in the driving source and a second vibration node that is generated in the bolt are prevented from being displaced with respect to each other in the direction along the longitudinal axis.

4. 发明授权

US11234086B2 Acoustic devices 有权
公开(公告)号：US11234086B2
公开(公告)日：2022-01-25
申请号：US17282115
申请日：2020-01-10
申请人： HEMIDEINA PTY LTD
发明人： Kathryn Lomas , Andrew Reid , Toby McSweeney , Daniel Trott , James Windmill , Joseph Jackson
IPC分类号： H04R25/00 , A61N1/05 , H01L41/18 , H04R17/02 , H04R17/10
摘要： An acoustic device, comprising: a device body comprising: an acoustic membrane having a first surface and a second surface opposite the first surface; and at least one acoustic cavity formed adjacent the first surface of the acoustic membrane; a plurality of piezoelectric beam resonators supported over the first surface of the acoustic membrane and separated from the first surface by the at least one acoustic cavity, each of the plurality of piezoelectric beam resonators having at least one different natural frequency; wherein each of the plurality of piezoelectric beam resonators is configured to oscillate in response to sound pressure waves incident at the acoustic device.

5. 发明申请

US20210344318A1 Piezo Magnetic Resonator/Amplifier 有权
公开(公告)号：US20210344318A1
公开(公告)日：2021-11-04
申请号：US15929370
申请日：2020-04-29
申请人： Timothy J Gindele
发明人： Timothy J Gindele
IPC分类号： H03H3/04 , H04R17/10
摘要： The piezoelectric effect is a well-known phenomenon inherent in some crystal compounds. Silicon dioxide in nature forms a natural hexagonal crystal. The same material when heated to a molten state and then rapidly cooled becomes common glass with no piezoelectric effect. The phenomenon is an electrical or electron relationship to the crystal in that when the modulus is changed the state of electrical charge also changes and in two modalities. If you apply an electrical charge the crystal will change shape and if you change the shape the crystal it will cause an electrical charge.
The device being presented is part of a larger thesis of the phenomenon in that it is presenting mechanical interactivity from low to ultrahigh frequencies. It was also discovered that the reactance of the crystal can be produced under magnetic pressure such that stacking crystals between strong magnets called unit/cells and connecting them in a series/parallel wired conductive arrangement can produce an amplification such that all frequencies of electrical activity in the environment are amplified and produce a rectifiable current flow of electrons.
Envisioned are many possible embodiments of this device. One such embodiment is the application of a coupled toroidal coil that enhances the signals in the environment and magnetically couples the signal into the device.
This device has been prototyped and functions as described. The output characteristics beyond what has been described are not disclosed and are considered proprietary information.

6. 发明授权

US11152560B2 Piezoelectric vibration sensor 有权
公开(公告)号：US11152560B2
公开(公告)日：2021-10-19
申请号：US15970430
申请日：2018-05-03
申请人： CTRL Systems Inc.
发明人： Robert Henry Roche , David Andrew Roche , Robert Matthew Roche
IPC分类号： H01L41/053 , H01L41/113 , H04R17/10 , G01H11/08 , H04R17/02 , G01H1/00
摘要： A contact sensor for the repeatable detection of small, high frequency mechanical vibrations in external systems is presented herein. The sensor includes a metal housing with an attachment device at one end and an output at the other end. Inside the metal housing is a core assembly that includes a piezo transducer assembly suspended or isolated between an actuator and a biasing device. The actuator may be in the form of a ceramic sphere that sits at least partially within a recess on the inside of the housing and is in physical contact with the piezo transducer assembly. The biasing device may be in the form of a spring that causes the piezo transducer assembly to be pressed against the actuator at a contestant and known amount of tension.

7. 发明申请

US20210283566A1 METHOD FOR DISRUPTION OF SOLID MATERIALS IN A FLUID MEDIUM 有权
公开(公告)号：US20210283566A1
公开(公告)日：2021-09-16
申请号：US17331514
申请日：2021-05-26
申请人： James William Masten, JR.
发明人： James William Masten, JR.
IPC分类号： B01J19/00 , B01J19/10 , B06B1/06 , H04R17/10
摘要： A method for disrupting solid materials suspended in a fluid medium includes introducing a fluid comprising solid materials dispersed in a fluid medium into a fluid duct, flowing the fluid through an annular space between a cylindrical wall of the fluid duct and an outer surface of a cylindrical acoustic projector that is concentric with the cylindrical wall, the acoustic projector comprising a plurality of hammer elements spaced apart from one another by a first plurality of slots in the acoustic projector, supplying electrical energy to a transducer coupled to the acoustic projector to cause the acoustic projector to vibrate, thereby causing cavitations in the fluid, and flowing the fluid through an outlet of the disruptor after the fluid has been exposed to the cavitations. The cavitations can disrupt solid materials such as pulp, flowers, stems and seeds to release juice or oils from the materials.

8. 发明申请

US20210250702A1 Sound Producing Device 有权
公开(公告)号：US20210250702A1
公开(公告)日：2021-08-12
申请号：US16789338
申请日：2020-02-12
申请人： xMEMS Labs, Inc.
发明人： Jemm Yue Liang , Martin George Lim
IPC分类号： H04R17/10 , H04R19/02 , H04R1/24
摘要： A sound producing device is provided. The sound producing device comprises a substrate; and a membrane pair, disposed on the substrate, comprising a first membrane and a second membrane; wherein when a driving voltage is applied on the membrane pair, the first membrane and the second membrane deform toward each other, such that air between the first membrane and the second membrane is squeezed outward and an air pulse is generated toward a direction away from the substrate.

9. 发明授权

US10969402B2 Vibration sensor for a portable device including a damping arrangement to reduce mechanical resonance peak of sensor 有权
公开(公告)号：US10969402B2
公开(公告)日：2021-04-06
申请号：US16781067
申请日：2020-02-04
申请人： Sonion Nederland B.V.
发明人： Eddy Dubbeldeman , Raymond Mögelin
IPC分类号： G01P15/08 , H04R17/02 , G01H11/00 , H04R19/01 , G10K11/00 , G01H3/06 , H04R7/04 , H04R19/00 , G10K11/16 , H04R17/10 , H04R7/26
摘要： A vibration sensor having a moveable mass adapted to move in response to vibrations or accelerations. The sensor includes a damping arrangement that includes a damping fluid or gel. The moveable mass is arranged to interact directly or indirectly with the damping fluid or gel in order to reduce a mechanical resonance peak of the vibration sensor. The damping fluid or gel has a viscosity between 1000 cP and 100000 Cp and damping properties that are substantially stable over time.

10. 发明授权

US10932062B2 Ultrasonic proximity sensors, and related systems and methods 有权
公开(公告)号：US10932062B2
公开(公告)日：2021-02-23
申请号：US16259211
申请日：2019-01-28
申请人： Apple Inc.
发明人： Charles L. Greenlee
IPC分类号： H04R25/00 , H04R17/10 , H04S7/00 , H04R5/04 , H04R5/033 , H04R1/10 , G01H11/08
摘要： An ultrasonic proximity sensor can determine one or more characteristics of a local environment. For example, the sensor can emit an ultrasonic signal into a local environment and can receive an ultrasonic signal from the local environment. From a measure of correlation between the emitted and the received signals, the sensor can classify the local environment. By way of example, such a sensor can assess whether an in-ear earphone is positioned in a user's ear. A media device in communication with the sensor can transmit an audio signal to the earphone for audio playback responsive to a determination by the sensor that the earphone is in the user's ear and can redirect the audio signal to another playback device responsive to a determination by the sensor that the earphone is not in the user's ear. Related and other aspects also are described.

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