公开(公告)号：US20230330704A1

公开(公告)日：2023-10-19

申请号：US18128031

申请日：2023-03-29

Applicant: Pepperl+Fuchs SE

Inventor： Mark Heinrich Ewald Rode

IPC: B06B1/02 ,  H02M3/156 ,  H02H3/20

CPC classification number: B06B1/0215 ,  H02H3/20 ,  H02M3/156 ,  B06B2201/40 ,  B06B2201/55

Abstract: The invention refers to a driving circuit (2) for a piezoelectric ultrasonic transducer (4) in an ultrasonic transducer system (1), comprising: a transformer (21) having at least one primary-side winding (22, 22′, 22″); a switching unit having a semiconductor switch (24′, 24″) connected to the at least one primary-side winding (22, 22′, 22″) via a switched connection (A′, A″); and, a control unit (5) which is configured to alternately apply an operating voltage (UB) to the at least one primary-side winding (22, 22′, 22″) or to disconnect it therefrom, a protection circuit (25) which is electrically coupled to the switched connection (A′, A″) and which has a Zener diode (ZD1) which limits a switch-off voltage at the switched connection (A′, A″) in terms of magnitude to a limiting voltage (UG) which corresponds to at least twice the operating voltage.

公开(公告)号：US11731164B2

公开(公告)日：2023-08-22

申请号：US17449235

申请日：2021-09-28

Applicant: The Board of Trustees of the Leland Stanford Junior University

Inventor： Bo Ma ,  Kamyar Firouzi ,  Butrus T. Khuri-Yakub ,  Jose Joseph

IPC: B06B1/02 ,  B06B1/06 ,  B81B3/00 ,  B81C1/00 ,  G01N29/06 ,  G01N29/24 ,  G01N29/22

CPC classification number: B06B1/0215 ,  B06B1/0292 ,  B06B1/0651 ,  B06B1/0662 ,  B81B3/0021 ,  B81C1/00166 ,  G01N29/0654 ,  G01N29/2406 ,  B06B2201/55 ,  B81B2201/0271 ,  B81B2203/04 ,  B81C2201/0157 ,  B81C2201/0178 ,  G01N29/22

Abstract: Aspects of this disclosure relate to driving a capacitive micromachined ultrasonic transducer (CMUT) with a pulse train of unipolar pulses. The CMUT may be electrically excited with a pulse train of unipolar pulses such that the CMUT operates in a continuous wave mode. In some embodiments, the CMUT may have a contoured electrode.

公开(公告)号：US20180287515A1

公开(公告)日：2018-10-04

申请号：US15938443

申请日：2018-03-28

Applicant: Seiko Epson Corporation

Inventor： Tomoaki TAKAHASHI

IPC: H02N2/14 ,  G03B21/14

CPC classification number: H02N2/14 ,  B06B1/0207 ,  B06B1/0603 ,  B06B2201/55 ,  B25J9/12 ,  B41J2/04581 ,  B41J2/14201 ,  G03B21/006 ,  G03B21/142 ,  G03B33/12 ,  G03B2205/0061 ,  H02N2/004 ,  H02N2/0055 ,  H02N2/006 ,  H02N2/026 ,  H02N2/06 ,  H02N2/103 ,  Y10S901/23

Abstract: A piezoelectric drive device includes piezoelectric vibration modules that each include a vibration portion and a transmission unit abutting a driven portion and transmitting longitudinal vibration in an alignment direction of the vibration portion with the driven portion and bending vibration which is a composite of the longitudinal vibration and lateral vibration of the vibration portion intersecting the alignment direction to the driven portion and a controller controlling the modules. The controller controls the modules in a first drive mode wherein the transmission portions of all the modules are driven to perform the bending vibration in a first direction and a second drive mode wherein the transmission portions of some of the modules are driven to perform the bending vibration in the first direction and the transmission portions of other modules are driven to perform the longitudinal or bending vibrations in a second direction opposite the first direction.

公开(公告)号：US20180021016A1

公开(公告)日：2018-01-25

申请号：US15721228

申请日：2017-09-29

Applicant: SOCIONEXT INC.

Inventor： Masato YOSHIOKA ,  Kazuyuki Kanazashi

IPC: A61B8/00 ,  A61B8/14 ,  G01S7/52

CPC classification number: A61B8/4444 ,  A61B8/14 ,  A61B8/4483 ,  A61B8/4494 ,  A61B8/5269 ,  A61B8/56 ,  B06B1/0215 ,  B06B1/0607 ,  B06B2201/55 ,  G01N27/4148 ,  G01N29/34 ,  G01N29/36 ,  G01N29/44 ,  G01N2201/0693 ,  G01N2201/123 ,  G01N2201/125 ,  G01N2201/1263 ,  G01S7/003 ,  G01S7/52079 ,  G01S7/5208 ,  G01S15/8906 ,  H01L23/49827 ,  H01L23/50 ,  H01L27/3297 ,  H01L2224/75347 ,  H01L2224/76347 ,  H01L2224/77347 ,  H01L2224/78347 ,  H01L2224/79347 ,  H04R17/10 ,  H04R25/30 ,  H04R2225/33 ,  H05K1/00

Abstract: An ultrasonic probe includes, a transducer transmitting and receiving ultrasonic waves, and converting ultrasonic signals into voltage signals and vice versa, a first circuit configured to transmit pulse voltage signals to the transducer and receive the voltage signals from the transducer, a second circuit configured to convert the voltage signals received from the first circuit into digital values from analog values, a battery unit configured to supply electric power to the first circuit and the second circuit, and a substrate being provided with the transducer, the first circuit and the second circuit, the first circuit being disposed on a first surface of the substrate, and the second circuit being disposed on a second surface opposite to the first surface of the substrate.

公开(公告)号：US20170326593A1

公开(公告)日：2017-11-16

申请号：US15589930

申请日：2017-05-08

Applicant: InvenSense, Inc.

Inventor： Bruno W. GARLEPP ,  James Christian SALVIA ,  Michael H. PERROTT

IPC: B06B1/06

CPC classification number: B06B1/0629 ,  B06B2201/55 ,  G10K11/346

Abstract: An ultrasonic sensor includes a two-dimensional array of ultrasonic transducers including a plurality of sub-arrays of ultrasonic transducers, wherein a sub-array of ultrasonic transducers of the plurality of sub-arrays of ultrasonic transducers is independently controllable, and wherein a sub-array of ultrasonic transducers has an associated receive channel. A plurality of shift registers is configured to select a receive pattern of ultrasonic transducers of the two-dimensional array of ultrasonic transducers to activate during a receive operation. An array controller is configured to control selection of the ultrasonic transducers during the receive operation according to the receive pattern and configured to shift a position of the receive pattern within the plurality of shift registers such that the ultrasonic transducers activated during the receive operation moves relative to and within the two-dimensional array of ultrasonic transducers.

公开(公告)号：US20170320093A1

公开(公告)日：2017-11-09

申请号：US15278910

申请日：2016-09-28

Applicant: Globalfoundries Singapore Pte. Ltd.

Inventor： Aveek Nath Chatterjee ,  Rakesh Kumar ,  Jaime Viegas ,  Mateusz Tomasz Madzik

IPC: B06B1/06 ,  H01L41/047

CPC classification number: B06B1/0629 ,  B06B1/0238 ,  B06B1/0622 ,  B06B2201/55 ,  G10K11/345 ,  H01L41/047 ,  H01L41/0472 ,  H01L41/0805 ,  H01L41/0973

Abstract: Provided in accordance with the herein described exemplary embodiments are piezo micro-machined ultrasonic transducers (pMUTs) each having a first electrode that includes a first electrode portion and a second electrode portion. The second electrode portion is separately operable from the first electrode portion. A second electrode is spaced apart from the first electrode and defines a space between the first electrode and the second electrode. A piezoelectric material is disposed in the space. Also provided are arrays of pMUTs wherein individual pMUTs have first electrode portions operably associated with array rows and second electrode portions operably associated with array columns.

公开(公告)号：US20160120515A1

公开(公告)日：2016-05-05

申请号：US14920309

申请日：2015-10-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoshio ARAI

IPC: A61B8/08 ,  A61B8/14 ,  A61B8/00

CPC classification number: A61B8/4483 ,  A61B8/14 ,  A61B8/4405 ,  A61B8/4427 ,  A61B8/461 ,  A61B8/54 ,  B06B1/0215 ,  B06B2201/55 ,  B06B2201/76 ,  G01S7/5202 ,  G01S15/8913 ,  G01S15/8925

Abstract: An ultrasonic measurement device 100 includes a pulse signal output circuit 110 that outputs a pulse signal having a rectangular wave based on a clock signal, and a resonance circuit 120 that is connected to an output node of the pulse signal output circuit 110, includes an ultrasonic transducer element, and has frequency characteristics of a low-pass filter. Also, the pulse signal output circuit 110 outputs a plurality of pulse signals that are different from each other in at least one of pulse signal voltage, pulse signal width, and pulse output timing.

Abstract translation: 超声波测量装置100包括输出基于时钟信号的具有矩形波的脉冲信号的脉冲信号输出电路110和连接到脉冲信号输出电路110的输出节点的谐振电路120，包括超声波 换能器元件，并具有低通滤波器的频率特性。 此外，脉冲信号输出电路110在脉冲信号电压，脉冲信号宽度和脉冲输出定时中的至少一个中输出彼此不同的多个脉冲信号。

公开(公告)号：US20160107194A1

公开(公告)日：2016-04-21

申请号：US14883583

申请日：2015-10-14

Applicant: QUALCOMM Incorporated

Inventor： Hrishikesh Vijaykumar Panchawagh ,  Hao-Yen Tang ,  Yipeng Lu ,  Kostadin Dimitrov Djordjev ,  Suryaprakash Ganti ,  David William Burns ,  Ravindra Vaman Shenoy ,  Jon Bradley Lasiter ,  Nai-Kuei Kuo ,  Firas Sammoura

IPC: B06B1/06 ,  H01L41/047 ,  H01L41/053 ,  H01L41/04

CPC classification number: G01S7/5208 ,  B06B1/0207 ,  B06B1/0607 ,  B06B1/0644 ,  B06B1/0666 ,  B06B2201/20 ,  B06B2201/55 ,  G01S7/521 ,  G01S15/04 ,  G01S15/89 ,  G01S15/8915 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/043 ,  G06F3/0436 ,  G06F2203/04101 ,  G06K9/0002 ,  G06K9/00335 ,  G10K11/26 ,  G10K11/34 ,  G10K11/341 ,  G10K11/346 ,  H01L41/047 ,  H01L41/08

Abstract: A piezoelectric micromechanical ultrasonic transducer (PMUT) includes a diaphragm disposed over a cavity, the diaphragm including a piezoelectric layer stack including a piezoelectric layer, a first electrode electrically coupled with transceiver circuitry, and a second electrode electrically coupled with the transceiver circuitry. The first electrode may be disposed in a first portion of the diaphragm, and the second electrode may be disposed in a second, separate, portion of the diaphragm. Each of the first and the second electrode is disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity. The PMUT is configured to transmit first ultrasonic signals by way of the first electrode during a first time period and to receive second ultrasonic signals by way of the second electrode during a second time period, the first time period and the second time period being at least partially overlapping.

Abstract translation: 压电微机械超声换能器（PMUT）包括设置在空腔上方的隔膜，所述隔膜包括压电层堆叠，所述压电层堆叠包括压电层，与收发器电路电耦合的第一电极和与所述收发器电路电耦合的第二电极。 第一电极可以设置在隔膜的第一部分中，并且第二电极可以设置在隔膜的第二，分离的部分中。 第一和第二电极中的每一个设置在压电层的第一表面上或其附近，第一表面与空腔相对。 PMUT被配置为在第一时间段期间通过第一电极传输第一超声波信号，并且在第二时间段期间通过第二电极接收第二超声波信号，第一时间段和第二时间段至少是 部分重叠。

公开(公告)号：US20160066881A1

公开(公告)日：2016-03-10

申请号：US14479743

申请日：2014-09-08

Applicant: General Electric Company

Inventor： Xiang Li ,  Ying Fan ,  Hao Lai

IPC: A61B8/12 ,  A61B8/08 ,  A61B8/00

CPC classification number: A61B8/12 ,  A61B8/0891 ,  A61B8/4483 ,  A61B8/5207 ,  A61B8/54 ,  B06B1/0215 ,  B06B1/0622 ,  B06B2201/55 ,  B06B2201/76 ,  G01S15/8954 ,  G01S15/8961

Abstract: An ultrasound imaging system, a method for ultrasound imaging and a non-transitory computer readable medium that stores instructions executable by one or more processors to perform the method for ultrasound imaging are presented. The method includes convolving one or more base ultrasound pulses corresponding to a particular frequency with a desired code to generate an extended excitation wave. Further, the extended excitation wave is transmitted to a broadband ultrasound transducer to be transmitted towards the target. Subsequently, echo signals reflected back from the target in response to the extended excitation wave are received and de-convolved. One or more ultrasound images of the target corresponding to multiple frequencies are generated based on the de-convolved echo signals.

Abstract translation: 提供超声成像系统，用于超声成像的方法和存储可由一个或多个处理器执行以执行超声成像方法的指令的非暂时计算机可读介质。 该方法包括将对应于特定频率的一个或多个基本超声波脉冲与期望的代码进行卷积以产生扩展的激发波。 此外，扩展的激发波被传输到宽带超声换能器以朝向目标传送。 随后，响应于扩展的激发波反射回目标的回波信号被接收并去卷积。 基于去卷积回波信号生成对应于多个频率的目标的一个或多个超声图像。

公开(公告)号：US20150265961A1

公开(公告)日：2015-09-24

申请号：US14440865

申请日：2013-11-27

Applicant: PEAK 3 PTY LTD

Inventor： Neil Paul Davey ,  Alan Jonathon Ward

IPC: B01D51/08 ,  F01N3/033 ,  B06B1/06 ,  B01D50/00 ,  B01J19/10

CPC classification number: B01D51/08 ,  B01D50/00 ,  B01D53/944 ,  B01J19/10 ,  B06B1/0246 ,  B06B1/06 ,  B06B2201/55 ,  B06B2201/70 ,  F01N3/033 ,  F01N3/035 ,  F01N3/037 ,  F01N2560/06 ,  F01N2560/12

Abstract: A particle matter agglomeration system (100) enables cost effective and efficient filtration of aerosols. The system (100) includes an acoustic chamber (110) for receiving an aerosol, and an ultrasonic transducer head assembly (300) for supporting an ultrasonic transducer (400). A transducer plate (410) faces into the acoustic chamber (110) for applying ultrasonic energy to the aerosol inside the acoustic chamber (110). A shaft (405) extends through the head assembly (300) and connects the transducer plate (410) to the ultrasonic transducer (400). A cooling jacket (315) is positioned around the shaft (405) and between the transducer plate (410) and the ultrasonic transducer (400), wherein the cooling jacket (315) receives cooling fluid for cooling the ultrasonic transducer (400).

Abstract translation: 颗粒物聚集体系（100）能够实现成本效益高效的过滤气溶胶。 系统（100）包括用于接收气溶胶的声室（110）和用于支撑超声换能器（400）的超声波换能器头组件（300）。 传感器板（410）面向声室（110），用于向声室（110）内的气溶胶施加超声波能量。 轴（405）延伸穿过头部组件（300）并将换能器板（410）连接到超声换能器（400）。 冷却套（315）围绕轴（405）定位在换能器板（410）和超声波换能器（400）之间，其中冷却套（315）接收用于冷却超声换能器（400）的冷却流体。