公开(公告)号：US11937511B2

公开(公告)日：2024-03-19

申请号：US18109180

申请日：2023-02-13

Applicant: Apple Inc.

Inventor： Majid Khan ,  Roberto M. Ribeiro ,  Savas Gider

IPC: H10N30/20 ,  G01L1/16 ,  G01L1/18 ,  G01L9/00 ,  G01L19/00 ,  G01S3/781 ,  H10N30/00 ,  H10N30/88

CPC classification number: H10N30/88 ,  G01L1/167 ,  G01L1/183 ,  G01L9/0055 ,  G01L19/0092 ,  G01S3/781 ,  H10N30/1071 ,  H10N30/2047 ,  B81B2201/0264 ,  B81B2201/032

Abstract: Aspects of the subject disclosure include a pressure-sensing device consisting of a housing including a membrane and one or more piezoresistive elements disposed on the membrane to sense a displacement due to a deflection of the membrane. A first set of electrodes is disposed over the membrane, and a second set of electrodes is disposed on a permeable port of the device at a distance from the membrane. The first and second sets of electrodes form an electrostatic actuator to exert a repulsive force onto the membrane to reduce the deflection of the membrane.

公开(公告)号：US08368289B2

公开(公告)日：2013-02-05

申请号：US12993597

申请日：2009-04-10

Applicant: Alexander Karabutov ,  Mikhail Lyamshev ,  Vladislav Mikhalevich ,  Manomohan Subudhl ,  Upendra Rohatgl

Inventor： Alexander Karabutov ,  Mikhail Lyamshev ,  Vladislav Mikhalevich ,  Manomohan Subudhl ,  Upendra Rohatgl

IPC: H01L41/08

CPC classification number: G01N29/2418 ,  G01L1/165 ,  G01L1/167 ,  G01N29/041 ,  G01N29/043 ,  G01N2291/0289 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/0423

Abstract: A laser opto-acoustic apparatus and method is applied for nondestructive testing of defects and residual stresses in solids. A nondestructive testing apparatus may have a piezoelectric transducer for measuring oscillations in a solid. The oscillations or waves may be caused from longitudinal, shear, and/or Raleigh waves in the object to be tested. The nondestructive testing apparatus may also include a laser. The laser is capable of generating the longitudinal, shear, and/or Raleigh waves in the object. One method of performing nondestructive testing of materials may include creating at least one of a longitudinal, shear, and/or Raleigh wave in an object and measuring the speed of the wave in the object. The speed of the waves may be compared with the speed of waves in a material without defects to determine whether the object to be tested has defects.

Abstract translation: 激光光声装置和方法用于固体中缺陷和残余应力的非破坏性测试。 非破坏性测试装置可以具有用于测量固体中的振荡的压电换能器。 振荡或波浪可能由被测物体中的纵向，剪切和/或罗利波引起。 无损检测装置也可以包括激光器。 激光能够在物体中产生纵向，剪切和/或罗利波。 执行材料的非破坏性测试的一种方法可以包括在物体中产生纵向，剪切和/或罗利波中的至少一个并测量物体中波的速度。 波的速度可以与没有缺陷的材料中的波的速度进行比较，以确定待测试对象是否具有缺陷。

公开(公告)号：US10060806B2

公开(公告)日：2018-08-28

申请号：US15153141

申请日：2016-05-12

Applicant: Chung-Yuan Christian University

Inventor： Yung Ting ,  Sheuan-Perng Lin ,  Yu-Heng Lin

IPC: G01L1/00 ,  G01L1/16 ,  H02N2/00

CPC classification number: G01L1/16 ,  B23Q17/0966 ,  G01L1/167 ,  H02N2/004

Abstract: A multi-axis piezoelectric stress-sensing device, a multi-axis piezoelectric stress-sensing device polarization method, and a piezoelectric sensing detection system thereof are disclosed. The piezoelectric sensing detection system is used for a machining tool. The multi-axis piezoelectric stress-sensing device includes a piezoelectric sensing film, a first electrode, a second electrode, a third electrode, and a fourth electrode. The piezoelectric sensing film has four corners. The first electrode, the second electrode, the third electrode and the fourth electrode are located at the four corners of the piezoelectric sensing film, and at least one electrode is used to polarize another electrode according to at least one polarization direction.

公开(公告)号：US20170082506A1

公开(公告)日：2017-03-23

申请号：US15153141

申请日：2016-05-12

Applicant: Chung-Yuan Christian University

Inventor： YUNG TING ,  SHEUAN-PERNG LIN ,  YU-HENG LIN

IPC: G01L1/16

CPC classification number: G01L1/16 ,  B23Q17/09 ,  G01L1/167 ,  H02N2/004

Abstract: A multi-axis piezoelectric stress-sensing device, a multi-axis piezoelectric stress-sensing device polarization method, and a piezoelectric sensing detection system thereof are disclosed. The piezoelectric sensing detection system is used for a machining tool. The multi-axis piezoelectric stress-sensing device includes a piezoelectric sensing film, a first electrode, a second electrode, a third electrode, and a fourth electrode. The piezoelectric sensing film has four corners. The first electrode, the second electrode, the third electrode and the fourth electrode are located at the four corners of the piezoelectric sensing film, and at least one electrode is used to polarize another electrode according to at least one polarization direction.

公开(公告)号：US20160069754A1

公开(公告)日：2016-03-10

申请号：US14846299

申请日：2015-09-04

Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Inventor： Shanshan GU-STOPPEL ,  Hans-Joachim QUENZER ,  Joachim JANES ,  Felix HEINRICH

IPC: G01L1/16 ,  G01L5/00

CPC classification number: G01L1/167 ,  B81B3/00 ,  G01L5/00 ,  G02B26/0858 ,  H01L41/0926

Abstract: Embodiments of the present invention provide an apparatus including a micromirror, an excitation structure containing or supporting the micromirror, and at least one piezoelectric sensor. The excitation structure includes at least one piezoelectric actuator, the excitation structure being configured to resonantly excite the micromirror so as to cause a deflection of the micromirror. The at least one piezoelectric sensor is configured to provide a sensor signal dependent on the deflection of the micromirror, the piezoelectric sensor being connected to the excitation structure so that during the resonant excitation of the micromirror, the sensor signal and the deflection of the micromirror exhibit a fixed mutual phase relationship.

Abstract translation: 本发明的实施例提供一种包括微镜，包含或支撑微镜的​​激励结构以及至少一个压电传感器的装置。 励磁结构包括至少一个压电致动器，该激励结构被配置为使微反射镜共振地激发以引起微镜的偏转。 至少一个压电传感器被配置为提供取决于微镜的偏转的传感器信号，压电传感器连接到激励结构，使得在微镜的谐振激励期间，传感器信号和微镜的偏转展现 一个固定的相互关系。

公开(公告)号：US12055453B2

公开(公告)日：2024-08-06

申请号：US17930024

申请日：2022-09-06

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Energy Systems & Solutions Corporation

Inventor： Jun Mitani ,  Takero Mukai ,  Takanobu Kojima ,  Masahiko Nakazono

IPC: G01L23/08 ,  G01L1/02 ,  G01L1/10 ,  G01L1/16 ,  G01L1/25

CPC classification number: G01L23/08 ,  G01L1/02 ,  G01L1/103 ,  G01L1/106 ,  G01L1/162 ,  G01L1/165 ,  G01L1/167 ,  G01L1/255

Abstract: A stress estimation method for a machine structure according to an embodiment is provided with a calculation step of calculating a relationship between the stress generated at the evaluation target position and a physical quantity including a sound pressure or vibration generated at a detection position different from the evaluation target position during vibration of the machine structure. The stress estimation method for a machine structure is provided with a detection step of detecting the physical quantity generated at the detection position during operation of the machine structure. The stress estimation method for a machine structure is provided with an estimation step of estimating the stress generated at the evaluation target position during operation of the machine structure on the basis of the relationship calculated in the calculation step and the physical quantity detected in the detection step.

公开(公告)号：US11906374B2

公开(公告)日：2024-02-20

申请号：US17015302

申请日：2019-02-06

Applicant: YAMAHA Corporation

Inventor： Tomoya Miyata

IPC: G01L1/16 ,  G01H11/08 ,  G01L1/10

CPC classification number: G01L1/167 ,  G01H11/08 ,  G01L1/103

Abstract: Provided is a measurement method including measuring, by using a piezoelectric sheet sensor in contact with a measurement object, vibration transmitted from the measurement object to the piezoelectric sheet sensor and measuring pressing force between the measurement object and the piezoelectric sheet sensor.

公开(公告)号：US20160116366A1

公开(公告)日：2016-04-28

申请号：US14526226

申请日：2014-10-28

Applicant: Paulo Anchieta DA SILVA ,  Fernando DOTTA ,  Laudier Jacques DE MORAES DA COSTA ,  Arhur Martins Barbosa BRAGA ,  Luiz Carlos Guedes VALENTE ,  Daniel Ramos LOUZADA ,  Leonardo SALVINI ,  Paula Medeiros Proença DE GOUVÊA

Inventor： Paulo Anchieta DA SILVA ,  Fernando DOTTA ,  Laudier Jacques DE MORAES DA COSTA ,  Arhur Martins Barbosa BRAGA ,  Luiz Carlos Guedes VALENTE ,  Daniel Ramos LOUZADA ,  Leonardo SALVINI ,  Paula Medeiros Proença DE GOUVÊA

IPC: G01M7/00 ,  G01L1/16 ,  G01N29/04 ,  G01L1/24

CPC classification number: G01M7/00 ,  G01L1/167 ,  G01L1/246 ,  G01M5/0033 ,  G01M5/0041 ,  G01M5/0066 ,  G01N29/11 ,  G01N29/345 ,  G01N29/348 ,  G01N29/4436 ,  G01N2291/012 ,  G01N2291/0258 ,  G01N2291/103

Abstract: Structural health monitoring (“SHM”) methods, apparatus and techniques involve building deformation fields maps (amplitude and phase related to excitation) on the surface of the structural component under monitoring based on a network of strain measurements by fiber Bragg grating sensors.

Abstract translation: 结构健康监测（“SHM”）方法，设备和技术涉及到基于纤维布拉格光栅传感器的应变测量网络，在监测的结构部件表面上建立变形场图（与激励相关的振幅和相位）。

公开(公告)号：US20180141217A1

公开(公告)日：2018-05-24

申请号：US15805777

申请日：2017-11-07

Applicant: Seiko Epson Corporation

Inventor： Toshiyuki KAMIYA

IPC: B25J13/08 ,  G01L1/16 ,  G01G3/16 ,  G01L5/22 ,  G01G3/13 ,  H01L41/047

CPC classification number: B25J13/085 ,  G01G3/13 ,  G01G3/165 ,  G01L1/165 ,  G01L1/167 ,  G01L5/226 ,  H01L41/047

Abstract: A force detection sensor includes a base member having a first surface subjected to an external force and a second surface having a normal direction different from the first surface, and electrode fingers placed on the second surface, wherein an arrangement direction of the electrode fingers is different from the normal direction of the first surface in a plan view of the second surface. Further, the second surface includes a surface of a piezoelectric material. A constituent material of the piezoelectric material is quartz crystal. The first surface crosses an electrical axis of the quartz crystal.

公开(公告)号：US4897541A

公开(公告)日：1990-01-30

申请号：US201599

申请日：1988-06-02

Applicant: Stephen R. Phillips

Inventor： Stephen R. Phillips

IPC: G01D5/26 ,  G01L1/16 ,  G01R15/24 ,  G01R33/032

CPC classification number: G01R15/248 ,  G01D5/268 ,  G01L1/167

Abstract: To detect a physical parameter, a resonator is connected to a body which changes in dimension when subjected to the parameter. Thus, when the body changes in dimension in response to the parameter, the resonance frequency of the resonator is modulated thereby. Such modulations are detected optically to detect and measure the parameter. In the preferred embodiment, the resonator transmits light and light is applied to the resonator so that the light supplied is transmitted through the resonator and so that the modulations of the resonance frequency also modulates the intensity of the light transmitted by the resonator. The modulations of the intensity of the light transmitted by the resonator is detected to detect the parameter.

Abstract translation: 为了检测物理参数，谐振器连接到当受到参数时尺寸变化的主体。 因此，当身体响应于参数而改变尺寸时，谐振器的谐振频率被调制。 这种调制被光学检测以检测和测量该参数。 在优选实施例中，谐振器透射光，并且将光施加到谐振器，使得所提供的光通过谐振器传输，使得谐振频率的调制也调制由谐振器发射的光的强度。 检测由谐振器发射的光的强度的调制以检测该参数。