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：US20180321095A1

公开(公告)日：2018-11-08

申请号：US15689689

申请日：2017-08-29

Applicant: HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： CHIEN-WEN WANG

IPC: G01L1/10 ,  G01L19/00

CPC classification number: G01L1/106 ,  A61H2201/1207 ,  A61H2201/5071 ,  G01L19/0092

Abstract: A health device is also provided. The health device comprises a health device body and a pressure sensing system. The pressure sensing system is located on the health device body. The pressure sensing system comprises a plurality of pressure sensors, a reminder device a battery system, and a main circuit board. The plurality of pressure sensors is spaced from one another. The plurality of pressure sensors, the reminder device, and the battery system are electrically connected to the main circuit board.

公开(公告)号：US09989501B2

公开(公告)日：2018-06-05

申请号：US15150595

申请日：2016-05-10

Applicant: The Boeing Company

Inventor： Hong Hue Tat ,  Yuan-Jye Wu ,  Joseph D. Schaefer ,  Mary J. Mathews ,  Anne Kao ,  Victor P. Pauca ,  Rongzhong Li

IPC: G01L1/10 ,  G01H1/00 ,  G01N29/14

CPC classification number: G01N29/14 ,  G01H1/00 ,  G01L1/106

Abstract: A method and apparatus for analyzing an object using acoustic emissions. Load data is received for the object. Acoustic waveform data is received for the object from an acoustic sensing system. The acoustic waveform data represents acoustic emissions emanating from the object and is detected using the acoustic sensing system. A plurality of bins is created for the load data. A plurality of frequency distribution functions is generated for the plurality of bins using the acoustic waveform data. A set of learning algorithms is applied to the plurality of frequency distribution functions and the acoustic waveform data to generate an output that allows an operator to more easily and quickly assess a structural integrity of the object.

公开(公告)号：US09874484B2

公开(公告)日：2018-01-23

申请号：US14665293

申请日：2015-03-23

Applicant: Seiko Epson Corporation

Inventor： Ryuta Nishizawa ,  Keiji Nakagawa ,  Keiichi Yamaguchi ,  Atsushi Matsuo ,  Fumio Ichikawa

IPC: H01L41/107 ,  G01L1/16 ,  G01L1/10 ,  H01L41/09

CPC classification number: G01L1/162 ,  G01C19/5607 ,  G01C19/5614 ,  G01C19/5621 ,  G01L1/106 ,  H01L41/094

Abstract: A physical quantity detecting device includes a vibrating element and a charge amplifier. The vibrating element includes a first detection electrode, a second detection electrode, a third detection electrode, and a fourth detection electrode. The first and fourth detection electrodes have the same electrical polarity, the second and third detection electrodes have the same electrical polarity, and the first and second detection electrodes have opposite electrical polarities. The first and fourth detection electrodes are connected to the charge amplifier, and the second and third detection electrodes are connected to the charge amplifier.

公开(公告)号：US20170030871A1

公开(公告)日：2017-02-02

申请号：US15302836

申请日：2015-04-09

Applicant: Etegent Technologies, Ltd.

Inventor： Oleg Lobkis ,  Richard A. Roth ,  Christopher G. Larsen ,  Stuart J. Shelley

IPC: G01N29/32 ,  F01D17/08 ,  G01N29/24

CPC classification number: G01N29/326 ,  F01D17/02 ,  F01D17/085 ,  F05D2220/32 ,  G01H11/00 ,  G01L1/10 ,  G01L1/106 ,  G01L11/06 ,  G01N29/07 ,  G01N29/12 ,  G01N29/2462 ,  G01N2291/02827 ,  G01N2291/02872 ,  G01N2291/02881 ,  G01N2291/0421 ,  G01N2291/0426 ,  G01N2291/0427 ,  G01P15/097

Abstract: An environmental condition may be measured with a sensor (10) including a wire (20) having an ultrasonic signal transmission characteristic that varies in response to the environmental condition by sensing ultrasonic energy propagated through the wire using multiple types of propagation, and separating an effect of temperature on the wire from an effect of strain on the wire using the sensed ultrasonic energy propagated through the wire using the multiple types of propagation. A positive feedback loop may be used to excite the wire such that strain in the wire is based upon a sensed resonant frequency, while a square wave with a controlled duty cycle may be used to excite the wire at multiple excitation frequencies. A phase matched cone (200, 210) may be used to couple ultrasonic energy between a waveguide wire (202, 212) and a transducer (204, 214).

Abstract translation: 可以使用包括具有响应于环境条件而变化的超声信号传输特性的导线（20）的传感器（10）来测量环境条件，通过使用多种传播方式感测通过导线传播的超声能量，并且分离效果 使用使用多种类型的传播通过导线传播的感测到的超声能量，从线上的应变对线的温度的影响。 可以使用正反馈回路来激励线，使得线中的应变基于感测到的谐振频率，而具有受控占空比的方波可以用于以多个激励频率激励线。 相位匹配锥体（200,210）可用于在波导线（202,212）和换能器（204,214）之间耦合超声波能量。

公开(公告)号：US20140338469A1

公开(公告)日：2014-11-20

申请号：US14450293

申请日：2014-08-04

Applicant: Panasonic Corporation

Inventor： KOUMEI FUJITA

IPC: G01L1/10

CPC classification number: G01L1/10 ,  G01H1/003 ,  G01L1/106 ,  G01L5/00

Abstract: A load sensor includes a vibrator, a drive electrode provided at the vibrator, a drive circuit that supplies, to the drive electrode, a drive voltage for vibrating the vibrator, a detection electrode that outputs a current in response to a vibration of the vibrator, and an IV converter that converts the current output from the detection electrode into a voltage. The drive circuit includes an operational amplifier that outputs the drive voltage and a resistor connected to the operational amplifier. The drive circuit has a small internal resistance. The IV converter has an inverted input terminal that is virtually grounded and that has the current input thereto. The IV converter may constitute a negative feedback circuit.

Abstract translation: 负载传感器包括振动器，设置在振动器处的驱动电极，向驱动电极提供用于使振动器振动的驱动电压的驱动电路，响应于振动器的振动而输出电流的检测电极， 以及将检测电极的电流输出转换为电压的IV转换器。 驱动电路包括输出驱动电压的运算放大器和连接到运算放大器的电阻。 驱动电路内阻小。 IV转换器具有实际上接地并具有电流输入的反相输入端子。 IV转换器可以构成负反馈电路。

公开(公告)号：US20110232395A1

公开(公告)日：2011-09-29

申请号：US13128468

申请日：2009-10-28

Applicant: Werner Schiffers ,  John R. Webster

Inventor： Werner Schiffers ,  John R. Webster

IPC: G01L1/10

CPC classification number: G01L1/106 ,  G01L3/08

Abstract: A strain sensor apparatus for a rotatable shaft including an emitter/receiver, a vibration element attached to the shaft and arranged for receiving and reflecting signals to and from the emitter/receiver wherein the vibration element includes asymmetric stiffness properties between a radial and axial and/or circumferential directions relative to a rotational axis of the shaft.

Abstract translation: 一种用于可旋转轴的应变传感器装置，其包括发射器/接收器，附接到所述轴并且被布置成用于接收和反射来自发射器/接收器的信号的振动元件，其中所述振动元件包括径向和轴向和/ 或相对于轴的旋转轴线的圆周方向。

公开(公告)号：US20070144269A1

公开(公告)日：2007-06-28

申请号：US11317384

申请日：2005-12-22

Applicant: Mitchell Novack

Inventor： Mitchell Novack

IPC: G01L1/22

CPC classification number: G01L1/106 ,  G01L1/162 ,  G01L1/183

Abstract: An apparatus and method for monolithic force transducers in which a sensed force is applied across only two ends of a pair of force sensing elements so that the pair of force sensing elements are loaded in series with one in compression and the other in tension, whereby the force sensed by each of the two force sensing elements are identically equal in magnitude but opposite in sense.

Abstract translation: 一种用于单片力传感器的装置和方法，其中感测的力仅施加在一对力感测元件的两端上，使得一对力感测元件与压缩装置中的一对力被加载，另一个在张力下被加载，由此 两个力感测元件中的每一个感测到的力在大小上是相同的，但在意义上是相反的。

公开(公告)号：US06584864B2

公开(公告)日：2003-07-01

申请号：US10183225

申请日：2002-06-26

Applicant: John Christopher Greenwood

Inventor： John Christopher Greenwood

IPC: G01L110

CPC classification number: G01P15/123 ,  G01L1/106 ,  G01L1/183 ,  G01L9/0016 ,  G01L9/0019 ,  G01P15/097

Abstract: A resonant sensor comprises a support structure comprising two support points; a laminar resonator suspended between said two support points of said support structure and comprising a plurality of substantially parallel flexural members which are responsive to relative movement of said support points; means for exciting said resonator into a balanced mode of oscillation and means for sensing motion of said resonator. Said means for sensing motion of said resonator is or are spaced from, and linked to, said flexible area of said resonator by means of levers. Said support points are preferably adapted to move relative to each other in response to a difference in pressure, force or acceleration.

Abstract translation: 谐振传感器包括包括两个支撑点的支撑结构; 悬挂在所述支撑结构的所述两个支撑点之间的层状谐振器，并且包括响应于所述支撑点的相对运动的多个基本平行的弯曲构件; 用于将所述谐振器激发成平衡振荡模式的装置和用于感测所述谐振器的运动的装置。用于感测所述谐振器的运动的所述装置借助于杠杆与所述谐振器的所述柔性区域间隔开并与所述谐振器连接。 支撑点优选地适于响应于压力，力或加速度的差异而相对于彼此移动。

公开(公告)号：US06553834B2

公开(公告)日：2003-04-29

申请号：US09907729

申请日：2001-07-17

Applicant: Graeme A. Blake

Inventor： Graeme A. Blake

IPC: G01C1900

CPC classification number: H03H9/2473 ,  G01L1/106 ,  G01P15/097

Abstract: A resonator beam structure that, during vibration of the tines, minimizes coupling of a longitudinal motion of the tines into a support structure to which the resonator beam is attached. The resonator beam includes a pair of tines; a first base region mechanically coupling a first ends of the tines together; a second base region mechanically coupling the second ends of the tines together; a first cutout of a first predetermined geometry at a first predetermined position in a closed interior portion of the first base region; and a second cutout of a second predetermined geometry at a second predetermined position in a closed interior portion of the second base region. The invention includes a method for using finite element analysis to determine an optimum geometry and position of the cutouts.