公开(公告)号：US20180231424A1

公开(公告)日：2018-08-16

申请号：US15649934

申请日：2017-07-14

Applicant: Texas Instruments Incorporated ,  Texas Instruments Deutschland, GMBH

Inventor： Umidjon Nurmetov ,  Ralf Peter Brederlow ,  Baher Haroun

IPC: G01L1/22 ,  H01L27/06 ,  G01L1/16 ,  H01L29/84 ,  G01L5/16 ,  H01L27/22 ,  G01L25/00

CPC classification number: G01L1/2293 ,  G01L1/162 ,  G01L1/2281 ,  G01L5/162 ,  G01L25/006 ,  H01L22/34 ,  H01L27/0647 ,  H01L27/0802 ,  H01L27/22 ,  H01L29/84 ,  H01L29/8605

Abstract: An integrated circuit (IC) chip includes a substrate of a piezo-electric material having a first resistivity coefficient associated with a first direction that is longitudinal to a first crystal axis and a second resistivity coefficient associated with a second direction that is transverse to the first crystal axis. The first and second resistivity coefficients have opposite signs. The IC chip also includes a first stress sensing element formed in the substrate and coupled to pass a first current therethrough. The first stress sensing element includes a first resistor aligned such that the major direction of current flow through the first resistor is in the first direction and a second resistor coupled in series with the first resistor and aligned such that the major direction of current flow through the second resistor is in the second direction. A ratio of the resistance of the second resistor to the resistance of the first resistor is equal to a value α, where α is equal to the ratio of the first resistivity coefficient to the second resistivity coefficient.

公开(公告)号：US20180164360A1

公开(公告)日：2018-06-14

申请号：US15890468

申请日：2018-02-07

Applicant: FUJITSU LIMITED

Inventor： Masakazu Kishi ,  Hajime Kubota ,  Masayuki ITOH

IPC: G01R29/22 ,  H03H9/13 ,  H03H9/10 ,  H03B5/32 ,  G01L9/00 ,  G01L1/16 ,  G01L1/10

CPC classification number: G01R29/22 ,  G01L1/10 ,  G01L1/162 ,  G01L9/008 ,  H03B5/32 ,  H03H9/1021 ,  H03H9/13

Abstract: A crystal unit includes: a crystal blank; an excitation electrode formed on the crystal blank and excites a main vibration of the crystal blank; a housing that accommodates the crystal blank; and a sub-vibration electrode formed on the housing and excites a sub-vibration of the crystal blank.And a method for inspecting a crystal unit, the method includes: generating a sub-vibration in a crystal blank by applying an input signal to a sub-vibration electrode formed on a housing, which accommodates the crystal blank, via external electrodes which are electrically coupled to the sub-vibration electrode and formed on the outer surface of the housing; obtaining an output of the crystal unit via the external electrodes; obtaining frequency characteristics of impedance between the external electrodes based on the output; and comparing the obtained frequency characteristics with the reference frequency characteristics indicating the quality of the crystal unit.

公开(公告)号：US20180156138A1

公开(公告)日：2018-06-07

申请号：US15829132

申请日：2017-12-01

Applicant: Rolls-Royce Deutschland Ltd & Co. KG

Inventor： Oroitz ELGEZABAL GOMEZ ,  Victor KRAVCHENKO

IPC: F02C9/28 ,  F02C9/46 ,  G05B13/04 ,  G01L1/16

CPC classification number: F02C9/28 ,  F01D21/003 ,  F01D21/04 ,  F02C9/46 ,  F04D27/001 ,  F05D2220/323 ,  F05D2220/329 ,  F05D2240/50 ,  F05D2240/60 ,  F05D2260/80 ,  F05D2270/021 ,  F05D2270/051 ,  F05D2270/335 ,  F05D2270/808 ,  F16C19/522 ,  F16C2233/00 ,  F16C2360/23 ,  G01L1/16 ,  G01L1/162 ,  G01L5/0019 ,  G01L5/12 ,  G05B13/042 ,  Y02T50/671

Abstract: It is provided a control system for a gas turbine engine. Therein, at least one piezoelectric, in particular piezoresistive element arranged at a bearing adapted to support a shaft of the gas turbine engine is provided, wherein the piezoelectric element is adapted to provide information indicative for a force acting on the bearing to a processing unit, wherein the processing unit is adapted to determine a thrust force of the gas turbine engine based on the information provided by the piezoelectric element.

公开(公告)号：US09921257B2

公开(公告)日：2018-03-20

申请号：US14974434

申请日：2015-12-18

Applicant: FUJITSU LIMITED

Inventor： Masakazu Kishi ,  Hajime Kubota ,  Masayuki Itoh

IPC: G01R29/22 ,  H03H9/10 ,  H03H9/13 ,  H03B5/32 ,  G01L1/16 ,  G01L9/00 ,  G01L1/10

CPC classification number: G01R29/22 ,  G01L1/10 ,  G01L1/162 ,  G01L9/008 ,  H03B5/32 ,  H03H9/1021 ,  H03H9/13

Abstract: A crystal unit includes: a crystal blank; an excitation electrode formed on the crystal blank and excites a main vibration of the crystal blank; a housing that accommodates the crystal blank; and a sub-vibration electrode formed on the housing and excites a sub-vibration of the crystal blank.And a method for inspecting a crystal unit, the method includes: generating a sub-vibration in a crystal blank by applying an input signal to a sub-vibration electrode formed on a housing, which accommodates the crystal blank, via external electrodes which are electrically coupled to the sub-vibration electrode and formed on the outer surface of the housing; obtaining an output of the crystal unit via the external electrodes; obtaining frequency characteristics of impedance between the external electrodes based on the output; and comparing the obtained frequency characteristics with the reference frequency characteristics indicating the quality of the crystal unit.

公开(公告)号：US20170131820A1

公开(公告)日：2017-05-11

申请号：US15297479

申请日：2016-10-19

Applicant: Zhengmin Benjamin Pan ,  Bingke Zhu

Inventor： Zhengmin Benjamin Pan ,  Bingke Zhu

IPC: G06F3/041

CPC classification number: G06F3/0414 ,  G01L1/162 ,  G01L7/082 ,  G06F3/0416

Abstract: A pressure sensor apparatus is provided. The pressure sensor apparatus includes a bottom plate, a pressing interface opposite to the bottom plate, elastic connectors disposed between the bottom plate and the pressing interface and connecting the bottom plate and the pressing interface, a piezoelectric sheet, a drive member abutted against the piezoelectric sheet and the pressing interface and a processor module. When the pressing interface is pressed, the compression elastic connectors can be deformed; the drive member can transmit the deformation to the piezoelectric sheet so that the piezoelectric sheet can be deformed and then output an electrical signal, and the processor module can calculate the degree of the pressing force exerted onto the pressing interface based on the electrical signal outputted by the piezoelectric sheet and choose corresponding programs based on the association relationship information between the predefined degree of pressing force and the programs.

公开(公告)号：US20160138981A1

公开(公告)日：2016-05-19

申请号：US14543124

申请日：2014-11-17

Applicant: OES, Inc.

Inventor： Kiet Ngo ,  Ashkan Rasouli ,  Jean-Paule Mongeau Grice

IPC: G01L1/16 ,  G01M99/00 ,  G01P15/02

CPC classification number: G01P15/133 ,  G01L1/16 ,  G01L1/162 ,  G01L1/165 ,  G01L5/0076 ,  G01P15/02 ,  G01P15/03 ,  G01P15/032 ,  G01P15/13

Abstract: An illustrative example embodiment of a sensing device includes a force sensor that detects a force and provides an output indicative of the detected force. An acceleration sensor detects acceleration and provides an output indicative of the detected acceleration. A processor receives the output from the force sensor and the acceleration sensor. The processor provides an indication of a relationship between the detected force and the detected acceleration.

Abstract translation: 感测装置的说明性示例实施例包括力传感器，其检测力并提供指示检测到的力的输出。 加速度传感器检测加速度并提供表示检测到的加速度的输出。 处理器接收力传感器和加速度传感器的输出。 处理器提供所检测的力与检测到的加速度之间的关系的指示。

公开(公告)号：US09291512B2

公开(公告)日：2016-03-22

申请号：US14123585

申请日：2012-05-31

Applicant: Alexander Schricker ,  Andreas Mayer ,  Dietmar Kröger

Inventor： Alexander Schricker ,  Andreas Mayer ,  Dietmar Kröger

IPC: G01L1/04 ,  G01L1/16 ,  G01L9/00 ,  G01L15/00

CPC classification number: G01L1/16 ,  G01L1/162 ,  G01L9/008 ,  G01L15/00

Abstract: A sensor for measuring pressure and/or force includes at least one measuring assembly having at least one piezoelectric measuring element subjected to compressive stress for dynamic pressure and/or force measurement, and a diaphragm for introducing the pressure and/or the force onto at least the piezoelectric measuring element. The sensor also includes a further measuring assembly that is based on a different physical measuring principle for measuring static pressure and/or force.

Abstract translation: 用于测量压力和/或力的传感器包括至少一个测量组件，其具有至少一个压力测量元件，其经受用于动态压力和/或力测量的压缩应力，以及用于将压力和/或力至少引入至少 压电测量元件。 传感器还包括另外的测量组件，其基于用于测量静压力和/或力的不同的物理测量原理。

公开(公告)号：US20130160567A1

公开(公告)日：2013-06-27

申请号：US13711558

申请日：2012-12-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tomoichiro Ota ,  Masateru Yasuhara

IPC: G01L1/18

CPC classification number: G01L1/18 ,  G01L1/162 ,  G01L5/226

Abstract: A force sensor includes: a planar piezoelectric member whose impedance varies according to an impressing force exerted from an outside; a pair of electrode patterns film-formed on both surfaces of the piezoelectric member; a wiring pattern that is film-formed integrally with the pair of electrode patterns, and connected to the pair of electrode patterns; a power feeding side coil that is provided without contact with the pair of electrode patterns, and connected to an alternating-current source; and a detector that detects variation in impedance of the piezoelectric member, as the impressing force, wherein at least a part or the entirety of one electrode pattern between the pair of electrode patterns is formed volutely extending from the wiring pattern, and is a coil pattern electromagnetically coupled with the power feeding side coil.

Abstract translation: 力传感器包括：平面型压电构件，其阻抗根据从外部施加的施加力而变化; 一对在所述压电元件的两个表面上成膜的电极图案; 与所述一对电极图案一体地成膜并与所述一对电极图案连接的布线图案; 供电侧线圈，其与所述一对电极图案不接触地设置并连接到交流电源; 以及检测器，其检测所述压电部件的阻抗的变化，作为所述施加力，其中，所述一对电极图案之间的一个电极图案的至少一部分或全部从所述布线图案形成为螺旋状延伸的线圈图案 与供电侧线圈电磁耦合。

公开(公告)号：US20130133428A1

公开(公告)日：2013-05-30

申请号：US13401327

申请日：2012-02-21

Applicant: Seung Seoup Lee ,  Il Kwon Chung ,  Jae Hyouck Choi ,  Jun Kyung Na

Inventor： Seung Seoup Lee ,  Il Kwon Chung ,  Jae Hyouck Choi ,  Jun Kyung Na

IPC: G01N29/22 ,  H01L41/22 ,  G01L1/16

CPC classification number: G06K9/0002 ,  G01L1/162 ,  G06K9/0012 ,  H01L41/183 ,  H01L41/37 ,  Y10T29/42

Abstract: There are provided a fingerprint detection sensor and a method of manufacturing the same. The fingerprint detection sensor includes a plurality of piezoelectric sensors arranged in an array on a two-dimensional plane and having a predetermined height; a filler provided to surround the plurality of piezoelectric sensors and isolating vibrations between the plurality of piezoelectric sensors; and a control unit discharging predetermined output signals through the piezoelectric sensors to detect information of an object in contact with, or close to, the plurality of piezoelectric sensors, wherein the plurality of piezoelectric sensors include first surfaces and second surfaces disposed on both ends thereof in a height direction and areas of the first surfaces and the second surfaces are different from each other.

Abstract translation: 提供了一种指纹检测传感器及其制造方法。 指纹检测传感器包括以二维平面排列并具有预定高度的多个压电传感器; 填充物，其被设置成围绕所述多个压电传感器并隔离所述多个压电传感器之间的振动; 以及控制单元，通过所述压电传感器对预定的输出信号进行放电，以检测与所述多个压电传感器接触或接近的物体的信息，其中所述多个压电传感器包括设置在其两端的第一表面和第二表面 高度方向和第一表面和第二表面的区域彼此不同。

公开(公告)号：US08393224B2

公开(公告)日：2013-03-12

申请号：US12669256

申请日：2008-07-18

Applicant: Sylvain Jean Ballandras ,  Jérérmy Masson

Inventor： Sylvain Jean Ballandras ,  Jérérmy Masson

IPC: G01L1/00

CPC classification number: G01L1/162 ,  G01L1/255 ,  G01L3/10 ,  G01L5/167 ,  G01L9/0022 ,  G01L11/06 ,  G01P15/0922 ,  G01P15/18 ,  G01P2015/084 ,  Y10T29/42

Abstract: The invention relates to a stress gauge of the type having an acoustic resonant structure, including a piezoelectric transducer (10) connected to a holder (20), the holder (20) including opposite the piezoelectric transducer (10) an imbedded reflecting portion (40). The imbedded reflecting portion (40) reflects the volume acoustic waves generated by the piezoelectric transducer (10) when it is excited according to a harmonic mode of the structure and propagating into said holder (20), the reflecting portion (40) being arranged at a distance from the piezoelectric transducer (10) such that the integral of the stress on the propagation distance of the volume acoustic waves up to their reflection is different from zero.

Abstract translation: 本发明涉及一种具有声学谐振结构的应力计，包括连接到保持器（20）的压电换能器（10），与压电换能器（10）相对的保持器（20），嵌入反射部分（40） ）。 嵌入反射部分（40）反射由压电换能器（10）产生的体积声波，根据该结构的谐波模式激励它并传播到所述保持器（20）中，反射部分（40）被布置在 与压电换能器（10）的距离使得体积声波的传播距离直到其反射的应力积分不同于零。