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公开(公告)号：US11768091B2
公开(公告)日：2023-09-26
申请号：US16826686
申请日：2020-03-23
申请人： Rosemount Inc.
发明人： Jason H. Rud , Kyle J. Kronforst
CPC分类号： G01F1/3266 , G01F1/3273 , G01F1/3287 , G01K13/02 , G01H11/08 , G01K1/08 , G01K7/16 , G01K13/026
摘要： A process fluid temperature measurement system is provided. The process fluid temperature measurement system includes a thermowell configured to couple to a process fluid conduit and extend through a wall of the process fluid conduit. The process fluid temperature measurement system also includes a temperature sensor assembly disposed within the thermowell, the temperature sensor assembly including a sensor capsule having at least one temperature sensitive element disposed therein. The temperature sensor assembly also includes a vibration sensor coupled to the sensor capsule, the vibration sensor being configured to produce a vibration signal in response to detected vibration. The process fluid temperature measurement system further includes transmitter circuitry coupled to the vibration sensor and configured to receive the vibration signal and produce an output based on the received vibration signal.
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公开(公告)号：US20230284536A1
公开(公告)日：2023-09-07
申请号：US18175460
申请日：2023-02-27
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.
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公开(公告)号：US11750970B2
公开(公告)日：2023-09-05
申请号：US17372440
申请日：2021-07-10
发明人： A. Martin Mallinson
CPC分类号： H04R3/00 , G01H11/08 , H03F3/20 , H03K5/24 , H03F2200/03 , H04R2420/03
摘要： An apparatus and method for determining signals representative of events in the environment of a reactive transducer while being driven by a switching amplifier is disclosed. While the switching amplifier is in a zero voltage state, a signal capture circuit that is also in a zero voltage state is connected to the transducer for a relatively brief period of time during which a measurement is made of the residual current flow due to the inductance of the transducer. A prediction of the output signal is then subtracted from the signal measured across the transducer, reducing the overall range of the signal and increasing the relative size of the back-EMF signal compared to any remaining output signal. If desired, conventional echo cancellation can then be performed. The back-EMF signal can then be subjected to further processing by an analog-to-digital converter as known in the art.
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公开(公告)号：US11662248B2
公开(公告)日：2023-05-30
申请号：US17814533
申请日：2022-07-25
发明人： Yongshuai Yuan , Wenjun Deng , Wenbing Zhou , Yujia Huang , Fengyun Liao , Xin Qi
摘要： The embodiments of the present disclosure may disclose a vibration sensor, including: an acoustic transducer and a vibration assembly connected with the acoustic transducer. The vibration assembly may be configured to transmit an external vibration signal to the acoustic transducer to generate an electric signal, the vibration assembly includes one or more groups of vibration diaphragms and mass blocks, and the mass blocks may be physically connected with the vibration diaphragms. The vibration assembly may be configured to make a sensitivity degree of the vibration sensor greater than a sensitivity degree of the acoustic transducer in one or more target frequency bands.
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公开(公告)号：US20190250200A1
公开(公告)日：2019-08-15
申请号：US16269788
申请日：2019-02-07
发明人： David CADA
CPC分类号： G01R29/22 , G01H3/005 , G01H11/08 , G01R31/2829 , G01R31/2836 , H01L41/042 , H01L41/22
摘要： Apparatus and associated methods relate to a functional self-test, including (1) generation of an excitation signal, (2) applying the excitation signal to a unit under test (UUT), the excitation signal including a cyclical signal for a first interval and substantially zero signal for a second interval, (3) determining frequency content of a UUT response signal, and (4) generating a fail result in response to the frequency content below a predetermined threshold. In an illustrative example, the UUT may be a piezoelectric element (PE). The UUT response signal may be processed by a filter, for example. A portion of the filtered UUT response signal, responding to the second interval of the excitation signal, may be analyzed by a fast Fourier transform module (FFTm), for example. In various implementations, the functional self-test may advantageously determine the health of a piezoelectric gas sensing element, periodically, in a field-deployed implementation.
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公开(公告)号：US20180323365A1
公开(公告)日：2018-11-08
申请号：US15970430
申请日：2018-05-03
申请人： CTRL Systems Inc.
IPC分类号： H01L41/053 , G01H11/08 , H01L41/113 , H04R17/10
CPC分类号： H01L41/053 , G01H11/08 , H01L41/113 , H04R17/10
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.
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公开(公告)号：US20180250710A1
公开(公告)日：2018-09-06
申请号：US15754736
申请日：2016-06-27
申请人： Robert Bosch GmbH
发明人： Matthias Karl
CPC分类号： B06B1/0622 , G01H11/08 , G10K9/125 , G10K9/20
摘要： An acoustic sensor for emitting and/or receiving acoustic signals includes a diaphragm having a first surface and a second surface forming oppositely situated sides of the diaphragm and defining a common surface perimeter by their edge, a housing that carries the diaphragm and restricts an expansion of the surface perimeter of the diaphragm during an operation of the acoustic sensor, and a first electroacoustic transducer disposed in a first subsection of the first surface of the diaphragm, the first subsection being outside of a center of the first surface of the diaphragm.
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公开(公告)号：US20180217014A1
公开(公告)日：2018-08-02
申请号：US15747691
申请日：2016-05-31
IPC分类号： G01L1/16 , G01M5/00 , H01L41/113
CPC分类号： G01L1/162 , G01H11/08 , G01M5/0033 , G01M5/0083 , H01L41/1132
摘要： A piezoelectric sensor assembly for measuring a force quantity on a structure includes at least one piezoelectric sensor, each including an element and two electrodes each projecting outward from the element. An electronic processor of the assembly is configured to receive data from the sensor, wherein the data includes a voltage with a magnitude that is indicative of a dynamic load (i.e., amplitude modulation mode) placed upon the structure. The processor may be configured to interrogate the piezoelectric sensor for its resonant frequency change which is indicative of the load applied to the structure at low operation frequency and to which the piezoelectric sensor would not otherwise respond well. The dual mode operation of the piezoelectric sensor extends the frequency range of the strain measurement from the dynamic range to static or quasi-static range.
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公开(公告)号：US20180172472A1
公开(公告)日：2018-06-21
申请号：US15850043
申请日：2017-12-21
IPC分类号： G01D3/08 , B06B1/06 , H01L41/053 , H01L41/047 , H01L41/113 , H01L41/23 , H01L41/313 , H01L41/29 , G01M3/24 , G01H11/08
CPC分类号： G01D3/08 , B06B1/0644 , B06B1/0666 , G01H11/08 , G01M3/243 , G01N29/223 , G01N29/34 , G01N29/36 , H01L41/0475 , H01L41/053 , H01L41/0533 , H01L41/1132 , H01L41/23 , H01L41/29 , H01L41/313
摘要： Embodiments relate generally to an explosion proof ultrasonic detector. The explosion proof ultrasonic detector comprises a metal enclosure configured to face ultrasound pressure waves, a sense element, wherein the sense element is attached to the metal enclosure via solder, a compression element configured to contact the sense element, and a printed circuit board configured to compress the compression element and to connect electrically to the sense element.
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20.发明授权公开(公告)号：US09958418B2
公开(公告)日：2018-05-01
申请号：US15189262
申请日：2016-06-22
申请人： TOTO LTD.
发明人： Yoshiyuki Kaneko
CPC分类号： G01N29/12 , E03C1/05 , E03C1/055 , F21V33/004 , G01H11/08 , G01L1/14 , G06F3/0436 , H03K17/96 , H03K17/964 , H03K2217/96003 , Y10T137/0318 , Y10T137/9464
摘要： A touch detection device capable of operation by a light touch, and of preventing false operations even when used in water handling equipment includes a sensing portion for sensing contact by a target object; a vibration excitation element attached to this sensing portion, a drive circuit for exciting vibration in the sensing portion, and a contact determining circuit for determining whether a target object is contacting a sensing portion based on vibration of the sensing portion after stopping the application of an AC voltage to the vibration excitation element by this drive circuit.
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