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公开(公告)号：US10852277B2
公开(公告)日：2020-12-01
申请号：US15302836
申请日：2015-04-09
IPC分类号： G01N29/32 , G01N29/24 , G01L1/10 , G01N29/07 , G01N29/12 , G01L11/06 , G01H11/00 , F01D17/08 , F01D17/02 , G01P15/097
摘要： 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).
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公开(公告)号：US20200149979A1
公开(公告)日：2020-05-14
申请号：US16604431
申请日：2018-04-10
摘要： A sensor with a mechanical waveguide maybe characterized using test ultrasonic signals to generate a baseline signature, and the baseline signature may later be used to detect faults in the sensor.
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公开(公告)号：US10352778B2
公开(公告)日：2019-07-16
申请号：US15033383
申请日：2014-10-31
摘要： A composite active waveguide temperature sensor (10) incorporates a first, sensor portion (16) formed of an environment-resistant material such as ceramic coupled through an ultrasonically-transparent bond (20) to a second, waveguide portion (18) formed of an ultrasonically-transmissive material such as a metallic filament wire. By doing so, the sensor portion (16) may be positioned within a harsh environment and subjected to a temperature to be measured, and the waveguide portion (18) may be used to propagate ultrasonic energy to and/or from the sensor portion (16) to a location distal from the harsh environment for measurement of the temperature. The ultrasonically-transparent bond (20) between these portions (16, 18) limits attenuation of and the introduction of reflections and other noise to an ultrasonic signal propagated across the bond (20).
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公开(公告)号：US11982648B2
公开(公告)日：2024-05-14
申请号：US17107646
申请日：2020-11-30
IPC分类号： G01L11/06 , F01D17/08 , G01H11/00 , G01L1/10 , G01L1/25 , G01N29/07 , G01N29/12 , G01N29/24 , G01N29/32 , G01P15/097 , G01P15/10 , F01D17/02
CPC分类号： G01N29/326 , F01D17/08 , F01D17/085 , G01H11/00 , G01L1/10 , G01L1/255 , G01L11/06 , G01N29/07 , G01N29/12 , G01N29/2462 , G01P15/10 , F01D17/02 , F05D2220/32 , G01L1/106 , G01N2291/0215 , G01N2291/02827 , G01N2291/02872 , G01N2291/02881 , G01N2291/0421 , G01N2291/0422 , G01N2291/0426 , G01N2291/0427 , G01P15/097
摘要： 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).
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公开(公告)号：US12083674B2
公开(公告)日：2024-09-10
申请号：US17298843
申请日：2019-12-12
CPC分类号： B25J19/0091 , B25J17/0216 , F16F1/366 , F16F1/44 , F16F2224/0241 , F16F2224/025 , F16F2228/08 , F16F2230/0005 , F16F2236/04
摘要： A strut suitable for use in parallel manipulator and other applications utilizes an actuation member that is subjected to a quasi-static axial tensioning force to effectively preload the strut to provide axial stiffness and bending flexibility at one or more ends of the strut.
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公开(公告)号：US20210372971A1
公开(公告)日：2021-12-02
申请号：US17107646
申请日：2020-11-30
IPC分类号： G01N29/32 , G01L11/06 , G01N29/24 , G01H11/00 , G01L1/10 , G01N29/07 , G01N29/12 , F01D17/08
摘要： 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).
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公开(公告)号：US20210132008A1
公开(公告)日：2021-05-06
申请号：US16604426
申请日：2018-04-10
摘要： An active mechanical waveguide including an ultrasonically-transmissive material and a plurality of reflection points defined along a length of the waveguide may be driven at multiple resonant frequencies to sense environmental conditions, e.g., using tracking of a phase derivative. In addition, frequency-dependent reflectors may be incorporated into an active mechanical waveguide, and a drive frequency may be selected to render the frequency-dependent reflectors substantially transparent.
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公开(公告)号：US10854941B2
公开(公告)日：2020-12-01
申请号：US16237397
申请日：2018-12-31
发明人： Christopher G. Larsen , Oleg Lobkis , Richard A. Roth , Stuart J. Shelley , Conor Coyan , Jason Feldman , Ann El Demery , Mackenzie Shelley
IPC分类号： H01P3/10 , H01P11/00 , H01L41/257 , H01P3/04 , H01Q13/02
摘要： A broadband waveguide comprising at least one filament configured to transmit a signal therethrough. The broadband waveguide may include one or more reflection suppression techniques including a damping material coupled to at least a portion of the at least one filament and/or at least one reflection point configured thereon. The waveguide may further including a cladding material coupled to the at least one filament. The at least one filament may be coupled to a securing element configured to couple to a surface. The at least one filament may be coupled to a sensor configured to sense the transmitted signal.
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公开(公告)号：US11473981B2
公开(公告)日：2022-10-18
申请号：US16604431
申请日：2018-04-10
摘要： A sensor with a mechanical waveguide may be characterized using test ultrasonic signals to generate a baseline signature, and the baseline signature may later be used to detect faults in the sensor.
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公开(公告)号：US20220032481A1
公开(公告)日：2022-02-03
申请号：US17298843
申请日：2019-12-12
摘要： A strut suitable for use in parallel manipulator and other applications utilizes an actuation member that is subjected to a quasi-static axial tensioning force to effectively preload the strut to provide axial stiffness and bending flexibility at one or more ends of the strut.
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