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公开(公告)号：US20240353376A1
公开(公告)日：2024-10-24
申请号：US18573593
申请日：2021-06-29
Applicant: Qorvo US, Inc.
Inventor： Cody ROMBACH , Matthew WASILIK , Buu Quoc DIEP
CPC classification number: G01N29/30 , G01N29/022 , G01N2291/0255 , G01N2291/0426
Abstract: Embodiments described herein involve a sensor test structure, comprising a substrate. A moat structure is configured to at least partially surround a resonating structure comprising at least one piezoelectric layer. An electrode comprises an electrode path. The electrode path crosses the moat region at least one time. Each moat crossing is configured to cause a change in resistance based on passivation failure of the moat structure.
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公开(公告)号：US12105056B2
公开(公告)日：2024-10-01
申请号：US18564974
申请日：2022-04-03
Inventor： Genqiang Jing , Yingchao Luo , Xiaobing Li , Hongbo Guo , Qihao Yin
CPC classification number: G01N29/30 , G01N29/2418 , G01N33/383
Abstract: The disclosed are a deflection calibration apparatus and method for a laser type high-speed deflection tester. The apparatus comprises rigid supports, rotating discs, driving systems and a deflection calibration unit; the rotating discs are mounted on the rigid supports and driven by the driving systems to rotate, and upper surfaces of the rotating discs are processed into inclined planes having a slope in the circumferential direction; the deflection calibration unit is used for calibrating a laser type high-speed deflection tester according to measured and theoretical deflection values; laser emitted by a Laser-Doppler vibrometer is incident on the upper surfaces of the rotating discs to obtain the measured deflection value; the deflection calibration unit calculates the theoretical deflection value according to the inclination angle and the rotational angular velocity of each rotating disc and the distance between a laser incident point and the gyration center of each rotating disc.
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公开(公告)号：US20240241085A1
公开(公告)日：2024-07-18
申请号：US18222669
申请日：2023-07-17
Applicant: SAMSUNG MEDISON CO., LTD.
Inventor： Min Soo Na , Yong Cheol Hyeon
IPC: G01N29/30
CPC classification number: G01N29/30
Abstract: Provided is an ultrasound device comprising, ultrasonic probes, a transceiver configured to deliver transmission signals to the ultrasonic probes and receive reception signals from the ultrasonic probes, channels configured to deliver the transmission signals and the reception signals, a relay unit configured to select a target ultrasonic probe connected to the channels among the ultrasonic probes, a controller configured to generate a test input signal and a selection signal, and a signal output unit configured to select a target channel among the channels based on the selection signal and output the test input signal to the target channel.
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公开(公告)号：US20240167982A1
公开(公告)日：2024-05-23
申请号：US18474985
申请日：2023-09-26
Inventor： Junjiao ZHANG , Yongna SHEN , Gongtian SHEN , Zhiquan WANG , Daqing CHEN
Abstract: An apparatus and method for testing sensitivity consistency of an acoustic emission sensor are provided. The apparatus uses a cylindrical polymethyl methacrylate (PMMA) rod as a test bench. A clamping seat, a clamping block, and a mounting cylinder are mounted on one end of the test bench in cooperation. Under an action of a pressure spring, an end face of a tested sensor keeps pressure-stable coupling contact with an end face of the test bench. A bracket is mounted on another end face of the test bench, and keeps, together with a fixing seat and the clamping seat, the test bench horizontally placed on a desktop. By adjusting a width and an amplitude of a pulse excitation signal of a signal generator, and according to sensitivity distribution and aggregation between tested sensors, a consistency calculation method is used to screen out tested sensors with first, second, and third sensitivity consistency.
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公开(公告)号：US11953640B2
公开(公告)日：2024-04-09
申请号：US17607010
申请日：2020-04-21
Applicant: TUBITAK
Inventor： Alper Biber , Oleksandr Golyk , Ata Can Çorakçi
Abstract: The present invention is a pressure coupling chamber (1) developed for comparison calibrations of acoustic pressure-sensitive hydrophone (2) in the frequency range from Hz to 1 kHz. A hydrophone (2), reference receiver unit (3) and acoustic source (6) under test are acoustically coupled in the chamber through the air-filled medium inside the pressure coupling chamber (1). Acoustic sources (6) that are going to create acoustic pressure in the pressure coupling chamber (1), placed on the side walls of the chamber (1) to surround the pressure-sensitive active surface of hydrophone (2), are driven to create a hydrostatic pressure effect in the related frequency range in the chamber. Calibration of tested hydrophone (2) with comparison method is carried out by measuring the output voltages of tested hydrophone (2) and the reference receiver unit (3).
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Patent Agency Ranking
公开(公告)号：US20240077457A1
公开(公告)日：2024-03-07
申请号：US18115356
申请日：2023-02-28
Applicant: SHANXI UNIVERSITY
Inventor： Kuanshou ZHANG , Zheng Song , Yuanji Li , Jinxia Feng
CPC classification number: G01N29/2418 , G01J3/4535 , G01N29/30 , A61B5/0095
Abstract: The present disclosure belongs to the field of photoacoustic signal detection, and specifically relates to a quantum-enhanced all-optical photoacoustic signal detection device and method. The problem of low sensitivity of photoacoustic signals based on interference measurement is solved, and high-sensitivity detection of photoacoustic signals generated by living organisms including human bodies can be achieved. A degenerate optical parametric oscillator based on a first-type phase matching crystals is used for preparing a vacuum squeezed state light field, a coherent control technology is used for locking the squeezed angle to obtain the quadrature phase vacuum squeezed state, the prepared quadrature phase vacuum squeezed state light field is injected into the vacuum channel of a Michelson interferometer, and a balanced homodyne detection mode is used for achieving detection of the quantum-enhanced photoacoustic signals.
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公开(公告)号：US20230194477A1
公开(公告)日：2023-06-22
申请号：US18080510
申请日：2022-12-13
Applicant: EBARA CORPORATION
Inventor： Yuta SUZUKI , Taro TAKAHASHI
CPC classification number: G01N29/12 , G01H1/06 , G01N29/30 , B24B37/34 , B24B49/003
Abstract: A method in which an acoustic sensor disposed in a polishing apparatus can be accurately calibrated is disclosed. In this method, polishing sounds of a substrate are acquired using an acoustic sensor; and then at least two distinctive sounds, having distinctive frequencies respectively, are selected from the acquired polishing sounds. Further, the at least two distinctive sounds are output from a sound source coupled to any of a polishing table, the acoustic sensor, and a substrate holder to cause the at least two distinctive sounds to be input to the acoustic sensor. Next, output values of the acoustic sensor are calibrated, such that the output values of the acoustic sensor relative to the at least two distinctive sounds come within an allowable range.
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公开(公告)号：US20180231508A1
公开(公告)日：2018-08-16
申请号：US15429700
申请日：2017-02-10
Applicant: Benoit Lepage
Inventor： Benoit Lepage
CPC classification number: G01N29/30 , G01N29/043 , G01N29/262 , G01N29/4427
Abstract: Disclosed is a beam overlap verification system and method for phased array ultrasonic inspection. A scan plan for the ultrasonic inspection defines a suitable probe, wedge and calibration block having machined defects for the geometry to be inspected, and makes a beam definition which defines a set of ultrasonic beams emitted by the phased array. An intersection amplitude unit records the response amplitudes from each defect at predetermined intersection points of adjacent beam pairs as the probe and wedge are manually scanned across the calibration block. An overlap verification module determines the −6 dB overlap of all adjacent beam pairs which are relevant to the geometry to be inspected, and verifies that the beam overlap conforms to the required coverage according to the ASME or other relevant codes. In this way, coverage is experimentally verified during calibration prior to inspection of a known geometry, such as a weld.
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9.发明申请公开(公告)号：US20180172645A1
公开(公告)日：2018-06-21
申请号：US15384617
申请日：2016-12-20
Applicant: THE BOEING COMPANY
Inventor： SADIE LEE FIENI , JAMES C. KENNEDY , JESSICA OFFUTT , DANIEL JOHNSON , KRISTOFER LOGAN PETERSON
IPC: G01N29/30
CPC classification number: G01N29/30 , B29C70/30 , G01N21/93 , G01N2021/8472
Abstract: Methods, systems and components made according to the methods and systems, are disclosed relating to making inspection reference standards for the non-invasive inspection of composite materials.
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10.发明授权公开(公告)号：US09964525B2
公开(公告)日：2018-05-08
申请号：US14654528
申请日：2013-12-17
Applicant: AIRBUS SAS
Inventor： Stéphane Auffray , Hubert Voillaume
CPC classification number: G01N29/30 , G01N29/11 , G01N29/4436 , G01N2291/0231 , G01N2291/106
Abstract: A monitoring system comprising ultrasound sensors to monitor the structure of a composite material part during production is automatically calibrated using reference sensors mounted on reference blocks and placed in the production environment of the part. The automatic calibration comprises actuating a reference sensor to transmit an ultrasonic wave and measuring the amplitude of a reference echo constituted by the transmitted ultrasonic wave after it has passed through the reference block. The measured amplitude is compared to a set point value and the gain is applied to the reference sensor to obtain an amplitude value of the reference echo substantially equal to the set point value. The gain applied to the reference sensor is applied to the ultrasound sensors of the same type as the reference sensor. The operation is performed for each reference sensor, and successively for all of the stages of production of the part.
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