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公开(公告)号:US11940416B2
公开(公告)日:2024-03-26
申请号:US16093285
申请日:2017-04-13
发明人: Hamed Sadeghian Marnani , Maarten Hubertus van Es , Paul Louis Maria Joseph van Neer , Rutger Meijer Timmerman Thijssen
CPC分类号: G01N29/0681 , G01N29/2406 , G01N29/2418 , G01N29/346 , G01N29/4436 , G01Q60/32 , G01Q60/34
摘要: The present invention relates to a heterodyne scanning probe microscopy method for imaging structures on or below the surface of a sample, the method including applying, using a transducer, an acoustic input signal to the sample sensing, using a probe including a probe tip in contact with the surface, an acoustic output signal, wherein the acoustic output signal is representative of acoustic surface waves induced by the acoustic input signal wherein the acoustic input signal comprises at least a first signal component having a frequency above 1 gigahertz, and wherein for detecting of the acoustic output signal the method comprises a step of applying a further acoustic input signal to at least one of the probe or the sample for obtaining a mixed acoustic signal, the further acoustic input signal including at least a second signal component having a frequency above 1 gigahertz, wherein the mixed acoustic signal comprises a third signal component having a frequency equal to a difference between the first frequency and the second frequency, wherein the frequency of the third signal component is below 1 gigahertz.
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公开(公告)号:US11874254B2
公开(公告)日:2024-01-16
申请号:US17092346
申请日:2020-11-09
申请人: ABB Schweiz AG
发明人: Miklos Lenner , Frank Kassubek , Stefano Marano , Gerrit Held
CPC分类号: G01N29/041 , G01N29/07 , G01N29/11 , G01N29/28 , G01N29/30 , G01N29/4427 , G01N29/4436 , G01N29/4463 , G01N29/46 , G01N2291/044
摘要: A signal processing unit configured to: cause a first ultrasound emitter, when attached to a wall of a vessel, to emit a first ultrasound test signal; receive, from at least one ultrasound receiver, when attached to the wall of the vessel, the first ultrasound test signal; detect a time of flight of the received first ultrasound test signal; and determine that an acoustic coupling of the first ultrasound emitter and a first ultrasound receiver of the at least one ultrasound receiver to the wall of the vessel is intact if the detected time of flight corresponds to a length of a path in the wall of the vessel from the first ultrasound emitter to the at least one ultrasound receiver.
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公开(公告)号:US11841307B2
公开(公告)日:2023-12-12
申请号:US16348790
申请日:2017-11-09
发明人: Igor Paprotny
IPC分类号: G01N15/06 , G01N1/40 , G01N29/02 , G01N29/036 , G01N21/17 , G01N29/44 , H01J49/26 , G01N15/02 , G01N15/00 , G01H11/08 , G01N5/02
CPC分类号: G01N15/0606 , G01N1/4005 , G01N15/0255 , G01N21/17 , G01N29/022 , G01N29/036 , G01N29/4436 , H01J49/26 , G01H11/08 , G01N5/02 , G01N2015/0046 , G01N2291/0215 , G01N2291/02408
摘要: Microfabricated PM sensors measure concentrations of particulate matter (PM) in air. Some sensors improve the accuracy of measurements by accounting for the effect of ambient conditions (e.g., temperature or humidity) on mass-sensitive elements employed to determine a mass of the PM in a stream of air. Some sensors improve the accuracy of measurements by controlling humidity in the stream of air measured by mass-sensitive elements. Some sensors employ a plurality of mass-sensitive elements to extend the useful life of the PM sensor. Some sensors employ one or more mass-sensitive elements and heating elements to cause deposition and allow measurement of different sizes of PM. Some sensors can measure mass concentration of coarse PM in addition to fine PM in a stream of air. Some sensors control the flow rate of a stream of air measured by mass-sensitive elements. Some sensors include features to mitigate electromagnetic interference or electromagnetic signal loss.
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公开(公告)号:US20230358619A1
公开(公告)日:2023-11-09
申请号:US17786029
申请日:2020-12-11
发明人: Peter KALKERT
IPC分类号: G01K11/24 , G01K13/024 , G01N29/024 , G01N29/22 , G01N29/24 , G01N29/32 , G01N29/44 , G01N29/34
CPC分类号: G01K11/24 , G01K13/024 , G01N29/024 , G01N29/221 , G01N29/2437 , G01N29/326 , G01N29/223 , G01N29/4436 , G01N29/343 , G01N2291/02881 , G01N2291/011
摘要: The invention relates to a device (1) at least for an acoustic temperature measurement in a gaseous medium (M) passing a medium channel (110) by means of runtime measurement of an acoustic pulse (AP) running through the gaseous medium (M) from at least a first transmitter arrangement (TA1) to at least a first receiver arrangement (RA1), the first transmitter arrangement (TA1) comprising a sound pulse generator (2) for the generating the acoustic pulse (AP), which is connected by a first acoustic channel (3) to a transmitter (4) which transmits the acoustic pulse (AP) into the medium (M), the first acoustic channel (3) being of acoustically dispersive design, and, the first receiver arrangement (RA1) comprising a receiver (5) for receiving the acoustic pulse (AP) after it has passed through the medium (M) and for transmitting it via a second acoustic channel (6) to a first microphone (7), preferably a piezoelectric microphone (7), for detecting the acoustic pulse (AP), the first acoustic channel (3) being curved towards the sound pulse generator (2) in such a way that the radiant heat of the medium (M) on the sound pulse generator (2) is at least greatly reduced, wherein at least the transmitter (4) comprises in the first acoustic channel (3) on its side (41) facing the medium (M) to be measured interfering element (42) which reflects a part (RI) of the acoustic pulse (AP) back into the first acoustic channel (3) of the first transmitter arrangement (TA1), in which a second microphone (8), preferably arranged on the side (43) of the transmitter (4) feeing the sound pulse generator (2), is arranged for detecting the back-reflected part (RI) of the acoustic pulse (AP), the device (1) further comprising a pulse discriminator (9) designed to determine the arrival times (AT) of the recorded acoustic pulses (AP) in a suitable way and to transmit them to an evaluation unit (10) designed to determine the temperature of the medium (M) from the runtime of the acoustic pulse (AP) from the transmitter (4) to the receiver (5), taking into account the arrival times (AT) determined by the pulse discriminator and the acoustic pulses (RI, AI) detected by first and second microphones (7,8).
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公开(公告)号:US20230355099A1
公开(公告)日:2023-11-09
申请号:US18314383
申请日:2023-05-09
申请人: ILLUMISONICS INC.
CPC分类号: A61B5/0066 , G01B9/02091 , A61B5/0035 , G01N29/2418 , G01N21/1702 , A61B5/0071 , G01N21/6486 , G01N21/6456 , G01N29/4436 , G01N2291/02475 , A61B5/0095 , A61B5/01
摘要: A method for visualizing details in a sample including directing an excitation beam to an excitation location below a surface of the sample, to generate signals in the sample; directing an interrogation beam toward the excitation location of the sample; directing a signal enhancement beam to the sample, to raise a temperature of a portion of the sample by 5 Kelvin or less, compared to a temperature of the portion of the sample in absence of the signal enhancement beam; detecting a portion of the interrogation beam returning from the sample that is indicative of the generated signals.
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公开(公告)号:US11796512B2
公开(公告)日:2023-10-24
申请号:US18309932
申请日:2023-05-01
发明人: Muhammad Saleem
CPC分类号: G01N29/07 , G01N29/045 , G01N29/4436 , G01N29/4481 , G01N2291/011 , G01N2291/0232 , G01N2291/2626
摘要: A system for non-destructive testing of a bond condition of concrete beams reinforced by steel rods is described. The system includes a transducing transmitter, a transducing receiver, and an ultrasonic pulse generator configured to generate drive signals for the transducing transmitter and receive a plurality vibrational waves at the transducing receiver. The system further includes a computing device including a measurement circuit configured to record a transit time for each vibrational wave and divide a distance between the transducing transmitter and the transducing receiver by the transit time to determine a pulse velocity of each vibrational wave, a comparison circuit configured to identify a highest pulse velocity of the vibrational waves and compare each highest pulse velocity to a first reference pulse velocity, and a decision circuit including an artificial neural network configured to identify a compromised bond condition around a steel rod.
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公开(公告)号:US11686832B2
公开(公告)日:2023-06-27
申请号:US17305405
申请日:2021-07-07
发明人: François Baque
CPC分类号: G01S7/539 , G01N29/4436 , G01S15/10 , G01S15/50
摘要: An ultrasonic target, including a main reflector, the main reflector including three main faces, extending from a main vertex, the main faces forming a main trirectangular trihedron; defining a main base plane, lying facing the main vertex, and forming a base of the main trirectangular trihedron; the target including at least one auxiliary reflector fastened to the main reflector, the or each auxiliary reflector including three auxiliary faces, extending from an auxiliary vertex, the auxiliary faces forming an auxiliary trirectangular trihedron; defining an auxiliary base plane, lying facing the auxiliary vertex, and forming a base of the auxiliary trirectangular trihedron.
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公开(公告)号:US20190207274A1
公开(公告)日:2019-07-04
申请号:US16312241
申请日:2017-06-21
发明人: Purim LADPLI , Fu-Kuo CHANG
CPC分类号: H01M10/48 , G01N29/07 , G01N29/11 , G01N29/4436 , G01N29/46 , G01N2291/011 , G01N2291/015 , G01N2291/0258 , G01N2291/0425 , G01N2291/102 , G01N2291/2697 , H01M10/425 , H01M2010/4271 , H01M2010/4278
摘要: A method of battery state monitoring includes: (1) providing a battery cell and at least one ultrasonic actuator and at least one ultrasonic sensor mounted to the battery cell; (2) using the ultrasonic actuator, generating a guided wave that propagates in-plane of the battery cell; (3) using the ultrasonic sensor, receiving an arriving wave corresponding to the guided wave; and (4) determining a state of the battery cell based on the arriving wave.
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公开(公告)号:US20180348170A1
公开(公告)日:2018-12-06
申请号:US15994528
申请日:2018-05-31
CPC分类号: G01N29/262 , G01N29/043 , G01N29/069 , G01N29/07 , G01N29/4436 , G01N29/4463 , G01N2291/011 , G01N2291/044 , G01N2291/106
摘要: Disclosed is a system and method of determining the test surface profile and compensating the gain amplitude when using time reversal focal laws in ultrasound non-destructive testing. Computer simulations are used to compute the diffraction field at time of incidence of the transmitted parallel wave front on the test surface. Knowledge of the surface profile and the diffraction field allows determination of coverage at the test surface and improved accuracy of flaw sizing.
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公开(公告)号:US20180292255A1
公开(公告)日:2018-10-11
申请号:US15483644
申请日:2017-04-10
CPC分类号: G01H1/003 , G01H3/04 , G01M7/00 , G01M13/028 , G01M13/045 , G01N29/14 , G01N29/4436 , G01N29/46 , H02P6/10 , H02P23/12 , H02P23/14
摘要: An improved system and method for analyzing motor performance to detect vibration of an electric machine controlled by a motor drive is disclosed. A load observer determines an estimated torque present as a load on the motor as a function of input signals corresponding to a desired torque to be generated by the motor and to a measured angular position of the motor during operation. The motor drive determines a frequency response of the estimated torque to identify at what magnitude and frequency any vibration components are present within the estimated torque signal. The motor drive compares the frequency response of the estimated torque signal to set points. If the measured magnitude of vibration at a particular frequency, as seen in the frequency response, exceeds a threshold set in one of the set points for that frequency, the motor drive generates an output signal indicating an excessive vibration is present.
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