Measuring Or Testing System Having Threshold, Gating, Delay, Or Blocking Means Patents (Class 73/609)
  • Patent number: 11366229
    Abstract: A method of finding a range to a target object includes extracting a signal component from a beat signal obtained by synthesizing a transmission wave irradiated onto the target object and a reflection wave reflected and received from the target object, generating a matching evaluation value of a plurality of image data of the target object captured by an imaging device, fusing the signal component and the matching evaluation value before generating a distance image from the matching evaluation value, and setting distance information for each pixel of the image data of the target object based on the signal component and the matching evaluation value fused together to generate a distance image.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: June 21, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroyoshi Sekiguchi, Hidetaka Miyajima, Shigeru Ouchida
  • Patent number: 11287299
    Abstract: Techniques are disclosed for configuring a bi-material enclosure for an acoustic sensor assembly, such as for use in a water or gas metering applications, or other applications using piezo and/or transducer devices. A plastic housing with mechanical reinforcements (e.g., 40% glass fiber) provides the advantage of strength and resistance to a high-pressure environment encountered during use. Use of a plastic sleeve having less or no reinforcements provides more consistent signal reception and data generation between different transducer assemblies under the same or similar conditions. Accordingly, the bi-material transducer enclosure provides a high resistance to pressure and/or high reproducibility of signal-transmission characteristics between transducer assemblies.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: March 29, 2022
    Assignee: Itron Global SARL
    Inventors: Abbas Sabraoui, Michel Bottner, Stephane Vago, Gregory Pastor
  • Patent number: 11226301
    Abstract: A thermographic examination device for non-destructive examination of a near-surface structure at a test object includes a heating device for applying heat energy to a surface region to be heated of the test object; a thermal sensor device for detecting a time profile, following the application of heat energy, of a spatial temperature distribution on a surface region to be measured of the test object, the surface region to be measured including the surface region to be heated as well as an outer surface region to be measured which is adjacent to the surface region to be heated; and an evaluator for evaluating the time profile of the spatial temperature distribution so as to detect at least one parameter of the near-surface structure at the surface region to be measured.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: January 18, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventor: Jens Doege
  • Patent number: 10921289
    Abstract: The present invention relates to an ultrasonic nonlinearity measuring method generated by a high voltage pulser and more specifically, includes a calibration step of transmitting and receiving an ultrasonic signal to and from an object to be inspected having a reception probe attached thereto, by a receiving unit; a harmonic wave measuring step of transmitting a tone burst signal to an object to be inspected having a transmission/reception probe attached thereto and receiving the tone burst signal which passes through the object to be inspected, by the receiving unit; a harmonic wave measuring step of transmitting a tone burst signal to an object to be inspected having a transmission probe attached thereto and receiving the transmitted tone burst signal, by a transmitting unit; a calibration step of transmitting and receiving an ultrasonic signal to and from an object to be inspected having a transmission probe attached thereto, by the transmitting unit; and a step of measuring an ultrasonic nonlinearity of t
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: February 16, 2021
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventors: Kyung Young Jhang, Jong Beom Kim
  • Patent number: 10852277
    Abstract: 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).
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: December 1, 2020
    Assignee: ETEGENT TECHNOLOGIES, LTD.
    Inventors: Oleg Lobkis, Richard A. Roth, Christopher G. Larsen, Stuart J. Shelley
  • Patent number: 10695035
    Abstract: Systems, apparatuses, methods, and non-transitory computer-readable media for assessing signal quality of a signal are described herein, including determining a signal quality assessment (SQA) metric of the signal based on at least one energy function of the signal, determining whether the SQA metric is above a threshold, and in response to determining that the SQA metric is above the threshold, performing additional signal processing of the signal.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: June 30, 2020
    Assignee: Neural Analytics, Inc.
    Inventors: Michael O'Brien, Mina Ranjbaran, Robert Hamilton, Samuel G. Thorpe, Nicolas Canac
  • Patent number: 10401522
    Abstract: Systems, methods, and devices for evaluating proper cement installation in a well are provided. In one example, a method includes receiving acoustic cement evaluation data parameterized using a first parameterization. A subset of the acoustic cement evaluation data is compared to expected nominal values of the acoustic cement evaluation data. When the subset of the acoustic cement evaluation data does not substantially conform to the expected nominal values of the acoustic cement evaluation data, all or part of the acoustic cement evaluation data is corrected to cause the subset of the acoustic cement evaluation data to more closely match the expected nominal values of the acoustic cement evaluation data. The corrected acoustic cement evaluation data may be used to estimate a presence of solids, liquids, and/or gases behind the casing.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: September 3, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Robert van Kuijk, Ram Sunder Kalyanaraman
  • Patent number: 10365249
    Abstract: A manufacturing method is used for an outer joint member of a constant velocity universal joint. The outer joint member includes a cup section having track grooves formed in its inner periphery, which are engageable with torque transmitting elements, and a shaft section formed at a bottom portion of the cup section. The manufacturing method includes welding the cup and shaft members by irradiating a beam to joining end portions of the cup and shaft members, causing an outer surface including the welded portion to be formed into a flat smooth surface by removal processing, irradiating ultrasonic waves to the flat smooth surface with one probe at an incident angle which prevents total reflection in a circumferential angle beam flaw detection method, and setting a focal point of the ultrasonic waves to positions from a surface to an inside of the welded portion, to thereby perform inspection.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: July 30, 2019
    Assignee: NTN CORPORATION
    Inventors: Hiromi Nagai, Tsuneaki Hiraoka
  • Patent number: 10365253
    Abstract: A manufacturing method is used for an outer joint member of a constant velocity universal joint. The outer joint member includes a cup section having track grooves formed in an inner periphery of the cup section, which are engageable with torque transmitting elements, and a shaft section formed at a bottom portion of the cup section. The outer joint member is constructed by forming the cup section and the shaft section as separate members, and by welding a cup member forming the cup section and a shaft member forming the shaft section to each other. The manufacturing method at least includes welding the cup member and the shaft member by irradiating a beam to joining end portions of the cup member and the shaft member, and inspecting a welded portion formed in the welding by a plurality of ultrasonic flaw detection methods with one probe.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: July 30, 2019
    Assignee: NTN CORPORATION
    Inventors: Hiromi Nagai, Yasuhiko Sakakibara
  • Patent number: 10349921
    Abstract: Systems and methods for relaying electrical signals representing acoustic response of a volume of tissue to light and ultrasound stimulation. In an embodiment, a plurality of ultrasound transducers receive acoustic energy from the volume and generate electrical energy, which is transmitted via an electrical path to a relay system. The ultrasound transducers are operated at a wide band frequency of at least 1 MHz to 5 MHz to receive acoustic energy from the volume of tissue responsive to light stimulation and at a narrower band frequency to receive acoustic energy from the volume of tissue responsive to acoustic stimulation. The relay system relays the electrical signals to an optoacoustic system or an ultrasound instrument for further processing depending on whether the electrical signals resulted from ultrasound or light stimulation. In an embodiment, optoacoustic, ultrasound, or other images are generated from the electrical signals and may be coregistered, overlayed, or displayed.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 16, 2019
    Assignee: Seno Medical Instruments, Inc.
    Inventors: Donald G. Herzog, Gregory Schmid, Bryan Clingman, Jason Zalev, William Ackerman
  • Patent number: 10247704
    Abstract: A change in a surface of a wall is detected by transmitting a pulse of input ultrasonic vibrations into a proximal surface of the wall and then receiving ultrasonic vibrations from that proximal surface. The received ultrasonic vibrations are compared with a previously detected pulse of output ultrasonic vibrations that have been received from the proximal surface in order to identify, for example, a time of arrival of a current pulse of output ultrasonic vibrations. The time of arrival of this current pulse of output of ultrasonic vibrations may be used to detect a change in the surface of the wall, such as a change in the thickness of the wall. Other embodiments can detect a change in the roughness profile of the wall using changes in the received ultrasonic vibrations other than arrival time.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: April 2, 2019
    Assignee: PERMASENSE LIMITED
    Inventors: Frederic Bert Cegla, Attila Gajdacsi
  • Patent number: 10215734
    Abstract: The application relates to a method for testing a workpiece using ultrasound in a curved region of the surface of said workpiece, having the following steps: a plurality of ultrasonic signals are emitted from a plurality of transmitting positions into the workpiece a corresponding ultrasonic echo signal is received for each ultrasonic signal the ultrasonic echoes having amplitudes representing local maxima are determined for each transmitting position if an individual ultrasonic echo having an amplitude representing a local maximum was determined for a transmitting position in, the associated ultrasonic echo signal of said echo is selected if a plurality of ultrasonic echoes having an amplitude representing a local maximum were determined for a transmitting position, ultrasonic echo signals are selected if only an individual ultrasonic echo having an amplitude representing a local maximum was determined for an adjacent transmitting position at least the selected ultrasonic echo signals are evaluated.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: February 26, 2019
    Assignee: AREVA GMBH
    Inventors: Felix Köber, Kerstin Scholz, Edgar Zaus
  • Patent number: 10107902
    Abstract: A ranging function is implemented using a collection of core independent peripherals (CIPs) in a microcontroller without software overhead to the central processor during operation thereof. A pulse width modulation (PWM) peripheral generates a high frequency drive signal, a counter to set the duration of the PWM drive signal (pulse), and a second timer coupled to a comparator to measure the time it takes to receive back a reflection of the ranging signal from an object. The ranging peripheral starts ranging with ultrasonic pulses, and when corresponding reflected ultrasonic pulse are receives an interrupt signal is provided when the ranging measurement is complete. Time dependent sensitivity and/or gain adjustments are contemplated. The ultrasonic ranging peripheral uses on chip resources for most of its functions and therefore requires very few external components. It's set and forget nature may be based on CIP based timers, signal generators and configurable logic cells.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: October 23, 2018
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Keith Curtis, Anthony Stram, Kristine Angelica Sumague
  • Patent number: 10073065
    Abstract: The invention relates to a continuous monitoring system which will monitor the pipes without the need of shutting down of the plants. The major issues in designing such a system using magnetostriction as per prior art is the loss of magnetization of the permanent magnets used to provide the magnetic bias and also the disbonding of interfaced adhesives with which the magnetostrictive ribbons are bonded at high temperatures. The invention identifies a novel sensor which can be taken up to high temperatures without any loss of signal strength, this is achieved by generating guided waves using a special amorphous magnetostrictive ribbons. L(0, 2) mode waves are generated using these ribbons to monitor pipes working at high temperatures as per the invention.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: September 11, 2018
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Krishnan Balasubramaniam, Tarun Kumar Mishra
  • Patent number: 10034611
    Abstract: A subject information obtaining apparatus and a subject information obtaining method are provided with which a resolution of a photoacoustic image can be improved even when an absorber arranged at a particular position with respect to a detector for photoacoustic waves is used. The subject information obtaining apparatus is configured to obtain an optical characteristic value distribution of a subject by using photoacoustic waves. A signal processing apparatus constituting this subject information obtaining apparatus executes generating a correction table on the basis of a variation quantity of a signal intensity related to a signal from an ultrasonic wave detector and processing a signal from a photoacoustic wave detector by using a value of the correction table.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: July 31, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Abe
  • Patent number: 9962796
    Abstract: A method and device for location of pipes is disclosed. The method can comprise mounting one or more centering tools, each having a reflector to a first pipe such that the reflectors are either aligned with, or can be used to determine the location of the center of the first pipe and mounting one or more centering tools, each having a reflector to a second pipe such that the reflectors are either aligned with, or can be used to determine the location of the center of the second pipe. The method can further comprise determining a first distance between the center of the first pipe and a light emitting source at an observation point disposed between the first pipe and the second pipe and determining a second distance between the center of the second pipe and the light emitting source at the observation point.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 8, 2018
    Assignee: Data Point Targets LLC
    Inventor: Toby Flaucher
  • Patent number: 9594062
    Abstract: A system and method for testing an acoustic probe having a series of transducer elements adapted to convert between acoustic and electrical signals is provided. The system comprises an acoustic signal generator and a receiver. The acoustic signal generator sends an acoustic signal into at least one of the series of transducer elements of the acoustic probe. An electrical transducer signal generated in response to receipt of the acoustic signal at the selected transducer element. The receiver has a switch to receive the electrical transducer signal from each selected transducer element of the acoustic probe. A display provides an illustration indicative of an operative ability of the selected transducer element of the acoustic probe to convert between acoustic and electrical signals.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 14, 2017
    Assignee: General Electric Company
    Inventor: James Ginther
  • Patent number: 9535040
    Abstract: The invention relates to a method for testing connections of metal workpieces to plastic compounds for cavities by means of ultrasound, wherein the plastic compound is arranged between the workpiece as an intermediate layer or is connected to the workpiece on one side and the cavity is located within the plastic compound, wherein the cavity is connected to the workpiece by means of a remaining plastic layer or plastic skin and wherein the plastic compound is exposed to ultrasonic signals of a certain test frequency and pulse length from the metal side of the workpiece by means of at least one ultrasonic probe, and in particular the ultrasonic signals reflected by flaws in the plastic compound are detected by the same or another ultrasonic probe and converted into electrical signals that can be evaluated and subjected to a threshold observation. The test frequency of the ultrasonic signals is set in a range of 1 to 10 MHz so that the attenuation of the sound is minimal after passing through the plastic skin.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: January 3, 2017
    Assignee: SALZGITTER MANNESMANN LINE PIPE GMBH
    Inventors: Michael Kaack, Christian Kremer, Jörn Winkels, Holger Brauer
  • Patent number: 9533176
    Abstract: A device for treating tissue comprises an enlongate probe and a light delivery unit illuminating a target area with light within a first wavelength band selected to enhance identification of target tissue in combination with an ultrasound crystal mounted at a distal end of the probe, the crystal being stimulated to treat target tissue identified using the light delivery unit.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: January 3, 2017
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Isaac Ostrovsky, Jon T. McIntyre, Ty Fairneny, Victor Shukhat, Michael Madden
  • Patent number: 9536524
    Abstract: Speech recognition models are dynamically re-configurable based on user information, background information such as background noise and transducer information such as transducer response characteristics to provide users with alternate input modes to keyboard text entry. The techniques of dynamic re-configurable speech recognition provide for deployment of speech recognition on small devices such as mobile phones and personal digital assistants as well environments such as office, home or vehicle while maintaining the accuracy of the speech recognition.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: January 3, 2017
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Richard C. Rose, Bojana Gajic
  • Patent number: 9519053
    Abstract: A distance measuring apparatus and a distance measuring method are provided. The distance measuring apparatus includes a GPS module, an ultrasound transceiver module and a control module. The GPS module is configured to generate a pulse signal. The ultrasound transceiver module is configured to generate and transmit a first ultrasound signal and receive a second ultrasound signal transmitted from an object. When the control module receives the pulse signal, the control module controls the ultrasound transceiver module to generate and transmit the first ultrasound signal, and determines whether the ultrasound transceiver module receives the second ultrasound signal within a first interval. When the ultrasound transceiver module receives the second ultrasound signal within the first interval, the control module determines a distance between the distance measuring apparatus and the object according to a time difference.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 13, 2016
    Assignee: JOY TECHNOLOGY(SHEN ZHEN)CO., LTD
    Inventor: Yu-Zheng Zheng
  • Patent number: 9279785
    Abstract: A coupling wedge for use with a ultrasonic phased array inspection system has a body with a bottom side configured to face the object to be tested and a front side generally oriented at an angle to the bottom side and a top side to be coupled with a phased array probe. The probe includes a plurality of apertures. The front side of the wedge has grooves formed with a plurality of reflectors that are positioned on the front side of the wedge, leaving a distance from the bottom side. The change in TOF values from the reflector to a specific aperture enable the determination of the temperature change in the wedge. An alarm to an operator or alternation of focal laws in the system for temperature compensation can be applied.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: March 8, 2016
    Assignee: OLYMPUS NDT
    Inventor: Jinchi Zhang
  • Patent number: 9271697
    Abstract: Described herein are systems and methods for suppressing speckle noise in ultrasound imaging. In an embodiment, speckle noise suppression is provided by incoherently summing echo waves that impinge the active aperture of the transducers. This incoherent summation prevents echo waves from destructively interfering and therefore prevents the signal ‘nulls’ that characterize speckle noise. In an exemplary embodiment, the incoherent summation is performed by sub-dividing a transducer into a plurality of smaller transducers and incoherently summing the electrical signals from the smaller transducers. In one exemplary embodiment, each of the smaller transducers is coupled to a separate rectifier, which rectifies the electrical signal from the respective transducer into a rectified signal. The rectified signals from the rectifiers are then summed to provide the incoherent summation.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: March 1, 2016
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Tat-Jin Teo
  • Patent number: 9103905
    Abstract: This specification relates to an active SONAR system comprising a transmitter, a transducer and an impedance matching circuit for expanding bandwidth and increasing a power factor value in sound and ultrasonic wave bands by mutually matching resonant frequencies of the transducer and the impedance matching circuit or a resonant frequency between the transducer and the impedance matching circuit using an electrical equivalent model corresponding to actual impedance data of the transducer and controlling the positions and the intervals of the frequencies at which reactance components of the transducer including the impedance matching circuit become zero, and an impedance matching method thereof. This allows for efficient driving in a broadband between the transmitter and the transducer in the active SONAR system, contributing to output power performance and detection performance of the active SONAR system.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: August 11, 2015
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Jeong Min Lee, Byung Hwa Lee
  • Publication number: 20140345385
    Abstract: An acoustic wave detection probe includes a light projection section that emits measuring light to be projected onto a subject, an acoustic wave transducer disposed adjacent to the light projection section and capable of detecting an acoustic wave, an acoustic lens provided on a detection side of the acoustic wave transducer, and a housing accommodating the light projection section, the acoustic wave transducer, and the acoustic lens, in which the acoustic lens and a surface portion of the housing adjacent to the acoustic lens are formed to have an optical property in which the average diffuse reflection factor is 85% or more and the average absorption factor is 10% or less in a wavelength range of the measuring light.
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Inventors: Kaku IRISAWA, Katsuya YAMAMOTO
  • Patent number: 8534144
    Abstract: A system to measure the internal state of a bundle of tubes by injecting a signal into each tube of the bundle, receiving reflections from the tube due to anomalies within the tube, then analyzing the reflections to determine the type or characteristics about the anomalies. The analyzed information is stored in database to be used for statistical processing. Further, the device can be used in the performance of a cleaning process by conducting an initial assessment of the tubes in a bundle of tubes, comparing the stored data and estimating the number of cleaning cycles that will be required, and re-conducting the evaluation of the state of the tubes after every cleaning cycle or after every few cleaning cycles.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: September 17, 2013
    Assignee: AcousticEye Ltd
    Inventors: Noam Amir, Tal Pechter
  • Patent number: 8490463
    Abstract: A method is provided for calibrating ultrasonic signals passed through a crimp formed with respect to a deformable body via an ultrasonically-equipped crimp tool (UECT). The UECT verifies a crimp quality using the ultrasonic signals. The method includes forming the crimp, transmitting a first signal, e.g., a pulse, to a first transducer of the UECT, and converting the first signal, using the first transducer, into a second signal which defines an ultrasonic pulse. This pulse is transmitted through the UECT into the crimp. A second transducer converts the second signal into a third signal, which may be further conditioned, and the ultrasonic signals are calibrated using the third signal or its conditioned variant. An apparatus for calibrating the ultrasonic signals includes a pulse module (PM) electrically connected to the first and second transducers, and an oscilloscope or display electrically connected to the PM for analyzing an electrical output signal therefrom.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: July 23, 2013
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Daniel F. Perey, K. Elliott Cramer
  • Patent number: 8378816
    Abstract: Signal processing technology for assessing dynamic system similarity for fault detection and other applications is based on time- and frequency-domain time series analysis techniques and compares the entire autocorrelation structure of a test and reference signal series. The test and reference signals are first subjected to similar pre-processing to help guarantee signal stationarity. Pre-processing may include formation of multivariate signal clusters, filtering and sampling. Multivariate periodograms or autocovariance functions are then calculated for each signal series. Test statistics are computed and assessed to determine the equality of the test and reference signals. When the difference between sample autocovariance functions or periodograms of such signals exceeds a preselected threshold value, fault detection signals and/or related diagnostic information are provided as output to a user.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: February 19, 2013
    Assignee: Clemson University
    Inventors: John R. Wagner, Hany F. Bassily, Robert B. Lund
  • Patent number: 8342027
    Abstract: A method for determining a physical property of an object or fluid in a dynamic multi-path clutter environment comprises transmitting an RF interrogation signal to a wireless sensor physically coupled to the object or fluid (gas or liquid) in the dynamic multi-path clutter environment, wherein the wireless sensor is operable to receive the RF interrogation signal, produce a reference signal and a measurement signal, and retransmit the reference signal and the measurement signal in the dynamic multi-path clutter environment. The reference signal and measurement signal are delayed by the wireless sensor by an amount of time that may be a function of the unknown physical property. The method also comprises receiving the retransmitted reference signal and the retransmitted measurement signal and comparing them in the time domain in order to determine the unknown physical property of the object or fluid.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: January 1, 2013
    Assignees: The Ohio State University, Syntonics, LLC
    Inventors: Eric K. Walton, Yakup Bayram, Orbay Tuncay, Bruce G. Montgomery, Gary W. Bruce, Douglas E. Crowe, Steven E. Gemeny
  • Patent number: 8291744
    Abstract: The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: October 23, 2012
    Assignee: Materials and Sensors Technologies, Inc.
    Inventors: Borislav B. Djordjevic, Lawrence L. Rouch
  • Patent number: 8286488
    Abstract: An apparatus and system for measuring material thickness of a test object. In one embodiment, the apparatus can include a measurement probe that can have a plurality of transducer elements that can include transmitter elements and receiver elements arranged, respectively, in on a first side and a second side of a gap. The first side and the second side can form a scan area with at least one active group that can have at least one transmitter element and at least one receiver element, which can be separated from the transmitter element in a spaced relationship.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: October 16, 2012
    Assignee: General Electric Company
    Inventors: Paul Meyer, Jeffrey Anderson, Anand Desai, Wei Luo
  • Patent number: 8285498
    Abstract: The subject of the invention is a method for detection and automatic identification of defects in rolling bearings applicable in diagnosing rolling bearings and detecting damage in a very early stage of its occurrence. The inventive method in which the vibrations of a bearing in operation are measured, the measured analogue signals are converted to digital data which are filtered and next shock pulses are detected, whereupon defects present in the tested bearing or bearings are identified, characterized in that the detection of shock pulses is done using shock pulse likelihood ratio (Ms).
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: October 9, 2012
    Assignee: ABB Research Ltd.
    Inventors: Kari Saarinen, Jaroslaw Nowak
  • Patent number: 8096183
    Abstract: The present invention relates to a method for determining the height of objects disposed on a conveying device, in which an ultrasonic sensor positioned in a specific relationship to the conveying device repetitively transmits ultrasonic pulses directed toward the conveying device and any objects disposed thereon to be detected, wherein the ultrasonic pulses are then reflected from a surface of the conveying device or from surfaces of the objects to be detected and are detected by the ultrasonic sensor, wherein from the moments of transmission and moments of detection of the ultrasonic pulses, delay times of the ultrasonic pulses are determined and the height of an object surface relative to the surface of the conveying device is determined from the delay times of the ultrasonic pulses reflected from a surface of an object.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: January 17, 2012
    Assignee: PEPPERL + FUCHS GmbH
    Inventors: Thomas Knittel, Jens Scherer
  • Patent number: 8038621
    Abstract: An ultrasonic diagnostic apparatus includes plural ultrasonic transducers, a catheter signal detection unit and a position detection unit. The plural ultrasonic transducers are arrayed two-dimensionally for transmitting and receiving ultrasonic waves to and from an object. The catheter signal detection unit is configured to acquire a reception signal of a frequency modulated continuous wave from reception signals from at least three of the plural ultrasonic transducers. The frequency modulated continuous wave is transmitted from a catheter inserted in the object. The position detection unit is configured to detect a position of the catheter based on the acquired reception signal of the frequency modulated continuous wave.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: October 18, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tatsuro Baba, Hironobu Hongou
  • Patent number: 8001843
    Abstract: A circular arc wide beam transmission method includes setting parameters for a focusing circular arc and calculating a transmission delay for each of the array elements in a transmission aperture of a probe based on the parameters for the focusing circular arc. An ultrasonic imaging system controls each array element to transmit ultrasonic waves according to the transmission delay for that array element.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 23, 2011
    Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
    Inventors: Bin Yao, Qinjun Hu, Pengfei Yang, Bo Yang
  • Patent number: 7946176
    Abstract: Methods and apparatus for extracting the first arrival wave packet of an acoustic signal in a structural health monitoring (SHM) system include receiving an acoustic signal transmitted between two transducers thereof. Electromagnetic cross-talk is removed from the signal. Signal amplitude threshold values used for picking out the first arrival wave packet are chosen based on signal characteristics or chosen adaptively as the value that leads to the minimum variance of the group velocity estimates of all the actuation-sensing transducer pairs. The group velocity is estimated as the known actuator-sensor distance divided by the propagation time of the first wave packet of which the envelope exceeds a candidate threshold value. The first arrival wave packet is determined as the signal segment where the signal envelope first exceeds the chosen amplitude threshold and the segment length exceeds a specified threshold of time width.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: May 24, 2011
    Assignee: Acellent Technologies, Inc.
    Inventors: Bao Liu, Shawn J Beard
  • Patent number: 7895895
    Abstract: A computer implemented method, or hardware filtration apparatus, and computer usable program code for measuring porosity in materials. An ultrasonic signal is emitted from a transmitting transducer in an ultrasonic measurement system into a material. A response signal is received at a receiving transducer in the ultrasonic measurement system from the material. The response signal is filtered to pass only frequencies in the response signal within a selected frequency range to form a filtered response signal. A porosity level of the material is identified using the filtered response signal.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: March 1, 2011
    Assignee: The Boeing Company
    Inventors: Jeffrey R. Kollgaard, Carrie Ann Decker, Barry A. Fetzer, Kevin M. Uhl
  • Patent number: 7867166
    Abstract: In estimation of an aberration in propagation of an ultrasonic wave from an aperture through an aberration path, the aperture is modeled as a plurality of sources and receivers. The frequency-domain magnitude of the aberration is estimated by normalizing the scattered signal power spectrum. The frequency-domain phase of the aberration is estimated by a recursion using cross spectra of signals at neighboring receivers.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: January 11, 2011
    Assignee: University of Rochester
    Inventors: Robert C. Waag, Jeffrey P. Astheimer
  • Patent number: 7832275
    Abstract: An ultrasonic inspection system utilizes a tunable digital filter with 4× interpolation. The system is used for scanning objects to be tested and includes a transmit/receive device to generate a test signal and receive an echo signal. A signal processing circuit processes the echo signal with one or more digital to analog converters for converting an analog version of the echo signal to a digital echo signal in the form of streaming digital data which is stored in a memory. The data is stored at a first data rate and read out at the second, slower data rate. An averaging decimator receives and processes the data from the memory and supplies it to an IIR filter and subsequently to an FIR filter and ultimately to a box car filter to effect processing thereon which increases the perceived resolution of the data by a given factor, preferably by a factor of 4.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: November 16, 2010
    Assignee: Olympus NDT
    Inventors: Andrew Thomas, Steven Besser, Jason Toomey
  • Patent number: 7757558
    Abstract: A method and apparatus are provided to identify unacceptable levels of porosity, microcracking or defects attributable to thermal damage. Ultrasonic signals are introduced into the workpiece, such as by means of an ultrasonic transmitter. The ultrasonic signals propagate along a predefined axis of propagation oriented at an offset angle relative to a predefined reference direction oriented normal to the workpiece. Backscattered signals are received, such as by an ultrasonic receiver, from the workpiece. A measure representative of the cumulative energy of the backscattered signals received over a predefined time interval is then determined, such as integration performed by a processing element. An anomalous response may then be detected based upon the measure representative of the cumulative energy of the backscattered signals. This anomalous response may be representative of at least a predefined amount of porosity, microcracking or thermal damage.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: July 20, 2010
    Assignee: The Boeing Company
    Inventors: Richard H. Bossi, Robert L. Carlsen, Gary E. Georgeson
  • Patent number: 7757557
    Abstract: An ultrasonic inspection system utilizes a tunable digital filter with 4× interpolation. The system is used for scanning objects to be tested and includes a transmit/receive device to generate a test signal and receive an echo signal. A signal processing circuit processes the echo signal with one or more analog to digital converters for converting an analog version of the echo signal to a digital echo signal in the form of streaming digital data which is stored in a memory. The data is stored at a first data rate and read out at the second, slower data rate. An averaging decimator receives and processes the data from the memory and supplies it to an IIR filter and subsequently to an FIR filter and ultimately to a box car filter to effect processing thereon which increases the perceived resolution of the data by a given factor, preferably by a factor of 4.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: July 20, 2010
    Assignee: Olympus NDT
    Inventors: Andrew Thomas, Steven Besser, Jason Toomey
  • Patent number: 7753847
    Abstract: A method for measuring a mechanical property of a subject includes using an ultrasonic transducer to apply ultrasonic vibration pulses to a vibration origin in the subject in an on-off time sequence in order to impart a harmonic motion at a prescribed frequency to the subject, and when the vibration pulses are off, using the same transducer to apply ultrasonic detection pulses to a motion detection point and to receive echo signals therefrom in order to sense the harmonic motion on the subject at the motion detection point. From the harmonic signal information, a harmonic signal is detected and a characteristic such as amplitude or phase of the detected harmonic signal is measured. The mechanical property is calculated using the measured characteristic using for example a wave speed dispersion method.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: July 13, 2010
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: James Fowler Greenleaf, Shigao Chen, Yi Zheng
  • Patent number: 7690257
    Abstract: In a method and a device for testing a weld seam (8), located on the inner surface of a reactor pressure vessel (2), by which the outer circumference of an instrumentation nozzle (4) leading into the interior of this reactor pressure vessel (2) is welded onto the reactor pressure vessel (2), an ultrasound test probe (20) with a linear ultrasound transducer array (30) is inserted into the instrumentation nozzle (4), which ultrasound transducer array (30) is parallel to the central axis (12) of the instrumentation nozzle (4) in terms of its longitudinal direction, and is used to couple a transmitted ultrasound signal (S) into the instrumentation nozzle (4) in the region of the weld seam (8) and to receive a reflected ultrasound signal (R).
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: April 6, 2010
    Assignee: Intelligendt Systems & Services GmbH
    Inventors: Rainer Meier, Thomas Rehfeldt, Peter Kaluza
  • Patent number: 7681451
    Abstract: Disclosed herein is a passage detection apparatus capable of detecting a passage of an object in a specific space. The passage detection apparatus includes a transmitting device, a receiving device, and a shielding member. The transmitting device is provided with a vibration generating source. The receiving device is arranged at the position corresponding to the transmitting device across the specific space. The shielding member has a through-hole, and is arranged so as to be interposed between the transmitting device and the receiving device. The vibration transmitted from the transmitting device reaches the receiving device via the through-hole and a passage route of the object. On the other hand, the reception of the vibration, reflected in the specific space, by the receiving device is suppressed by the shielding member.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: March 23, 2010
    Assignee: NGK Insulators, Ltd.
    Inventors: Shuhei Fujita, Kunihiko Yoshioka, Takao Ohnishi
  • Patent number: 7632229
    Abstract: A system and method for range dependent weighting in ultrasound imaging. The system includes a transducer array, a data acquisition system, and an imaging processor. The transducer array receives a first ultrasound beam having a first focal depth. The data acquisition system receives a first ultrasound imaging signal from the array. The first signal includes first image data based on at least the first ultrasound beam. The imaging processor combines a first data contribution from the first image data with at least second image data from a second ultrasound imaging signal to create a spatially compounded image. The first data contribution is based on at least the focal depth of the first beam.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: December 15, 2009
    Assignee: General Electric Company
    Inventors: Michael Joseph Washburn, Feng Lin
  • Patent number: 7559240
    Abstract: Degradation of the lubricant due to contamination of the lubricant with wear particles or moisture, which greatly affects the service life of rolling bearings, can be detected in a cost-effective manner through the use of a resonance frequency band signal or high-frequency signal of an accelerometer, and the service life of a rolling bearing can be estimated with high precision at an early stage on the basis of the detected state of the wear particles and lubricant.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: July 14, 2009
    Assignees: Chugoku Electric Power Co., Inc.
    Inventors: Takuzo Iwatsubo, Isao Shiromaru, Makoto Tanaka, Yoshibobu Akamatsu, Hideko Nagayasu, legal representative, Shingo Boda, Yoji Nagayasu
  • Patent number: 7461554
    Abstract: In a non-destructive test instrument, there is provided a time variable gain (TVG) amplifier wherein the gain of the amplifier is dynamically changed to optimize the amplitude of a flaw echo signal. The TVG digital memory for a given TVG curve specifies and controls not only the start gain value, and the end game value, but the gain rate of change slope as well to generate TVG curve line segments.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: December 9, 2008
    Assignee: Olympus NDT
    Inventors: Andrew Thomas, Steven Besser
  • Patent number: 7210329
    Abstract: The invention relates to a method for determining the threshold value of screens which enable an evaluation of a sound coupling during the ultrasound testing of a series of spot welding joints of a selected type. Initially, a geometrical minimal thickness dMin is established for the spot welding joints. At least one echo of the front surface (entrance echo) is received in addition to one echo of the first reflection on a rear wall of the spot welding joint (first rear wall echo) and at least one further (n-th) rear wall echo. The propagation time tMin of the ultra sound pulse is defined for the path to the front surface to the rear wall and back to the front surface at a minimal thickness dMin and a propagation time tT for the total thickness. A first screen (B1) is set for the signal of the rear wall echo, starting at a moment in time t1S=tE+tMin?tSA and ending at a moment in time t1T=tE+tT+tSE, whereby tSA and tSE are additional small security measures.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: May 1, 2007
    Assignee: Agfa NDT GmbH
    Inventors: Paul Buschke, Bernd Kirchner
  • Patent number: 7046015
    Abstract: An ultrasonic distance measure includes: transmitting and receiving ultrasonic transducers with changeable resonant/resonance frequencies; a driving section generating a frequency-modulated drive signal to drive the transducer and transmit an ultrasonic wave; a transmitting control voltage generating section for generating a control voltage to change the resonant/resonance frequency of The transducer and applying it to the transducer in transmitting the ultrasonic wave; a receiving control voltage generating section for generating a control voltage to change the resonant/resonance frequency of the transducer and applying it to the transducer when a controllable amount of time delay has passed since The drive signal was generated; and a receiving section for sensing the intensity of a signal received as the ultrasonic wave at the transducer.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: May 16, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takehiko Suginouchi, Koichi Saito, Masahiko Hashimoto
  • Publication number: 20040093949
    Abstract: There is described apparatus for inspecting a non axi-symmetric elongate body comprising: at least one exciter array having a plurality of wave exciters operable to couple to an exterior surface of said elongate body; a driver unit operable to generate driving signals to excite said plurality of wave exciters wherein each driving signal to a respective wave exciter of said array is weighted with respect to driving signals to other wave exciters in said array such that a guided acoustic wave mode is excited; a receiving unit having a plurality of wave exciters in said array such that a guided acoustic wave mode is excited; a receiving unit having a plurality of wave receivers capable of receiving reflected guided acoustic waves; an analysis unit operable to analyse received waves to assess a condition of said non axi-symmetric elongate body.
    Type: Application
    Filed: December 2, 2003
    Publication date: May 20, 2004
    Inventor: David N Alleyne