Using Measurement Of Acoustic Effects (epo) Patents (Class 374/E11.009)
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Patent number: 11957435Abstract: An acousto-optic imaging method in which light waves and unfocused acoustic waves having various directions of propagation m are emitted in a medium, by spatially modulating the amplitude of the ultrasonic transducers of an array of transducers according to several periodic spatial amplitude modulations j, and the resulting optical signal Smj(t) is captured. For each direction of propagation m, the signals Smj(t) are spatially demodulated in order to determine a signal Sm(t) used to reconstruct the image of the medium.Type: GrantFiled: March 11, 2019Date of Patent: April 16, 2024Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE SUPÉRIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, SORBONNE UNIVERSITE, UNIV PARIS XIII PARIS-NORD VILLETANEUSEInventors: François Ramaz, Jean-Luc Gennisson, Jean-Baptiste Laudereau, Clément Dupuy, Jean-Michel Tualle
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Patent number: 10436754Abstract: A measuring device for non-mechanical-contact measurement of a layer, the measuring device including a light source operative to generate a pulse adapted to interact with the layer so as to generate a thermal wave in a gas medium present adjacent the layer. The thermal wave causes an acoustic signal to be generated. The measuring device further includes a detector adapted to detect a first signal responsive to the acoustic signal, the detector not being in mechanical contact with the layer. The first signal is representative of the measured layer.Type: GrantFiled: September 13, 2017Date of Patent: October 8, 2019Assignee: NOVELIS INC.Inventors: Heinrich Prinzhorn, Stefan Erdmann, Thomas Wuttke, Andreas Bauer, Bernd Abel, Ales Charvat
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Publication number: 20130066584Abstract: A temperature estimation method including: receiving a scan signal generated by scanning the target region using the ultrasound signal, and estimating, based on the scan signal, an echo shift which is an amount of change in time required for the ultrasound signal to pass through the target region, the time changing depending on the temperature in the target region; estimating, based on the estimated echo shift, a strain which is an apparent change rate of a travel distance required for the ultrasound signal to pass through the target region, the travel distance changing depending on the temperature in the target region; estimating, based on the estimated strain, a strain rate which is a temporal change rate of the strain; and estimating the temperature in the target region corresponding to the strain and the strain rate, based on a predetermined relationship between a strain, a strain rate, and a temperature.Type: ApplicationFiled: April 3, 2012Publication date: March 14, 2013Inventors: Li Lan, Shu Feng Fan, Kok Seng Chong, Anh Tuan Tran, Satoshi Kondo
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Publication number: 20120128468Abstract: A method for assembling a sensor assembly for use with a turbomachine is provided. The method includes providing a cover that includes a first portion and a second portion that extends from the first portion. A cavity is defined within the first portion. Moreover, a sensing device that is configured to measure at least one variable of a component of the turbomachine is inserted into the cavity. The second portion is removably coupled to a surface of the turbomachine component such that the cover securely couples the sensing device to the turbomachine component.Type: ApplicationFiled: November 22, 2010Publication date: May 24, 2012Inventors: Kurt Kramer Schleif, Kevin Leon Bruce, Shawn Carrol Yates, Leissner Ferdinand Poth, III, Derek Ray Wilson
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Publication number: 20110166797Abstract: The invention provides devices and methods for acoustically determining the properties of the contents of one or more reservoirs in a plurality of reservoirs. Each reservoir is adapted to contain a fluid. An acoustic radiation generator can be positioned in acoustic coupling relationship to each of the reservoirs. Acoustic radiation generated by the acoustic radiation generator is transmitted through each reservoir to an analyzer. The analyzer is capable of analyzing a characteristic of the transmitted acoustic radiation and optionally correlating the characteristic to a property of the reservoirs' contents. Properties that may be determined include volume, temperature, and composition. The invention is particularly suited to determining the properties of the contents of a plurality of reservoirs to allow for accuracy and control over the dispensing of fluids therefrom.Type: ApplicationFiled: July 12, 2010Publication date: July 7, 2011Applicant: LABCYTE INC.Inventors: Richard N. Ellson, Richard G. Stearns
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Publication number: 20110120989Abstract: An induction heating device comprises a frequency converter that generates a high-frequency drive voltage from an intermediate circuit voltage generated at least temporarily as a function of an AC mains voltage, a resonant circuit having an induction heating coil, with the drive voltage applied to the resonant circuit, and a temperature detection device that determines a temperature of a cooking vessel base which is heated by means of the induction heating coil. An auxiliary voltage source generated the intermediate circuit voltage over predefined time periods at a constant level. The frequency converter generates the drive voltage over time periods such that the resonant circuit oscillates at a natural resonant frequency in a substantially de-attenuated manner, and the temperature detection device further measuring at least one oscillation parameter over the time periods, and to evaluate the at least one measured oscillation parameter in order to determine the temperature.Type: ApplicationFiled: November 23, 2010Publication date: May 26, 2011Inventors: Wilfried Schilling, Tobias Schönherr, Werner Kappes, Martin Volk
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Publication number: 20110098609Abstract: The present invention relates to a hydrogel-containing temperature indicating element for use in ultrasound therapy. The temperature indicating element of the present invention and the therapeutic device and method making use of the same enable in some embodiments an automated adaptation of the power output as a function of the tissue temperature, avoiding therefore overheating or burning of the skin.Type: ApplicationFiled: November 11, 2008Publication date: April 28, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Christopher S. Hall, Ralph Kurt
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Publication number: 20110090935Abstract: A method for performing ultrasonic testing comprising, in one embodiment, the steps of firing an ultrasonic transducer to generate an ultrasonic pulse that passes through a delay line, measuring a delay echo time of flight, and determining the temperature of the delay line using the delay echo time of flight, thereby eliminating the need for additional temperature measuring devices. Other embodiments further comprise the step of using the temperature of the delay line to determine the temperature of a test object, and using the temperature of the test object to determine a thickness of the test object that is compensated for thermal expansion and temperature dependent ultrasonic velocity.Type: ApplicationFiled: October 16, 2009Publication date: April 21, 2011Inventors: John Michael Cuffe, James Barshinger, Ying Fan
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Patent number: 7910668Abstract: Provided is a method for monitoring a polymerization reaction in a fluid bed reactor to determine in on-line fashion a current value, and preferably also a limiting value, of a stickiness control temperature, and optionally controlling the reaction in response thereto in an effort to prevent occurrence of a discontinuity event. The stickiness control temperature is a temperature indicative of a characteristic of melting behavior of polymer resin in the reactor, and may be indicative of occurrence of resin sheeting or another discontinuity event. Optionally , a predetermined relation between values of acoustic energy in the reactor and values of a stickiness control temperature in used to provide error checking for determination of the stickiness control temperature, or a current value of the stickiness control temperature is determined from acoustic data and a predetermined relation between values of an acoustic condition in the reactor and values of the stickiness control temperature.Type: GrantFiled: May 5, 2010Date of Patent: March 22, 2011Assignee: Univation Technologies, LLCInventors: Michael E. Muhle, Richard B. Pannell, Eric J. Markel, Robert O. Hagerty
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Publication number: 20100046576Abstract: Methods of performing ultrasonic testing are disclosed, comprising the step of determining a temperature gradient of an ultrasonic wedge. In one embodiment of the invention, the method further comprises the steps of determining a sound velocity gradient of the ultrasonic wedge to determine the time it takes for sound waves emanating from a plurality of ultrasonic transducer elements attached to the ultrasonic wedge to reach a point of interest within a test object, and firing each of the ultrasonic transducer elements in a timed sequence based on the times such that sound waves from each of the ultrasonic transducer elements reach the point of interest at the same time. In other embodiments of the invention, the total attenuation and acoustic impedance of a sound wave traveling through the ultrasonic wedge is determined to adjust the amplitude of the sound wave such that the sound wave has sufficient amplitude to perform the ultrasonic testing.Type: ApplicationFiled: August 19, 2008Publication date: February 25, 2010Inventor: Anand DESAI
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Publication number: 20090245323Abstract: At least one transceiver sends ultrasonic pulses through an object, which at least partially transmits ultrasonic pulses, into an element which reflects the ultrasonic pulses. The ultrasonic pulse(s) can be reflected in a temperature-correlated manner from the reflective element to the transceiver.Type: ApplicationFiled: September 13, 2005Publication date: October 1, 2009Inventors: Hans-Gerd Brummel, Uwe Linnert, Klaus Newerla, Michael Willsch
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Publication number: 20090213897Abstract: An ultrasonic diagnostic apparatus includes: an ultrasonic probe in which a first temperature sensor and a second temperature sensor are located posterior to an oscillator; and a surface temperature calculation device for calculating a surface temperature of the ultrasonic probe on the basis of a first detection temperature Ta detected by the first temperature sensor and a second detection temperature Tb detected by the second temperature sensor. Also, an ultrasonic diagnostic apparatus includes: an ultrasonic probe in which a first temperature sensor and a second temperature sensor are embedded in a backing material; and a surface temperature calculation device for calculating a surface temperature Ts of the ultrasonic probe on the basis of a first detection temperature Ta detected by the first temperature sensor and a second detection temperature Tb detected by the second temperature sensor.Type: ApplicationFiled: June 27, 2008Publication date: August 27, 2009Inventor: Shinichi Amemiya
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Publication number: 20090175313Abstract: The invention provides a method and a device for determining the temperature of a semiconductor substrate. A resonance circuit (110) is provided on the semiconductor substrate and is formed by a junction capacitor (11) and an inductor (12). The substrate is placed on a holder and the with electromagnetic energy of an electromagnetic field (5) generated by a radiation device (200). A circuit (110) is determined by detecting an effect of the resonance circuit (110) on the irradiated temperature of the semiconductor substrate is determined as a function of the resonance frequency. The method and device according to the invention provide for a more accurate determination of the temperature of the semiconductor substrate due to an increased sensitivity to the temperature of the junction capacitor (11).Type: ApplicationFiled: April 19, 2007Publication date: July 9, 2009Applicant: NXP B.V.Inventors: Srdjan Kordic, Meindert M. Lunenborg, Jean-Philippe Jacquemin
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Publication number: 20090028211Abstract: An ultrasonic diagnostic apparatus includes an ultrasonic probe having a plurality of transducers arranged and a plurality of temperature sensors located along a direction of arranging the transducers, and a temperature calculation device for obtaining a maximum temperature on the basis of the detected temperatures of the plurality of temperature sensors.Type: ApplicationFiled: July 24, 2008Publication date: January 29, 2009Inventor: Shinichi Amemiya
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Publication number: 20090007627Abstract: A system for measuring the height of bin content includes a transmitter for transmitting an acoustic pulse towards the upper surface of the content, a non-collinear receiver array for receiving an echo of the pulse and producing signals in response to the echo, and a processing apparatus for computing one or more directions of arrival of the signals from the upper surface to the array along with corresponding measured distances. Preferably, the receivers are transducers that also serve as transmitters. Two or more such measured distances constitute a map of the upper surface for estimating the quantity of the bin content. Preferably, the system includes a pulse shaper and repeater for optimizing the pulse shape relative to the signals.Type: ApplicationFiled: February 27, 2006Publication date: January 8, 2009Applicant: A.P.M. AUTOMATION SOLUTIONS LTD.Inventors: Ofir Perl, Yossi Zlotnick
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Patent number: 7434988Abstract: An acoustic pyrometer measures the average gas temperature across a space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an acoustic signal generator that generates a high amplitude acoustic signal with a short rise time The acoustic signal generator includes an outer tank closed at top and bottom ends by top and bottom end walls and enclosing an outer chamber. A cylinder is supported within the tank and has top and bottom opposed ends. A mid-plate extends across the cylinder and defines the bottom end, and an axial opening in the mid-plate receives a shaft of a piston assembly having an upper piston and a lower piston at ends of the shaft. A throat is attached to the bottom end, and receives the lower piston. The lower piston seals the throat when received in the throat. The upper piston is slidable in the cylinder under influence of air pressure.Type: GrantFiled: May 17, 2006Date of Patent: October 14, 2008Assignee: Enertechnix, Inc.Inventors: George Kychakoff, Michael F. Anna, Ed Danzer
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Patent number: 7434989Abstract: A temperature measurement system is characterized by at least one passive surface acoustic wave (SAW) temperature sensor. The sensor includes at least one piezoelectric substrate having an interdigital SAW transducer disposed upon the piezoelectric substrate for conversion of an RF signal into an acoustic wave and vice versa. At least three additional SAW elements are also disposed on the substrates in a manner such that they define two acoustic propagation paths that are non-parallel relative to the crystal axes of the substrates, and such that the temperature coefficients of delay in the two tracks differ. The SAW elements receive a signal from the SAW transducer and produce response signals. The response signals combine to produce a signal with a power spectral density such that the integrated power within each of two specified portions of the spectrum provides an indicator of the temperature.Type: GrantFiled: September 7, 2006Date of Patent: October 14, 2008Assignee: Applied Sensor Research & Development CorporationInventor: Leland P. Solie
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Publication number: 20080205479Abstract: An apparatus for sensing a change in environmental conditions is disclosed. The apparatus includes a coating or a wire between two surfaces that has a mechanical property changed as a result of a change in the environmental conditions. The change in the mechanical property of the coating or wire results in a change in a vibration characteristic of the apparatus, such as the frequency, phase, amplitude or quality factor. The change in the vibration characteristic can be used to determine the change in the environmental condition.Type: ApplicationFiled: November 15, 2007Publication date: August 28, 2008Applicant: ARIZONA BOARD OF REGENTS FOR AND ON BEHALF OF ARIZONA STATE UNIVERSITYInventors: Nongjian Tao, Francis Tsow
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Publication number: 20080184804Abstract: The invention relates to a device and a method for detecting a fault in a measurement device comprising a resonator and means for measuring a resonant frequency of the resonator. According to the invention, the device further includes means delivering information (S3) representative of the quality factor of the resonator (3) at the resonant frequency.Type: ApplicationFiled: December 20, 2005Publication date: August 7, 2008Applicant: ThalesInventors: Bertrand Leverrier, Olivier Lefort