Reflection Or Scattering Of Acoustic Waves Patents (Class 73/861.25)
  • Patent number: 10555721
    Abstract: Nonlinear ultrasound imaging systems and methods are disclose. In one aspect, a nonlinear ultrasound imaging system includes a first transducer configured to transmit a first ultrasound signal along a scan line, a second transducer configured to sweep a second ultrasound signal along the scan line such that the first and second ultrasound signals intersect at a plurality of voxels, and a third transducer configured to receive echoes associated with interactions of the first and second ultrasound signals at the plurality of voxels. The nonlinear ultrasound imaging system further includes a processor configured to generate an ultrasound image based on the echoes.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 11, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yilei Li, Steven Chu
  • Patent number: 10551232
    Abstract: A flow meter detects a flow rate of a fluid. The flow meter includes a housing having a flow passage, through which the fluid can be guided from an inlet opening of the housing to an outlet opening of the housing, a measuring tube, which is inserted into the flow passage and constricts the flow cross section in one section of the flow passage, and a holding device, by which the measuring tube is retained on the housing. A respective flow straightener having at least one aperture through which the fluid can flow is arranged between the inlet opening and the measuring tube and/or between the measuring tube and the outlet opening. The flow straightener is configured as a separate component part, which is secured on the holding device by a form-locking or force-locking connection.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: February 4, 2020
    Assignee: Diehl Metering GmbH
    Inventors: Roland Messthaler, Markus Eff, Hans-Michael Sonnenberg
  • Patent number: 10520342
    Abstract: An ultrasonic flowmeter is provided with at least one measuring tube having at least one recess. Disposed in the recess are at least a first ultrasonic transducer and a second ultrasonic transducer, wherein the first ultrasonic transducer is designed as an ultrasonic transmitter and/or as an ultrasonic receiver and the second ultrasonic transducer is designed as an ultrasonic transmitter and/or as an ultrasonic receiver. Further disposed in the recess is at least one reflection surface. The first and second ultrasonic transducers are arranged on the measuring tube such that the measuring path between the first and the second ultrasonic transducers comprises at least one reflection at the reflecting surface. The provision of the reflection surface in the recess provides an ultrasonic flowmeter with which the flow profile can be easily measured, especially in the edge region.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: December 31, 2019
    Assignee: KROHNE AG
    Inventors: Arie Huijzer, Jeroen Martin van Klooster
  • Patent number: 10492700
    Abstract: A method of assessing status of a biological tissue includes irradiating an electromagnetic signal, via a probe, into a biological tissue. The irradiated electromagnetic signal is received after being scattered/reflected by the biological tissue. Blood flow information pertaining to the biological tissue is provided, and the received signal is analyzed based at least upon the provided blood flow information and upon knowledge of electromagnetic signal differences in normal, suspicious, and abnormal tissue. Using a dielectric properties reconstruction algorithm, dielectric properties of the biological tissue are reconstructed based at least upon results of the analyzing step and upon blood flow information, and using a tissue properties reconstruction algorithm, tissue properties of the biological tissue are reconstructed based at least in part upon results of the reconstructing step and upon blood flow information.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: December 3, 2019
    Assignee: EMTensor GmbH
    Inventor: Serguei Y Semenov
  • Patent number: 10480976
    Abstract: The flowmeter having at least one measuring tube and having at least one inlet element, wherein the inlet element is connected to the at least one measuring tube and is arranged before the at least one measuring tube in respect to flow direction. The flowmeter that is also suitable for the verification of erosive media is achieved in that at least one inflow element is provided, wherein the inflow element is arranged at least partly within the inlet element and wherein the inflow element is detachably connectable to the inlet element.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: November 19, 2019
    Assignee: KROHNE AG
    Inventors: Christopher Rolph, Tao Wang
  • Patent number: 10451465
    Abstract: A gas meter includes meter body that has internal space, meter inlet into which a fluid flows, meter outlet from which the fluid flows out, and shielding plate that is located with a predetermined distance from an opening portion of meter inlet. In addition, the gas meter includes flow rate measurer that measures a flow rate of the fluid, and connection member that connects outlet of flow rate measurer and meter outlet to each other. Furthermore, meter inlet, shielding plate, flow rate measurer, connection member, and meter outlet are linearly located in this order.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 22, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masaki Sugiyama, Hiroaki Ishimoto
  • Patent number: 10408648
    Abstract: An embodiment provides a method for measuring a fluid parameter of fluid flowing in a channel, including: transmitting, using a transmitter of a device, directed energy carrying a signal toward a surface of a fluid in a fluid channel, so as to produce one or more reflections from the fluid surface; detecting, by at least one receiver of the device, one or more received signals associated with the one or more reflections so produced; and determining, based upon a measurement beam comprising characteristics of the transmitted and received signals, a fluid parameter to be measured using a processor of the device; wherein, a measurement beam characteristic is adjusted based on a distance from the device to the fluid surface. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: September 10, 2019
    Assignee: HACH COMPANY
    Inventors: David L. Rick, Ernie Ray Paoli, Philip N. King
  • Patent number: 10175077
    Abstract: Elements of a single beam-forming array of ultrasonic transducer elements are selectively activated to direct two or more ultrasonic beams to a series of acoustic mirrors mounted to or fabricated at known locations at an inside surface of the pipe. The ultrasonic beams traverse measurement path segments at known angles through a fluid flowing through the pipe before being received back at the single transducer array. Fluid flow velocity along the fluid flow path is calculated as a function of a difference in time-of-flight (TOF) along first and second ultrasonic beam paths after subtracting TOF components contributed by known-length non-measurement path segments. The difference in TOF results from an additive downstream fluid flow velocity vector component along a first measurement path segment and a subtractive upstream fluid flow velocity vector component along a second measurement path segment.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: January 8, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Matthieu Chevrier, Michael Weitz
  • Patent number: 10161782
    Abstract: Provided is a sensor operative to track changes in a liquid level of a hand-held liquid container, the sensor comprising: an ultrasonic liquid-level sensor configured to indicate a liquid level of a liquid in a hand-held liquid container, wherein the ultrasonic liquid-level sensor is capable of indicating the liquid level when the surface of the liquid is less than 20 centimeters away from the ultrasonic liquid-level sensor; a radio transmitter; and a processor configured to draw power from a portable power source, receive liquid-level indications from the ultrasonic liquid-level sensor, and cause the radio transmitter to transmit data indicative of changes in the liquid level.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 25, 2018
    Assignee: Trago, Inc.
    Inventors: Davis Michael Saltzgiver, Jac Tyson Saltzgiver, III
  • Patent number: 10151610
    Abstract: A flow rate measurement device is configured to measure a flow rate of a gas flowing inside of a pipeline, and includes an ultrasonic transducer installed so as to be in contact with the pipeline, and a flow rate calculation part configured to calculate the flow rate of the gas according to a result of reception of ultrasonic wave from the ultrasonic transducer, wherein the ultrasonic transducer includes an ultrasonic oscillation part configured to emit the ultrasonic wave toward the inside of the pipeline and an ultrasonic reception part configured to receive the ultrasonic wave, and at least the ultrasonic oscillation part has a focusing part configured to focus the ultrasonic wave on a center of the pipeline.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 11, 2018
    Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Shuichi Umezawa, Katsuhiko Tanaka, Masaki Yokosaka, Ryoji Miyauchi, Tatsuya Kawaguchi, Hiroshige Kikura, Nobuyoshi Tsuzuki, Keisuke Tsukada
  • Patent number: 9921087
    Abstract: This system for measuring a flow rate includes a receiver of bulk acoustic waves, a first emitter of bulk acoustic waves in the fluid, intended to be arranged upstream of the receiver in such a way as to emit acoustic waves to the receiver, a second emitter of bulk acoustic waves in the fluid, intended to be arranged downstream of the receiver in such a way as to emit acoustic waves to the receiver, and a signal processing device designed to determine a flow rate value according to at least one characteristic of an electrical signal supplied by the receiver. It further includes an element for synchronizing the first and second emitters with each other in such a way as to generate destructive acoustic interferences between the acoustic waves that they emit before they are received by the receiver.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: March 20, 2018
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventor: Jean-Pierre Nikolovski
  • Patent number: 9880037
    Abstract: There is described a method for remotely monitoring an exhaust plume emitted by an exhaust stack, the method comprising: determining a velocity of a flow of the exhaust plume at an output of the exhaust stack, the exhaust plume comprising one molecule; propagating a first light within the exhaust plume, the first light being propagated in close proximity to the output of the exhaust stack; detecting a second light emitted by the exhaust plume and measuring an energy of the second light, the second light resulting from an interaction of the first light with the exhaust plume; and determining a mass emission rate of the at least one molecule using the measured energy of the detected second light, the velocity, and a surface area of the exhaust plume at the output of the exhaust stack, the surface area being orthogonal to a direction of the flow of the exhaust plume.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: January 30, 2018
    Assignee: INSTITUT NATIONAL D'OPTIQUE
    Inventors: François Babin, Jean-François Gravel
  • Patent number: 9817116
    Abstract: A survey system including a multibeam echo sounder having a projector array and a hydrophone array in a Mills Cross arrangement uses a multicomponent message to ensonify one or more fans to estimate a Doppler velocity.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: November 14, 2017
    Assignee: R2Sonic, LLC
    Inventors: Jens Steenstrup, Christopher Tiemann, Mark Chun, Kirk Hobart
  • Patent number: 9733112
    Abstract: The invention relates to a method of operating an ultrasonic flow meter by digitally sampling received signals. Acoustic wave packets are transmitted through a measuring distance in opposite directions, and the received signals are digitized at a sampling frequency being below the Nyquist-limit of two times the signal frequency of the wave packet to generate digitized under-sampled signals 31. From the digitized under-sampled signals, the difference in propagation time along the measuring distance is determined.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: August 15, 2017
    Assignee: Kamstrup A/S
    Inventors: Jens Lykke Sørensen, Paul Martin Bendixen
  • Patent number: 9689728
    Abstract: The invention concerns an ultrasonic transducer, comprising a coupling element which has a first recess, the first recess being provided for the arrangement of a piezoelectric element which feeds an ultrasound signal into the coupling element, and there being disposed between the piezoelectric element and the coupling element an intermediate layer which comprises a metal disc, the metal disc comprising retaining elements (a) each with a first segment lying on the same plane as the metal disc and projecting radially from the perimeter of the metal disc and (b) each having a second segment which adjoins the first segment, projects from the plane of the metal plate and is connected to the first segment.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: June 27, 2017
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Achim Wiest, Andreas Berger
  • Patent number: 9649037
    Abstract: Combined blood flow and blood pressure measurements are used for the calculation of central vascular blood flow parameters. Blood flow measurements may be made simultaneously with arterial pressure measured either centrally or peripherally and central venous pressure for the monitoring of human subjects. A combined blood flow and blood pressure measurement device for hemodynamic monitoring may include a Doppler ultrasound probe utilizing a continuous wave or pulse wave ultrasound beam for the measurement of blood flow in the aorta, combined with arterial pressure measurement, or signal input from a suitable pressure transducer system from one of either the radial, brachial, dorsalis pedis or femoral artery. The ultrasound probe may comprise either an esophageal or suprasternal ultrasound probe, while the blood pressure measurement may be either an electronic transducer blood pressure sphygmomanometer on the arm, or a finger cot infrared light optical pulse detector.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: May 16, 2017
    Assignee: DELTEX MEDICAL LIMITED
    Inventors: Graham Desmond Lowe, Richard John Willshire, Leonard Smith, Andrew Jones, Ewan Alistair Phillips
  • Patent number: 9467223
    Abstract: A system for measuring an RF input signal frequency includes a sampling optical pulse train with a frequency-dithered repetition-rate, and a sub-sampled analog link coupled to the optical pulse train whereby the RF input signal frequency is determined. This frequency dither imparts well-characterized modulation sidebands onto the input RF signal to be measured. By measuring the amplitude of these sidebands relative to the incoming aliased signal amplitude the frequency of the original signal is readily determined. The use of optical sampling dramatically increases the bandwidth over which the disambiguation technique is applied, and coarse disambiguation is achieved in a single acquisition.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: October 11, 2016
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Jason D. McKinney, Sharon R. Harmon
  • Patent number: 9433733
    Abstract: An improved pump, reservoir and reservoir piston are provided for controlled delivery of fluids. A motor is operably coupled to a drive member, such as a drive screw, which is adapted to advance a plunger slide in response to operation of the motor. The plunger slide is removably coupled to the piston. A method, system, and an article of manufacture for automatically detecting an occlusion in a medication infusion pump is provided. The electrical current to an infusion pump is measured. Based on measurements of one or more variables, the infusion pump detects whether there is an occlusion in the system. The methods of detecting occlusions may be dynamic.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: September 6, 2016
    Assignee: MEDTRONIC MINIMED, INC
    Inventors: Sheldon B. Moberg, Ian B. Hanson, Cary D. Talbot
  • Patent number: 9433732
    Abstract: An improved pump, reservoir and reservoir piston are provided for controlled delivery of fluids. A motor is operably coupled to a drive member, such as a drive screw, which is adapted to advance a plunger slide in response to operation of the motor. The plunger slide is removably coupled to the piston. A method, system, and an article of manufacture for automatically detecting an occlusion in a medication infusion pump is provided. The electrical current to an infusion pump is measured. Based on measurements of one or more variables, the infusion pump detects whether there is an occlusion in the system. The methods of detecting occlusions may be dynamic.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: September 6, 2016
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Sheldon B. Moberg, Ian B. Hanson, Cary D. Talbot
  • Patent number: 9389204
    Abstract: A method for characterizing ultrasound scatterers in a medium comprising providing ultrasound data representing a region of interest comprising a plurality of scatterers in a medium, the plurality of scatterers including clusters of scatterer sub-units, the scatterers having a physical property value to be estimated and the scatterer sub-units having at least one known physical parameter value; modelling the ultrasound data using an at least second order function of a spatial organization parameter defining the spatial organization of the scatterers; and estimating the physical property value of the scatterers from the modelled ultrasound data and the at least one known physical parameter of the sub-units by a regression of the spatial organization parameter as a function of frequency. A system for characterizing ultrasound scatterers is also included.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: July 12, 2016
    Assignee: VAL-CHUM, LIMITED PARTNERSHIP
    Inventors: Guy Cloutier, François Yu, Emilie Franceschini, David Savery
  • Patent number: 9097568
    Abstract: A system and method for ultrasonic flow metering. In one embodiment, an ultrasonic flow metering system includes a plurality of ultrasonic flowmeters. Each of the ultrasonic flowmeters includes a flow processor. The flow processor is configured to maintain a plurality of velocity bins, each of the bins corresponding to a flow velocity range for the flowmeters. The flow processor is also configured to maintain, within each of the bins, a value indicative of past average velocity of fluid flow through a given one of the flowmeters associated with a given one of the bins. The flow processor is further configured to determine, responsive to one of the flowmeters having failed, an estimated average fluid flow velocity through the system based on the values maintained within the bins.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: August 4, 2015
    Assignee: DANIEL MEASUREMENT AND CONTROL, INC.
    Inventors: Kerry D. Groeschel, Graham W. Forbes
  • Patent number: 9066703
    Abstract: An ultrasound device including a main processing unit, a probe part, an array, and an apodization unit that receives an ultrasound signal from the array, the signal having multiple channels, that determines a weight for each channel based on an apodization profile being one of ring-centered and edge-centered, and that multiplies the received ultrasound signal by the determined weight for each channel. The array includes a first area including a first plurality of elements having a first functionality, a second area including a second plurality of elements having a second functionality, and a third area including a third plurality of elements having a third functionality different from the first functionality. The second area further includes a fourth area having a number of elements that are switchable between the second and third types of functionality. The array also includes a dynamic spot including the third and fourth areas.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: June 30, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Gregg Miller
  • Publication number: 20150114135
    Abstract: A method of retrofitting an orifice meter includes providing an orifice fitting body having a bore, an orifice plate, a plurality of tap holes, and a plurality of pressure sensors installed in the plurality of tap holes. The method further includes removing the orifice plate and the plurality of pressure sensors from the orifice fitting body and installing a plurality of transducers into the plurality of tap holes. At least one of the plurality of transducers is configured to generate a signal and at least one of the plurality of transducers is configured to receive the signal. Additionally, the method includes measuring a flow rate of a fluid flowing through the bore based on an output of each of the plurality of transducers.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 30, 2015
    Applicant: Daniel Measurement and Control, Inc.
    Inventor: Darren Scott Schwarz
  • Patent number: 8997583
    Abstract: An ultrasonic flow sensor for use in a fluid medium is described. The ultrasonic flow sensor includes at least two ultrasonic converters which are situated in a flow tube offset relative to one another, longitudinally with respect to a flow of the fluid medium. The ultrasonic flow sensor also includes a reflection surface, the ultrasonic converters being set up to exchange ultrasonic signals via simple reflection on the reflection surface. In addition, a deflection device is provided between the ultrasonic converters which is set up to essentially suppress parasitic ultrasonic signals, which are reflected from the reflection surface and which strike the deflection device, by deflection away from the ultrasonic converters.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: April 7, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Tobias Lang
  • Patent number: 8960017
    Abstract: A method of retrofitting an orifice meter includes providing an orifice fitting body having a bore, an orifice plate, a plurality of tap holes, and a plurality of pressure sensors installed in the plurality of tap holes. The method further includes removing the orifice plate and the plurality of pressure sensors from the orifice fitting body and installing a plurality of transducers into the plurality of tap holes. At least one of the plurality of transducers is configured to generate a signal and at least one of the plurality of transducers is configured to receive the signal. Additionally, the method includes measuring a flow rate of a fluid flowing through the bore based on an output of each of the plurality of transducers.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: February 24, 2015
    Assignee: Daniel Measurement and Control, Inc.
    Inventor: Darren Scott Schwarz
  • Publication number: 20150000422
    Abstract: An ultrasonic flow measurement device for ascertaining flow velocity, respectively volume flow, of a fluid, especially a gas or a liquid, using a travel-time difference method, comprising: a measuring tube having a straight measuring tube axis; at least one transmitter for transmitting an acoustic signal; at least one receiver for receiving the acoustic signal; and at least one reflection surface for reflecting the acoustic signal. The transmitter and the receiver are arranged on the tube wall of the measuring tube in such a manner that they can transmit the acoustic signal inclined or perpendicularly to the flow direction of the fluid, wherein at least one reflection surface is embodied concavely in a preferential direction; and a method for ascertaining flow velocity, respectively volume flow, of a fluid.
    Type: Application
    Filed: January 29, 2013
    Publication date: January 1, 2015
    Inventors: Achim Wiest, Sascha Grunwald, Andrea Berger, Oliver Brumberg
  • Patent number: 8904880
    Abstract: A method for relaying a radio signal between two points having an obstacle therebetween is described. The method includes maintaining an unmanned aerial vehicle (UAV) in an orientation with respect to the two points, the UAV having at least one passive reflective device having an elongated configuration thereon, transmitting a signal from one of the two points, the transmitted signal impinging the at least one passive reflective device, and receiving the signal at the other of the two points, the received signal being a signal reflected from the at least one passive reflective device.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: December 9, 2014
    Assignee: The Boeing Company
    Inventors: Brian J. Tillotson, Keith J. Glover
  • Patent number: 8892373
    Abstract: A method for determining the starting instant (t0) of a periodically oscillating signal response (E2; E2?), wherein the signal response comprises a first set of half periods (E2a-d; E2?a-d) having a polarity equal to a polarity of the first half period (E2a; E2?a) in the signal response, and a second set of half periods (E2e-h; E2?e-h) having a polarity opposite to the polarity of the first half period (E2a; E2?a) in the signal response. The method comprises the steps of: determining a peak half period (E2e; E2?f) as the half period with the highest amplitude in a selected one of the first and second sets; determining a zero-crossing instant (ZC1; ZC?1) of the signal response occurring a known time distance from the peak half period (E2e; E2?f); determining the starting instant (t0) of the signal response (E2; E2?) based on the zero-crossing instant (ZC1; ZC?1) and a relationship between the peak half period (E2e; E2?f) and the starting instant (t0).
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: November 18, 2014
    Assignee: Axsensor AB
    Inventor: Jan Bostrom
  • Patent number: 8881603
    Abstract: Method and measuring device for measuring at least one measured variable. A first sensor transmits a first measurement signal, which includes at least one half-wave of a mechanical wave or an electromagnetic wave, and, at a time t from the first measurement signal, transmits at least a second measurement signal. At least a second sensor receives the measurement signals. The travel time and TOF1 of the first measurement signal between transmitting of the first measurement signal and receiving of the first measurement signal is known, wherein the time t is so selected that it is a whole numbered multiple of the travel time TOF1 of the first measurement signal or that it is a whole numbered multiple of the average value of the travel times TOF1 and TOF2, wherein the travel time and TOF2 between transmitting a third measurement signal from the second sensor and receiving of the third measurement signal by the first sensor is known.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: November 11, 2014
    Assignee: Endress + Hauser Flowtec AG
    Inventor: Pierre Ueberschlag
  • Patent number: 8852110
    Abstract: The velocity of fluids containing particles that scatter ultrasound can be measured by determining the Doppler shift of the ultrasound scattered by the particles in the fluid. Measuring fluid flow in cylindrical vessels such as blood vessels is an important use of Doppler ultrasound. This invention teaches using various configurations of cylindrical diffraction-grating transducers and cylindrical non-diffraction-grating transducers that suppress the Doppler shift from non-axial components of fluid velocity while being sensitive to the Doppler shift produced by axial velocity components. These configurations thus provide accurate measurement of the net flow down the vessel, even when the fluid flow is curved or not parallel to the vessel wall.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: October 7, 2014
    Assignee: DVX, LLC
    Inventor: David Vilkomerson
  • Publication number: 20140230567
    Abstract: Apparatus and methods for velocity scanning in, e.g., bodies of water. In one embodiment, a scanned one-dimensional transducer array Doppler sonar arrangement is used to remotely measure both vertical and horizontal profiles of a river or channel along-stream water velocities within a cross-section of the river/channel from a single side-mounted sonar.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: Rowe Technologies, Inc.
    Inventors: Francis Rowe, Marc Parent
  • Publication number: 20140208867
    Abstract: The open channel flow meter of the present invention uses a progressive spectral analyzer to increase the efficiency and accuracy thereof. This is accomplished by using a smaller degree fast Fourier transform covering small sections of the span of the sensor. Additional sections of the span are added to the analysis as required to cover the desired velocity range. This approach also allows one to bypass the processing of velocity spans outside the actual site conditions. This allows circuitry which costs less, uses less power, and achieves more precise readings in a shorter time period.
    Type: Application
    Filed: April 2, 2014
    Publication date: July 31, 2014
    Applicant: FloWav, Inc.
    Inventors: JOHN BYRD, DONALD R. SAUER, BRUCE COHEN
  • Publication number: 20140130606
    Abstract: A method of retrofitting an orifice meter includes providing an orifice fitting body having a bore, an orifice plate, a plurality of tap holes, and a plurality of pressure sensors installed in the plurality of tap holes. The method further includes removing the orifice plate and the plurality of pressure sensors from the orifice fitting body and installing a plurality of transducers into the plurality of tap holes. At least one of the plurality of transducers is configured to generate a signal and at least one of the plurality of transducers is configured to receive the signal. Additionally, the method includes measuring a flow rate of a fluid flowing through the bore based on an output of each of the plurality of transducers.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 15, 2014
    Applicant: DANIEL MEASUREMENT AND CONTROL, INC.
    Inventor: Darren Scott Schwarz
  • Patent number: 8689638
    Abstract: An ultrasonic flow sensor comprises a flow cell body with an inlet on one side and an outlet on the other side through which the liquid or gaseous media flows; an inner flow conduit with rough surface which not only decreases the flow transition point from turbulence regime to laminar regime but also suppresses the parasitic multi-mode ultrasonic waves; one pair of electro-ultrasonic transducers for transmitting and receiving ultrasound signals; one pair of ultrasonic wave reflecting mirrors for guiding ultrasonic waves from one transducer to the other; and two reflecting mirror support fixtures which set the position and orientation of the ultrasonic wave reflecting mirrors in such a way that their disturbance to the flow inside the inner flow conduit is minimized while the ultrasonic signal strength is maintained.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: April 8, 2014
    Assignee: Spire Metering Technology LLC
    Inventor: Chang Shen
  • Patent number: 8684933
    Abstract: A portable ultrasound imaging system employs a mechanically focused multi-element circular annular transducer that is mechanically scanned using a motor. Received echoes are processed to form two dimensional gray scale B mode images or two dimensional color tissue flow images which are displayed on a display unit. In case of color flow imaging, a high pulse repetition frequency imaging sequence is employed for a reasonable frame rate and special down-sampling techniques are applied to achieve an effective low pulse repetition frequency for flow estimation with enough signal to noise ratio. The system also includes a docking subsystem which charges a system battery and transfers patient and image data between a PACS system, workstation or other information system and the portable ultrasound imaging system.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: April 1, 2014
    Assignee: ImSonic Medical, Inc.
    Inventors: Xiaohui Hao, Donald J. Nisler
  • Publication number: 20130333483
    Abstract: Dynamic characteristics of a liquid surface (160) are measured by sending acoustic signals (140) to or more target areas (162a-162c) on the liquid surface and receiving said acoustic signals (150a-150c) after reflection from the target area. The detected signals are processed to measure phase shift between the sent and received acoustic signals, the measured phase shift varying over time. The varying phase shift is used to indicate fluctuations over time in the local height of the liquid surface in the target area. The liquid may be water, effluent etc. flowing in a channel or conduit. With suitable calibration, the measured height fluctuations can be used to infer flow characteristics such as surface roughness, wave height, flow depth, flow velocity, volumetric flow rate, shear stress, sediment transport. Using an array of receivers and target areas, additional spatial and temporal characteristics of the surface and the flow can be measured.
    Type: Application
    Filed: March 5, 2012
    Publication date: December 19, 2013
    Applicant: University of Bradford
    Inventors: Kirill Horoshenkov, Andrew Nichols
  • Publication number: 20130264142
    Abstract: A coupling element of an ultrasonic transducer suitable for mode conversion of an acoustic longitudinal wave between an in-coupling surface and an out-coupling surface of the coupling element. The coupling element has a first and second interface with a predetermined medium. A first angle between the in-coupling surface and the first interface and a second angle between the first interface and the out-coupling surface are so selected that a transverse waves fraction is reflected on the first interface to the out-coupling surface. The first angle between the in-coupling surface and the first interface and a third angle between the first interface and the second interface are so selected that a longitudinal wave fraction is reflected on the first interface for second interface. A fraction of the longitudinal waves reflected to the second interface is reflected on the second interface back into the coupling element.
    Type: Application
    Filed: November 23, 2011
    Publication date: October 10, 2013
    Applicant: ENDRESS & HAUSER FLOWTEC AG
    Inventors: Beat Kissling, Quirin Muller
  • Patent number: 8516901
    Abstract: The present invention relates to a measurement insert for a flow meter and a flow meter. The present invention discloses using, in a customary housing of a bulk water meter, e.g. a Woltman meter, instead of a device for mechanical flow measurement a measurement insert which comprises an ultrasonic measurement path and can be fastened to the opening of the housing by a housing cover.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: August 27, 2013
    Assignee: Hydrometer GmbH
    Inventors: Harald Kroemer, Wilhelm Öfelein
  • Publication number: 20130180342
    Abstract: An ultrasonic flow sensor comprises a flow cell body with an inlet on one side and an outlet on the other side through which the liquid or gaseous media flows; an inner flow conduit with rough surface which not only decreases the flow transition point from turbulence regime to laminar regime but also suppresses the parasitic multi-mode ultrasonic waves; one pair of electro-ultrasonic transducers for transmitting and receiving ultrasound signals; one pair of ultrasonic wave reflecting mirrors for guiding ultrasonic waves from one transducer to the other; and two reflecting mirror support fixtures which set the position and orientation of the ultrasonic wave reflecting mirrors in such a way that their disturbance to the flow inside the inner flow conduit is minimized while the ultrasonic signal strength is maintained.
    Type: Application
    Filed: January 12, 2012
    Publication date: July 18, 2013
    Applicant: Spire Metering Technology LLC
    Inventor: Chang Shen
  • Patent number: 8480590
    Abstract: Some embodiments include acquisition of color Doppler data, and detection of one or more transitions of the color Doppler data, each of the one or more transitions being between a first area representing flow velocity in a first direction and a second area representing flow velocity not in the first direction. A normalized energy function across one or more of the one or more transitions is calculated, a configuration of flow areas within the color Doppler data is determined, and aliasing corrections for the color Doppler data are determined based on the normalized energy functions and the configuration of flow areas.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: July 9, 2013
    Assignee: Hitachi Aloka Medical, Ltd.
    Inventor: Tadashi Tamura
  • Patent number: 8456955
    Abstract: A housing for a phased array monostatic sodar system with a transducer array that sequentially emits and receives a set of sound beams along different primary axes. The housing includes an enclosure having a plurality of sidewalls, each sidewall of the plurality of sidewalls having an inner surface, the enclosure configured to emit and receive the set of sound beams. Each inner surface of each sidewall of the plurality of sidewalls defines at least a partially elliptical cross-section configured to substantially envelop at least a portion of an angled, conical sound beam of the set of sound beams.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: June 4, 2013
    Assignee: Second Wind Systems, Inc.
    Inventors: Niels LaWhite, Louis Manfredi, Walter L. Sass
  • Publication number: 20130104667
    Abstract: An ultrasonic flow rate measuring device which measures a flow rate of a medium flowing in the tube body, when one of a plurality of the ultrasonic transmitting-receiving means transmit an ultrasonic wave as a transmitting means, by making another one of a plurality of the ultrasonic transmitting-receiving means receive the ultrasonic wave as a receiving means, and when the other ultrasonic transmitting-receiving means transmit the ultrasonic wave as the transmitting means, by making the one ultrasonic transmitting-receiving means receive the ultrasonic wave as the receiving means, wherein an ultrasonic wave propagation control means which controls a propagation of the ultrasonic wave is equipped between the ultrasonic transmitting-receiving means as the transmitting means and the receiving means. Further, the ultrasonic flow rate measuring device is easily mounted to a tube body.
    Type: Application
    Filed: December 20, 2012
    Publication date: May 2, 2013
    Applicant: KABUSHIKIGAISHA IZUMI GIKEN
    Inventor: Kabushikigaisha Izumi Giken
  • Publication number: 20130080081
    Abstract: A fluid flow meter estimates the velocity of water or another fluid flowing through pipe by comparing measurements of the water velocity to one or more pre-determined templates. The fluid flow meter may collect measurement signals from one or more flow sensors (e.g., ultrasonic transducers), estimate the fluid velocity or flow rate by comparing the measurement signals to the template(s), and either store the comparison results in local memory, transmit the results to a remote memory or server, or both. In some embodiments, the fluid flow meter transmits the results to a server via a wireless interface (e.g., a Zigbee, Bluetooth, or Wi-fi interface). The transducers and processing system can be powered by a battery, a power line, or, for manifolds installed outdoors, a solar cell. Example transducers and processing systems may also have a passive wake-up feature for power reduction; that is, they may only draw power when water or another fluid flows through the pipe.
    Type: Application
    Filed: November 30, 2012
    Publication date: March 28, 2013
    Applicant: Soneter, LLC
    Inventor: Soneter, LLC
  • Patent number: 8402840
    Abstract: A device for sensing fluid flow within a pipe, which pipe has a pipe wall, is provided. The device includes a sensor housing and a fluid flow meter. The sensor housing includes at least one pressure vessel enclosure and hardware for mounting the enclosure on an exterior surface of the pipe wall. The enclosure includes a base, side walls, and a cap. The enclosure base has a pipe-side surface that mates with the exterior surface of the pipe wall. The enclosure base and the pipe wall have substantially similar resonant frequencies and acoustic impedance. The sensor housing is adapted to be attached to the pipe wall such that the pipe-side surface of the base is mated with the exterior surface of the pipe wall. The fluid flow meter includes a plurality of ultrasonic sensors disposed within the at least one pressure vessel enclosure. Each sensor has a transmitter and a receiver.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: March 26, 2013
    Assignee: Expro Meters, Inc.
    Inventors: Daniel L. Gysling, ChangJiu Dang
  • Publication number: 20130061687
    Abstract: The invention relates to a measuring device for a portable ultrasonic flow measuring system, which measuring device comprises two sensor heads. Each of the sensor heads comprises a sensor housing on which there is provided a sensing surface intended to be placed on or against a measuring tube. An ultrasonic transceiver is provided in each sensor housing for transmitting and receiving ultrasonic waves through the sensing surface. Additionally, the measuring device comprises a control and evaluation device for measuring a transit time difference for ascertaining the velocity of flow of a medium flowing through a measuring tube. Provision is made for each ultrasonic transceiver in the sensor head to be disposed therein parallel to the sensing surface in the sensor housing. The invention further relates to a measuring tube adapted for use with the measuring device of the invention and an information carrier that contains information concerning the measuring tube.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 14, 2013
    Applicant: HYDROSONIC B.V.
    Inventors: Eric Rath, Walter Seybold
  • Patent number: 8348879
    Abstract: A surgical cassette have a rigid fluid channel formed into a rigid plastic component or housing. The piezoelectric crystals of an ultrasonic flow meter are positioned on one side of the fluid channel. The side wall of the fluid channel opposite the piezoelectric crystals is exposed to fluid in the flow channel on its interior side and is exposed to ambient air on its exterior side. The interface between the wall and the air acts as an acoustic reflector for the operation of the ultrasonic flow meter.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: January 8, 2013
    Assignee: Novartis AG
    Inventors: Shawn X. Gao, Nader Nazarifar, Cornelis J. Drost, Yuri M. Shkarlet
  • Publication number: 20120272749
    Abstract: An ultrasonic flow sensor for use in a fluid medium is described. The ultrasonic flow sensor includes at least two ultrasonic converters which are situated in a flow tube offset relative to one another, longitudinally with respect to a flow of the fluid medium. The ultrasonic flow sensor also includes a reflection surface, the ultrasonic converters being set up to exchange ultrasonic signals via simple reflection on the reflection surface. In addition, a deflection device is provided between the ultrasonic converters which is set up to essentially suppress parasitic ultrasonic signals, which are reflected from the reflection surface and which strike the deflection device, by deflection away from the ultrasonic converters.
    Type: Application
    Filed: September 22, 2010
    Publication date: November 1, 2012
    Inventor: Tobias Lang
  • Patent number: 8293176
    Abstract: An example method for detecting an analyte in a sample of a bodily fluid includes the steps of exposing the bodily fluid sample to electromagnetic energy to cause a thermoelastic expansion in the analyte, and detecting a photoacoustic signal in the sample that results from the thermoelastic expansion.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: October 23, 2012
    Assignee: The Curators of the University of Missouri
    Inventors: John A. Viator, Paul S. Dale, Ryan M. Weight, Peter Sutovsky
  • Patent number: 8251944
    Abstract: A surgical cassette have a rigid fluid channel formed into a rigid plastic component or housing. The housing serves as a substrate for an elastomeric acoustic coupling that can be formed on the housing outside of the fluid channel by an over molding process. Such a construction method eliminates the need for adhesives to attach the elastomeric acoustic coupling to the housing and ensures the removal of any air from between the elastomeric acoustic coupling and the housing.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: August 28, 2012
    Assignee: Novartis AG
    Inventors: Mark A. Hopkins, Nader Nazarifar, Jeffrey J. Chun, David L. Williams
  • Patent number: 8234933
    Abstract: An ultrasonic meter may include, but is not limited to, an emitter that emits a series of ultrasonic burst signals towards a fluid containing bubbles and/or particles, the series of ultrasonic burst signals being reflected by the air bubbles and/or particles in the fluid to be a series of reflected signals, a receiver that receives the series of reflected signals, and a calculator that calculates a plurality of correlation coefficients by performing a correlation processing on a series of received signals outputted from the receiver, the calculator calculating a physical quantity of the fluid based on the plurality of correlation coefficients.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 7, 2012
    Assignee: Yokogawa Electric Corporation
    Inventors: Satoshi Fukuhara, Akira Kataoka, Nobuhiro Ukezono, Kohei Izu, Kazutoshi Okamoto