Signal Processing Or Analysis Details Patents (Class 73/861.356)
  • Patent number: 10705055
    Abstract: A measuring transducer comprises two flow dividers having, in each case, two tubular chambers separated from one another and adapted for guiding in- and out flowing fluid, of which each has a chamber floor, in which are formed, in each case, two mutually spaced flow openings communicating with a lumen of the chamber, and as well as a tube arrangement having at least four measuring tubes connected to the flow dividers for guiding flowing fluid with parallel flow. Moreover, the measuring transducer comprises an electromechanical exciter mechanism for exciting mechanical oscillations of the measuring tubes as well as a sensor arrangement for registering oscillatory movements of the measuring tubes and for generating at least two oscillation measurement signals representing oscillations of at least one of the measuring tubes.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: July 7, 2020
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Hao Zhu, Alfred Rieder, Wolfgang Drahm, Michael Kirst
  • Patent number: 10605647
    Abstract: A meter verification method for a vibratory flowmeter (5) is provided, comprising vibrating a sensor assembly (10) of the vibratory flowmeter (5) with a plurality of test tones in a vibration mode using a driver (180), wherein the plurality of test tones is applied substantially instantly, in the absence of a ramp function. A driver (180) current is determined, and response voltage of pickoff sensors (170L, 170R) are determined for the vibration mode. The instantaneous frequency of the pickoff sensor (170L, 170R) signals is measured, and a filter is applied to isolate the response at each of the plurality of test tones. The filter is also applied to the instantaneous frequency measurements. The same delay is applied to the frequency measurements and the response at each of the test tones. A meter stiffness value (216) is generated using the current (230) and the response voltage (231), and proper operation of the vibratory flowmeter (5) is verified using the meter stiffness value (216).
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: March 31, 2020
    Assignee: Micro Motion, Inc.
    Inventors: Matthew Joseph Rensing, Christopher George Larsen, Timothy J. Cunningham
  • Patent number: 10571322
    Abstract: An emitter-sensor assembly (100) for measuring a spatiotemporal relationship between two or more positions of a vibratory element (12) is provided. The emitter-sensor assembly (100) includes an emitter (110) substantially rigidly coupled to a first position (12a) of the vibratory element (12), the emitter (110) configured to emit electro-magnetic radiation (112) towards a second position (12b) of the vibratory element (12), and a sensor (120) substantially rigidly coupled to the first position (12a) of the vibratory element (12), the sensor (120) configured to receive the electro-magnetic radiation (112) reflected from the second position (12b) of the vibratory element (12).
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: February 25, 2020
    Assignee: Micro Motion, Inc.
    Inventor: Martin Andrew Schlosser
  • Patent number: 10503224
    Abstract: A method for operating a flowmeter having at least one diagnostic unit, a counter unit and a storage unit with at least one memory for carrying out a plurality of time-limited measuring operations during which the counter unit determines at least the overall volume of a fluid passing through the flowmeter during one measuring operation. The counter unit is operated for the duration of a time-limited measuring operation, and the diagnostic unit recognizes at least one erroneous or error-free state of the flowmeter. The method ensures a particularly high reliability of the measured values determined during an individual measuring operation by the diagnostic unit generating at least one status message based on the state that is transmitted to the storage unit and stored in the memory, and by several status messages being transmitted and cumulatively stored in the memory at least for the duration of the measuring operation.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: December 10, 2019
    Assignee: KROHNE MESSTECHNIK GMBH
    Inventors: Markus Dabrowski, Helmut Brockhaus
  • Patent number: 10466151
    Abstract: A method is provided for measuring density of a fluid by means of at least one at least sectionally curved measuring tube. The measuring tube is adapted to be flowed through by the fluid and concurrently to be caused to vibrate over a wanted oscillatory length, namely a tube length measured from a first tube end to a second tube end, a length which is greater than a minimum separation of the second tube end from the first tube end. According to the invention, among other things, also a tilt measured value representing an inclination of the at least one measuring tube in the static resting position relative to a local acceleration of gravity is ascertained, in such a manner that such represents an angle of intersection between a direction vector of an imaginary first reference axis (y-axis) and a direction vector of an imaginary second reference axis (g-axis).
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 5, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Gerhard Eckert, Alfred Rieder, Hao Zhu
  • Patent number: 10445527
    Abstract: A system for differential privacy is provided. In some implementations, the system performs operations comprising receiving a plurality of indices for a plurality of perturbed data points, which are anonymized versions of a plurality of unperturbed data points, wherein the plurality of indices indicate that the plurality of unperturbed data points are identified as presumed outliers. The plurality of perturbed data points can lie around a first center point and the plurality of unperturbed data points can lie around a second center point. The operations can further comprise classifying a portion of the presumed outliers as true positives and another portion of the presumed outliers as false positives, based upon differences in distances to the respective first and second center points for the perturbed and corresponding (e.g., same index) unperturbed data points. Related systems, methods, and articles of manufacture are also described.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 15, 2019
    Assignee: SAP SE
    Inventors: Jonas Boehler, Daniel Bernau, Florian Kerschbaum
  • Patent number: 10215605
    Abstract: A sensor assembly for a Coriolis mass flowmeter includes an upstream pipe connection connected to an upstream fluid pipe and a downstream pipe connection connected to a downstream fluid pipe. The sensor assembly installed in a shell of the flowmeter includes a fluid flow pipe, having a fluid input pipe, a fluid output pipe and a double-loop pipe connected in series therebetween; a vibration isolated structure, at least comprising first vibration isolators fixedly arranged on the fluid flow pipe to separate the fluid flow pipe into vibrating pipes and non-vibrating pipes; a weight-increasing structure, arranged on the non-vibrating pipes without contact with the shell; and a connecting structure, fixedly connected to the non-vibrating pipes on one end and to the upstream pipe connection and/or downstream pipe connection on the other to form a flexible connection therebetween.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: February 26, 2019
    Assignees: Chengdu Excenith Technology Co., Ltd.
    Inventor: Fan Luo
  • Patent number: 10012523
    Abstract: A method for operating a Coriolis mass flowmeter having at least one measuring tube, at least one oscillation generator, at least one oscillation sensor and at least one strain sensor. The oscillation generator is actuated with an oscillation excitation signal and the measuring tube is excited to oscillation by the oscillation generator, the oscillation of the measuring tube is detected by the oscillation sensor and an oscillation sensor signal is generated. The strain sensor is mechanically coupled to the measuring tube via a connection. A change of the mechanical coupling via the connection can be determined by the oscillation of the measuring tube being measured by the strain sensor and a strain sensor signal generated representing oscillation of the measuring tube, a correlation between the strain sensor signal and an oscillation signal representing the oscillation of the measuring tube is identified, and a temporal change of the correlation is determined.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: July 3, 2018
    Assignee: KROHNE Messtechnik GmbH
    Inventors: Kourosh Kolahi, Ralf Storm
  • Patent number: 9797758
    Abstract: Method for operating a vortex flowmeter device for measuring the flow of a fluid that flows through a measuring tube in which a baffle is arranged for producing eddies in the fluid. A signal-processing device processes signals of first and sensors produced by pressure fluctuations. A first signal is obtained by multiplication of the signal of the first sensor with a correction factor, and the second signal is obtained by multiplication of the signal of the second sensor with another correction factor such that a wanted signal is obtained from the deviation between the first signal and second signals, and a sum signal is formed from the sum of the first and second signals. A correlation between the wanted signal and the sum signal is determined and the correlation is minimized by variation of the correction factors, whereby same-phase interfering signals superimposed on anti-phase sensor signals are at least minimized.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: October 24, 2017
    Assignee: KROHNE Messtechnik GmbH
    Inventor: Kai Gossner
  • Patent number: 9587971
    Abstract: An exciter associated with a mass flow primary comprises a rigid plate comprising a base, two outer struts, and an inner strut; at least one electromagnet formed over the inner strut; a protection circuit associated with the electromagnet; and an exciter circuit configured to induce a current in said electromagnet in order to cause vibration of said exciter.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: March 7, 2017
    Assignee: Honeywell International Inc.
    Inventors: Xianyong Fan, Chuang Huang, Guokun Song
  • Patent number: 9435695
    Abstract: A method for determining a temperature of a vibrating sensor component (204A, 205A, 205?A) coupled to a conduit (203A, 203B) of a vibrating meter (200) is provided. The method comprises a step of supplying the vibrating sensor component (204A, 205A, 205?A) with a temperature determination signal (313). The method also comprises a step of measuring a resulting signal (314). The method further comprises a step of determining a temperature of the sensor component (204A, 205A, 205?A) based on the temperature determination signal (313) and the resulting signal (314).
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: September 6, 2016
    Assignee: Micro Motion, Inc.
    Inventor: William M Mansfield
  • Patent number: 9279710
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: March 8, 2016
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Patent number: 9200936
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: December 1, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Patent number: 9182265
    Abstract: A liquid level detection device includes a signal source for generating one or more unique signals on low impedance signal electrodes, a lock-in amplifier, and a reference signal directly connecting the signal source to the lock-in amplifier. The unique signals generated by the signal source are connected to one or more low impedance signal electrodes. The low impedance signal electrodes may be positioned at different levels inside the tank so that at any given level of liquid in the tank, each low impedance individual electrode may or may not be in contact with the liquid in the tank. Alternatively, the low impedance signal electrodes may be attached to the external wall of the tank at different levels. An antenna is connected to an input of the lock-in amplifier. The antenna may be placed inside the tank at the lowest level for the liquid, or the antenna may be attached to the outside wall of the tank near the bottom of the tank.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 10, 2015
    Assignee: Diversitech Corporation
    Inventor: Charles Barry Ward
  • Patent number: 9046401
    Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: June 2, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Maria Jesus De LaFuente
  • Patent number: 9021892
    Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: May 5, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Maria Jesus De La Fuente
  • Patent number: 9014997
    Abstract: Drive techniques for a digital flowmeter are described. The drive techniques account for delays caused during digital signal processing of sensor signals that correspond to a motion of a flowtube, as well as drive signals that impart motion to the flowtube. Such delays may be caused by a variety of factors, including delays associated with analog/digital conversion of the signals and/or filtering of the signals. The techniques include open-loop techniques and closed-loop techniques, which can be used separately or together during the start-up and operation of the digital flowmeter.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: April 21, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Mayela E. Zamora
  • Patent number: 8972207
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: March 3, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Patent number: 8965715
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: February 24, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Publication number: 20150013474
    Abstract: A mass flow rate sensor system (200) is provided. The mass flow rate sensor system (200) includes a density meter (202) including a sensor assembly (204a) and a density meter electronics (204b) configured to generate a density measurement of a process fluid. The mass flow rate sensor system (200) further includes a volumetric flow meter (203) including a sensor assembly (205a) and a volumetric meter electronics (205b) configured to generate a volumetric flow rate of the process fluid and in electrical communication with the density meter electronics (204b). A remote processing system (207) is provided that is in electrical communication with only one of the density meter electronics (204b) or the volumetric meter electronics (205b).
    Type: Application
    Filed: March 13, 2012
    Publication date: January 15, 2015
    Applicant: Micro Motion, Inc.
    Inventors: Andrew Timothy Patten, Ruth Galic-Mackall, Anna Pishchulina
  • Patent number: 8887579
    Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: November 18, 2014
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Maria Jesus De La Fuente
  • Patent number: 8892370
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: November 18, 2014
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Publication number: 20140238149
    Abstract: Motion is induced in a conduit such that the conduit vibrates in a major mode of vibration having a major amplitude and a minor mode of vibration having a minor amplitude. The major amplitude is larger than the minor amplitude, the major mode of vibration has a first frequency of vibration and the minor mode of vibration has a second frequency of vibration, and the minor mode of vibration interferes with the major mode of vibration to cause a beat signal having a frequency related to the first frequency of vibration and the second frequency of vibration. The frequency of the beat signal is determined, and the second frequency of vibration is determined based on the determined frequency of the beat signal.
    Type: Application
    Filed: May 2, 2014
    Publication date: August 28, 2014
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Mihaela D. Duta, Michael S. Tombs
  • Patent number: 8776614
    Abstract: First and second ?? modulators convert output signals of two sensors into pulse density signals. First and second LPFs convert the pulse density signals into multi-bit signals. A signal computing module calculates a mass flow rate based on the multi-bit signals. A resonance circuit generates an excitation signal based on the output signals of the sensors. A drive output module amplifies the excitation signal. An exciter excites the measurement tube using an amplified excitation signal. A multiplier amplifies one of the pulse density signals to generate a multi-bit signal. An amplification factor controller controls an amplification factor of the multiplier based on the multi-bit signal. A third ?? modulator converts an amplified signal into a pulse density signal. A DAC generates the excitation signal based on the pulse density signal.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: July 15, 2014
    Assignee: Yokogawa Electric Corporation
    Inventor: Masami Wada
  • Publication number: 20140190274
    Abstract: The present invention relates to an inferential coriolis mass flowmeter characterized by: a power supply (10);a pressure sensor (11) connected to the power supply (10) and a tube of fluid; a current to voltage converter (13) connected to the pressure sensor (11) for converting a current signal from the pressure sensor (11) to a voltage signal; a controller unit (20) including an analogue to digital converter (21) connected to the current to voltage converter (13) for converting analogue signal from the current to voltage converter (13) to a digital signal, and a microprocessor (22) for processing the digital signal from the analogue to digital converter (21) to determine the mass flowrate of the fluid, wherein said microprocessor (22) is embedded with an algorithm to determine the mass flowrate of a fluid according to equation (1): y=0.002x4?0.0218x3+0.0865x2+0.8769x+0.0846 ; a display panel (14) connected to the microprocessor (22); and a transmission circuit (15) connected to the microprocessor (22).
    Type: Application
    Filed: August 17, 2012
    Publication date: July 10, 2014
    Applicant: UNIVERSITI MALAYA
    Inventor: Mahidzal Dahari
  • Patent number: 8725433
    Abstract: A signal processing method, a signal processing apparatus, and a Coriolis flowmeter are capable of always performing measurement with constant precision and performing phase measurement with high filtering performance and a small amount of computation even when a temperature of a fluid to be measured changes, air bubbles are mixed into the fluid to be measured, or the fluid to be measured rapidly changes from a gas to a liquid. The Coriolis flowmeter detects at least one of a phase difference and a vibration frequency proportional to a Coriolis force acting on at least one flow tube or a pair of flow tubes.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: May 13, 2014
    Assignee: Oval Corporation
    Inventors: Hirokazu Kitami, Hideki Shimada
  • Publication number: 20140116156
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Application
    Filed: January 3, 2014
    Publication date: May 1, 2014
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Publication number: 20140116155
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Application
    Filed: January 3, 2014
    Publication date: May 1, 2014
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Patent number: 8695438
    Abstract: A flow measurement system (20) is provided according to an embodiment of the invention. The flow measurement system (20) comprises a vibrating flow meter (400) including at least one flow tube (410) and a driver (420) adapted to apply a biasing force on the flow tube (410). The flow measurement system (20) also comprises a meter electronics (450) configured to generate a drive signal to vibrate the flow tube (410) about a first deflected position (1002), wherein the first deflected position (1002) is offset from a flow tube rest position (1001).
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: April 15, 2014
    Assignee: Micro Motion, Inc.
    Inventors: Paul J Hays, Andrew Stephen Kravitz
  • Patent number: 8700343
    Abstract: A signal processing method for a Coriolis flowmeter including: performing frequency conversion to combine an oscillation frequency to each of two flow rate signals obtained by A/D conversion on input signals of the phase difference and/or the vibration frequency proportional to the Coriolis force acting on the at least one flow tube; measuring a frequency of a composite waveform associated with at least one of the vibration detection sensors; transmitting a control signal based on the measured frequency; controlling so that a sum frequency component or a difference frequency component of a composite component of a composite frequency signal is constant; and measuring phases from a sum signal or a difference signal of each of controlled converted composite frequencies, to thereby obtain a phase difference signal component.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: April 15, 2014
    Assignee: Oval Corporation
    Inventors: Hirokazu Kitami, Hideki Shimada
  • Publication number: 20140090484
    Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
    Type: Application
    Filed: September 23, 2013
    Publication date: April 3, 2014
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Maria Jesus De LaFuente
  • Patent number: 8676518
    Abstract: A signal processing method for a Coriolis flowmeter, the signal processing method including: measuring a frequency of a first digital signal obtained by converting a first input signal from one of a pair of vibration detection sensors into the first digital signal; transmitting a modulatable frequency signal based on the measured frequency of the first digital signal; performing frequency conversion to add or subtract the frequency of the modulatable frequency signal to or from the frequency of the first digital signal; performing frequency conversion to add or subtract the frequency of the modulatable frequency signal to or from the frequency of a second digital signal obtained by converting a second input signal from the other one of the pair of vibration detection sensors into the second digital signal; and measuring a phase difference between (i) the frequency converted first digital signal and (ii) the frequency converted second digital signal.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: March 18, 2014
    Assignee: Oval Corporation
    Inventors: Hirokazu Kitami, Hideki Shimada
  • Patent number: 8676526
    Abstract: Meter electronics (20) for processing sensor signals in a flow meter and for computing mass flow rate, density or volume flow rate includes an interface (201) for receiving a first sensor signal and a second sensor signal and a processing system (203) in communication with the interface (201) and configured to generate a ninety degree phase shift from the first sensor signal with a Hilbert transform and compute a phase difference from the ninety degree phase shift, the first sensor signal and the second sensor signal. A frequency is computed from the first sensor signal and the ninety degree phase shift. A second ninety degree phase shift can be generated from the second sensor signal.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: March 18, 2014
    Assignee: Micro Motion, Inc.
    Inventors: Mark James Bell, Richard L. Maginnis, Craig B. McAnally
  • Patent number: 8676517
    Abstract: A signal processing method for a Coriolis flowmeter including: performing frequency conversion of a first digital signal, the frequency conversion performed on the first digital signal modulating the frequency of the first digital signal so that the frequency of the first digital signal after the frequency conversion is 1/Nth of the frequency of the first digital signal before the frequency conversion, where N is an integer; performing frequency conversion of a second digital signal, the frequency conversion performed on the second digital signal modulating the frequency of the second digital signal so that the frequency of the second digital signal after the frequency conversion is 1/Nth of the frequency of the second digital signal before the frequency conversion; and measuring a phase difference between (i) the frequency converted first digital signal and (ii) the frequency converted second digital signal.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: March 18, 2014
    Assignee: Oval Corporation
    Inventors: Hirokazu Kitami, Hideki Shimada
  • Patent number: 8661914
    Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: March 4, 2014
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Maria Jesus De La Fuente
  • Publication number: 20130333484
    Abstract: Drive techniques for a digital flowmeter are described. The drive techniques account for delays caused during digital signal processing of sensor signals that correspond to a motion of a flowtube, as well as drive signals that impart motion to the flowtube. Such delays may be caused by a variety of factors, including delays associated with analog/digital conversion of the signals and/or filtering of the signals. The techniques include open-loop techniques and closed-loop techniques, which can be used separately or together during the start-up and operation of the digital flowmeter.
    Type: Application
    Filed: May 22, 2013
    Publication date: December 19, 2013
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Mayela E. Zamora
  • Patent number: 8571819
    Abstract: Flowmeters are described in which a sensor signal received from a sensor that is attached to vibratable flowtube, so as to determine properties of a fluid within the flowtube, contains a drive signal component and a Coriolis mode component. The flowmeters are operable to determine drive parameters of the drive signal component, as well as Coriolis parameters of the Coriolis mode component. By analyzing the sensor signal based on the drive signal parameters, and not on the Coriolis signal parameters, the flowmeters are able to provide stable and accurate determinations of the properties of the fluid.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: October 29, 2013
    Assignee: Invensys Systems, Inc.
    Inventor: Manus P. Henry
  • Publication number: 20130213143
    Abstract: A control and measurement system for a coriolis flowmeter having a flowtube, a driver adapted to vibrate the flowtube, and a pair of sensors adapted to generate signals indicative of movement of the flowtube when it is being vibrated by the driver, wherein the sensors are positioned relative to one another so the signals from the sensors are indicative of a mass flow rate of fluid through the flowtube. A digital drive signal generator is adapted to generate a variable digital drive signal for controlling operation of the driver. The digital drive signal generator can be adapted to cause the driver to resist motion of the flowtube during a first time period and amplify motion of the flowtube during a second time period. The digital drive signal generator can also be adapted to initiate motion of the flowtube by sending one or more square wave signals to the driver.
    Type: Application
    Filed: March 29, 2013
    Publication date: August 22, 2013
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Patent number: 8483979
    Abstract: Startup and operational techniques for a digital flowmeter are described. For example, during a startup operation of the flowmeter, the mode of operation might include a random sequence mode, in which filtered, random frequencies are applied as a drive signal to a flowtube associated with the digital flowmeter. Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal. In a digital synthesis mode of operation, the analyzed sensor signals are used to synthesize the drive signal. The digital flowmeter may revert to a previous mode to regain stable and desired oscillation of the flowtube, such as might be required during a recovery operation associated with a disturbance to an operation of the digital flowmeter.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: July 9, 2013
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Mayela E. Zamora
  • Patent number: 8467986
    Abstract: Drive techniques for a digital flowmeter are described. The drive techniques account for delays caused during digital signal processing of sensor signals that correspond to a motion of a flowtube, as well as drive signals that impart motion to the flowtube. Such delays may be caused by a variety of factors, including delays associated with analog/digital conversion of the signals and/or filtering of the signals. The techniques include open-loop techniques and closed-loop techniques, which can be used separately or together during the start-up and operation of the digital flowmeter.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: June 18, 2013
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Mayela E. Zamora
  • Publication number: 20130145863
    Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
    Type: Application
    Filed: June 13, 2012
    Publication date: June 13, 2013
    Applicant: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Maria Jesus De La Fuente
  • Patent number: 8448491
    Abstract: A vibratory flow meter (100) for correcting for an entrained phase in a two-phase flow of a flow material is provided. The vibratory flow meter (100) includes a flow meter assembly (10) including a driver (104) and with the vibratory flow meter (100) being configured to generate a vibrational response for the flow material. The vibratory flow meter (100) further includes and meter electronics (20) coupled to the flow meter assembly (10) and receiving the vibrational response. The meter electronics (20) is configured to generate a measured two-phase density of the two-phase flow using the vibrational response, determine the computed drive power needed by a driver (104) of the flow meter assembly (10), and calculate a density compensation factor using a liquid density of a liquid component of the two-phase flow, an entrained phase density of an entrained phase component, the measured two-phase density, and the computed drive power.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: May 28, 2013
    Assignee: Micro Motion, Inc.
    Inventors: Craig Brainerd Van Cleve, Joel Weinstein
  • Patent number: 8447534
    Abstract: A controller for a flowmeter includes an input module operable to receive a sensor signal from a sensor connected to a vibratable flowtube. The sensor signal is related to a fluid flow through the flowtube. The controller also includes a signal processing system operable to receive the sensor signal, determine sensor signal characteristics, and output drive signal characteristics for a drive signal applied to the flowtube. An output module is operable to output the drive signal to the flowtube and a control system is operable to modify the drive signal and thereby maintain oscillation of the flowtube during a transition of the flowtube from a substantially empty state to a substantially full state.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: May 21, 2013
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, David W. Clarke, James H. Vignos
  • Patent number: 8408073
    Abstract: A microfluidic device and sensing method that utilize a resonating tube configured to have sufficient sensitivity to be capable of sensing the volume of a gas present as bubbles in a liquid or the flow rate and/or density of a gas or gas mixture flowing through the tube. The tube has a freestanding tube portion supported above a surface of a substrate so as to be capable of vibrating in a plane normal to the surface of the substrate. As a gas-containing fluid flows through an internal passage of the tube, a drive signal vibrates the freestanding tube portion at a resonant frequency thereof. Coriolis-induced deflections of the freestanding tube portion are sensed relative to the substrate to produce an output corresponding to the sensed deflections, and the drive signal and/or the output are assessed to determine the volume, density and/or flow rate of the gas of the gas-containing fluid.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: April 2, 2013
    Assignee: Integrated Sensing Systems Inc.
    Inventors: Douglas Ray Sparks, Richard Thayre Smith, Nader Najafi
  • Patent number: 8396674
    Abstract: A vibration-type measuring device includes an exciter arrangement which exerts a time-dependent force with at least one sinusoidal component at an adjustable excitation frequency on a measuring tube, through which a medium can flow, and causes the measuring tube to oscillate. The measuring device includes first and second sensors which are fitted to the measuring tube at different locations. The first and second sensors output first and second measurement signals, respectively. The measuring device includes an evaluation unit which determines a first phase shift between the first and second measurement signals and uses the determined phase shift to determine a measurement variable of the medium. The measuring device includes a phase comparator, which determines a second phase shift between the force and the average value of the first and second measurement signals, and a frequency generator which sets the excitation frequency on the basis of the second phase shift.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: March 12, 2013
    Assignee: ABB Technology AG
    Inventors: Jörg Gebhardt, René Friedrichs, Beat Kramer, Frank Kassubek, Steffen Keller
  • Patent number: 8374805
    Abstract: A Coriolis mass flowmeter includes a vibrator configured to vibrate a measurement conduct line, an upstream sensor and a downstream sensor, which are placed at a certain distance in the measurement conduct line and are configured to detect the vibration of the measurement conduct line, a first effective value reception section configured to receive an effective value of the first signal, a second effective value reception section configured to receive an effective value of the second signal, a ratio computation section configured to receive the effective value of the first signal and the effective value of the second signal and to compute the ratio of both values, and an anomaly diagnosis section configured to make a comparison between the computed ratio and a certain value and to generate an alarm.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: February 12, 2013
    Assignee: Yokogawa Electric Corporation
    Inventors: Akinori Yoshino, Nobuo Miyaji, Akimichi Kadoguchi
  • Patent number: 8347735
    Abstract: A method for operating a flow meter is provided. The flow meter includes a driver and pickoff sensors coupled to a flow tube. The driver is adapted to vibrate the flow tube in response to a drive signal. The method comprises setting a target pickoff voltage and measuring a flow meter temperature. The method further comprises generating a temperature compensated target pickoff voltage and controlling the drive signal to maintain a temperature compensated flow tube amplitude.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 8, 2013
    Assignee: Micro Motion, Inc.
    Inventor: Roger Scott Loving
  • Publication number: 20130000418
    Abstract: Startup and operational techniques for a digital flowmeter are described. For example, during a startup operation of the flowmeter, the mode of operation might include a random sequence mode, in which filtered, random frequencies are applied as a drive signal to a flowtube associated with the digital flowmeter. Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal. In a digital synthesis mode of operation, the analyzed sensor signals are used to synthesize the drive signal. The digital flowmeter may revert to a previous mode to regain stable and desired oscillation of the flowtube, such as might be required during a recovery operation associated with a disturbance to an operation of the digital flowmeter.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 3, 2013
    Applicant: INVENSYS SYSTEMS, INC.
    Inventors: Manus P. Henry, Mayela E. Zamora
  • Patent number: 8342199
    Abstract: An apparatus for dispensing liquid fuel comprises a plurality of inlet valves, each connected in-line with a respective inlet pipe in fluid communication with a respective source of a specific liquid fuel. A plurality of outlet valves are also provided, each connected in-line with a respective outlet pipe. A respective fuel hose is in fluid communication with each of the outlet pipes. The apparatus further comprises a coriolis flow meter located between the inlet valves and outlet valves, the coriolis flow meter providing a flow signal indicative of flow therethrough. A controller is operative to receive the flow signal and control the valves such that selected inputs of specific liquid fuels are dispensed to at least one of the fuel hoses. In accordance with an exemplary embodiment, the selected inputs of specific liquid fuels may include individual liquid fuels and blended combinations thereof.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: January 1, 2013
    Assignee: Gilbarco, Inc.
    Inventors: Jonathan E. Deline, Ryan C. Garrett, Michael C. Liebal, Edward Payne, Brent K. Price, Rodger K. Williams, Zhou Yang
  • Patent number: 8327717
    Abstract: A very high frequency vibratory flow meter (100) is provided. The very high frequency vibratory flow meter (100) includes a flow meter assembly (10) including one or more flow conduits (103A, 103B). The flow meter assembly (10) is configured to generate a very high frequency response that is above a predetermined maximum decoupling frequency for the flow fluid independent of a foreign material size or a foreign material composition. The very high frequency vibratory flow meter (100) further includes meter electronics (20) coupled to the flow meter assembly (10) and configured to receive the very high frequency vibrational response and generate one or more flow measurements therefrom.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: December 11, 2012
    Assignee: Micro Motion, Inc.
    Inventor: Joel Weinstein