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8342results about "Fluid pressure measurement" patented technology
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Method and device for efficient frame erasure concealment in linear predictive based speech codecs
ActiveUS20050154584A1Improve concealmentPromote recoveryError preventionTransmission systemsStability parameterFrequency spectrum
The present invention relates to a method and device for improving concealment of frame erasure caused by frames of an encoded sound signal erased during transmission from an encoder (106) to a decoder (110), and for accelerating recovery of the decoder after non erased frames of the encoded sound signal have been received. For that purpose, concealment / recovery parameters are determined in the encoder or decoder. When determined in the encoder (106), the concealment / recovery parameters are transmitted to the decoder (110). In the decoder, erasure frame concealment and decoder recovery is conducted in response to the concealment / recovery parameters. The concealment / recovery parameters may be selected from the group consisting of: a signal classification parameter, an energy information parameter and a phase information parameter. The determination of the concealment / recovery parameters comprises classifying the successive frames of the encoded sound signal as unvoiced, unvoiced transition, voiced transition, voiced, or onset, and this classification is determined on the basis of at least a part of the following parameters: a normalized correlation parameter, a spectral tilt parameter, a signal-to-noise ratio parameter, a pitch stability parameter, a relative frame energy parameter, and a zero crossing parameter.
Owner:VOICEAGE EVS LLC
Optical sensor and method of operation
InactiveUS6488891B2Analysis using chemical indicatorsTesting/calibration apparatusOptical transducersSample chamber
A multiple single use optical sensor includes a series of continuous sensor stripes deposited on a substrate web. At least one sample chamber is adapted to extend transversely across a discrete portion of the series of sensor stripes to facilitate analysis of a sample disposed therein. The sample chamber may be moved, or additional sample chambers provided to enable subsequent measurements of additional samples at unused discrete portions of the sensor stripes. The continuous nature of the sensor stripes provides consistency along the lengths thereof to enable calibration data obtained from one discrete portion of the sensor stripes to be utilized for testing an unknown sample an other discrete portion of the sensor stripes. This advantageously eliminates the need for any particular discrete portion of the sensor stripes to be contacted by more than one sample, for improved sensor performance.
Owner:SIEMENS HEALTHCARE DIAGNOSTICS INC
System and Method for Gauging Safe Towing Parameters
InactiveUS20130253814A1Digital data processing detailsFluid pressure measurementPull forceDisplay device
A system for determining the tongue weight and total weight of a towed vehicle and other parameters includes a drawbar transducer in one embodiment, a receiver hitch transducer in another embodiment, and a trailer tongue transducer in a further embodiment. Strain gauges are strategically located on the transducer and information regarding the towed vehicle are sent to a display. In one embodiment, a portable display unit, smartphone or the like has a receiver for receiving transmitted data from the transducer reflective of the towed vehicle measured and calculated parameter so that a user can view the tongue weight in practically real time as well as other parameters relating to loading and towing. In this manner, the user can adjust the contents of the towed vehicle to achieve proper tongue weight without the necessity of going back and forth between the trailer and the transducer. A method is also disclosed for determining a safe towing condition based on the trailer tongue weight, trailer pulling force, acceleration during towing, calculated trailer weight, and other factors.
Owner:WIRTHLIN ALVIN R
Method and apparatus for sample analysis
InactiveUS6865926B2Easy to operateAnalysing fluids using sonic/ultrasonic/infrasonic wavesComponent separationParticulatesGas analysis
Methods and systems for analyzing samples, such as gas samples, are described. One method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and analyzing the pneumatically focused gas sample using any of a variety of analytical techniques. Also disclosed are systems for gas analysis, including systems for analysis of pneumatically focused, and thereby concentrated, gas samples and for analysis of particulate matter in gas samples. Analytical systems constructed within personal computer cases also are disclosed.
Owner:PORTLAND STATE UNIV
Medication safety enhancement for secondary infusion
ActiveUS20050145010A1Increase the amount of fluidReduce volume capacityMedical devicesFluid pressure measurementDrugPressure rise
A system and method determine when fluid is not flowing properly from a secondary infusion source during a secondary infusion. The system includes an upstream pressure sensor and a processor programmed to receive signals from the sensor and analyze the signals to determine if secondary fluid flow is proper. The processor samples the output signals from the upstream pressure sensor and analyzes the sampled signals to determine if a pressure rise in the infusion line has occurred when the secondary infusion is initiated. If a pressure rise, indicating that fluid from the secondary container has begun flowing into the infusion line, has not been detected, the processor is programmed to provide a signal indicating that attention should be given to the infusion set up.
Owner:CAREFUSION 303 INC
Sensor equilibration and calibration system and method
InactiveUS6993954B1Ease of evacuationWeighing apparatus testing/calibrationFluid pressure measurementDecreased pressureEngineering
Owner:TEKSCAN
Method for interoperation between adaptive multi-rate wideband (AMR-WB) and multi-mode variable bit-rate wideband (VMR-WB) codecs
ActiveUS20050267746A1Improve classificationImprove methodSpeech analysisFluid pressure measurementBit allocationFull Rate
A source-controlled Variable bit-rate Multi-mode WideBand (VMR-WB) codec, having a mode of operation that is interoperable with the Adaptive Multi-Rate wideband (AMR-WB) codec, the codec comprising: at least one Interoperable full-rate (I-FR) mode, having a first bit allocation structure based on one of a AMR-WB codec coding types; and at least one comfort noise generator (CNG) coding type for encoding inactive speech frame having a second bit allocation structure based on AMR-WB SID_UPDATE coding type. Methods for i) digitally encoding a sound using a source-controlled Variable bit rate multi-mode wideband (VMR-WB) codec for interoperation with an adaptative multi-rate wideband (AMR-WB) codec, ii) translating a Variable bit rate multi-mode wideband (VMR-WB) codecsignal frame into an Adaptive Multi-Rate wideband (AMR-WB) signal frame, iii) translating an Adaptive Multi-Rate wideband (AMR-WB) signal frame into a Variable bit rate multi-mode wideband (VMR-WB) signal frame, and iv) translating an Adaptive Multi-Rate wideband (AMR-WB) signal frame into a Variable bit rate multi-mode wideband (VMR-WB) signal frame are also provided.
Owner:NOKIA TECHNOLOGLES OY
Flow diagnostic system
InactiveUS6907383B2Sampled-variable control systemsFlow control using electric meansMoving averageReal-time clock
A flow diagnostic system for a flow sensing element and impulse lines. A pressure transmitter coupled to the impulse lines provides digital pressure data to a control system. The control system provides the pressure data and real time clock readings to a diagnostic application. The diagnostic application calculates a difference between current pressure data and its moving average. A condition of the primary element or impulse lines is diagnosed from a current pressure data set relative to an historical data set. The diagnostic application is downloadable from an application service provider (ASP). The application can run on the control system, a remote computer or the ASP. A diagnostic report is preferably provided.
Owner:ROSEMOUNT INC
Method for determining pump flow without the use of traditional sensors
ActiveUS20070212210A1Testing/calibration apparatusAmplifier modifications to reduce noise influenceOperating pointMuller's method
A technique for determining pump flow without using traditional sensors features steps and modules for creating a calibrated power curve at closed valve conditions at several speeds; calculating coefficients from a normalized power curve based on a pump's power ratio; and solving a polynomial power equation for flow at the current operating point. The calibrated power curve may be created by increasing the speed of the pump from a minimum speed to a maximum speed and operating the pump with a closed discharge valve. This data is used to correct published performance for shutoff power and best efficiency point power at rated speed in order to determine the pump's power ratio. It is also used to accurately determine closed valve power at the current operating speed. The pump's power ratio is determined by the equation: Pratio=Pshutoff @100% / PBEP<sub2>—< / sub2>corr. The polynomial power equation may, for example, include a 3rd order polynomial equation developed using coefficients from the normalized power versus flow curve, and corrections may be made for speed, hydraulic efficiency and specific gravity in the polynomial power equation. Complex roots may be determined to solve the 3rd order polynomial equation using either Muller's method or some other suitable method, and the calculated actual flow may be determined for a specific operating point.
Owner:ITT MFG ENTERPRISES LLC
Method for interoperation between adaptive multi-rate wideband (AMR-WB) and multi-mode variable bit-rate wideband (VMR-WB) codecs
InactiveUS7203638B2Improve classificationImprove methodSpeech analysisFluid pressure measurementUltra-widebandBit allocation
A source-controlled Variable bit-rate Multi-mode WideBand (VMR-WB) codec, having a mode of operation that is interoperable with the Adaptive Multi-Rate wideband (AMR-WB) codec, the codec comprising: at least one Interoperable full-rate (I-FR) mode, having a first bit allocation structure based on one of a AMR-WB codec coding types; and at least one comfort noise generator (CNG) coding type for encoding inactive speech frame having a second bit allocation structure based on AMR-WB SID_UPDATE coding type. Methods for i) digitally encoding a sound using a source-controlled Variable bit rate multi-mode wideband (VMR-WB) codec for interoperation with an adaptative multi-rate wideband (AMR-WB) codec, ii) translating a Variable bit rate multi-mode wideband (VMR-WB) codecsignal frame into an Adaptive Multi-Rate wideband (AMR-WB) signal frame, iii) translating an Adaptive Multi-Rate wideband (AMR-WB) signal frame into a Variable bit rate multi-mode wideband (VMR-WB) signal frame, and iv) translating an Adaptive Multi-Rate wideband (AMR-WB) signal frame into a Variable bit rate multi-mode wideband (VMR-WB) signal frame are also provided.
Owner:NOKIA TECH OY
System and method for providing high-quality stretching and compression of a digital audio signal
InactiveUS7337108B2Quality improvementImprove intelligibilitySpeech analysisCode conversionCompression methodSelf adaptive
An adaptive “temporal audio scaler” is provided for automatically stretching and compressing frames of audio signals received across a packet-based network. Prior to stretching or compressing segments of a current frame, the temporal audio scaler first computes a pitch period for each frame for sizing signal templates used for matching operations in stretching and compressing segments. Further, the temporal audio scaler also determines the type or types of segments comprising each frame. These segment types include “voiced” segments, “unvoiced” segments, and “mixed” segments which include both voiced and unvoiced portions. The stretching or compression methods applied to segments of each frame are then dependent upon the type of segments comprising each frame. Further, the amount of stretching and compression applied to particular segments is automatically variable for minimizing signal artifacts while still ensuring that an overall target stretching or compression ratio is maintained for each frame.
Owner:MICROSOFT TECH LICENSING LLC
System for sensing the motion or pressure of a fluid
InactiveUS20020078744A1Volume/mass flow by thermal effectsFluid pressure measurementElectricitySurface mounting
A system for sensing or measuring the motion of a fluid such as air. The system typically has a two-part plastic body containing an internal flow passage. The parts of the body may snap together or attach with an adhesive. A transducer or an electronic sensor is typically located within the flow passage, which may measure mass flow rate and may have two resistive thermal devices (RTDs) located on either side of a heat source. The body may have two elongated port tubes configured to attach to tubing. The port tubes may contain venturis, and may be substantially straight and substantially parallel, forming a U shape. A metal lead frame may be provided in electrical communication with the sensor. The lead frame may be integrally molded within the body, and may have a lower coefficient of thermal expansion than the body. The internal flow passage and the sensor may be substantially symmetrical and measure the flow rate of the fluid substantially equally in either flow direction. The system may be configured for surface mounting or for through-hole mounting, and may be a dual in-line type.
Owner:HONEYWELL INT INC
System and method for providing interactive audio in a multi-channel audio environment
InactiveUS6931370B1Low costImprove fidelityFluid pressure measurementPseudo-stereo systemsComputer hardwareVocal tract
DTS Interactive provides low cost fully interactive immersive digital surround sound environment suitable for 3D gaming and other high fidelity audio applications, which can be configured to maintain compatibility with the existing infrastructure of Digital Surround Sound decoders. The component audio is stored and mixed in a compressed and simplified format that reduces memory requirements and processor utilization and increases the number of components that can be mixed without degrading audio quality. Techniques are also provided for “looping” compressed audio, which is an important and standard feature in gaming applications that manipulate PCM audio. In addition, decoder sync is ensured by transmitting frames of “silence” whenever mixed audio is not present either due to processing latency or the gaming application.
Owner:DTS
Method and apparatus for determining component flow rates for a multiphase flow
An apparatus and corresponding method for determining component flow rates of a multiphase fluid in a conduit, the fluid consisting of at least three known components, the method including the steps of: measuring at each of two different positions along the conduit at least four mixture quantities, typically the sound speed, the flow velocity of the multiphase fluid, the pressure and the temperature; providing a speed of sound in each of the components at the measured pressures and temperatures; providing a trial value for each of either the component flow rates or the phase fractions; using a predetermined model to calculate values for the measured mixture quantities based on the trial values for each of either the component flow rates or the phase fractions; using a predetermined error function to determine an error value; and using a predetermined optimizing algorithm to determine whether the calculated values are acceptable, and, if they are not, to provide a new trial value for each of either the component flow rates or the phase fractions. In some applications, the error function is the sum of the squares of the difference between the measured and calculated values at each point.
Owner:WEATHERFORD TECH HLDG LLC
Flowmeter
ActiveUS20090071264A1Interference minimizationReduce the amount requiredFluid pressure measurementTesting/calibration for volume flowElectromagnetic fieldStreamflow
An electromagnetic flowmeter assembly is described in which an excitation field is set up across a flow conduit and electrodes are used to sense the electromagnetic field generated across the flow conduit as a result of interaction between the excitation field and fluid flowing along the flow conduit. The signals obtained from the electrodes are processed, together with stored calibration data, by processing circuitry to determine flow measurements and means is provided for dynamically updating the calibration data.
Owner:ABB LTD
Method and system for calibrating a tire pressure sensing system for an automotive vehicle
InactiveUS6945087B2Eliminate the problemNot subject to easy lossFluid pressure measurementTyre measurementsMobile vehicleEm coupling
A system (10) and method is provided for calibrating a tire pressure monitoring system using an EM transmitter (14). The present invention includes a first pressure sensor coupled to a wheel of an automotive vehicle (12). The EM pressure transmitter (14) is coupled to the pressure sensor (32). The transmitter (14) has a serial number associated therewith. An EM calibration device has a transmitting range. The EM transmitter device has an actuator. When the actuator is activated, a calibration signal (34) is transmitted within the transmitting range. The calibration signal causes the EM pressure transmitter (32) to transmit a serial number. A controller (16) is EM coupled to the pressure transmitter. The controller (16) receives the serial number and associates the serial number with a tire location of the vehicle.
Owner:FORD GLOBAL TECH LLC
Test Battery System and Method for Assessment of Auditory Function
ActiveUS20080194984A1Improve accuracyImprove reliabilityVibration measurement in solidsMaterial analysis using sonic/ultrasonic/infrasonic wavesReflexTest battery
A test battery method and system (10, 100, 200, 225) for use in assessing auditory function (e.g., the screening or diagnosis of impairments, fitting of hearing aids, etc.) is provided which performs one or more auditory tests including, for example, an acoustic reflectance test. Such an acoustic reflectance test may be a reflectance tympanometry test that includes a feedback system to control static pressure in the ear canal. Such acoustic reflectance tests may be used alone or in combination with one or more other auditory tests. Further, for example, such a battery of tests may include middle-ear muscle reflex tests in combination with one or more other auditory or hearing tests.
Owner:SONICOM
Respiratory humidification system
ActiveUS7043979B2Analysing fluids using sonic/ultrasonic/infrasonic wavesVolume/mass flow by thermal effectsEngineering
Owner:FISHER & PAYKEL HEALTHCARE LTD
Method of and apparatus for the elimination of the effects of inertial interference in force measurement systems, including touch-input computer and related displays employing touch force location measurement techniques
InactiveUS20020050984A1Eliminate errorsEasily field-calibratedForce measurementWork measurementDisplay deviceEngineering
A method and apparatus is disclosed, particularly, though by no means exclusively, useful in touch-screen computer CRT display systems and the like, and more generally in other force and / or torque measurement systems, as in weighing and the like, in which (1) lineal and / or rotational acceleration of the system is sensed in response to inertial interference effects such as tilt or movement that introduce errors into the force and / or torque measurements, and / or (2) inertial error correction from the force data itself is obtained, such as derivative order corrections; and such data is used to correct the force and / or torque measurements. A novel calibration technique for deriving appropriately descriptive coefficients to the particular system for the correcting data, is also disclosed.
Owner:3M INNOVATIVE PROPERTIES CO
Method and device for efficient frame erasure concealment in linear predictive based speech codecs
ActiveUS7693710B2Improve concealmentPromote recoveryError preventionTransmission systemsStability parameterFrequency spectrum
The present invention relates to a method and device for improving concealment of frame erasure caused by frames of an encoded sound signal erased during transmission from an encoder (106) to a decoder (110), and for accelerating recovery of the decoder after non erased frames of the encoded sound signal have been received. For that purpose, concealment / recovery parameters are determined in the encoder or decoder. When determined in the encoder (106), the concealment / recovery parameters are transmitted to the decoder (110). In the decoder, erasure frame concealment and decoder recovery is conducted in response to the concealment / recovery parameters. The concealment / recovery parameters may be selected from the group consisting of: a signal classification parameter, an energy information parameter and a phase information parameter. The determination of the concealment / recovery parameters comprises classifying the successive frames of the encoded sound signal as unvoiced, unvoiced transition, voiced transition, voiced, or onset, and this classification is determined on the basis of at least a part of the following parameters: a normalized correlation parameter, a spectral tilt parameter, a signal-to-noise ratio parameter, a pitch stability parameter, a relative frame energy parameter, and a zero crossing parameter.
Owner:VOICEAGE EVS LLC
Single use, self-contained assay device for quantitative and qualitative measurements
InactiveUS20080053222A1ConfidenceReliable resultsFluid pressure measurementSpeed/acceleration/shock instrument detailsMeasurement deviceData acquisition
The invention comprises a single-use, self-contained measuring device, comprising a data entry- and sampling part including a sensor for measuring of physical or chemical property of a foreign substance and a data acquisition part including electronic processing- and storage means, where the parts are integral parts of a packaging, formed of a sheet-like, printable and foldable material, the packaging being designed to enclose and protect the parts contained therein. The packaging may also include various instruments needed to perform a test.
Owner:CYPAK +1
Fiber optic sensor and sensing system for hydrocarbon flow
InactiveUS20060165344A1Improve responsivenessIncrease strainSurveyConstructionsHydrocotyle bowlesioidesEngineering
An assembly senses fluid pressure variations within a passageway along a length of a flowline. A fiber optic cable is disposed axially within the passageway of the flowline. The fiber optic cable experiences a mechanical strain responsive to variations in the fluid pressure of the fluid communicating through the passageway of the flowline along the length of the flowline. The assembly also includes an enhancing layer surrounding the fiber optic cable. The enhancing layer is more responsive to the fluid pressure of the fluid communicating through the passageway of the cable than the fiber optic cable, which enhances the responsiveness of the fiber optic cable to the pressure by magnifying the mechanical strain associated with the fiber optic cable within a particular region of varying fluid pressure. Strain associated with the cable is communicated through back-reflected light.
Owner:GE OIL & GAS UK LTD
Flow testing system for fluid networks
ActiveUS20080281534A1Way accurateEasy to useVehicle testingAerodynamic testingEngineeringData transmission
An apparatus, system, method and kit for testing fluid flow and pressure is provided. The apparatus, system, method and kit include or include the use of a flow unit which is configured to measure flow rate and / or flow velocity when interfaced with a flow valve or hydrant and a pressure unit configured to measure at least residual pressure when interfaced with a test valve or hydrant. At least one of the units is configured to wirelessly send data transmissions to the other unit which is configured to receive such transmissions.
Owner:HURCO TECH
Method for minimally invasive calibration of implanted pressure transducers
This invention relates generally to apparatus and methods for the calibration of implanted pressure transducers. It is an object of several embodiments of the present invention to provide apparatus and methods for the calibration of one or more implanted pressure transducers implanted in the body of medical patients. Various embodiments of the present invention are particularly advantageous because they offer a calibration system that is less invasive than the systems currently available.
Owner:PACESETTER INC
Method for determining pump flow without the use of traditional sensors
ActiveUS7945411B2Testing/calibration apparatusProcess and machine controlOperating pointMuller's method
A technique for determining pump flow without using traditional sensors features steps and modules for creating a calibrated power curve at closed valve conditions at several speeds; calculating coefficients from a normalized power curve based on a pump's power ratio; and solving a polynomial power equation for flow at the current operating point. The calibrated power curve may be created by increasing the speed of the pump from a minimum speed to a maximum speed and operating the pump with a closed discharge valve. This data is used to correct published performance for shutoff power and best efficiency point power at rated speed in order to determine the pump's power ratio. It is also used to accurately determine closed valve power at the current operating speed. The pump's power ratio is determined by the equation: Pratio=Pshutoff @100% / PBEP<sub2>—< / sub2>corr. The polynomial power equation may, for example, include a 3rd order polynomial equation developed using coefficients from the normalized power versus flow curve, and corrections may be made for speed, hydraulic efficiency and specific gravity in the polynomial power equation. Complex roots may be determined to solve the 3rd order polynomial equation using either Muller's method or some other suitable method, and the calculated actual flow may be determined for a specific operating point.
Owner:ITT MFG ENTERPRISES LLC
Paravalvular leak test apparatus and method
An apparatus and method for measuring paravalvular leakage from a prosthetic heart valve in vitro. The apparatus has a pulse chamber pressure vessel and a pulsatile pump. The sewing ring of a prosthetic heart valve is mounted to a mounting member which is affixed to the pressure chamber, and paravalvular leakage from the heart valve is collected and measured.
Owner:ETHICON INC
Use of wheel slip to help identify soft spots
ActiveUS10113929B2Fluid pressure measurementSatellite radio beaconingEngineeringMechanical engineering
Owner:CATERPILLAR PAVING PROD INC
Pressure sensor diagnosis via a computer
InactiveUS6947831B2Reduce stepsLower regenerationAnalogue computers for vehiclesElectrical controlParticulatesDifferential pressure
A method is described for controlling regeneration of a particulate filter based on at least a sensor, such as a differential pressure sensor. Degradation of the sensor is then detected in a variety of ways. One approach takes advantage of the slowly varying flow resistance of the filter compared with the more rapid variations in flow caused by changing engine conditions. Default operation is then taken when a degraded sensor is detected.
Owner:FORD GLOBAL TECH LLC
Method for generating anisotropic resistivity volumes from seismic and log data using a rock physics model
ActiveUS20100326669A1Predictive valueElectric/magnetic detection for well-loggingTesting/calibration apparatusPorosityHydrocarbon exploration
A hydrocarbon exploration method is disclosed for generating anisotropic resistivity models of a subsurface reservoir from seismic and well data using a rock physics model. In one embodiment, the method comprises: selecting wells within a region of interest (101); obtaining a plurality of rock properties (102) and adjusting selected rock parameters (103) in the calibration of the rock physics model at the well locations; inverting porosity and shale content from seismic data (107); propagating the calibrated rock physics model to the region of interest (109) and calculating effective resistivity for the entire region of interest (109). The inventive method also provides for analyzing the uncertainty associated with the prediction of the resistivity volume.
Owner:EXXONMOBIL UPSTREAM RES CO
High purity fluid delivery system
InactiveUS7114517B2Operating means/releasing devices for valvesFlow control using electric meansPlastic materialsPinch valve
A fluid delivery system includes a flow control device and a Coriolis mass flowmeter in fluid communication with the flow control device. The Coriolis flowmeter has a flow-tube made of a high-purity plastic material, such as PFA, making the delivery system suitable for high purity applications. A controller provides a control output signal to the flow control device, which may comprise a pinch valve, so as to vary the flow control device output in response to a setpoint signal and measurement signals received from the flowmeter.
Owner:EMERSON ELECTRIC CO
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