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15543results about "Subsonic/sonic/ultrasonic wave measurement" patented technology
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Acoustic vibration analyzing apparatus and acoustic vibration analyzing method, program for analyzing acoustic vibration, and recording medium, readable by computer, on which program for analyzing acoustic vibration is stored
ActiveUS7401000B2Easy to carryReduce in quantityVibration measurement in solidsVehicle testingAnalysis methodAcoustics
The present invention provides an acoustic vibration analyzing apparatus for carrying out acoustic vibration analysis by picking up data of sounds generated due to rotation of a plurality of gears and data of the number of revolutions of a gear selected from a plurality of gears when a transmission of a vehicle having the plurality of gears operates. The acoustic vibration analyzing apparatus comprises an acoustic vibration calculation portion for analyzing acoustic data in terms of frequency, an order calculation portion for calculating an order in compliance with the specifications of a plurality of gears, a speed calculation portion for calculating the speed of a vehicle, and a display unit for displaying acoustic pressure levels with the order and vehicle speed associated therewith.
Owner:HONDA MOTOR CO LTD
Configurable vibration sensor
InactiveUS7093492B2Vibration measurement in solidsMachine part testingVibration measurementVariable-gain amplifier
A configurable vibration sensor having a sensor circuit, an analog-to-digital converter and a processor is provided. The sensor circuit employs a vibration sensing element and a variable bandwidth filter controllable by the processor. In addition to the variable bandwidth filter, other configurable elements may also be employed in the sensor circuit, including a variable gain amplifier. These configurable elements allow the configurable vibration sensor to be configured for different vibration measurement applications when measuring vibrations from vibrating structures such as machinery and the like.
Owner:MECHWORKS SYST
Transducer and transducer module
InactiveUS20130069483A1Enhanced Haptic FeedbackEnhance propagationMagnetic circuit rotating partsPiezoelectric/electrostriction/magnetostriction machinesTransducerAcoustic propagation
Transducers and transducer modules having the transducers are disclosed. An embodiment discloses a transducer that includes a conductive layer having a U-shaped slit toward its swing end. The slit is configured to enhance a haptic feedback or an acoustic propagation, or adjust a resonant mode.
Owner:CHIEF LAND ELECTRONICS CO LTD
Micromachined ultrasonic transducers and method of fabrication
InactiveUS20040085858A1Decorative surface effectsSemiconductor/solid-state device manufacturingPMUTSilicon nitride
There is described a micromachined ultrasonic transducers (MUTS) and a method of fabrication. The membranes of the transducers are fusion bonded to cavities to form cells. The membranes are formed on a wafer of sacrificial material. This permits handling for fusions bonding. The sacrificial material is then removed to leave the membrane. Membranes of silicon, silicon nitride, etc. can be formed on the sacrificial material. Also described are cMUTs, pMUTs and mMUTs.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Micromachined ultrasonic transducers and method of fabrication
InactiveUS6958255B2Piezoelectric/electrostrictive device manufacture/assemblySubsonic/sonic/ultrasonic wave measurementPMUTSilicon nitride
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Apparatus and methods for multicomponent marine geophysical data gathering
InactiveUS7239577B2Subsonic/sonic/ultrasonic wave measurementFloating cablesGeophoneCubic metre per second
Owner:PGS AMERICA INC
Integrated vibration measurement and analysis system
ActiveUS20140067289A1Reduce hardware complexityReduces data storage requirementVibration measurement in solidsAnalysing solids using sonic/ultrasonic/infrasonic wavesVibration measurementData rate
A vibration data collection system performs an integration or differentiation process on incoming digitized vibration data in real time. The system uses a digital Infinite Impulse Response (IIR) filter running at the input data rate to provide the integration or differentiation function. With this approach, the system reduces hardware complexity and data storage requirements. Also, the system provides the ability to directly integrate or differentiate stored time waveforms without resorting to FFT processing methods.
Owner:COMPUTATIONAL SYST
Acoustic wave touch detecting apparatus
InactiveUS6948371B2Superior in anti-Electromagnetic Interference (EMI) propertiesLow costInput/output for user-computer interactionAcceleration measurement using interia forcesEngineeringAcoustic wave
An FPC is constructed of two FPC branches, and a connection line that connects to a controller. Printed wiring of the connection line includes ten printed wires. The central four printed wires are signal reception wires, which are connected to two converters (sensors). Grounding wires are provided on both sides of the four signal reception wires. Two outer signal wires are provided adjacent to the grounding wires, respectively toward the outsides thereof. Further, two more grounding wires are provided adjacent to the outer signal wires, respectively on the outsides thereof. This construction results in shielding of all of the signal wires. This relationship is maintained in the FPC branches as well.
Owner:ELO TOUCH SOLUTIONS INC
Amplifying ultrasonic waveguides
ActiveUS20070131034A1High magnificationReduce stressUltrasound therapyAnalysing solids using sonic/ultrasonic/infrasonic wavesWaveguideAcoustic impedance
Ultrasonic waveguides having improved velocity gain are disclosed for use in ultrasonic medical devices. Specifically, the ultrasonic waveguides comprises a first material having a higher acoustic impedance and a second material having a lower acoustic impedance.
Owner:PIEZOINNOVATIONS +1
Vibration analysis
ActiveUS20060150738A1Reduce frequencyVibration measurement in solidsMachine part testingElectricityAcoustics
The present invention relates to vibration analysis and in particular, but not limited to, the derivation of multiple types of vibration signals from one vibration signal for vibration analysis. In the preferred method of the invention the vibrations of an object are measured using at least one vibration sensor, wherein the vibration sensor converts vibrations into an electrical vibration signal. The electrical vibration signal is digitised based on a first frequency, wherein the first frequency is selected from a plurality of possible frequency values. A first type of vibration signal is derived from the digitised vibration signal. A second type of vibration signal is then derived from the digitised vibration signal based on a second frequency. The second frequency is rationally determined from, and lower than, the value selected for the first frequency. The invention also provides apparatus for deriving multiple types of vibration signals from one measured vibration signal for vibration analysis.
Owner:MANTHEY DIANE MANT
Vibratory transducer
InactiveUS6920798B2Easy to manufactureEasy to bendMaterial analysis using sonic/ultrasonic/infrasonic wavesWeather/light/corrosion resistanceCross sensitivityStraight tube
The transducer (1) has at least one at least temporarily vibrating flow tube (101) of predeterminable lumen for conducting a fluid. The flow tube (101) communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section (104), ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube (101) has at least one arcuate tube section (101c) of predeterminable three-dimensional shape which adjoins a straight tube segment (101a) on the inlet side and a straight tube segment (101b) on the outlet side. At least one stiffening element (111, 112) is fixed directly on or in close proximity to the arcuate tube segment (101c) to stabilize the three-dimensional shape. By means of the at least one stiffening element (111, 112), the cross sensitivity of the transducer (1) is greatly reduced, so that cross talks from pressure to mass flow signals are minimized and the accuracy of the transducer is improved.
Owner:ENDRESS HAUSER FLOWTEC AG
Amplifying ultrasonic waveguides
InactiveUS8033173B2High magnificationReduce riskUltrasound therapyAnalysing solids using sonic/ultrasonic/infrasonic wavesAcousticsWaveguide
Ultrasonic waveguides having improved velocity gain are disclosed for use in ultrasonic medical devices. Specifically, the ultrasonic waveguides comprises a first material having a higher acoustic impedance and a second material having a lower acoustic impedance.
Owner:PIEZOINNOVATIONS +1
Nodal dynamic data acquisition and dissemination
ActiveUS20160301991A1Efficient measurementConsistent measurementVibration measurement in solidsTransmission systemsNODALData set
Apparatus is provided having a signal processor configured to: respond to stimuli caused by a vibrating machine or structure and capture a sampled data set containing information about the stimuli, including where the stimuli include at least vibration of the vibrating machine or structure; and determine wireless signaling containing a pre-selected subset of information from the sampled data set that can be provided as relevant data that includes a relevant data package / sample, the size of the relevant data package / sample, and computations upon the relevant data package / sample, based upon implementing a data interpretation algorithm that uses a wireless communication capacity or protocol for communication. The apparatus may include a data collector or sensor having the signal processor arranged therein and configured for coupling to the vibrating machine or structure to be monitored.
Owner:ITT MFG ENTERPRISES LLC
Apparatus and methods for multicomponent marine geophysical data gathering
InactiveUS20040042341A1Subsonic/sonic/ultrasonic wave measurementFloating cablesGeophoneCubic metre per second
In one embodiment the invention comprises a particle velocity sensor that includes a housing with a geophone mounted in the housing. A fluid that substantially surrounds the geophone is included within the housing. The particle velocity sensor has an acoustic impedance within the range of about 750,000 Newton seconds per cubic meter (Ns / m<3>) to about 3,000,000 Newton seconds per cubic meter (Ns / m<3>). In another embodiment the invention comprises method of geophysical exploration in which a seismic signal is generated in a body of water and detected with a plurality of co-located particle velocity sensors and pressure gradient sensors positioned within a seismic cable. The output signal of either or both of the particle velocity sensors or the pressure gradient sensors is modified to substantially equalize the output signals from the particle velocity sensors and the pressure gradient sensors. The output signals from particle velocity sensors and pressure gradient sensors are then combined.
Owner:PGS AMERICA INC
Method and apparatus for vibration sensing and analysis
InactiveUS20050011266A1Readily apparentVibration measurement in solidsMachine part testingPeak valueAcoustics
A method and apparatus for sensing and measuring stress waves. The method comprises the steps of: a.) sensing motion, where the motion comprises a stress wave component and a vibration component; b.) separating the stress wave component from the vibration component with a high pass filter to create a signal proportional to the stress wave; c.) amplifying the signal to create an amplified signal; d.) processing the amplified signal with a sample and hold peak detector over a predetermined interval of time to determine peaks of the amplified signal over said predetermined period of time; e.) creating an output signal proportional to the determined peaks of the amplified signal; and, f.) repeating steps d.) and e.). The invention also includes an apparatus for implementing the method of the invention.
Owner:PCB PIEZOTRONICS IMI SENSORS +1
Satellite and ground system for detection and forecasting of earthquakes
InactiveUS6873265B2Low costSignificant comprehensive benefitsSubsonic/sonic/ultrasonic wave measurementEarthquake measurementNatural satelliteWide area
The present invention describes the use of a space-based Extremely Low Frequency (ELF) magnetic field detector in conjunction with ground-based network of ELF magnetic field detectors. In particular, a space based ELF detection system can be used to perform a wide area search and find precursor earthquake signals in both known and unknown earthquake zones, and a ground-based network of ELF detectors can be used to verify that the signals are indeed earthquake generated signals. The use of this invention will minimize cost and manpower necessary to effectuate an accurate and reliable earthquake detection system.
Owner:STELLAR SOLUTIONS
Triboelectric Generators and Sensors
ActiveUS20140338458A1Vibration measurement in solidsForce measurement by measuring frquency variationsRechargeable cellEngineering
A triboelectric power system includes a triboelectric generator, a rechargeable energy storage unit and a power management circuit. The rechargeable energy storage unit is associated to the triboelectric generator. The power management circuit is configured to receive an input current from the triboelectric generator and to deliver an output current corresponding to the input current to the rechargeable battery so that the output current has a current direction and a voltage that will recharge the rechargeable battery.
Owner:GEORGIA TECH RES CORP
Optical-acoustic imaging device
InactiveUS20080119739A1Reduce radiation exposureShorten operation timeMaterial analysis using sonic/ultrasonic/infrasonic wavesSubsonic/sonic/ultrasonic wave measurementGratingRadiation exposure
The present invention is a guide wire imaging device for vascular or non-vascular imaging utilizing optic acoustical methods, which device has a profile of less than 1 mm in diameter. The ultrasound imaging device of the invention comprises a single mode optical fiber with at least one Bragg grating, and a piezoelectric or piezo-ceramic jacket, which device may achieve omnidirectional (360°) imaging. The imaging guide wire of the invention can function as a guide wire for vascular interventions, can enable real time imaging during balloon inflation, and stent deployment, thus will provide clinical information that is not available when catheter-based imaging systems are used. The device of the invention may enable shortened total procedure times, including the fluoroscopy time, will also reduce radiation exposure to the patient and to the operator.
Owner:PHYZHON HEALTH INC
Method for detecting vibrations in a biological organism using real-time vibration imaging
InactiveUS20060209631A1Vibration measurement in solidsMaterial analysis by observing immersed bodiesUltravioletDetector array
The present invention provides a method for detecting vibration information by receiving electromagnetic radiation reflected or emitted from a biological organism at a light amplitude modulation detector array to provide real-time imaging of the target object. The detected radiation may be visible light, infrared or ultraviolet radiation, and / or of other desired frequency ranges. The detected radiation is preferably AC-coupled to isolate components relating to oscillations of the biological organism from components relating to ambient radiation, e.g. background sunlight. The isolated oscillations may then be digitized, stored, and subjected to processing such as a Fourier transform to generate outputs representative of frequencies of oscillation. This output can then be used for analysis of the target object.
Owner:SRI INTERNATIONAL
Capacitive micromachined ultrasound transducer and methods of making the same
InactiveUS20070180916A1Electrical transducersMaterial analysis using sonic/ultrasonic/infrasonic wavesCapacitanceUltrasonic sensor
A method of making a capacitive micromachined ultrasound transducer cell is provided. The method includes providing a carrier substrate, where the carrier substrate comprises glass. The step of providing the glass substrate may include forming vias in the glass substrate. Further, the method includes providing a membrane such that at least one of the carrier substrate, or the membrane comprises support posts, where the support posts are configured to define a cavity depth. The method further includes bonding the membrane to the carrier substrate by using the support posts, where the carrier substrate, the membrane and the support posts define an acoustic cavity.
Owner:GENERAL ELECTRIC CO
Configurable vibration sensor
InactiveUS20050204820A1Vibration measurement in solidsMachine part testingVibration measurementAudio power amplifier
A configurable vibration sensor comprising a sensor circuit, an analog-to-digital converter and a processor, where each sensor circuit comprises a vibration sensing element and a variable bandwidth filter controllable by the processor. In addition to the variable bandwidth filter, other configurable elements may also be employed in the sensor circuit, including a variable gain amplifier. These configurable elements allow the configurable vibration sensor to be configured for different vibration measurement applications when measuring vibrations from vibrating structures such as machinery and the like.
Owner:MECHWORKS SYST
System and Method for Real-Time Monitoring and Failure Prediction of Electrical Submersible Pumps
ActiveUS20070252717A1Simple and user-friendly mechanismFail to accuratelyElectric/magnetic detection for well-loggingConstructionsReliability engineeringSubmersible pump
A system and method for real-time monitoring and failure prediction of electrical submersible pumps.
Owner:SCHLUMBERGER TECH CORP
High contrast optoacoustical imaging using nonoparticles
InactiveUS20050175540A1Maximize both the optical absorbanceIncrease the effective absorbanceUltrasonic/sonic/infrasonic diagnosticsSurgeryNanoparticleSpherical shaped
A method of enhancing detection for a specific object in a body. A nanoparticulate is administered to the body for location in an area to be explored for detection of the object, if present. The nanoparticulate is at least partially metallic, has a formed non-spherical shape having a minimal characteristic dimension in the range from about 1 to about 3000 nanometers, and has a formed composition capable of producing thermal pressure either in the nanoparticulate or in the object greater than the object could produce in the absence of the nanoparticulate. Electromagnetic radiation is directed into the body. The electromagnetic radiation has a specific wavelength or spectrum of wavelengths in the range from 300 nm to 300 mm selected so that the wavelength or wavelength spectrum is longer by a factor of at least 3 than the minimum characteristic dimension of the nanoparticulate. The nanoparticulate absorbs the electromagnetic radiation more than would one or more non-aggregated spherically shaped particles of the same total volume with a composition identical to the nanoparticulate. The nanoparticulate produces an enhanced optoacoustic signal resulting from the absorption that is received and converted into an electronic signal and presented for assessment of the at least one parameter by a human or a machine
Owner:SENO MEDICAL INSTR
Abnormality diagnosis system for machinery
ActiveCN1926413ALow costSave spaceSubsonic/sonic/ultrasonic wave measurementMachine bearings testingDifferential coefficientMoving average
An abnormality diagnosis system for machinery comprises an envelope processing section (103) for determining the envelope of a detection signal, an FFT section (104) for converting the envelope into a frequency spectrum, a peak detecting unit (105) in which the frequency spectrum is smoothed by the moving average method, the resultant spectrum is subjected to a smoothed differentiation, frequency points at which the sign of differential coefficient changes from positive to negative are detected as peaks, peaks higher a predetermined threshold are extracted and sorted, and the higher ones are detected as peaks, and a diagnosis section (T) for performing abnormality diagnosis on the basis of the detected peaks.
Owner:NSK LTD
Optical waveguide vibration sensor for use in hearing aid
InactiveUS20060107744A1Improve hearingVibration measurement in solidsRecord carriersPolymer optical waveguideLoudspeaker
A directionally-sensitive device for detecting and processing vibration waves includes an array of polymeric optical waveguide resonators positioned between a light source, such as an LED array, and a light detector, such as a photodiode array. The resonators which are preferably oriented substantially perpendicularly with respect to incoming vibration waves, vibrate when a wave is detected, thus modulating light signals that are transmitted between the light source and the light detector. The light detector converts the modulated light into electrical signals which, in a preferred embodiment, are used to drive either the speaker of a hearing aid or the electrode array of a cochlear implant. The device is manufactured using a combination of traditional semiconductor processes and polymer microfabrication techniques.
Owner:RGT UNIV OF CALIFORNIA
Method and device for monitoring status of mechanical equipment and abnormality diagnosing device
An abnormality-diagnosing device is used to diagnose if a bearing device used on the axle of a railway vehicle is normal. The abnormality-diagnosing device comprises a detection processing part, an operation processing part, a result output part and a control processing part, wherein, the detection processing part outputs the signal generated by the bearing device, which is regarded as an electric signal, the operation processing part conducts an abnormality diagnosis on the bearing device according to the output of the detection processing part, the result output part outputs the judgement result of the operation processing part, and according to the judgement result, the control processing part returns a control signal to the control system of the railway vehicle.
Owner:NSK LTD
Capacitive micromachined ultrasonic transducer array with through-substrate electrical connection and method of fabricating same
InactiveUS20060075818A1Improve utilization efficiencyImprove device performanceMaterial analysis using sonic/ultrasonic/infrasonic wavesSubsonic/sonic/ultrasonic wave measurementCapacitanceCapacitive micromachined ultrasonic transducers
The embodiments of the present invention provide a CMUT array and method of fabricating the same. The CMUT array has CMUT elements individually or respectively addressable from a backside of a substrate on which the CMUT array is fabricated. In one embodiment, a CMUT array is formed on a front side of a very high conductivity silicon substrate. Through wafer trenches are etched into the substrate from the backside of the substrate to electrically isolate individual CMUT elements formed on the front side of the substrate. Electrodes are formed on the backside of the substrate to individually address the CMUT elements through the substrate.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Methods for vibration online monitoring and fault diagnosis of power transformer
InactiveCN101709995ASafe and stable operationImprove accuracyThermometer detailsSubsonic/sonic/ultrasonic wave measurementSignal conditioningEngineering
The invention discloses a method for vibration online monitoring and fault diagnosis of a power transformer. The surface vibration of an oil tank of a transformer, the voltage, the current and the oil temperature of the transformer, and the switching values reflecting the on-states of a vibration source fan and the oil tank of the transformer are taken as basic monitoring parameters to be monitored; after signal conditioning is performed on the monitoring parameters, continuous synchronous waveform data sampling, processing and saving are performed; then the processed waveform data are continuously displayed in real time; signal decomposition, multi-parameter correlation analysis and characteristic vector magnitude extraction are performed on the waveform data; and then various characteristic vector thresholds of a specific transformer are compared to analyze and diagnose the operating state and the fault of the transformer. With the method, the operating state of the power transformer can be monitored in real time, and early warning as well as the analysis and the diagnosis of the fault condition of the transformer are provided, thus guaranteeing the secure and stable operation of the transformer.
Owner:ZHEJIANG UNIV
Optical sensing system
InactiveUS6591025B1Improve business performanceRadiation pyrometryVibration measurement in fluidElectrical conductorOptical sensing
A fiber optic acoustic sensor system including an optical conductor having low reflectivity mirrors is provided. Optical sensors are provided by sections of the optical conductor bounded by pairs of the low reflectivity mirrors. Pulses of light are injected into the optical conductor and reflected by the low reflectivity mirrors. The reflected pulses of light are processed using a compensating interferometer to generate interference patterns representative of the environmental conditions acting upon the optical conductor.
Owner:ION GEOPHYSICAL CORP
Optical fiber pressure and acceleration sensor fabricated on a fiber endface
InactiveUS20050062979A1Subsonic/sonic/ultrasonic wave measurementFluid pressure measurement by electric/magnetic elementsJet engineClassical mechanics
A fiber optic sensor has a hollow tube bonded to the endface of an optical fiber, and a diaphragm bonded to the hollow tube. The fiber endface and diaphragm comprise an etalon cavity. The length of the etalon cavity changes when applied pressure or acceleration flexes the diaphragm. The entire structure can be made of fused silica. The fiber, tube, and diaphragm can be bonded with a fusion splice. The present sensor is particularly well suited for measuring pressure or acceleration in high temperature, high pressure and corrosive environments (e.g., oil well downholes and jet engines). The present sensors are also suitable for use in biological and medical applications.
Owner:VIRGINIA TECH INTPROP INC
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