Petrauskas, 2009 - Google Patents

A study of acoustic echolocation in complex gaseous environments by using acoustic antennas consisting of piezoelectric ceramic transducers in flexural vibration

Petrauskas, 2009

View PDF
Document ID
12663948827416421220
Author
Petrauskas A
Publication year
Publication venue
Ultragarsas/Ultrasound

External Links

Snippet

In this article, acoustic echolocation measurement method for measurements in complex and normal gaseous environments is described in detail. The advantages of this measurement method along with information about improving the characteristics and …
Continue reading at www.ultragarsas.ktu.lt (PDF) (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting, or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by measuring frequency, phaseshift, or propagation time of electro-magnetic or other waves, e.g. ultrasonic flowmeters
    • G01F1/662—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/222—Constructional or flow details for analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by measuring frequency, phaseshift, or propagation time of electro-magnetic or other waves, e.g. ultrasonic flowmeters
    • G01F1/667—Schematic arrangements of transducers of ultrasonic flowmeters; Circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/221—Arrangements for directing or focusing the acoustical waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable

Similar Documents

Publication Publication Date Title
Chen et al. Highly accurate airflow volumetric flowmeters via pMUTs arrays based on transit time
US7624651B2 (en) Apparatus and method for attenuating acoustic waves in pipe walls for clamp-on ultrasonic flow meter
Meynier et al. A multiscale model for array of capacitive micromachined ultrasonic transducers
Chen et al. High-accuracy ultrasonic rangefinders via pMUTs arrays using multi-frequency continuous waves
US20090025487A1 (en) Apparatus and method for attenuating acoustic waves in propagating within a pipe wall
Doody et al. Modeling and characterization of CMOS-fabricated capacitive micromachined ultrasound transducers
US5989190A (en) Passive sensor system using ultrasonic energy
Zhu et al. An ultrasonic flowmeter for liquid flow measurement in small pipes using AlN piezoelectric micromachined ultrasonic transducer arrays
Kang et al. The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air
Kang et al. Two-dimensional flexural ultrasonic phased array for flow measurement
Gao et al. A miniaturized transit-time ultrasonic flowmeter based on ScAlN piezoelectric micromachined ultrasonic transducers for small-diameter applications
Toda Cylindrical PVDF film transmitters and receivers for air ultrasound
Je et al. A stepped-plate bi-frequency source for generating a difference frequency sound with a parametric array
Wang et al. A mathematical model of a piezoelectric micro-machined hydrophone with simulation and experimental validation
Øyerhamn et al. Finite element modeling of ultrasound measurement systems for gas. Comparison with experiments in air
Mousavi et al. Design, simulation, fabrication and testing of ultrasonic gas flowmeter transducer (sensor)
Petrauskas A study of acoustic echolocation in complex gaseous environments by using acoustic antennas consisting of piezoelectric ceramic transducers in flexural vibration
US3803546A (en) Broad band hydrophone
Massaad et al. Design and Proof-of-Concept of a Matrix Transducer Array for Clamp-On Ultrasonic Flow Measurements
JP6149250B2 (en) Ultrasonic flow meter
Gao et al. A Miniaturized Transit-Time Ultrasonic Flowmeter Using PMUTS for Low-Flow Measurement in Small-Diameter Channels
Chen et al. A High-Accuracy in-Air Reflective Rangefinder Via PMUTS Arrays Using Multi-Frequency Continuous Waves
Ivancic et al. MEMS directional underwater acoustic sensor operating in near neutral buoyancy configuration
CA2658849C (en) Apparatus and method for attenuating acoustic waves in propagating within a pipe wall
Kang et al. Flow measurement based on two-dimensional flexural ultrasonic phased arrays