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7380470 |
Ultrasonic flow meter including turbulators
Measuring volume flows or mass flows in the intake system of motor vehicle internal combustion engines plays an important role in reducing harmful emissions. Therefore, an ultrasonic flow meter for...
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7373838 |
Acoustic wave flow sensor for high-condensation applications
An acoustic wave flow sensor includes a piezoelectric substrate and a heater located immediately below the acoustic wave substrate. A heating element can be deposited in association with a...
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7363174 |
Apparatus and method for measuring a fluid flow rate profile using acoustic doppler effect
An apparatus and method for measuring a flow velocity profile of fluid traveling in a pipe or conduit uses an ultrasonic wave transmitted from an ultrasonic wave transducer mounted at an angle on...
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7360447 |
Flow meter having a reflector with spherical-concave surface
The invention relates to a flow meter for liquid or gaseous media, the flow meter has a measuring channel through which the medium flows, at least one inlet channel and at least one outlet channel...
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7343821 |
Device for coupling an ultrasound clamp-on measuring head on the wall of a tube
The invention relates to a device for coupling ultrasound clamp-on throughflow measuring heads to a high-temperature measuring tube. The invention is characterized in that a thin coupling plate is...
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7318355 |
Ultrasonic flow velocity meter and ultrasonic transducer thereof
The invention provides an ultrasonic flow velocity meter that can measure the flow velocity of a fluid over a wide range of degree of contamination with high degree of accuracy. The ultrasonic flow...
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7317659 |
Measurement of air characteristics in the lower atmosphere
Sodar systems and methods for acoustically sounding air are disclosed in which chirps longer than 300 ms—and preferably with durations of tens of seconds—are used along with matched filter...
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7287437 |
Flow meter for fluid or gas-like media
The invention relates to a flow meter for liquid or gaseous media, the flow meter has a measuring channel through which the medium flows, at least one inlet channel and at least one outlet channel...
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7287436 |
Ultrasonic measuring device including a reflection device
An ultrasonic measuring device having at least one ultrasonic transducer, an analyzer circuit, and a reflection surface provided within a flow pipe for a gaseous medium. The first ultrasonic...
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7252015 |
Ultrasonic flow meter including guide elements
The measurement of volume flows or mass flows in the intake system of motor vehicle internal combustion engines plays a significant role in reducing pollutant emissions. Therefore, an ultrasonic...
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7185547 |
Extreme temperature clamp-on ultrasonic flowmeter transducer
A device for measuring flow in a pipe includes a first metal plate mounted to the pipe, the first metal plate including a first contact portion contacting a wall of the pipe and a first away...
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7178408 |
Sodar sounding of the lower atmosphere
A method and system for acoustically sounding the lower atmosphere involves the transmitting of an acoustic chirp and the processing of returned echoes and interference using wavelet and matched...
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7162930 |
Ultrasonic sensor
There are provided an ultrasonic transducer that performs transmission and/or reception of an ultrasonic wave, and a propagation medium portion that forms a propagation path of the ultrasonic wave....
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7140261 |
Acoustic wave flow sensor
An acoustic wave flow sensor is disclosed, which includes a sensor substrate and an acoustic wave diaphragm etched upon the sensor substrate, wherein mechanical stress or strain is concentrated in...
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7077012 |
Wedge and wedge unit for use in ultrasonic doppler flow meter
A wedge unit according to the present invention is used for an ultrasonic Doppler flow meter, being mounted on the outer wall of a pipe in which a fluid flows, supplying an ultrasonic wave to the...
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7032461 |
Flow sensor having a flow indicator having a plurality of light emission sections
A flow sensor comprises a detection section and a main unit section. The detection section comprises a casing, a through water pipe line, a transmitter which transmits an ultrasonic wave, a...
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6983208 |
Method and apparatus for combined measurements of concentration, distribution and flow velocity of suspended solids
A remote sensor and associated data processor, performs concurrent analysis of backscattered signals from a multi-beam acoustic Doppler emitter/receiver positioned against the inside wall of a...
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6931945 |
Doppler ultrasonic flowmeter
A Doppler type ultrasonic flowmeter has an ultrasonic transmitting means for emitting ultrasonic pulses from an ultrasonic transducer into a fluid pipe, a flow velocity profile measuring means for...
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6931944 |
Measuring head for an ultrasonic flowmeter
A measuring head for an ultrasonic flowmeter, in which an ultrasonic coupling element and a measuring head housing are cast together and form, along with casting material, a contact surface E. The...
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6907361 |
Ultrasonic flow-measuring method
An ultrasonic flow-measuring method determines the flow rate of a medium flowing through a line is determined by measuring the runtime of an ultrasonic signal that travels from a first ultrasonic...
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6883386 |
Ultrasonic flow rate measurement instrument
It is an object to provide an ultrasonic flow amount measuring device in which a direction and position of a transducer can be accurately fixed, thereby improving workability such as a reduction in...
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6758100 |
Doppler flowmeter for multiphase flows
There is provided an apparatus for measuring flow rates of multi-phase flows in metal pipes, the apparatus comprising a transceiver generating a pulsed Doppler signal in the range 100 KHz to 10...
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6714482 |
Acoustic doppler channel flow measurement system
An improved acoustic Doppler flow measurement system which employs multiple acoustic frequencies to acquire multiple independent backscatter data from the flow channel, combining the data to enable...
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6696843 |
Device and method for ultrasonic measurement of a fluid flow rate comprising a sigma-delta band pass analog-to-digital converter
An ultrasound apparatus for measuring a fluid flow rate includes a processor which receives an analog signal from a receiver transducer then transforms it into a digitized signal used for...
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6658710 |
Method for fabricating an annular ring transducer
A method is provided for fabricating an annular ring transducers for determining the velocity of a fluid flow. A novel and accurate flow measurement system is fabricated for measuring transit time...
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6622560 |
Ultrasound imaging method and apparatus based on pulse compression technique using a spread spectrum signal
An ultrasound imaging method forms an image of an object using signals reflected from the object after transmitting an ultrasound pulse to the object. In the method, at a first step, a...
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6609430 |
Low profile transducer for flow meters
A low profile transducer ( 11, 12 ) is provided for use in flow meter for pipes of small diameter. The transducer ( 11, 12 ) has a transducer ( 18 ) or other form of transducer which transmits and...
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6601459 |
Method of volumetric blood flow measurement
Method and apparatus to measure in vitro or in vivo the volumetric flow in blood vessels using a pulsed Doppler instrument which allows assessement of crossectional area and mean velocity for...
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6587796 |
Ultrasonic flowmeter
An ultrasonic flowmeter, wherein upstream and downstream receive signals are A/D-converted and thereby the discrete values thereof are determined; a cross-correlation between the upstream and...
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6584860 |
Flow probe insertion gauge
A significant problem in the flow probe art is that of accurately positioning a flow-sensing portion of the probe at a selected location within a pipe. Several arrangements are provided for...
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6575043 |
Method and apparatus for characterizing flows based on attenuation of in-wall propagating wave modes
Methods and apparatus are described that characterize flows within a conduit by generating acoustic waves, and receiving acoustic energy representing at least one in-wall leaky acoustic wave mode....
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6552336 |
Non-invasive, opto-acoustic water current measurement system and method
A method and system are provided for measuring water current. An acoustically-modulated beam of radiation is transmitted to a target location on the surface of a body of water. As the beam transits...
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6544181 |
Method and apparatus for measuring volume flow and area for a dynamic orifice
Techniques are provided for obtaining selected instantaneous area measurements for a dynamic orifice through which blood is flowing in at least one direction, for obtaining instantaneous flow rates...
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6408699 |
Multiple frequency Doppler flow meter
The present invention relates to a method and system for measuring fluid velocity in pipes alternately transmitting two or more ultrasonic frequencies through a pipe wall into a fluid containing...
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6404344 |
Method of compensating for erroneous reading in a mass flow meter
A method of correcting reading of a non-contact solids flow meter measuring solid particulate flow where the solid particulate product enters the flow tube at one end and flows past a sensor and...
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6332360 |
Apparatus for measuring the depth, water velocity or water temperature of an open channel
An apparatus for measuring the depth of water and the water temperature at any point of an open channel by measuring an ultrasonic propagation time transmitted between a plural number of ultrasonic...
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6318179 |
Ultrasound based quantitative motion measurement using speckle size estimation
An ultrasound system determines the relative movement in a first direction (F1) of first matter, such as blood flow, and second matter, such as an artery wall, in a subject under study (S). A beam...
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6295874 |
Apparatus for determining a physical process variable of a medium
An apparatus for determining a physical process variable of a medium (2) which can be used in conjunction with various sensor types, the sensors having in common that they determine a process...
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6259523 |
Optical inspection insertion apparatus for pressurized vessels
An optic device for use in viewing the interior of pressurized vessels, especially high pressure fluid pipelines. Embodiments of the optic device allow manual or automatic insertion/retraction of...
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6216544 |
Ultrasonic flowmeter having reduced phase difference
An ultrasonic flowmeter includes a flow path defined by four wall sections, a flow measurement section, a calculation section and a pair of ultrasonic oscillators for transmitting and receiving an...
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6176143 |
Method and apparatus for estimation and display of spectral broadening error margin for doppler time-velocity waveforms
A method of calibrating Doppler time-velocity waveforms obtained using a duplex ultrasound scanner. A spectral broadening error margin for the maximum velocity waveform is determined based on a...
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6158288 |
Ultrasonic system for measuring flow rate, fluid velocity, and pipe diameter based upon time periods
An ultrasonic flowmeter using ultrasonic pulses transmitted within a pipe containing flowing fluid determines values, including flow rate or fluid velocity of the flowing fluid. The ultrasonic...
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6098466 |
Ultrasonic flow sensor incorporating full flow illumination
An ultrasonic flow sensor probe for measuring fluid (liquid or gas) flow (e.g., blood flow) in vessels or tubes provides decreased sensitivity to flow distribution non-uniformities and decreased...
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6091489 |
Optical inspection apparatus for pressurized vessels
An optic device for use in viewing the interior of pressurized vessels, especially high pressure fluid pipelines. Embodiments of the optic device allow manual or automatic insertion/retraction of...
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6067861 |
Method and apparatus for ultrasonic doppler velocimetry using speed of sound and reflection mode pulsed wideband doppler
According to the present invention, a method and apparatus rely upon tomographic measurement of the speed of sound and fluid velocity in a pipe. The invention provides a more accurate profile of...
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6041662 |
Process and apparatus for the determination of true average peak velocity
A procedure for the determination of the true average peak velocity of particulate laden liquids in a tube, by the use of a Doppler ultrasonic transducer inserted in said tube. The average peak...
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6023968 |
Real-time two-dimensional resistance and pulsatility mapping
A method and apparatus for determining resistance and pulsatility indices of a flow of material, such as the flow of blood in the human body. This may be implemented, for example, in a color flow...
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6003385 |
Ultrasound apparatus for measuring the flow speed of a fluid
The invention relates to ultrasound apparatus for measuring the flow speed of a fluid, the apparatus comprising first and second ultrasound transducers disposed at points that are spaced apart in...
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5986553 |
Flow meter that measures solid particulate flow
A non-contact solids flow meter for measuring solid particulate flow is comprised of a flow tube, a sensor, and an indicator. The product enters the flow tube at one end and flows downward by...
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5969263 |
Ultrasonic fluid counter for attenuating parasitic ultrasonic waves
The invention concerns an ultrasonic fluid counter including at least two ultrasonic transducers collectively defining an ultrasonic measuring path and emitting and receiving ultrasonic waves in...
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