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WO/2000/049419A1 |
A method for obtaining angle of attack from measured pressure values with a probe (10) having angle measuring ports and a pitot port. A table (36) of known values of angle of attack relative to the pressure ratio of measured Mach numbers...
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WO/2000/047952A1 |
The present invention relates to an eddy electromagnetic flowmeter that comprises a duct (1) containing a vortex generating member (2) arranged perpendicularly to the longitudinal axis (13) of said duct. Two measuring electrodes (4, 5) e...
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WO/2000/045131A1 |
An ultrasonic flow meter (110) using ultrasonic pulses transmitted within a pipe (150) containing flowing fluid determines values, including flow rate or velocity of the fluid. The pulses having velocity components either in the upstream...
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WO/2000/041002A1 |
An ultrasonic imaging system for displaying velocity of fluid includes a receiver which demodulates ultrasonic echo signals received by a transducer array from two different positions. The resulting data is organized into frames of data ...
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WO/2000/040435A1 |
A safety display light device with which a car width and a driving speed can be identified without provision of a separate power source and which can function as a safety display light when the device is attached to an automobile, a bicy...
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WO/2000/037910A1 |
The invention relates to a sensor having a signal source for emitting a physical signal and a signal detector mounted at a distance from said signal source for receiving the physical signals in the location of the signal detector. The ph...
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WO/2000/029854A1 |
A three-axis, non-scanning, self-referenced laser air data sensing system (10) comprises a support (12) having three separate laser diodes (56A-56C) providing beams (22A-22C) of coherent light, which beams (22A-22C) are directed toward s...
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WO/2000/026618A1 |
A meter comprises a casing (1) with a fluid passage (2), in which two transducer mountings (3, 4) arranged at a distance (L¿b?) from each other support two transducers (5, 6) which are acoustically opposed to each other. Between the tra...
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WO/2000/019214A2 |
The invention relates to a method for the optical three-dimensional velocimetry of scattered particles. According to said method, a flow field containing the scattered particles is exposed to a laser light sheet continuously over a set p...
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WO/2000/019212A2 |
A miniature laser Doppler probe includes a laser (100), lens (110), another lens (120) with a diffraction grating etched thereon, and a focussing lens (130). The focussing lens (130) focuses the diffraction grating on an interrogation vo...
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WO/2000/016877A1 |
The invention relates to fibrous materials containing a fibrous proportion and, optionally, a particle proportion. The fibrous materials also contain a proportion of one or several active substances for liquid treatment. At least one act...
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WO/2000/014549A1 |
The invention relates to a device for detecting the flow direction of a gaseous mass flow passing through a flow channel, to a corresponding method and to the applications thereof. The invention is characterized in that a unit (4) dividi...
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WO1998033370A9 |
The present invention is related to measurement techniques and can be used, inter alia, in the field of biology to record the dynamics of microscopic objects such as Brownian particles, microorganisms or processes in living tissues. The ...
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WO/2000/008419A1 |
An apparatus (10) for measuring the characteristics of a droplet of a liquid, such as a droplet of ink, includes a laser (12) for generating and projecting a beam of light (14) along a path. The beam is directed into a photodetector (22)...
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WO/2000/006995A1 |
The invention concerns a method for measuring density fluctuations in a fluid. It consists in using an optical property not exploited hitherto by gas metrology, that is the collective diffusion of visible light by the non-uniformity of t...
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WO/2000/003308A2 |
The proposed holographic particle image velocimetry (HPIV) system employs holograms of two time-separated particle fields, illuminated by separate reference beams (606, 608) on a single recording medium (624). 90-degree scattering is uti...
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WO/2000/003249A2 |
The invention relates to a method for non-invasive measurement of the velocity of a gas or a liquid in a test site, comprising the following steps: I) energizing the atoms and/or molecules present in the gas or liquid to an excited atom ...
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WO/2000/003205A1 |
The invention concerns a method for measuring the displacement of a fluid in a conduit, by measuring the transit time of ultrasounds between two transducers (12, 13), in one direction and in the other, characterised in that it consists i...
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WO/2000/002018A1 |
A solid state microanemometer (10) is micromachined from a bonded silicon wafer comprising two silicon layers (12, 14). The microanemometer comprises a first semiconductor wafer (12) doped with an impurity having an upper planar surface ...
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WO/2000/002026A2 |
The present invention relates to an air-pressure sensor which can be used for determining the parameters of an air flow, of a flow of other gases or of liquids as well as the flight parameters of aircraft. This air-pressure sensor compri...
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WO/1999/067629A1 |
A method and apparatus for determining the speed of sound in a gas. An acoustic transmitter is arranged to apply an acoustic signal to the interior of a resonator and an acoustic receiver is arranged to detect the amplitude of the acoust...
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WO/1999/063882A1 |
The invention provides a system for directly imaging and analyzing the movement of individual erythrocytes in blood vessels, the system comprising imaging means (4, 26) for acquiring, within a predetermined time interval from each other,...
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WO/1999/061922A1 |
A fast response thermal anemometer airspeed transducer incorporating a pair of protected electrically heated cylindrical sensing elements in a parallel arrangement that is exposed broadside to the incident airstream in a way to simultane...
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WO/1999/061924A1 |
The invention relates to a Pitot-Static tube including three groups of orifices (2, 5, 6, 10) for determining the total pressure, static pressure and angle of attack, an axially symmetric body (1) and a strut (4) for fastening to pneumat...
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WO/1999/061923A1 |
The invention relates to a Pitot-static tube (14) comprising a body with inlet orifices (15, 16, 17) for determining flow parameters of a surrounding medium, the body comprising a leading edge, a first group of said orifices being provid...
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WO/1999/056135A1 |
A liquid flow meter (1) for directly measuring the velocity of a liquid is disclosed. The liquid flow meter (1) includes a pair of transducers (10, 20) arranged facing each other in a conduit through which the liquid flows. The liquid fl...
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WO1999040410A9 |
The present invention provides methods and apparatuses for determining at least one of a plurality of particle physical characteristics. The particle physical characteristics include particle size, shape, magnetic susceptibility, magneti...
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WO/1999/050675A1 |
The invention concerns a method which consists in using a sensor (2) lighter than the water released from a platform (1), wherein are measured and recorded within the sensor (2), throughout the surfacing trajectory thereof, a) the succes...
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WO/1999/045344A1 |
A flow switch or flow measuring apparatus (10) including a measuring probe adapted to extend into the flow path of a fluid, said measuring probe (15) including two spaced-apart measuring electrodes (21, 22); a power supply having a pair ...
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WO/1999/036762A1 |
Method for measuring the movements of particles and gas bubbles and the concentration of the gas bubbles in a gas-solid system, such as a fluidized bed particle system, thereby treating a selected amount of the particle mass with for exa...
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WO/1999/035519A2 |
A system and process for measuring velocity of a fluid, such as a supersonic gas jet (44), is disclosed. The system employs modulated laser light (14) from a tunable diode laser (12). By modulated it is meant that the laser is dithered. ...
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WO/1999/034222A1 |
A blade-mounted total pressure (BMTP) probe for a rotor blade comprises a base segment and an inlet segment. The base segment includes an interface surface having a planar configuration that is complementary to an aerodynamic surface of ...
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WO/1999/034221A2 |
A method and apparatus for measuring the velocity of a fluid relatively independently of the physical properties of the fluid. This is preferably accomplished by spacing two sensor elements at different distances from a heater element. T...
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WO/1999/032963A1 |
The invented apparatus (1) measures and generates air data indicative of the conditions experienced by an aircraft (17), and includes at least one sensor (2) and an associator (6). The sensor (2) detects air pressure exerted against the ...
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WO/1999/024792A1 |
In keeping with one aspect of this invention, apparatus for measuring the flow of gas in a pipeline includes an optical transmitter, an optical receiver and a processor. The apparatus measures the flow of gas through a generally cylindri...
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WO/1999/022246A1 |
A method and an apparatus for monitoring simultaneously the temperature and velocity of a thermal spray jet. The apparatus has a sensor head directed at the jet, the sensor head having two optical fibers carrying radiation from the jet t...
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WO/1999/022245A1 |
The invention concerns a device for measuring fluid velocity and for measuring stream of solid or liquid particles in fluids or in a vacuum and concerns instrumentation and more particularly an acoustic device for automatically measuring...
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WO1998041876A9 |
An electro-optical aerosol characterizing system includes a continuous wave laser (24) for generating two beams (26a, 26b) in the red wavelength range, intersecting a particle stream (20) at slightly spaced apart locations. A pulsed UV l...
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WO/1999/014561A1 |
The invention pertains to a method, a number of applications thereof and a device for measuring the flow characteristics of a fluid. The suggested system enables measurement of flow characteristics in open channels, in partially filled p...
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WO/1999/013342A1 |
A detecting electrode (78) and a boss section (74) are respectively provided on first and second substrates (70 and 71) so that the electrode (78) and the section (74) can be faced to each other with an intermediary gap, and a measuring ...
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WO/1999/009376A1 |
The invention relates to a device and a procedure for measuring the flow of a gas or gas mixture in a flow channel (7), said device comprising a frame (10), which comprises measuring space (8), a measuring duct (6), which is mounted on t...
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WO/1999/005479A1 |
Method and apparatus for measuring the velocity of a phase of a fluid flow, wherein, to ascertain the time shift required for close correlation of a signal from a first signal transmitter or detector and a signal from a second signal tra...
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WO/1998/057182A1 |
A fluid flow sensor (10) uses lift forces exerted on a plate-like airfoil member (14) to determine the velocity of a fluid flowing past the sensor (10). The member (14) has a pair of spaced, low aspect ratio airfoil elements (18, 20). A ...
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WO/1998/055837A1 |
There is disclosed an electromagnetic flow meter having a measuring tube (2), a device for producing a magnetic field which is arranged perpendicular to the direction of flow through the measuring tube (2), and an electrode arrangement (...
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WO/1998/055839A1 |
Signals to be cross-correlated, particularly signals derived from electrostatic sensors monitoring fluid flow velocities in a power station, are processed and combined prior to cross-correlating to enable more than one flow velocity to b...
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WO/1998/054550A1 |
The invention concerns a method for measuring density and mass flux in dispersed systems with a gas as a liquid phase. To this end, sound velocity in the system is measured both in the direction of flow and against the direction of flow.
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WO/1998/051997A1 |
An offset correcting circuit for encoder which can detect accurate offset values even when the sampling period of a low-speed A/D converter, etc., is long, is hardly affected by noise, and is used for such an encoder that detects an angl...
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WO/1998/052001A1 |
A flowmeter (10) for measuring the velocity of a fluid employs a circuit for producing a magnetic field transverse to the direction of fluid velocity A, thereby inducing a voltage potential in the fluid. At least two electrodes (40), in ...
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WO/1998/049523A1 |
A device and method for accurately measuring small distances using gas flow sensing. The device has both a measurement and a reference gaging conduit, each including a hot-wire anemometer. The differential sensing achieved by use of the ...
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WO/1998/047008A2 |
An air data measurement system (10) includes a device for sensing air pressure outside an aircraft, a pressure transducer (14) in fluid communication with the air pressure sensing means and having a piezoresistive bridge attached on a fl...
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