Способ определения скорости потока жидкости или газа

Изобретение относится к оптическим методам для измерения полей скорости плоских течений жидкостей или газов или двух компонент пространственных течений жидкостей или газов, использующим способ визуализации. В способе определения скорости потока жидкости или газа в качестве маркера потока используется легко регистрируемая «жидкая частица», а кросскорелляционный анализ и сопутствующая математическая обработка заменяются непосредственным визуальным выделением и идентификацией «жидкой частицы». Технический результат заключается в обеспечении безопасного режима работы, имеющего простую реализацию, сохраняя при этом возможность исследовать двумерные течения жидкостей или газов в большом динамическом диапазоне измерения скорости. 2 з.п. ф-лы, 2 ил.

ИОННО-МЕТОЧНЫЙ ИЗМЕРИТЕЛЬ СКОРОСТИ ВОЗДУШНОГО ПОТОКА

... 1. Ионно-меточный измеритель скорости воздушного потока, содержащий последовательно соединенные измерительный преобразователь и блок обработки сигнала, выход которого связан с модулем беспроводной передачи данных и модулем регистрации и хранения данных, отличающийся тем, что измерительный преобразователь выполнен в виде проточного канала, в котором последовательно по ходу воздушного потока размещены разрядник генератора ионных меток и два электрода регистратора ионных меток, при этом разрядник генератора ионных меток подключен к генератору высоковольтных импульсов, вход которого связан с блоком обработки сигнала, а электроды регистратора через предварительные усилители связаны с дифференциальным усилителем, выход которого через последовательно соединенные интегратор и компаратор подключен к блоку обработки сигнала.2. Ионно-меточный измеритель скорости воздушного потока по п. 1, отличающийся тем, что электроды регистратора ионных меток выполнены в виде металлических колец в диэлектрической ...

СПОСОБ ИДЕНТИФИКАЦИИ ПЕРЕМЕННОГО МОРСКОГО ТЕЧЕНИЯ ПО ДАННЫМ РАДИОЛОКАЦИОННЫХ НАБЛЮДЕНИЙ

FIELD: measuring equipment. SUBSTANCE: method is based on the observational analysis by the multi-frequency dualpolarized super-high-frequency radar, which sends out and receives the scattered by the surface radio signal on two coaxial polarizations (same-sense polarizations) - HH (signal sending and reception on the horizontal polarization) and VV (signal sending and reception on the vertical polarization) - and on several operation frequencies within the range from 1 GHz to 20 GHz spread out in size no fewer than twice. The method is applicable within the conditions of the medium winds at the observation angle of 20-80° from the vertical line from the piled foundations or crafts. EFFECT: identification of the time and over a distance varying sea currents that are usually connected to the progressive internal waves by scales of around hundreds of metres - units of kilometres. 1 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 634 592 C1 (51) МПК G01S 13/88 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016146730, 29.11.2016 (24) Дата начала отсчета срока действия патента: 29.11.2016 01.11.2017 Приоритет(ы): (22) Дата подачи заявки: 29.11.2016 (45) Опубликовано: 01.11.2017 Бюл. № 31 2109304 C1, 20.04.2015. RU 2556324 C1, 10.07.2015. RU 135117 U1, 27.11.2013. JP 2009222465 A, 01.10.2009. CN 102353946 A, 15.02.2012. US 8159388 B2, 17.04.2012. R U (54) СПОСОБ ИДЕНТИФИКАЦИИ ПЕРЕМЕННОГО МОРСКОГО ТЕЧЕНИЯ ПО ДАННЫМ РАДИОЛОКАЦИОННЫХ НАБЛЮДЕНИЙ (57) Реферат: Изобретение относится к радиолокационным который излучает и принимает обратно методам изучения водной поверхности с целью рассеянный поверхностью радиосигнал на двух обнаружения переменных течений. Достигаемый соосных поляризациях (ко-поляризациях) - НН технический результат заключается в том, что (излучение и прием сигнала на горизонтальной способ позволяет идентифицировать переменные поляризации) и VV (излучение и прием сигнала во времени и пространстве ...

VORRICHTUNG ZUR MESSUNG DER GESCHWINDIGKEIT EINES MIT NIEDRIGER GESCHWINDIGKEIT IN EINER LEITUNG STROEMENDEN FLUESSIGEN METALLES.

SENSOR ZUR DETEKTION ZUFAELLIGER, ZUR KORRELATIVEN SIGNALVERARBEITUNG GEEIGNETER SIGNALE

METHOD AND APPARATUS FOR DETERMINING THE FLOWING PROPERTIES OF A FLUID

Device for simultaneous measurement of wind direction and wind speed

Published without abstract.

Anordnung und Einbausatz zur Messung der Geschwindigkeit einer in einem Zylinder eines Motors rotierenden Luftströmung

Bulk material transport velocity measurement - involves HF transmitter housed in capsules mixed with goods

The system measures the transport velocity of bulk material. HF radio transmitters are inserted in strong plastics capsules which are filled with ballast to match the size and weight of the bulk granules. These are mixed with the bulk material and fixed detectors register the capsules in the moving stream to determine the transport velocity. The capsules are retrieved by a portable highly sensitive receiver with an optical or acouster indicator. The velocities of freely falling, sliding or transported bulk material are accurately and simply determined.

STROEMUNGSMESSVORRICHTUNG

A flow measurement device for testing medical infusion devices comprises an upright tube 11 into which a flow to be measured is directed. The height of the liquid in the tube is sensed continuously throughout the entire length of the tube by a photo-electric strip, or by an array of closely spaced CCD sensors 14, responsive to a strip light 12. A logic arrangement 17 determines when the height of liquid in the tube changes, and triggers a calculation of rate of rise and flow rate. There can be two tubes with the flow switched between them, so that measurement can continue whilst one tube is emptying. Alternatively, the height of the liquid may be determined by measuring the capacitance between a central metal electrode and a conductive coating on the tube. ...

Method and apparatus for monitoring the flow of mixtures of fluid in a pipe

Speed indicating system

A speed indicating system includes a lamp 20 and lenses 22 and 24 to project a directional light beam 26 across a ship's path 2. An endless slide 28 extends round the lamp 20 and the lens 22. This slide has alternate red and green strips, and the slide part 30 is driven across the beam 26 between the lenses 22 and 24 by variable speed pulse motors. When a ship is traversing the beam 26, the pilot adjusts the movement of the slide 28 until the flashing of the strips ceases. The pilot then reads out the ship's speed on a calibrated scale. In another method, the slide 28 is driven through a sequentially repeated stepped speed range. When the ship's pilot sees a fixed light he reads the ship's speed on a visual readout.

Analysis of fluids

A method and apparatus are provided for analysing a fluid, especially an oil/water/gas mixture of unknown composition flowing in a pipeline (10). The apparatus can operate remotely, for example on the sea bed. A gamma-ray source (12) and a diametrically arranged scintillator (20) enable the density to be determined; while a fast neutron source (14) and a diametrically arranged germanium gamma spectrometer (22) cooled by a cryo-cooler (26) enable the concentrations of the elements present to be determined. The apparatus also includes a pulsed fast neutron source and a gamma detector to determine the flow velocity of the fluid. The apparatus enables the weight fractions of oil, water and gas to be derived.

SPEED MEASURING DEVICE.

ULTRASONIC ANEMOMETER

In the ultrasonic anemometer, ultrasonic emitting probes and receiving probes are mounted to define at least three different paths for propagation of ultrasonic signals in the air, and circuitry is provided for measuring the ultrasonic signal propagation time along the different paths and for calculating the direction and the speed of the wind based upon these measurements. The emitting and receiving probes are low frequency probes, the emitting probes producing a predetermined wave train type signal of frequency between 10 and 200 kHz: and the measuring and calculating circuitry measure propagation time by correlation between the emitted and received signals.

METHOD AND SYSTEM FOR COLLECTING AIR DATA USING A LASER-INDUCED PLASMA CHANNEL

A method of measuring air data of an aircraft is provided. The method includes emitting, by a laser disposed on the aircraft, laser light into air outside the aircraft, the laser tuned to induce a laser-induced plasma channel (LIPC) in the air. The method also includes sensing, by a sensor system disposed on the aircraft, at least one property of the LIPC. The method further includes computing, by a computing device disposed on the aircraft, the air data of the aircraft based on the at least one property of the LIPC.

Method for Measuring the Velocity of Water Flow Through Nested Conduits

Einrichtung zum Messen der Durchflussmenge eines durch einen Kanal strömenden Mediums.

Method for determining the average rate of flow of bulk material

ARRANGEMENT FOR THE CONTACTLESS MEASUREMENT OF THE SPEED OF A MOVED MEDIUM.

ARRANGEMENT FOR THE COLLECTION OF RAEUMLICHER INHOMOGENEITIES IN A DIELECTRIC.

PROCESS AND DEVICE FOR Of FLOW AND PROPORTION the VELOCITY MEASUREMENT OF VOLUME OF GASES INCLUDED IN a MOLTEN METAL CURRENT

DISPOSITIF ET PROCEDE POUR LA DETERMINATION DE CARACTERISTIQUES D'ECOULEMENT D'UN FLUIDE

LE DISPOSITIF EST DU TYPE DE CEUX QUI COMPRENNENT ESSENTIELLEMENT DEUX CAPTEURS DIFFERENTIELS 3, 4 FOURNISSANT CHACUN UN SIGNAL DE SORTIE REPRESENTATIF DE LA DIFFERENCE, ENTRE DEUX POINTS SENSIBLES, D'UNE GRANDEUR PHYSIQUE, CETTE DIFFERENCE SUBISSANT DES VARIATIONS DYNAMIQUES LIEES A L'ECOULEMENT. CHAQUE CAPTEUR DIFFERENTIEL EST UN TRANSDUCTEUR DE PRESSION DIFFERENTIELLE ET LES VARIATIONS DYNAMIQUES SONT CONSTITUEES PAR DES FLUCTUATIONS INSTANTANEES DE GRADIENT DE PRESSION ENTRE LES DEUX POINTS SENSIBLES 3A, 3B ET 4A, 4B D'UN MEME TRANSDUCTEUR. CE DISPOSITIF SUPPORTE DES CONDITIONS D'UTILISATION SEVERES, ET EST NOTAMMENT ADAPTE A LA MESURE DE VITESSES D'ECOULEMENT DANS DES ECOULEMENTS DE TYPES TRES DIFFERENTS.

DEVICE FOR DETECTING SPATIAL HETOROGENEITIES IN A DIELECTRIC

Spatial cross-correlating velocimeter

System and device for determining particle characteristics

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, magnetic label density, charge separation, dielectric constant, and derivatives thereof. The method includes generating a region of space having a substantially constant force field, determining the velocity of at least one particle within the region by identifying and locating the particle and its coordinates in at least two temporally defined digital images, and determining the particle physical characteristics from the determined velocity and a predetermined force field magnitude and direction. A device for determining one or more particle physical characteristics is described which has a force field device for subjecting at least one particle to at least one force field, a substantially transparent flow channel, and a computer system for gathering and analyzing ...

METHOD AND SYSTEM FOR DETERMINING THE VELOCITY OF A MOVING FLUID SURFACE

A method for determining the velocity of a moving fluid surface, which comprises the following steps S1 to S5: S1) taking a sequence of images of the moving fluid surface by at least one camera; S2) comparing a first image from the sequence with a second image from the sequence in order to distinguish moving patterns of the fluid surface from non-moving parts and to obtain a first processed image (im_1f) comprising the moving patterns; S3) comparing a third image from the sequence with a fourth image from the sequence in order to distinguish moving patterns of the fluid surface from non-moving parts and to obtain a second processed image (im_2f) comprising the moving patterns; S4) comparing the first and second processed images in order to determine the spatial displacements of the moving patterns; and S5) determining from the spatial displacements the velocity.

METHOD FOR DETERMINING WIND SPEED AND PLANT FOR PERFORMING SAID METHOD

The invention relates to a method for determining a wind speed in a plant (1) having at least two wind turbines (2) spaced apart from one another. In order to determine the wind speed with high accuracy, it is provided according to the invention that an occurrence of a change in the local wind speed is detected for the at least two wind turbines (2), whereupon at least one time difference by which the local changes at the at least two wind turbines (2) are offset is determined, whereupon the wind speed is determined based on the time difference and a distance (3) between the wind turbines (2). In addition, the invention relates to a plant (1) having at least two wind turbines (2) spaced apart from one another.

Измеритель скорости воздушного потока для систем вентиляции

Полезная модель относится к устройствам для измерения скорости воздушного потока, преимущественно, в воздуховодных каналах систем вентиляции и кондиционирования воздуха. Техническим результатом заявленной полезной модели является расширение арсенала средств измерения скорости воздушного потока в воздуховодах систем вентиляции с высокими метрологическими и эксплуатационными характеристиками, удовлетворяющих конструктивно-компоновочным требованиям. Полезная модель представляет собой измеритель скорости воздушного потока, содержащий штангу, закрепленный на ней проточный канал, два разнесенных по направлению потока приемопередатчика, связанных с электронным блоком, при этом проточный канал имеет шарнирное соединение со штангой с возможностью их соосного расположения в нерабочем состоянии измерителя и фиксирования их под прямым углом один к другой в рабочем состоянии измерителя, причем проточный канал в рабочем состоянии расположен ниже по потоку по отношению к штанге и содержит первый приемопередатчик ...

Регистратор температуры и скорости нестационарного газового потока

Изобретение относится к измерительной технике и может быть использовано для определения температуры нестационарного газового потока, теплового импульса потока, скорости движения фронта теплового возмущения, зависимости скорости движения фронта теплового возмущения от расстояния до источника его возникновения. Заявлен регистратор температуры и скорости нестационарного газового потока, который содержит информационный датчик и блок измерения, который состоит из аналого-цифрового преобразователя, блока памяти, генератора тактовой частоты, N-аппаратно-программных каналообразующих модулей, микроЭВМ, аппаратно-программного модуля контроля внутренних питающих напряжений, блока измерения параметров окружающей среды, супервизора, радиотрансивера, com-порта, источника эталонных напряжений. При этом информационный датчик состоит из N-датчиков температуры, аналого-цифровой преобразователь является синхронным N-канальным, блок памяти энергонезависимым и перезаписываемым. Дополнительно введены приемопередатчик, персональная ЭВМ, при этом N датчиков температуры (N≥4) информационного датчика размещены перпендикулярно направлению движения фронта теплового возмущения на равных расстояниях R друг от друга, вход приемопередатчика соединен с первым выходом блока измерений, выход приемопередатчика соединен с входом персональной ЭВМ. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 639 737 C1 (51) МПК G01K 13/02 (2006.01) G01P 5/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01K 2013/024 (2006.01); G01P 5/001 (2006.01); G01P 5/18 (2006.01) (21)(22) Заявка: 2017114368, 25.04.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 22.12.2017 (73) Патентообладатель(и): Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" (ФГУП "ГосНИИАС") (RU) (45) Опубликовано: 22.12.2017 Бюл. № 36 Адрес для переписки: 125319, Москва, ул. Викторенко, 7, ФГУП " ...

ANORDNUNG ZUR BERUEHRUNGSLOSEN MESSUNG DER GESCHWINDIGKEIT EINES BEWEGTEN MEDIUMS

Determining arrival time of sound signal transmitted through flow medium in vessel

The method for determining the arrival time of a sound signal, which is transmitted through a flow medium, which flows in a vessel. A sound signal transmitted with a transmitter, for transmitting through the flowing medium in vessel conducting the flowing medium. One mark at least is embedded in the sound signal. The sound signal provided with the mark is transmitted through the flowing medium for the reception at a receiver. The mark is detected, in which the sound signal provided with the mark is detected at the receiver.

Verfahren und Vorrichtung zur Ermittlung von Partikelgrößen und Partikelgeschwindigkeiten

Verfahren zur Messung der Geschwindigkeit einer Flüssigkeitsströmung

Speed sensor

Method and devices for measurement of flow speed using continuous oscillations in a thermal wave

FLOW MEASUREMENT

FREQUENCY CONTROL CIRCUITS

... 1405456 Automatic frequency control; measuring time intervals KENT INSTRUMENTS Ltd 22 Feb 1973 [24 Feb 1972] 8643/72 Headings H3A and H3H A sampling control circuit for controlling the frequency at which an input signal is sampled by apparatus 9 comprises : means 15 providing a preset signal representative of a desired output from the sampler 9; a comparator 16 for comparing the actual and desired signals to produce a difference signal; frequency correction means 17, 18 fed with the difference signal and with a signal dependent on the sampling frequency ; and a signal generator 20, 21 supplied with the output from the frequency correction means so as to produce an output signal which is fed to the sampler 9 to adjust the sampling frequency. In an arrangement for measuring changes in fluid flow through a tube, or speed of movement of a strip, input signals are applied to a crosseorrelator 8 in which they are sampled and processed to produce a signal on line 11 which is representative of ...

Method and apparatus for monitoring the flow of mixtures of fluids in a pipe

Contact-free sensing of a moving mass of material

An apparatus for contact-free sensing of a moving coherent mass of material, for example a stream of molten glass, comprises first sensing means for producing first output signals for determining the speed of advance of the material past the sensing apparatus and second sensing means for producing a second output signal related to a dimension, e.g. the diameter, of the material transverse to its direction of advance. The sensing apparatus further includes optical means comprising a common objective lens for supplying radiation focussed from the material being sensed to both said first and second sensing means.

A method for determining speed of a signal in a medium and associated apparatus

Method for contactless measurement of three dimensional flow velocities

MULTIPHASE FLUID FLOW MEASUREMENT

Apparatus & tool using tracers & single point optical probes for measuring characteristics of fluid flow in a hydrocarbon well & methods of processingresulti

Improvements in or relating to flow meters

... 649,030. Automatic control systems for fluid flow. ENGELHARD,Inc.,C. Aug. 7, 1947, No. 21754. Convention date, May 21, 1946. [Class 38 (iv)] [Also in Groups XXIX and XXXVIII] In a flow meter in which the rate of flow is determined using resistance thermometer 58, 59 connected in the arms of a Wheatstone bridge, the rate of flow of the medium (e.g. gasoline) is controlled by a valve 66 controlled by a reversible motor 65 actuated by the out-of-balance of a control galvanometer 62 in the bridge circuit. As shown in Fig. 5, the medium passes through a main conduit with Venturi or orifice 55, and is partially byepassed through a conduit 56 containing a thermallyinsulated heat-conductive section heated by a coil 57 and carrying a resistance thermometer coil 58. Thermo-constant resistors 60, 61 form the remaining arms of the bridge, while the watts input to the coil 57 is controlled by a variable rheostat 63 and indicated on a wattmeter 64 preferably calibrated to give the rate of flow in lb.

Vorrichtung und Verfahren zur Messung von Eigenschaften eines Fluids

Verfahren zur Messung von Eigenschaften eines Fluids, welches als Fluidstrom einen Strömungskanal (2) durchströmt. In einer Ladeeinheit (3) werden Ladungsträger (4) des Fluids pulsierend geladen und die im Fluidstrom (1) mitgeführte Ladung wird in einem stromabwärts der Ladeeinheit (3) am Strömungskanal (2) angeordneten Elektrometer (5) gemessen. Unter Verwendung einer bekannten Werts für die Länge (LFC) eines Messaufnehmers (6) des Elektrometers (5) und eines vom Elektrometer (5) gemessenen Messverlaufs (9) wird zumindest eine fluiddynamische Eigenschaft des Fluids und/oder eine Partikeleigenschaft von in dem Fluidstrom (1) mitgeführten Ladungsträgern (4) ermittelt.

Method of determining wind speed and installation for carrying out the same

Die Erfindung betrifft ein Verfahren zur Bestimmung einer Windgeschwindigkeit in einer Anlage (1) mit zumindest zwei beabstandeten Windkraftanlagen (2). Um die Windgeschwindigkeit mit hoher Genauigkeit zu bestimmen, ist erfindungsgemäß vorgesehen, dass bei den zumindest zwei Windkraftanlagen (2) ein Auftreten einer Änderung der lokalen Windgeschwindigkeit erfasst wird, wonach zumindest eine Zeitdifferenz bestimmt wird, um welche die lokalen Änderungen bei den zumindest zwei Windkraftanlagen (2) versetzt auftreten, wonach anhand der Zeitdifferenz und eines Abstandes (3) zwischen den Windkraftanlagen (2) die Windgeschwindigkeit bestimmt wird. Des Weiteren betrifft die Erfindung eine Anlage (1) mit zumindest zwei beabstandeten Windkraftanlagen (2).

DEVICE FOR MEASURING THE FLOW RATE OF MELTED MATERIAL.

ULTRASONIC WINDAGE SCALE.

A SPEED MEASUREMENT DEVICE

DUAL PATH ULTRASONIC FLUID FLOW METERING SYSTEM AND METHOD

DEDICATED CORRELATOR

A dedicated correlator receives two noise signals from spaced centers sensing noise in a fluid flow. One of the noise signals is delayed by a variable known amount with respect to the other. The amount of correlation between the delayed and undelayed signal is determined. A sweep voltage generator is connected for variably increasing or decreasing the delay at set rates. A peak lock control is connected to the sweep generator and to the apparatus for establishing correlation for changing the direction of the sweep generator when it is determined that the amount of correlation is decreasing from a maximum. The particular delay amount corresponding to maximum correlation corresponds, in turn, to the amount of time required for the fluid to traverse the two sensors and, thus, the velocity of the fluid. The particular delay amount varies with variations in fluid velocity since the peak lock control follows these variations and controls the sweep voltage generator accordingly.

ACOUSTIC AIRSPEED SENSORS

An acoustic airspeed sensor system can include at least one acoustic transmitter configured to provide an acoustic pulse, a plurality of acoustic receivers including at least a first acoustic receiver positioned at a first radial distance from the at least one acoustic transmitter and a second acoustic receiver positioned at a second radial distance from the at least one acoustic transmitter. The first acoustic receiver is configured to receive the acoustic pulse at a first time and output a first receiver signal. The second acoustic receiver is configured to receive the acoustic pulse at a second time and output a second receiver signal. The sensor system can include an air data module operatively connected to the first acoustic receiver and the second acoustic receiver. The air data module is configured to determine true air speed (TAS) based upon a first signal delay, a second signal delay, and a wind angle.

DISPOSITIF DE DETECTION D'HETEROGENEITES SPATIALES DANS UN DIELECTRIQUE

LE DISPOSITIF COMPORTE UNE SONDE CAPACITIVE 10 UTILISANT AU MOINS UNE PAIRE D'ELECTRODES DE DETECTION 18, 20 AUXQUELLES EST ASSOCIEE UNE ELECTRODE EMETTRICE COMMUNE 16. L'ELECTRODE EMETTRICE 16 EST ALIMENTEE PAR UNE SOURCE DE TENSION ELECTRIQUE 12 ET LES ELECTRODES DE DETECTION 18, 20 SONT CONNECTEES A UN MONTAGE ELECTRONIQUE 14 QUI ELABORE UN SIGNAL DE SORTIE CORRESPONDANT A LA DIFFERENCE DES COURANTS DE DEPLACEMENT INDUITS PAR INFLUENCE DANS LES ELECTRODES DE DETECTION 18, 20. LE MONTAGE ELECTRONIQUE 14 EST CONCU DE TELLE FACON QUE LES ELECTRODES DE DETECTION 18, 20 SOIENT MAINTENUES EN PERMANENCE AU MEME POTENTIEL PAR RAPPORT A LA TENSION D'ALIMENTATION. A CETTE FIN, CHAQUE ELECTRODE DE DETECTION 18, 20 PEUT ETRE CONNECTEE A L'ENTREE INVERSEUSE D'UN AMPLIFICATEUR OPERATIONNEL 30, 34 DONT L'ENTREE NON INVERSEUSE EST AU POTENTIEL AUQUEL LES ELECTRODES DE DETECTION 18, 20 DOIVENT ETRE MAINTENUES PAR RAPPORT A LA TENSION D'ALIMENTATION. UTILISATION NOTAMMENT POUR LA MESURE CORRELATIVE DE ...

PROCEDE DE MESURE DE VITESSE D'ECOULEMENT D'UN FLUIDE PAR DETERMINATION DE LA DUREE DE TRANSIT D'UN MARQUEUR, ET DEBITMETRE FONDE SUR CE PROCEDE

PROCEDE ET DISPOSITIF DE MESURE DE VITESSE ET DEBIT DE FLUIDE. LE DISPOSITIF DE MESURE DE DEBIT DE FLUIDE COMPREND UN TRONCON DE CANALISATION 1 PARCOURU PAR LE FLUIDE. UN GENERATEUR D'IMPULSIONS 4 PROVOQUE PERIODIQUEMENT UN ECHAUFFEMENT DE LA RESISTANCE 2. LE FLUIDE CHAUFFE PARVIENT AVEC UN RETARD FONCTION DU DEBIT A LA RESISTANCE 3 DONT LA VALEUR VARIE AVEC LA TEMPERATURE. UNE BASCULE 8 EST ENCLENCHEE PAR L'IMPULSION DU GENERATEUR 4 ET DECLENCHEE PAR LA VARIATION DE RESISTANCE 3. LA CAPACITE 10, CHARGEE PAR L'IMPULSION DU GENERATEUR 4, SE DECHARGE PENDANT L'ENCLENCHEMENT DE LA BASCULE 8. APPLICATION A LA MESURE DE DEBIT DE GAZ DANS UNE CANALISATION.

A flow measuring device.

METHOD AND DEVICE OF DETERMINATION OF the PROPAGATION VELOCITY Of a WAVE FRONT OF TEMPERATURE IN a GAS

VELOCITY MEASUREMENT SYSTEM WITH SYNCHRONIZED DEMODULATION

CAPTEUR DE MESURE DE LA VITESSE D'UN GAZ A IONISATION

Capteur de mesure de vitesse d'un gaz par temps de vol d'ions comportant un couplage 7, 8, 9a entre l'organe de vannage 17 du gaz dont on veut mesurer la vitesse et l'une des électrodes 3 servant à la mesure du temps de vol à l'intérieur de la canalisation 1 délimitant l'écoulement gazeux. Utilisé à la mesure de la vitesse de l'écoulement gazeux à l'entrée des cylindres d'un moteur à combustion interne. (CF DESSIN DANS BOPI) ...

Process and measuring device relative speed

Flowmeter using emitting and receiving electrode - has at least one electrode mounted on movable support fixed w.r.t. sensor body to set inter-electrode spacing

ANEMOMETRE ULTRASONORE

A.ANEMOMETRE ULTRASONORE. B.ANEMOMETRE ULTRASONORE CARACTERISE EN CE QU'IL COMPORTE UNE STRUCTURE DE SUPPORT FIXE, TROIS COUPLES EMETTEURS-RECEPTEURS DE DISTANCE DETERMINEE ET FORMANT ENTRE EUX DES ANGLES CONNUS, UN GENERATEUR D'ONDES ULTRASONORES POUR L'EXCITATION DES EMETTEURS DE CES COUPLES, CHAQUE RECEPTEUR ETANT RELIE A UN CIRCUIT COMPRENANT UN ADAPTATEUR D'IMPEDANCE, UN PHASEMETRE ET DES MOYENS D'AFFICHAGE, LES PHASEMETRES RELATIFS AUX DIVERS RECEPTEURS ETANT RELIES A UN CALCULATEUR.

DEVICE OF VELOCITY MEASUREMENT Of a MOLTEN METAL IN CIRCULATION HAS LOW SPEED IN a CONDUIT

LE DISPOSITIF COMPORTE UN MOYEN DE CHAUFFAGE 6 DU METAL LIQUIDE, AU MOINS UN MOYEN DE DETECTION 10 DU PASSAGE DE LA FRACTION DE METAL LIQUIDE ECHAUFFEE DANS UNE ZONE DETERMINEE DU CONDUIT 1 ET DES MOYENS DE MESURE DU TEMPS DE PROPAGATION DE LA FRACTION DE METAL ECHAUFFEE SUR UNE DISTANCE PREDETERMINEE. LE MOYEN DE CHAUFFAGE 6 ET LE MOYEN DE DETECTION 10 SONT SITUES ENTIEREMENT A L'EXTERIEUR DU CONDUIT 1. LE MOYEN DE DETECTION 10 EST CONSTITUE PAR UN DISPOSITIF SENSIBLE AUX VARIATIONS D'UNE CARACTERISTIQUE PHYSIQUE AUX VARIATIONS DU METAL LIQUIDE INFLUENCEE PAR LA TEMPERATURE. CE MOYEN DE DETECTION EST DE PREFERENCE CONSTITUE PAR DEUX ENROULEMENTS ELECTRIQUES PLACES AUTOUR DU CONDUIT 1. THE DEVICE INCLUDES A MEANS OF HEATING 6 THE LIQUID METAL, AT LEAST A MEANS OF DETECTION 10 OF THE PASSING OF THE HEATED LIQUID METAL FRACTION THROUGH A DETERMINED AREA OF DUCT 1 AND MEASURES FOR MEASURING THE PROPAGATION TIME OF THE HEAT METAL FRACTION ON A PREDETERMINED DISTANCE. THE HEATING MEANS 6 AND THE DETECTION MEANS 10 ARE LOCATED ENTIRELY OUTSIDE THE DUCT 1. THE DETECTION MEANS 10 IS CONSTITUTED BY A DEVICE SENSITIVE TO VARIATIONS OF A PHYSICAL CHARACTERISTIC TO VARIATIONS IN THE LIQUID METAL INFLUENCED BY THE TEMPERATURE INFLUENCED. THIS MEANS OF DETECTION IS PREFERABLY CONSTITUTED BY TWO ELECTRIC WINDINGS PLACED AROUND DUCT 1.

DEVICE

DEVICE FOR MEASURING VISCOSITY OF ENGINE OIL FOR AGRICULTURAL MACHINE

Disclosed is a device for measuring viscosity of engine oil for an agricultural machine. According to an aspect of the present invention, the device for measuring viscosity of engine oil for an agricultural machine includes: an inclination surface which is formed of a material enabling light to penetrate the same and is a path in which injected engine oil flows; multiple illumination sensors installed in the lower part of the inclination surface at fixed intervals and individually outputting a sensing signal after the engine oil passes an upper end; multiple light emitting elements corresponding to the multiple illumination sensors one-to-one; a control unit lighting on or off the light emitting element corresponding to the illumination sensor outputting the sensing signal of a preset level of a high level or a low level among the multiple light emitting elements; and an angle control unit capable of controlling an angle of the inclination surface in accordance with a kind of the engine ...

Method and device for determining the flow rate of flowing water

APPARATUS FOR MEASURING THE FLOW RATE OF MOLTEN MATERIAL

Apparatus for measuring the flow rate of a flow, stream or jet (1) of a molten, radiation-emitting material, in particular molten glass or ceramic or mineral materials, comprising two radiation detectors (S1, S2) arranged to detect the radiation emitted from a limited section of the material flow at two mutually spaced locations along its path. The output signals of the detectors are applied to signal-processing circuits (ST1, ST2), which discriminate therefrom all pulse-like amplitude variations (P) exceeding a given specific magnitude and provide corresponding signal pulses (P') on their outputs, said pulse-like amplitude variations originating from randomly occuring, local deviations in the radiation from the material flow (1) due to the presence of gas bubbles in the material. The time interval between the occurrence of a signal pulse on the output of the signal-processing circuit (ST1) of the upstream detector (S1) and next following occurrence of a signal pulse on the output of the ...

High temperature particle velocity meter and associated method

The high temperature particle velocity meter is comprised of a pair of spaced apart conducting portions having disposed on each of their upstream edges a first and second non-conducting portion. The bombardment of the particles on the conducting and non-conducting portions creates charged particles in the pneumatically transported material. These particles discharge an electric current through the conducting portions to respective conductors and then to respective signal generating means. The signal generating means convert the electric discharges to an electronic signal. The electronic signals from each of the signal generating means are fed into a calculating means which calculate the particle velocity of the material based on the respective electronic signals. In another embodiment, the device can be used in a ceramic pipeline or a metal pipeline having its inner surface ceramically lined. In this embodiment, the device does not include the non-conducting portions as the pipe is already ...

Device for testing medical infusion

A medical infusion testing device has a pair of identical measuring tubes with valves to direct flow to one tube while draining the one tube down to a predetermined level. The level of liquid in the tubes is measured by an optical charge coupled device. A logic device is arranged to measure a spot reading over a small flow or an averaged flow over an entire reading.

Determination of velocity distribution of gases and gas mixtures

The method uses a long pipe (1) which is evacuated using a pump (3) and has a large number of chambers (6) distributed along the pipe. The chambers can be closed very rapidly using sliders (5). At the opposite end of the pipe to the pump is a start chamber (9) that has a supply (10) and associated blocking valve (11) through which a gas can be delivered. Each of chambers (6), which are of identical length, is equipped with pressure and temperature sensors. The sliders are operated using electronically ignited propellant charges. Typically the pipe has a diameter of some 10 to 20 cm and a length between 100 m and 1 km, with some 100 sections (4).

Verfahren und Vorrichtung zur Bestimmung der Laufzeitgeschwindigkeit einer thermischen Wellenfront

Device for determining instantaneous flow rates

The invention relates to a device for determining the instantaneous flow rate in flowing media, in which slight differences, dependent on place and time, in the state of mutually delimited subvolumes are generated by a transmitter in the flowing medium and are detected by at least one sensor arranged downstream of the transmitter in the flow direction. The propagation time of the changes in state between the transmitter and sensors is a measure of the flow rate. As a consequence of correlative evaluation of the transmitter and sensor signals, the device is distinguished by an exceptionally slight influence on the state of flow of the flowing media. Consequently, it is suitable both for measurements in homogeneous, laminar-flow flowing media, and in turbulently flowing single-phase or multiphase flowing media. Since the sensors detect imported differences in state, the device can be used independently of the temperature of the flowing medium. Figure 1 shows an exemplary embodiment of the ...

ACOUSTIC SPEED MEASUREMENT DEVICE FOR FLUIDS

A fluid speed measurement device includes a pair of ultrasonic transducers T1,T2 spaced in a measuring chamber. A transmitter and receiver system is controlled by a microprocessor 100 which generates pulses which periodically invert and these are switched by switches 140,150 to allow alternate direction of transmission. Reception and detection of signals is effected by blocks 152-168. Time calculation is determined by counter 109 and results are used to calculate flow speed or volume using the microprocessor. A speed increase in the measurement region is effected using a venturi device.

Flow measurement device

ARRANGEMENT FOR DETECTING SPATIAL INHOMOGENEITIES IN A DIELECTRIC

The arrangement includes a capacitive probe comprising pairs of sensor electrodes, arranged in a pseudo-random sequence, with which a common transmitting electrode is associated. The transmitting electrode is fed by an electrical voltage source and to the sensor electrodes of each pair an electrode circuit is connected which generates an output signal which corresponds to the difference of the displacement currents induced in the sensor electrodes. The electronic circuit is constructed such that it maintains the sensor electrodes at any time at a virtual ground potential. For this purpose each sensor electrode may be connected to the inverting input of an operational amplifier whose non-inverting input lies at the potential at which the sensor electrodes are to be held with respect to the supply voltage. The sensed signal is used in a correlative measurement of speed or travel time.

Measurement of three dimensional flow velocities

Contactless measurement of three dimensional flow velocities is made by seeding a flow with tracer particles 7, repeatedly illuminating a planar interrogation volume, imaging the volume onto a photosensors 9, 10 for recording pictures of the volume, and determining the flow velocities from the pictures. The interrogation volume comprises two parallel partial volumes 5, 6 illuminated so that the pictures of different partial volumes are distinguishable eg by using differently polarised beams. Velocities are calculated using an autocorrelation function of a single picture of a partial volume or a cross-correlation function between two separate pictures of the same partial volume, and using a cross-correlation function between two pictures of different partial volumes. The sign of the out-of-plane component of the local flow velocities is determined from the location of a peak of the crosscorrelation function between the pictures of two different partial volumes, and the magnitude from the ...

Method for contactless measurement of three dimensional flow velocities

Method and apparatus for monitoring the flow of mixtures of fluids in a pipe

A method of defining a multiphase flow comprising three phases is disclosed. The method comprises measuring, directly or indirectly, at at least one position across the cross-section of the flow: (a) The individual concentration of each of the three phases; (b) The individual density of each of the three phases; (c) The individual velocity of each of the three phases. The three phases of the flow may comprise a gas phase, an oil phase and an aqueous phase.

FLOW SENSOR

CORRELATORS

... 1398381 Correlation of noise-modulated signals KENT INSTRUMENTS Ltd 2 June 1972 [10 June 1971 3 Feb 1972] 27366/71 and 5184/72 Heading H4D Two noise-modulated signals for which a particular modulation characteristic occurs earlier on one than on the other are crosscorrelated by subjecting the one signal to at least three different delays to give three or more delayed signals, multiplying the said other signal separately by each of the delayed signals, combining the resulting products in pairs, mixing the combination results to give a mixed signal, and adjusting the delays so as to reduce the mixed signal to zero. The Fig. 3 system, for fluid flow measurement, includes transducers 8, 9 each receiving an ultrasonic beam from respective transmitters (not shown). The beams are phase-modulated by random variations in the flow. Detectors 51, 52 are phase-sensitive and provide a filtered and amplified output in digital form. The upstream output is fed to a shift register 54 with output taps 58 ...

MEASUREMENT OF FLUID FLOW VELOCITIES

A signal medium motion measurement apparatus and operation supporting methods

ANALYSIS OF FLUIDS

Analysis of Fluids A method and apparatus are provided for analysing a fluid, especially an oil/water/gas mixture of unknown composition flowing in a pipeline (10). The apparatus can operate remotely, for example on the sea bed. A gamma-ray source(12) and a diametrically arranged scintillator (20) enable the density to be determined; while a fast neutron source (14) and a diametrically arranged germanium gamma spectrometer (22) cooled by a cryo-cooler (26) enable the concentrations of the elements present to be determined. The apparatus enables the weight fractions of oil, water and gas to be derived.

SPEED MEASUREMENT DEVICE

Speed Measurement Device A fluid speed measurement device includes a pair of ultrasonic transducers T1,T2 spaced in a measuring chamber. A transmitter and receiver system is controlled by a microprocessor 100 which generates pulses which periodically invert and these are switched by switches 140,150 to allow alternate direction of transmission. Reception and detection of signals is effected by blocks 152-168. Time calculation is determined by counter 109 and results are used to calculate flow speed or volume using the microprocessor. A speed increase in the measurement region is effected using a venturi device.

ANALYSIS OF FLUIDS

METHODS AND APPARATUS TO DETERMINE AIRCRAFT FLIGHT CONDITIONS

Methods and apparatus to determine aircraft flight conditions are disclosed herein. An example apparatus disclosed herein includes a gaseous packet generator (200) to generate a gaseous packet (202) adjacent an aircraft. The example apparatus also includes a sensor array (118) (120) disposed on the aircraft (100) to acquire information related to the gaseous packet (118) (120). The example apparatus further includes a processor (712) to determine at least one of a first characteristic of air flowing along the aircraft (100) or a second characteristic of the aircraft (100) based on the information.

Underwater detector, underground water flow velocity flow direction measuring instrument and method

A METHOD FOR CONTROLLING the STATE OF the FLOW Of a MOLTEN METAL

ANEMOMETERS

A flow measuring device

L'invention concerne un dispositif de mesure d'un écoulement. Dans ce dispositif détectant des vitesses de milieux électriquement conducteurs en utilisant l'interaction entre au moins un champ magnétique primaire et des composantes d'écoulement hétérogènes ou instationnaires détectées, le champ primaire est un champ continu produit par un composant (2), la direction d'action de ce champ et de composants (4) mesurant le champ magnétique sont sensiblement perpendiculaires à la composante à mesurer de la vitesse d'écoulement, les composants (4) étant disposés les uns derrière les autres dans la direction de la composante d'écoulement mesurée et le champ primaire possède au moins un gradient dans cette direction. Application notamment à la mesure d'écoulements de liquides électriquement conducteurs. The invention relates to a device for measuring a flow. In this device detecting speeds of electrically conductive media using the interaction between at least one primary magnetic field and detected heterogeneous or unsteady flow components, the primary field is a continuous field produced by a component (2), the direction action of this field and components (4) measuring the magnetic field are substantially perpendicular to the component to be measured of the flow velocity, the components (4) being arranged one behind the other in the direction of the component d measured flow and the primary field has at least one gradient in this direction. Application in particular to the measurement of flows of electrically conductive liquids.

APPAREIL COMBINE DE MESURE DE VITESSE ET DE DIMENSION

UN APPAREIL COMBINE DE MESURE DE VITESSE ET DE DIMENSION EST CONCU POUR MESURER LA VITESSE ET LE DIAMETRE, PAR EXEMPLE D'UN COURANT A DE VERRE FONDU PASSANT EN REGARD DE L'APPAREIL DE MESURE. UN DISPOSITIF OPTIQUE DE MESURE DE VITESSE PAR CORRELATION OB, B1, SP, PR, L1, L2, PD1, PD2 ET UN DISPOSITIF OPTIQUE DE MESURE DU DIAMETRE OB, SL, B2, PD3 SONT COMBINES EN UN ENSEMBLE, AVEC UN OBJECTIF COMMUN OB POUR CONCENTRER UN RAYONNEMENT ISSU DE L'OBJET A MESURER. LE DEBIT VOLUMETRIQUE DU COURANT PEUT ETRE CALCULE A PARTIR DES SIGNAUX PROVENANT DE L'APPAREIL DE MESURE.

TRANSMITTER the SPEED Of a GAS HAS IONIZATION

DISPOSITIF POUR MESURER SANS CONTACT LA VITESSE D'UN MILIEU EN MOUVEMENT

Deux transducteurs W1, W2 dont les zones de détection sont décalées l'une par rapport à l'autre dans le sens Z du mouvement du fluide fournissent des signaux électriques S1(t), S2(t) reflétant les défauts d'homogénéité du fluide en mouvement. La mesure résulte de l'analyse de la fonction de corrélation mutuelle temporelle des deux signaux, c'est-à-dire la fonction donnant, pour chaque décalage temporel, l'intégrale des valeurs des produits des deux signaux S1(t), S2(t) ainsi décalés. Les zones de détection L1, L2 des deux transducteurs W1, W2 se recouvrent partiellement. La valeur de mesure est déduite de la pente de la fonction précitée pour la valeur zéro du décalage temporel. Utilisation pour améliorer la précision, notamment aux basses vitesses. (CF DESSIN DANS BOPI) ...

PROCEEDED OF VELOCITY MEASUREMENT Of FLOW Of a FLUID BY DETERMINATION OF the DURATION OF TRANSIT Of a MARKER, AND FLOWMETER BASES ON THIS PROCESS

PROCEDE ET DISPOSITIF DE MESURE DE VITESSE ET DEBIT DE FLUIDE. LE DISPOSITIF DE MESURE DE DEBIT DE FLUIDE COMPREND UN TRONCON DE CANALISATION 1 PARCOURU PAR LE FLUIDE. UN GENERATEUR D'IMPULSIONS 4 PROVOQUE PERIODIQUEMENT UN ECHAUFFEMENT DE LA RESISTANCE 2. LE FLUIDE CHAUFFE PARVIENT AVEC UN RETARD FONCTION DU DEBIT A LA RESISTANCE 3 DONT LA VALEUR VARIE AVEC LA TEMPERATURE. UNE BASCULE 8 EST ENCLENCHEE PAR L'IMPULSION DU GENERATEUR 4 ET DECLENCHEE PAR LA VARIATION DE RESISTANCE 3. LA CAPACITE 10, CHARGEE PAR L'IMPULSION DU GENERATEUR 4, SE DECHARGE PENDANT L'ENCLENCHEMENT DE LA BASCULE 8. APPLICATION A LA MESURE DE DEBIT DE GAZ DANS UNE CANALISATION. METHOD AND DEVICE FOR MEASURING SPEED AND FLUID FLOW. THE FLUID FLOW MEASUREMENT DEVICE INCLUDES A CHANNEL OF PIPING 1 CARRIED BY THE FLUID. A PULSE GENERATOR 4 PERIODICALLY CAUSES A HEATING OF THE RESISTOR 2. THE HEATED FLUID ARRIVES WITH A DELAY DEPENDING ON THE FLOW AT RESISTOR 3 THE VALUE OF WHICH VARIES WITH THE TEMPERATURE. A LOCKER 8 IS ENGAGED BY THE PULSE OF GENERATOR 4 AND TRIGGERED BY THE VARIATION OF RESISTANCE 3. THE CAPACITY 10, CHARGED BY THE PULSE OF GENERATOR 4, DISCHARGES DURING THE ENGAGEMENT OF LOCKER 8. APPLICATION TO THE MEASUREMENT OF GAS FLOW IN A PIPELINE.

ANORDNING FOR BESTEMNING AV RUMSINHOMOGENITETER I ETT DIELEKTRIKUM

METHOD AND DEVICE FOR NON-INVASIVE MEASUREMENT OF THE VELOCITY OF A GAS OR LIQUID

L'invention concerne un procédé permettant de mesurer, de façon non invasive, la vitesse d'un gaz ou d'un liquide en un pont d'examen, qui comprend les étapes suivantes: i) mise d'atomes et/ou de molécules présents dans le gaz ou dans le liquide dans un état respectivement atomique ou moléculaire excité, au moyen d'un premier faisceau lumineux, émis par une source lumineuse, pulsé, focalisé au point d'emplacement; j) après un intervalle temporel 'DELTA't, qui doit être au moins d'une grandeur telle que les atomes et/ou les molécules excités soient ramenés, par relaxation, à un état métastable, mise sélective des atomes et/ou molécules se trouvant dans ledit état métastable dans un état respectivement atomique ou moléculaire excité, au moyen d'un second faisceau lumineux, émis par la source lumineuse, pulsé, d'une intensité plus faible que celle du premier faisceau lumineux, qui traverse le point d'examen et la zone spatiale contenant le point de séjour momentané supposé des atomes et/ou ...

Pulsed thermal flow sensor system

A precise fluid flow meter fabricated by micromachining techniques measures a wide range of fluid flow rates. Two serial portions of an enclosed channel have different cross-sectional areas, and therefore different flow velocities. The fluid carries the thermal pulse through the flow channel to two sensor elements spaced apart along the channel downstream from the heating element. The transit time of the thermal pulse between the two sensor elements measures the fluid flow velocity.

Method and arrangement for measuring flow rate of optically non-homogeneous material

A method and arrangement are disclosed for measuring a flow rate of optically non-homogeneous material in a process pipe. The non-homogeneous material can be illuminated through a window. Images are taken with a camera, through a window, of illuminated non-homogeneous material. Correlation between temporally successive images determines travel performed by the non-homogeneous material in the process pipe between capture of temporally successive images. Velocity of the non-homogeneous material is determined by the time difference between the successive images and the travel.

FEMTOSECOND LASER EXCITATION TAGGING ANEMOMETRY

An apparatus for the imaging of gaseous fluid motion is disclosed. The apparatus includes a sub-nanosecond pulsed laser. The sub-nanosecond pulsed laser is configured to cause a particle species to fragment and for the recombining fragments subsequently to fluoresce. The apparatus also includes a gaseous fluid comprised of particle species. The apparatus also includes a time gated camera. The time gated camera configured to capture at least one image of the fluorescence from the recombining particle fragment species displaced after a specific time lapse following the laser pulse. Additionally, a fluid velocity can be calculated from a comparison of the image of the displaced particle species to an initial reference position and the time lapse. A Femtosecond Laser Electronic Excitation Tagging (FLEET) method of using the disclosed apparatus is also disclosed. 1. An apparatus for the imaging of gaseous fluid motion comprising:a sub-nanosecond pulsed laser configured to cause a particle species to fragment and for the recombining fragments subsequently to fluoresce;a gaseous fluid comprised of particle species;a time gated camera;and wherein the time gated camera configured to capture at least one image of the fluorescence from the recombining particle fragment species displaced after a specific time lapse following the laser pulse.2. The apparatus of claim 1 , wherein a fluid velocity is calculated from a comparison of the image of the displaced particle species to an initial reference position and the time lapse.3. The apparatus of claim 1 , wherein the laser is a sub-picosecond laser.4. The apparatus of claim 1 , wherein the laser has a pulse length below 250 fs.5. The apparatus of claim 1 , wherein the pulse from the pulsed laser has an energy above 1 mJ.6. The apparatus of claim 1 , wherein the time lapse is between about 0 μs to about 20 μs.7. (canceled)8. The apparatus of claim 1 , wherein the time gated camera has a time gate of between 0 μs to about 5 μs.9. ( ...

Adaptable Automatic Nacelle Conversion for Tilt Rotor Aircraft

Systems and methods for displaying to a tilt rotor aircraft pilot an optimum nacelle position and/or automatically controlling movement of the nacelles for the pilot. An automatic nacelle conversion function employs an active flight director speed mode to provide a current desired speed and a final speed. When the automatic nacelle conversion function is in a passive (uncoupled) mode of operation, the pilot follows visual cues, manually achieving the commanded nacelle position by rotating a thumbwheel. When in an active (coupled) mode of operation, the automatic nacelle conversion function provides a fully automatic nacelle controller requiring no pilot input. This automatic nacelle controller provides a variable nacelle rate along with several angle versus speed schedules tailored for different guidance speed modes and a wide range of aircraft configurations. The automatic nacelle conversion function is improved though the inclusion of altitude, rate of climb, and deceleration rate commands. 1. A method , performed by a computer system , for generating a nacelle angle command , comprising the following operations:converting a commanded groundspeed into a commanded airspeed by taking into account a pressure altitude of a tilt rotor aircraft and ambient air temperature; andinputting said commanded airspeed to a speed versus nacelle angle schedule to obtain a nacelle angle that produces a favorable pitch attitude at a given airspeed in un-accelerated level flight of the tilt rotor aircraft.2. The method as recited in claim 1 , further comprising the following operations:computing an inertial descent rate command of the tilt rotor aircraft; andcomputing an adjusted nacelle angle command as a function of said inertial descent rate command.3. The method as recited in claim 2 , wherein said adjusted nacelle angle command is also a function of a deceleration rate command.4. The method as recited in claim 3 , wherein said computing an adjusted nacelle angle command ...

SYSTEMS AND METHODS FOR DETERMINING VELOCITY AND FLUX OF A GAS

Systems and methods for determining gas velocity based on phase differences of signals from two or more interaction paths in a gas analyzer system. A laser source, which can provide access to an absorption gas line, is expanded, or is split into two or more beams. These beams can be used to create two (or more) parallel sampling paths separated by a known distance. Gas travelling in the plane of the two beams of light will pass through the optical paths at two (or more) different times creating very similar signals that will be out of phase with each other. The amount of phase difference will be inversely proportional to the velocity of the gas. 17-. (canceled)8. A device for measuring the flux of a gas , comprising:a laser source that emits laser light having a first diameter;optical elements configured to expand the emitted laser light into a beam having a second diameter larger than the first diameter;a detector element that detects laser light from the beam and outputs signals representing optical power in each of at least two regions of the beam; andan intelligence module, coupled with the detector element and configured to receive the signals and, based on the signals and on a distance between the at least two regions, compute a velocity of the gas along at least a first direction perpendicular to the beam.9. The device of claim 8 , wherein the detector element detects laser light from the beam and outputs signals representing densities of a gas in each of at least three equal regions of the beam claim 8 , and wherein the intelligence module is configured to claim 8 , based on distances between the at least three regions claim 8 , compute a velocity of the gas along the first direction and a second direction claim 8 , the second direction being perpendicular to the beam and to the first direction.10. The device of claim 8 , wherein the detector element comprises a quadrant detector that detects in four different regions.11. The device of claim 8 , wherein the ...

SYSTEMS AND METHODS FOR DETERMINING VELOCITY AND FLUX OF A GAS

Systems and methods for determining gas velocity based on phase differences of signals from two or more interaction paths in a gas analyzer system. A laser source, which can provide access to an absorption gas line, is expanded, or is split into two or more beams. These beams can be used to create two (or more) parallel sampling paths separated by a known distance. Gas travelling in the plane of the two beams of light will pass through the optical paths at two (or more) different times creating very similar signals that will be out of phase with each other. The amount of phase difference will be inversely proportional to the velocity of the gas. 1. A device for measuring the velocity of a gas , comprising:a laser source that emits laser light;optical elements configured to split the emitted laser light into first and second co-linear beam paths ending at first and second detectors, respectively, the first and second beam paths separated by a first distance along a first direction perpendicular to the first and second beam paths;the first detector that detects laser light from the first beam path and outputs a first signal representing a first optical power in the first beam path;the second detector that detects laser light from the second beam path and outputs a second signal representing a second optical power in the second beam path; andan intelligence module, coupled with the first and second detectors and configured to receive the first and second signals and, based on the first distance, compute a velocity of the gas along the first direction.2. The device of claim 1 , wherein the intelligence module is further configured to compute a concentration of the gas and determine a flux of the gas.3. The device of claim 2 , wherein the gas is water vapor.4. The device of claim 1 , wherein the gas includes at least one of HO claim 1 , CO claim 1 , CH claim 1 , NO claim 1 , NH claim 1 , or isotopes of COand/or HO.5. A method of measuring gas velocity claim 1 , the ...

SIMULTANEOUS REAL-TIME MEASUREMENT OF COMPOSITION, FLOW, ATTENUATION, DENSITY, AND PIPE-WALLTHICKNESS IN MULTIPHASE FLUIDS

Apparatus () and methods for making simultaneous measurements of composition (water-cut), fluid flow, and sound attenuation in a multiphase fluid flowing () through a pipe () in real-time, using the same apparatus () are described. Additionally, the apparatus () provides real-time pipe wall thickness monitoring for observing pipe corrosion or internal deposition. Knowledge of wall thickness is necessary to correct for water-cut (oil-water composition) automatically by adjusting the liquid path length internal to the pipe (spool). The use of short duration frequency chirp excitation signals () enables the apparatus to provide information that can be used to extract multiple levels of information from the same measurement in multiphase fluids including the presence of a significant quantity of gas (˜60% gas volume fraction) in different flow regimes. Besides measuring steady flow, this device is useful for measurements during fast changing flows, such as for a rod-pumped well. Measurements up to about 1000 times a second can reliably be made. 127-. (canceled)28. An apparatus for non-invasive , simultaneous measurement of composition , density , fluid flow rate , wall thickness , and sound attenuation of a multiphase fluid comprising at least one liquid component and gas flowing in a pipe having a wall , an outside surface and an axis , comprising:a first transmitting transducer in ultrasonic communication with the outside surface of said pipe for generating a first acoustic frequency chirp signal having a selected frequency range and duration in said multiphase fluid;a second acoustic transmitting transducer in ultrasonic communication with the outside surface of said pipe, disposed a chosen distance downstream from said first transmitting transducer for generating a second acoustic frequency chirp signal having the selected frequency range and duration in said multiphase fluid;a wave generator for generating an acoustic frequency chirp signal for causing said first ...

Ultrasonic Anemometer And Method For Determination Of At Least One Component Of A Wind Velocity Vector Or The Velocity Of Sound In The Atmosphere

Described is an ultrasonic anemometer () as well as a method for determination of at least one component of a wind velocity vector and/or a velocity of sound with at least one sound transducer at least temporarily working as a transmitter () with a sound emission surface for emitting sound waves and at least one sound transducer at least temporarily working as a receiver () with a sound detection surface for at least partially receiving the emitted sound waves, and with an evaluation unit, which, based on a recorded transit time, which the sound waves require on a measuring section located between the sound emission surface of the at least one transmitter and the sound detection surface of the at least one receiver to cover the distance of this measuring section, determines at least one component of a wind velocity vector and/or the velocity of sound. 113-. (canceled)147. An ultrasonic anemometer () for determination of at least one component of a wind velocity vector and/or a velocity of sound , comprising:{'b': 1', '2', '3', '4', '5', '6', '15', '16, 'at least one sound transducer at least temporarily working as at least one transmitter (, , , , , , , ) with a sound emission surface for emitting sound waves;'}{'b': 1', '2', '3', '4', '5', '6', '15', '16, 'at least one sound transducer at least temporarily working as at least one receiver (, , , , , , , ) with a sound detection surface for at least partially receiving emitted sound waves;'}an evaluation unit to determine at least one component of a wind velocity vector and/or a velocity of sound based on a recorded transit time that the sound waves require on a measuring section located between the sound emission surface of the at least one transmitter and the sound detection surface of the at least one receiver to cover the distance of the measuring section,wherein at least one first measuring section between a first sound emission surface of a first transmitter and a first sound detection surface of a first ...

Lighter-Than-Air Vehicle with Relative Drift Navigation

A lighter-than-air (LTA) vehicle navigation system and vehicle. The navigation system includes a first wind probing device disposed at a first probe position, wherein the first wind probing device is in communication, via a first probe communications link, with a body communication system. The navigation system also includes a second wind probing device disposed at a second probe position, wherein the second wind probing device is in communication, via a second probe communications link, with the body communication system. The navigation system also includes a wind variation detection system configured to determine wind information, including at least a wind direction, for the first wind probing device and the second wind probing device.

DROPLET VELOCITY DETECTION

Methods and systems are provided for measuring a velocity of a droplet passing through a microfluidic channel. 1. A method of measuring a velocity of a droplet passing through a microfluidic channel , wherein:the microfluidic channel is interposed between a laser and a detector, and comprises a transparent illumination site;the laser is directed at the illumination site and the detector; andthe detector comprises a plurality of physically separated detection regions and is configured to generate a signal for each region, the signal being proportional to the intensity of light incident on the region,and the method comprising: shining a laser beam emitted by the laser through the illumination site and onto the detector, wherein the laser beam is incident on a first region and a second region,', 'measuring a first baseline signal for the first region, and', 'measuring a second baseline signal for the second region;, 'while the droplet is absent from the illumination site,'} shining the laser beam through the illumination site and onto the detector,', 'measuring a first signal for the first region, and', 'measuring a second signal for the second region;, 'while the droplet passes through the illumination site,'}determining a first departure time at which the first signal initially departs from the first baseline signal by a first predetermined amount;determining a second departure time at which the second signal initially departs from the second baseline signal by a second predetermined amount;calculating a difference between the first departure time and the second departure time to obtain an elapsed time; anddetermining a velocity based on the elapsed time, thereby measuring the velocity of the droplet passing through the microfluidic channel.2. The method of claim 1 , wherein the first region of the detector or the second region of the detector comprises a single pixel or photodiode.3. The method of claim 1 , wherein:the first signal initially departs from the first ...

DROPLET VELOCITY DETECTION

Methods and systems are provided for measuring a velocity of a droplet passing through a microfluidic channel. 1. A method of measuring a velocity of a droplet passing through a microfluidic channel , wherein:the microfluidic channel is interposed between a laser and a detector, and comprises a transparent illumination site;the laser is directed at the illumination site and the detector; andthe detector comprises a plurality of physically separated detection regions and is configured to generate a signal for each region, the signal being proportional to the intensity of light incident on the region,and the method comprises:while the droplet is absent from the illumination site, shining a laser beam emitted by the laser through the illumination site and onto the detector, wherein the laser beam is incident on a first region and a second region of the detector,measuring a first baseline signal for the first region, andmeasuring a second baseline signal for the second region;while the droplet passes through the illumination site, shining the laser beam through the illumination site and onto the detector,measuring a first signal for the first region, andmeasuring a second signal for the second region;determining a first departure time at which the first signal initially departs from the first baseline signal by a first predetermined amount;determining a second departure time at which the second signal initially departs from the second baseline signal by a second predetermined amount;calculating a difference between the first departure time and the second departure time to obtain an elapsed time; anddetermining a velocity based on the elapsed time, thereby measuring the velocity of the droplet passing through the microfluidic channel.2. The method of claim 1 , wherein the first region of the detector or the second region of the detector comprises a single pixel or photodiode.3. The method of claim 1 , wherein:the first signal initially departs from the first baseline ...

System and method for determining grade and acceleration due to motoring and braking

A vehicle-position monitoring system includes liquid-capacitive inclinometer sensor, configured to provide a measurement of grade (θ grade ) of a surface over which a vehicle travels, and an accelerometer to measure acceleration of the vehicle along a principal axis (a x ) of the vehicle along the surface. Direct measurement of the grade (θ grade ) provides a position-tracking system with accurate information to extract acceleration due to motoring and braking (a MB ) form acceleration experienced along the principal axis and track vehicle position without regard to wheel diameter calibration.

System for Accurate Measurement of Vehicle Speeds for Low Speed Industrial Applications

A continuous scanning side laser detector system and method for real time, instantaneous accurate speed and direction measurement of a slow moving bulk material transport vehicle through a bulk material processing station.

Instrument for measuring air speed by means of parabolic movement and measuring method

The invention relates to an instrument for measuring air speed by means of parabolic movement and to a measuring method, wherein the measuring instrument is formed by a cubic structure (1) that holds a screwable, flexible container (2) which releases—where air speed needs to be measured—a drop of liquid, the drop falling on one of the concentric circles located on an interchangeable plate (3) that is positioned on a flat base (4) of the device and perpendicular to the axial end of the outlet for the drop of liquid. Depending—on the height—the movement with which the drop falls, the air speed can be determined by means of the horizontal range of the parabolic movement followed by the drop of liquid, and evaluated using the distance be ween the point of impact of the drop on the surface with respect to the center. The direction of the air speed can also be determined from angle formed by the projection of the vertical plane above which projection the air moves in relation to the x-axis of the x-y plane located above the interchangeable plate (3).

Thermal flowmeter

The present invention provides a thermal flowmeter having good measurement accuracy by reducing deviation in the flow velocity distribution of a gas under measurement flowing through an auxiliary passage. An auxiliary passage 330 for taking in a portion of a gas under measurement IA flowing through a main passage 124 has a curved passage 32 a that bends toward a flowrate measurement element 602 . The curved passage 32 a has a resistance portion 50 formed therein that applies resistance to the flow of the gas under measurement IA flowing through the outer peripheral side CO of the curved passage 32 a so that the pressure loss of the gas under measurement IA flowing through the outer peripheral side CO is high compared to that of the gas flowing through the inner peripheral side CI of the curved passage 32 a.

METHOD & APPARATUS FOR CONTINUOUS AUTOMATED PERFUSION SYSTEM HARVESTING FROM IN-SITU FILTRATION PROBE

An apparatus and method for determining fluid flow (e.g., sterile media flow, filtrate flow, etc.) through tubing is provided. The apparatus includes an air source, a flow valve, a first sensor, a second sensor, and a media tubing section extending between the first sensor and the second sensor. In operation, air from the air source is introduced by the flow valve into a fluid flow to create a lead line of fluid immediately following the introduced air. As the lead line of fluid passes each sensor, the sensors are used to determine a time between when the lead line passes the first sensor and the second sensor and that determined elapsed time is used, along with a determined volume of the media tubing section to determine the rate of flow of the fluid flow. 1. A method for monitoring flow , the method comprising:introducing an amount of air into a fluid flow;sensing, with a first sensor, a first time when a lead line of the fluid flow following the amount of air reaches the first sensor;sensing, with a second sensor, a second time when the lead line of the fluid flow reaches the second sensor; andusing the first time and the second time to determine a flow rate for the fluid flow.2. The method of claim 1 , further comprising:adjusting the flow rate to be closer to a predetermined rate.3. The method of claim 1 , wherein the first time and second time are used to determine a flow rate for the fluid flow in the tubing by determining an elapsed time between the first time and the second time and comparing a volume of fluid flow in the tubing between the first sensor and the second sensor relative to the elapsed time.4. The method of claim 3 , wherein the volume of fluid flow is determined from the interior volume of tubing extending between the first sensor and the second sensor.5. The method of claim 1 , wherein the amount of air is introduced into the fluid flow through a dual pinch valve.6. The method of claim 1 , wherein the fluid flow is sterile media flowing into ...

METHOD AND APPARATUS FOR MONITORING THE FLOW OF MIXTURES OF FLUIDS IN A PIPE

A monitoring apparatus for monitoring a multiphase flow in a pipe, the apparatus comprising: a first monitoring module coupled to the pipe and adapted to provide first output data representing a respective concentration of one phase of a plurality of phases, or a mixture of at least two of the phases, in the multiphase flow by processing at least one first variable representing electrical permittivity of one phase or a mixture of at least two of the phases of the multiphase flow; a second monitoring module coupled to the pipe and adapted to provide second output data representing a respective concentration of one phase, or a mixture of at least two of the phases, of the plurality of phases in the multiphase flow by processing at least one second variable representing electrical conductivity of one phase or a mixture of at least two of the phases of the multiphase flow; and a third monitoring module coupled to the pipe and adapted to provide third output data representing a respective velocity of at least one phase of the plurality of phases in the multiphase flow by processing at least one third variable representing velocity of at least one of the phases. There is a further provided a monitoring method for monitoring a multiphase flow in a pipe. There is a further provided an oil well system including a plurality of oil wells, and one or more monitoring apparatus for monitoring a multiphase flow in a pipe. There is a further provided a method of operating an oil well system using a multiphase fluid flow model which is calibrated or modified based on measured parameters of the multiphase flow. 1. An oil well system including a plurality of oil wells , a plurality of collection pipelines , and a manifold , each oil well having a respective collection pipeline connected to the manifold , a common output pipeline extending from the manifold to an oil collection assembly , and monitoring apparatus coupled to a pipe for monitoring a multiphase flow in the pipe , wherein ...

METHOD AND APPARATUS FOR MONITORING THE FLOW OF MIXTURES OF FLUIDS IN A PIPE

A monitoring apparatus for monitoring a multiphase flow in a pipe, the apparatus comprising: a first monitoring module coupled to the pipe and adapted to provide first output data representing a respective concentration of one phase of a plurality of phases, or a mixture of at least two of the phases, in the multiphase flow by processing at least one first variable representing electrical permittivity of one phase or a mixture of at least two of the phases of the multiphase flow; a second monitoring module coupled to the pipe and adapted to provide second output data representing a respective concentration of one phase, or a mixture of at least two of the phases, of the plurality of phases in the multiphase flow by processing at least one second variable representing electrical conductivity of one phase or a mixture of at least two of the phases of the multiphase flow; and a third monitoring module coupled to the pipe and adapted to provide third output data representing a respective velocity of at least one phase of the plurality of phases in the multiphase flow by processing at least one third variable representing velocity of at least one of the phases. There is a further provided a monitoring method for monitoring a multiphase flow in a pipe. There is a further provided an oil well system including a plurality of oil wells, and one or more monitoring apparatus for monitoring a multiphase flow in a pipe. There is a further provided a method of operating an oil well system using a multiphase fluid flow model which is calibrated or modified based on measured parameters of the multiphase flow. 1. A method of defining a multiphase flow comprising three phases , the method comprising: simultaneously measuring electromagnetically , directly or indirectly , at a plurality of positions across a cross-section of the flow , (a) the individual concentration of each of the three phases; (b) the individual density of each of the three phases; and (c) the individual velocity ...

METHOD & APPARATUS FOR CONTINUOUS AUTOMATED PERFUSION SYSTEM HARVESTING FROM IN-SITU FILTRATION PROBE

An apparatus and method for determining fluid flow (e.g., sterile media flow, filtrate flow, etc.) through tubing is provided. The apparatus includes an air source, a flow valve, a first sensor, a second sensor, and a media tubing section extending between the first sensor and the second sensor. In operation, air from the air source is introduced by the flow valve into a fluid flow to create a lead line of fluid immediately following the introduced air. As the lead line of fluid passes each sensor, the sensors are used to determine a time between when the lead line passes the first sensor and the second sensor and that determined elapsed time is used, along with a determined volume of the media tubing section to determine the rate of flow of the fluid flow. 1. A method for monitoring flow , the method comprising:introducing an amount of air into a fluid flow;sensing, with a first sensor, a first time when a lead line of the fluid flow following the amount of air reaches the first sensor;sensing, with a second sensor, a second time when the lead line of the fluid flow reaches the second sensor; andusing the first time and the second time to determine a flow rate for the fluid flow.2. The method of claim 1 , further comprising:adjusting the flow rate to be closer to a predetermined rate.3. The method of claim 1 , wherein the first time and second time are used to determine a flow rate for the fluid flow in the tubing by determining an elapsed time between the first time and the second time and comparing a volume of fluid flow in the tubing between the first sensor and the second sensor relative to the elapsed time.4. The method of claim 3 , wherein the volume of fluid flow is determined from the interior volume of tubing extending between the first sensor and the second sensor.5. The method of claim 1 , wherein the amount of air is introduced into the fluid flow through a dual pinch valve.6. The method of claim 1 , wherein the fluid flow is sterile media flowing into ...

A micro-fluidic device based upon active matrix principles

A micro-fluidic device (1) including a two-dimensional array of a plurality of components (2) for processing a fluid and/or for sensing properties of the fluid is suggested. Each component (2) is coupled to at least one control terminal (9,10) enabling an active matrix to change the state of each component individually. The components comprise at least one heater element (13). The active matrix includes a two-dimensional array of electronic components (12) realized in thin film technology. The active matrix provides a high versatility of the device. The thin film technology ensures a very cost efficient manufacturing also of large devices. In the micro-fluidic device the fluid flow can be detected.

Kinematic sensor of aerodynamic angle and true air speed

FIELD: measuring equipment. SUBSTANCE: invention can be used for measurement of value (module) and angle of direction (aerodynamic angle) of aircraft true air velocity vector. Essence of the invention consists in that to the inertial sensor of aerodynamic angle and true air speed contains a board with receivers, recording parameters of the incoming air flow, measuring circuit, computing device for processing and generating output signals, wherein receivers are made in form of two superimposed pairs of piezoelectric emitters-receivers of ultrasonic oscillations in direction of incident airflow and against it, installed orthogonal to each other at an angle Θ 0 =45° to axis of board, relative to which value of aerodynamic angle is counted, wherein inputs of piezoelectric emitters through elements of measurement circuit—modulators are connected to generator of sinusoidal oscillations of high frequency, and piezoelectric receivers through amplifiers and detectors of measurement circuit are connected to inputs of two frequency subtracting circuits, at the output of which there are formed frequency differences of pairs of receivers receiving ultrasonic oscillations in opposite directions, outputs of frequency subtracting circuits are connected to input of computing device for processing and generation of output signals, made in form of computer, which outputs are digital outputs on aerodynamic angle α and true air speed V B determined in accordance with predetermined algorithms. EFFECT: simplification of design, improvement of measurement accuracy, reduction of number of measuring channels and simplification of measuring circuit and device of information processing and generation of output signals. 1 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 737 518 C1 (51) МПК G01P 5/18 (2006.01) G01H 11/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01P 5/18 (2020.08); G01H 11/08 (2020.08) (21)(22) Заявка: ...

一种微流体流量/流速和组分协同检测装置及其应用

本发明公开了一种微流体流量/流速和组分协同检测装置及其应用，同检测装置包括基底、微流道层、盖板；在基底上设置有激光诱导石墨烯图案，该激光诱导石墨烯图案位于微流道层的液体通道的投影面，在同检测装置上设置有和微流道层的液体通道相连通的进液口和出液口，在协同检测装置上还设置有用于检测液体通道中的液体组分的电化学检测单元。本发明利用LIG基底在液体和空气环境下展现出的颜色变化确定液体的位置，进而获得液体的体积并计算出单位时间内液体的流动速率，电化学检测单元会实时采集液体通道中的被测液体中组分的浓度信号，计算出液体中相应组分的浓度随时间变化数据，从而建立液体流量/流速和液体中多种组分浓度变化之间耦合关系。

Speed measurement device

내용 없음. No content.

Apparatus for Measuring Viscosity of Engine Oil for Agricultural Machine

본 발명은 농기계용 엔진오일 점도 측정 장치에 대하여 개시한다. 본 발명의 일면에 따른 농기계용 엔진오일 점도 측정 장치는, 투입된 엔진오일이 흐르는 경로이며, 빛을 투과하는 재질로 구성되는 경사면; 상기 경사면의 하부에 일정 간격 이격되어 배치되며, 상기 엔진오일이 그 상단을 지나면, 각기 감지신호를 출력하는 복수의 조도센서; 상기 복수의 조도센서와 일대일로 대응되는 복수의 발광소자; 상기 복수의 발광소자 중에서 하이(High) 또는 로우(Low) 중 기설정된 레벨(Level)의 상기 감지신호를 출력한 조도센서에 대응하는 발광소자를 점등 또는 점멸시키는 제어부; 및 상기 엔진오일의 종류에 따라 상기 경사면의 각도를 조절 가능한 각도조절부를 포함하고, 상기 복수의 발광소자 중 점등 또는 점멸된 발광소자에 의해 상기 엔진오일에 교환이 필요한지 여부를 알리는 것을 특징으로 한다. The present invention relates to an apparatus for measuring viscosity of an engine oil for agricultural machinery. According to an aspect of the present invention, there is provided an apparatus for measuring viscosity of an engine oil for agricultural use, comprising: an inclined surface composed of a material that transmits light; A plurality of illuminance sensors disposed at a lower portion of the inclined surface and spaced apart from each other by a predetermined distance, and outputting sensing signals when the engine oil passes over an upper end thereof; A plurality of light emitting elements corresponding one-to-one with the plurality of illuminance sensors; A control unit for turning on or off a light emitting element corresponding to an illuminance sensor outputting the sensing signal of a predetermined level among High or Low among the plurality of light emitting elements; And an angle adjuster capable of adjusting the angle of the inclined surface in accordance with the type of the engine oil, and informs whether or not the engine oil needs to be replaced by the light emitting element that is turned on or blinked among the plurality of light emitting elements.

Ultrasonic anemometer and method for determining at least one component of the speed of sound or of the wind speed vector in the atmosphere

描述了一种用于确定声速和/或风速矢量的至少一个分量的超声波测风仪(7)以及方法，其带有至少一个至少有时作为发射器工作的具有用于发射声波的声发射面的声换能器(1,2,3,4,5,6,15,16)和至少一个至少有时作为接收器工作的具有用于至少部分接收所发射的声波的声探测面的声换能器(1,2,3,4,5,6,15,16)且带有评估单元，该评估单元在基于声波在处在至少一个发射器的声发射面与至少一个接收器的声探测面之间的测量段上为了经过该测量段需要的获取的行进时间的情形下确定风速矢量的至少一个分量和/或声速。该所描述的技术上的解决方案的特征在于，在第一发射器的第一声发射面与第一接收器的第一声探测面之间的至少一个第一测量段近似垂直于地表布置，且第一声发射面和/或第一声探测面相对水平线倾斜。

Flow velocity measuring device, antigen concentration measuring device, flow velocity measuring method, antigen concentration measuring method

Apparatus for measuring fluid velocity

The present invention relates to an apparatus for measuring the fluid velocity by using a refractive index of light emitted from two light sources. According to an embodiment of the present invention, the apparatus for measuring the fluid velocity comprises: a channel having a path where a fluid can flow; first and second light sources positioned in any one area from upper and lower parts of the channel; a sensor installed in the opposite area of the area where the first and second light sources are positioned based on the channel, and receiving light emitted from the first and second light sources; and a velocity measurement unit for measuring the velocity of the fluid by using intensity of the light received by the sensor.

Flow detector

A liquid flowed detection system is disclosed for monitoring continuous and discontinuous liquid flow in a fluid circuit. The system includes a holding device for maintaining a drip chamber so that its elongated axis generally lies in a vertical plane. A light emitter is oriented to transmit light along an optical path through the drip chamber and intersecting its elongated axis. A light detector located in the optical path opposite the light emitter, generates a signal representative of light received from the light emitter. A processor receives information from the detector and generates a control signal representative of a variability over time of the light detector signal. When the control signal drops below a predetermined level, a flow absence signal is generated which is then correlated to the system's pump velocity corresponding to a time interval (T). If the flow absence signal occurs continuously in a comparison time interval (T), a warning signal is generated.

Method for blood flow acceleration and velocity measurement using MR catheters

A method of magnetic resonance (MR) fluid flow measurement within a subject employs an invasive device with an RF transmit/receive coil and an RF transmit coil spaced a known distance apart. The subject is positioned in a static magnetic field. The invasive device is positioned in a vessel of a subject in which fluid flow is desired to be determined. A regular pattern of RF transmission pulses are radiated through the RF transmit/receive coil causing it to cause a steady-state MR response signal. Intermittently a second RF signal is transmitted from the RF coil positioned upstream which causes a change in the steady-state MR response signal sensed by the downstream transmit/receive coil. This is detected a short delay time later at the RF receive coil. The time delay and the distance between the RF coils leads directly to a fluid velocity. By exchanging the position of the RF transmit and transmit/receive coils, retrograde velocity may be measured. In another embodiment, more RF coils are employed. The changed MR response signal may be sensed at a number of locations at different times, leading to a measured change in velocity, or acceleration of the fluid.

Apparatus for and method of determing flow rate of fluid in roughly vertical tube

Visualization device and method for measuring rock fracture opening and flow velocity vector by using bubble tracer technology

一种利用气泡示踪技术测量岩石裂隙开度与流速矢量的可视化装置及方法，该可视化岩样可模拟单裂隙也可用多块组合模拟多裂隙，带有压力表的加压气囊与加压条和与岩石弹性模量和泊松比一致的透明盖板组成的均化应力装置，具有高精度电子压力表的电动试压泵上连接有起泡仪用于提供渗透压和气泡，可视化装置外安放带有可移动支架的摄像机用于拍摄气泡流径图像。用气泡示踪技术获取气泡在岩石单裂隙中的流动状态，用毫秒级分帧技术处理拍摄视频得到图像，在对图像进行高亮处理，然后用图像数字化技术获得在不同应力条件及不同角度下岩石裂隙中气泡任意流动路径上任意一点开度以及流速矢量。

Method for measuring diameter and distribution of microbubbles and microdroplets, and optical system for measuring diameter and distribution of microbubbles and microdroplets

A kind of water project management intelligent device for measuring

本发明公开了一种水利工程管理用智能测量装置，包括测量装置和固定装置，所述测量装置包括水压传感器和流速测量装置，所述流速测量装置包括底板、固定块、连接块、第一电磁铁、挡板、第二电磁铁、限位块、红外线发射器、红外线接收器、控制面板和计时器，所述底板两侧对称固定有固定块，所述固定块的一端对称固定有连接块，所述连接块上固定有第一电磁铁，所述底板位于两侧的固定块的中间滑动连接有挡板，所述挡板两端对称固定有第二电磁铁，此水利工程管理用智能测量装置，通过锥形导向板可以带动伸缩杆转动，从而通过伸缩杆对调节杆进行支撑，用来抵挡水流的冲击了，增加固定能力，并且通过伸缩杆和调节杆方便调节长度。

Patent JPS5023269A

Patent FR2231975A1

DEVICE FOR NON-CONTACT MEASUREMENT OF THE SPEED OF A MOVING MEDIUM

ULTRASONIC ANEMOMETER

Device for measuring the flow rate of gas

FIELD: measurement equipment. SUBSTANCE: device for measuring the gas flow rate comprises a first power supply coupled to the output from the first arm drive gas flow rate to a voltage including a wire with current, while it entered the microwave oscillator varactor frequency tuning, the second power supply, amplifier and frequency, and the second arm of the gas flow rate-voltage converter via an amplifier connected to a microwave generator with varactors varactor frequency tuning, the second power supply output is connected to the input of a microwave generator with power varactor frequency tuning, the latter is connected to the output of the cymometer input. EFFECT: improved accuracy of measurement of the gas flow rate. 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 613 621 C1 (51) МПК G01P 5/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2016104404, 10.02.2016 (24) Дата начала отсчета срока действия патента: 10.02.2016 (72) Автор(ы): Ахобадзе Гурам Николаевич (RU) Дата регистрации: 21.03.2017 Приоритет(ы): (22) Дата подачи заявки: 10.02.2016 (56) Список документов, цитированных в отчете о поиске: RU 2456556 C1, 20.07.2012. SU (45) Опубликовано: 21.03.2017 Бюл. № 9 195655 A1, 04.05.1967. RU 2024875 C1, 15.12.1994. SU 611153 A1, 15.06.1978. US 4121456 A, 24.10.1978. R U (57) Формула изобретения Устройство для измерения скорости газового потока, содержащее первый блок питания, соединенный выходом с первым плечом преобразователя скорости газового потока в напряжение, включающего в себя проволоку с током, отличающееся тем, что в него введены микроволновой генератор с варакторной перестройкой частоты, второй блок питания, усилитель и частотомер, причем второе плечо преобразователя скорости газового потока в напряжение через усилитель подключено к варактору микроволнового генератора с варакторной перестройкой частоты, выход второго блока питания соединен с входом питания ...

DEVICE FOR MEASURING A FLUID FLOW IN A PIPE

L'invention est relative à un dispositif pour la mesure d'un débit de fluide dans une canalisation. Il comprend un élément chauffant 4 et au moins un capteur de température 6, 7 agencés pour être disposés autour de la canalisation, des moyens 8 pour appliquer audit élément chauffant une puissance électrique prédéterminée, et des moyens pour déterminer le débit dans la canalisation à partir du signal transmis par le capteur. The invention relates to a device for measuring a fluid flow rate in a pipe. It comprises a heating element 4 and at least one temperature sensor 6, 7 arranged to be arranged around the pipe, means 8 for applying to said heating element a predetermined electrical power, and means for determining the flow rate in the pipe from signal transmitted by the sensor.

DEVICE FOR DETECTING SPATIAL HETEROGENEITIES IN A DIELECTRIC

Method for measuring flow of acidic water body by neutralizing alkaline substances

本方案公开了酸性水体流量测量技术领域的一种碱性物质中和测量酸性水体流量的方法，酸性矿山排水(AMD)作为全球最严峻的环境污染物问题之一，研究其水质变化特征、计算水体污染负荷、及评估污染修复效果等都与AMD的流量密不可分。AMD一般具有流路不规则和流量差异大的特点，很难满足常规流量测量方法所需的条件。因此，本发明公开了一种测量AMD流量的新方法：碱性物质与AMD发生中和反应，能快速降低水体电导率(EC)，并在下游水体中准确测出EC，从而计算出AMD流量。根据其中和法的测量原理，同样适用于其它酸性水体流量的测量。该方法具有高精度、易操作、低成本、及对生态环境无害等优点。

Patent FR2231975B1

METHOD FOR MEASURING A SPEED OF A FLUID

Procédé de mesure d'une vitesse d'un fluide comportant les étapes : - de générer une pluralité de fréquences pseudo-aléatoires (fus_n) ; - pour chaque fréquence pseudo-aléatoire (fus_n), d'émettre dans le fluide des signaux ultrasonores qui parcourent un trajet de longueur définie ; - de recevoir les signaux ultrasonores ; - pour chaque signal ultrasonore reçu, de produire une mesure de temps de trajet, de manière à générer pour chaque fréquence pseudo-aléatoire (fus_n) un nombre prédéfini de mesures de temps de trajet ; - pour chaque fréquence pseudo-aléatoire (fus_n), d'évaluer une précision des mesures ; - d'utiliser, pour évaluer la vitesse du fluide, les mesures produites pour la fréquence pseudo-aléatoire qui présente la plus grande précision.

Measurement of relative velocities

Patent FR2472745B1

PROVISION FOR MEASUREMENT WITHOUT CONTACT OF THE SPEED OF A MOVING VEHICLE.

Testing method for floating rate of seam-control high-floating agent

本发明公开一种控缝高上浮剂上浮速率的测试装置及方法，包括支撑架、垂直固定在所述支撑架上的玻璃管、上浮剂储容器、储液罐；所述玻璃管沿轴向方向均匀分布若干个圆孔，所述圆孔安装用于测定液体浊度的浊度计；所述储液罐通过管线与玻璃管的上端的内腔相通，所述上浮剂储容器通过控制阀与玻璃管的下端的内腔相连。本发明通过浊度计准确监测上浮剂上浮过程中有机玻璃管内液体浑浊度的变化，实现上浮剂上浮关键时刻的准确判断和上浮速率的准确计算，克服肉眼通过颜色判断液体浑浊度变化的误差。本发明原理可靠，操作简便，提高了所测上浮剂上浮速率的准确度，为油气藏储层改造上浮剂室内评价及实际应用提供了可靠的上浮数据，具有广阔的市场前景。

Accelerometer Module for Use With A Touch Sensitive Device

An accelerometer module for use with a touch sensor on a device, a method of detecting acceleration using a touch sensor, and a computer program product for receiving the touch sensor data and producing output representative of acceleration. The accelerometer module provides a device with a touch sensor, such as a mobile phone, with the ability to sense acceleration, orientation, or both. The accelerometer module may sense acceleration along a single axis or multiple axis. Sensing acceleration along three axis may be useful for producing a handheld game controller or for providing input to many other applications. The accelerometer module applies a force against a deformable member to change the contact area between the deformable member and the touch sensor, wherein the contact area is a function of the amount of applied acceleration.

Precipitation sensing via intelligent lighting

A method (400) for identifying precipitation (50) includes the steps of: providing (410) a lighting unit (10) having a first photosensor (32), a second photosensor (34), and a controller (22), where the first and second photosensors are vertically spaced by a first distance; receiving (430), by the first photosensor, a first light signal from the precipitation at a first time point (T1); receiving (440), by the second photosensor, a second light signal from the precipitation at a second time point (T2); calculating (450) the amount of time between the first light signal and the second light signal; and calculating (460), based on the first distance and the calculated amount of time between the first light signal and the second light signal, a velocity of the precipitation.

Method and apparatus for measuring liquid flow

A method and apparatus for measuring liquid flow, particularly milk, includes directing the liquid to flow through one or more flow channels, while exposing the liquid to electromagnetic radiation; measuring the transparency to electromagnetic radiation of the liquid flowing through the flow channel; and measuring the momentary attenuation of electromagnetic radiation by the liquid flowing through the flow channels, to determine the momentary volume of the liquid flowing through the flow channel. The momentary velocity of the liquid flowing through the flow channels is also determined, thereby permitting a determination of the momentary flow rate of the liquid flowing through the flow channels.

A flow measurement device

Ultrasonic anemometer

In the ultrasonic anemometer, ultrasonic emitting probes (E1-E4) and receiving probes (R1-R4) are mounted to define at least three different paths for propagation of ultrasonic signals in the air, and means (20) are provided for measuring the ultrasonic signal propagation time along the different paths and for calculating the direction and the speed of the wind based upon these measurements. The emitting and receiving probes are low frequency probes, the emitting probes producing a predetermined wave train type signal of frequency between 10 and 200 kHz; and the measuring and calculating means include means for measuring propagation time by correlation between the emitted and received signals.

SPEED MEASURER

METHOD FOR CONTROLLING THE FLOW STATE OF A LIQUID METAL

CE PROCEDE UTILISE UN DETECTEUR 21 FORME PAR UNE BOBINE D'EXCITATION PARCOURUE PAR UN COURANT ET AU MOINS DEUX BOBINES DE DETECTION ET QUI EST PLACE DANS LA DIRECTION D'ECOULEMENT D'UN METAL LIQUIDE ET DELIVRE DES SIGNAUX A UN ENSEMBLE DE CALCUL ET DE TRAITEMENT 24, FORME D'UN AMPLIFICATEUR 25, D'UN CORRELATEUR 26, D'UN CIRCUIT DE CALCUL 27 ET D'UN CIRCUIT DE DIAGNOSTIC 28, QUI DETERMINE L'ETAT D'ECOULEMENT (VARIATION DE LA VITESSE D'ECOULEMENT, DU POURCENTAGE DE VIDES, ETC.) DU METAL LIQUIDE. APPLICATION NOTAMMENT AU CONTROLE DU COEUR DE REACTEURS REFROIDIS PAR DU SODIUM LIQUIDE. THIS PROCESS USES A DETECTOR 21 SHAPED BY AN EXCITATION COIL PASSED BY A CURRENT AND AT LEAST TWO DETECTION COILS AND WHICH IS PLACED IN THE DIRECTION OF FLOW OF A LIQUID METAL AND DELIVERS SIGNALS TO A COMPUTING AND CONTROL UNIT. PROCESSING 24, IN THE FORM OF AN AMPLIFIER 25, OF A CORRELATOR 26, OF A COMPUTING CIRCUIT 27 AND OF A DIAGNOSIS CIRCUIT 28, WHICH DETERMINES THE FLOW STATE (VARIATION OF THE FLOW SPEED, OF THE PERCENTAGE OF VACUUMS, ETC.) OF LIQUID METAL. APPLICATION IN PARTICULAR TO THE CONTROL OF THE CORE OF REACTORS COOLED BY LIQUID SODIUM.

System and device for determining particle characteristics

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, magnetic label density, charge separation, dielectric constant, and derivatives thereof. The method includes generating a region of space having a substantially constant force field, determining the velocity of at least one particle within the region by identifying and locating the particle and its coordinates in at least two temporally defined digital images, and determining the particle physical characteristics from the determined velocity and a predetermined force field magnitude and direction. A device for determining one or more particle physical characteristics is described which has a force field device for subjecting at least one particle to at least one force field, a substantially transparent flow channel, and a computer system for gathering and analyzing data associated with the at least one particle. A system for determining one or more particle physical characteristics is provided which has a force field device for generating at least one force field having a predetermined force field magnitude and direction and for subjecting at least one particle to the at least one force field, a flow system for regulating the introduction of the at least one particle into the force field device, and a computer system for gathering and analyzing data associated with the at least one particle. A pole piece assembly for producing a region of space having a substantially constant magnetic force field is also provided.

Apparatus for measuring fluid speed by using the refraction of light emitted from two light sources

An apparatus for measuring fluid speed by using the refraction of light is disclosed. The apparatus includes: a channel in which a passage is formed to allow the flow of a fluid; a first and a second light source that are located in any one region of an upper part and a lower part of the channel; a sensor installed in an opposite region of the region where the first and second light sources are located with respect to the channel, to receive the light emitted from the first and second light sources; a speed calculation unit that calculates the speed of the fluid by using a time point at which the intensity of the light received at the sensor changes; and an adjustment unit that is connected to the channel and configured to adjust the flow speed of the fluid based on the calculated speed of the fluid.

Microfluid flow/flow rate and component cooperative detection device and application thereof

本发明公开了一种微流体流量/流速和组分协同检测装置及其应用，同检测装置包括基底、微流道层、盖板；在基底上设置有激光诱导石墨烯图案，该激光诱导石墨烯图案位于微流道层的液体通道的投影面，在同检测装置上设置有和微流道层的液体通道相连通的进液口和出液口，在协同检测装置上还设置有用于检测液体通道中的液体组分的电化学检测单元。本发明利用LIG基底在液体和空气环境下展现出的颜色变化确定液体的位置，进而获得液体的体积并计算出单位时间内液体的流动速率，电化学检测单元会实时采集液体通道中的被测液体中组分的浓度信号，计算出液体中相应组分的浓度随时间变化数据，从而建立液体流量/流速和液体中多种组分浓度变化之间耦合关系。

Method for determining the transportation speed of circuit boards in soldering machines, and transportation equipment for carrying out this method

A method for determining the transportation speed of circuit boards (13) in the soldering area of soldering machines, the circuit board (13) being provisionally equipped with components whose electrical connecting parts are soldered to wiring runs of the circuit board in a solder bath using solder wave. The circuit boards (13) are each retained on carriers (7), each carrier cooperating with at least one measuring device which determines the measurable values of liquid solder rising in a plated-through hole (18). A light source (15) is used to transmit a focused light beam (17) onto the plated-through hole (18), an the reflection of the light beam is determined at the instants at which the solder (19) of the solder wave (21) firstly reaches the lower end region (43) and thereupon the upper end region (49) of the plated-through hole (18). The time difference between the measurements is then determined in a computer (47), and the appropriate transportation speed is determined from this. <IMAGE>

Infra-red devices

We disclose herewith a heterostructure-based infra-red (IR) device comprising a substrate comprising an etched portion and a substrate portion; a device region on the etched portion and the substrate portion, the device region comprising a membrane region which is an area over the etched portion of the substrate. At least one heterostructure-based element is formed at least partially within or on the membrane region and the heterostructure-based element comprises at least one two dimensional carrier gas.

Method and apparatus for measuring the flow speed and the gas volume proportion of a liquid metal stream

Method and apparatus for measuring the flow speed and the gas volume proportion of a stream of liquid metal wherein a magnetic probe is inserted into the stream of liquid metal and induces a first and second voltage according to Faraday's principle of induction in a first and second predetermined volume of the liquid metal stream, the time sequence of the first and second induction voltages due to speed fluctuations is detected as a measure for the flow speed by means of a first and second pair of electrodes at a known axial spacing L, the travel time τ of a predetermined volume of liquid metal from the first pair of electrodes to the second pair of electrodes is measured and the flow speed v = L/τ determined therefrom, and that the induction voltage, which decreases in magnitude with increasing gas volume proportion, is used as a measure for the gas volume proportion in the stream of liquid metal.

Air swirling speed measuring arrangement using removably mounted devices in a cylinder of an internal combustion engine

A measuring nozzle (10) and two optical measuring probes (11, 12) are built into the combustion chamber (4). The measuring nozzle is constructed as a fuel injection nozzle. The construction of this nozzle (10) is such that at least a portion of the quantity of fuel it injects into the combustion chamber is directed transverse to the swirling flow of the air. The two optical measuring probes (11, 12) are arranged downstream of the measuring nozzle (10) in the direction of the swirling movement of the air. Relative to one another, the two measuring probes (11, 12) are located one behind another in the direction of the swirling movement, with the result that the flame generated by the injection by the measuring nozzle passes the two probes sequentially in time. <IMAGE>

Fluid velocity measurement system

A fluid velocity measurement system includes a thermal generation means operated for short durations of time and disposed within a conduit suitable for guiding at least a portion of a fluid whose velocity is to be determined. Disposed downstream in the fluid guide means is at least one of a first and second thermal sensing means. The sensing means are spaced from each other. The first and second thermal sensing means are differentially coupled. The time period starting with the thermal generation means being turned on and heating a slug of fluid and extending to the generation of a differential electrical signal from the sensing means detecting the heated slug of fluid is the flight time of the heated slug of fluid. In one embodiment of the invention circuitry is provided to measure the actual flight time and divide it into a predetermined period of time resulting in a quotient which is proportional to the fluid velocity. In another embodiment the flight time is measured by a count which is divided into a predetermined count which is equivalent to a quotient also proportional to the fluid velocity. Both embodiments further include means for receiving the quotient and converting it into an appropriate signal to operate a numerical display.

Speed sensor

Embodiments relate to a speed sensor and a speed sensing method for measuring relative speeds of receivers with respect to particles in a fluid by detecting individual particles. A receiver generates a plurality of signals related to reflections from particles in a region being monitored. A sampling circuit samples the signals, and a processing device processes the signals according to a particle detection scheme to determine speed. Concomitant use of the same receivers allows depth measurement.

Droplet velocity detection

Methods and systems are provided for measuring a velocity of a droplet passing through a microfluidic channel.

FLUID ANALYSIS THROUGH THE USE OF A RAPID NEUTRON SOURCE.

SE PROPORCIONA UN METODO Y UN APARATO PARA ANALIZAR UN FLUIDO, ESPECIALMENTE UNA MEZCLA DE ACEITE/AGUA/GAS DE COMPOSICION DESCONOCIDA QUE DISCURRE POR UNA LINEA DE TUBERIAS (10). EL APARATO PUEDE OPERAR A DISTANCIA, POR EJEJMPLO EN EL LECHO MARINO. UNA FUENTE DE RAYOS GAMMA (12) Y UN CONTADOR DE CENTELLEO (12) DISPUESTO RADIALMENTE PERMITEN LA DETERMINACION DE LA DENSIDAD; MIENTRAS UNA FUENTE DE NEUTRONES ACELERADOS (14) Y UN ESPECTROMETRO GAMMA DE GERMANIO (22) DISPUESTO RADIALMENTE REFRIGERADO , PERMITEN DETERMINAR LAS CONCENTRACIONES DE LOS ELEMENTOS PRESENTES. EL APARATO PERMITE DEDUCIR EL PESO DE LAS FRACCIONES DE ACEITE, AGUA Y SAL.

Patent DE3628568C2

SAFETY MEASURING DEVICE.

DISPOSITIVO PARA MEDIR LA VELOCIDAD DE UN FLUIDO QUE INCLUYE UN PAR DE TRANSDUCTORES ULTRASONICOS (T1,T2) SEPARADOS EN UNA CAMARA DE MEDICION. UN SISTEMA DE TRANSMISOR Y RECEPTOR ESTA CONTROLADO POR UN MICROPROCESADOR (100) QUE GENERA IMPULSOS QUE SE INVIERTEN PERIODICAMENTE Y ESTOS SON COMUTADOS POR CONMUTADORES (140,150) PARA POSIBILITAR UNA DIRECCION ALTERNA DE TRANSMISION. LA RECEPCION Y LA DETECCION DE SEÑALES ES EFECTUADA POR BLOQUES (152-168). EL CALCULO DEL TIEMPO ES DETERMINADO POR UN CONTADOR (109) Y LOS RESULTADOS SON UTILIZADOS PARA CALCULAR LA VELOCIDAD DEL FLUJO O EL VOLUMEN UTILIZANDO EL MICROPROCESADOR. SE EFECTUA UN AUMENTO DE LA VELOCIDAD EN LA ZONA DE MEDICION UTILIZANDO UN DISPOSITIVO VENTURI. DEVICE FOR MEASURING THE SPEED OF A FLUID INCLUDING A PAIR OF SEPARATED ULTRASONIC TRANSDUCERS (T1, T2) IN A MEASURING CHAMBER. A TRANSMITTER AND RECEIVER SYSTEM IS CONTROLLED BY A MICROPROCESSOR (100) THAT GENERATES PULSES THAT ARE INVERTED PERIODICALLY AND THESE ARE COMMUTED BY SWITCHES (140,150) TO POSSIBLE AN ALTERNATE TRANSMISSION DIRECTION. THE RECEPTION AND DETECTION OF SIGNALS IS PERFORMED BY BLOCKS (152-168). THE CALCULATION OF TIME IS DETERMINED BY A COUNTER (109) AND THE RESULTS ARE USED TO CALCULATE THE FLOW SPEED OR THE VOLUME USING THE MICROPROCESSOR. A SPEED INCREASE IS MADE IN THE MEASURING AREA USING A VENTURI DEVICE.

DEVICE FOR MEASURING A FLUID FLOW IN A PIPELINE

Method, fluid meter, computer program and storage means for measuring a speed of a fluid

Device and method for measuring multi phase flow

Device and method for measuring flow rate and gas/liquid fraction in pipes and wells, in which the flowing medium consists of several phases, particularly for two-phase systems of the natural gas/oil type. The device is characterized by a pressure pulse generator (36) to generate pressure pulses having a frequency of maximum 100 Hz into the medium, and two or more pressure sensors (33a; 33c), to register the low frequent pressure pulse generated in the pressure pulse generator (36), in which at least one sensor is located at a known distance down-stream of the pressure pulse generator and a second sensor located up-stream of the pressure pulse generator at a second known distance, the pressure pulse generator and the respective sensors communicating with a control unit (35) that receive and process the generated pressure pulse and the registered pressure pulses to determine the flow rate of the medium and the specific acoustic propagation speed.

Detector for spatial uneven quality in dielectric

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Flow measurement in medium of non-uniform electrical resistance

The rate of flow of an electrically conductive non-uniform fluid is determined by cross-correlation of the resistance of the fluid measured at two spaced points 21 in the direction of flow. The method is particularly suitable for use in measuring the rate of flow from oil wells which produce an oil-in-water suspension with a high dissolved-salt content and replaces the correlation technique using capacitive measurements used on water-in-oil dispersions. Two spaced pairs 23 of conductivity electrodes are mounted on elongate former 22 and the former is mounted centrally in an oil well. Each electrode is preferably 5-20 mm in length with the electrodes of each pair spaced by 5-10 mm and the pairs spaced by 20-200 mm. Diameter of the former is 20-70 mm and the electrodes are preferably of titanium or plasticised titanium. The resistance is preferably measured using an AC voltage of 10KHz. <IMAGE>

Visualization device and method for measuring rock fracture opening and flow velocity vector by using bubble tracer technology

一种利用气泡示踪技术测量岩石裂隙开度与流速矢量的可视化装置及方法，该可视化岩样可模拟单裂隙也可用多块组合模拟多裂隙，带有压力表的加压气囊与加压条和与岩石弹性模量和泊松比一致的透明盖板组成的均化应力装置，具有高精度电子压力表的电动试压泵上连接有起泡仪用于提供渗透压和气泡，可视化装置外安放带有可移动支架的摄像机用于拍摄气泡流径图像。用气泡示踪技术获取气泡在岩石单裂隙中的流动状态，用毫秒级分帧技术处理拍摄视频得到图像，在对图像进行高亮处理，然后用图像数字化技术获得在不同应力条件及不同角度下岩石裂隙中气泡任意流动路径上任意一点开度以及流速矢量。

System to measure the flow speed of a human/animal body fluid, for analysis of the components, has an electrolyte solution passing through a voltage pulse to be measured with the time difference to give the speed

The system to measure flow speeds of an electrolyte solution (4) in a capillary flow channel (1), and especially in a small flow rate, subjects the electrolyte to a voltage pulse at an electrode (6) site (7) which alters its electrical parameter. The electrical parameter change is detected by a pair of measurement electrodes (2), at a gap (D) from the voltage pulse electrodes in the flow direction. The flow speed is determined by the time difference (11) between the voltage pulse time point (10) and the measurement signal time point (12).

Monitoring system, device and method for monitoring overproof tracing of urban sewage

本发明公开了一种用于监测城市污水超标溯源的监测系统、装置及方法，本发明涉及污水监测技术领域，通过该污水监测装置能够监测城市污水实时流向，通过该装置到达每个检测管道的时间计算出污水流速，记录装置通过每段线路的时长能够得知该线路是否堵塞，通过流向、流量、流速数据能够排除大部分嫌疑污染源，能够锁定少量关键污染节点，方便进行重点监测，节省大量人力和成本，大大提高工作效率；进而，该装置流至回收管道时，使用者需对其进行回收以便再次使用，方便使用者回收，防护网可避免装置流过回收管道；从而使用起来非常方便。

Correlators

METHOD AND EQUIPMENT FOR MEASURING THE FLOW SPEED OF A MATERIAL SUSPENDED IN A CARRIER MEDIUM

METHOD FOR DETERMINING THE SPEED OF A BOAT, DEVICE FOR IMPLEMENTING IT AND APPLICATION IN A SYSTEM COMPRISING A LOCH

Scatterer measuring method and scatterer measuring apparatus

有关本发明的一技术方案的散射体测定方法包括以下处理：照射穿过散射体所存在的第1空间的第1照射光；接受通过第1照射光被散射体散射而产生的第1散射光；在散射体从第1空间移动到至少一部分与第1空间不同的第2空间后，照射穿过第2空间的第2照射光；接受通过第2照射光被散射体散射而产生的第2散射光；以及基于接受第1散射光的第1时刻与接受第2散射光的第2时刻之差、以及从第1时刻到第2时刻为止散射体移动的距离，计算散射体的速度。

Method and device in acoustic flow measurement for ensuring the operability of said measurement

Method and device for acoustic flow measurement for measurement of the flow velocity (v) of gases and/or of quantities derived from same. A long-wave sound is transmitted into the measurement pipe (10) and, by means of two sound detectors (14a, 14b) placed at a certain distance (L) from one another in connection with the measurement pipe (10), the sound signals that propagate in the gas flow downstream and/or upstream are detected, the flow velocity (v) of the gas that flows in the measurement pipe (10) being determined by means of correlation of said sound signals. A sound speed co(T) in a medium at rest, which sound speed has been standardized or will be standardized for a certain temperature, is stored in the memory (20M), and the flow velocity (v) and the other quantities that may be derived from same, if any, are computed, at least in situations of disturbance, by means of the detected downstream speed vd or of the detected upstream speed vu and by means of said sound speed at rest co(T) stored in the memory (20M).

ULTRASONIC ANEMOMETER

Des sondes émettrices E1-E4 et réceptrices R1-R4 d'ultrasons sont disposées de manière à définir au moins trois trajets différents de propagation d'ultrasons dans l'air, et un dispositif 20 est prévu pour mesurer des temps de propagation des ultrasons le long des différents trajets et calculer la direction et de la vitesse du vent à partir des temps de propagation mesurés. Les sondes émettrices et réceptrices sont des sondes basse fréquence, chaque sonde émettrice étant destinée à émettre un signal ultrasonore sous forme d'un train d'onde déterminé à une fréquence ultrasonore comprise entre 10 et 200 kHz, et le dispositif de mesure et de calcul comprend des moyens de mesure de temps de propagation par corrélation entre signal émis par une sonde émettrice et signal reçu par au moins une sonde réceptrice.

Measuring inflow performance with a neutron logging tool

A method for evaluating an inflow performance for completed intervals in a well includes pulsing neutrons into a fluid flow in the wellbore, detecting gamma rays from decays of nitrogen-16 in the well fluid flow with a first gamma ray detector, determining an in situ water velocity from the measurement of the gamma ray decays, and estimating the inflow performance of one or more competed intervals in the well from data that includes the in situ water velocity.

Measuring device for connection to a suction channel of a suction cleaning device

本发明涉及一种测量装置，用于与抽吸清洁设备的吸气通道连接和/或与用于抽吸清洁设备的附件设备的吸气通道连接，测量装置具有壳体和传感器，传感器用于检测流过吸气通道的空气流的参数。为了能够与确定的抽吸清洁设备无关地应用测量装置，在此建议，测量装置设计为相对于抽吸清洁设备和附件设备独立的可移动单元，测量装置具有具备传感器的采样通道、连接件和数据处理装置，连接件用于将测量装置与抽吸清洁设备的吸气通道和/或附件设备的吸气通道相连，数据处理装置用于至少部分地处理由传感器采集到的测量数据，测量装置还具有本地存储器、显示装置和/或通信装置，通信装置用于与相对于测量装置、抽吸清洁设备和附件设备的外部终端设备通信。

For the method and system for the speed for determining to move flow surface

本发明涉及一种用于确定移动流体表面的速度的方法，该方法包括以下步骤S1至S5：‑S1)通过至少一个相机拍摄所述移动流体表面的图像序列；‑S2)比较来自所述序列的第一图像与来自所述序列的第二图像，以将所述流体表面的移动图案与非移动部分区别开并获得包括所述移动图案的第一已处理图像(im_1f)；‑S3)比较来自所述序列的第三图像与来自所述序列的第四图像，以将所述流体表面的移动图案与非移动部分区别开并获得包括所述移动图案的第二已处理图像(im_2f)；‑S4)比较所述第一已处理图像和第二已处理图像以确定所述移动图案的空间位移；以及‑S5)根据所述空间位移确定所述速度。

Flow measurement device

Patent DE3200508C2

PROCEDURE AND DEVICE FOR SEATING THE FLOW SPEED OF A CURRENT, A FLOW OR A RADIATION OF A MELT, RADIATING EQUIPMENT, IN PARTICULAR MELT GLASS OR LIKE

Fluid velocity measuring apparatus

本发明公开利用两个光源发出的光的折射率测定流体的速度的流体速度测定装置。本发明一个实施例的流体速度测定装置可包括：流道，其具有流体能够流动的通路；第一光源及第二光源，其位于所述流道的上部及下部中任意一个区域；传感器，其以所述流道为基准设置于所述第一光源及第二光源所在区域的相反区域受光从所述第一光源及所述第二光源发出的光；以及速度算出部，其利用所述传感器受光的光的强度算出所述流体的速度。

Ultrasonic anemometer and method for determination of at least one component of a wind velocity vector or the velocity of sound in the atmosphere

The invention relates to an ultrasonic anemometer (7) and a method for determining at least one component of a wind speed vector and/or a sound speed with at least one sound transducer (1, 2, 3, 4, 5, 6, 15, 16) working at least intermittently as a transmitter and having a sound emission surface for emitting sound waves, and with at least one sound transducer (1, 2, 3, 4, 5, 6, 15, 16) working at least intermittently as a receiver and having a sound detection surface for at least partially receiving the emitted sound waves, and with an evaluation unit which determines at least one component of a wind speed vector and/or the sound speed on the basis of a detected duration which is required by the sound waves to be in a measurement section between the sound emission surface of the at least one transmitter and the sound detection surface of the at least one receiver in order to cover said measurement section. The technical solution according to the invention is characterised in that at least one first measurement section is arranged approximately vertical to the ground surface between a first sound emission surface of a first transmitter and a first sound detection surface of a first receiver, and in that the first sound emission surface and/or the first sound detection surface are inclined in relation to the horizontal.

IMPROVEMENTS IN APPARATUS TO MEASURE THE SPEED OF A JET

A kind of photosensitive timing cement mortar speed measuring device

本发明公开了一种感光定时水泥砂浆测速装置，涉及建筑工程试验设备技术领域。本发明包括底座，底座上表面固定连接有固定支架，固定支架内表面滑动配合有升降支架，升降支架顶端固定安装有光电开关，光电开关感应头端垂直向下设置，升降支架顶部固定安装有计时器和电源适配器，电源适配器外接电源；电源适配器依次与光电开关、计时器串接，计时器上设置有启停开关。本发明通过利用反射型光电开关的孔隙检测特性对砂浆进行监控，在砂浆流失出现孔隙时，控制计时器自动停止完成测速计时，反应速度快，控制精准，较大的提高了测试准确度。