Vorrichtung zum Messen und/oder Anzeigen von mechanischen Messgroessen mittels eineselektrischen Kondensators

INERTIALWAAGE MIT GEFESSELTER LINEARBEWEGUNG.

Procedure for checking removal of predetermined number of objects from stock entails mass definition process which is carried out by weighing or oscillation analysis

The procedure for checking the removal of a predetermined number of objects(2) from a stock(3) entails a mass definition process which is carried out by weighing or oscillation analysis. The objects removed may be weighed, or the stock may be weighed before and after removal and the difference in value compared with a predetermined difference value. Independent claims are included for a use for the procedure where from a stack of metal sheets a check is made of the removal of one sheet, and for a system to carry out the check which includes a weighing unit(6) in the form of load cells.

PREISRECHNER FUER EINE ELEKTRONISCHE SAITENSCHWINGER-WAAGE

ELECTRICAL BALANCE ASSEMBLIES

... 1391000 Digital weighing apparatus METTLER INSTRUMENTE AG 7 Dec 1972 [27 June 1972] 56577/72 Heading G4H [Also in Division G1] Weighing apparatus comprises a load carrier and a comparator 23 for comparing a predetermined threshold range with signals corresponding to oscillations of the load carrier about its rest position, a digital weight measurement being provided only when the measurement values lie within the range for the duration of at least one measuring period. The balance 10 which may be similar to that described in Specifications 1,324,499 or 1,331,737, is connected to a control circuit 11 which supplies an analogue weight signal to a digital voltmeter 12 of the dual ramp type and a balance condition monitor 14. The monitor 14 includes a differentiating circuit 17 and an integrating circuit 19, the outputs of which are compared in the comparator 23 with the range values from a reference voltage source 22. A store and time delay formed by flip-flops FF1, FF2 and FF3, FF4 receive ...

Substance Detection System and Method

MEASURING MEANS

IMPROVEMENTS IN OR RELATING TO WEIGHING MACHINES

MASS METER WITH SELECTIVELY LOADABLE REFERENCE WEIGHT

A mass meter of the type of conventional weighing scale having an elastic cantilever mechanism provided with a weighing cradle, and a mechanoelectric transducer for sensing a strain of the cantilever to produce a weight indicative signal, which further includes, for cancelling the effect of gravity, a reference weight accompanied with its loading and unloading means, and an arithmetic unit for processing the weight data obtained in both reference weight loaded and unloaded states to calculate the mass of an article on the weighing cradle.

MEASURING A FORCE DEPENDENT FREQUENCY

Calculating weight using image data

A weighing apparatus (10) comprises an imaging device (18) and a pliable platform (19), where the weight (downward force) of an object (30) is calculated based upon a plurality of images captured of the pliable platform. The extent of deformation (32) may be used to determine the weight of the object (30), in particular by comparison with stored reference data of the response of the platform to known weights (either as a look up table, or functional mapping). Thus the platform has known pliability characteristics. In an alternative embodiment, vibrations of the pliable member with the object present may be used to determine the object weight. The imaging device may be a camera or video camera located above or below the platform. The platform may be suspended between two or more walls to allow imaging from below. Weight calculation is carried out by a weight calculating unit (16).

DETERMINING THE CHARGE OF SOLIDS ON A CENTRIFUGE DRUM

WEIGHING CELLS

Method for determining metal dissolution rates in fuels

WAAGE, INSBESONDERE LAUFGEWICHTSWAAGE ODER ABFULLWIEGEANLAGE

PROCEDURE FOR THE DETERMINATION OF THE MASS PRO UNIT OF LENGTH FROM NATURAL OR SYNTHETIC THREADS OR FIBERS AND DEVICE TO THE EXECUTION OF THE PROCEDURE

Force frequency converter for balances

Analysis equipment for measuring instrument

OSCILLATING AND LOCKING APPARATUS AND METHOD FOR VIBRATING TRAY WEIGHING SCALES

MASS METER

Magnetostrictive substance detection system and method

DIFFERENTIAL WEIGHING SYSTEM PROVIDING IMPROVED SIGNAL TO NOISE RATIO

METHOD FOR AUTOMATICALLY FINE ADJUSTING BALANCES

A MICROFLUIDIC-CHANNEL EMBEDDABLE, LATERALLY OSCILLATING GRAVIMETRIC SENSOR DEVICE FABRICATED WITH MICRO-ELECTRO-MECHANICAL SYSTEMS (MEMS) TECHNOLOGY

Laterally oscillating gravimetric sensing device embeddable under micro- f luidic channels and fabricated with micro-electro mechanical systems (MEMS) technology, which detects biological cells and analytes by measuring the change of mass attached on its surface is composed of four main groups, namely a resonator that can be placed onto the basis of the channel, components of the resonator bio-activation, a micro f luidic channel, and the microfabrication techniques, and its main components are the proof mass (1), comb fingers fixed to proof mass (2), folded spring beams (3), channel floor and mechanical soil (4), stationary electrodes (5), comb fingers attached to the stationary electrodes (6), golden film deposited onto the mass (7), immobilized biologic recognition molecules (8), and micro fiuidic channel placed on resonator structure (9).

METHOD FOR AUTOMATICALLY FINE ADJUSTING BALANCES

MASS AND FORCE METER

METHOD OF, AND APPARATUS FOR, MEASURING THE TRUE CONTENTS OF A CYLINDER OF GAS UNDER PRESSURE

There is provided a method of, and apparatus for, measuring the mass of a gas under pressure using a piezoelectric oscillator. The gas is contained within a pressure vessel (100) having a fixed internal volume (V) and the piezoelectric oscillator (202) is immersed in the gas within the pressure vessel (100). The method comprises: a) utilising said piezoelectric oscillator (202) to measure the density of the gas within the high-pressure vessel (100); b) determining, from the density measurement and from the internal volume (V) of said pressure vessel, the mass of the gas within the pressure vessel (100). By providing such a method, the true contents (i.e. mass) of fluid in a pressure vessel such as a cylinder can be measured directly without the need to compensate for factors such as temperature or compressibility. This allows a determination of mass through direct derivation from the density of the gas in the cylinder, reducing the need for additional sensors or complex calculations to ...

Procédé de mesure continue d'une grandeur variable et dispositif pour sa mise en oeuvre.

Elektronisches Auswertungsgerät an Waagen

Elektrischer Massenmesser

Elektromechanischer Kraft-Frequenzwandler für Waagen

Elektrische Waage

Kraftmesser

Kraftmesser

Elektrischer Massen- und Kraftmesser

VERFAHREN ZUR DIGITALEN QUADRATUR DES VERHAELTNISSES ZWEIER FREQUENZEN, INSBESONDERE BEI DER GEWICHTSMESSUNG MIT SAITENWAAGEN.

VERFAHREN ZUR SELBSTTAETIGEN FEINJUSTIERUNG VON NUMERISCH ANZEIGENDEN WAAGEN UND WAAGE ZUR DURCHFUEHRUNG DIESES VERFAHRENS.

Procédé de remplissage à un même poids net de récipients ayant des tares différentes et dispositif pour la mise en oeuvre de ce procédé

Verfahren zur digitalen Bestimmung einer Potenz des Verhältnisses einer variablen Messfrequenz zu einer konstanten Grundfrequenz

Auswertungsgerät für eine Messeinrichtung

Verfahren zur elektronischen Frequenzvervielfachung, insbesondere bei Saitenwaagen

MASS OR KRAFTMESSER.

Balance with digital indication

The balance having electromagnetic force compensation possesses two weighing ranges, a switch (28'') making it possible to switch to the zero point of the finer weighing range at any point within the coarser weighing range, whereupon the entire fine range having the higher indicating resolution is in each case available once again. The non-linearities of the balance characteristic are substantially greater in the upper load range than in the lower load range. Moreover it is desirable to have not only a fine range with a variable zero point, but also a middle range with a constant zero point. In the light of these two aspects, there is additionally present a switch (64), by means of which a change-over can be made to a third weighing range which is greater than the above-mentioned finer range, but which has a higher indicating resolution than the coarser range. ...

Balance with digital display

For twin-range balances with a digital display, a range changeover circuit is proposed which enables switching at any point of the coarser range to the zero point of the finer range. In balances with a counterbalancing device, the changeover to the fine range is appropriately initiated by a counterbalancing switch (28 sec ). Thus, for example, small quantities can be weighed out into heavy containers with relatively high display resolution for the weighing. ...

PROCEDURE FOR THE MANUAL OR AUTOMATIC WAEGEN OF ARTICLES RESEMBLING TARGET WEIGHT AND BALANCE FOR THE EXECUTION OF THIS PROCEDURE.

DIFFERENTIAL DEVICE WEIGHING.

Electromechanical balance with a lever mechanism and with a connectable calibrating weight

In this balance, the engagement point of the calibrating weight (8) is not located in a known way on a load lever of the lever mechanism (3, 4, 5, 6), but on a coupling member (6) which connects two levers (3, 4). The arrangement is preferably such that the gravity line of the calibrating weight (8) and the pulling direction of the coupling member (6) coincide. The risk of adverse bending of parts of the lever mechanism under the influence of the calibrating weight is thereby avoided. ...

CONSTRUCTION UNIT FOR A STRING MEASURING INSTRUMENT.

BALANCE WITH OVERLOAD PROTECTION.

WAEGEZELLE.

POWER ANALYZER.

Electromechanical balance with string oscillator.

Cradle device.

DEVICE AND PROCEDURE FOR THE STATEMENT OF THE MASS OF AN ARTICLE, IN WHICH THE SHIFT OF THE PERIOD OF THE HARMONIOUS OSCILLATION IS MEASURED.

Weighing device

Using the device, the mass of an object is determined using the shift of the oscillation period of a flexibly arranged deposit table (40). An object whose mass is to be determined is deposited on the deposit table (40), the latter is set into oscillation and the period of the harmonic oscillation is then calibrated. This period is compared with the period of the harmonic oscillation when there is no object deposited on the deposit table (40) and the difference, that is to say the frequency shift, allows the determination of the mass of the object. ...

A method of detecting the weight on a scale moving load and balance.

Das erfindungsgemässe Verfahren betrifft die Berechnung des Gewichts einer sich über eine Waage (1) bewegenden Last, wobei ein Lastsignal der Waage über eine Zeitspanne mit Hilfe der Geschwindigkeit der Last gemittelt wird, und wobei mehrere in ihrer Summe das Lastsignal ergebende Teillastsignale verwendet werden, wobei ein erstes Teillastsignal durch ein Maximum anzeigt, sobald sich die Last vollständig auf einem Messabschnitt der Waage (1) befindet und ein zweites Teillastsignal durch einen Minimalwert anzeigt, sobald die Last vollständig vom Messabschnitt der Waage (1) abgelaufen ist, und dass aus diesen Teillastsignalen die Geschwindigkeit der Bewegung der Last ermittelt wird. Eine Waage zur Ausführung des Verfahrens weist zwei Wägeeinheiten (10, 11) mit Biegedeformationselementen auf, an denen Deformationssensoren (7, 15) angeordnet sind, welche die Teillastsignale generieren.

DISPOSITIF POUR MESURER UNE FORCE DU TYPE A CORPS VIBRANT, APPLICABLE A UN SYSTEME DE PESEE

DISPOSITIF POUR MESURER UNE FORCE, QUI COMPREND UN OSCILLATEUR 20 AGISSANT EN REPONSE A UNE FORCE POUR ENGENDRER UN PREMIER SIGNAL ELECTRIQUE A DONT LA FREQUENCE F VARIE EN FONCTION DE LA FORCE QUI LUI EST APPLIQUEE, DES MOYENS 22 POUR MESURER LA FREQUENCE DUDIT PREMIER SIGNAL ELECTRIQUE, ET DES MOYENS POUR CALCULER L'AMPLITUDE DE LA FORCE APPLIQUEE EN UTILISANT LA VALEUR MESUREE DE LADITE FREQUENCE, CE DISPOSITIF ETANT CARACTERISE EN CE QUE LES MOYENS DE MESURE DE LA FREQUENCE COMPRENNENT UN SECOND OSCILLATEUR 24 POUR ENGENDRER UN SECOND SIGNAL ELECTRIQUE D, AYANT UNE FREQUENCE FIXE F QUI EST PLUS ELEVEE QUE LA FREQUENCE F DUDIT PREMIER SIGNAL ELECTRIQUE A, DES MOYENS DE COMPTAGE 28 POUR COMPTER LE NOMBRE DE CYCLES DUDIT SECOND SIGNAL ELECTRIQUE, PENDANT UNE PERIODE DE TEMPS QUI CORRESPOND A UN NOMBRE PREDETERMINE DE CYCLES DUDIT PREMIER SIGNAL ELECTRIQUE, ET DES MOYENS ARITHMETIQUES 30 POUR CALCULER LA FREQUENCE DUDIT PREMIER SIGNAL ELECTRIQUE A PARTIR DE LA VALEUR DU COMPTE PROVENANT ...

CELL OF WEIGHING

SYSTEM FOR MEASURING MASS WEIGHING PAN AND A MECHANICAL ELECTRICAL TRANSFORMER.

Force frequency converter for balances

METHOD FOR DETECTING AND ASSAYING HYDROFLUORIC ACID WITHIN A BASED ELECTROLYTE LITHIUM HEXAFLUOROPHOSPHATE LIPF6 FOR LITHIUM BATTERIES

CALCULATOR OF PRICE FOR ELECTRONIC BALANCE HAS OSCILLATING HAS CORDS

WEIGHT SENSING CELL

ELECTRONIC BALANCE FOR MEASURING MASSES OR FORCES

bALANCE, ESPECIALLY fILLING UP CRADLE PLANT[...] OR

PROCESS AND MEASURING DEVICE OF MASS AND BALANCE.

L'invention concerne la détermination de la masse d'un article. Elle se rapporte à une balance qui comporte une plate-forme 27 montée sur des organes élastiques 26 afin qu'elle puisse osciller sous la commande d'un électro-aimant 86 en présence d'un article ou en l'absence d'un article qui peut être maintenu sur la plate-forme par des rouleaux 106 rappelés élastiquement. La comparaison de la période du déplacement harmonique de la plate-forme avec et sans article permet la détermination de la masse de l'article. Application à la pesée automatique du courrier.

Metodo para medir la masa de un gas bajo presion usando un oscilador piezoelectrico; conjunto sensor y disposicion de valvulas asociados.

Portable analytical system for detecting organic chemicals in water

A portable analytical system for detecting organic chemicals in water comprising a miniature preconcentrator and a SAW detector, the latter being characterized by a nanoporous carbon coating that provides improved response compared to prior art polymer coatings, particularly when detecting low concentrations of trihalomethane chemicals, such as chloroform and bromoform.

System and method for resonant filter mass monitoring

A system and method for measuring particulate concentrations. The system includes a substantially planar, peripherally supported filter for capturing the particulates, an oscillator for oscillating the filter substantially perpendicular to its planar surface, and a sensor for measuring the frequency of oscillation.

APPARATUS FOR MEASURING THE WEIGHT OF SMALL ITEMS

PROBLEM TO BE SOLVED: To provide an apparatus using frequency measurement of a vibration retainer in order to improve the precision of a measurement result while avoiding the restriction of a conventional apparatus for measuring small objects. SOLUTION: This apparatus for measuring the mass and calculating the weight of an individual object to be held thereby comprises forceps 14 having a proximal portion 14a and a distal portion 14b, the proximal portion being adapted to grasp and hold a selected object, means associated with the forceps for initiating vibration of the same while the object is held thereby, and means for measuring the oscillating frequency of the forceps while the object is held thereby, and for utilizing the measured higher oscillating frequency of the empty forceps 14 to compute the mass and the weight of the selected object. COPYRIGHT: (C)2004,JPO&NCIPI ...

CANTILEVER TYPE SENSOR

PROBLEM TO BE SOLVED: To simply measure the physical quantity related to a measuring target. SOLUTION: The cantilever type sensor is equipped with a cantilever 10 formed so as to be continued to a pedestal 12 and a strain resistant element 16 is embedded in a predetermined region including the boundary part with the pedestal 12 of the cantilever 10 to detect the vibration state of the cantilever 10 from a change in a resistance value. A detection circuit 18 for detecting a change in the resistance value of the strain resistance element 16 is connected to the electrode of the strain resistance element 16 and the resistance change of the strain resistance element 16 is detected as a voltage change while the detected signal is outputted to a personal computer 26. Further, the personal computer 26 is connected to an exciting circuit 20 and an impulse excitation control signal is outputted to the exciting circuit 20 while an oscillation signal is outputted to an actuator 14 from the exciting ...

ELEKTROMECHANISCHE WAEGEVORRICHTUNG

KRAFTMESSER

VERFAHREN UND VORRICHTUNG ZUR ACHSLASTBESTIMMUNG EINES FAHRZEUGS

MASS METER

IMPROVEMENTS IN OR RELATING TO FORCE SENSORS

Weighing device

A weighing device of a type wherein a vibrating weight indicative signal is integrated and averaged by arithmetic means and the resultant weight is digitally displayed, with the arithmetic means being improved in accordance with the invention by providing means for calculating the period of vibration of the associated vibrating system to determine the integration time from the calculated vibration period, thereby minimizing the measuring error attributable to a variation in the vibration period with the weight of product to be weighed.

ELECTRICAL EVALUATING DEVICE FOR A MEASURING INSTRUMENT

Weighing apparatus

Weighing apparatus for determining the tare and net weights of a container containing a liquid or a substance behaving like a liquid without requiring separate weighing of the empty container or its contents including apparatus for applying force to the container whereby force interactions between the liquid and the container are negligible for at least a predetermined measuring duration; and apparatus for sensing characteristics of the force applied to the container and of the motion of the container at the measuring duration for determining the tare weight of the container.

Method and device for determining information relating to the mass of a semiconductor wafer

IMPROVEMENTS IN OR RELATING TO FORCE SENSORS

FORCE MEASURING TRANSDUCER WITH FREQUENCY OUTPUT SIGNAL

... 1498237 Force-measuring transducers N-I I KONSTRUKTOR INST ISPYTATELNYKH MASHIN PRIBOROV I SREDSTV IZMERE-NIA MASS 15 Oct 1975 42184/75 Heading G1G A force P to be measured is applied to one end 6 of an integral elastic body 2 comprising flexible joints 5 and a resonant web 18 to vary the frequency of an electromechanical self-excited oscillator 15, 16, 17, 18 and the base 3 of the body 2 is held within and spaced from the protective casing 1 by three pointed supports 8 engaging a groove 7 with a minimum of distortion of the oscillations in the body 2. Two of the supports 8 are fixed, the third, shown in Fig. 1, being biased by a flat spring 11. Adjustment stop 19 prevents overload. The casing is rotatable in bracket 20 for adjusting the sensitivity of the transducer.

Indicator for the correction of the biased errors of a string balance

DEVICE FOR MEASURING THE WEIGHT OF SMALL ARTICLES

VERFAHREN ZUR BESTIMMUNG DER MASSE PRO LÄNGENEINHEIT (DES TITERS) VON NATÜRLICHEN ODER SYNTHETISCHEN FASERN UND VORRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS

ELECTROMECHANICAL BALANCE

ELECTROMECHANICAL BALANCE

BALANCE, IN PARTICULAR LAUFGEWICHTSWAAGE OR ABFULLWIEGEANLAGE

OSCILLATING AND LOCKING APPARATUS AND METHOD FOR VIBRATING TRAY WEIGHING SCALES

DISPLACEMENT DETECTOR, ESPECIALLY DISPLACEMENT TO FREQUENCY TRANSDUCER FOR MEASURING PRESSURE

An apparatus and method for ultrasensitive nanoelectromechanical mass detection

A piezoelectric crystal microbalance device

OSCILLATING AND LOCKING APPARATUS AND METHOD FOR VIBRATING TRAY WEIGHING SCALE

Oscillating and alternatively locking apparatus and method of determining the mass of an article by the shift of the period of oscillation of a flexibly mounted platform. An article whose mass is to be determined is placed upon the platform. The platform is caused to oscillate and the period of harmonic motion is calibrated. This period is compared against the period of harmonic motion when there is no article upon the platform, and the difference, or shift, in frequency, allows a determination of the mass of the article. A reversible motor is used to provide drive to a conveyor for transporting mail pieces onto the tray and for causing oscillation of the tray for purposes of weighing.

GAS FLOW TRANSDUCER UTILIZING ROLLING PISTON

Cavity opto-mechanical sensor array

A mass sensor system including multiple Fabry-Perot microcavities connected in parallel by multiple waveguides. Each of the mass sensors includes a microbridge having a fundamental resonance frequency, and a movable reflective mirror etched into the microbridge; a fixed reflective mirror etched in a substrate, the fixed reflective mirror being fixed to the substrate in a region spaced apart from the movable reflective mirror; and an optical waveguide etched in the substrate that connects the movable mirror and the fixed mirror forming the Fabry-Perot microcavity interferometer. The system includes a tunable continuous-wave laser operative to optically interrogate the Fabry-Perot microcavity of each of the plurality of mass sensors, and a receiver operative to receive sensor signals from each of the plurality of mass sensors, the sensor signals comprising reflective signals and transmitted signals. A continuous-wave laser may generate optical forces that modify the motion, dynamics, or mechanical Q-factor of the microbridge.

Atmospheric environment measuring apparatus, atmospheric environment measuring method and atmospheric environment measuring system

An atmospheric environment measuring apparatus including a filter disposed in a casing and adsorbing a component of a gas to be detected; a first mass sensor disposed in the casing between an inlet of the casing and the filter, including a first piezoelectric vibration element and changing a resonance frequency according to a mass of a substance adhered on a surface of the first piezoelectric vibration element; a second mass sensor disposed in a stage following the filter in the casing, including a second piezoelectric vibration element and changing a resonance frequency according to a mass of a substance adhered on a surface of the second piezoelectric vibration element; and a fan disposed in a stage following the second mass sensor in the casing and fluidizing atmosphere from the inlet toward an outlet of the casing.

Amplification method using a mechanical resonator

An electromechanical amplifying method including a transducing an electrical signal to a mechanical resonator having a mechanical resonance mode with an angular frequency ω 0 ; transducing the non-linear oscillations of the resonator into a transduced electrical signal; and filtering the transduced electrical signal to obtain an output signal, the signal transduced to the resonator being obtained by adding a first input signal of a first amplitude and a first angular frequency ωo s and a second pump signal of a second amplitude greater than the first amplitude and of a second angular frequency ω s that is different from the first angular frequency, the first and second angular frequencies being close to the angular frequency ω 0 of the mechanical resonator and the second pump signal being chosen from a range of angular frequencies ω p and amplitudes in which the resonator is actuated in a non-linear regime.

System and method for automatic registration of use of studded tires

This publication describes a method and a system for registering use of studded decks ( 6 ) and for collecting due toll for use of studded decks on a vehicle ( 19 ) having at least one studded deck ( 6 ). This is done when a vehicle ( 19 ) passes over a detection device ( 1 ) on a road surface ( 18 ) of a road, the detection device ( 1 ) being associated with one or more sensors ( 2 ) that is able to detect impulses created by the decks ( 6 ) on the vehicle ( 19 ) that passes over the detection device ( 1 ). The impulses are registered and compared with a pre-determined value that enables a processing device ( 3 ) to determine whether one or more of the decks ( 6 ) are provided with studs or not. The system is configured in such way that the processed signal provides basis for collecting toll or at least bringing this fact to the attention of the driver and that toll is due.

MEASURING CELL

The invention relates to a cell for measuring a piezoelectric resonator, which has a first casing body and a second casing body, and a quartz resonator configured as a wafer having metal layers on both sides as electric contact surfaces, the first casing body having coupling features and the second casing body having coupling slots, the coupling features being configured to be assembled in the coupling slots when the measuring cell is in a working position, such that the first casing body is assembled in the second casing body when pressure is exerted on the first casing body until the surface of the lower end of the first body makes physical contact with the upper surface of the second casing body and, subsequently, the first casing body is rotated to one side of the axis of symmetry of the measuring cell. 11512131516122423242311. Measurement cell of a piezoelectric resonator () comprising a first casing body () and a second casing body () wherein the resonator () includes at least two electrical contact electrodes () , characterized in that the first casing body () comprises coupling ridges () and the second casing body comprises engaging grooves () wherein the coupling ridges () are configured to be assembled into the engaging grooves () when the measurement cell () is in working position.212131212151211. Measurement cell according to characterized in that the first casing body () is assembled in the second casing body () when a pressing force is exerted on the first casing body () until the surface of the lower end of the first body () makes physical contact with the resonator () and then a rotation of the first casing body () in one direction around the axis of symmetry of the measuring cell () is performed.312. Measurement cell according to characterized in that the first casing body () performs a rotation equal to or greater than 30°.412. Measurement cell according to characterized in that the first casing body () performs a rotation of between 45° and 90°. ...

Surface Acoustic Wave Scale

Apparatus and related methods are provided in a surface acoustic wave (SAW) scale for measuring weight of a load. A processor reads a first frequency of a SAW delay line operating in a first mode. A push oscillator injects a frequency similar to but different than the first frequency in order to cause the SAW delay line to operate in a second mode, and the processor reads a second frequency of the SAW delay line operating in the second mode. A difference between the frequencies is calculated and compared to values in a stored table to determine the first mode at which the SAW delay line was operating. Based on a determination of the first mode and the first frequency, the weight of the load is determined. This determined weight can be used to recalibrate an auxiliary weight sensor. 1. A method of weighing a load , comprising:a) providing an electronic weighing apparatus having a displaceable elastic member that receives a load is displaced by the load such that the displacement of said elastic member is related to the weight of the load, a surface acoustic wave (SAW) delay line that operates in a plurality of modes at a plurality of different frequencies, a push oscillator, a processor coupled to the SAW delay line and the push oscillator, and a stored table relating mode numbers to frequency differences between adjacent modes;b) using the processor to read a first frequency of the SAW delay line operating in a first mode;c) causing the push oscillator to inject a frequency similar but different than the first frequency in order to cause the SAW delay line to operate in a second mode;d) using the processor to read a second frequency of the SAW delay line operating in the second mode;e) calculating a difference between said first frequency and said second frequency;f) using said difference and said stored table to determine the first mode of the SAW delay line; andg) using the first mode and the first frequency, generating a determination of a weight of the load.2. ...

Surface Acoustic Wave Scale That Automatically Updates Calibration Information

Apparatus and related methods are provided for automatically recalibrating a SAW scale for changing environmental factors. During a period of time when there is no change to a weight applied to the scale, readings of SAW transducers which relate to weight indications and environmental factor indications are taken for two adjacent operating modes of the scale, and two calibrated weight calculations are made utilizing those readings. The difference in calibrated weight calculations is then related to a variable utilized to transform the readings into weights, which is updated, thereby recalibrating the scale. 14.-. (canceled)5. An electronic weighing apparatus comprising: a) a displaceable elastic member that receives a load is displaced by the load such that the displacement of said elastic member is related to the weight of the load;b) a first piezoelectric transducer having a first substrate and one of a first surface acoustic wave (SAW) transmitter and a first SAW receiver, said first piezoelectric transducer being coupled to said elastic member;c) a second piezoelectric transducer having a second substrate and the other of said first SAW transmitter and said first SAW receiver, said second piezoelectric transducer being mounted in close proximity to said first piezoelectric transducer such that said displacement of said elastic member causes a corresponding displacement of one of said first and second piezoelectric transducers relative to each other;d) a first amplifier having an input and an output, said input of said first amplifer being coupled to said first SAW receiver and said output of said first amplifier being coupled to said first SAW transmitter such that said first SAW receiver, said first amplifier and said first SAW transmitter form a first oscillator having a first output, said first oscillator adapted to operate in a plurality of modes;e) a second SAW receiver;f) a second SAW transmitter;g) a second amplifier having an input and an output, said ...

FORCE-SENSING CONVEYOR BELT

A conveyor belt and a weighing system for weighing articles conveyed on a conveyor belt. The conveyor belt includes an array of force-sensing elements embedded in the belt to measure forces normal to the belt's conveying surface. The force-sensing elements form parts of passive resonant circuits that each include a capacitor and an inductive coil. 1. A conveyor belt comprising:a belt body having an upper surface; a force-sensitive element that changes the resonant frequency of the passive resonant circuit as a function of the force applied to the force-sensitive element;', 'wherein the passive resonant circuits are energized only when near activation circuits external to the conveyor belt; and', 'wherein the passive resonant circuits are electrically connected to no other circuit elements in the belt body., 'a plurality of passive resonant circuits disposed at individual positions within the belt body, each of the passive resonant circuits having a resonant frequency and including2. A conveyor belt as in further comprising a salient protrusion on the upper surface of the belt body at each of the individual positions claim 1 , wherein the weight of conveyed articles supported atop the salient protrusions is transmitted through the salient protrusions and the belt body to the force-sensitive element.3. A conveyor belt as in wherein each of the passive resonant circuits includes:a capacitor; andan inductive coil electrically connected to the capacitor;wherein one of the inductive coil and the capacitor is the force-sensitive element.4. A conveyor belt as in wherein the force-sensitive element is the capacitor having a capacitance that changes as a function of the force applied claim 3 , whereby the change in capacitance changes the resonant frequency of the passive resonant circuit.5. A conveyor belt as in wherein the capacitor has a first plate and a second plate separated by a nominal distance when no force is applied to the first plate and wherein the first plate ...

High speed robotic weighing system

This disclosure pertains to weighing a physical item while it is moving in a servo-driven conveyor system for e-commerce, logistics, manufacturing and other applications. The introduction of an unknown mass to an electro-mechanical feedback or filter network controlling a conveyance system will modify the steady state behavior of that system in such a way that measuring the phase or frequency shift of an input signal or oscillation will enable us to infer the magnitude of that mass.

METHOD FOR WEIGHING INDIVIDUAL MICRO- AND NANO- SIZED PARTICLES

A method for measuring mass of a micro- and nano-sized particle. The method includes placing the micro- or nano-sized particle on a resonator having an oscillator and a first and second cantilevered arms with interdigitating finger, energizing the oscillator at a selective frequency thereby causing mechanical vibration in the first and second cantilevered arms, directing a light beam from a light source onto the interdigitating fingers, sensing intensity of light of the reflected diffraction pattern by at least one photodetector positioned about at least one of the modes, varying the frequency by sweeping a range of frequencies and correlating the sensed intensity to mass to thereby determine the mass of the micro- or nano-sized particle. 1. A method for measuring mass of a micro- and nano-sized particle comprising: a base portion,', 'an oscillator coupled to the base portion configured to vibrate the base portion,', 'a first cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, and', 'a second cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end,', 'each of the first and second cantilever beams further having a plurality of fingers near a corresponding tip inwardly pointing, such that the entirety of each cantilever beam forms a substantially mirror image of the entirety of other,', 'the first plurality of fingers interdigitating with the second plurality of fingers such that the first cantilevered beam and the second cantilevered beam can oscillate independent of each other,', 'the interdigitating fingers separated by gaps that are configured to reflect light from the interdigitating fingers during oscillation of the first and second cantilevered beams to form a diffraction pattern;, 'placing the micro- or nano-sized particle on a resonator, the resonator comprisingenergizing the oscillator at a selective frequency thereby causing mechanical vibration in the ...

SYSTEM FOR WEIGHING INDIVIDUAL MICRO- AND NANO- SIZED PARTICLES

A device for weighing micro- and nano-sized particles. The device includes a base portion, an oscillator coupled to the base portion configured to vibrate the base portion, a first cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, and a second cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, each of the first and second cantilever beams further having a first plurality of fingers near the first tip portion inwardly pointing and a second plurality of fingers near the second tip portion inwardly pointing, respectively, such that the entirety of each cantilever beam is positioned in a side-by-side manner next to the entirety of the other forming substantially mirror images of one another, the first plurality of fingers interdigitating with the second plurality of fingers such that the first cantilevered beam and the second cantilevered beam can oscillate independent of each other, the interdigitating fingers separated by gaps that are configured to reflect light from the interdigitating fingers during oscillation of the first and second cantilevered beams to form a diffraction pattern. 1. A device for weighing micro- and nano-sized particles , comprising:a base portion; a first cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end; and', 'a second cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end;', 'each of the first and second cantilever beams further having a first plurality of fingers near the first tip portion inwardly pointing and a second plurality of fingers near the second tip portion inwardly pointing, respectively, such that the entirety of each cantilever beam is positioned in a side-by-side manner next to the entirety of the other forming substantially mirror images of one another;', 'the first plurality of fingers interdigitating with the ...

Surface Acoustic Wave Scale That Automatically Updates Calibration Information

Apparatus and related methods are provided for automatically recalibrating a SAW scale for changing environmental factors. During a period of time when there is no change to a weight applied to the scale, readings of SAW transducers which relate to weight indications and environmental factor indications are taken for two adjacent operating modes of the scale, and two calibrated weight calculations are made utilizing those readings. The difference in calibrated weight calculations is then related to a variable utilized to transform the readings into weights, which is updated, thereby recalibrating the scale. 1. A transducer for a surface acoustic wave (SAW) weighing device , comprising:a lithium niobate substrate;at least one electrode attached to said lithium niobate substrate by glue; anda holder attached to said lithium niobate substrate by a bond, wherein said at least one of said substrate and said holder is adapted to reduce stress on said bond when an ambient temperature in which said transducer is located changes significantly, by either (i) said lithium niobate substrate having a thickness between 0.25 mm and 0.1 mm, and said holder having a thickness at least ten times the thickness of said lithium niobate substrate, (ii) said holder and said lithium niobate substrate having a thickness such that said lithium niobate substrate and said holder bend together like a bimetallic strip when said ambient temperature changes significantly, (iii) said holder having a front face to which said lithium niobate substrate is coupled, said front face defining a cantilevered beam, and said bond between said lithium niobate substrate and said holder located on said cantilevered beam and a second surface displaced from said cantilevered beam such that when said ambient temperature changes significantly said beam accommodates thermal stress, (iv) further comprising an intermediate plate between said lithium niobate substrate and said holder, said intermediate plate having a ...

System for managing bulk liquids and/or solids

A system for managing of bulk liquids and/or bulk solids for in-vitro diagnostics is disclosed. The system comprises a sample processing unit and a container unit for receiving a supply container supplying the sample processing unit with a bulk liquid/solid and/or a waste container receiving waste from the sample processing unit. The system further comprises a weight measuring device comprising a loading plate, a base and a force measuring cell. The force measuring cell comprises a sensor comprising a tensioned sensor wire. The loading plate is biased with respect to the base by a weight applied to the loading plate by a container and to transfer force to the force measuring cell. The transferred force causes a deformation of the force measuring cell and a change in tension of the sensor wire causing a change in vibrational frequency resulting in a signal indicative of the weight of the container.

AEROSOL MASS SENSOR AND SENSING METHOD

A mass sensor for measuring particle mass within an aerosol uses resonance frequency detection to determine a mass of particles. A heating element is used for heating the resonant sensor element and it is controlled during a sensing cycle, with the change in mass of the deposited particles monitored during heating. This enables a low cost device to be able to detect particle concentration as well as provide information about the chemical and/or physical nature of the particles. 1. An air treatment device comprising: a sensor element;', 'a heating element for heating the sensor element;', 'a transducer element for driving the sensor element into resonance and detecting the resonance frequency of the sensor element, wherein the resonance frequency is dependent on a mass of particles deposited on the sensor element; and', 'a controller for operating the heating element and monitor a change in the mass during heating based on a detected change in the resonance frequency,, 'a mass sensor for measuring particle mass within an aerosol, the mass sensor comprising compare the change in mass information with information stored in a look-up table, thereby identifying aerosol generating events and expected particle size distributions for the identified events; and', 'control the air treatment device in dependence on the identified aerosol genertaing events and corresponding particle size distributions., 'wherein the controller is further adapted to,'}2. A device as claimed in claim 1 , wherein the controller is further adapted to:implement an initial sampling operation with no heating; andperform a subsequent temperature control.3. A device as claimed in claim 2 , further comprising the look up table claim 2 , which comprise information relating to the mass-temperature function for different types of particulate material.4. A device as claimed in claim 1 , wherein the sensor element comprises a MEMS sensor having a resonator body.5. A device as claimed in claim 4 , wherein the ...

HIGH SPEED ROBOTIC WEIGHING SYSTEM

This disclosure pertains to weighing a physical item while it is moving in a servo-driven conveyor system for e-commerce, logistics, manufacturing and other applications. The introduction of an unknown mass to an electro-mechanical feedback or filter network controlling a conveyance system will modify the steady state behavior of that system in such a way that measuring the phase or frequency shift of an input signal or oscillation will enable us to infer the magnitude of that mass. 1. A system for weighing items while they are moving , the system comprising:a scale conveyor arranged to receive at least one item from an infeed conveyor, the scale conveyor including a drive axle;a servo motor having a shaft;a servo drive system coupled to the server motor to drive the motor responsive to a command velocity input signal;a motor mount arranged for coupling the servo motor shaft to the drive axle of the scale conveyor, the motor mount comprising a viscous rotary damper, a rotary spring and a shaft coupler, arranged to connect the servo motor shaft to the drive axle applying the rotary damper viscosity;a velocity sensor coupled to the scale conveyor to generate velocity signals responsive to a current velocity of the scale conveyor; anda processor configured to—monitor at least one of (a) a frequency of oscillation and (b) a phase response of the velocity signals to detect a variation;responsive to detecting the variation, analyze the variation of frequency of oscillation and or the phase response; andinfer a mass of the item(s) received on the scale conveyor based on the analysis.2. The system of wherein:a frequency of oscillation before the item is received on the conveyor is a natural resonant frequency arising based on the velocity signals from the velocity encoder being fed back to the servo drive system as the command velocity input of the servo drive system so as to provide a positive feedback loop supporting natural self-exciting oscillation; andthe variation is ...

Force detection sensor, force sensor, torque sensor, and robot

A force detection sensor includes a base member having a first surface subjected to an external force and a second surface having a normal direction different from the first surface, and electrode fingers placed on the second surface, wherein an arrangement direction of the electrode fingers is different from the normal direction of the first surface in a plan view of the second surface. Further, the second surface includes a surface of a piezoelectric material. A constituent material of the piezoelectric material is quartz crystal. The first surface crosses an electrical axis of the quartz crystal.

Filter Arrangement of a Vehicle

A filter arrangement of a vehicle includes a filter, preferably an active carbon filter, a sprung suspension for the vibrational mounting of the filter in the vehicle, a sensor unit for determining a variable corresponding to the current weight of the filter from a vibrational movement of the filter, and an analyzing unit for calculating a filling degree of the filter from the filter weight determined, taking the empty weight of the filter into account. The filter is suspended such that the filter can vibrate about a rotational axis fixed to the vehicle.

Measurement Method, Measurement Device, Measurement System, And Measurement Program

A measurement method includes: a high-pass filter processing step of performing high-pass filter processing on observation data-based velocity data including a drift noise to generate drift noise reduction data in which the drift noise is reduced; a displacement data generation step of generating displacement data by integrating the drift noise reduction data; a correction data estimation step of estimating, based on the displacement data, correction data corresponding to a difference between the displacement data and data obtained by removing the drift noise from data obtained by integrating the velocity data; and a measurement data generation step of generating measurement data by adding the displacement data and the correction data.

METHOD, ARRANGEMENT, COMPUTER PROGRAM PRODUCT AND COMPUTER-READABLE MEDIUM FOR AUTOMATICALLY DETERMINING PATIENT WEIGHT WITH A PATIENT POSITIONING DEVICE

A method automatically determines a weight of a patient lying on a tabletop of a patient positioning device. A motorized movement of the tabletop along at least one predeterminable axis sets the tabletop in an oscillation via an elastic drive train element, and the patient's weight is determined from a determined oscillation frequency. Therefore, the weight of a patient lying on a patient positioning device can be determined in a simple manner. 1. A method for automatically determining a weight of a patient lying on a tabletop of a patient positioning device , which comprises the steps of:inducing a motorized movement of the tabletop along at least one predeterminable axis for setting the tabletop in oscillation by means of an elastic drive train element; anddetermining the weight of the patient from a determined oscillation frequency.2. The method according to claim 1 , which further comprises determining the weight of the patient by a comparison with frequency values determined empirically in advance.3. The method according to claim 1 , which further comprises reducing the oscillation of the tabletop via a motor controller claim 1 , the weight of the patient can be determined from the determined oscillation frequency of at least one control parameter of the motor controller.4. The method according to claim 3 , wherein the control parameter is a motor current.5. The method according to claim 1 , which further comprises forming a mean patient weight value on a basis of the motorized movement of the tabletop along multiple axes.6. The method according to claim 3 , wherein in a predeterminable time interval the motor controller can create a tendency for oscillation.7. The method according to claim 1 , wherein:before the weight of the patient is determined, moving the tabletop without the patient; anda variance in a determined frequency from a determined initial value is used for compensation and/or calibration purposes.8. A configuration for automatically determining ...

Method for obtaining the absorption position, mass and rigidity of a particle

A method for obtaining the absorption position, mass and rigidity of a particle deposited on the surface of a resonator based on the relative change in the resonance frequency of said resonator in 3 or 4 flexural vibration modes. The rigidity of the particles is of great interest in the study of cells and other biological compounds that change state without significantly changing the mass.

SENSING SENSOR, INFORMATION PROCESSING DEVICE, SENSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM STORING A PROGRAM

A sensing sensor includes a main body portion, a piezoelectric resonator, a connecting terminal, and an information storage. The main body portion includes a supply region to which the sample solution is supplied. The piezoelectric resonator is disposed to face the supply region and includes a capturing layer that captures a sensing object. The connecting terminal is configured to attachably/detachably connect a conductive path connected to an electrode of the piezoelectric resonator to a frequency measuring unit. The information storage stores calibration curve information to specify a calibration curve that indicates a relationship between a density of the sensing object and a frequency variation amount of the piezoelectric resonator before and after supplying the sample solution. 1. A sensing sensor for detecting a density of a sensing object in a sample solution as a frequency variation of a piezoelectric resonator , the sensing sensor comprising:a main body portion that includes a supply region to which the sample solution is supplied;the piezoelectric resonator disposed to face the supply region, the piezoelectric resonator including a capturing layer that captures the sensing object;a connecting terminal configured to attachably/detachably connect a conductive path connected to an electrode of the piezoelectric resonator to a frequency measuring unit; andan information storage that stores calibration curve information to specify a calibration curve that indicates a relationship between a density of the sensing object and a frequency variation amount of the piezoelectric resonator before and after supplying the sample solution.2. The sensing sensor according to claim 1 , whereinthe information storage includes a barcode.3. The sensing sensor according to claim 1 , whereinthe calibration curve information includes information to select a function that corresponds to a calibration curve among a plurality of functions.4. An information processing device ...

MAGNESIUM ZINC OXIDE NANOSTRUCTURE MODIFIED BIOSENSOR AND MONITORING OF RESPONSE OF CELL POPULATION TO AN AGENT USING THE SAME

A magnesium zinc oxide (MZO) nanostructure modified quartz crystal microbalance (MZO-QCM) takes advantage of the unique sensing ability and biocompatibility of MZO-based nanostructures, and combines them with the dynamic impedance spectrum capability of the bulk acoustic wave (BAW) devices including QCM, to form a real-time, noninvasive and label-free cell monitoring biosensor, specifically detecting the susceptibility and resistance of bacterial and fungal strains and cancer cells to various antibiotic and antifungal drugs and anticancer drugs, respectively. 1. A method of monitoring response of a cell population to an agent , comprising:{'sub': nano', 'nano, 'claim-text': a piezoelectric layer sandwiched between a top and bottom electrodes, and', {'sub': x', '1−x, 'MgZnO (MZO)-based nanostructures deposited and patterned on a top surface of the top electrode, wherein the Mg composition x in MZO is in the range of 0 Подробнее

Method for detecting and dosing hydrofluoric acid in an electrolyte containing lithium hexafluorophosphate lipf6 for lithium batteries

A method for detecting and dosing hydrofluoric acid content of an electrolyte containing lithium hexafluorophosphate LiPF 6 in lithium batteries, including measuring a variation in weight of a material that can undergo a surface reaction with the hydrofluoric acid in the electrolyte, the variation being determined by a quartz microbalance.

Circuit for measuring the resonant frequency of nanoresonators

In the field of nanoresonator oscillators or NEMS (nanoelectromechanical systems) oscillators, a circuit is proposed for measuring the oscillation frequency of a resonator, including a phase-locked loop with a frequency-controlled oscillator and a phase comparator. The resonator includes a vibration excitation input and a dynamic polarization input (using strain gauges). The frequency-controlled oscillator applies a polarization frequency f1 to the polarization input. A frequency generator supplies a fixed intermediate frequency FI; a mixer receives the frequencies f1 and FI for producing an excitation frequency f0 that is the sum or difference of f1 and FI. The phase comparator receives the frequency FI and the output signal of the resonator and produces a control signal that is sent to the frequency-controlled oscillator, indirectly locking the oscillation frequency onto the resonant frequency of the resonator.

FINE PARTICLE SENSOR WITH CASCADED MICROSCALES

A sensor for the continuous in-situ analysis of an aerosol flow for measuring the mass of the micron/submicron particles suspended in the air flow, including an aeraulic sorter allowing the particles to be sorted according to their size with an impactor body with a cascade of one or more stages; at least one MEMS microbalance per stage, with an oscillating silicon membrane located on the impaction zone of the particles; processor connected to each MEMS microbalance to determine the mass of all the particles on the impaction zone; a system for cleaning the MEMS microbalances allowing the evacuation of the particles from the MEMS microbalances; means for driving the aerosol flow. 1. A sensor for the continuous in-situ analysis of an aerosol flow , allowing the continuous measurement of the mass concentration , by size range of micron or submicron particles , suspended in the air flow , an aeraulic sorter allowing to carry out the granulometry of the particles according to their size, by an impactor body with a cascade of several stages,', 'with a flow pipe along its length, and at the inlet of the aeraulic sorter a particle sampling head allowing only PM10 particles to pass through,', 'each stage consisting of at least:, 'comprisingan axial nozzle through which the flow enters the stage, andlateral openings;the diameter and the number of lateral openings and of the axial nozzle being chosen to allow the control of the aerosol flow rate, and the sorting of the particles according to their inertia, at each stage;at least one MEMS microbalance per stage, located at a distance from and facing the axial nozzle, with an active surface which is located in the particle impaction zone between lateral openings which allow the flow to pass through;to determine the mass less than or equal to one microgram of all the particles deposited; a processor connected to each MEMS microbalance to determine the mass of all the particles on the impaction zone;', 'a system for cleaning each ...

Optomechanical device with mechanical elements and optical filters for actuating and/or detecting the movement of the elements

An optomechanical device with mechanical elements and optical filters for actuating and/or detecting movement of the elements, including a support, and on the support: an array of mechanical elements anchored to the support and configured to move with respect thereto, and an actuating and/or detection device actuating the elements and/or detecting movement of the elements or frequency variations of the movement. The actuating and/or detection device includes an array of optical filters. Each filter resonates at a particular wavelength and is coupled to one of the elements. The actuating and/or detecting device is positioned in vicinity of all or some of the elements, between the elements and the support. The optical filters are fixed with respect to the support and the mechanical elements and the optical filters are superimposed.

Method and device for detecting the weight of a load moving on scales

The invention relates to a method for calculating the weight of a load moving on scales (1). According to the method, a load signal of the scales is determined over a period of time using the speed of the load, and several partial load signals (TL1, TL2) are used, the total thereof providing the load signal, a first partial load signal (TL1) displaying a maximum value as long as the load is fully on the weighing section of the scales (1), and a second partial load signal (TL2) displaying a minimum value as long as the load is completely removed from the weighing section of the scales (1), and the speed of the movement of the load is determined from said partial load signals (TL1 and TL2). The invention also relates to scales for carrying out said method, comprising two weighing units (10, 11) with flexible deformation elements on which deformation sensors (7, 15), which generate the partial load signals (TL1,TL2), are arranged.

Flat vibrating measuring string

A flat vibrating measuring string or ribbon suitable for use with a vibrating string weighing apparatus. The cross-section of the string is selected with such a large ratio of the largest to the smallest cross-sectional axis that the resonant frequencies of the desired mth vibrating mode in the direction of the minimum bending rigidity are situated below the resonant frequencies of the first mode in the transverse direction. The string is also enlarged at its ends, preferably by means of interconnecting rounded portions, to minimize the peak stress where the string is clamped. To further minimize the tension at the ends of the string where they are clamped, the string is secured to a junction mass having a resistance and modulus of elasticity which is within an order to magnitude of that of the string.

Corde de mesure vibrant a plat, notamment pour balances a cordevibrant

Piezoelectric crystal microbalance device

A device and a process for measuring resonant frequency and dissipation factor of a piezoelectric resonator are presented. After exciting the resonator to oscillation, the driving power to the oscillator is turned off after the decay of the oscillation of the resonator is recorded and used to give a measure of at least one of the resonators properties, such as dissipation factor, changes in the dissipation factor, resonant frequency and changes in the resonant frequency.

Cell mass measurement and apparatus

Provided herein are sensors and methods for determining properties of single cells, such as cell mass. Sensors disclosed herein include resonant sensors having a suspended platform designed to exhibit a uniform vibration amplitude. Methods are also disclosed for measuring changes in cell mass, changes in cell number, changes in cell viscosity and changes in cell elasticity.

Device for measuring resonant frequency and / or dissipation factor of a piezoelectric crystal microwave

PCT No. PCT/SE96/00576 Sec. 371 Date Sep. 25, 1997 Sec. 102(e) Date Sep. 25, 1997 PCT Filed Apr. 3, 1996 PCT Pub. No. WO96/35103 PCT Pub. Date Nov. 7, 1996A device and a process for measuring resonant frequency and dissipation factor of a piezoelectric resonator are presented. After exciting the resonator to oscillation, the driving power to the oscillator is turned off after the decay of the oscillation of the resonator is recorded and used to give a measure of at least one of the resonators properties, such as dissipation factor, changes in the dissipation factor, resonant frequency and changes in the resonant frequency.

Device for measuring masses

Weighing device with spectral analysis

The invention relates to a weighing device, e.g. for kitchens. It has a support plate (1) for receiving the object to be measured and a controller (16). Furthermore, an excitation element (12) for generating mechanical vibrations in the support plate (1) and a measuring element (14) for measuring the mechanical vibrations of the support plate (1) are provided. The excitation element (12) and the measuring element (14) are used to determine one or more resonance frequencies and/or other spectral characteristics of the support plate (1), and this is used, for example, to determine the mass of the object.

A microfluidic-channel embeddable, laterally oscillating gravimetric sensor device fabricated with micro-electro-mechanical systems (MEMS) technology

측방 진동 중량 감지 장치의 표면 위에 부착된 질량의 변화를 측정하여 생물학적 세포들 및 분석물들을 검출하고, 마이크로-유체 채널들에 내장할 수 있고 마이크로-전자 기계 시스템들(MEMS) 기술로 제조되는 측방 진동 중량 감지 장치는, 4개의 주요 그룹들, 즉 채널의 기저(basis) 위에 배치될 수 있는 공진기, 공진기 바이오-활성의 구성요소들, 마이크로 유체 채널, 및 마이크로가공 기술들로 구성되며, 그것의 주 구성요소들은 프루프 매스(1), 프루프 매스에 고정되는 콤 핑거들(2), 폴디드 스프링 빔들(3), 채널 바닥 및 메카니컬 소일(mechanical soil; 4), 고정 전극들(5), 고정 전극들(6)에 부착된 콤 핑거들, 매스(7) 위에 증착되는 금 필름, 고정된 생물학적 인식 분자들(8) 및 공진기 구조(9) 위에 배치된 마이크로 유체 채널이다. Lateral vibration weight detection measures the change in mass attached to the surface to detect biological cells and analytes, and can be embedded in micro-fluidic channels and made by micro-electromechanical systems (MEMS) technology The vibration gravimetric device consists of four main groups, a resonator which can be placed on the base of the channel, components of the resonator bio-active, microfluidic channel, and micromachining techniques, the The main components are proof mass (1), comb fingers (2) fixed to the proof mass, folded spring beams (3), channel bottom and mechanical soil (4), fixed electrodes (5), fixed Comb fingers attached to electrodes 6, gold film deposited over mass 7, fixed biological recognition molecules 8 and microfluidic channel disposed over resonator structure 9.

Multisensing platform using nanoporous cantilever sensor

The present invention relates to a multi-sensing platform using a nanoporous cantilever sensor comprising: a substrate which is a plate shape; a tip which is formed on a front end of the substrate; and a nanoporous structure which is formed on the tip. A nanoporous cantilever according to the present invention greatly improves detection sensitivity in terms of a material for detection compared with a conventional cantilever by forming nanoporous structure consisting of nanopores and nano-flow channels or the like on the tip and is possible to distinguish molecules for detection because of getting a surface-enhanced Raman signal.

Microbalance System

The present invention relates to a microbalance system. According to the present invention, the microbalance system comprises: an arrangement part (100) which has magnetism on which an object (110) is arranged; a vibrating unit (200) which vibrates the arrangement part (100); and a vibration detecting unit (300) which generates induced currents in accordance with a magnetic flux changed by the vibration of the arrangement part (100) having magnetism. A change in vibration frequency of the arrangement part (100) is calculated using the induced currents generated in the vibration detecting unit (300), and a mass of the object (110) is calculated using the calculated change in the vibration frequency of the arrangement part (100).

Load measuring device for an elevator installation

Eine Aufzugsanlage (1) hat eine Aufzugskabine (6) mit einer Stützkonstruktion (8), die die Aufzugskabine (6) trägt, wobei die Stützkonstruktion (8) zwei Träger (8.1, 8.2) hat. An jedem Träger (8.1, 8.2) ist eine Positionierungsanordnung (30, 31, 72, 74) angebracht, auf denen genau ein Sensor (16, 18) positioniert ist, der jeweils Teil einer Lastmesseinrichtung (15) ist, wobei die Positionierungsanordnungen (30, 31, 72, 74) Materialstrukturen (30.1, 30.2, 31.1, 31.2) bzw. Sensorträger (60, 62, 64, 66) hat. Die Sensoren (16, 18) detektieren eine Abstandsänderung der Material strukturen (30.1, 30.2, 31.1, 31.2) bzw. der Sensorträger (60, 62, 64, 66) zueinander, wobei diese Abstandsänderung durch Änderung einer Zuladung der Aufzugskabine (6) verursacht wird. Signale der Sensoren (16, 18) werden in einer Auswerteeinheit (24) verarbeitet und ein die Zuladung repräsentierendes Signal wird in einer Aufzugssteuerung verwendet.

Apparatus and method for detecting biomolecular mass with an oscillating circuit

발진회로가 적용된 미세 질량 측정 장치 및 방법이 개시되어 있다. 이 개시된 측정 장치는, 피검체가 부착되는 외팔보; 상기 외팔보 위에 구비되는 압전체; 상기 외팔보를 능동적으로 진동시킴과 아울러 피검체로 인한 외팔보의 변화된 공진주파수를 제공하는 발진 회로; 상기 외팔보의 공진주파수를 측정하기 위한 주파수 측정기;를 포함하는 것을 특징으로 한다. 상기 구성에 의해, 단일 압전체를 이용하여 외팔보의 능동 구동과 공진주파수의 측정 모두를 수행하기 때문에 가진기와 공진주파수 변화량을 측정하는 장비가 독립적으로 구비될 필요가 없고, 이에 따라, 측정 장치의 설비가 단순해지고, 미세 외팔보는 MEMS 공정기술을 이용하여 초소형화 할 수 있다.

Method of, and apparatus for, measuring the true contents of a cylinder of gas under pressure.

Se proporciona un método y aparato para medir la masa de un gas bajo presión utilizando un oscilador piezoeléctrico. El gas se contiene en un contenedor (100) a presión que tiene un volumen (V) interno fijo y el oscilador (202) piezoeléctrico se sumerge en el gas dentro del contenedor (100) a presión. El método comprende: a) utilizar el oscilador (202) piezoeléctrico para medir la densidad del gas dentro del contenedor (100) de alta presión; b) determinar, a partir de la medición de densidad y a partir del volumen (V) interno del contenedor a presión, la masa del gas dentro del contenedor (100) a presión. Al proporcionar tal método, el contenido verdadero (es decir, masa) del fluido en un contenedor a presión tal como un cilindro puede medirse directamente sin necesidad de compensar factores tales como temperatura o capacidad de compresión. Esto permite una determinación de masa a través de derivación directa de la densidad del gas en el cilindro, reduciendo la necesidad de sensores adicionales o de que se realicen cálculos complejos.

Force compensator for inertial mass measurement

Aircraft air pollutant collector and usage

Weighing device

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Fine partcles measuring system used by quartz crystal microbalance

본 발명은, 수정진동자 저울을 이용한 미세먼지 측정시스템에 관한 것으로서, 구체적으로는 대기중의 미세먼지 또는 초미세먼지를 측정하는 데 있어서 수정진동자저울(Quartz Crystal Microbalance : QCM)을 적용하여 미세먼지의 질량 또는 질량농도를 정확하게 측정할 수 있도록 구성된 수정진동자저울을 이용한 미세먼지 측정시스템에 관한 것이며, 수정진동자저울에 쌓인 미세먼지의 질량을 측정하는 질량 측정부; 미세 먼지가 쌓인 필터에 조사된 베타선의 감쇄정도를 측정하는 베타선 측정부; 및 상기 질량 측정부에서 측정된 미세먼지의 질량값과 상기 베타선 측정부에서 측정된 베타선 측정값에 따른 미세먼지의 질량값을 비교하여 베타선 측정부의 감도를 교정하는 교정부;를 특징으로 한다.

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A mass determination device includes a combination of an elastic element connected with a mass holder. The combination has a normalized temperature coefficient of frequency substantially equal to zero over a temperature range of intended use for the mass determination device, whereby mass determination accuracy of the device during temperature change in the range is enhanced. The elastic element has a first normalized temperature coefficient of frequency over the temperature range. A second normalized temperature coefficient of frequency over the temperature range attributable to the mass holder is determined. The first normalized temperature coefficient and the second normalized temperature coefficient are substantially counterbalanced over the temperature range, for example, through material selection and/or heat treatment of the elastic element and/or material or geometry variation of the mass holder.

Weight measuring system considering changes of speed and lane and method thereof

본 발명은 주행 중인 차량의 무게측정시스템 및 그 측정방법에 관한 것으로 특히 화물차량이 일정한 속도로 차선에 맞게 진행하는 것이 아니라 속도를 달리하면서 차선을 변경하는 경우 차선의 변경을 감지를 하고 보다 정확하게 차량의 무게를 측정할 수 있는 시스템과 그 측정방법에 관한 것이다. 본 발명은 차량의 가속과 감속뿐만 아니라 다중 차선에서의 진행차량의 차선의 변경으로 인한 오차율을 극복하기 위한 차량의 무제측정시스템 및 그 측정방법을 제공함에 목적이 있다. 즉 본 발명에서는 주행변경 과정을 추적한 데이터에서 주행패턴을 분석하고 종전에 제시하였던 오차보정함수에 추가적인 좌우측 편중 보정함수를 보완하여 측정오차를 최소화한다. 상기한 목적을 실현하기 위하여 본 발명은 적어도 2개 이상의 차선을 가진 도로상의 각 차선에 있어서, 두 개 이상으로 세로로 나란히 배치되어 일정한 간격을 두고 배치된 3개의 피에조센서 그룹(P10, P20, P30)과, 상기 피에조센서그룹을 중심으로 외측으로 일정한 간격을 두고 설치된 한 쌍의 루프센서그룹(L10, L20), 상기 한 쌍의 루프센서그룹(L10, L20)의 외측으로 일정한 간격을 두고 설치된 한 쌍의 피에조센서그룹(P40, P50), 상기 한 쌍의 피에조센서그룹(P40, P50) 외측으로 일정한 간격을 두고 설치된 한 쌍의 루프센서그룹(L30, L40), 상기 피에조센서그룹과 루프센서그룹들로부터 획득되는 정보를 입력받아 차량의 진행 속도와 진행각도와 가속도와 무게를 연산하고 차량의 좌우측의 바퀴에 편중된 무게의 값을 보정하여 차량의 무게를 산정하는 방식을 포함하는 기능을 가진 서버를 포함하는 것을 특징으로 한다. 또한 방법적인 측면에서는, 일정한 간격으로 배치되어 있는 다수개의 루프센서그룹들로부터 차량 통과시 발생되는 신호를 획득하는 단계와, 일정한 간격으로 배치되어 있는 다수개의 피에조센서그룹들로부터 차량이 통과시 차량의 바퀴로 부터 무게에 대한 정보를 획득하는 단계와, 상기 피에조 센서그룹들로 부터 획득된 무게 신호에서 무게의 편중을 판단하는 단계와, 비정상 패턴으로 인한 것으로 판단이 될 경우 좌우측 휠의 편중 보정된 계수를 단정하는 단계와, 상기 보정계수를 이용한 좌우측 휠의 보정계수를 곱하여 각 휠에 대한 무게를 산정하고 각 무게를 합산하여 차량의 무게를 산정하는 단계가 제공되는 것을 특징으로 한다.

Load detector

(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。

AEROSOL WEIGHT SENSOR AND MEASUREMENT METHOD

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 100 035 A (51) МПК G01N 5/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017100035, 10.06.2015 (71) Заявитель(и): КОНИНКЛЕЙКЕ ФИЛИПС Н.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): КАРАКАЯ Корай (NL) 10.06.2014 EP 14171818.9 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 10.01.2017 R U (43) Дата публикации заявки: 10.07.2018 Бюл. № 19 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2015/189230 (17.12.2015) R U (54) ДАТЧИК МАССЫ АЭРОЗОЛЯ И СПОСОБ ИЗМЕРЕНИЯ (57) Формула изобретения 1. Устройство для обработки воздуха, содержащее: датчик массы для измерения массы частиц в аэрозоле, содержащий: - чувствительный элемент (32); - нагревательный элемент (38) для нагрева чувствительного элемента; - преобразовательный элемент (34) для введения чувствительного элемента в резонанс и обнаружения резонансной частоты чувствительного элемента, при этом резонансная частота зависит от массы частиц, осажденных на чувствительном элементе; и - контроллер (36) для управления нагревательным элементом и отслеживания изменения массы во время нагрева на основе обнаруженного изменения резонансной частоты; при этом контроллер (36) дополнительно выполнен с возможностью: сравнения информации об изменении массы с информацией, хранимой в таблице соответствия, чтобы идентифицировать события генерирования аэрозоля и ожидаемые распределения частиц по размерам для идентифицированных событий; и управления устройством для обработки воздуха в зависимости от идентифицированных событий генерирования аэрозоля и соответствующих распределений размеров частиц. 2. Устройство по п.1, в котором контроллер (36) дополнительно выполнен с возможностью: Стр.: 1 A 2 0 1 7 1 0 0 0 3 5 A Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" 2 0 1 7 1 0 0 0 3 5 EP 2015/062872 (10.06.2015) A 2 0 1 7 1 0 0 0 3 5 A R U 2 0 ...

Mass sensor and mass detection method

A piezoelectric/electrostrictive device in which a fixing plate (31) is joined a connection plate (33) each other at their sides, a diaphragm (32) with a piezoelectric element (35) set on one plane of it is joined to the connection plate (33) at their sides in the direction perpendicular to the direction of joining between the fixing plate (31) and the connection plate (33), at least some sides of the connection plate (33) and the diaphragm (32) are joined to a substrate (34). A voltage is applied to the piezoelectric element (35) to displace the fixing plate (31) or the displacement amount of the fixing plate (31) is measured by measuring the electromotive force of the piezoelectric element (35) according to the displacement. The piezoelectric/electrostrictive device converts electrical energy into mechanical energy such as mechanical displacement, force, or vibration and vice versa, and thus it is preferably used as a vibrator, resonator, oscillator, or discriminator for communication or motive power or as an ultrasonic sensor or acceleration sensor. <IMAGE> <IMAGE> <IMAGE>

DIGITALLY INDICATING VAG

MASS AND FORCES MEASURING DEVICE

a. Secteur technique : appareil de mesure et des forces comprenant un bâti, un porteur de charge et un système de mesure, dans lequel la grandeur à mesurer agit indirectement sur la tension de deux cordes vibrantes, pré-tendues et excitées par des moyens électriques, leurs variations de fréquence dues à l'action de cette grandeur étant utilisées pour le calcul de la valeur de cette grandeur dans un dispositif de calcul, les deux cordes, un premier organe de transmission de la force de pré-tension et un second organe de transmission d'une force fonction de ladite grandeur étant fixés à un distributeur de forces guidé par les cordes et au moins un organe de guidage de manière statiquement définie par rapport aux forces de pré-tension et de mesure et par rapport au bâti. b. Caractéristique principale de l'invention : l'organe de guidage est encastré dans le bâti et dans le distributeur, il est élastique, soumis à une pré-tension de flexion et il transmet des moments, de manière à engendrer la force de pré-tension et à la transmettre au distributeur. c. Principales applications de l'invention : balances et dynamomètres.

Apparatus and method of transporting flats across a scale

A mechanism for transporting flat articles, such as envelopes, onto and across the tray of a scale. A belt is trained about a combination of rollers received within slots of the tray which in combination with clamps supported by the tray are used to transport a flat onto the weighing scale. When a flat is to be weighed, it is transported onto the tray, the rollers are withdrawn below the tray by the belt and the clamps hold the flat securely against the tray. The tray is then oscillated and the weight of the flat is determined from the harmonic period of oscillation. Upon completion of weighing, the belt is placed into contact with the flat and rotated to remove the flat from the tray.

Dynamometric transducer with FM output signal - has elastic element in casing mounted by its foot held on three pins engaging in groove

The elastic element effective path to which the force is applied, is connected with an oscillating element. The oscillating element forms the resonator of an electromechanical self-excited generator whose frequency is a function of the applied force. The elastic element is mounted in a casing (1) with a clearance, and its foot is fastened by three pins (8). The sharp points (9) of the pins press against the surface of the foot and the other end (10) is attached to the casing (1).

SEPARATE DYNANOMETER WEIGHING DEVICE AND READER

L'INVENTION SE PROPOSE DE STANDARDISER UN TYPE UNIQUE DE CONSOLE AVEC CALCULATEUR ET AFFICHAGE SUR LAQUELLE ON PUISSE CONNECTER DES DYNAMOMETRES DE PESEE DE TYPES, CAPACITES ET SENSIBILITES DIFFERENTS. A CHACUN DES DYNAMOMETRES 11, CONNECTABLE EST INCORPOREE, DE FACON SCELLEE, UNE MEMOIRE INFALSIFIABLE, TELLE QUE MEMOIRE MORTE EPROM, CONTENANT DES INFORMATIONS SUR DES CONSTANTES CARACTERISTIQUES DU DYNAMOMETRE 11 A PRENDRE EN COMPTE PAR LE CALCULATEUR DE LA CONSOLE 12 SIMULTANEMENT AVEC LES INDICATIONS DIRECTES DES CAPTEURS DE MESURE DU DYNAMOMETRE 11 ET LES DONNEES DE PRIXMASSE TAPEES SUR UN CLAVIER 55. THE INVENTION PROPOSES TO STANDARDIZE A SINGLE TYPE OF CONSOLE WITH A COMPUTER AND DISPLAY TO WHICH WE CAN CONNECT WEIGHING DYNAMOMETERS OF DIFFERENT TYPES, CAPACITIES AND SENSITIVITIES. IN EACH OF THE DYNAMOMETERS 11, CONNECTABLE IS INCORPORATED, IN A SEALED WAY, AN INFALSIFIABLE MEMORY, SUCH AS DEAD MEMORY EPROM, CONTAINING INFORMATION ON THE CHARACTERISTIC CONSTANTS OF THE DYNAMOMETER 11 TO BE TAKEN INTO ACCOUNT BY THE CALCULATOR OF THE DIRECTAN CONSOLE WITH THE 12 SIMULATOR INDICATIONS DYNAMOMETER 11 MEASUREMENT SENSORS AND MASS PRICE DATA TAPED ON A KEYPAD 55.

DEVICE FOR DETERMINING THE MASS OF A PARTICLE IN SUSPENSION OR SOLUTION IN A FLUID

DEVICE FOR THE GRAVIMETRIC DETECTION OF PARTICLES IN A FLUID ENVIRONMENT, COMPRISING AN OSCILLATOR CROSSED BY A FLUIDIC VEIN, METHOD FOR PRODUCING THE SAME, AND METHOD FOR IMPLEMENTING THE DEVICE

MECHANISM FOR CONVERTING A WEIGHT INTO A FREQUENCY

L'INVENTION CONCERNE LES TECHNIQUES DE CONVERSION D'UN POIDS EN UNE FREQUENCE. UN MECANISME DESTINE A CONVERTIR UN POIDS EN UNE FREQUENCE AU MOYEN D'UN VIBREUR A DIAPASON 1 COMPORTE NOTAMMENT UN LEVIER 10 SUPPORTE PAR UNE PARTIE DE BASE 11 AU NIVEAU D'UN POINT D'APPUI 13. UNE EXTREMITE DU LEVIER EST ACCOUPLEE AU DIAPASON ET SON AUTRE EXTREMITE EST ACCOUPLEE A UNE PARTIE DE RECEPTION DE POIDS 16 DESTINEE A RECEVOIR UN POIDS A MESURER. LE LEVIER TRANSFERE AU VIBREUR A DIAPASON LE POIDS QUI EST APPLIQUE A LA PARTIE DE RECEPTION DE POIDS. TOUS LES ELEMENTS DU MECANISME SONT FORMES D'UN SEUL TENANT A PARTIR D'UNE SEULE PLAQUE. APPLICATION AUX APPAREILS DE PESEE. THE INVENTION CONCERNS TECHNIQUES FOR CONVERTING A WEIGHT TO A FREQUENCY. A MECHANISM INTENDED TO CONVERT A WEIGHT INTO A FREQUENCY BY MEANS OF A DIAPASON VIBRATOR 1 INCLUDES IN PARTICULAR A LEVER 10 SUPPORTED BY A BASE PART 11 AT THE LEVEL OF A SUPPORT POINT 13. ONE END OF THE LEVER IS COUPLED TO THE DIAPASON AND ITS OTHER END IS COUPLED TO A WEIGHT RECEPTION PART 16 FOR RECEIVING A WEIGHT TO BE MEASURED. THE LEVER TRANSFERS TO THE DIAPASON VIBRATOR THE WEIGHT APPLIED TO THE WEIGHT RECEPTION PART. ALL THE ELEMENTS OF THE MECHANISM ARE SHAPED BY ONE SINGLE FROM A SINGLE PLATE. APPLICATION TO WEIGHING EQUIPMENT.

ELECTRONIC CIRCUIT FOR MEASURING MASS OF BIOLOGICAL MATERIAL AND METHOD OF MANUFACTURE

DOUBLE DIAPASON SHEET FORCE TRANSDUCER, MANUFACTURING METHOD THEREOF, AND APPLICATION THEREOF IN A LOAD CELL

MASS AND FORCES MEASURING DEVICE

WEIGHING DEVICE WITH SINGLE VIBRATING ROPE

FORCE MEASURING DEVICE

DISPOSITIF DE MESURE DE FORCE COMPRENANT UN ELEMENT PRINCIPAL ELASTIQUE EN PORTE A FAUX ET UN ELEMENT AUXILIAIRE ELASTIQUE EN PORTE A FAUX ESPACES PARALLELEMENT L'UN DE L'AUTRE, CES ELEMENTS ETANT CONCUS DE FACON A RECEVOIR UNE FORCE A MESURER A LEUR EXTREMITE LIBRE, UN FIL TENDU ENTRE LES EXTREMITES LIBRES DESDITS ELEMENTS PRINCIPAL ET AUXILIAIRE ET DES MOYENS POUR MESURER LA FREQUENCE DE VIBRATION DUDIT FIL ET POUR CALCULER, A PARTIR DE CETTE FREQUENCE, L'AMPLITUDE DE LA FORCE A MESURER, CE DISPOSITIF ETANT CARACTERISE EN CE QU'IL COMPREND UN DETECTEUR DE TEMPERATURE 14 DISPOSE A PROXIMITE DE L'UN AU MOINS DESDITS ELEMENTS ELASTIQUES PRINCIPAL ET AUXILIAIRE 1, 5 DE MANIERE A FOURNIR UNE INFORMATION T SUR LA TEMPERATURE DUDIT ELEMENT, DES MOYENS 16 POUR CALCULER A PARTIR DE LADITE INFORMATION, UNE VALEUR DE COMPENSATION DD CORRESPOND A LADITE TEMPERATURE ET DES MOYENS 17 POUR CORRIGER LADITE AMPLITUDE DE FORCE A L'AIDE DE LADITE VALEUR DE COMPENSATION. FORCE MEASURING DEVICE INCLUDING AN ELASTIC MAIN ELEMENT IN AN OVERWHELD GATE AND AN ELASTIC AUXILIARY ELEMENT IN FALSE-SPACED DOOR IN PARALLEL OF THE OTHER, THESE ELEMENTS BEING DESIGNED SO AS TO RECEIVE A FORCE TO BE MEASURED AT THEIR FREE END, A WIRE TENSION BETWEEN THE FREE ENDS OF THE SAID MAIN AND AUXILIARY ELEMENTS AND MEANS FOR MEASURING THE FREQUENCY OF VIBRATION OF THE SAID WIRE AND FOR CALCULATING, FROM THIS FREQUENCY, THE AMPLITUDE OF THE FORCE TO BE MEASURED, THIS DEVICE BEING CHARACTERIZED AS ' IT INCLUDES A TEMPERATURE DETECTOR 14 AVAILABLE CLOSE TO AT LEAST ONE OF SAID MAIN AND AUXILIARY ELASTIC ELEMENTS 1, 5 SO AS TO PROVIDE INFORMATION T ON THE TEMPERATURE OF SAID ELEMENT, MEANS 16 FOR CALCULATING FROM THE SAID INFORMATION, A COMPENSATION VALUE DD CORRESPONDS TO THE SAID TEMPERATURE AND THE MEANS 17 FOR CORRECTING THE SAID AMPLITUDE OF FORCE USING THE SAID COMPENSATION VALUE.

INSTALLATION FOR DETERMINING THE WEIGHT OF MATERIALS TRANSPORTED

Weighing system using conveyor belt

在此披露了一种输送带和一种用于对输送带上输送的物品进行称重的称重系统。该带包括被嵌入该带中以测量垂直于该带的输送表面的力的力感测元件阵列。这些力感测元件形成多个无源谐振电路的一部分，这些无源谐振电路各自包括电容器和电感线圈。该电容器或电感线圈可以是力敏元件。在该带外部的多个测量电路包括振荡器，该振荡器具有在该带贴近经过时电感地耦合该带中的谐振电路的线圈。在力敏元件处施加至该带的力改变其谐振电路的谐振频率，还改变该振荡器的频率。这些测量电路中的频率检测器测量此频率变化并且将其转换成用于计算所输送物品的重量的成比例的力值。

METHOD AND APPARATUS FOR MEASURING MASS AND BALANCE.

Device allowing the filling at the same net weight of receptacles with variable tares

DEVICE FOR MASS DETECTION OF PARTICLES IN A FLUID MEDIUM AND METHOD FOR IMPLEMENTING SAME

METHOD AND DEVICE FOR DETERMINING AT LEAST ONE INERTIAL CHARACTERISTIC OF AN OBJECT

Un procédé (160) de détermination d'au moins une caractéristique inertielle d'un objet (44, 114) comprend les étapes de : actionner un dispositif d'actionnement (50, 119) de manière à imprimer à un ensemble plateau-objet (45, 115) au moins un mouvement périodique selon au moins une direction de translation, et mesurer par au moins un capteur (125, 49) au moins une composante d'une force subie par l'ensemble plateau-objet (45, 115) dans une même direction que ladite au moins une direction de translation pour au moins un point de mesure d'une période du mouvement périodique du plateau (43, 113) ; et calculer au moins une masse de l'objet et/ou une position du centre de gravité de l'objet. A method (160) of determining at least one inertial characteristic of an object (44, 114) comprises the steps of: actuating an actuating device (50, 119) so as to print to a tray-object assembly ( 45, 115) at least one periodic movement in at least one direction of translation, and measuring by at least one sensor (125, 49) at least one component of a force undergone by the tray-object assembly (45, 115) in the same direction as said at least one direction of translation for at least one measurement point of a period of the periodic movement of the plate (43, 113); and calculating at least one mass of the object and / or a position of the center of gravity of the object.

WEIGHING SYSTEM

DISPOSITIF DE PESEE QUI COMPREND UNE UNITE DE PESEE COMPORTANT UNE PERIODE DE VIBRATIONS NATURELLES QUI VARIE AVEC LE POIDS DU PRODUIT A PESER ET QUI DELIVRE UN SIGNAL ELECTRIQUE CORRESPONDANT AUDIT POIDS, UN INTEGRATEUR POUR EFFECTUER L'INTEGRATION DUDIT SIGNAL ELECTRIQUE PENDANT UN INTERVALLE DE TEMPS SPECIFIQUE ET UNE UNITE DE CALCUL POUR REALISER LA MOYENNE DU RESULTAT DE LADITE INTEGRATION PAR LEDIT INTERVALLE DE TEMPS, AFIN DE DELIVRER UN POIDS MESURE, CARACTERISE EN CE QUE LE DISPOSITIF COMPORTE EN OUTRE DES MOYENS 8 POUR CALCULER LEDIT INTERVALLE DE TEMPS SPECIFIQUE EN TANT QUE VALEUR EGALE A LADITE PERIODE DE VIBRATION NATURELLE OU A UN MULTIPLE ENTIER DE CETTE PERIODE, CORRESPONDANT AU POIDS MESURE ET POUR APPLIQUER LADITE VALEUR DUDIT INTEGRATEUR 4 ET A L'UNITE DE CALCUL POUR L'UTILISATION SUIVANTE. WEIGHING DEVICE WHICH INCLUDES A WEIGHING UNIT COMPRISING A PERIOD OF NATURAL VIBRATIONS WHICH VARY WITH THE WEIGHT OF THE PRODUCT TO BE WEIGHED AND WHICH PROVIDES AN ELECTRICAL SIGNAL CORRESPONDING TO SAID WEIGHT, AN INTEGRATER FOR PERFORMING THE INTEGRATION OF SAID ELECTRICAL SIGNAL DURING AN INTERVAL AND A CALCULATION UNIT FOR ACHIEVING THE AVERAGE OF THE RESULT OF THE SAME INTEGRATION BY SAID TIME INTERVAL, IN ORDER TO DELIVER A MEASURED WEIGHT, CHARACTERIZED IN THAT THE DEVICE HAS ADDITIONAL MEANS 8 TO CALCULATE SAID SPECIFIC TIME INTERVAL EQUAL TO THE SAID NATURAL VIBRATION PERIOD OR TO AN ENTIRE MULTIPLE OF THIS PERIOD, CORRESPONDING TO THE MEASURED WEIGHT AND TO APPLY THE SAME VALUE OF SAID INTEGRATER 4 AND TO THE CALCULATION UNIT FOR THE FOLLOWING USE.

MASS AND FORCE MEASUREMENT APPARATUS

DEVICE FOR SUPPLYING GAS

Dispositif (100) de fourniture de gaz comprenant un cadre (1) muni d'une base et abritant une pluralité de bouteilles (2) de fluide sous pression reliées à circuit (7) fluidique comprenant une première extrémité de raccordement reliée aux bouteilles et une seconde extrémité comprenant au moins un raccord (10) fluidique destiné à être raccordé de façon amovible avec un organe de soutirage ou de remplissage des bouteilles (2), le cadre (1) comprenant, sur une de ses faces, au moins une ouverture (20) d'accès à au moins un raccord (10) du circuit (7), le cadre (1) comprenant en outre au moins un organe (16, 150) d'accrochage prévu pour coopérer avec un appareil de levage du cadre (1), caractérisé en ce que le dispositif comprend au moins un capteur (110) de levage du cadre (1) via le au moins un organe (16, 160) d'accorchage et au moins un capteur (41) de détection d'un accès à un raccord (10), le dispositif comprenant en outre au moins un organe (120, 130, 140) d'alerte configuré générer automatiquement une alerte lorsqu'à la fois le capteur (110) de levage détecte un levage du cadre et le capteur (41) de détection d'accès détecte un accès à un raccord (10). Device (100) for supplying gas comprising a frame (1) provided with a base and housing a plurality of cylinders (2) of pressurized fluid connected to a fluidic circuit (7) comprising a first connection end connected to the cylinders and a second end comprising at least one fluid connector (10) intended to be removably connected with a member for tapping or filling the bottles (2), the frame (1) comprising, on one of its faces, at least one opening ( 20) for access to at least one connector (10) of the circuit (7), the frame (1) further comprising at least one hooking member (16, 150) provided to cooperate with a lifting device for the frame ( 1), characterized in that the device comprises at least one sensor (110) for lifting the frame (1) via the at least one coupling member (16, ...

Patent FR2073026A5

METHOD AND DEVICE FOR DETERMINING AT LEAST ONE INERTIAL CHARACTERISTIC OF AN OBJECT

Un procédé (160) de détermination d'au moins une caractéristique inertielle d'un objet (44, 114) comprend les étapes de : actionner un dispositif d'actionnement (50, 119) de manière à imprimer à un ensemble plateau-objet (45, 115) au moins un mouvement périodique selon au moins une direction de translation, et mesurer par au moins un capteur (125, 49) au moins une composante d'une force subie par l'ensemble plateau-objet (45, 115) dans une même direction que ladite au moins une direction de translation pour au moins un point de mesure d'une période du mouvement périodique du plateau (43, 113) ; et calculer au moins une masse de l'objet et/ou une position du centre de gravité de l'objet. A method (160) for determining at least one inertial characteristic of an object (44, 114) comprises the steps of: actuating an actuator (50, 119) so as to print to a tray-object assembly ( 45, 115) at least one periodic movement in at least one direction of translation, and measure by at least one sensor (125, 49) at least one component of a force undergone by the plate-object assembly (45, 115) in the same direction as said at least one direction of translation for at least one point of measurement of a period of the periodic movement of the plate (43, 113); and calculating at least one mass of the object and / or a position of the center of gravity of the object.

MECHANISM FOR CONVERTING A WEIGHT INTO A FREQUENCY

METHOD AND MEASURING APPARATUS FOR DETERMINING THE SOLID CHARGE OF A CENTRIFUGAL DRUM

L'INVENTION CONCERNE UN PROCEDE ET UN APPAREIL DE MESURE POUR DETERMINER LA CHARGE EN MATIERE SOLIDE DU TAMBOUR D'UNE CENTRIFUGEUSE. LE PROCEDE EST CARACTERISE EN CE QU'UN SYSTEME MECANIQUE OSCILLANT SE COMPOSANT DU TAMBOUR DE CENTRIFUGEUSE 4, M ET D'UNE MASSE ADDITIONNELLE M; 24; 46; 38, ACCOUPLEE AU TAMBOUR 4, M, EST MIS EN OSCILLATIONS PROPRES ET LA FREQUENCE DES OSCILLATIONS PROPRES, QUI EST FONCTION DE LA CHARGE EN MATIERE SOLIDE, OU BIEN UNE GRANDEUR POUVANT ETRE DERIVEE DE LA FREQUENCE, SONT MESUREES ET ANALYSEES EN CE QUI CONCERNE LA CHARGE EN MATIERE SOLIDE. APPLICATION A DES INSTALLATIONS DE RETRAITEMENT DE COMBUSTIBLES NUCLEAIRES. THE INVENTION RELATES TO A METHOD AND A MEASURING APPARATUS FOR DETERMINING THE SOLID MATERIAL LOAD OF THE DRUM OF A CENTRIFUGE. THE PROCESS IS CHARACTERIZED IN THAT AN OSCILLATING MECHANICAL SYSTEM CONSISTING OF THE CENTRIFUGE DRUM 4, M AND AN ADDITIONAL MASS M; 24; 46; 38, COUPLED TO DRUM 4, M, IS SET IN OWN OSCILLATIONS AND THE FREQUENCY OF OWN OSCILLATIONS, WHICH IS A FUNCTION OF THE LOAD OF SOLID MATTER, OR ANY QUANTITY THAT CAN BE DERIVED FROM THE FREQUENCY, ARE MEASURED AND ANALYZED WITH RESPECT THE LOAD OF SOLID MATTER. APPLICATION TO NUCLEAR FUEL PROCESSING PLANTS.

Patent FR2340543B1

Balance

Patent FR2288301B1

DOUBLE DIAPASON SHEET FORCE TRANSDUCER, MANUFACTURING METHOD THEREOF, AND APPLICATION THEREOF IN A LOAD CELL

Transducteur de force en forme de double diapason, comportant deux branches identiques parallèles 2A, 2B solidaires en leurs extrémités de deux éléments de couplage 4, 5, adaptées à vibrer en flexion, en opposition de phase, en réponse à des sollicitations vibratoires imposées, avec une fréquence propre représentative de l'amplitude d'un effort F appliqué longitudinalement aux éléments de couplage, caractérisé en ce qu'il est feuilleté, comportant deux lamelles élastiques identiques 10, 11 maintenues écartées en leurs extrémités 3A, 3B, 3'A, 3'B par deux entretoises 8, 9 ayant l'une et l'autre la même épaisseur, ces entretoises et ces extrémités étant solidarisées au sein desdits éléments de couplage.

MEASURING METHOD AND APPARATUS FOR DETERMINING THE SOLID LOAD OF A CENTRIFUGAL DRUM

Patent FR2181942A1

Patent FR2340539B2

SUPPORT FOR THIN ELEMENT, QUARTZ MICROBALANCE COMPRISING SUCH A SUPPORT AND SAMPLE HOLDER COMPRISING SUCH A SUPPORT

DEVICE FOR THE GRAVIMETRIC DETECTION OF PARTICLES IN A FLUID MEDIA COMPRISING AN OSCILLATOR BETWEEN TWO FLUIDIC CHANNELS, A METHOD FOR PRODUCING THE SAME, AND METHOD FOR THE IMPLEMENTATION OF THE DEVICE

System for managing of bulk liquids and/or solids

Gas supply device

Dispositif (100) de fourniture de gaz comprenant un cadre (1) muni d'une base et abritant une pluralité de bouteilles (2) de fluide sous pression reliées à circuit (7) fluidique comprenant une première extrémité de raccordement reliée aux bouteilles et une seconde extrémité comprenant au moins un raccord (10) fluidique destiné à être raccordé de façon amovible avec un organe de soutirage ou de remplissage des bouteilles (2), le cadre (1) comprenant, sur une de ses faces, au moins une ouverture (20) d'accès à au moins un raccord (10) du circuit (7), le cadre (1) comprenant en outre au moins un organe (16, 150) d'accrochage prévu pour coopérer avec un appareil de levage du cadre (1), caractérisé en ce que le dispositif comprend au moins un capteur (110) de levage du cadre (1) via le au moins un organe (16, 160) d'accorchage et au moins un capteur (41) de détection d'un accès à un raccord (10), le dispositif comprenant en outre au moins un organe (120, 130, 140) d'alerte configuré générer automatiquement une alerte lorsqu'à la fois le capteur (110) de levage détecte un levage du cadre et le capteur (41) de détection d'accès détecte un accès à un raccord (10). Apparatus (100) for supplying gas comprising a frame (1) provided with a base and housing a plurality of fluid pressure bottles (2) connected to a fluidic circuit (7) comprising a first connection end connected to the bottles and a second end comprising at least one fluidic connection (10) intended to be connected in a detachable manner to a bottle filling or filling member (2), the frame (1) comprising, on one of its faces, at least one opening ( 20) for access to at least one connector (10) of the circuit (7), the frame (1) further comprising at least one fastening member (16, 150) adapted to cooperate with a frame lifting device ( 1), characterized in that the device comprises at least one frame lifting sensor (110) (1) via the at least one coupling member (16, 160) and at least ...

MASS AND FORCES MEASURING DEVICE

Method of, and apparatus for, measuring the true contents of a cylinder of gas under pressure

本发明提供一种用于使用压电振荡器来测量加压气体的质量的方法和设备。气体容纳在具有固定的内部容积(V)的压力容器(100)内，并且压电振荡器(202)浸没在压力容器(100)内的气体中。方法包括：a)使用所述压电振荡器(202)来测量高压力容器(100)内的气体的密度；b)根据密度测量结果和所述压力容器的内部容积(V)来确定压力容器(100)内的气体的质量。通过提供这种方法，可直接测量诸如罐的压力容器中的流体的真实含量(即，质量)，而不需要补偿诸如温度或可压缩性的因数。这允许通过直接根据罐中的气体的密度进行推导来确定质量，从而减少对额外的传感器或要执行的复杂计算的需要。

Methods and apparatus for monitoring deposit formation in gas systems

Solids deposition in a gas environment, such as a gas transmis-sion line or pipeline are measured using metal-coated quartz crystal microbal-ance (QCM) in a QCM probe within a high pressure gas chamber in the gas en-vironment. The metal coated on the QCM may be iron, iron alloys and/or iron oxide. The weight measurements are conducted at a constant (.DELTA.T) or controlled (T = f(t)) temperature between the high pressure gas chamber and the QCM probe. The weight gain during a CE cycle is associated with the solids formation rate.

Method for determining roof load mounted in vehicle e.g. motor car, involves comparing measurement waveform of detected vehicle vibrations with characteristic measured quantity to determine roof load on vehicle

The method involves detecting measurement signal modulated by the roof load (1) using a sensor (4). The roof load characteristic measured quantity is derived from the measurement signal. The vehicle is excited and vibrations are detected. The measurement waveform of the detected vehicle vibrations is compared with the characteristic measured quantity to determine the roof load on the vehicle (3).

Aircraft air pollutant analyzer and usage

MASS AND FORCE METER.

Detection sensor

It is an object of the present invention to provide a technique that can realize improvement of sensitivity of a vibrator. A platform 50 to which a substance adheres or sticks is provided to be mechanically coupled to a vibrator 20 of a sensor via bridges 51. Sensitivity of the sensor is improved by causing the mass of a substance adhering or sticking onto the platform 50 as if the substance concentratedly adheres or sticks to places where the platform 50 is connected to the vibrator 20. It is preferable to connect, via the bridges 51, the platform 50 to places where the platform 50 vibrates integrally with the vibrator 20. For this purpose, it is preferable to mechanically couple, via the bridges 51, the platform 50 to regions where vibration occurs only in one of an r direction or a θ direction in the vibrator 20.

Sensor, detecting method, and sensor manufacturing method

Circuit for measuring the resonance frequency of nanoresonators

Electronic bathroom scale apparatus using planar coil sensors

An electronic bathroom scale employs a low profile planar coil position sensor which responds to the positioning of a pivotable lever system. The levers are coupled to a platform which moves in the vertical direction as a weight is placed upon the top or supporting platform of the scale. The sensor provides variable amplitude or frequency proportional to the weight on the scale. The output signal is processed so that a direct reading of the weight is displayed by means of a digital display. The circuitry described serves to compensate for the nonlinearity of the transducer while further providing other compensation to eliminate environmental effects such as temperature and other factors from affecting the direct display of weight.

A microfluidic-channel embeddable, laterally oscillating gravimetric sensor device fabricated with micro-electro-mechanical systems (mems) technology

Laterally oscillating gravimetric sensing device embeddable under micro- f luidic channels and fabricated with micro-electro mechanical systems (MEMS) technology, which detects biological cells and analytes by measuring the change of mass attached on its surface is composed of four main groups, namely a resonator that can be placed onto the basis of the channel, components of the resonator bio-activation, a micro f luidic channel, and the microfabrication techniques, and its main components are the proof mass (1), comb fingers fixed to proof mass (2), folded spring beams (3), channel floor and mechanical soil (4), stationary electrodes (5), comb fingers attached to the stationary electrodes (6), golden film deposited onto the mass (7), immobilized biologic recognition molecules (8), and micro fiuidic channel placed on resonator structure (9).