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171results about How to "Accurate and reliable measurement" patented technology

Angular position sensor for a downhole tool

Aspects of this invention include a downhole tool having an angular position sensor disposed to measure the relative angular position between first and second members disposed to rotate about a common axis. A plurality of magnetic field sensors are deployed about the second member and disposed to measure magnetic flux emanating from first and second magnets deployed on the first member. A controller is programmed to determine the relative angular position based on magnetic measurements made by the magnetic field sensors. In a one exemplary embodiment, a downhole steering tool includes first and second magnets circumferentially spaced on the shaft and a plurality of magnetic field sensors deployed about the housing.
Owner:SCHLUMBERGER TECH CORP

Method for determining the profile depth of a tire and/or a tire characteristic, and a tire

A method used for determining a profile depth or wear on a tread of a tire of a vehicle, and / or a tire characteristic, a magnetic field being detected by a magnetic field sensor disposed in the interior of the tire, particularly in the area of the tread on the tire interior, or at a distance from the tire, particularly in the area of a wheel housing or a wheel well of the vehicle, the magnetic field being transmitted or changed by at least one indicator element disposed in the tread on the tire exterior. The current wear state of the tread and / or the tire characteristic, particularly a tire type and / or permissible top speed, is determined based on output signals of the magnetic field sensor. The invention further relates to tires.
Owner:CONTINENTAL TEVES AG & CO OHG

Dual-algorithm mode farm machinery field operation area calculating system and method

The invention relates to a dual-algorithm mode farm machinery field operation area calculating system and method. The system comprises a vehicle-mounted terminal device and a server module. The vehicle-mounted terminal device is internally provided with a GPS module for positioning the position of a farming machine during an operation driving process, a GPRS module for sending together position data and a time corresponding to each position point to the server module through a wireless network and receiving a calculating result of a server, and a controller for controlling the GPS module and the GPRS module, controlling a display result, and controlling historical data storage and scheduling, wherein the GPS module, the GPRS module and a display are connected with the controller, and the GPRS module communicates with the server through a GPRS wireless network. The server module is responsible for calculating a related result. According to the invention, the modes of two algorithms, i.e., a finite element method and a locus method, are simultaneously utilized, the actual land area of a farm filed operation area and the area of the farming machine driving in the operation area are calculated, operation cost for payment is given according to calculated areas, and at the same time, the result of a driving locus is stored in the form of a picture, so that farming machine drivers and farmers can know detailed driving situations conveniently.
Owner:吴晓伟 +1

Method For Measuring The Overall Operational Performance Of Hydrocarbon Facilities

A method, named Juran Hydrocarbons Index (JHI), for measuring the overall competitiveness of an oil and gas facility (i.e. platform, pipeline, marine terminal, processing terminal, refinery, or LNG plant) that incorporates operational efficiency and effectiveness. The method describes a plurality of performance metrics that reflect measurable properties of an oil & gas organization. It further calculates the percentage deviation of these metrics relative to the corresponding industry or peer group average and assins weights of importance in the form of gap cofficients. Finally, it integrates all the individual performances into a mathematical equation to provide a numerical value (an index) of overall hydrocarbons competitiveness.
Owner:JURAN INST

Apparatus and method for measuring the insulation resistance of a fuel cell system

A measuring device to measure the insulation resistance (Riso) of a fuel cell system with respect to an electrical ground point comprises a resistor arrangement—formed by a series connection of reference resistors—between two load-current lines of the fuel cell system as well as one reference voltage source, which is arranged between the ground point and a node between the reference resistors and which is switchable between at least two different reference voltages (Urefo, Urefu). The measuring device further comprises one voltage-sensing device that acquires the voltage (Uo, Uu) between at least one of the load-current lines and the ground point. Connected to the voltage-sensing device is an evaluation unit, which determines the insulation resistance (Riso) on the basis of a first voltage value, which represents a value of the voltage between a first of the load-current lines and the ground point while a first reference voltage (Urefo) of the reference voltage source is applied, and on the basis of a second voltage value, which represents the value of the voltage between the first load-current line and the ground point while a second reference voltage (Urefu) of the reference voltage source is applied.
Owner:BALLARD POWER SYSTEMS

Brake lining wear sensor

An apparatus is provided for measuring wear-induced displacement of a brake lining with respect to an associated brake caliper, comprising a gear mechanism for converting the wear-induced displacement into a rotary movement, having a sensor for detecting the rotary movement, wherein a contact-free coupling is provided for transmitting the rotary movement to the sensor. The apparatus is designed in such a way that the sensor generates an analogue or pulse-width-modulated detection signal for determining the wear-induced displacement of the brake lining, wherein the detection signal corresponds to the respective displacement caused by the rotary movement. The invention also related to a corresponding method for measuring the wear-induced displacement of a brake lining with respect to an associated brake caliper.
Owner:PREH GMBH

Granulation production line for composite material machining

The invention discloses a granulation production line for composite material machining. The granulation production line for composite material machining comprises a mixing module for mixing materials, a kneader module for kneading the mixed materials, and a granulator module for granulating the kneaded materials; a mixing discharge port of the mixing module is connected to a kneader feed port of the kneader module through a pumping pipeline; a feeding pump is mounted on the pumping pipeline; a kneader discharge port of the kneader module is connected to a granulator feed port of the granulator module through a blanking pipeline; the mixing module includes a first feed port and a second feed port; a first weighing machine and a second weighing machine are respectively arranged on the first feed port and the second feed port; a first batching tank and a second batching tank are respectively connected to the first feed port and the second feed port through feeding pipelines; and a feed port weighing machine is arranged on the kneader feed port of the kneader module.
Owner:广东银圭新材料科技有限公司

Method for determining the profile depth of a tire and/or a tire characteristic, and a tire

A method used for determining a profile depth or wear on a tread of a tire of a vehicle, and / or a tire characteristic, a magnetic field being detected by a magnetic field sensor disposed in the interior of the tire, particularly in the area of the tread on the tire interior, or at a distance from the tire, particularly in the area of a wheel housing or a wheel well of the vehicle, the magnetic field being transmitted or changed by at least one indicator element disposed in the tread on the tire exterior. The current wear state of the tread and / or the tire characteristic, particularly a tire type and / or permissible top speed, is determined based on output signals of the magnetic field sensor. The invention further relates to tires.
Owner:CONTINENTAL TEVES AG & CO OHG

Angular position sensor for a downhole tool

Aspects of this invention include a downhole tool having an angular position sensor disposed to measure the relative angular position between first and second members disposed to rotate about a common axis. A plurality of magnetic field sensors are deployed about the second member and disposed to measure magnetic flux emanating from first and second magnets deployed on the first member. A controller is programmed to determine the relative angular position based on magnetic measurements made by the magnetic field sensors. In a one exemplary embodiment, a downhole steering tool includes first and second magnets circumferentially spaced on the shaft and a plurality of magnetic field sensors deployed about the housing.
Owner:SCHLUMBERGER TECH CORP

System and method for inspecting the interior surface of a pipeline

An inspection system for inspecting an interior surface of a pipeline has a frame adapted to travel in the pipeline and an imaging means for imaging a selected portion of the interior surface of the pipeline. The imaging means has a field of view and is mounted in a rotatable manner on the frame. The inspection system has with a two-dimensional pattern generator for generating a two-dimensional pattern projection. The generator is mounted with the imaging means to project the two-dimensional pattern projection in the field of view thereof. The imaging means provide images of the selected portion of the internal surface comprising the two-dimensional pattern projection for monitoring a perpendicularity of the optical axis of the imaging means with respect to the selected portion of the interior surface of the pipeline thanks to a shape of the two-dimensional pattern projection prior to inspection of the internal surface.
Owner:9022 5582 QUEBEC INC C TEC

Integrating sphere type light-catalyzed reaction measuring system

The invention discloses an integrating sphere type light-catalyzed reaction measuring system which is originally designed aiming at the problem that the most basic evaluation parameters respectively represent apparent quantum yield in the light-catalyzed reaction process and can theoretically research and solve the actual efficiency evaluation in the light-catalyzed process. According to functions, the system mainly comprises a light system part and a hydrogen system part which are organically coupled, wherein in the light system part, a light inputting and measuring system comprises a light source, a light path, a monochromator and an integrating sphere and a spectrometer; in the hydrogen system part, a light-catalyzed reaction and measuring system comprises a reaction vessel, a liquid storage vessel, a peristaltic pump, a gas differential detector and the like. The system realizes the synchronous measurement of reactive light absorbing property and the performance for producing hydrogen by light catalysis and can deeply research the light-catalyzed reaction process.
Owner:XI AN JIAOTONG UNIV

Low-temperature curing silver/silver chloride slurry for flexible bioelectrode and preparation method thereof

The invention discloses a low-temperature curing silver / silver chloride slurry for a flexible bioelectrode and a preparation method thereof. The silver / silver chloride slurry comprises, by weight, 38-70wt% of silver / silver chloride powder and 30-62wt% of an organic carrier, wherein the silver / silver chloride powder is composed of 40-90wt% of silver powder and 10-60wt% of silver chloride powder. The prepared flexible bioelectrode is low in square resistance, good in adhesion, good in electrode potential stability, high in anti-interference capability and good in biocompatibility, specific shapes can be formed for different use environments, the cost is low, and mass production is easy. The obtained flexible bioelectrode can highly fit the human tissue, especially the skin, can meet the wearing requirements of different parts of the human body, can measure more accurate and reliable bioelectrical signal data, and can be applied to the fields of biosensor electrodes, ECG electrodes, electrochemical reference electrodes, blood glucose test reference electrodes, environment test electrodes and the like.
Owner:KUNMING INST OF PRECIOUS METALS

Test device and method for simulating field electric energy measurement

The present invention provides a test device and method for simulating field electric energy measurement.The device for simulating field electric energy measurement is a novel simulating device designed according to the state electric energy meter field standard and DL / T448-2000, includes a real load portion and a virtual load portion in principle.The real load portion is composed of current voltage transformer, second wiring thereof, and electric energy meter, is a single bus double loop, can simulate various real wirings in the field, thus ensuring the accuracy and reliability of the electric energy measurement, and avoiding bringing hidden trouble to the safe operation of the power system.The virtual load is composed of three-phase program control test power supply and voltage, and current wiring switch box, has the characteristics of stability, strong function, easy use and the like, can be used by power supply department, metering department, school and training center for explaining practical phenomena such as false wiring of three-phase three-wire, three-phase four-wire active and reactive electric power meters to students, making the teaching closer to the practical work.
Owner:HEILONGJIANG ELECTRIC POWER RES INST +2

Hard x-ray photoelectron spectroscopy arrangement and system

The present invention relates to a hard X-ray photoelectron spectroscopy (HAXPES) system comprising an X-ray source providing a beam of photons which is directed through the system so as to excite electrons from an illuminated sample. An X-ray tube is connected to a monochromator vacuum chamber in which a crystal is configured to monochromatize and focus the beam onto an illuminated sample. A hemispherical electron energy analyser is mounted onto the analysis chamber. An air gap is provided between the X-ray tube and the monochromator chamber, which air gap is provided with a first radiation trap to shield the ambient air from the radiation when the air gap is illuminated with X-rays from the source.
Owner:SCIENTA OMICRON AB

Apparatus and method for measuring the insulation resistance of a fuel cell system

A measuring device to measure the insulation resistance (Riso) of a fuel cell system with respect to an electrical ground point comprises a resistor arrangement—formed by a series connection of reference resistors—between two load-current lines of the fuel cell system as well as one reference voltage source, which is arranged between the ground point and a node between the reference resistors and which is switchable between at least two different reference voltages (Urefo, Urefu). The measuring device further comprises one voltage-sensing device that acquires the voltage (Uo, Uu) between at least one of the load-current lines and the ground point. Connected to the voltage-sensing device is an evaluation unit, which determines the insulation resistance (Riso) on the basis of a first voltage value, which represents a value of the voltage between a first of the load-current lines and the ground point while a first reference voltage (Urefo) of the reference voltage source is applied, and on the basis of a second voltage value, which represents the value of the voltage between the first load-current line and the ground point while a second reference voltage (Urefu) of the reference voltage source is applied.
Owner:BALLARD POWER SYSTEMS

Dual-stress concentration structure micro pressure sensor core body and manufacturing method thereof

The invention provides a dual-stress concentration structure micro pressure sensor core body and a manufacturing method thereof. The core body includes a substrate and a diaphragm arranged at the middle of the substrate, wherein an upper surface of the diaphragm is circumferentially uniformly provided with more than two discontinuous grooves, a ribbed plate is formed between end portions of the adjacent grooves, the ribbed plate is symmetrically arranged on the upper surface of the diaphragm, a stress concentration portion of the ribbed plate is provided with a pressure-sensitive resistor bar,the pressure-sensitive resistor bar is connected through a metal leading wire to form a Wheatstone bridge, a lower surface of the diaphragm is formed with a convex rigid structure, the center of therigid structure passes through the center portion of a back surface of the core body to reduce displacement of the diaphragm center, an outer end surface of the rigid structure is superposed with inner rims of the grooves and is not connected with the substrate, so dual-stress concentration is formed at the position of the pressure-sensitive resistor bar when the pressing force acts on the diaphragm, and thereby reliable and accurate measurement of a micro pressure sensor is guaranteed.
Owner:SUZHOU CHANGFENG AVIATION ELECTRONICS

Intelligent vehicle oil amount measurement detection system

The invention discloses an intelligent vehicle oil amount measurement detection system which aims at providing the intelligent vehicle oil amount measurement detection system which is suitable for vehicle-mounted measurement of a diesel motor and has simple structure and accurate and reliable measurement. An output shaft of a driving motor of a measurement pump is connected with the measurement pump; an oil inlet of the measurement pump is connected with a control valve; an oil outlet of the measurement pump is connected with the oil inlet of a diesel drop tank; the oil outlet of the diesel drop tank is connected with the oil inlet of a low-pressure pump of the diesel motor; an output end of the driving motor of the measurement pump is provided with a revolution sensor; a liquid level sensor is arranged in the diesel drop tank; and the liquid level sensor and the revolution sensor are respectively connected with a central processing unit. The measurement detection system solves the problem of vehicle oil consumption measurement taking diesel oil as energy, provides a guarantee for the convenience of measurement, management of power generating machines and energy conservation, and has simple structure, accurate and reliable measurement, low cost and convenient installation.
Owner:TIANJIN PORT (GROUP) COMPANY +1

Electronic scale

The invention discloses an electronic scale, which comprises a rotary holder, a right leg, a left leg, a middle leg, a main circuit board, a scale display and a power supply part, supporting feet are respectively mounted on the right leg, the left leg and the middle leg, a first sensor is mounted on the right leg, a second sensor is mounted on the left leg, a third sensor is mounted on the middle leg, the first sensor, the second sensor and the third sensor are in signal connection with the main circuit board through sensor wires, and the main circuit board is connected with the circuit of the scale display. The electronic scale is characterized in that: the right leg, the left leg and the middle leg are connected with the rotary holder, wherein the right leg, the left leg and the middle leg are mutually rotated to form a folding state by means of the rotary holder. The electronic scale is thin in thickness, the measurement is accurate and reliable, the electronic scale is convenient to carry, and moreover, the electronic scale also has an angle-limiting function and an in-place indication function, and therefore is more convenient to use.
Owner:ZHONGSHAN TRANSTEK ELECTRONICS

Pontoon metering system of wharf materials

InactiveCN101592515ADeterring attempts to adulterateEasy to measure and manageWeighing apparatus with automatic feed/dischargeSpecial purpose weighing apparatusElectricityControl circuit
The invention relates to a pontoon metering system of wharf materials. A weighing sensor is arranged at the top end of a supporting upright post and is electrically connected with a weighing meter, hoppers are loaded on the weighing sensor and are hung in the air, a material-delivering shuttle plate is applied to delivering materials released by the hoppers to a material conveying belt, a control circuit is simultaneously connected with the weighing meter and a discharge bin gate, and the control circuit controls the open and the close of the discharge bin gate and performs accumulation on the weighing result. The number of the hoppers is four, the four hoppers are arranged on two sides of the material conveying belt respectively, each side is provided with two hoppers, the four hoppers are arranged in a shape as a cross in a square box, and the two hoppers on each side of the material conveying belt share one grab bucket. The pontoon metering system has the advantages of high automation degree, quick blanking and fewer human factors, can effectively restrain the attempt of doping and cheating of a supplier or a ship party, is convenient for the metering management of shipping materials, reduces the management cost, has accurate and reliable metering, and can achieve weight checking and recording, thus metering disputes caused by control rule metering can be reduced.
Owner:CHONGQING IRON & STEEL (GRP) CO LTD

System and method for inspecting the interior surface of a pipeline

An inspection system for inspecting an interior surface of a pipeline has a frame adapted to travel in the pipeline and an imaging means for imaging a selected portion of the interior surface of the pipeline. The imaging means has a field of view and is mounted in a rotatable manner on the frame. The inspection system has with a two-dimensional pattern generator for generating a two-dimensional pattern projection. The generator is mounted with the imaging means to project the two-dimensional pattern projection in the field of view thereof. The imaging means provide images of the selected portion of the internal surface comprising the two-dimensional pattern projection for monitoring a perpendicularity of the optical axis of the imaging means with respect to the selected portion of the interior surface of the pipeline thanks to a shape of the two-dimensional pattern projection prior to inspection of the internal surface.
Owner:9022 5582 QUEBEC INC C TEC

Weighing controlling device and method of electronic belt scale

The invention relates to a weighing controlling device and a method of an electronic belt scale. The weighing controlling device comprises four weighing sensors, a suspended weighing loader, a displacement sensor and an accumulator, wherein the outputs of the weighing sensors enter the accumulator respectively; and the accumulator calculates the combination of three kinds of different programs of the outputs of the four weighing sensors and carries out real-time on-line comparison on two groups of accumulation values. If the difference of the two groups of accumulation values is overlarge, the outputs of the weighing sensors in each group are compared to judge whether certain weighing sensor has a fault, the accumulator shows the accumulation value of the group of weighing sensors with normal outputs so as to ensure that even certain weighing sensor has the fault, the electronic belt scale can still reliably weigh. The device and the method improve the reliability and measurement accuracy of the belt scale, are suitable for on-line, accurate and reliable weighing measurement of a belt type conveyor to continuously convey materials. The device has the advantages of compact and reasonable structure, high reliability, precise measurement, easy maintenance, long service life and wide practicability.
Owner:SAIMO ELECTRIC

Quantum voltage-based digital electric energy metering instrument detection method and system

InactiveCN109239643AAccurate and reliable measurementSolve problems with long, high uncertainty componentsElectrical measurementsPhysicsVIT signals
The invention discloses a quantum voltage-based digital electric energy metering instrument detection method and system. The method comprises the following steps that analog voltage and current signals and alternating-current quantum voltage signals are generated; the analog voltage and current signals and the alternating-current quantum voltage signals are subjected to AD sampling separately to obtain difference values between the analog voltage and current signals and the corresponding alternating-current quantum voltage signals; standard analog alternating-current power is obtained throughcalculation; the analog voltage and current signals are packaged into digital quantity signals for detecting the digital electric energy metering instrument to be input into a to-be-detected digital electric energy metering instrument; the digital quantity signals are used for realizing the detection of the electric energy metering accuracy of the digital electric energy metering instrument, so that the problem that when an existing analog electric energy power reference is adopted for carrying out quantity value transmission on the digital electric energy metering instrument, the electric energy quantity value transmission link is long and uncertainty components are numerous, and consequently, the detection requirements of the digital electric energy metering instrument with high accuracycannot be satisfied is solved.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +4

Liquid drop measuring method and device

The present invention relates to one kind of liquid drop measuring method and device. The measurement method includes adopting two vertically superposed position sensors and one capacitive sensor to measure the time for the liquid drop to pass through, adopting a frequency counter to count frequency and adopting microprocessor to calculate the liquid drop volume. The device includes two photoelectronic sensors, one capacitive sensor, one capacitance / frequency converter, one frequency pulse counter and one microprocessor. The present invention can measure the volume of each falling liquid drop directly with high precision and fast dynamic speed.
Owner:SHANGHAI UNIV

In-service intelligent electric energy meter batch fault early warning method and system

The invention discloses an in-service intelligent electric energy meter batch fault early warning method and system. The method comprises the steps of 1, dividing all in-service intelligent electric energy meters into running batches according to batch dividing rules in batches; 2, processing verification inspection data and running data of the intelligent electric energy meters; 3, calculating the historical fault rate and the on-site inspection failure rate according to a statistical period, taking the historical fault rate and the on-site inspection failure rate as batch fault early warningresearch and judgment trigger conditions, if a set threshold is reached or exceeded, entering the step 4, and if the set threshold is not reached, returning to the step 2; 4, outputting a batch faultjudgment result; 5, judging whether the running batches meet a batch fault judgment condition or not, if yes, entering the step 6, and if not, returning to the step 2; and 6, generating an intelligent electric energy meter running batch fault disposal scheme. The method has the advantages that the workload of verification personnel is reduced; the resource waste is avoided, and the investment isreduced; and on the premise that the metering accuracy and reliability of the intelligent electric energy meters are ensured, the resources are ensured to be saved and efficiently utilized.
Owner:NANJING NARI GROUP CORP +2

Circular cutting saw stress end jumping detecting correcting machine

A circular cutting saw stress end jumping detecting correcting machine which comprises a machine frame. A hydraulic station and an air pressure control cabinet are arranged on the machine frame. A main control computer is also arranged on the machine frame. One end of the machine frame is provided with a grinding device, and the other end of the machine frame is provided with a tension measuring and end jumping measuring device. According to the circular cutting saw stress end jumping detecting correcting machine, the functions of circular saw blade tension measuring, tension grinding correcting and end jumping measuring are integrated, the measuring functions and the correcting function can be achieved at the same time, machining efficiency is improved, a tension pressurization mode is used, pressurization is smooth, and measuring accuracy is improved.
Owner:YICHANG DISEN MACHINERY

Foot Measurement, Alignment and Evaluation Device

A foot measuring or sizing device comprising a base platform, a heel support (28), an alignment fin (6) and a measurement scale (16). The heel support is pivotally connected to the base platform and the foot fin being slidably along an elongate slot formed in the base platform to facilitate alignment of the foot to be measured with a central axis or plane of the foot measuring or sizing device prior to determining a length, measuring a width and / or determining the amount of lift or adjustment of the foot to be measured is necessary to properly support a foot while using footwear.
Owner:ALINE SYST INC
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