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67results about How to "Realize real-time online measurement" patented technology
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High-temperature high-pressure multifunctional core sulfur deposition test device and method
InactiveCN102053055ARealize real-time online measurementRealize visual displayClosed circuit television systemsPermeability/surface area analysisData processing systemData acquisition
The invention discloses high-temperature high-pressure multifunctional core sulfur deposition test device and method. The sulfur deposition test device comprises a displacement system, a formation condition analog system, a data acquisition system and a data processing system. The sulfur deposition test method comprises the following steps of: constructing a test environment, measuring the sulfur element deposition on line, observing the sulfur element deposition process on line, and testing the change of permeability of a rock sample before and after sulfur deposition and the like. The invention has the beneficial effects of realizing the visual display of a true core sulfur deposition process, the real-time online measurement of the sulfur deposition and dynamic calculation of core permeability change caused by sulfur deposition and accurately and dynamically evaluating the damage severity of permeability of a reservoir stratum, caused by sulfur deposition in real time, and has the advantages of high degree of automation, good safety, high accuracy, high temperature and high pressure resistance, strong corrosion resistance and the like.
Owner:SOUTHWEST PETROLEUM UNIV
Quick digital image correlation measurement method based on stochastic parallel gradient descent optimization technology
InactiveCN102221341AQuick measurementRealize real-time online measurementUsing optical meansCorrelation coefficientDifferential coefficient
The invention provides a quick digital image correlation measurement method based on stochastic parallel gradient descent optimization technology, comprising the following steps of comprehensively considering related parameters such as displacement, differential coefficient and the like of any one point in a speckle field of an object to be measured; and utilizing the stochastic parallel optimization technology to realize quick digital image correlation measurement. In the method, by adopting stochastic parallel disturbance on a deformation parameter, the correlation coefficient is convergentto a global unique extremum, thus obtaining the deformation parameter. The method has a simple principle, can be realized easily, is a DIC (digital image correlation) measurement method with totally new concept, can realize the aim of quickly measuring DIC with high precision and high reliability, and is expected to realize the real-time online measurement on the DIC.
Owner:NAT UNIV OF DEFENSE TECH
Horizontal guiding drill pipeline locus autonomous surveying and drawing location system and surveying and drawing location method thereof
InactiveCN101676517ARealize real-time online measurementAccurate plottingSurveyData synchronizationFiber
The invention relates to a horizontal guiding drill pipeline locus autonomous surveying and drawing location system which comprises an underground while-drilling attitude measurement system and a ground data processing system that are connected with each other by a communication cable; wherein the underground while-drilling attitude measurement system comprises a three-axis fiber optic gyro, a three-axis accelerometer, a magnetometer, an inclinometer, a data synchronization acquisition subsystem which is connected with the three-axis fiber optic gyro, the three-axis accelerometer, the magnetometer and the inclinometer by circuits, a data communication subsystem connected with the data synchronization acquisition subsystem by the circuit, and a power supply administration module respectively connected with the data synchronization acquisition subsystem and the data communication subsystem by the circuit. The system adopts inertia measurement technology, can realize accurate constructionattitude measurement for a horizontal guiding drill by arranging the horizontal guiding drill pipeline locus autonomous surveying and drawing location system between a drill rod on the horizontal guiding drill and a back-drawing device (or a guide plate) and utilizing a corresponding surveying and drawing location method, and accurately plot the exact route map of the actual construction locus.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
Real-time yield monitoring system of spicate corn
InactiveCN101663938ARealize real-time online measurementHigh precisionHarvestersMeasurement deviceMonitoring system
The invention relates to a real-time yield monitoring system of spicate corn, which belongs to technical field of measurement devices. The system comprises a main controller taking a field computer asa core, a speed acquisition system, a spicate corn guiding device, a yield sensor, a cutting platform height sensor, a storage card, a power supply and a GPS receiver, wherein the main controller andthe storage card are integrallty fixed in a harvester cab, the speed acquisition system is installed on harvester wheels, the guiding device is installed at the top end of an elevator of a harvester,the impulse type yield sensor is installed at the lower part of the guiding device; the cutting platform height sensor is installed on a corn cutting platform, the GPS receiver is fixed at the top ofthe harvester, and the speed acquisition system, the sensors and all parts of the GPS receiver are all connected with the main controller by shielding leads. The invention converts the water contentof niblets and the niblet-fringe ratio mold of a harvested field to obtain granular corn yield, thereby providing data support for achieving accurate strategy and implementation of agriculture operation.
Owner:JILIN UNIV
Method for measuring viscosity of dynamic fluid by using bending vibration
The invention relates to a method for measuring viscosity, in particular to a method for measuring the viscosity of dynamic fluid by using a vibration pipe, a controller, a flow rate detecting device and a calculating device, wherein the vibration pipe is communicated with a fluid flow pipeline, the controller is used for controlling the vibration of the vibration pipe, and the flow rate detecting device and the calculating device are respectively arranged on two ends of the vibration pipe. Because a Coriolis mass flowmeter can be used for directly measuring the mass flow rate of the fluid, the dynamic viscosity measurement result with the flow rate compensated can be calculated conveniently, and further the viscosity of the fluid can be measured on line in real time. Because the Coriolismass flowmeter can be used for measuring the density of the fluid in the pipe, the real-time kinematic viscosity of the fluid in the pipe can be obtained.
Owner:XIAN DONGFENG MACHINERY & ELECTRONICS
A kind of soft measurement method of mud layer height in red mud settlement process
InactiveCN102289718ARealize real-time online measurementRealize the mappingMeasurement devicesNeural learning methodsRed mudMineralogy
A soft measurement method for the height of the mud layer in the red mud settlement process belongs to the field of automatic measurement technology, comprising the following steps: establishing a mapping with the mud layer height (L) of the settlement tank by collecting the data of the red mud settlement process under different working conditions; Standardize the collected red mud settlement process data and eliminate abnormal data; standardize the data and use function transformation to map its value to the value interval of [0.1, 0.9]; substitute the data processed in step 3 into the neural network, The weight coefficients are determined through the training of the neural network; the data of the red mud settlement process is collected in real time, and the collected data is processed by steps 2-3, and brought into the trained neural network in step 4 to realize the settlement of the red mud The measurement of the height of the mud layer in the process; the real-time online measurement of the height of the mud layer is realized, which overcomes the shortcomings of the current method, which is large in maintenance, expensive, and not widely used.
Owner:NORTHEASTERN UNIV ENG & RES INST CO LTD
Bearing lubricating film thickness ultrasonic measurement method and system
ActiveCN112595271AExpand the measurement rangeRealize real-time online measurementUsing subsonic/sonic/ultrasonic vibration meansLinear relationshipSingle probe
The invention discloses a bearing lubricating film thickness ultrasonic measurement method and system, belongs to the field of lubricating oil film thickness measurement and lubricating state monitoring, and solves the problem that the real-time continuous change of the thickness of the bearing lubricating film cannot be effectively monitored by using a single probe through a flight time method, aspring model method, a resonance model method and the like. According to the method, the oil film thickness is solved and obtained by establishing the quantitative relation between the lag phase angle and the reflection coefficient obtained through measurement and utilizing the linear relation between the lag phase angle and the oil film thickness. According to the method, a reflection coefficient obtained through measurement is converted into a lag phase angle, compared with a spring model, the oil film thickness measuring range of the single probe is improved to a large extent, continuous and accurate measurement of the oil film thickness from 0 micron to tens of microns can still be achieved under a high-frequency probe, and film thickness measurement in a wider range can be achieved in combination with a resonance model. The method can be applied to lubricating oil film thickness measurement.
Owner:HARBIN INST OF TECH
Open channel section water flow online measuring device and measurement and control method
ActiveCN113358163ARealize real-time online measurementComprehensive measurement dataNuclear energy generationMeasuring open water depthMeasurement deviceTurbid water
The invention discloses an open channel section water flow online measuring device and a measurement and control method. The device comprises a measuring supporting frame, a measuring rod assembly is fixedly installed on the measuring supporting frame, a side rod assembly communicates with a signal processing control host 11, the measuring rod assembly comprises a measuring rod 8 and a measuring rod driving mechanism, and a set of sensors are arranged on the side rod 8. The measuring rod driving mechanism comprises a measuring rod lifting motor 10, an output shaft of the measuring rod lifting motor 10 is fixedly connected with a coded disc 4 and a shaft angle encoder 5, and the coded disc 4 is fixedly connected with the measuring rod 8. The technical problem to be solved by the invention is to provide the open channel section water flow online measurement device and the measurement and control method so as to solve the problems that the existing open channel flow measurement equipment realizes multi-vertical-line multi-measurement-point water flow real-time online measurement according to relevant national standards, and the measurement is inaccurate under the conditions of turbid water body, silted channel, sundries in the water body and the like. The problem of real-time online flow measurement of the open channel can be effectively solved.
Owner:JINAN HEYI HUISHENG TECH DEV CO LTD
Laser induced breakdown spectroscopy-based online solid sampling measurement system and method
InactiveCN104483293ARealize real-time online measurementFlat surfaceAnalysis by material excitationPhysical chemistryLaser-induced breakdown spectroscopy
The invention discloses a laser induced breakdown spectroscopy-based online solid sampling measurement system and method, and belongs to the technical field of atomic emission spectroscopy. According to the system, the four processes such as crushing, compression moulding, detection and withdrawing of a solid sample are connected by a transmission unit and the automatic continuous online measurement of the solid sample is realized by a control unit; the spectral signals collected by a laser induced breakdown spectroscopy detection unit are analyzed through a laser induced breakdown quantitative spectrometric analysis model integrated in a data analysis module, so as to obtain a real-time solid sample characteristic detection result. The system and the method are capable of realizing the laser induced breakdown spectroscopy online analysis of the solid sample and beneficial for pushing the laser induced breakdown spectroscopy technology to develop from laboratory analysis to industrial application.
Owner:TSINGHUA UNIV
Measuring method of on line key paramotor based on new type generalized predictive control
InactiveCN1758026AAvoid calculationDescending square orderSpecial purpose recording/indication apparatusIndustrial furnaceHeating furnace
An in-line key parameters measuring method based on generalized prediction control for the process control of boiler or different industrial furnaces features that an in-line measuring model is disclosed.
Owner:YANSHAN UNIV
Online measuring alarming method based on intelligent substation switch latency
ActiveCN103001820AReal-time online measurementAvoid operational accidentsData switching networksMessage passingSmart substation
The invention discloses a method for measuring switch latency of an intelligent substation by utilizing a network message analyzer to analyze message passing a switch. Online measuring of switch latency is achieved, and alarming can be sent when latency border crossing occurs. In addition, the original topological structure of the switch communication network is unaffected.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
Real-time online continuous methanol detecting device and method
Owner:四川君汇科技有限公司
Flotation concentrate grade detection method based on multi-parameter feature fusion
PendingCN114383985ARealize real-time online measurementRealize online measurementImage enhancementMaterial analysis using sonic/ultrasonic/infrasonic wavesPhysicsImage based
The invention relates to a flotation concentrate grade detection method based on multi-parameter feature fusion. The method comprises the following steps: (1) collecting flotation mineral particles and flotation froth images; (2) detecting the particle size distribution condition of the collected mineral particle image based on an image processing technology; (3) extracting image features of flotation froth, and establishing a sample database; (4) measuring ore pulp concentration and density indexes on line; (5) establishing a multivariable concentrate grade prediction model by using the mathematical relationship among the ore pulp concentration, the density and the concentrate grade; (6) respectively establishing different concentrate grade prediction models based on five different neural networks; and (7) performing multivariable joint optimization by using parameters of the concentrate grade prediction model established by using a particle swarm algorithm, and taking an average value of accumulated sums of output results of the six models as an output value Y of the final flotation concentrate grade prediction model, namely a detection value of the concentrate grade. The method has the advantages that the flotation concentrate grade detection accuracy and precision are higher according to the prediction model.
Owner:ANSTEEL GRP MINING CO LTD
Method for monitoring etching process using optical emission spectrum characteristics
ActiveCN101436530ARealize real-time online measurementSemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingSpectroscopyLinearity
The invention provides a method for monitoring an etching process by using optical emission spectroscopy characteristics, which comprises the following steps: firstly, using an optical emission spectroscopy acquiring device to acquire spectroscopy signals in real time and on line; secondly, screening spectroscopy of certain specific elements (such as CF<2>) or certain section of the spectroscopy from the spectroscopy signals, and finally determining thickness of a polymer deposited on the inner wall of a current etching chamber according to linear relation between the strength of the screened spectroscopy signals and the polymer deposited on the inner wall of the etching chamber. Therefore, the method can achieve real-time effective monitoring for an etching process.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP
Detection system and method of coating membrane thickness
InactiveCN105115432AMonitor stabilityThe method of measurement is accurateUsing optical meansOriginal dataMembrane surface
Disclosed in the invention is a detection system of a coating membrane thickness. The system comprises a probe, a feedback circuit, a photoelectric detector, and a computer. The probe is used for scanning a PR membrane surface; the feedback circuit is used for controlling a scanning head to move at a vertical direction, so that the acting force between the probe and the PR membrane surface at each point is constant all the time during the scanning process; the photoelectric detector is used for converting a reflected laser beam into an electric pulse signal; and the computer is used for converting the electric pulse signal into an area that is either bright or dark to form original data of the PR membrane thickness. According to the invention, the measurement time is shorter; arrangement of a complex optical system is not required; the measurement and coating processes are carried out synchronously; real-time on-line measurement of the coating membrane thickness is realized; the coating membrane thickness can be controlled and adjusted in real time; and the system and method play a key role in realizing stability of the coating process monitoring.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Real-time multitask scheduling method based on DSP (Digital Signal Processor) fly ash carbon content measurement
ActiveCN108982308ARealize real-time online measurementProgram initiation/switchingResource allocationNon real timeFly ash
The invention discloses a real-time multitask scheduling method based on DSP (Digital Signal Processor) fly ash carbon content measurement. The fly ash carbon content is measured on line based on a DSP by adopting a BP neural network algorithm, a non-real time task (BP neural network parameter training) and a real time task (online fly ash carbon content prediction) are simultaneously performed bya Protothread multithreading model, the 'real-time property' and 'concurrency' of multitask scheduling can be ensured, and the problems that the storage capacity in the DSP is limited and the measuring real-time property is poor because the BP neural network algorithm is complicated and the training data quantity is high are effectively solved, so that the real-time online measurement of the flyash carbon content is realized.
Owner:西安帝和电子科技有限公司
Device and method for testing fiber bragg grating corrosion and liquid refractive index
ActiveCN104864918ARealize real-time online measurementWith protective functionMeasurement devicesFiberHydrofluoric acid
A device for testing fiber bragg grating corrosion and liquid refractive index comprises a working container, an adjustable constant-temperature water domain controller, a fiber bragg grating wavelength detector, a temperature detector and a support frame. The method, further provided by the invention, for testing the fiber bragg grating corrosion and liquid refractive index comprises the following steps: 1) passing a fiber bragg grating through the working container to be connected with the fiber bragg grating wavelength detector; 2) vertically fixing the working container on the support frame, connecting a fiber bragg grating tail fiber with the fiber bragg grating wavelength detector, connecting the temperature detector with the adjustable constant-temperature water domain controller, and connecting the working container with the adjustable constant-temperature water domain controller; 3) injecting a carbon tetrachloride solution in the working container till the liquid surface reaches the lower limit position of a corrosion area; injecting hydrofluoric acid till the liquid surface reaches the upper limit position of a to-be-corroded area; finally injecting liquid paraffin; 4) using the fiber bragg grating wavelength detector to monitor the change of reflection wavelength of the fiber bragg grating, performing acid-base neutralization after corroding, and cleaning; 5) filling an inner pipe with a to-be-detected liquid, recording the drift distance of the fiber bragg grating wavelength, and calculating the liquid refractive index according to a scaling relation; the device is simple in structure, and accurate in measurement.
Owner:西安长泽石化科技有限公司
Full-automatic halogen gas measurement device
ActiveCN106556707ARealize real-time online measurementAutomatically identify and judge stabilityMaterial analysisData displayHalogen
The invention relates to a full-automatic halogen gas measurement device. The device comprises a gas path part and a gas path control part. The gas path part comprises a gas acquisition component, a gas intake time control component and a gas measurement component. The gas acquisition component is used for acquiring a measured gas and air, and conveys the two gases to the gas intake time control component through respective pipelines; the gas intake time control component mixes the two gases through an output pipeline and then conveys the mixed gas to the gas measurement component; the gas measurement component measures the concentration of the mixed gas concentration; the gas path control part includes a control and data processing module and a data display module, the control and data processing module is used for controlling the on-off time of the two gases in the gas intake time control component, receiving an electrical signal fed back by the gas measurement component, performs computing processing on the electrical signal and conveys the processed electrical signal to the data display module. The measurement device provided by the invention realizes real-time on-line measurement of halogen gas from 1ppb to 50ppm, the measurement range is wide and the sensitivity is high.
Owner:CHINA INST FOR RADIATION PROTECTION
Wireless measuring device and method for concentration of non-spherical particles of three-dimensional dense gas-solid system
InactiveCN104165832AThere is no problem of disturbing the flow fieldImproved shooting modeParticle suspension analysisImaging processingSpherical shaped
The invention discloses a wireless measuring device for the concentration of non-spherical particles of a three-dimensional dense gas-solid system. The wireless measuring device comprises magnetic-control photographing particles, a magnetic-control driving unit, a wireless signal receiving unit, a wireless remote controller and an image processing unit, wherein the magnetic-control photographing particles are coupled with photographing and wireless signal transmitting and receiving functions and are arranged inside the three-dimensional dense gas-solid system; the magnetic-control photographing particles are similar to the non-spherical particles inside the system in shape and size; the magnetic-control photographing particles can move randomly in a gas-solid flow field and also move to a target area under the control of the magnetic-control driving unit; the distributed information of the magnetic-control photographing particles in an ambient bed layer is scanned and photographed by using a camera inside the magnetic-control photographing particles; finally an image signal is transmitted to a wireless signal transmitting and receiving system outside the system in a wireless transmitting mode, and the concentration of the particles is obtained through image processing. By adopting the measuring method and the device disclosed by the invention, the visible particle distribution information inside the bed layer can be obtained in random movement and magnetic-control movement modes, and the wireless measuring method and device have the advantages of no interference on flow fields, real-time on-line measurement and the like.
Owner:SOUTHEAST UNIV
Active mode surface scanning thermo-detector
ActiveCN1621790ARealize real-time online measurementRealize online measurementPyrometry using electric radation detectorsVideo monitoringMeasuring instrument
The present invention is one kind of opto-electromechanical temperature monitoring device, and is one active surface scanning temperature measuring instrument capable of completing the active 2D field temperature field measurement of static target and the performing the video monitoring of the target. The technological scheme includes: setting one light entering opening on the instrument casing for light to enter, setting spectroscope at the opening, setting reflector beside the spectroscope to reflect light to the video camera, setting infrared receiving mirror capable of rotating and oscillating in the inner side of the spectroscope and setting infrared detector to receive infrared and transmit signal the signal processor. The present invention is used in on-line measurement of burning temperature and burning state and is significant in improving work state, raising product quality, saving fuel and reducing harmful gas exhaust.
Owner:HEFEI GOLD STAR MECHATRONICS TECH DEV CO LTD
Electric conduction-type internal wave measurement system
InactiveCN102175425ARealize real-time online measurementGuaranteed reliabilityHydrodynamic testingMaterial impedanceSensor arrayElectrical resistivity and conductivity
The invention relates to an electric conduction-type internal wave measurement system, which is characterized in that: the system comprises a micro conductive sensor array for detecting the change of electric conductivity in a flow field, an output end of the micro conductive sensor array is sequentially connected with a range switcher, an amplifier, an electric conductivity / density converter, an analog / digital converter, a computer and an internal wave waveform real-time display window; the range switcher automatically adjusts the gain of the amplifier according to an electric conductivity signal of the micro conductive sensor array; the electric conductivity / density converter converts the electric conductivity signal of liquid to a density signal which is then further converted, by the analog / digital converter, into a digital signal for being input into the computer, and the digital signal is analyzed and processed by internal wave signal real-time processing software in the computer to obtain integral real-time internal wave waveform, in the end, the internal wave waveform is input to an internal wave waveform real-time display window for being displayed. The system has the advantages of long recording time, high resolution, good synchronism, high reliability and the like, and is suitable for the real-time measurement and analysis of internal waves at different density layers in a variety of density stratification water tanks.
Owner:CHINA NAT OFFSHORE OIL CORP +2
High-temperature high-pressure multifunctional core sulfur deposition test device and method
InactiveCN102053055BRealize real-time online measurementRealize visual displayClosed circuit television systemsPermeability/surface area analysisData processing systemData acquisition
Owner:SOUTHWEST PETROLEUM UNIV
Online soft measurement method for as-fired coal amount based on burner video signals
InactiveCN110686272AGuaranteed uptimeRealize real-time online measurementChamber safety arrangementThermodynamicsImaging processing
The invention discloses an online soft measurement method for the as-fired coal amount based on burner video signals, and belongs to the technical field of burning flame image processing. The method comprises the steps that pulverized coal combustion image features collected by a burner flame image sensor are extracted, an edge trace method is adopted for calculating the area and concentration ofa burning region, on the basis of current operating state signals of a boiler, the as-fired coal amount is obtained through an as-fired coal amount soft measurement model, real-time online measurementof the as-fired coal amount of the boiler is achieved, supports are supplied to refined burning of the boiler, and a foundation is laid for safe, stable and optimized operation of the boiler.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Device and method for measuring ammonia gas based on femtosecond laser-induced plasma
PendingCN111551539ARealize measurementEasy and fast measurementAnalysis by thermal excitationFemto second laserOptical spectrometer
The invention discloses a device and a method for measuring ammonia gas based on femtosecond laser-induced plasma, the device comprises a flow field to be measured, a femtosecond laser, a focusing lens, a spectrograph, an ICCD camera and a computer, and NH3, such as NH3 / N2 mixed gas and NH3 / air combustion flame, is arranged in the flow field to be measured. The spectrograph is arranged on one sideof a flow field to be measured, the spectrograph and the ICCD camera are both connected with a computer, and laser emitted by the femtosecond laser forms a filament through the focusing lens and thenenters the flow field to be measured. The measuring device is simple, the measuring process is simple and convenient, the interference on the flow field to be measured is very small, and the real-time online measurement of NH3 in the closed and open flow fields can be realized.
Owner:TIANJIN UNIV
Secondary air online measuring method for turbulent burner
ActiveCN108386867ARealize real-time online measurementImprove operational safety and stabilityAir supply regulationChamber safety arrangementElectric consumptionWind speed
The invention provides a secondary air online measuring method for a turbulent burner, and the secondary air online measuring method is used for measuring the air speed in a secondary air duct of theturbulent burner. The measuring method comprises the following steps of selecting three measuring radiuses in the secondary air duct, wherein three circumferences taking the central point of the secondary air duct as the center of a circle by the three measuring radiuses, and the three circumferences are successively an inside circumference, a middle circumference and an outside circumference; anddividing the radial cross section of the secondary air duct into four annular regions by the three circumferences, wherein the radiuses of the three circumferences are successively r1, r2 and r3. Themethod provided by the invention can measure the blast capacities of secondary air hoses truly and effectively, provides a good basis for optimizing air distribution, optimizes the air distribution mode, reduces the electric consumption of a fan, reduces the station service power consumption rate, and improves the economical efficiency of a boiler.
Owner:BEIJING YUANSHEN ENERGY SAVING TECH
On-line measuring device and method for gamma radiation optical glass transmittance
InactiveCN109856090AShort irradiation timeIncrease the effective optical pathTransmissivity measurementsMeasurement devicePhotodetector
The invention provides an on-line measuring device and method for gamma radiation optical glass transmittance. The on-line measuring device for gamma radiation optical glass transmittance comprises ashell, a light source emitter, an optical isolator, a mode matching lens, a first high reflection mirror, a first adjustable diaphragm, a Dove prism, a second adjustable diaphragm, a second high reflection mirror, a focusing lens, a photodetector, a driving control module and an acquisition and processing module, wherein the light source emitter is disposed in the shell and is used for emitting adetection light source; the optical isolator, the mode matching lens and the first high reflection mirror are arranged in the shell; the first adjustable diaphragm is arranged on the shell; the Dove prism is made of optical glass to be measured and is arranged in the irradiation area; the second adjustable diaphragm is arranged on the shell; the second high reflection mirror and the focusing lensare arranged in the shell; the photodetector is disposed in the shell and is used for receiving transmitted light passing through the focusing lens; the driving control module is separately connectedwith the light source emitter and the photodetector and is used for providing driving current for the light source emitter and the photodetector and controlling the output wavelength of the light source emitter; and the acquisition and processing module is connected with the photodetector and is used for acquiring and processing transmitted light signals received by the photodetector.
Owner:BEIJING GAS GRP
A pipe diameter measuring device and its measuring method based on machine vision
ActiveCN110595369BRealize real-time online measurementWon't hurtUsing optical meansMachine visionEngineering
The present invention belongs to the field of pipe measurement, and discloses a machine vision-based pipe diameter measuring device and a measuring method thereof. The device comprises a vertical bracket and a chassis that are vertically connected; the bracket is horizontally connected with two upper and lower horizontal bars; the same ends of the two horizontal bars are provided with a camera respectively; the two cameras are arranged directly above the center line of a to-be-tested pipe; the two horizontal bars are adjustably arranged through a clamping device and the vertical bracket respectively; and the vertical distance of the camera from the pipe and the extended length of the camera in the horizontal direction are continuously adjusted by using the clamping device. According to thetechnical scheme of the present invention, a combination of a natural light source and two high-definition cameras are used for non-contact measurement, and the device is simple and low in cost, andcan be used to remove the measurement error caused by the runout of the center of the pipe; and real-time online measurement during the pipe operation can be realized, and even if the pipe has radialrunout during the operation, the diameter can also be accurately measured.
Owner:TAIYUAN UNIV OF TECH
Measurement and verification device and method for underwater bending and twisting deformation of fuel assembly, equipment and medium
ActiveCN113899319ARealize real-time online measurementImprove anti-interference abilityImage enhancementImage analysisPoint cloudControl engineering
The invention provides a measurement and verification device for the underwater bending and twisting deformation of a fuel assembly. The device comprises a connecting part used for realizing integrated installation, a measuring part installed on the connecting part and used for realizing measurement of the fuel assembly, a rotating part which is connected with the connecting part and controls the connecting part to rotate so as to drive the measuring part to rotate, and a lifting part which is connected with the rotating part and controls the rotating part to ascend and descend so as to drive the measuring part to ascend and descend, Meanwhile, the invention also provides a corresponding method. The method comprises the steps of: collecting the three-dimensional reconstruction point cloud data of the fuel assembly through an upper group of measurement units and a lower group of measurement units; screening and fitting the point cloud data to obtain a reconstructed outer side points of the fuel assembly and a fitting plane of the reconstructed outer side points, and performing three-plane intersection on the fitting plane to obtain an intersection result; and based on the intersection result, completing the bending and twisting deformation measurement of the fuel assembly. The device and the method have the advantages of strong anti-interference capability, high stability, high precision and high speed, can realize real-time online measurement of bending and twisting deformation of the fuel assembly, and have certain watertight performance.
Owner:SHANGHAI JIAO TONG UNIV +1
Detector for self correcting type transparent material refractive index
InactiveCN1858578ARealize real-time online measurementEliminate the tedious process of table lookup calculationPhase-affecting property measurementsDisplay deviceDirect observation
This invention relates to a self-aligned transparent material refractive rate test instrument, which has a flat base fixed with a laterally placed test drawtube on it by a locating supporting piece, a working piece locating base is set at the front of its exit light and a camera device is set at the tail t obe connected with a computer by a transmission interface, a shaft position coder is set on the top of the drawtube and a transmission interface connected with the computer is set on the coder to be connected to a minimeter on the drawtube by a stem having an adjusting handwheel and a monochromatic lamp.
Owner:HENAN COSTAR GRP CO LTD
Fully mechanized coal mining face hydraulic support supporting height and top beam inclination angle measuring method
ActiveCN111879244AGuaranteed uptimeImprove running stabilityUsing optical meansIncline measurementComputer graphics (images)Filter algorithm
The embodiment of the invention discloses a fully mechanized coal mining face hydraulic support supporting height and top beam inclination angle measuring method, and relates to the technical field offully mechanized coal mining face equipment monitoring. adopting a depth camera to obtain a point cloud image containing a hydraulic support base; performing noise reduction processing on the point cloud image by adopting a filtering algorithm; segmenting the denoised three-dimensional point cloud by using a point cloud segmentation algorithm to obtain a plurality of types of point cloud data clusters; selecting a point cloud feature descriptor to perform feature description and extraction on point cloud clustering; performing matching in point cloud clustering according to the hydraulic support base three-dimensional model to obtain base point cloud; registering the hydraulic support base point cloud with a preset base database point cloud model to obtain six-degree-of-freedom parametersof the support base relative to the depth camera in an actual scene; and obtaining the supporting height of the hydraulic support and the inclination angle value of the top beam by combining the installation position relation of the depth camera and the top beam. According to the measuring method, real-time on-line measurement of the supporting height of the hydraulic support and the inclinationangle parameters of the top beam can be well achieved.
Owner:CCTEG COAL MINING RES INST +1
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