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35results about How to "Increase calibration range" patented technology
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Spectral imaging system
InactiveUS20050151965A1Wide rangeIncrease calibration rangeRadiation pyrometrySpectrum investigationData acquisitionSpectral dimension
An imaging system and methods for resolving elements of interest through and obscuring environment by removing undesired signals from the intervening, obscuring environment is disclosed. A passive hyperspectral imaging sensor is calibrated and integrated into a system having a positioning and attitude detection system and an instrument control and data acquisition system that records data from sensors in a three-dimensional data cube having two spatial dimensions and a spectral dimension. Either an active detection and ranging system or a look-up-table approach or both are used to remove the noise generated by the intervening, obscuring environment from the data relevant to the elements of interest.
Owner:EATHON INTELLIGENCE
Methods for controlling one or more parameters of a flow cytometer type measurement system
ActiveUS20050073686A1Increase calibration rangeMaterial analysis by optical meansIndividual particle analysisFlow CytofluorometryEngineering
Various methods for controlling one or more parameters of a flow cytometer type measurement system are provided. One embodiment includes monitoring parameter(s) of the measurement system during measurements of sample microspheres. The method also includes altering the parameter(s) in real time based on the monitoring. Another method includes monitoring a temperature proximate to the measurement system. One such method includes altering a bias voltage of an avalanche photo diode in response to the temperature using empirically derived data. A different such method includes altering output signals of a photomultiplier tube in response to the temperature using a characteristic curve. Some methods include monitoring a temperature of a fluid, in which sample microspheres are disposed, that will flow through the flow cytometer type measurement system. This method also includes determining a velocity of the sample microspheres in the measurement system from a viscosity of the fluid at the temperature.
Owner:LUMINEX
Spectral imaging system
InactiveUS7369229B2Increase calibration rangeAccurate detectionRadiation pyrometrySpectrum investigationFull spectral imagingData acquisition
An imaging system and methods for resolving elements of interest through and obscuring environment by removing undesired signals from the intervening, obscuring environment is disclosed. A passive hyperspectral imaging sensor is calibrated and integrated into a system having a positioning and attitude detection system and an instrument control and data acquisition system that records data from sensors in a three-dimensional data cube having two spatial dimensions and a spectral dimension. Either an active detection and ranging system or a look-up-table approach or both are used to remove the noise generated by the intervening, obscuring environment from the data relevant to the elements of interest.
Owner:EATHON INTELLIGENCE
Methods for controlling one or more parameters of a flow cytometer type measurement system
ActiveUS7318336B2Increase calibration rangeVolume/mass flow measurementMaterial analysis by electric/magnetic meansMicrosphereEngineering
Various methods for controlling one or more parameters of a flow cytometer type measurement system are provided. One embodiment includes monitoring parameter(s) of the measurement system during measurements of sample microspheres. The method also includes altering the parameter(s) in real time based on the monitoring. Another method includes monitoring a temperature proximate to the measurement system. One such method includes altering a bias voltage of an avalanche photo diode in response to the temperature using empirically derived data. A different such method includes altering output signals of a photomultiplier tube in response to the temperature using a characteristic curve. Some methods include monitoring a temperature of a fluid, in which sample microspheres are disposed, that will flow through the flow cytometer type measurement system. This method also includes determining a velocity of the sample microspheres in the measurement system from a viscosity of the fluid at the temperature.
Owner:LUMINEX
Method and device for eliminating crossed polarization jamming
ActiveCN102833199AIncrease calibration rangeAvoid disadvantagesTransmitter/receiver shaping networksCommunications systemRelative phase
The invention discloses a method and a device for eliminating the crossed polarization jamming in a wireless communication system. According to the invention, by automatically detecting an error value between a signal subjected to elimination of the crossed polarization and an ideal signal, a phase deviation value of both receiving and transmitting ends of a master polarization direction signal and a relative phase deviation value of the master polarization direction signal and a slave polarization direction signal are adaptively estimated and a coefficient of a filter is updated; the slave polarization direction signal is regulated by utilizing the relative phase deviation value of the master polarization direction signal and the slave polarization direction signal and the coefficient of the filter and the master polarization direction signal is regulated by utilizing the phase deviation value of both the receiving and transmitting ends of the master polarization direction signal and the coefficient of the filter; then aiming at the regulated master polarization direction signal and the regulated slave polarization direction signal, the signal subjected to elimination of the crossed polarization is updated; and the elimination of the crossed polarization is completed until the error value meets the error requirement set by technical indexes.
Owner:安徽省菲特科技股份有限公司 +1
High-power pulse field strength calibration system and high-power pulse field strength calibration method
PendingCN109164405AMeet the needs of measurement assuranceIncrease calibration rangeElectrical measurementsElectric field sensorDark chamber
Embodiments of the application disclose a high-power pulse field strength calibration system and a high-power pulse field strength calibration method. The system comprises: a horn antenna and an integrated optical electric field sensor disposed opposite in a microwave dark chamber, and an analysis module, wherein the horn antenna emits a pulse field with a fixed duty cycle in the microwave dark chamber, the integrated optical electric field sensor induces a pulse field strength to generate an induced voltage, and the analysis module obtains calibration data of the pulse field strength based onparameters of the pulse signal source and the induced voltage. The technical solution described in the application can accurately perform the calibration of high-power pulse field strength, and can meet the measurement guarantee requirements of high-power pulse field strength. The calibration range is up to 3000V / m, which is a significant improvement over the calibration range of the existing conventional methods (up to 1000V / m). The scheme can also calibrate time domain parameters such as pulse field strength repetition frequency, pulse width, and rise / fall time as needed.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
Image correction method and system of infrared focal plane detector
ActiveCN103491318AIncrease calibration rangeHigh precisionTelevision system detailsImage enhancementComputation complexityImaging quality
The invention provides an image correction method and system of an infrared focal plane detector. The method comprises the steps that an infrared focal plane receives infrared light and converts the infrared light to a digital signal so as to enable each picture element of the focal plane to correspond to one pixel of an image; image data are converted to original grey values to be stored; for each pixel, gain and offset correction compensation is conducted in a multi-section correction mode according to the corresponding grey values, and a compensation result is obtained. Real-time dynamic background estimation is conducted on the compensation result, and an estimation background is obtained; estimation background offset processing is conducted on the image; an image obtained after offset processing is output. Compared with the prior art, balancing is conducted on calculated performance, image quality and implementation complexity, infrared correction images are continuously output in a blindness-free mode, computation complexity is reduced, the parameter prestorage number is reduced, and power dissipation of the whole system is reduced on the premise that image quality is ensured.
Owner:HIVINTEK OPTRONICS SUZHOU
Allowance gain circuit for analog-to-digital converter in pipeline structure
ActiveCN102006071AIncrease calibration rangeImprove reliabilityAnalogue/digital conversion calibration/testingCapacitanceDigital down converter
The invention belongs to the technical field of integrated circuits, in particular to an allowance gain circuit for an analog-to-digital converter in a pipeline structure. The allowance gain circuit at least comprises an operational amplifier, four comparators, three sampling capacitors, a feedback capacitor, six switches, an adder and a coding circuit, wherein results of the comparators are added through the adder and used for controlling the switches through the coding circuit. In the invention, the calibration range of the offset voltage of the comparators is increased by increasing the number of partial comparators and rearranging the positions of the comparators, and an obvious effect can be achieved especially in the allowance gain circuit of a multi-bit structure at each level.
Owner:FUDAN UNIV
A Calibration Method for Photoelectric Response Characteristics of Two-Dimensional Imaging Devices
ActiveCN102288385ALarge calibration rangeIncrease calibration rangeOptical apparatus testingBeam splittingLight spot
The invention relates to a photoelectric response characteristic calibration method for a two-dimensional imaging device, which comprises a ray diffraction grating, a focusing optical system, a two-dimensional imaging device to be calibrated and a computer system, wherein an incident light beam for calibrating the two-dimensional imaging device is a light beam parallel to the plane, the light beam is imaged on the photosensitive surface of the two-dimensional imaging device after being modulated by the space intensity of the ray diffraction grating and being converged by the focusing optical system, the incident light beam forms a series of diffraction sub light spots with modulated light intensity on the photosensitive surface of the two-dimensional imaging device through the beam splitting characteristic of the ray diffraction grating, a plurality of groups of measured data are fused through peak value measuring data of each diffraction sub light spot and peak value theoretical dataobtained by theoretical calculation, the measured data and the corresponding theoretical data are obtained, the two groups of data are combined for completing the photoelectric response characteristic calibration of the two-dimensional imaging device. The photoelectric response characteristic calibration method has high light energy utilization rate, is applicable to the photoelectric response characteristic calibration of the two-dimensional imaging device under the condition with strong light sources and is also applicable to weak light sources, and the calibration range is enlarged throughthe fusion of a plurality of groups of measured data.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Oscillation signal generation circuit
InactiveCN106026922AReduce phase noiseIncrease calibration rangePulse automatic controlPulse generation by logic circuitsCapacitanceEngineering
Owner:PANASONIC CORP
Mini distributed fiber temperature measuring calibration device and method
InactiveCN106482869AMeet spatial resolution requirementsRealize CalibrationThermometer testing/calibrationFiberElectrical resistance and conductance
The invention discloses a mini distributed fiber temperature measuring calibration device and method. The calibration device comprises a casing; an upper panel of the casing can be opened and closed, and is provided with through holes through which tested fibers can penetrate; the casing is internally provided with a detachable fiber winding column; the bottom of the casing is provided with heating resistance wires; the casing is internally provided with a heat-transfer fluid working medium and a temperature sensor; and the temperature sensor and the heating resistance wires are connected with a controller of the calibration device. A distributed temperature measuring device calibrate the fiber temperature coefficient in a miniaturized manner within the range from normal temperature to 200 DEG C, and the test device can be used to realize calibration and demonstration of a test site.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Camera module and optical instrument including same
PendingCN110169046ACorrection moveIncrease calibration rangeTelevision system detailsPrintersGyroscopeElectron
The present invention provides a camera module comprising: a lens assembly including a plurality of lenses; an image sensor for converting an optical signal transferred through the lens assembly intoan electric signal; a gyroscope (gyro) sensor for outputting a variation-amount signal in response to movement of the lens assembly and the image sensor; a stabilization control unit for determining,in response to the variation-amount signal, a first compensation value for optical image stabilization (OIS) and a second compensation value for electronic image stabilization (EIS); and a movement compensation unit for performing image stabilization according to the first compensation value and the second compensation value.
Owner:LG INNOTEK CO LTD
Method for determining buckling load-end shrinkage curves of deck longitudinal beam columns supported by cantilever crossbeams
ActiveCN107066658AGuaranteed reasonablenessShorten the timeGeometric CADSpecial data processing applicationsMechanical modelsCritical load
The invention provides a method for determining buckling load-end shrinkage curves of deck longitudinal beam columns supported by cantilever crossbeams, and belongs to the technical field of ship structural engineering. The method for determining buckling load-end shrinkage curves of deck longitudinal beam columns supported by cantilever crossbeams comprises the following steps of: 1, establishing a deck longitudinal beam column instability mechanical model after large-scale impact; 2, establishing a cantilever crossbeam mechanical equation and obtaining a lowest-order frequency formula; 3, establishing a cantilever crossbeam torsional rigidity calculation model and determining a torsional rigidity; 4, determining a support rigidity, for a deck longitudinal beam, of a crossbeam; 5, determining a longitudinal beam column buckling curve and a buckling critical load; and 6, determining a critical load-end shrinkage curve of the longitudinal beam column. The method provided by the invention is a theoretical method for rapidly obtaining the buckling load-end shrinkage curves of longitudinal beam columns supported by cantilever crossbeams after large-scale impact damage, so that the calculation is improved; and compared with a nonlinear finite element method, the method has the advantages of shortening the calculation time and improving the efficiency.
Owner:708TH RES INST OF CSSC
Method and device for correcting signal distortions in an amplifier device
ActiveCN1717863AMinimizes pulse width related effectsPulse Width Dependency CancellationAmplifier modifications to reduce non-linear distortionAmplifier with semiconductor-devices/discharge-tubesEngineeringDistortion
The invention relates to a method for correcting signal distortions in an amplifier device (20), which is characterized in that a digital PWM modulator (17) is operated with a frequency-variable clock (18). The invention also relates to a device for correcting signal distortions in an amplifier device (20).
Owner:APPLE INC
Calibration apparatus and method for programmable response frequency selecting elements
ActiveUS7627443B2Increase calibration rangeLow costReceivers monitoringResonant circuit tuningCapacitanceControl signal
Owner:IND TECH RES INST
Color difference processing method and device, ink-jet printer and storage medium
ActiveCN112477437AIncrease calibration rangePicture signal generatorsPrintingComputer printingInk printer
The invention relates to the technical field of ink-jet printing, in particular to a color difference processing method and device, an ink-jet printer and a storage medium. According to the color difference processing method and device, the ink-jet printer and the storage medium, the abnormal area on a spray head can be determined, and the number of ink drops sprayed by spray holes of the abnormalarea in the unit area is adjusted according to the preset number parameter, so that the color difference generated when the spray head sprays and prints the target pattern is within the preset allowable range, wherein the abnormal area is a distribution area of the spray holes generating color difference on the spray head; and by adjusting the number of the ink drops sprayed by the spray holes inthe abnormal area on the spray head in a unit area, the brightness of colors sprayed by the spray holes in the abnormal area can be changed between the lightest brightness and the deepest brightnesswhich can be formed by the spray head, so that the calibration range of color difference generated by the spray head is greatly enlarged.
Owner:DONGGUAN CNTOP PRINTING EQUIP CO
Speed calibrator and speed calibration method based on Beidou BDS high-precision positioning
ActiveCN111999528AImprove accuracyLow costSatellite radio beaconingTesting/calibration of speed/acceleration/shock measurement devicesComputer hardwareComputer-on-module
The invention discloses a speed calibrator and a speed calibration method based on Beidou BDS high-precision positioning. The speed calibrator based on Beidou BDS high-precision positioning comprisesa vehicle-mounted machine and a BDS background. The vehicle-mounted machine comprises a shell, a BDS receiving chip, a GPS receiving chip, a control system, a communication module and an LED display screen; the BDS receiving chip, the GPS receiving chip, the communication module and the LED display screen are all in control connection with the control system; the BDS background comprises a signalcollection module, a computer, a signal emission module, a partition module and a storage module. The speed calibrator is simple in structure, convenient to operate, capable of selecting a proper speed calibration method according to the actual satellite signal capture situation, high in calibration precision and suitable for market popularization.
Owner:NANNING GUANGBO TECH
Calibration metering device of thin-film array-type distributed pressure sensing system
InactiveCN109115400AIncrease calibration rangeIncrease the measurement rangeForce/torque/work measurement apparatus calibration/testingSystematic measurementEngineering
The invention relates to the mechanical metering device field and especially relates to the calibration metering device of a thin-film array-type distributed pressure sensing system. The device comprises a standard weight, a thin film array distributed pressure sensor used for detecting the standard weight, a calibration groove, a limiting clamping plate which is arranged in the calibration grooveand is cooperated with the calibration groove, and a silicone pad arranged between the calibration groove and the limiting clamping plate. A gap is arranged between the calibration groove and the limiting clamping plate. A calibration boss is arranged in the gap. The thin film array distributed pressure sensor is arranged between the silicone pad and the limiting clamping plate. The standard weight and the calibration boss are cooperated. Compared with a traditional metering tool, by using the device of the invention, the weight of a calibration weight can be applied more than 30kg, a calibration range is increased, the measurement range of the pressure sensing system is widened and the usage range of the thin film array distributed pressure sensor is enlarged.
Owner:国营芜湖机械厂
Plane correcting device for silicon steel column
ActiveCN107377683AEasy to fixReduce workloadMetal-working feeding devicesPositioning devicesFistSteel columns
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
Method and device for eliminating crossed polarization jamming
ActiveCN102833199BIncrease calibration rangeAvoid disadvantagesTransmitter/receiver shaping networksCommunications systemCross polarization
The invention discloses a method and a device for eliminating the crossed polarization jamming in a wireless communication system. According to the invention, by automatically detecting an error value between a signal subjected to elimination of the crossed polarization and an ideal signal, a phase deviation value of both receiving and transmitting ends of a master polarization direction signal and a relative phase deviation value of the master polarization direction signal and a slave polarization direction signal are adaptively estimated and a coefficient of a filter is updated; the slave polarization direction signal is regulated by utilizing the relative phase deviation value of the master polarization direction signal and the slave polarization direction signal and the coefficient of the filter and the master polarization direction signal is regulated by utilizing the phase deviation value of both the receiving and transmitting ends of the master polarization direction signal and the coefficient of the filter; then aiming at the regulated master polarization direction signal and the regulated slave polarization direction signal, the signal subjected to elimination of the crossed polarization is updated; and the elimination of the crossed polarization is completed until the error value meets the error requirement set by technical indexes.
Owner:安徽省菲特科技股份有限公司 +1
Auxiliary device for calibrating water pump mounting shafts
ActiveCN113352158AIncrease productivityIncrease calibration rangeGrinding carriagesRevolution surface grinding machinesClassical mechanicsControl theory
The invention relates to the field of mounting shaft calibration and particularly relates to an auxiliary device for calibrating water pump mounting shafts. The auxiliary device comprises a support frame, a displacement assembly, a calibration assembly and a fixing assembly, wherein a through groove is formed in one side of the support frame; the displacement assembly is fixedly mounted on the support frame; the calibration assembly is connected with the output end of the displacement assembly and is used for polishing and calibrating mounting shaft bodies; the fixing assembly is mounted in the support frame and is located on one side of the calibration assembly; the fixing assembly comprises a rotating mechanism and a locking mechanism; the rotating mechanism is connected with the support frame and is used for driving the mounting shaft bodies to rotate; the locking mechanism is arranged in the rotating mechanism, is connected with the output end of the rotating mechanism and is used for locking and fixing the mounting shaft bodies. According to the auxiliary device for calibrating the water pump mounting shafts, the diameters of the water pump mounting shafts can be calibrated in all directions; through the design of the rotating mechanism and the displacement assembly, the calibration range is greatly widened; any positions of the mounting shafts can be polished and calibrated; and the production efficiency of the mounting shafts is improved.
Owner:JIANGSU HYDRAULIC ENG CONSTR
An electric vehicle drive motor installation component
ActiveCN113103850BEasy to assembleIncrease calibration rangeElectric propulsion mountingElectric machineDrive motor
Owner:HEMEI (ZHEJIANG) AUTOMOBILE CO LTD
An infrared focal plane detector image correction method and system
ActiveCN103491318BIncrease calibration rangeHigh precisionImage enhancementTelevision system detailsComputation complexityImaging quality
Owner:HIVINTEK OPTRONICS SUZHOU
Allowance gain circuit for analog-to-digital converter in pipeline structure
ActiveCN102006071BIncrease calibration rangeImprove reliabilityAnalogue/digital conversion calibration/testingCapacitanceDigital down converter
Owner:FUDAN UNIV
A color difference processing method, device, inkjet printer and storage medium
ActiveCN112477437BIncrease calibration rangePicture signal generatorsPrintingComputer printingInk printer
The invention relates to the technical field of inkjet printing, in particular to a color difference processing method, device, inkjet printer and storage medium. The color difference processing method, device, inkjet printer, and storage medium provided by the embodiments of the present invention can determine the abnormal area on the nozzle, and adjust the number of ink droplets ejected by the nozzle holes in the abnormal area within a unit area according to the preset quantity parameters. Quantity, so that the color difference generated when the nozzle prints the target pattern is within the preset allowable range; where, the abnormal area is the distribution area of the nozzle hole that produces the color difference on the nozzle. By adjusting the number of ink droplets ejected per unit area by the nozzle holes in the abnormal area on the nozzle, the color brightness of the nozzle holes in the abnormal area can be printed between the lightness of the lightest and darkest colors that the nozzle can form. Thereby, the calibration range of the chromatic aberration produced by the print head is greatly improved.
Owner:DONGGUAN CNTOP PRINTING EQUIP CO
Photoelectric response characteristic calibration method for two-dimensional imaging device
ActiveCN102288385BLarge calibration rangeIncrease calibration rangeOptical apparatus testingLight spotLight energy
The invention relates to a photoelectric response characteristic calibration method for a two-dimensional imaging device, which comprises a ray diffraction grating, a focusing optical system, a two-dimensional imaging device to be calibrated and a computer system, wherein an incident light beam for calibrating the two-dimensional imaging device is a light beam parallel to the plane, the light beam is imaged on the photosensitive surface of the two-dimensional imaging device after being modulated by the space intensity of the ray diffraction grating and being converged by the focusing optical system, the incident light beam forms a series of diffraction sub light spots with modulated light intensity on the photosensitive surface of the two-dimensional imaging device through the beam splitting characteristic of the ray diffraction grating, a plurality of groups of measured data are fused through peak value measuring data of each diffraction sub light spot and peak value theoretical dataobtained by theoretical calculation, the measured data and the corresponding theoretical data are obtained, the two groups of data are combined for completing the photoelectric response characteristic calibration of the two-dimensional imaging device. The photoelectric response characteristic calibration method has high light energy utilization rate, is applicable to the photoelectric response characteristic calibration of the two-dimensional imaging device under the condition with strong light sources and is also applicable to weak light sources, and the calibration range is enlarged throughthe fusion of a plurality of groups of measured data.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Speed calibrator and speed calibration method based on Beidou bds high-precision positioning
ActiveCN111999528BImprove accuracyLow costSatellite radio beaconingTesting/calibration of speed/acceleration/shock measurement devicesComputer hardwareComputer-on-module
The invention discloses a speed calibrator based on Beidou BDS high-precision positioning and a speed calibration method. The speed calibrator based on Beidou BDS high-precision positioning includes: a vehicle-mounted machine and a BDS background; wherein, the vehicle-mounted machine includes a shell, a BDS receiving chip, GPS receiving chip, control system, communication module, LED display screen; wherein, BDS receiving chip, GPS receiving chip, communication module and LED display screen are all connected with the control system control; BDS background includes signal collection module, computer, signal emission module, partition module and storage module; the invention has simple structure and convenient operation, can select a suitable speed calibration method according to the actual satellite signal capture situation, has high calibration precision, and is suitable for market promotion.
Owner:NANNING GUANGBO TECH
Mounting component for driving motor of electric automobile
ActiveCN113103850AEasy to assembleIncrease the calibration rangeElectric propulsion mountingElectric machineryAutomotive engineering
The invention relates to the technical field of motor mounting parts, and discloses a mounting component for an electric vehicle driving motor, which comprises a connecting disc and a containing groove formed in the connecting disc, a supporting device used for supporting a driving motor is slidably connected into the containing groove, the supporting device comprises a supporting plate, the supporting plate is slidably connected into the containing groove, a square groove is formed in the supporting plate, an overturning plate is rotationally connected into the square groove through a second rotating shaft, a first through hole is formed in the overturning plate, an extrusion device used for limiting the supporting device is further fixedly installed in the containing groove, and an extrusion device is located below the supporting device. The supporting device and the extrusion device are arranged, the supporting device is limited through the extrusion device, the supporting device is changed so as to limit the position of an electric vehicle driving motor connecting base, the equipment can calibrate the position of the electric vehicle driving motor connecting base, and assembling is convenient.
Owner:HEMEI (ZHEJIANG) AUTOMOBILE CO LTD
A Determination Method of Load-Shrinkage Curve for Deck Longitudinal Beam-column Buckling
ActiveCN107066658BDesign effective guidanceReasonable designGeometric CADSpecial data processing applicationsMechanical modelsCritical load
The invention provides a method for determining the load-shrinkage curve of deck longitudinal beam column buckling supported by cantilever beams, and belongs to the technical field of ship structure engineering. A load-end shrinkage curve determination method for the buckling of deck longitudinal beams and columns supported by cantilever beams, comprising the following steps, the first step is to establish a mechanical model of deck longitudinal beams and columns after a large-scale collision; the second step is to Establish the mechanical equation of the cantilever beam to obtain the lowest order frequency formula; the third step is to establish the torsional stiffness calculation model of the cantilever beam to determine the torsional stiffness; the fourth step is to determine the support stiffness of the beam to the deck longitudinal; the fifth step is to determine the longitudinal beam column Buckling load and buckling critical load; the 6th step, determine the critical load-end shrinkage curve of longitudinal beam column; the present invention is to obtain the load-end shrinkage curve of longitudinal beam column buckling supported by cantilever crossbeam after large-scale collision damage rapidly The theoretical method improves the calculation accuracy, shortens the calculation time and improves the efficiency compared with the nonlinear finite element method.
Owner:708TH RES INST OF CSSC
A Dielectric Virtual Device for Standard Calibration of Dielectric Loss Factor of High Voltage Capacitor
InactiveCN104345293BRealize change adjustmentIncrease calibration rangeElectrical measurementsCapacitanceHigh voltage capacitors
The invention discloses a medium virtual device for standard calibration of a dielectric loss factor of a high-voltage capacitor. The device comprises a current sampling circuit, a phase shift circuit, a constant current output circuit, a micro-processing unit controller and an amplitude modulation circuit, wherein the amplitude modulation circuit responds to change of output currents of capacitors of different standards; the input of the amplitude modulation circuit is connected with the output of the phase shift circuit, and the output of the amplitude modulation circuit is connected with the constant current output circuit; the micro-processing unit controller controls and is connected with the amplitude modulation circuit. According to the device, simulation of the dielectric loss of the capacitor under high voltage can be realized, a simulative resistor does not generate loss of electric energy, non-contact switching can be realized under the condition of electrification, the dielectric correction range is expanded, the working is safe, and the operation is easy; apart from the simulative resistor, change adjustment of the capacitance is also realized, and one standard capacitor is expanded into a plurality of standard capacitors.
Owner:STATE GRID CORP OF CHINA +3
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