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35 results about "Ambient field" patented technology
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Apparatus and method for stabilizing an image from an endoscopic camera
A video camera unit used with an endoscope is provided with sensors sensing an ambient field to detect rotation of the camera unit about an axis causing rotation of an image generated from the output signal of the camera unit. This output signal is modified to produce a stabilized video signal, producing an image held at a preferred angle. In one embodiment, two ambient fields, such as gravity and a magnetic field are alternately used.
Owner:WIITA BRUCE E +1
Magnetoelastic torque sensor with ambient field rejection
ActiveUS8087304B2Cancellation effectEliminate the effects ofSolid-state devicesWork measurementCondensed matter physicsTorque sensor
Owner:METHODE ELETRONICS INC
Magnetoelastic torque sensor with ambient field rejection
ActiveUS20090230953A1Cancellation effectEliminate the effects ofSolid-state devicesWork measurementCondensed matter physicsTorque sensor
The present invention involves a method and apparatus for canceling the effects of magnetic field noise in a torque sensor by placing three sets of magnetic field sensors around a shaft, the first set of field sensors being placed in the central region of the shaft and the second and third sets of field sensors being placed on the right side and left side of the field sensors placed at the central region, respectively. A torque-induced magnetic field is not cancelled with this arrangement of field sensors but a magnetic near field from a near field source is cancelled.
Owner:METHODE ELETRONICS INC
Downscaling compensation technique for satellite precipitation data
ActiveCN106776481AHigh resolutionHigh precisionComplex mathematical operationsSatellite precipitationImage resolution
The invention discloses a downscaling compensation technique for satellite precipitation data. Firstly, based on a mixed geographically weighted regression method, a mixed geographically weighted regression between low resolution satellite precipitation data and multiple high resolution variables is constructed. Secondly, based on the mixed geographically weighted regression and multiple high resolution variables, the downscaling precipitation data with high resolution is calculated. Thirdly, regarding the downscaling precipitation data with high resolution as an ambient field, a difference value distribution diagram with high resolution is acquired by calculating. Lastly, according to the difference value distribution diagram, the downscaling precipitation data with high resolution is calculated and the satellite downscaling precipitation compensation data is acquired. The downscaling compensation technique for satellite precipitation data is capable of obtaining high-precision satellite precipitation data with high resolution and being applied to the calculation of meteorological drought index and a driving hydrological model and providing high-precision input data for the hydrological model.
Owner:HOHAI UNIV
Reduced Ambient Fields Error In A Magnetoelastic Torque Sensor System
InactiveUS20110162464A1Minimize error amountWork measurementTorque measurementHigh magnetic field strengthMagnetic source
An improved magnetic torque transducer involves a method and apparatus for compensating effects of uniform and / or non-uniform magnetic sources by placing three sets of magnetic field sensors around a shaft with at least one magnetized zone. The set of primary magnetic field sensor or sensors is placed proximate to the magnetized zone, both the second and third sets of secondary magnetic field sensors being placed by pre-determined distances to the primary set of magnetic field sensor or sensors, so that primary field sensors always in a position with higher magnetic field strength arise from applied torque than that of secondary sensors. And a method is developed to use the second and third signals from secondary sensors to adjust the primary signal to compensating for the effects of the uniform and / or non-uniform ambient magnetic field sources.
Owner:SMTS
Magnetoelastic torque sensor with ambient field rejection
ActiveUS20120074933A1Cancellation effectEliminate the effects ofWork measurementMagnetic field measurement using galvano-magnetic devicesCondensed matter physicsTorque sensor
Owner:METHODE ELETRONICS INC
Numerical weather prediction method based on mixed ambient field
ActiveCN106339568AHigh precisionSave computing resourcesForecastingSpecial data processing applicationsNumerical weather predictionObservation data
The invention provides a numerical weather prediction method based on a mixed ambient field. According to the method, a mixed data ambient field of numerical weather prediction is generated based on the existing data of the relevant weather data and forecast data; initial parameters required in establishing a WRF mode are set to complete initial establishment of the WRF mode; effective meteorological data on feature level grid of the WRF mode is obtained; in the WRF mode, conclusion parameters of the numerical weather prediction is obtained by calculation according to the effective meteorological data; the conclusion parameters are extracted and processed to obtain conclusion data diagram of the numerical weather prediction. The present invention provides the mixed data using the reanalyzed data and the predicted background field as the background data for driving the meso-scale numerical weather prediction for numerical weather prediction; as the reanalyzed data itself assimilates a large number of observation data and the accuracy is high, which can significantly improve the accuracy of numerical weather prediction and save a lot of computing resources.
Owner:CHINA ELECTRIC POWER RES INST +4
Method for extracting geoscience spatial information based on generalized self-similarity principle
InactiveCN101504659AGreat practicabilityImprove extraction accuracyComplex mathematical operationsICT adaptationResource assessmentBoundary effects
The invention relates to a method for extracting topographical spatial information based on a generalized self-similarity principle, which comprises: transforming the topographical spatial information into an energy spectral density space by Fourier transformation; eliminating the influence of boundary effect generated by the topographical data boundary part; drawing a double logarithmic scatter graph formed by the energy spectral density value (S) and the area (A) included by the isometric line of the energy spectral density value (S), and detecting the fractal rules of the energy spectral density and the area; determining the number and the interval of generalized self-similarity relations; determining the threshold and a corresponding fractal filter; and transforming filtered energy spectrum information back to a spatial domain by inverse Fourier transformation, and achieving the aims of decomposing anomaly and ambient fields and extracting interested topographical spatial information. The method has the advantages of wide practicality, high extraction precision and the like, and is suitable for topographical data such as geological data, mineral data, geochemical data, geophysical data, remote sensing data and the like, and the operations of topographical information extraction and topographical data mining such as mineral exploration, resource assessment, environmental pollution assessment, natural disaster analysis, marine vortex extraction and the like.
Owner:成秋明 +3
Nonlinear least square tri-axial vector sensor high-precision correction method
The invention relates to a nonlinear least square tri-axial vector sensor high-precision correction method. Influences of three aspects including tri-axial non-orthogonality, calibration coefficient inconformity and zero polarization on a measured value are comprehensively considered to obtain a sensor error correction model having the common applicability on common tri-axial vector sensors; a high-precision scalar ambient field measurement instrument is introduced to provide expected output; a tri-axial vector sensor intrinsic parameter identification optimizing model is further built; the basic idea of a nonlinear least square is combined to solve the model to achieve tri-axial vector sensor intrinsic parameter identification and error correction. Compared with the prior art, the high-precision correction method has the advantages that the common applicability for the common tri-axial vector sensors is achieved, the influences of the tri-axial non-orthogonality, the all-axial calibration coefficient inconformity and the zero polarization on the measured value are comprehensively considered, influences of instrument system errors on the measured value are removed, and requirements for experiment operation and instrument equipment are not high.
Owner:PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
Ocean controllable source electromagnetic response calculating method based on actually-measured launcher morphology data
InactiveCN106443803APrecise monitoring of morphological parametersImprove accuracyElectric/magnetic detectionAcoustic wave reradiationInduction fieldElectromagnetic response
The invention belongs to the technical field of geophysical exploration and relates to an ocean controllable source electromagnetic response calculating method. The method is characterized in that a GPS / depth sensor mounted on a launcher is used to measure the position deviation of the launcher and a preset measuring line, substituting the position deviation data into a geological calculation model, allowing an electric dipole to be equivalent to a finite line source and performing subsection calculation, breaking up a sectioned long straight wire of optional morphology into horizontal and vertical equivalent electric dipoles under an observation coordinate system, respectively calculating the electromagnetic response of each section, using an analytic formula to solve an ambient field, using a staggered finite volume method to solve an induction field, and superimposing vector fields to obtain sectioned wires and the ocean controllable source electromagnetic response based on the actually-measured launcher morphology data. The method has the advantages that launcher morphology parameters can be monitored precisely, the method can approach the actual operation working conditions to the maximum extent, and the accuracy of electromagnetic response calculation and inversion can be increased effectively by using a finite line source treatment method.
Owner:OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
Geomagnetic field disturbance real-time analysis forecasting system
InactiveCN101726758AAccurate judgmentSolve the problem that the index of the overall change degree of the geomagnetic disturbance field cannot be obtained in real timeElectric/magnetic detectionAcoustic wave reradiationFeature vectorReal time analysis
The invention relates to a geomagnetic field disturbance real-time analysis forecasting system comprising a historical and real-time observation data device, a local geomagnetic field disturbance analyzing device and a geomagnetic field disturbance forecasting module, wherein the historical and real-time observation data device is used for monitoring the varying conditions of a geomagnetic field in real time; the local geomagnetic field disturbance analyzing device comprises a data preprocessing and storing device, a multiple regression analysis model device, a geomagnetic ambient field dynamic extracting device and a real-time geomagnetic field disturbance condition analyzing device; and the geomagnetic field disturbance forecasting module comprises a natural orthogonal decomposition feature vector model device, a feature vector set constructing device, a weighing single-step forecasting device, a geomagnetic field disturbance forecasting analyzing and storing device and a geomagnetic field disturbance forecasting output device, thereby providing the geomagnetic field disturbance real-time analysis forecasting system for forecasting the future geomagnetic field disturbance degree through observing data and analyzing the integral variation degree of the local geomagnetic field in real time by utilizing a single geomagnetic station.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
Ambient field level monitor device for radio mobile terminal
InactiveUS6667966B2Synchronisation arrangementFrequency-division multiplex detailsObservational errorRC time constant
The present invention relates to an ambient field level monitor device for a radio mobile terminal, comprising a reception unit for receiving a radio signal arriving at the radio mobile terminal to output a reception signal originating from the received radio signal and further to output an ambient field level signal, a synchronization decision section for receiving the reception signal from the reception unit to judge whether or not the reception unit is in synchronism with the received radio signal, and a time constant variable type ambient field level monitoring unit for receiving the ambient field level signal from the reception unit. If the synchronization decision section judges that the reception unit is out of synchronism with the received radio signal, the ambient field level monitoring unit increases its time constant so that the time constant exceeds its time constant to be taken for when the synchronization decision section judges that the reception unit is in synchronism with the received radio signal and if the synchronization decision section judges that the reception unit is synchronism with the radio signal, the ambient field level monitoring unit decreases the time constant. This reduces the measurement error caused by the difference between sampling timings, thereby enabling stable RSSI value detection irrespective of a phase synchronization condition of a mobile station to improve the detection accuracy.
Owner:FUJITSU LTD
Ambient field level monitor device for radio mobile terminal
InactiveUS20030103488A1Synchronisation arrangementFrequency-division multiplex detailsObservational errorRC time constant
The present invention relates to an ambient field level monitor device for a radio mobile terminal, comprising a reception unit for receiving a radio signal arriving at the radio mobile terminal to output a reception signal originating from the received radio signal and further to output an ambient field level signal, a synchronization decision section for receiving the reception signal from the reception unit to judge whether or not the reception unit is in synchronism with the received radio signal, and a time constant variable type ambient field level monitoring unit for receiving the ambient field level signal from the reception unit. If the synchronization decision section judges that the reception unit is out of synchronism with the received radio signal, the ambient field level monitoring unit increases its time constant so that the time constant exceeds its time constant to be taken for when the synchronization decision section judges that the reception unit is in synchronism with the received radio signal and if the synchronization decision section judges that the reception unit is synchronism with the radio signal, the ambient field level monitoring unit decreases the time constant. This reduces the measurement error caused by the difference between sampling timings, thereby enabling stable RSSI value detection irrespective of a phase synchronization condition of a mobile station to improve the detection accuracy.
Owner:FUJITSU LTD
Image repairing method and device
ActiveUS20150363906A1Precise positioningHigh restoration accuracyImage enhancementImage analysisImage restorationComputer vision
Provided are an image restoration method and device. The method comprises: processing image blocks, which are initially registered, to acquire connection curves among the image blocks; constructing an ambient field of images to be restored by means of the connection curve; by minimizing energy of the connection curve in the ambient field, registering the image blocks; and performing image filling on the registered image blocks to acquire a restored image. The device comprises: a processing unit used for processing the image blocks, which are initially registered, to acquire the connection curve among the image blocks; an ambient field construction unit used for constructing the ambient field of the image to be restored by means of the connection curve; a registering unit used for registering the image blocks by minimizing the energy of the connection curve in the ambient field; and a filling unit used for performing image filling on the registered image blocks to acquire the restored image. The present invention can be applied to restore any damaged image and improve the accuracy.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
See-through display device capable of ensuring ambient field-of-view
InactiveUS20150346493A1Efficient beam inducing structureBright and clear imagePrismsPolarising elementsSee-through displayDisplay device
There is provided a see-through display device capable of ensuring an ambient field-of-view which includes a display control board; a display device configured to emit image light according to an image signal generated in the display control board; a first prism that is located on a bottom surface of the display device, and a second emission surface perpendicular to the incident surface; a partial reflection filter configured to reflect some image light emitted from the first prism and penetrate the remaining image light; and a second prism that is located on a bottom surface of the partial reflection filter, has a length greater than the interocular distance, and in which an incident surface having the same angle as the emission surface of the first prism, a curved reflection surface in which image light incident on the incident surface is reflected with positive power.
Owner:GREEN OPTICS CO LTD
Method for eliminating ambient fields in transient electromagnetic data through ratio method
The invention relates to the technical field of geophysical exploration, in particular to a method for eliminating ambient fields in transient electromagnetic data through a ratio method. The method can eliminate the ambient fields in the transient electromagnetic data and extract required abnormal-field data. The method includes the steps of (1) judging the distribution directions of the ambient fields along with measuring lines according to experiences, (2) carrying out mesh interpolations on the data in the X direction and the Y direction according to a rule, (3) getting a data average value of one measuring line according to the directions determined in the step (1), (4) comparing data values of measuring points on the measuring line with the average value to get the ratios, (5) repeatedly carrying out the step (3) and the step (4) on each measuring line, (6) drawing a graph through the ratios of all the measuring points, (7) judging whether the drawing results are consistent with the directions judged in the step (1) or not, (8) judging whether the ratios in the two directions are required to be combined or not, if the ratios in the two directions are required to be combined, combining the ratios according to a following formula, drawing the graph through the combined data, completing the whole process, and if the ratios in the two directions are not required to be combined, directly completing the whole process.
Owner:XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
Method for Reducing the Amount of Ambient Radio Frequency Electromagnetic and Pulsating Magnetic Fields, Method for Drying Wet Walls, and Using the Device for Drying Wet Walls
ActiveUS20210048246A1Easily and completely reusedReduce the amount requiredNear-field transmissionDrying solid materials with heatEngineeringRadio frequency
In a method for reducing the amount of ambient radio frequency electromagnetic and pulsating magnetic fields (“electrosmog”), resonance circuit units placed in a predetermined environment are energized by radio frequency electromagnetic and pulsating magnetic field energy transmitted to the resonance circuits by an electromagnetically connected antenna, at least a portion of energy is consumed as resonance circuit loss, reducing the amount of the ambient fields.An apparatus implementing the method comprises passive resonance circuits formed by an antenna comprising logarithmic spiral coils with identical or different pitches and passive resonance circuits formed by opposite logarithmic spiral coil panels, the resonance circuits are connected to each other and to the antenna by electrically conductive spacers, a shielding metal plate connected to ground potential is arranged adjacent to the antenna, latter is coaxial with the resonance circuit panels, which are also connected to each other via a supply line.
Owner:LEVAI SANDOR
Magnetic coupling for stereo loudspeaker systems
A stereo loudspeaker system with a right channel and a left channel respectively feeding R and L signals to four speakers (including a right main speaker, a right sub-speaker, a left main speaker and a left sub-speaker) includes a transformer that, depending on the frequency, magnetically couples or isolates the two channels at the right and left sub-speakers. At low frequencies, the transformer isolates the right channel from the left one so that the R signal goes primarily only to the two right speakers, and the L signal goes primarily only to the two left ones. At high frequencies, both the right and left main speakers still receive their respective R and L signals; however, the transformer's magnet coupling conveys a differential R-L signal to the right sub-speaker and a differential L-R signal to the left sub-speaker, thereby producing an expanded acoustic image and realistic ambient field.
Owner:JOHNSTON ROBERT G
Orienting and positioning method of three-component gradient measurement of magnetic fields inside wells for magnetic ores outside wells
ActiveCN102621583ASolving unorientable puzzlesAngle measurementElectric/magnetic detection for well-loggingMagnetic field gradientMagnetic anomaly
The invention provides an orienting and positioning method of three-component gradient measurement of magnetic fields inside wells for magnetic ores outside wells, which includes orienting magnetic ores outside wells and positioning ores. An adopted direction method of horizontal magnetic field gradient anomaly has the advantages of being not disturbed by ambient fields due to the inaccurate inclinometer of nonmagnetic principles, capable of positioning the magnetic ores outside wells omnibearingly; and not only suitable for positioning magnetic ores in the north-south direction of the drilling, but also capable of positioning magnetic ores in the east-west direction of the drilling; and solving the problem that the horizontal magnetic anomaly is incorrect due to the drift azimuth and magnetic ores in the east-west direction of the drilling cannot be positioned.
Owner:中色杰泰地球物理科技(北京)有限公司
Brain blood oxygen level measuring method based on magnetic resonance
ActiveCN104490393ARestore Susceptibility ValueSensorsBlood characterising devicesVenous bloodOxygen metabolism
The invention provides a brain blood oxygen level measuring method based on magnetic resonance. The measuring method includes acquiring an amplitude diagram and a phase diagram of brain tissues; standardizing the amplitude diagram into a noise SD diagram, and acquiring a standardized diagram Ic according to linear fitting of the noise SD diagram; unwrapping the phase diagram to acquire a standard field diagram; putting the standard field diagram and the standardized diagram Ic into a regularization constraint rule to acquire a magnetism sensitiveness matrix without an ambient field; acquiring a vein oxygen saturation value and an oxygen metabolism parameter according to the magnetism sensitiveness matrix. The brain blood oxygen level measuring method has the advantages that magnetic field phase changes generated by air tissues are removed, so that magnetism sensitiveness values of the tissues are regained better, and venous blood oxygen saturation Yv and residual saturation of hemoglobin in venous blood, namely an oxygen extraction fraction (OEF), are acquired.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Atmospheric heavy pollution forecast method based on combination of numerical model and statistic analysis
InactiveCN103163278BImprove callout rateAddress critical flaws that lack real physical meaningWeather condition predictionICT adaptationHigh concentrationHuman body
An atmospheric heavy pollution forecast method based on a combination of a numerical model and a statistic analysis includes that: national centers for environmental prediction (NCEP) global forecast ambient field data are obtained; a forecast trigger command is compulsively generated by manual power or automatically generated after the operation of a meteorological model finishes; a forecast command is started to obtain a meteorological factor data set of a simulation area and surrounding areas; air quality monitoring data are obtained; a forecast factor set data file is generated; the visibility of a forecast day is obtained through a visibility forecast sub-mode; an air quality level of the forecast day is differentiated in a qualitative mode through a pollution level initial differentiation sub-mode; a weather type of the forecast day is diagnosed and identified through a weather type identification sub-mode; pollutant concentration of the forecast day is calculated through a heavy pollution quantitative forecast sub-mode; a hazard level of the pollution level to a human body is confirmed, and administrators are provided with a decision basis for emergency management. Compared with a high concentration pollution weather forecast effect of existing air quality forecast systems at home and abroad, the atmospheric heavy pollution forecast method based on the combination of the numerical model and the statistic analysis remarkably improves the air pollution forecast effect.
Owner:BEIJING UNIV OF TECH
A method for measuring brain blood oxygen level by magnetic resonance
ActiveCN104490393BRestore Susceptibility ValueSensorsBlood characterising devicesVenous bloodOxygen metabolism
The invention provides a brain blood oxygen level measuring method based on magnetic resonance. The measuring method includes acquiring an amplitude diagram and a phase diagram of brain tissues; standardizing the amplitude diagram into a noise SD diagram, and acquiring a standardized diagram Ic according to linear fitting of the noise SD diagram; unwrapping the phase diagram to acquire a standard field diagram; putting the standard field diagram and the standardized diagram Ic into a regularization constraint rule to acquire a magnetism sensitiveness matrix without an ambient field; acquiring a vein oxygen saturation value and an oxygen metabolism parameter according to the magnetism sensitiveness matrix. The brain blood oxygen level measuring method has the advantages that magnetic field phase changes generated by air tissues are removed, so that magnetism sensitiveness values of the tissues are regained better, and venous blood oxygen saturation Yv and residual saturation of hemoglobin in venous blood, namely an oxygen extraction fraction (OEF), are acquired.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
A Method of Evapotranspiration Data Assimilation Based on Distributed Time-varying Gain Hydrological Model
InactiveCN104765981BReduce uncertaintyHigh simulationSpecial data processing applicationsObservation dataData assimilation
The invention discloses an evapotranspiration data assimilation method based on a distributed time varying gain hydrological model. The method includes the following steps that first, data preparation is conducted, and daily evapotranspiration is obtained based on a remote sensing model and flux observation data to be used for 'observation'; second, an initial ambient field is generated and model simulation is driven; third, when 'observation' data occur, an observation field and a prediction field are obtained; fourth, an analysis field is acquired in an assimilation mode through an ensemble Kalman filtering algorithm; fifth, the ambient field is updated. According to the method, through the data assimilation technology, an evapotranspiration result with high precision is used as observation information, the hydrological model is adjusted to operate, error accumulation is reduced, and an evapotranspiration sequence with high precision and continuous time is simulated. Compared with the prior art, the evapotranspiration can be assimilated directly through the method, the model nondeterminacy can be lowered, operating is easy, a water cycle physical mechanism is realized, and the method can be widely applied to accurately estimating and continuously acquiring region evapotranspiration.
Owner:INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
Low- and high-temperature superconducting hybrid magnets for high background fields
InactiveCN103617859BGuaranteed uptimeIncrease the maximum operating currentInductances/transformers/magnets manufactureSuperconducting magnets/coilsSuperconducting CoilsRoom-temperature superconductor
The invention discloses a low-temperature and high-temperature superconductor mixed magnet for a high ambient field. The low-temperature and high-temperature superconductor mixed magnet for the high ambient field comprises an inner high-temperature superconductor magnet subassembly and an outer low-temperature superconductor subassembly; and after being respectively machined and formed independently, the inner high-temperature superconductor magnet subassembly and the outer low-temperature superconductor subassembly are welded in a nested manner to form a whole structure. On the premise that a superconductor magnet system can normally work, a superconductor safely runs under the high ambient field, the highest running current of the superconductor magnet is increased, and the running performance of the superconductor magnet is further improved. Moreover, a low-temperature superconductor magnet is arranged on the outside of a mixed magnet coil, so that the processing and manufacturing cost of the magnet coil can be effectively reduced.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
Multi-field simultaneous automatic measurement device for indoor environmental field
InactiveCN103776491BShorten the timeReduce mistakesMaterial analysisHuman–machine interfaceMeasurement device
The invention discloses an automatic measuring device for multi-field simultaneous automatic measurement in an indoor environment field. The automatic measuring device comprises a three-dimensional motion system, a control system and a data acquisition system. The three-dimensional motion system is composed of a longitudinal linear module, a vertical linear module and a transverse linear module according to a three-dimensional coordinate axis mode and an instrument carrying platform for installation of a measuring instrument can be arranged on the three-dimensional motion system. The control system comprises a human-computer interface device, a programmable logic controller and three motor drivers. The data acquisition system comprises the measuring instrument, the programmable logic controller, a data acquisition card and a computer. The automatic measuring device can achieve multi-field simultaneous measurement of the environment field and reduce errors caused by asynchrony of multi-field measurement time, integration of control and measurement is achieved, influence on an experiment by personnel is reduced, the accuracy and efficiency of a test are improved, personnel operation is simplified, time spent on manual data processing is shortened, and errors of manual data processing are reduced.
Owner:TIANJIN UNIV +1
Geomagnetic field disturbance real-time analysis forecasting system
InactiveCN101726758BAccurate judgmentSolving the puzzle of degree of change metricsElectric/magnetic detectionAcoustic wave reradiationReal time analysisRegression analysis
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
Method of Orientation and Positioning of Outer-hole Magnetic Body by Three-Component Gradient Measurement of Magnetic Field in Borehole
ActiveCN102621583BSolving unorientable puzzlesElectric/magnetic detection for well-loggingAngle measurementMagnetic field gradientMagnetic anomaly
The invention provides an orienting and positioning method of three-component gradient measurement of magnetic fields inside wells for magnetic ores outside wells, which includes orienting magnetic ores outside wells and positioning ores. An adopted direction method of horizontal magnetic field gradient anomaly has the advantages of being not disturbed by ambient fields due to the inaccurate inclinometer of nonmagnetic principles, capable of positioning the magnetic ores outside wells omnibearingly; and not only suitable for positioning magnetic ores in the north-south direction of the drilling, but also capable of positioning magnetic ores in the east-west direction of the drilling; and solving the problem that the horizontal magnetic anomaly is incorrect due to the drift azimuth and magnetic ores in the east-west direction of the drilling cannot be positioned.
Owner:中色杰泰地球物理科技(北京)有限公司
See-through display device capable of ensuring an ambient field-of-view
InactiveCN105278104AAvoid accidentsEffective Beam Guidance ConstructionPrismsSee-through displayNatural state
There is provided a see-through display device capable of ensuring an ambient field-of-view. The see-through display device includes a display control board; a display element configured to emit image light according to an image signal generated in the display control board; a first prism that has an incident surface parallel to the display element, a tiled first emission surface and a second emission surface perpendicular to the incident surface; a partial reflection filter configured to reflect some image light emitted from the first prism and penetrate the remaining image light; and a second prism that has an incident surface having the same angle as the emission surface of the first prism, a curved reflection surface in which image light incident on the incident surface is reflected with positive power and guided to pupils of a user and an emission surface emitting image light to the pupils of the user.
Owner:GREEN OPTICS CO LTD
Power coupling device
Systems and methods to wirelessly transmit power are provided. A coil assembly is provided. In some examples, the coil assembly is configured to generate a signal in response to an ambient field, and to magnetically couple with a device to deliver power to the device.
Owner:EMPIRE TECH DEV LLC
A Numerical Weather Forecast Method Based on Mixed Background Field
ActiveCN106339568BHigh precisionSave computing resourcesForecastingNumerical weather predictionObservation data
The invention provides a numerical weather prediction method based on a mixed ambient field. According to the method, a mixed data ambient field of numerical weather prediction is generated based on the existing data of the relevant weather data and forecast data; initial parameters required in establishing a WRF mode are set to complete initial establishment of the WRF mode; effective meteorological data on feature level grid of the WRF mode is obtained; in the WRF mode, conclusion parameters of the numerical weather prediction is obtained by calculation according to the effective meteorological data; the conclusion parameters are extracted and processed to obtain conclusion data diagram of the numerical weather prediction. The present invention provides the mixed data using the reanalyzed data and the predicted background field as the background data for driving the meso-scale numerical weather prediction for numerical weather prediction; as the reanalyzed data itself assimilates a large number of observation data and the accuracy is high, which can significantly improve the accuracy of numerical weather prediction and save a lot of computing resources.
Owner:CHINA ELECTRIC POWER RES INST +4
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