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51results about How to "Improve data processing accuracy" patented technology
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Precinct laser fusion rapid molding method and device of medical implantation material wax mould
InactiveCN101310964ADense tissueSimplify the manufacturing processComputerised tomographsTomographyWaxOriginal data
The invention provides a method for laser-melting and fast forming of a choosing area of a medical implant moulage, which refers to measuring an organ of a patient to obtain the original data for a medical implant; three-dimensional CAD software is adopted to transform the original data into a three-dimensional CAD model for secondary processing and then for slicing processing so as to obtain a multi-layer-slice two-dimensional CAD data model of the medical implant; scanning path planning is carried out to the two-dimensional CAD data model of each slice to obtain scanning path data which is guided into a host computer of a choosing area laser-melting and fast forming device, and a layer-to-layer fast scanning method is adopted to carry out the choosing area laser-melting and fast forming to paraffin powder so as to prepare and obtain the medical implant moulage; the medical implant moulage is taken out to clear redundant paraffin power on the surface. The slicing processing of the invention does not relate to STL format data; the formed moulage has dense tissue, thus no more processing is needed after infiltration of the paraffin, small scale forming equipment can be realized, equipment producing cost can be reduced and forming time is shortened.
Owner:SOUTH CHINA UNIV OF TECH
Gravity anomaly data processing method applicable to strapdown marine gravimeter
ActiveCN106405670AAccurate comparison informationImprove data processing accuracyGravitational wave measurementGravity anomalyKalman filter
The invention relates to a gravity anomaly data processing method applicable to a strapdown marine gravimeter. According to the method, a kalman filter adopted, an attitude error in inertial navigation calculation is estimated, correction is performed on an attitude matrix and a vertical specific force component so as to acquire more accurate specific force information, then correction items of the gravity are calculated according to location, speed and height information provided by a PPP technology, and finally gravity anomaly information along the route is acquired through low-pass filtering. The gravity anomaly data processing method can be applied to data processing of the marine gravimeter, is high in disturbance resisting capacity, has high data processing precision, can act as a data processing method for gravity anomaly extraction of a high-precision marine gravimeter, and is particularly applicable to gravity anomaly extraction of a high-precision strapdown moving-base marine gravimeter.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Method and system for asynchronous lamp identification
InactiveUS20120170939A1Improve data processing accuracyElectroluminescent light sourcesElectric light circuit arrangementBase codePhase shifted
The invention relates to embedding data into a luminance output generated by an illumination system comprising a light source and a controller. The controller is configured to embed data by modulating a drive signal applied to the light source with an information signal comprising a shifted base code and a synchronization code. The synchronization code serves to provide synchronization for the receiver, while the shifted base code serves to carry the embedded data. A cyclic phase shift that is applied to a base code to generate the shifted base code corresponds to particular data, such as, for example, light source identification, that needs to be embedded into the luminance output of the illumination system. In this manner, data may be embedded into the luminance output generated by a light source without requiring synchronization of this light source with other light sources.
Owner:SIGNIFY HLDG BV +1
Method and system for asynchronous lamp identification
InactiveUS8737842B2Improve data processing accuracyElectroluminescent light sourcesElectric light circuit arrangementBase codePhase shifted
The invention relates to embedding data into a luminance output generated by an illumination system comprising a light source and a controller. The controller is configured to embed data by modulating a drive signal applied to the light source with an information signal comprising a shifted base code and a synchronization code. The synchronization code serves to provide synchronization for the receiver, while the shifted base code serves to carry the embedded data. A cyclic phase shift that is applied to a base code to generate the shifted base code corresponds to particular data, such as, for example, light source identification, that needs to be embedded into the luminance output of the illumination system. In this manner, data may be embedded into the luminance output generated by a light source without requiring synchronization of this light source with other light sources.
Owner:SIGNIFY HLDG BV +1
Online monitoring method and device for insulation of three-phase asynchronous alternating current motor stator
ActiveCN106841949AEasy to manufactureGuaranteed uptimeTesting dielectric strengthDynamo-electric machine testingMotor insulationAlternating current
The invention discloses an online monitoring method for insulation of a three-phase asynchronous alternating current motor stator. The online monitoring method comprises the following steps of synchronously collecting voltage and current signals of a motor insulation system; using a PWM (pulse width modulation) demodulation technique to process the collected voltage and current signals of the motor; extracting feature indexes of the processed signals, such as a MCSA (motor current signature analysis) feature index, a current signal statistical mode identification index, a sequence voltage distribution statistical index, a Park conversion feature index, a three-phase alternating current voltage difference statistical index and a three-phase alternating current difference statistical index; using each extracted index as a training set of a support vector machine to pre-diagnose the state, outputting the comprehensive state pre-diagnosis result of the motor insulation system, and evaluating the running state of the motor insulation system on line. The online monitoring method for the motor insulation system has the advantages that the motor insulation state can be effectively monitored for a long time; by integrating multiple types of insulation feature indexes, the reliability and monitoring precision of the method are improved, and the data processing precision is high.
Owner:HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
Dynamic precision assessment method based on movable base gravity meter
ActiveCN106443827AAccurate assessmentEffective assessmentGeological measurementsGravity anomalyEngineering
The invention relates to a dynamic precision assessment method based on a movable base gravity meter, and the method comprises the steps: enabling the movable base gravity meter to be installed on a specially designed test vehicle, and selecting a proper test road segment for reciprocating running measurement; and achieving the precise and effective assessment of inner coincidence precision of the movable base gravity meter through the comparison of multiple gravity abnormal values of the same road segment. Moreover, the method is simple, is easy to implement, is low in cost, and is high in efficiency. In addition, a processing method for gravity abnormality data is strong in anti-interference capability, is higher in data processing precision, and is especially suitable for the gravity abnormality extraction of a high-precision movable base gravity meter. The method can be used for assessing the inner coincidence measurement precision of the movable base gravity meter, and is suitable for the field running test of the movable base gravity meter.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Rolling bearing fault prognostics method and system based on logistic regression and J divergence
ActiveCN108181105AGood technical effectImprove accuracyMachine bearings testingSensing dataFeature extraction
The invention discloses a rolling bearing fault prognostics method based on logistic regression and J divergence. The method comprises the following steps: fault sensing data at different fault positions in the case of bearing operation and normal sensing data for bearing operation in a normal state are acquired, preprocessing and feature extraction are carried out on the fault sensing data and the normal sensing data respectively, and fault position feature samples and normal state feature samples are built; through the well-built fault position samples and the normal state samples, a logistic regression model is trained, logic model parameters are obtained, and a logistic regression model is built. Targeted fault diagnosis is carried out on the bearing according to the health decline degree of the bearing, parameters such as a training sample type, a feature value type and a health threshold are changed according to different working conditions and different objects, the trained model can be adjusted, and the method and the system have the advantages of strong real-time performance, high data processing precision, good robustness of a core algorithm, high state evaluation accurate, high diagnosis result accuracy and the like.
Owner:HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
Test method and system of suitability of soil heavy metal of agricultural regional plot of land
InactiveCN102590473AImprove test accuracyImprove data processing accuracyEarth material testingData setSoil heavy metals
The invention discloses a test method and system of suitability of soil heavy metal of an agricultural regional plot of land, belonging to the technical field of soil test. The method comprises the following steps of: S1, according to a random sampling way, selecting preset number of sampling nodes, obtaining the multivariate data of each sampling node, and recording the coordinate data of all sampling nodes; S2, respectively carrying out data processing for data of each attribute in the multivariate data to eliminate abnormal data; S3, respectively interpolating and fitting the data of each attribute to obtain a multi-index evaluation data set for representing an range of an agricultural regional plot of land to be tested; S4, and determining the soil pollution degree of the range of the agricultural regional plot of land to be tested according to the multi-index evaluation data set. The invention provides a data processing flow method relative to improving the reasonable test for soil heavy metal of the regional plot of land. The data quality can be effectively ensured, meanwhile the data processing accuracy is increased, and therefore the test accuracy of the heavy metal soil of the agricultural regional plot of land is increased.
Owner:CHINA AGRI UNIV
Method for determining container of single tooth
InactiveCN101944156AInnovative designReasonable designDentistrySpecial data processing applicationsIncisor toothTriangular facet
The invention discloses a method for determining a container model of a single tooth, in particular to a method for determining a container model based on tooth surface characteristics and a local three-dimensional right angle coordinate system, which mainly comprises the following steps: based on a segmentation tooth digital model, reflecting the curve degree at the peak by utilizing complex collection of a triangular facet and a discrete Gaussian curvature, collecting surface feature points of a single tooth; based on the surface feature points of the single tooth, establishing corresponding local three-dimensional right angle coordinates for incisor teeth, cuspid teeth, premolar teeth, and odontoprisis; and respectively establishing the container models of the incisor teeth, the premolar teeth, the odontoprisis and the cuspid teeth by using extreme values of the single tooth model under the three-dimensional right angle coordinate system. The invention has the advantages of novel and reasonable design, convenient implementation, high operating speed, high data processing accuracy and good implementation effect, can extract characteristic points of teeth and facilitate the operation on teeth, and can be used in the tooth correcting system.
Owner:XIAN UNIV OF SCI & TECH
Optimization method for sensor output data of ship comprehensive control system
ActiveCN102192736AHigh precisionImprove data processing accuracyNavigation instrumentsSatellite radio beaconingControl systemComputer science
The invention relates to an optimization method for sensor output data of a ship comprehensive control system. The method comprises the following steps: (1) an information comprehensive display unit receives the data output by a sensor; (2) the information comprehensive display unit performs validity processing on the received data; (3) the information comprehensive display unit performs rationality processing on the received data; (4) the information comprehensive display unit performs consistency processing on the received data; (5) the information comprehensive display unit performs uniform integration processing on the received position data; (6) the information comprehensive display unit performs Kalman filtering processing on the data processed in steps (1)-(5); and (7) the steps (1)-(6) are repeated to finish optimization of the sensor output data. The method provided by the invention is a data processing method, which has high precision and high working efficiency and conforms to the needs for safe sailing of modern ships with increased tonnage and speed.
Owner:TIANJIN NAVIGATION INSTR RES INST
PVC glove real-time detection system based on machine vision
PendingCN112198161AGuaranteed cleanlinessImprove data processing accuracyPreparing sample for investigationOptically investigating flaws/contaminationMachine visionVisual perception
The invention discloses a PVC glove real-time detection system based on machine vision. The PVC glove real-time detection system comprises a surface processing platform, a preliminary detection platform, a machine vision detection platform, a data processing module, a controller, a real-time early warning module and an early warning management module. Through cooperative use of an image acquisition module and a contact sensor, damage flaws of a glove can be detected in real time, pollution flaws on the surface of the glove can be detected, and meanwhile real-time interactive processing is achieved through the controller. According to the invention, the change trend of the processing information of a plurality of to-be-detected gloves detected by the data processing module within a preset time is graphically displayed; whether the corresponding processing equipment has a trend of producing unqualified to-be-detected gloves or not is determined according to the processing information ofthe plurality of to-be-detected gloves; the production parameters of the corresponding processing equipment are adjusted in time, and unqualified to-be-detected gloves are prevented from being produced; and the effect of increasing the production qualification rate in production is achieved.
Owner:安徽和佳医疗用品科技有限公司
Harmonic analysis method
ActiveCN105044459ANo additional costIncrease sampling dataSpectral/fourier analysisHigh densityHarmonic analysis
The invention discloses a harmonic analysis method. The harmonic analysis method comprises the steps that (1) continuous sampling is carried out on electrical signals with the period of T at fixed frequency f0 to acquire an original sampling array S, wherein the sampling time is M no less than 2T, and the original sampling array S comprises data of M / T periods; (2) a value in the original sampling array of S is interpolated into the same period T to acquire an array Sc; (3) a sampling value with the time closest to all FFT sampling time points is found out from the array Sc to acquire an array St; and (4) FFT fast Fourier transforming is used to calculate an St test result to acquire harmonic data. According to the harmonic analysis method provided by the invention, ADC frequency is not required, so that hardware cost is not increased; by adjusting the continuous sampling time of the electrical signals with the period of T, high-density sampling data can be acquired; the sampling effect same as improving sampling frequency is acquired; the sampling data are improved; and the data processing accuracy is accordingly improved.
Owner:青岛艾诺仪器有限公司
Method And Apparatus To Perform Native Distributed Analytics Using Metadata Encoded Decision Engine In Real Time
InactiveUS20160335542A1Easy to operateImprove translationMachine learningKnowledge representationModel parametersDecision taking
A system, method, and computer-readable medium are disclosed for performing distributed analytics using a metadata encoded decision engine. More specifically, the operation of performing distributed analytics combines metadata encoding of input expectations for models with a multi-tier decision engine. In certain embodiments, the multi-tier decision engine provides arbitrary responses to input failures, including data dropping, routing to additional models, signaling, data conditioning, and even updating of the model parameters themselves. The combination of the processing model, the data input validation, and the decision engine improves the operation of a distributed data processing environment which is focused on predictive and reactive analysis of edge processing data.
Owner:QUEST SOFTWARE INC
Distributed photovoltaic settlement method based on RPA financial robot
InactiveCN110110996AReduce labor costsImprove data processing accuracyFinanceResourcesPasswordOnline and offline
The invention discloses a distributed photovoltaic settlement method based on an RPA financial robot, and the method comprises the steps that the robot successfully logs in a distributed photovoltaicservice system according to a user name password provided by a user; according to the year and month of the electric charge provided by the user, the robot quickly exports to-be-settled data from thebusiness system by using the User Events technology, and performs backup by using the copy file technology; the robot checks the online and offline data through a macro, screens out inconsistent project information and generates an abstract; the robot modifies the online to-be-settled data according to the screened project difference and generates a certificate; and the robot records the voucher modification information and generates a report. In the distributed photovoltaic settlement, if the to-be-processed data size is large, the robot is used for processing the data, so that the labor costis reduced, and the data processing accuracy is improved.
Owner:JIANGSU ELECTRIC POWER CO +1
Wind profile radar signal processing method
ActiveCN102323574BReduce complexityLow costICT adaptationRadio wave reradiation/reflectionRadar signal processingFlight level
The invention discloses a wind profile radar signal processing method, which comprises the specific steps: (I) constructing a wind profile radar signal processing system comprising an industrial control computer (1), a digital intermediate-frequency receiver board (2), a system control module (3) and a signal processing module (4); (II) collecting a radar echo signal by the digital intermediate-frequency receiver board (2); (III) carrying out signal processing by the signal processing module (4); and (IV) carrying out spectrum data processing ,displaying and transmitting by the system control module (3) to obtain wind field echo signal power and a signal to noise ratio estimated value on a processed flight level, thereby, wind profile radar signal processing is realized. In the method, the data processing precision is high; the storage capacity is high; the complexity and the cost of hardware are reduced; the performance and the reliability of the system are improved; the expansion and the updating of a signal processing algorithm are convenient; the universality is strong; the product cost performance is high; and the requirement of product lot sizing is ensured.
Owner:航天新气象科技有限公司
Capacitor switching and monitoring system based on single chip microcomputer and configuration
InactiveCN1801568ASave bandwidthSmall voltage fluctuationReactive power adjustment/elimination/compensationReactive power compensationPower qualityTransformer
The capacitor switch monitor system based on SCM and configuration comprises: an up machine of IPC to provide visual menu for online modifying system parameter and displaying running state, and a down machine with high-performance SCM chip as control kernel and high-resolution A / D converter to improves precise and speed for data treatment. This invention realizes automatic fast switch to a plurality of capacitors reduces network loss, and improves power quality.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Data processing method and related equipment
PendingCN113505193AImprove data processing accuracyReduce overheadNeural architecturesInference methodsComputer scienceIndustrial engineering
The invention relates to the field of artificial intelligence, and discloses a data processing method, which comprises the steps of obtaining a transformer model comprising a target network layer and a target module, and processing data to be processed through the transformer model to obtain a data processing result; wherein the target module is used for performing target operation on the feature map output of the target network layer to obtain an operation result, and fusing the operation result with the feature map output to obtain updated feature map output. The target module is inserted into the transformer model, the operation result generated by the target module is fused with the input, the information carried in the feature map output by the target network layer in the transformer model is increased, and as parameter quantity of the target module and the computing power cost needed during operation are very small, namely, data processing precision of the model is improved on the premise of reducing the model parameter quantity and the computing power overhead.
Owner:HUAWEI TECH CO LTD
Target parameter processing method and system based on three-dimensional ultrasonic image
InactiveCN103315770AReduce workloadImprove data processing accuracyUltrasonic/sonic/infrasonic diagnosticsInfrasonic diagnosticsSonificationComputer science
The invention provides a target parameter processing method and system based on a three-dimensional ultrasonic image. The method comprises the following steps: to-be-processed three-dimensional ultrasonic body data is acquired; a reference axis of the three-dimensional ultrasonic body data is determined; the three-dimensional ultrasonic body data is partitioned according to the reference axis to acquire a plurality of two-dimensional outlines; triangle reconstruction is performed based on the two-dimensional outlines, so that the surface of the three-dimensional ultrasonic body is partitioned into a plurality of triangles; the target center spot of the three-dimensional ultrasonic body data is determined, and a plurality of triangular pyramids corresponding to the volume of the three-dimensional body are acquired according to the target center spot and the acquired triangles; the surface area of the three-dimensional ultrasonic body is calculated according to the triangles, and the volume of the three-dimensional ultrasonic body is calculated according to the triangular pyramids. The processing method performs the calculation of the target volume and surface area by utilizing the thought of triangle reconstruction and triangular pyramid reconstruction, and the precision of data processing is high.
Owner:VINNO TECH (SUZHOU) CO LTD
Vehicle strain weighing system
ActiveCN104501929AImprove anti-interference abilityImprove data processing accuracySpecial purpose weighing apparatusEngineeringData processing
The invention belongs to the technical field of vehicle weighing, and discloses a vehicle strain weighing system, for solving the technical problem of providing a strain weighing system which is quite high in weighing precision and quite high in reliability. The technical scheme employed by the invention is as follows: the vehicle strain weighing system comprises a weighing bench, a vehicle detection module, a control module, an equipment monitoring alarm module, a communication module, a management bench and an onsite display module. The control module comprises an A / D converter and a data processing module. The vehicle detection module and the equipment monitoring alarm module are both connected with the weighing bench, the control module is connected with the vehicle detection module, the communication module, the management bench and the onsite display module, and the management bench is also connected with the equipment monitoring alarm module. The vehicle strain weighing system is applied to the field of road traffic management.
Owner:STATE GRID CORP OF CHINA +1
Electricity distribution room's intelligent on-duty robot system and control method
PendingCN107065724AIncrease speedFast uploadProgramme controlComputer controlData displayRobotic systems
The invention provides an electricity distribution room's intelligent on-duty robot system and a control method, comprising an electricity distribution room's intelligent on-duty robot system which consists of at least one terminal layer, a communication layer in connection with the terminal layer and an interactive layer in connection with the communication layer. The terminal layer comprises an acquisition part arranged inside the electricity distribution room system. The invention further proposes a method, which comprises the following steps: 1) data acquiring; 2) data transmitting; and 3) data interacting. According to the invention, the transmitted data information is analyzed and diagnosed by a cloud server and a physical server and through a client terminal or the BS terminal or the App terminal arranged inside a mobile terminal, the data information is interacted wherein the BS terminal is responsible for the signaling interactions among users and the front end data and the electricity distribution room equipment to realize the operation control and management of the electricity distribution room equipment as well as the display of the positioning information data.
Owner:XIAN SI TOP ELECTRIC CO LTD
Insulin pump capable of automatically detecting drug loading amount and automatic detection method for drug loading amount
ActiveCN102233148BImplement automatic detectionAvoid errorsPressure infusionFlow monitorsNormal pancreasInsulin pump
The invention provides an insulin pump capable of automatically detecting the amount of medicine charged and a method for automatically detecting the amount of medicine charged. The insulin pump includes a casing, a control module, a DC servo motor, a drug delivery transmission assembly driven by the DC servo motor, and a cartridge for containing medicine. The drug delivery transmission assembly includes a screw rod and a push rod, which are used to convert the output torque of the DC servo motor into the axial torque of the push rod. In particular, a position switch is provided in the housing for detecting whether the cartridge entering the housing along with the push rod reaches a set position. The present invention realizes the automatic detection of the initial drug dosage of the drug cartridge, avoids the error caused by the visual inspection of the initial drug dosage in the prior art, improves the accuracy of data processing, and ensures that the insulin pump can control the regularity of normal pancreas secretion. Simulation effect.
Owner:江苏钜芯集成电路技术股份有限公司
Deep dragging type high-resolution multichannel seismic data fine processing method
ActiveCN114779340AHigh resolutionImprove signal-to-noise ratioWater resource assessmentSeismic signal processingReflected wavesSignal-to-noise ratio
The invention relates to the technical field of ocean geophysical exploration, in particular to a deep-towed high-resolution multichannel seismic data fine processing method, which comprises the following steps: placing a deep-towed seismic source and each detection point on a floating reference surface, acquiring floating reference surface correction values of multichannel seismic data, and performing floating reference surface correction on a CMP (chemical mechanical polishing) gather; performing dynamic correction on the CMP gather, obtaining residual time difference in the CMP gather after dynamic correction, and performing residual time difference correction on the CMP gather; calculating self-excitation and self-receiving time difference according to the travel time of the seabed reflected waves after the residual time difference correction in the CMP gather and the corresponding self-excitation and self-receiving time, and performing self-excitation and self-receiving time difference correction; performing non-consistency time difference correction on the CMP gather after self-excitation and self-receiving time difference correction by using a phase substitution method; and performing seabed smooth time difference correction on the stacked section after the non-consistency time difference correction. According to the method, various time differences can be fully eliminated, and high-resolution, high-signal-to-noise-ratio and high-fidelity imaging of the formation structure form below the seabed is achieved.
Owner:THE FIRST INST OF OCEANOGRAPHY SOA
Weather station based on 32-bit floating-point processor and working method thereof
PendingCN107065038AReduce calculation errorsImprove data processing accuracyProgramme controlTransmission systemsDsp processorReceiver
The invention relates to the technical field of meteorological monitoring, and more particularly to a weather station based on a 32-bit floating-point processor, mainly comprising a DSP processor unit, a weather collecting unit, a first level conversion module, a second level conversion module, a storage battery, a solar panel, a serial communication module, a wireless transmission module, an LED display and a host computer. The output end of the DSP processor unit is connected with the input end of the serial communication module and the input end of the wireless transmission module. The input end of the LED display is connected with the output end of the serial communication module. The output end of the wireless transmission module is connected with the DSP processor unit, and the receiver end is connected to the host computer. The weather station adopts the 32-bit floating-point processor as the control processing core of the system, reduces the calculation error in data processing, increases the precision of the data processing, simplifies the data calculation process, thus reduces the burden of the core processor, and makes the control system more secure and stable.
Owner:TIANJIN SINO GERMAN VOCATIONAL TECHNICAL COLLEGE
Thickness measuring system for inner wall anticorrosive coating of small diameter pipe
ActiveCN109506578AReduce data communication distanceReduce signal interferenceUsing electrical meansUsing optical meansHigh pressureHigh pressure gas
The invention discloses a thickness measuring system for an inner wall anticorrosive coating of a small diameter pipe. The system comprises a first measuring vehicle, a second measuring vehicle, a first signal processing vehicle, a second signal processing vehicle, third measuring vehicles, a power conversion vehicle, a battery vehicle and an electromagnetic positioning vehicle coaxially connectedin the small-diameter pipe from front to back, two adjacent vehicle bodies are connected by a hose, the electromagnetic positioning vehicle is provided with a mileage measuring mechanism at one end away from the battery vehicle, a flange is mounted on an input port of the small-diameter pipe, and a high-pressure gas pipe communicated with the small-diameter pipe is installed at one end of the flange away from the small-diameter pipe. The system has novel design, the signal processing vehicle is inserted between the three measuring vehicles, the signal transmission length and signal interference are reduced, the mileage measuring mechanism is used for recording the traveling mileage of a vehicle body, an external high-pressure gas source is used for pushing the I-shaped vehicle body, the power consumption of the vehicle body itself to install a driving device is reduced, and the duration of a battery car is prolonged.
Owner:TECHN MONITORING CENT OF CHANGQING PETROLEUM EXPLORATION BUREAU
Motor coordinate transformation control method and system
InactiveCN103684172AImprove stabilityFast operationElectronic commutation motor controlVector control systemsMicrocomputerMicrocontroller
The invention discloses a motor coordinate transformation control method and system. The method includes: when k and a function value corresponding to each other are stored in a single-chip microcomputer of the control system, a current phase angle theta1 of a motor rotor is determined, k is a number of corresponding parts of the phase angle theta of the motor rotor, and a 360-degree angle is divided into 2n equal parts; when accuracy of each part is radian, the function value is equal to sin theta increased by 2m times, k is a consecutive integer larger than or equal to 0, n and m are both integers larger than 1; the number k1 of corresponding parts of the theta1 is calculated; according to the k1, a first function value corresponding to the k1 in the single-chip microcomputer is queried; the first function value is diminished by 2m times to obtain the value of sin theta1, and motor control parameters are calculated.
Owner:SICHUAN CHANGHONG ELECTRIC CO LTD
Method and system for aided driving of excavator, equipment and storage medium
PendingCN113240733AReduce the difficulty of operationEasy to operateImage enhancementImage analysisDriver/operatorSimulation
The invention can provide a Method and system for aided driving of excavator, equipment and a storage mediumand the method comprises the steps: obtaining a real-time image in a video shot by a first camera on the excavator, and carrying out target recognition of the real-time image, so as to extract the position information of an excavator bucket of the excavator; determining bucket depth information according to the bucket position information; searching a pixel region matching the bucket depth information from the real-time image. and marking a pixel area on the real-time image in the video so as to form the projection of the excavator bucket on the ground in the real-time image. A reference object can be provided for a driver by marking the shot real-time image, so that the excavator driver is assisted to more accurately judge the distance of the ground, the driving operation difficulty of the excavator is reduced, the dependence on the operation experience and the working state of the driver is reduced. And the problems of misoperation of the driver and the like caused by the fact that the ground distance cannot be distinguished are fundamentally solved.
Owner:北京拓疆者智能科技有限公司
Method for determining container of single tooth
InactiveCN101944156BInnovative designReasonable designDentistrySpecial data processing applicationsCuspid toothComputer science
Owner:XIAN UNIV OF SCI & TECH
Multi-phase image arbitrary reflector velocity interferometer data processing method
PendingCN114119596AImprove data processing accuracyImprove processing precisionImage analysisComplex mathematical operationsComputational physicsShock wave
The invention provides a multi-phase image arbitrary reflector velocity interferometer data processing method, which is characterized by comprising the following steps: S1, processing a single original image to obtain a plurality of multi-phase images; s2, performing phase solving by using the multi-phase image; s3, phase unwrapping is carried out, and the shock wave velocity is obtained through calculation; wherein the step S2 is carried out according to the following steps: S21, calculating to obtain the phase distribution of the original image; s22, solving a phase error so as to solve a phase; s23, judging whether the phase distribution is correct or not by utilizing a probability density function; by adopting the method, through curve comparison before and after probability density function processing, the uniformity of phase distribution is obviously improved by using the method; compared with a traditional data processing method, a point-to-point phase calculation method is adopted, spatial resolution of data processing is effectively improved, influences of phase errors are compensated in the processing process, and therefore data processing errors are effectively reduced.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
A detection method for passive resistance of electronic equipment
ActiveCN105866544BGuaranteed measurement accuracyImprove detection accuracyResistance/reactance/impedenceElectrical resistance and conductanceCurve fitting
The invention discloses a detection method of the passive resistance of an electronic device. According to the detection method, a reasonable tap position of an adjustable resistor is selected according to the theoretical range of testing resistance; collection and measurement are carried out at fixed time points; when resistance in different range intervals is measured, the adjustable resistor is switched to a different tap position; a direct-current alternating measurement method is adopted to further improve the accuracy of the resistance according to the selected tap position; and finally, with two methods mentioned in descriptions of the invention used in combination, the resistance value of the electronic device is calculated through adopting a curve fitting method. With the detection method provided by the technical schemes of the invention adopted, measurement accuracy and precision can be ensured. The detection method has a high engineering application value.
Owner:BEIJING INST OF ELECTRONICS SYST ENG
Detection method of passive resistance of electronic device
ActiveCN105866544AGuaranteed measurement accuracyImprove detection accuracyResistance/reactance/impedenceElectrical resistance and conductanceCurve fitting
The invention discloses a detection method of the passive resistance of an electronic device. According to the detection method, a reasonable tap position of an adjustable resistor is selected according to the theoretical range of testing resistance; collection and measurement are carried out at fixed time points; when resistance in different range intervals is measured, the adjustable resistor is switched to a different tap position; a direct-current alternating measurement method is adopted to further improve the accuracy of the resistance according to the selected tap position; and finally, with two methods mentioned in descriptions of the invention used in combination, the resistance value of the electronic device is calculated through adopting a curve fitting method. With the detection method provided by the technical schemes of the invention adopted, measurement accuracy and precision can be ensured. The detection method has a high engineering application value.
Owner:BEIJING INST OF ELECTRONICS SYST ENG
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