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28results about How to "Realize Calibration" patented technology
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Information data management system for vehicle calibration
ActiveCN119600110ARealize CalibrationImage enhancementWave based measurement systemsComputer visionMillimetre wave
The invention relates to the technical field of vehicle calibration, in particular to an information data management system for vehicle calibration. A measurement noise covariance matrix is optimized by fusing data acquired by a visual sensor and a millimeter wave radar and introducing the size, the volume and the dispersity of an obstacle as well as the illumination condition and the shielding condition in image data, so that the position of the obstacle is determined, and the sensor calibration deviation is judged in a real-time environment; when calibration is needed, angular points in the image data are extracted through an angular point detection algorithm, extraction of feature points in the image data is accurately optimized by introducing the angular points, and calibration of the visual sensor and the millimeter-wave radar is achieved by combining distance and angle information measured by the millimeter-wave radar.
Owner:ZHEJIANG YOUSHUN MASCH CO LTD
Calibration method and device for detection equipment
ActiveCN119595038AEnsure consistencyavoid production wasteWeighing apparatus testing/calibrationComplex mathematical operationsProcess engineeringCalibration result
The invention discloses a calibration method and device for detection equipment. The calibration method specifically comprises the following steps: acquiring actual data of a target product and product detection data measured by the detection equipment; performing mapping processing on the product detection data based on the reference measurement sheet calibration model, and giving initial product calibration data; giving calibration product calibration data in combination with the initial product calibration data and the primary product calibration model; and completing calibration of the detection equipment according to the actual data of the target product and the calibration data of the calibration product. According to the calibration scheme of the detection equipment provided by the invention, the correlation between the reference measuring sheet and the target product is established, so that the production waste of production materials during product calibration is avoided, and green calibration is realized. Meanwhile, correlation among the multiple detection devices is given, the consistency of calibration results of the multiple detection devices is guaranteed, and the calibration efficiency is improved.
Owner:ZHEJIANG SHUANGYUAN TECH CO LTD
Laser radar calibration method, electronic equipment and medium
PendingCN119644307ARealize CalibrationImprove efficiencyWave based measurement systemsIn vehicleEngineering
The invention discloses a laser radar calibration method, electronic equipment and a medium, and relates to the field of laser radar calibration. In the laser radar calibration device comprising a controller and a reflecting plate, a second position of a target point in a vehicle body coordinate system is determined according to the position of the target point in a laser radar coordinate system and current data (including position data and direction data), and then the position of the target point in the vehicle body coordinate system is calibrated according to the relation between the first position and the second position. The current data is adjusted according to the condition of the second position, and calibration of the laser radar is achieved; the internal and external parameters of the camera and the environment illumination condition do not need to be considered, the complexity of the calibration process is relatively reduced, the calibration efficiency of the laser radar is improved, and the calibration of the vehicle-mounted laser radar can be completed on a vehicle without the camera; moreover, the position condition of the target point on the reflector is analyzed, so that the position of the target point can be quickly and accurately identified according to the light intensity information, and the calibration efficiency is further improved.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
Calibration method and device of mobile equipment, equipment and storage medium
PendingCN119575322ARealize Calibrationimprove accuracyWave based measurement systemsImage analysisMobile deviceRemote sensing
The invention relates to a calibration method and device of mobile equipment, equipment and a storage medium, and belongs to the technical field of automatic guide trolleys, the orientation of a radar is parallel to the moving direction of the mobile equipment, and the method comprises the following steps: controlling the mobile equipment to move to a first set position; detecting a first identifier around the first set position through a radar to obtain radar calibration data; obtaining a conversion relation between a radar coordinate system of the mobile equipment and a vehicle body coordinate system of the mobile equipment according to the radar calibration data; wherein the conversion relation is used for the mobile device to convert the first position, output by the radar, in the radar coordinate system into the second position in the vehicle body coordinate system.
Owner:GUANGDONG LEAD INTELLIGENT LOGISTICS TECH CO LTD
Tool for calibrating toothed rail meshing force and calibration method thereof
The invention relates to the technical field of toothed rail detection, in particular to a tool for calibrating the meshing force of a toothed rail and a calibration method of the tool. The tool for calibrating the meshing force of the toothed rail comprises a loading module. The loading module is provided with a tooth groove, the tooth groove is provided with a first supporting part and a second supporting part, the first supporting part is used for being in contact with the upper tooth surface of the gear tooth, the second supporting part is used for being in contact with the side tooth surface of the gear tooth, the first supporting part and the second supporting part are both in a long strip shape, and the first supporting part and the second supporting part are both parallel to the extension direction of the tooth groove. The loading module is installed on the gear teeth, the loading module is matched with the tension component and the jacking component, a proper moment center is selected to establish a moment balance equation, the meshing force of the gear teeth can be calculated only by measuring a small amount of data, calibration of the meshing force of the gear teeth can be achieved by using the meshing force of the gear teeth in cooperation with other measurement modes, and the calibration precision of the meshing force of the gear teeth is improved. Therefore, the problem that a tool for calibrating the meshing force of the toothed rail is lacked in the current market is solved.
Owner:SOUTHWEST JIAOTONG UNIV
A device residual life adaptive prediction method fusing multi-source data
The application provides a kind of equipment residual life adaptive prediction method of fusion multi-source data, it is related to equipment residual life prediction technical field, specific steps include: obtaining the equipment operating data and corresponding environmental parameters under different working conditions, construct the first data set;Each source feature vector is constructed, uniform dimension mapping is executed, global degradation reference construction and deviation representation processing between sources are carried out, and life sensitive source sequence is obtained;Degradation stage feature is constructed and stage difference representation processing is carried out, and stage memory sequence is obtained;Life reduction feature is constructed and degradation consumption representation processing is carried out, and basic residual life reduction sequence is obtained;Working condition deviation feature is constructed according to basic residual life reduction sequence, life sensitive source sequence end time feature and stage memory sequence end time feature, and residual life correction quantity is generated;The equipment residual life prediction result is obtained according to basic residual life reduction sequence and residual life correction quantity.
Owner:BEIJING YUHANG INTELLIGENT TECH CO LTD
Calibration method, device, electronic device, and storage medium for autonomous driving vehicle
ActiveCN114723819BRealize CalibrationImage analysisSatellite radio beaconingAcquisition apparatusEngineering
The present application discloses a calibration method, device, electronic device, and storage medium for an autonomous driving vehicle. The autonomous driving vehicle at least includes: an RTK positioning device and an image acquisition device, and realizes the calibration of the relative position of the RTK positioning device and the image acquisition device in the horizontal direction perpendicular to the vehicle body. Through the present application, the calculation result of the lane line is accurate, and the relative position calibration result of the RTK positioning device and the image acquisition device is obtained.
Owner:ZHIDAO NETWORK TECH (BEIJING) CO LTD
C-arm machine calibration method and device
ActiveCN114693769BRealize Calibrationimprove accuracyImage analysisComputer-aided planning/modelling
The embodiment of the present application provides a calibration method and device for a C-arm machine, the method comprising: obtaining an augmented image of a calibration plate in multiple postures, the calibration plate comprising multiple calibration balls, the multiple calibration balls comprising a positioning ball for coordinate positioning; based on the positioning balls among the multiple calibration balls, determining the pixel coordinates and world coordinates of the target calibration ball in each augmented image; based on the pixel coordinates and world coordinates of the target calibration ball in each augmented image, determining the external parameter matrix, the internal parameter matrix and the distortion parameters of the C-arm machine. Applying the solution provided by the embodiment of the present application can expand the application scope of C-arm machine calibration and improve the accuracy of C-arm machine calibration.
Owner:HANGZHOU SANTAN MEDICAL TECH
Tube bundle type heat exchanger, heat exchange performance calibration method of tube bundle type heat exchanger and thermoacoustic engine
ActiveCN119617942AImprove heat exchange performanceMeasure heat exchange efficiencyRecuperative heat exchangersHeat storage plantsThermoacousticsFlue gas
The invention relates to the technical field of heat exchange equipment, and provides a tube bundle type heat exchanger, a heat exchange performance calibration method thereof and a thermo-acoustic engine. The tube bundle type heat exchanger comprises a shell, a heating piece and a tube bundle, the shell comprises a heat exchange cavity and a working cavity, the heat exchange cavity and the working cavity are arranged at an interval, and liquid metal is arranged in the heat exchange cavity; the heating piece penetrates through the heat exchange cavity and is used for heating the liquid metal; the tube bundle penetrates through the heat exchange cavity and is spaced from the heating piece, openings in the two ends of the tube bundle communicate with the working cavity, and the tube bundle is used for conveying working gas. According to the tube bundle type heat exchanger, a uniform temperature field is formed through the combination of the heating piece and the liquid metal, the power of the heating piece can be directly used as reference data for measuring the heat exchange performance of the tube bundle type heat exchanger, and heat sources such as high-temperature flames and high-temperature flue gas do not participate in the heat exchange process of the tube bundle type heat exchanger; in other words, complex radiation and convective heat exchange modes do not exist, and the difficulty of accurate evaluation of the performance of the heat exchanger is effectively reduced.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +2
A sample structure and its manufacturing method, and incident space angle calibration method
The present application provides a sample structure and a method for making it, and a method for calibrating the spatial angle of incidence, wherein the sample structure includes a substrate, a metal film located on the substrate, and a nanostructure located inside or on the metal film. The sample structure is simple, and the manufacturing method is simple, but the near-field light field distribution generated under the irradiation of oblique incident light can be detected by SNOM, and has a good response to the spatial angle of incident light, and can be used for SNOM near-field light field imaging, and then the spatial angle component of the incident light is inferred from the measurement results of the SNOM near-field light field imaging, thereby realizing the calibration of the spatial angle of the incident light of the SNOM device. The calibration method is simple and easy, and the sample structure preparation process is simple. It can be used as a standard sample to calibrate the spatial angle of incident light of scattered scanning near-field optical microscopes of different manufacturers or laboratories. It has a wide range of applications and can be mass-produced.
Owner:UNIV OF SCI & TECH OF CHINA
Steel wire rope nondestructive detector
ActiveCN224137288URealize automatic clampingRealize deliveryMaterial analysisQuantitative accuracySteel bar
The utility model discloses a steel wire rope nondestructive detector, which relates to the technical field of steel wire rope detection and comprises a displacement adjusting mechanism, a clamping and conveying mechanism, a placing groove, a placing seat, a clamping groove seat, a clamping groove, a sheath, a baffle plate and a steel bar group sample, the steel bar group sample clamping and conveying device is reasonable and simple in structure, low in production cost, convenient to install and complete in function, through cooperative operation of the clamping and conveying mechanism and the conveying mechanism, automatic clamping and conveying of a steel bar group sample for testing can be achieved, use convenience is improved, and the steel bar group sample is protected and limited through the protective sleeve; according to the utility model, different steel bars can be inserted to respectively test the continuous broken wire signal resolution, the LF detection sensitivity and the LMA quantitative accuracy of the steel wire rope nondestructive detector, so that the performance of the detector is comprehensively detected; the displacement adjusting mechanism is adopted to control the detector probe to move, magnetization and calibration of a steel bar group sample can be achieved, operation is easy and convenient, and the detection result is visual and reliable.
Owner:NANTONG PROD QUALITY SUPERVISION & INSPECTION INST
Three-point contact ball bearing axial stress calibration device and calibration method
ActiveCN121994485AEnables direct measurementRealize CalibrationMachine bearings testingApparatus for force/torque/work measurementBall bearingClassical mechanics
The invention relates to a three-point contact ball bearing axial stress calibration device and calibration method, and belongs to the technical field of bearing test.The three-point contact ball bearing axial stress calibration device comprises a control unit, a shell and a main shaft arranged in the shell, the main shaft is sleeved with a first three-point contact ball bearing and a second three-point contact ball bearing, and the outer side of the main shaft is further sleeved with an intermediate bearing assembly; a radial loading device is also arranged in the shell; a thrust sleeve in sliding fit with the shell is arranged on the outer side of the first three-point contact ball bearing, the second three-point contact ball bearing is in sliding fit with the shell, a transition sleeve abutting against the second three-point contact ball bearing is arranged in the shell in a sliding mode, an axial loading device is arranged on the outer side of the shell, and a first pressure sensor is arranged between the axial loading device and the thrust sleeve. A limiting piece is further arranged on the outer side of the shell, and a second pressure sensor is arranged between the transition sleeve and the limiting piece. According to the invention, direct measurement and calibration of the axial force transmitted to the far-end three-point contact ball bearing in a multi-bearing series connection structure can be realized.
Owner:LUOYANG LYC BEARING
Calibration method, device and laser processing equipment
PendingCN122530326ARealize CalibrationSolve the problem of difficulty in completing high-precision calibration
The application relates to the technical field of laser processing, and discloses a calibration method and device and laser processing equipment. The method comprises the following steps: printing a calibration pattern on a calibration consumable; acquiring an image of the calibration pattern printed on the calibration consumable, and determining pixel coordinate data of the calibration pattern in the image; acquiring field lens information and laser module information, selecting a preset mapping relationship matched with the field lens information and the laser module information, and calibrating the pixel coordinate data according to the preset mapping relationship; determining an actual mapping relationship between physical coordinate data of the calibration pattern and the pixel coordinate data according to the calibrated pixel coordinate data and the physical coordinate data of the calibration pattern; and calculating a center offset, and associating and storing the center offset, the field lens information, the laser module information and the actual mapping relationship. The user end can calibrate the laser module by itself.
Owner:SHENZHEN CREALITY ECOSYSTEM TECHNOLOGY CO LTD
Calibration board, calibration component, calibration device, calibration system and calibration method
PendingCN119535375AImprove work efficiencyImprove Calibration AccuracyImage enhancementWave based measurement systemsComputer hardwareAlgorithm
The invention provides a calibration board, a calibration component, a calibration device, a calibration system, a calibration method, a calibration system, electronic equipment and a nonvolatile readable storage medium. The calibration plate comprises a calibration carrier plate, a plurality of identification codes and a metal block; the metal block is fixed at the center of the calibration carrier plate, and the plurality of mark codes are fixed on the calibration carrier plate and surround the metal block; the identification codes carry two-dimensional code information which can be identified by the sensor, and identity information corresponding to the two-dimensional code information of all the identification codes is different. Since the two-dimensional code information on the plurality of identification codes corresponds to different identity information, the ID of the metal block can be quickly identified according to the identity information, confusion caused by over-high similarity between different metal blocks is avoided, the problem that the calibration plate is inaccurately identified by using the edge information of the calibration plate in the prior art is avoided, and the calibration precision of the vehicle sensor is improved.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
A combined device and method for rapid on-site calibration of a multi-dimensional force sensor
ActiveCN119245925BRealize the loadRealize CalibrationForce/torque/work measurement apparatus calibration/testingControl engineeringIndustrial robotics
The present invention provides a combined device and method for on-site rapid calibration of a multi-dimensional force sensor. The device includes a workbench and a top plate. A connecting assembly is provided on the top of the workbench and the bottom of the top plate. The connecting assembly is connected to a standard force sensor. The standard force sensor is connected to a steel wire rope. The two steel wire ropes are commonly connected to a loading assembly. When the end of the industrial robot under test moves along the X-axis or Y-axis direction or the end of the industrial robot under test rotates, there is an angle between the loaded steel wire rope and the steel wire rope before loading. The device also includes an angle recognition assembly. The loading and calibration of the multi-dimensional force sensor of the industrial robot under test is achieved through the movement of the end of the industrial robot under test. Compared with the existing multi-dimensional force sensor calibration device, the device of the present invention does not need to remove the multi-dimensional force sensor from the industrial robot under test, thereby avoiding the introduction of artificial installation errors. In addition, the calibration work of the multi-dimensional force sensor is simplified, reducing the impact on industrial production.
Owner:CHANGZHOU RIGHT MEASUREMENT & CONTROL SYST CO LTD
Radiation type high temperature thin film heat flow meter dynamic and static integrated calibration device and method
The application discloses a radiation type high-temperature thin-film heat flow meter dynamic-static integrated calibration device and method, relates to the technical field of aviation and thermophysics, and the device is characterized in that: a radiation system is used for providing a stable radiation energy source and adjusting and converging light source radiation energy; a receiving system is used for measuring and recording heat flow density; adjacent radiation systems and receiving systems are arranged on a support system; a cooling system is used for providing cooling for the radiation systems and the receiving system; a data acquisition system is responsible for collecting and processing data from the radiation systems, the receiving systems, the cooling system and a dynamic test system; the dynamic test system is arranged at an outlet of the radiation system and is used for converting a direct-current heat flow signal output by the radiation system into a square wave heat flow signal; and the data acquisition system is used for collecting and processing data from the radiation systems, the receiving systems, the cooling system and the dynamic test system, so that the application can meet the demand for high-temperature and high-heat flow calibration of an aero-engine thin-film heat flow meter.
Owner:BEIHANG UNIV
Vehicle-mounted camera calibration method and device, terminal equipment and computer program product
PendingCN121861131ARealize CalibrationImprove calibration efficiencyImage enhancementImage analysisPoint cloudComputer graphics (images)
The invention relates to a vehicle-mounted camera calibration method and apparatus, a terminal device and a computer program product. The method comprises the steps of obtaining three-dimensional point cloud data obtained by performing three-dimensional scanning on a target vehicle by an electronic device; constructing a three-dimensional model and a vehicle coordinate system of the target vehicle based on the three-dimensional point cloud data; obtaining a first video stream obtained by shooting the target vehicle by the electronic equipment and a second video stream collected by a plurality of vehicle-mounted cameras; based on the first video stream and the three-dimensional model, determining a target pose stream of the target vehicle in a world coordinate system; based on the target pose stream, the first video stream and the second video stream, determining a first shooting parameter of each vehicle-mounted camera in a vehicle coordinate system; and performing bundle adjustment optimization on the first camera parameter of each vehicle-mounted camera to obtain a second camera parameter of each vehicle-mounted camera in the vehicle coordinate system. According to the method and the device, the problem of relatively low efficiency of calibrating the vehicle-mounted multi-path camera system by depending on a physical target in related technologies is solved.
Owner:SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD +2
Camera calibration method and device, storage medium and electronic equipment
PendingCN119559260ARealize CalibrationImage enhancementImage analysisComputer graphics (images)Image calibration
The invention discloses a camera calibration method and device, a storage medium and electronic equipment. The method comprises the steps that calibration images of a calibration plate are collected from different angles through a zoom camera at different calibration distances away from the calibration plate with code values corresponding to the calibration distances, and the calibration plate comprises a plurality of patterns; feature points are extracted from the calibration image corresponding to each calibration distance, and the features of the calibration pattern corresponding to at least part of the feature points corresponding to the farthest calibration distance are different from the features of the calibration pattern corresponding to at least part of the feature points corresponding to the nearest calibration distance; and determining an internal reference of the zoom camera corresponding to each calibration distance based on the feature points. According to the invention, the zoom camera can be calibrated.
Owner:GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
Data processing method, data processing device and calibration system
ActiveCN116266367Bimprove accuracyRealize CalibrationImage enhancementImage analysisComputer graphics (images)Radiology
The application relates to a data processing method, a data processing device and a calibration system, wherein the data processing method comprises the following steps: acquiring a plurality of groups of first reference coordinate points of a calibration board in a first camera coordinate system corresponding to a plurality of groups of poses, and a plurality of groups of second reference coordinate points of the calibration board in a second camera coordinate system corresponding to a plurality of groups of poses; acquiring position information of a to-be-calibrated object in the second camera coordinate system corresponding to a plurality of groups of different poses of a second camera; determining a conversion relationship between the first camera coordinate system and the second camera coordinate system according to the first reference coordinate points and the second reference coordinate points; and obtaining position information of the to-be-calibrated object in the first camera coordinate system according to the conversion relationship and the position information, so that the accurate solution of the position coordinates of an object outside the camera field of view is realized by using a plurality of cameras, and the calibration of the spatial position of the object outside the camera field of view is realized, and the accuracy of the calibration result is improved.
Owner:SUNNY OPTICAL ZHEJIANG RES INST CO LTD
Thermal infrared sensor calibration method and device, electronic equipment and storage medium
ActiveCN119915388BAccurate CalibrationRealize CalibrationImage enhancementRadiation pyrometryContrast enhancementImage pair
The application provides a kind of thermal infrared sensor calibration method, device, electronic equipment and storage medium, it is related to sensor calibration technical field, the method comprises: the original image is input into segmentation model, obtains the binary image corresponding to original image of segmentation model output, original image is the thermal infrared image of the calibration board collected by the to-be-calibrated thermal infrared sensor, image reconstruction is carried out on the binary image, obtains the contrast enhancement image corresponding to original image, the visual features of the corner point of the checkerboard pattern in the contrast enhancement image are enhanced, obtain the feature enhancement image corresponding to original image, the corner point of the checkerboard pattern in the feature enhancement image is identified, based on the position information of the identified corner point, the internal and external parameter values of the to-be-calibrated thermal infrared sensor are obtained.The application can more accurately and efficiently realize the calibration of thermal infrared sensor, can improve the robustness of thermal infrared sensor calibration, and can realize the calibration of thermal infrared sensor in complex scene.
Owner:BEIJING RES CENT FOR INFORMATION TECH & AGRI
Test apparatus for sensor, test method for sensor, and storage medium
This invention relates to a sensor testing device, a testing method, and a storage medium. The testing device includes: an identification unit for identifying the sensor type of the sensor under test and generating a sensor type signal; a control unit for receiving and generating a calibration transmission signal based on the sensor type signal; a carrying unit including multiple test areas corresponding to various sensor types; a transmission unit for transmitting the sensor under test to a first target test area corresponding to the calibration transmission signal among the multiple test areas; and a setting unit for acquiring and providing multiple different target test parameters to the sensor under test located in the first target test area according to a setting signal. The control unit acquires characteristic data signals of the sensor under test located in the first target test area under each target test parameter and calibrates the sensor under test based on each target test parameter and each characteristic data signal. This improves the reusability of the testing device.
Owner:CSMC TECH FAB2 CO LTD
A device for detecting hydrogen content in solid metal
ActiveCN111751247Breduce distractionsImprove test efficiencyMaterial analysisChemical physicsPhysical chemistry
The invention relates to a device for detecting hydrogen content in solid metal, which mainly comprises: a hydrogen evolution chamber, a gas supply device, a signal acquisition unit and a control processing system. The invention adopts a high-temperature hydrogen sensor which can be directly used at high temperature as a hydrogen detection element, so that the precipitation and detection of hydrogen in the solid metal are carried out synchronously, and it is not necessary to collect the precipitated hydrogen before performing hydrogen content detection, so that the device is more portable and simple; and a structural form in which a cylinder branch is provided on a cylinder, a sample pre-discharge area and a heating area are arranged for the hydrogen evolution chamber, and a metal sample to be detected is temporarily placed in the sample pre-discharge area before heating and hydrogen evolution to be fully purged by a carrier gas, so that the interference of gas adsorbed on the surface of the sample on the hydrogen content detection result can be greatly reduced; and a cooling element can quickly cool the hydrogen evolution chamber, accelerate the sample analysis time, and improve the test efficiency.
Owner:GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST +1
Calibration device and calibration method for hinged rod type displacement sensor
ActiveCN119555024ARealize CalibrationHigh measurement accuracyHeight/levelling measurementMechanical measuring arrangementsControl engineeringControl theory
Owner:TONGJI UNIV
Binocular vision sensor calibration method, device, computer equipment and storage medium
The present application relates to a binocular vision sensor calibration method, device, computer equipment and storage medium. The method comprises: obtaining each cross laser line image group obtained by the binocular vision sensor to be calibrated under different shooting conditions, including a left cross laser line image and a right cross laser line image; determining the left image intersection point of the cross laser line in the left cross laser line image, and determining the right image intersection point of the cross laser line in the right cross laser line image; obtaining the feature point matching pair corresponding to the cross laser line image group according to the left image intersection point and the right image intersection point; determining the position mapping matrix between the left cross laser line image and the right cross laser line image according to each feature point matching pair and the internal parameters of the binocular vision sensor; decomposing the position mapping matrix to obtain the external parameters of the binocular vision sensor, and the calibration result of the binocular vision sensor includes the external parameters. The use of this method can improve the calibration efficiency.
Owner:CHANGSHA INTELLIGENT DRIVING INST CORP LTD