27 results about "Scale measurement" patented technology

The invention provides a weight metering data acquisition and traceability management method and system based on the Internet of Things, and relates to the technical field of the Internet of Things, and the method comprises the steps: implanting an RFID electronic tag in a weight, collecting environment parameters and weight data, building a mapping relation between the environment parameters and the weight of the weight through combining with a deep learning algorithm, and carrying out the traceability management of the weight. And multi-dimensional environment compensation and thermal expansion coefficient correction are carried out, and a self-adaptive traceability chain structure is constructed by using a block chain technology, so that safe storage and whole-process traceability of measurement data are realized. According to the invention, the accuracy of weight metering is improved, credible traceability of metering data is realized, and the safety of the metering process is guaranteed.

The present invention provides a method for compensating the measurement error of a grating scale, comprising the following steps: S1: constructing an initial error compensation model and a multi-dimensional bounded optimization model; S2: extracting a sub-pixel track positioning map from the input grating image by a sub-pixel level positioning network; S3: constructing a regression tree in the task space according to the sub-pixel track positioning map, outputting a regression result associated with each interference factor and migrating the regression result to the multi-dimensional bounded optimization model; S4: feeding back compensation conditions to the sub-pixel level positioning network by the multi-dimensional bounded optimization model according to the regression result; S5: extracting a new sub-pixel track positioning map by the sub-pixel level positioning network according to the compensation conditions and inputting the new sub-pixel track positioning map into a decoding layer, and outputting a decoding result as an accurate measurement result, thereby completing the compensation of the measurement error of the grating scale. The present invention provides a method for compensating the measurement error of a grating scale, which solves the problem that the measurement accuracy of the grating scale is often affected by various error factors.

A method, apparatus, and computer program product are provided. In the context of a method, the method determines that at least partial skipping of at least one measurement occasion of a measurement period is enabled. The method, in an instance in which at least partial skipping of at least one measurement occasion of the measurement period is enabled, determines a scaling factor associated with the measurement period. The method scales the measurement period such that the measurement period is extended based on the scaling factor. The method obtains one or more radio resource management measurements during one or more measurement occasions within the measurement period, as extended.

The utility model discloses a measuring tool for drawing design, which relates to the technical field of mechanical drawing and comprises a measuring scale, an open hole is arranged in the measuring scale, a pointer for displaying a measuring result is arranged on a ruler scale which is arranged on the surface of the measuring scale, and an inspection mechanism for inspecting whether a drawing is flat or not is arranged at the measuring position of the measuring scale. An adjusting structure for adjusting the pointer is arranged in the measuring scale, whether the second laser has deviation or not is judged by starting the second laser and the third laser, whether a drawing is flat or not is judged by observing rays emitted by the second laser, and errors of a measuring result caused by uneven surface of the drawing are avoided. Rays of the first laser and the fourth laser are tangent to the circular pattern, the measuring end of the measuring scale is adjusted to be tangent to the circular pattern, the size of the circular pattern can be directly obtained, the measurement application range is increased, a measurement result is obtained by observing the position of the pointer on the scale, and errors of the observation result caused by light refraction are avoided.

The stage posture estimation device (18) has an input data acquisition section (91) and a posture estimation section (92) that estimates a deflection angle of the stage based on input data. Thus, the deflection angle of the stage can be estimated without always providing a large-scale measurement device. In addition, the posture estimation section 92 determines one estimation result (θr) based on a plurality of temporary estimation values (θ1, θ2, θ3,...) output by a plurality of learned models (M1, M2, M3,...). Thus, high estimation accuracy can be achieved in a variety of motion conditions of the conveyance device.

The invention discloses a non-contact body size measurement method and device based on three-view point cloud rapid registration, and the method comprises the steps: carrying out the feature extraction operation of a three-view initial point cloud pair through a feature extraction network and a kernel point convolution algorithm, and obtaining an initial super-point pair, a first super-point feature pair, and an initial dense point pair; obtaining a target super-point pair according to the initial super-point pair and the first super-point feature pair; obtaining target dense point pairs and a first corresponding relation between the target dense point pairs according to the target super point pairs and the adjacent initial dense point pairs; screening the initial rotation translation matrix corresponding to the first corresponding relation to obtain a target rotation translation matrix; and according to the target rotation translation matrix, carrying out pairwise pairing operation on the initial point cloud pairs, and combining a preset body scale measurement key point to obtain the body scale of the target object. The method can improve the accuracy of point cloud registration, and can be widely applied to the technical field of three-dimensional modeling.

A user equipment (UE) configured to: determine that at least partial skipping of at least one measurement occasion of a measured period is enabled; if so enabled, determine a number of measurement occasions within the measurement period that are skipped, extend the measurement period based on the number of measurement occasions within the measurement period that are skipped, and obtain one or more radio resource management (RRM) measurements during one or more measurement occasions within the measurement period, as extended. The extension may be a product of the number of skipped measurement occasions and one of: measurement gap repetition period (MGRP), SSB-based RRM Measurement Timing Configuration (SMTC) period, or discontinuous reception (DRX) cycle. The UE may extend the measurement period by ensuring that a ratio of a total number of measurement occasions including both the at least one measurement occasion within the measurement period that is skipped and the one or more measurement occasions within the measurement period during which the one or more RRM measurements are obtained such that a number of measurement occasions within the measurement period that are skipped satisfies a predefined threshold.

The present application relates to a kind of regional CORS reference station space layout method, comprising the following steps: (1) reference station overall scale measurement;(2) core station and ordinary station scale measurement;(3) user group activity analysis;(4) based on latitude and longitude grid uniform layout;(5) according to existing CORS site distribution adjustment;(6) regional topography and land class distribution condition analysis, reference station layout adjustment is carried out;(7) infrastructure and key application layout analysis, reference station layout adjustment is carried out;(8) average station spacing statistics and reference station net shape coefficient calculation;(9) whether reference station net shape coefficient meets the predetermined index requirement, yes, then complete layout;No, then return to step (6), repeat step (6) to (8).The site layout of the present application is more scientific and reasonable, can realize the efficient intensive use of CORS reference station resources, meet the high availability, high stability requirement of whole regional space service.

A method, apparatus, and computer program product are provided. In the context of a method, the method determines that at least partial skipping of at least one measurement occasion of a measurement period is enabled. The method, in an instance in which at least partial skipping of at least one measurement occasion of the measurement period is enabled, determines a scaling factor associated with the measurement period. The method scales the measurement period such that the measurement period is extended based on the scaling factor. The method obtains one or more radio resource management measurements during one or more measurement occasions within the measurement period, as extended.

The present invention provides a calibration method for the structural error parameters of a two-dimensional orthogonal rotating mirror system, which can be applied to the field of large-scale measurement technology. The calibration method includes: obtaining measured coordinate values ​​and reference coordinate values ​​of n spatial points; wherein the measured coordinate values ​​are in a spherical coordinate system and are measured using the two-dimensional orthogonal rotating mirror system, and the reference coordinate values ​​are measured using a laser tracker; constructing an error model based on q structural error parameters and a distance term, azimuth angle, and pitch angle of the spherical coordinate system associated with each structural error parameter; wherein 1≤q≤3n-6; constructing corrected coordinate values ​​of the n spatial points based on the error model and the measured coordinate values ​​of the n spatial points; and obtaining solution values ​​of the q structural error parameters based on the corrected coordinate values ​​of the n spatial points and the reference coordinate values ​​of the n spatial points, thereby completing the calibration of the structural error parameters.

The invention discloses a grating line scale measurement coupling error compensation method and device, the device comprises a measurement device, a length measurement laser module and an elastic device, the measurement device is provided with a microscope objective lens, the measurement device is connected with the length measurement laser module through the elastic device, the measurement device comprises a slide plate, and the slide plate is provided with a grating line scale. The length measuring device comprises a length measuring laser module, a linear scale and a measuring scale cylinder, the linear scale is arranged on the measuring scale cylinder, one end of the measuring scale cylinder is connected with the length measuring laser module through the elastic device, and an L-shaped connecting rod is arranged on the measuring scale cylinder and connected with the length measuring laser module. According to the invention, through comprehensive analysis and modeling of various coupling error factors, accurate compensation of the coupling error in the grating line scale measurement process is realized, and the measurement precision is improved.

The present application relates to the technical field of aircraft assembly, and in particular to a target-accuracy-based continuity design method for a large‑scale measurement field. The method comprises: on the basis of distance-measurement accuracy parameters of a measurement device, calculating a first measurement distance under tooling accuracy requirements; determining a minimum number of measurement devices on the basis of the first measurement distance, and correcting the minimum number of measurement devices to obtain a first number of measurement devices; obtaining final measurement distances of all the measurement devices along a longest measurement line by means of mutual correction between the number of measurement devices and the measurement distance; calculating continuity spacings of coordinate‑system datum points on the longest measurement line on the basis of the measurement distances; and completing the layout of the coordinate‑system datum points on the longest measurement line. The present application can satisfy the measurement accuracy requirements of tooling and ensure the manufacturing accuracy of aircraft products.

A method, performed by a user equipment (110, figure 1) determines 610 that at least partial skipping of at least one measurement occasion of a measurement period is enabled. The method, in an instanc

The invention provides a method for calibrating structural error parameters of a two-dimensional orthogonal rotating mirror system, which can be applied to the technical field of large-size measurement. The calibration method comprises the following steps: acquiring measurement coordinate values and reference coordinate values of n spatial points; wherein the measurement coordinate value is a spherical coordinate system, the measurement coordinate value is measured by using a two-dimensional orthogonal rotating mirror system, and the reference coordinate value is measured by using a laser tracker; constructing an error model based on the q structural error parameters and the distance item, the azimuth angle and the pitch angle of the spherical coordinate system associated with each structural error parameter; wherein 1 < = q < = 3n-6; on the basis of the error model and the measurement coordinate values of the n space points, constructing correction coordinate quantities of the n space points; and on the basis of the correction coordinate quantities of the n space points and the reference coordinate values of the n space points, solving values of the q structural error parameters are obtained, and calibration of the structural error parameters is completed.

The invention provides an intelligent integrated multi-source high-precision measurement method for a high-rise building, and relates to the technical field of distance measurement, and the method comprises the following steps: arranging a mobile laser radar around the building, and generating a three-dimensional point cloud model; height and perpendicularity measuring equipment is built between the two layers of windows at the height position to be measured; the whole measuring equipment is kept in a long-time static state, and actual height data of the position is measured; starting laser radar scanning, and recording coordinate deviation of each point on the surface of the building; obtaining perpendicularity results of different data sources; according to the method, multi-source data serve as backups for each other, the application scene is expanded, perpendicularity data in a large range is obtained, the efficiency of large-range measurement is improved, the influence on a final measurement result due to the fact that the device does not reach a horizontal state during installation can be reduced, and the measurement accuracy is improved. The requirement on the mounting precision of the device is reduced, and the airflow interference is also reduced.

A measurement system may include two or more sets of optical subsystems to simultaneously produce measurement data regarding two or more samples; a coarse translation stage providing movement along a plane; two or more fine translation stages disposed on the coarse translation stage, arranged in a common mode with the two or more sets of optical subsystems, wherein each of the fine translation stages provides motion along the plane and is arranged to position one of the two or more samples below one of the two or more sets of optical subsystems. The system may further include a controller to independently direct each of the fine translation stages and an associated one of the optical subsystems to generate measurement data for a respective sample, and generate one or more measurements of the sample based on the associated measurement data.

The invention relates to a tool for rapidly measuring the hole center distance of a special-shaped workpiece, and the tool comprises a tool bottom plate, and a positioning unit, a pressing unit and a detection unit which are disposed on the tool bottom plate, one side of the detection unit is provided with the positioning unit, and the other side of the detection unit is provided with the pressing unit. The positioning unit is used for positioning a first hole of a to-be-detected workpiece, the pressing unit is used for pressing a second hole of the to-be-detected workpiece, and the detection unit is used for measuring the hole center distance between the first hole and the second hole. The device has the advantages that mechanical positioning, clamping and scale measurement are combined, and the defects that an existing high-precision measurement method (three-coordinate) is low in efficiency, and an existing special automatic detection tool is high in cost and strict in environmental requirement are effectively overcome; the method is especially suitable for rapid, low-cost and large-batch process inspection or final inspection of the hole center distance of the special-shaped workpiece in a production field, and has very high practical value and popularization prospect.

The invention relates to the technical field of geotechnical mechanics and geophysical exploration, and discloses a three-dimensional electrical resistance tomography method for geotechnical materials and a data acquisition device. The method aims to solve the technical problems that in the prior art, a general linear interpolation method is prone to generating a block mosaic effect and is extremely unfavorable for image analysis, and a nonlinear interpolation method is poor in accuracy, possibly causes calculation difficulty and cannot achieve real-time rapid imaging. The method comprises the following steps: (1) collecting electrode data; (2) screening and summarizing data; (3) carrying out hierarchical plane inversion imaging; and (4) depth three-dimensional interpolation. The spatial electrode arrangement mode is optimized, a numerical inversion imaging system capable of being used for engineering scale measurement is formed, real-time, rapid and accurate monitoring of geotechnical engineering projects is achieved, the detection speed is high, the imaging efficiency is high, the calculated amount is relatively small, the requirement for non-intrusive engineering monitoring is met, and engineering condition damage cannot be caused.

The utility model discloses a measuring scale for engineering supervision, and belongs to the technical field of engineering supervision. The ruler comprises a base, a main ruler, a sliding block and an auxiliary ruler, a groove is formed in the front portion of the base, the main ruler is fixedly connected in the groove, a transverse groove is formed in the base, a T-shaped groove is formed in one side of the base, the T-shaped groove is communicated with the transverse groove, the sliding block is installed in the T-shaped groove, a first pin hole is formed in the sliding block, the first pin hole is hinged to one end of a pin shaft, and the second pin hole is hinged to the other end of the pin shaft. The other end of the pin shaft is hinged to the auxiliary ruler. The measuring scale is provided with the main scale and the auxiliary scale, and the extending length and the extending angle of the auxiliary scale are adjusted, so that the measuring range of the measuring scale is enlarged, the universality is improved, and the problem of difficulty in measurement at a narrow position is solved.

The present invention relates to the technical field of three-dimensional water flow simulation, and particularly relates to a calculation method for three-dimensional flow velocity distribution near a bridge pier. The method includes: performing coordinate transformation on the three-dimensional water flow continuity equation and the momentum equation; calculating the vertical turbulent eddy viscosity coefficient and the horizontal turbulent eddy viscosity coefficient; discretizing the perturbed momentum equation by using the finite volume method to obtain the corresponding discrete equation; obtaining the discrete general equation according to the boundary conditions required by the perturbed momentum equation; forming a tridiagonal system of equations from the corresponding discrete equation, the discrete general equation under the bed boundary condition, and the discrete general equation under the free water surface boundary condition, and solving it to obtain the perturbed flow velocity, and further obtaining the three-dimensional flow velocity and the vertical flow velocity. The present invention can obtain the flow velocity distribution upstream of the bridge pier, the flow velocity distribution downstream of the bridge pier, and the flow velocity distribution between the bridge piers according to the measured flow velocity at 0.5 times the water depth, reduce the calculation amount, and can be applied to large-scale measurements.

The application discloses a grating line scale measurement coupling error compensation method and device, which comprises a measuring device, a length measuring laser module and an elastic device, a microscope objective is arranged on the measuring device, the measuring device is connected with the length measuring laser module through the elastic device, the measuring device comprises a sliding plate, a line scale and a measuring scale cylinder, the line scale is arranged on the measuring scale cylinder, one end of the measuring scale cylinder is connected with the length measuring laser module through the elastic device, and an L-shaped connecting rod is arranged on the measuring scale cylinder and connected with the length measuring laser module. The application realizes accurate compensation of coupling errors in the grating line scale measurement process through comprehensive analysis and modeling of various coupling error factors, and improves the measurement precision.

The invention discloses a phase deflection measurement gradient field three-dimensional surface shape reconstruction method. Aiming at the problems of low precision and poor stability when a traditional gradient integral or Poisson reconstruction algorithm is used for processing a missing measurement area, noise data and large-scale data, the invention provides a unified adaptive solution framework. The core idea of the method is that on the basis of inputting gradient field data and mask moments, a linear equation set containing gradient constraints and thin plate regularization constraints at the same time is established, and global optimal reconstruction is achieved in a least square mode. When the number of effective data points is small, direct solution is adopted; when the data scale is large, a rapid iteration solving strategy combining a precondition conjugate gradient method (PCG) and an incomplete Cholesky (IC) precondition device is adaptively switched, smooth compensation of a missing measurement area can be guaranteed, the detail precision of the curved surface can be maintained, the calculation efficiency is greatly improved, and the method is suitable for large-scale measurement. The method is high in precision, rapid in convergence and good in robustness in measurement of small workpieces and large free-form surfaces.

The present invention discloses a multi-scale measurement method based on a three-dimensional spherical coordinate system and a two-axis pan-tilt head, belonging to the field of computer vision measurement technology. The method collects experimental data, establishes a magnification and field of view offset relationship model, establishes a three-dimensional spherical coordinate system, obtains a target frame of an identified target object, and calibrates the identified target frame to the three-dimensional spherical coordinate system at a large scale. After three-dimensional space registration of all target objects, the center viewing angle of the pan-tilt head is moved to the center of the target frame of the first target object. After the pan-tilt head center and the target frame center are aligned, the magnification is continuously increased to ensure that the minimum bounding box of the target object always remains within the camera's field of view, and the image of the target object is maximized. The method automatically selects an appropriate magnification and accurately adjusts the pan-tilt head viewing angle based on the angular range of the target frame and the field of view offset model of the pan-tilt head, ensuring that the pan-tilt head can accurately cover the target area at different magnifications, thereby completing high-precision target object measurement.

The invention relates to the technical field of power grid investment decision, and discloses a power grid investment scale calculation and distribution method and system based on data analysis, and the method comprises the steps: dividing an actual business scene of power grid investment into a plurality of special fields, constructing common indexes and characteristic indexes of the special fields, calculating a measurement coefficient of the special field according to the common index and the characteristic index, and calculating an allocation scale measurement value of the special field by combining the historical allocation scale value, thereby obtaining a total control scale needing to be allocated; and calculating scale allocation values of the special fields needing scale allocation in combination with the generality indexes, carrying out primary scale allocation, and when the scale allocation values of the special fields need to be adjusted, carrying out overall scale allocation adjustment according to the adjusted scale allocation values and the generality indexes of the special fields which are not adjusted. According to the invention, objective and scientific scale calculation and scale allocation can be realized, the accuracy is improved, and the efficiency and flexibility of scale adjustment are improved.

The invention provides a cross-scale measurement method and device based on an atomic force microscope system, and the method comprises the steps: enabling an atomic force probe to be located above an initial measurement position of a to-be-measured sample, and enabling a first displacement platform to be in a stroke initial state; driving the atomic force probe to move from a position far away from the surface of the to-be-tested sample to a position close to the surface of the to-be-tested sample; when the distance between the initial measurement position and the termination measurement position of the to-be-measured sample is greater than the maximum stroke of the first displacement platform along the stroke direction of the first displacement platform, the atomic force probe is controlled by the first displacement platform and the second displacement platform to carry out measurement according to a plurality of measurement intervals which are sequentially distributed; the distance between the starting end and the tail end of each measurement interval is smaller than or equal to the maximum stroke of the first displacement platform; and splicing the measurement results of the plurality of measurement intervals. According to the technical scheme, the problem that the working range of the atomic force microscope is limited is solved.

The invention discloses a multi-scale measurement method based on a three-dimensional space spherical coordinate system and a two-axis holder, and belongs to the technical field of computer vision measurement. Experimental data are collected, and a multiplying power and view field deviation relation model is established; establishing a three-dimensional space spherical coordinate system; obtaining a target frame of the recognized target object, and calibrating the recognized target frame to a three-dimensional space spherical coordinate system under a large scale; after three-dimensional space registration is carried out on all the target objects, the center view angle of the holder is moved to the center of the target frame of the first target object; after the center of the holder is aligned with the center of the target frame, the magnification is continuously amplified to ensure that the minimum external frame of the target object is always kept in the visual field of the camera, and the image of the target object is amplified to the maximum extent. According to the method, the appropriate multiplying power is automatically selected and the viewing angle of the holder is accurately adjusted according to the angle range of the target frame and the view field offset model of the holder, so that the holder can accurately cover the target area under different multiplying power, and high-precision target object measurement is completed.