9 results about "Scale measurement" patented technology

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.

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 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 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 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.