15 results about "Z-Coordinate" patented technology

The application provides a 3DEXP platform modeling method based on a two-dimensional arrangement drawing of a relief valve. The technical scheme comprises the following steps: firstly, analyzing information requirements of a relief valve model arrangement of a 3DEXP platform, and setting a relief valve equipment model library in the 3DEXP according to a relief valve standard; then, reading relief valve positioning information from a two-dimensional arrangement drawing, the two-dimensional arrangement drawing of the relief valve containing complete coordinate axis information of the whole ship, and based on this, performing two-dimensional arrangement of the relief valve to read out XY coordinate values of the relief valve; then, in the case of determining two coordinate parameters, establishing vertical lines based on the XY coordinate values of the relief valve in the 3DEXP platform to determine Z coordinate values; finally, setting a separate coordinate axis for each relief valve, and taking intersection lines of YZ and XZ planes of the coordinate axis and an outer plate as a basis for inclination of the relief valve, thereby completing model arrangement of the relief valve after twice inclination rotation of the relief valve, and realizing arrangement of the relief valve adhering to the outer plate.

The application relates to the technical field of optical processing, in particular to a magnetorheological polishing multi-surface common element integrated processing method, which comprises the following steps: S1, decomposing a known actual grating track into a row coordinate according to a longitudinal coordinate mutation point; S2, splitting each row track into a main mirror first track segment, a slave mirror track segment and a main mirror second track segment according to a transition point circle diameter; S3, determining a transition point extension length according to a magnetorheological equipment removal function length; S4-S5, respectively extending the main mirror track segment and the slave mirror track segment and inserting new points; S6, obtaining three-dimensional coordinates by calculating z coordinates of each segment by using a corresponding surface equation; S7, splicing to generate a single-row ordered point sequence; and S8, combining all row tracks and rotating an angle to obtain a final track. θ Through the above scheme, the problems that multi-surface common element segmented processing has long redundant time, low efficiency, and the transition area joint is not accurately processed, the transition area of the optical element has a large range of edge, the effective aperture is reduced, and the imaging quality of the optical system is affected are solved.

The invention discloses a numerical control machine tool precision state evaluation method, system and device and a medium, and relates to the field of numerical control machine tool precision evaluation, and the method comprises the steps: installing a plurality of measurement blocks at a plurality of preset positions of a numerical control machine tool workbench; determining coordinate data of each measurement block along X, Y and Z coordinate axis directions to form a plurality of groups of measurement data; and determining the positioning errors of the X, Y and Z coordinate axes, the straightness deviations of the X, Y and Z coordinate axes and the perpendicularity deviations of the X, Y and Z coordinate axes based on a plurality of preset positions and a plurality of groups of measurement data. The objective of the invention is to solve the problems of high cost, long time consumption and incapability of efficient and integrated measurement of key geometric precision measurement of a traditional method in precision detection of a numerical control machine tool.

The application discloses a workpiece welding slag detection method and system based on a 3D line scanning camera, and comprises the following steps: S1, a single frame point cloud of a workpiece is acquired; S2, a straight line is extracted for the single frame point cloud, the distance of each point on the point cloud to the straight line is calculated, and is compared with a preset distance threshold value; if the distance is less than the preset distance threshold value, the corresponding point cloud is filtered out, and the z coordinate z_l of the projection point of each point on the straight line is calculated; if the z coordinate of the point is less than the z coordinate z_l of the projection point, the point is filtered out; S3, the retained point cloud is spliced into a total point cloud, the point cloud groups in the total point cloud are segmented, the span distances of the point cloud groups in different directions are calculated, and the span distances in different directions are compared with a preset span distance threshold value; if the span distance is greater than the preset span distance threshold value, the corresponding point cloud group is filtered, and the workpiece welding slag is obtained. The application has the advantages of high detection efficiency, accurate and comprehensive detection, etc.

The invention belongs to the technical field of mold manufacturing, and discloses a method for determining the spatial position of a machining plane. Comprising the following steps: establishing an X / Y / Z coordinate system by taking a geometric center of a processing area in a design processing plane as an original point of the coordinate system, making a normal vector line of the design processing plane through the original point and projecting the normal vector line on an XY plane, measuring an included angle between the normal vector line and a Z axis and an included angle between a projection line and an X axis, and rounding respectively, and a normal vector line of the actual machining plane is limited and restored according to the rounded angle, and a plane perpendicular to the normal vector line and passing through the original point is the actual machining plane. According to the method, various auxiliary lines can be automatically made by utilizing drawing software, angles are automatically decomposed, angle values are measured and output, and new machinable planes are automatically rounded and output according to the measured values, so that mold design data are easy to backtrack, machining quality reinspection is facilitated, the tedious degree of later modification is reduced, the design time is shortened, and the production efficiency is improved. The die is suitable for manufacturing various dies with inclined machining planes.

A request to add an overlay at a pixel located at (x, y) coordinates in images is received. Waypoints in a three-dimensional space are identified with respective two-dimensional projections onto the images falling inside a circle with a given radius r and centered at (x, y). An overlay z-coordinate is determined for the overlay as a weighted sum of respective z coordinates of the waypoints. The overlay is assigned a location (x, y, overlay z-coordinate).

The invention is suitable for the technical field of slip surface inversion, and provides a slip surface geometric inversion method coupling InSAR deformation data and numerical simulation, and the method comprises the steps: obtaining SAR image data, DEM data and drilling data of a landslide region; constructing a two-dimensional geologic model of the landslide area in three-dimensional simulation software based on the DEM data and the drilling data; optimizing the z coordinate vector by using a particle swarm optimization algorithm to obtain an optimal z coordinate vector which has a minimum fitness function and meets a preset spatial constraint; and constructing a sliding surface curve based on the optimal z coordinate vector. According to the invention, the efficiency and objectivity of sliding surface inversion can be improved.

The invention provides a three-dimensional velocity model time-depth conversion method and device and a medium, and belongs to the field of geophysical exploration. The method comprises the following steps: step 100, inputting original velocity volume data and carrying out preprocessing; step 200, generating a three-dimensional velocity model; step 300, calculating travel time by a rapid travel method; step 400, calculating coordinate mapping by a windward finite difference method; and step 500, outputting travel time and a coordinate mapping result. According to the method, the velocity model is constructed, the seismic wave propagation travel time of each grid point is calculated by using the fast marching method, and the X, Y and Z coordinates of each measurement point on the seismic wave propagation path are further calculated by using the windward finite difference method, so that the calculation accuracy and efficiency of the seismic wave propagation path are improved; the method is suitable for seismic wave propagation simulation in a complex stratum environment, and provides reliable data support for geophysical exploration.

The invention relates to an umbrella skirt surface pressure inflection point-based hard composite insulator heavy pollution area determination method, which comprises the following steps of S1, constructing a flow field equation near an insulator by using an RNG k-epsilon equation model, solving by adopting a Phase Couple SIMPLE algorithm, and analyzing a flow field around the insulator after a steady-state value is reached; s2, performing two-dimensional planarization processing on the surface of the umbrella skirt of the insulator, constructing an x-z coordinate system, drawing a plurality of groups of concentric circle lines, extracting pressure numerical values on the circle lines on the surface of the umbrella skirt, constructing a pressure-coordinate pressure distribution equation, performing derivation on the equation, and recording a coordinate value when the derivative is zero, wherein the coordinate value is a pressure inflection point; s3, forming a fitting curve on the two-dimensional planarized umbrella skirt of the insulator; and S4, constructing a high-voltage transmission line composite insulator heavy pollution area, defining boundary points, determining the shortest distance between two arcs, and then calculating each parameter. The method is low in operation difficulty, wide in application range and high in accuracy.

The invention discloses a BIM (Building Information Modeling) technology-based complex terrain rapid creation method, which relates to the field of new energy terrain investigation, and comprises the following steps of S1, scanning a complex terrain by using an unmanned aerial vehicle to acquire terrain data; s2, carrying out noisy point processing and data thinning processing on the topographic data to obtain processed data points; s3, generating a DEM model by using the processed data points, and exporting X, Y and Z coordinate data; s4, the coordinate data are imported into Dynamo, and coordinate points are automatically processed and arranged through coordinate geometry Cogo; and S5, generating a point group and a curved surface. By means of the Dynamo technology and the unmanned aerial vehicle scanning technology, a large number of feature points with coordinates and elevations can be efficiently, rapidly and accurately processed, a complex terrain curved surface is automatically generated, the model can be modified and processed in real time by modifying a data table in real time, and powerful data support is provided for subsequent earthwork calculation.

The invention relates to a method for determining an orientation of an object in an X-Z coordinate plane relative to a B0 field magnet of a magnetic resonance tomograph by means of a three-dimensional magnetic field strength sensor arranged in fixed relative position at the movable object, comprising at least the following steps: providing B0 reference data; positioning the object with respect to the Z coordinate axis at a first position outside the B0 field magnet; providing a first measurement value of the magnetic field strength sensor at the first position; deriving a first angle value by means of the first measurement value of the magnetic field strength sensor at the first position and the B0 reference data; positioning the object with respect to the Z coordinate axis at a second position inside the B0 field magnet; providing a second measurement value of the magnetic field strength sensor at the second position; deriving a second angle value by means of the second measurement value of the magnetic field strength sensor at the second position and the B0 reference data; correcting the first angle value by means of the second angle value and providing a corrected first angle value.

The utility model provides a device for automatically measuring lattice coordinates of a stacker, which comprises a goods shelf, the stacker and a positioning measuring device, a plurality of lattices are arranged on the goods shelf in a rectangular array, and the depths of the lattices extend along the Z-axis direction; a telescopic pallet fork is arranged and can move in a reciprocating mode in the Z-axis direction so as to stretch into the goods grids or retract from the goods grids; the stacking machine can drive the telescopic pallet fork to horizontally move in the X-axis direction and do lifting motion in the Y-axis direction, the X-axis direction is the length direction of the goods shelf, and the Y-axis direction is the height direction of the goods shelf. The positioning and measuring device is arranged on the stacking machine and used for measuring the X coordinate, the Y coordinate and the Z coordinate of a goods lattice at a target position and reading the X coordinate and the horizontal walking speed of the goods carrying table when the goods carrying table moves in the X-axis direction and the Y coordinate and the lifting speed of the goods carrying table when the goods carrying table moves in the Y-axis direction in real time; according to the utility model, the measuring efficiency of goods grids is improved, the labor cost is reduced, the operation safety is guaranteed, and the system adapts to the intelligent warehousing development trend.

A dielectric structure useful for shaping electromagnetic, EM, phase wavefronts, includes: a body having a monolithic construct; the body having a height dimension, H, from a proximal end to a distal end equal to or less than 60% of an overall outside dimension, D, of the body at the distal end, the distal end being disposed a distance away from the proximal end along a z-axis of an orthogonal x-y-z coordinate system, the distal end forming an electromagnetic aperture of the structure; the body having a sidewall between the proximal end and the distal end that forms and defines an interior cavity that is open at the proximal end, and closed at the distal end, the sidewall having a plurality of structural disruptions around an enclosing boundary of the interior cavity, the plurality of structural disruptions disposed and configured to reduce electromagnetic reflections.

The invention relates to a method for quickly evaluating a flatness error, which comprises the following steps of: performing integral translation on discrete data points of a measured plane based on a minimum region criterion, constructing a standardized flatness mathematical model, and searching a unit normal vector of an ideal reference surface to realize quick calculation of the flatness error. According to the method, an original measurement point is moved forwards by a preset distance along a Z axis, so that Z coordinates of all data points are positive, and the influence of coordinate positions on an evaluation result is eliminated; then assuming that an ideal reference surface passes through an original point, establishing a reference surface equation and a unit normal vector thereof, and calculating a projection distance from each point to the reference surface; constructing an objective function through the maximum projection distance and the minimum projection distance, and updating a reference surface normal vector by adopting an iteration mode to obtain an ideal reference surface meeting a minimum region criterion; and outputting the minimum distance difference between the inner and outer parallel surfaces as a flatness error. The method is clear in structure, easy to code, high in implementation speed and capable of obtaining a high-precision flatness evaluation result in a short time.

The invention provides a method for verifying an ECDSA signature. A point R is defined by u1*G+u2*Q, G being a base point, Q being a public key point, u1 and u2 are scalar expressed as a series of bits u1[k] and u2[k], and the method comprises: - determining (202) coordinates for G, Q and G+Q with a common initial value Zinitial; - initializing (204) a first scalar variable λ to 1; - initializing (204) an accumulating variable and iterating the following steps for k varying between 1 and n-2 : - updating (209) the accumulating variable by applying a function to a previous value of the accumulating variable, the function being selected based on u1[k] and u2[k]; - updating (210) λ so that a current value of the Z coordinate of the accumulating variable is equal to Zintiial multiplied by the first scalar variable λ.