139 results about "Planar grid" patented technology

The present invention relates generally to a multi-reflecting time-of-flight mass spectrometer (MR TOF MS). To improve mass resolving power of a planar MR TOF MS, a spatially isochronous and curved interface may be used for ion transfer in and out of the MR TOF analyzer. One embodiment comprises a planar grid-free MR TOF MS with periodic lenses in the field-free space, a linear ion trap for converting ion flow into pulses and a C-shaped isochronous interface made of electrostatic sectors. The interface allows transferring ions around the edges and fringing fields of the ion mirrors without introducing significant time spread. The interface may also provide energy filtering of ion packets. The non-correlated turn-around time of ion trap converter may be reduced by using a delayed ion extraction from the ion trap and excessive ion energy is filtered in the curved interface.

The invention discloses a method for correcting distortion in real time based on a GPU camera and video camera. The method adopts digital image processing technology to calculate a system of nonlinear equations consisting of two radial distortion coefficients, two centrifugal distortion coefficients and two thin prism distortion coefficients by a least square method in a correction algorithm based on a planar grid model so as to obtain a space transformation equation, and carries out synchronous spatial alternation on pixel spots of an image shot by an imaging system so as to obtain an image after distortion correction. The method solves the problem of optical distortion, and improves the correction precision to sub-pixel grade; through adopting the GPU technology with parallel processing capability, the processing velocity is improved by over 40 times, realizing real-time distortion correction (over 30 frame/second) of an 1920*1080 high-definition image, and reducing the processing cost for lens optical design by 20 to 70 percent.

The invention relates to a vessel and kit for thermal cycling applications, a method for manufacturing such a vessel. The vessel comprises, in the form of a planar grid having a predefined pitch, a plurality of sample wells each having a well wall, which defines an open well end and a closed well end. According to the invention there are provided a plurality of ribs between pairs of adjacent wells, the ribs being connected to the walls of the wells and extending essentially in a plane perpendicular to the plane of the well grid. The invention enables manufacturing of dense microtiter plates, which are stable enough to be used in high temperature applications and allow for more efficient manufacturing of the plate.

The invention provides techniques for wrapping a two-dimensional texture conformally onto a surface of a three dimensional virtual object within an arbitrarily-shaped, user-defined region. The techniques provide minimum distortion and allow interactive manipulation of the mapped texture. The techniques feature an energy minimization scheme in which distances between points on the surface of the three-dimensional virtual object serve as set lengths for springs connecting points of a planar mesh. The planar mesh is adjusted to minimize spring energy, and then used to define a patch upon which a two-dimensional texture is superimposed. Points on the surface of the virtual object are then mapped to corresponding points of the texture. The invention also features a haptic/graphical user interface element that allows a user to interactively and intuitively adjust texture mapped within the arbitrary, user-defined region.

The invention provides a three-dimensional geological structure model angular point grid dissection method considering folds. The spatial morphological characteristics of the folds and the regulation of isoclinal lines in Ramsey fold classification are fully considered on the basis of a three-dimensional geological structure model, and angular point grid dissection of the geological structure model is performed with an angular point grid acting as a spatial metadata model and a stratigraphic structure model acting as layer control. Planar grid dissection is performed through the projection range of trend lines and the geological structure model in an XOY plane. Spatial rotation is performed on the multivalued surface stratums of the folds included in the geological model. Vertical grid dissection is obtained through growth of projection points on a curved surface along an inclination angle and other isoclinal line directions according to certain step length, and resetting is performed through inverse matrix transformation after completion of dissection. The spatial coordinates of the corresponding points are calculated through transverse and vertical grid dissection, and the spatial metal-model is constructed according to the coordinates and topological information and visually displayed so that transformation from the three-dimensional geological structure model to the angular point grid meta-model considering the folds is realized.

Provided is an indoor positioning information push method based on GNSS satellite signals. The method includes the following steps: (1) arranging a camera device indoors, taking the camera device as acoordinate system original point to divide a to-be-measured room into planar grid coordinate systems, and utilizing a moving object detection technology to obtain two-dimensional coordinate values ofa user in the room; (2) obtaining an actual geological coordinate, time service information and PPS synchronous second pulse information of an antenna through the indoor GNSS satellite signal reception antenna, and combining the two-dimensional coordinate values of the user and the geometrical parameters of the room to perform calculation and obtaining actual geological coordinate values of the user; (3) conducting regeneration of GNSS satellite signals; and (4) through the intelligent antenna technology, forming a wave beam pointing the user and broadcasting the GNSS satellite signals in a corresponding position so that a positioning apparatus of the user resolves the broadcasting position. The GNSS satellite signals are taken as a medium to perform indoor positioning. The method has theadvantages that the precision is high, the speed is fast and a reception apparatus does not need to change or add other pieces of hardware.

The invention discloses a wind power prediction method based on a deep convolutional neural network, and the method comprises the following steps: selecting and collecting the data of a wind power plant, and enabling the real coordinates of a wind driven generator to be mapped to a plane grid through employing a grid space embedding method; Filling the output of all wind turbines in the wind powerplant at a certain moment into a grid according to a mapping result to obtain scene characteristics corresponding to the moment, and arranging a plurality of continuous scene characteristics according to a time sequence to form a multi-channel image, namely, a space-time characteristic; Constructing three deep convolutional network models on the basis of the space-time characteristics to predictthe wind power; And analyzing and comparing the wind power prediction effect of each model. According to the method, STF in a multi-channel image form is constructed by embedding a grid space of a wind turbine in a wind power plant area, and the space-time transformation process of air flow is fully expressed; Three deep convolutional network models are provided, and each model can predict a largenumber of wind power of the wind turbine at the same time.

The present invention discloses a terrain modeling and grid generation method and device. The method comprises the steps of: converting rule grid terrain elevation data to a form of X, Y and Z three-dimensional coordinates, performing triangular grid division, achieving consistence of a bottom-layer plane grid topological structure and generating multiple layers of triangular prism grids with suitable lengths of stretch. The technical problems are solved that a method for extraction of point coordinates from contour lines is employed to perform terrain modeling and grid generation, the generated grids are sparse and cannot realistically restore terrain details and if the number of extracted data points is added to caused slow speed of node searching and positioning and the computation amount is large in the prior art.

The invention discloses a pollutant total-amount control method under the large-scale planar grid condition. The pollutant total-amount control method includes the steps of determining the pollutant total-amount control range and pollutant total-amount control pollutants; determining generalized pollution sources, the minimum value and the maximum value of distributed amounts of the generalized pollution sources and a water-area water-quality concentration target value; building a water quality model, and calculating the water quality response fields of the pollutants corresponding to the pollution sources within the total-amount control range; determining an objective function and constraint conditions of pollutant total-amount distribution, building a pollutant total-amount distribution model with a linear planning method, calculating pollution-source distribution loads after constrain equations of redundancy points in the model are removed, and controlling the pollution-source total amount with the pollution-source distribution loads. The applicability of the pollutant total-amount control method under the large-scale planar grid condition can be improved.

The invention discloses a hexahedral mesh division complex pattern tire finite element modeling method which comprises the following steps: S1, drawing a tire two-dimensional section geometric model,performing tire segmentation processing in advance according to the characteristics of tread pattern blocks, and recording the total number N of segments; S2, projecting the geometrical characteristicpoints of a section of pattern block to a two-dimensional plane grid through segmentation expression; S3, projecting the constructed two-dimensional planar grid nodes onto the inner cavity surface ofthe tire, and generating a section of three-dimensional tread and pattern block grid through layered stretching of the grid nodes; S4, drawing a tire side two-dimensional plane grid, rotating the tire side two-dimensional plane grid into a three-dimensional grid according to a corresponding angle, and combining the three-dimensional grid with grid nodes of the tread; and S5, repeatedly rotating and copying the generated three-dimensional tire grid around the central axis of the tire to generate N sections of three-dimensional tire grids, and obtaining a complex pattern tire finite element model divided by hexahedron grids. According to the method, the complex pattern blocks and the tread are connected by adopting grid common-node integrated modeling, so that the method is more accurate and higher in solving efficiency.

The invention provides a small-resistance-value grounding grid of a large device. The small-resistance-value grounding grid comprises horizontal grounding electrodes and vertical grounding electrodes. The horizontal grounding electrodes are arranged under the ground and are arranged vertically and horizontally to form a horizontal grounding electrode planar grid. A plurality of vertical grounding electrodes are perpendicular to the horizontal grounding electrode planar grid, are arranged at multiple joints of the horizontal grounding electrodes arranged vertically and horizontally and are connected with the horizontal grounding electrodes through arc-shaped clamps. A grounding grid extraction electrode is roughly arranged at the center of the horizontal grounding planar grid. The lower portions of the vertical grounding electrodes are arranged on thin-wall iron sheet protection cylinders, resistance reducing agents are poured into the thin-wall iron sheet protection cylinders, and the cylinder walls of the thin-wall iron sheet protection cylinders are provided with holes. The horizontal grounding electrodes are arranged in trenches, and the bottom faces of the trenches are provided with supporting rods. The horizontal grounding electrodes are fixed to the supporting rods and located in the centers of the cross sections of the trenches, and the resistance reducing agents are poured into the trenches. By means of the small-resistance-value grounding grid, the construction cost is lowered, land is saved, the small-resistance-value grounding grid is finished in a small area, the stability of the grounding effect is guaranteed, and safe and stable operation of a grounding device is guaranteed.

A structure and method for manufacturing the same for manufacturing a contact structure for microelectronics manufacturing including the steps of forming first and second metal sheets to form a plurality of outwardly extending bump each defining a cavity. Symmetrically mating the first and second metal sheets in opposing relation to each other to form upper and lower bumps each defining an enclosure therebetween wherein the mated first and second sheets form a contact structure. Coating the contact structure with an insulating material, and fabricating helix shaped contacts from upper and lower bumps. The helix shaped contacts having first and second portions being in mirror image relationship to each other.

A chip and shaving collection system for a key cutting machine has a trough with a linear first trough drawer rail located on a trough first side and a linear second trough drawer rail located on a trough second side. The trough further has a linear first trough support rail having a general shape of a triangular prism located on a trough first side and a linear second trough support rail having a general shape of a triangular prism located on a trough second side. The system has a plurality of linear support beams located on the support rails. The system has a rigid planar grid member spanning the trough top located on the linear support beams. The system has a drawer that is fluidly sealed located in the trough. The system has a key cutting machine located on the grid member.

Multilayer stereoscopic grid array for recognizing noise source in a beam shaping method is characterized in that: a group of microphones adopts the multilayer stereoscopic grid structure distribution in such a manner that the microphones are distributed on four sides of a rectangular pyramid, wherein, the projections of the microphones onto the bottom of the rectangular pyramid are arranged in plane grid. Sound pressure signal picked up by each microphone can be calculated in a beam shaping method to rebuild the sound pressure of the source area. The invention is simple in implement method without increasing the number of the microphones; compared with a plane grid array, the aim of discretization can be achieved, influence of grating lobe and virtual image is reduced, meanwhile, resolution of recognizing the noise source can be improved.

The invention discloses a plane meshing method and dangerousness measuring method for a debris flow accumulation fan. For the defect that an existing dangerousness degree partition and quantitative evaluation method for the debris flow accumulation fan is mainly influenced by subjectivity, the plane meshing method for the debris flow accumulation fan is firstly provided. According to the plane meshing method for the debris flow accumulation fan, an accumulation fan planar model is built on the basis of data surveying, and the terrain of the debris flow accumulation fan is divided into mesh units. Based on the method, the dangerousness measuring method for the debris flow accumulation fan is further provided. According to the dangerousness measuring method for the debris flow accumulation fan, the dangerousness degree P (xi) of each mesh unit is measured and calculated, and the dangerousness of the debris flow accumulation fan is determined according to the distribution characteristic of the dangerousness degrees P (xi) of the mesh units on the terrain of the debris flow accumulation fan. According to the plane meshing method and the dangerousness measuring method for the debris flow accumulation fan, data are acquired through surveying, mapping and other means, and an evaluation result is not influenced by subjective factors; the measuring method decomposes the dangerousness degree of the accumulation fan into a component P (u) and a component P (h), the dangerousness of burying and the dangerousness of impact can be measured respectively, and debris flow prevention engineering practice is guided better.

A folding playpen has a frame assembly including a plurality of parallel uprights arranged in a geometric configuration and a plurality of upper rails pivotally affixed to and extending between a top portion of adjacent ones of the uprights. A co-planar grid of braces extends between said the uprights and includes a central support block at a center of geometrically configured uprights. The braces being pivotally attached to the central support block and to a respective one of the uprights. A flexible covering extends about a periphery of the frame assembly and a pad is supported by the co-planar grid. The frame assembly is selectively collapsible from a usable configuration to a storage configuration by vertically translating the central support block from a lower position to a position proximate to a top of the uprights.

The invention relates to an assembling self-bearing die of a ribber floor. The assembling self-bearing die comprises an inner core and an outer die, wherein the outer die comprises a bottom die, and a baffle arranged on the outer edge of the bottom die; the bottom die comprises a grid structure where multiple bottom die cavities are formed; the inner core is respectively arranged in each bottom die cavity, and a casting gap is retained between the baffle and the inner core and between the inner cores, and formed by the space surrounded by the baffle, the bottom die and the inner core; a steel bar truss structure is arranged on the bottom die and fixedly arranged in the casting space and comprises a planar grid structure, and steel bars crossing over the planar grid structure; the height of the inner core is less than that of the steel bar truss structure. The assembling self-bearing die is large in construction load bearing capacity, high in integral rigidity and good in anti-seismic property.

The invention discloses a flexible composite forming method of a cylindrical member with grid ribs. The method comprises the following steps that a panel billet is selected according to the size of the target member; the panel billet is placed onto a workbench of a press machine along a guide plate; an integrated grid rib structure is extruded on the whole billet through a continuous local extruding method, so that a planar grid plate is obtained; then a curved-face grid plate of the grid rib structure is formed by means of a three-roll bending method; and finally, the cylindrical element with the grid ribs is formed by means of a welding method. According to the flexible composite forming method, plastic working and welding are organically combined, the cylindrical member with the grid ribs can be formed precisely, efficiently and flexibly, the product quality and manufacturing efficiency are improved, the manufacturing cost is lowered, and the manufacturing range is expanded.

Provided is a computing method of lighting surface light condensation energy flux density distribution of a solar tower type electric generation thermal absorber. According to the thermal absorber corresponding to an unilateral heliostat field, the lighting surface of the thermal absorber is divided into rectangular grids to form rectangular planar grids or cylindrical surface grids, and meanwhile borders of a grid in a shape of Chinese character 'tian' of the lighting surface are determined. The reverse light tracing method is used, a light condensation energy flux density value of the heliostat field on the borders of the 'tian'-shaped grid of the lighting surface of the thermal absorber is computed, the lighting surface grid of the thermal absorber is unfolded into an X-Y planar grid, according to the light condensation energy flux density value of the heliostat field on the borders of the 'tian'-shaped grid of the lighting surface of the thermal absorber, energy flux density values of all grid points of the lighting surface of the thermal absorber are reset in an interpolation mode. In reference to a circumferential heliostat field, for all cylindrical surface lighting surface sub areas, the energy flux density value of the borders of the 'tian'-shaped grid is computed first, and then light condensation energy flux density values of corresponding lighting surface sub areas are reset in an interpolation mode.

The invention provides a robot control method and system based on a multi-line laser radar and an event camera SLAM. The method comprises the steps: generating a 3D map according to image data collected by a binocular event camera; acquiring laser point cloud data acquired by a multi-line laser radar, wherein the multi-line laser radar and the binocular event camera are jointly calibrated and synchronized in advance; fusing the laser point cloud data and the 3D map to obtain a fused 3D map; performing 2D mapping on the fused 3D map to obtain a planar grid map; acquiring robot pose data measured by an inertial measurement unit; and generating an obstacle avoidance motion control instruction according to the planar grid map and the robot pose data, and sending the obstacle avoidance motion control instruction to a robot. Therefore, robot obstacle avoidance control can be realized stably and accurately at a high speed.