80 results about "Two grid" patented technology

The invention relates to the technical field of digital twinning, in particular to a high-performance digital twinning system rendering method based on dual-grid and neural network mapping, and the method comprises the steps: constructing a high-precision calculation grid and a low-precision rendering grid, and building a space mapping relation between the two grids; executing multi-working-condition numerical simulation to obtain a high-dimensional simulation result snapshot matrix; the dimension reduction projection operator is used for reducing the dimension of a high-dimensional simulation result of any working condition into an r-dimensional feature vector; generating low-dimensional reference field data by using the space mapping relation; training the neural network until a mapping network parameter is obtained through convergence; obtaining current working condition parameters of the equipment in real time, and obtaining a current r-dimensional feature vector by using the dimensionality reduction projection operator; and quickly generating physical field prediction distribution on the low-precision rendering grid and performing pseudo-color rendering. According to the scheme, the problem that a traditional method is low in rendering efficiency is solved, and the method has the advantages of reducing computing resource consumption and keeping visualization precision.

A dynamic frequency coordination control method for asynchronous regional power grids during wet and dry seasons is provided. By using frequency synchronous control in VSC-HVDC, frequency consistency and synchronization between the sending-end and receiving-end grids can be ensured within the range of power adjustment, enabling real-time and automatic sharing of frequency regulation resources between the two grids. Through the use of bilateral frequency limiting control in LCC-HVDC, the frequency regulation effect is enhanced, balancing frequency fluctuations between the sending-end and receiving-end grids. VSC-HVDC adaptive reactive power support control is employed to provide reactive power support to nearby LCC-HVDC, avoiding frequent operations of LCC-HVDC converter transformers and filters during frequency limiting control actions, thereby extending equipment lifespan. Furthermore, by utilizing grid-following and grid-forming control in renewable energy grid integration with additional frequency control, the frequency support capacity of renewable energy generation is improved.

The application relates to a kitchenware storage device and a running method and device thereof. A dumping detector is arranged to detect whether the kitchenware storage device dumps. In the case that the kitchenware storage device dumps, a control assembly can control a protection assembly to run. The protection assembly applies pressure to the kitchenware inserted between two adjacent grid bars towards one of the grid bars. Thus, the kitchenware inserted between the two grid bars is fixed under the action of the pressure, and the risk of the kitchenware sliding is reduced. Through the scheme, the kitchenware can be fixed when the kitchenware storage device dumps, the kitchenware such as knives is prevented from sliding, and the use safety of the kitchenware storage device is improved.

Hardware unit (10) for determining a non-linear ground surface, the hardware unit (10) comprising: at least one data input interface (1) via which the hardware unit (10) receives measurement points (M) from a 3D point-supplying sensor (20); a computing device (2) which maps the measurement points (M) into a two-dimensional grid (G) and determines a height difference for each grid cell (C) based on the measurement points (M) assigned to that grid cell (C), and classifies one of these grid cells (C) as invalid if the respective height difference exceeds a predetermined threshold; if the respective height difference of one of these grid cells (C) does not exceed the threshold and the respective height difference of at least two grid cells (C) directly adjacent to that grid cell (C) also does not exceed the threshold, classifies that grid cell (C) as a flat surface;wherein the computing device (2) performs a connected component analysis stepwise over the grid cells (C) classified as planar surfaces, separating planar surfaces belonging to obstacles from planar surfaces belonging to a ground surface and obtaining the nonlinear ground surface; a data output interface (3) that outputs the nonlinear ground surface.

1. The name of the design product: taste dish (only white and blue two grid taste dish). 2. The use of the design product: a taste dish for holding various seasonings. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective drawing.

The present invention relates to a fish farming method implemented in a fish farming installation comprising at least one annular tank (12), the method comprising the following steps: insertion of at least two vertical, horizontally movable, and removable transverse grids (13) into the annular tank, defining a section of said annular tank; transfer of a batch of fish into said section; translation of said at least two grids (13) within the annular tank (12) during the growth and / or maturation of said batch of fish within said section; removal of at least one of said at least two grids (13) after transfer of the batch of mature fish to the outside of said annular tank (12). Figure 8

The application relates to the technical field of water quality monitoring, in particular to a pollutant concentration fitting method based on spectrum, an unmanned intelligent device and application, a plurality of target grid regions are screened out through the pollutant influence similarity of every adjacent two grid regions, meanwhile, sampling redundancy of spectrum data and sampling omission of spectrum data are avoided, and the accuracy of pollutant concentration fitting of sampling spectrum is improved; a first similarity index between a blank grid region and a target grid region is obtained through the pollutant influence similarity of the blank grid region and the target grid region, the accuracy of reconstructed spectrum data of the blank region is improved, and the accuracy of pollutant concentration fitting of sampling spectrum is improved; the key target grid region is resampled through the reconstructed spectrum data of the blank grid region, a fusion fitting model is obtained based on direct inversion and indirect inversion, the interference on spectrum data is reduced, and the accuracy of pollutant concentration fitting of sampling spectrum is improved.

The invention discloses a current harmonic self-interleaving elimination control method and device for a common DC bus parallel grid-connected inverter, and the device comprises two same grid-connected inverter cabinets which are connected in parallel, and each parallel branch of the two grid-connected inverter cabinets is provided with a sensing filtering unit, a hysteresis comparison unit, and a PWM modulation unit. The method comprises the following steps of: simultaneously inputting the same current simulation given quantity into parallel branches respectively connected with two same grid-connected inverter cabinets which are connected in parallel, independently carrying out hysteresis control on each parallel branch, and finally driving the two grid-connected power cabinets to output current through sensing, filtering, hysteresis comparison and PWM (Pulse-Width Modulation) links, switching harmonics of output currents of the two grid-connected power cabinets are naturally distributed in a staggered mode due to the self-stabilization effect. The method does not depend on any synchronous or communication mechanism, and the current on the parallel branches of the two grid-connected inverter cabinets is automatically staggered and connected in parallel, so that the total harmonic distortion of the total grid-connected current is reduced, and the reliability is ensured while the system design is simplified.

The application discloses a method for analyzing the interaction of multiple grid-connected inverters based on matrix norm theory, and aims at the interaction between grid-connected inverters, takes a power distribution system containing two grid-connected inverters as an analysis object, establishes an equivalent grid-connected model containing two inverters based on the Norton theorem, derives a transfer function matrix of a control system, and quantitatively analyzes the relationship between the interaction between inverters and the system frequency, equivalent grid-connected inductance and controller combination mode based on the spectral norm and condition number of the transfer function matrix, so as to provide a reference for the coordinated control of the inverters. A simulation model is built in Matlab / Simulink for analysis. The application provides a simple and effective method for analyzing the interaction of inverters, and provides a theoretical method for the coordinated control of the inverters.

The utility model provides an arc extinguish chamber and a switch unit, and relates to the technical field of low-voltage electrical appliances, the arc extinguish chamber and the switch unit comprise an installation support and a first grid sheet group and a second grid sheet group which are arranged on the installation support, the first grid sheet group comprises a plurality of X-direction grid sheets which are arranged at intervals along the Y direction, the second grid sheet group comprises a plurality of Y-direction grid sheets which are arranged at intervals along the X direction, and the X-direction grid sheets are arranged at intervals along the Y direction. The X direction is perpendicular to the Y direction; at least one Y-direction grid piece is connected with any X-direction grid piece with the projection overlapped in the Z direction, the Z direction is the direction perpendicular to the grid piece face of the Y-direction grid piece, and an angle a is formed between the Z direction and the X direction. By arranging the two grid sheet groups with different arrangement directions, the number of the grid sheets can be increased under the same volume, and the arc extinguishing capability of the arc extinguishing chamber is improved; and the X-direction grid sheets and the Y-direction grid sheets are connected to form equal-phase connection, so that electric arcs can enter the grid sheets more easily, the breaking capacity of the arc extinguish chamber is improved, and the electric service life of the arc extinguish chamber is prolonged.

The utility model provides a reuse lattice of a cross belt sorting machine, which belongs to the technical field of parcel sorting, mainly aims at solving the problem that parcels are easy to fall into the lattice by mistake after the speed of the sorting machine is increased, and comprises a chute plate which is divided into a plurality of lattice falling sections A and B at equal intervals, two groups of fixed grid plates are arranged at the tops of the chute plates in each group of A + B intervals, and a swing arm grid plate is arranged between the fixed grid plates and comprises a rotatable rotating shaft, a grid plate baffle, a mounted bearing and a grid plate connecting piece; the swing arm grid opening can control the parcel sliding interval through resetting or the swing arm, so that the parcel can fall into the corresponding grid opening, each grid opening corresponds to two grid opening piece falling intervals, equivalently, the grid opening piece falling interval of the adjacent area is temporarily borrowed, the piece falling interval of the grid opening is doubled, and the probability that the parcel falls into the wrong grid opening is reduced.

The utility model provides a photovoltaic cell test piece and a photovoltaic cell test system, and relates to the field of photovoltaic technology. The test piece comprises a battery piece, a plurality of groups of welding strips and two grid line units, the number of each group of welding strips is two, and the two welding strips and the two grid line units are located on the two surfaces of the battery piece respectively; each grid line unit comprises a plurality of grid line structures, each grid line structure comprises a plurality of thin grid lines, and the arrangement direction of the plurality of grid line structures is perpendicular to the arrangement direction of the plurality of thin grid lines; each thin grid line is sequentially provided with a first section, a welding section and a second section, and in every two adjacent grid line structures, the first sections of the thin grid lines in one grid line structure and the second sections of the thin grid lines in the other grid line structure are arranged in an interdigitated mode; the welding sections of the fine grid lines in different grid line structures are different in structure; each welding strip is welded with the welding section of each thin grid line in the same grid line structure, and the positions of the two welding strips in the same group are the same. According to the photovoltaic cell test piece, the test workload is reduced.

The application discloses a line-shaped slope map spot extraction method and system with a width less than or equal to 1 grid and a storage medium, and relates to the field of land resource management. Firstly, spot points are generated in a slope classification map to obtain all boundary node coordinate information of a polygon, all coordinate point combinations are calculated according to the coordinate information, all points are compared with existing nodes, then rectangular spots with a side length of two grid widths or more are found and marked in the spot area, the above process is repeated until all spots are traversed, finally, spots with qualified rectangles are removed, and the remaining spots are line-shaped slope map spots with a width less than or equal to 1 grid. The application does not need to rely on complex polygon geometry width calculation, avoids large errors and low efficiency problems of manual visual interpretation, provides a reliable basis for subsequent merging of spots according to the average allocation principle, guarantees the quality of slope classification map results, and supports the scientificity and accuracy of natural resource management decision-making.

The invention provides a semiconductor structure and a preparation method thereof, a memory device and electronic equipment. The semiconductor structure comprises a first transistor arranged on one side of a substrate; the first transistor comprises at least two grid electrodes which are sequentially distributed at intervals in the direction perpendicular to the substrate; the semiconductor layer is provided with channel regions which extend along the direction vertical to the substrate and respectively correspond to the at least two grids; and a gate insulating layer disposed between the at least two gates and the semiconductor layer. According to the invention, the electric field of the drain terminal is reduced, the gate-induced drain leakage current is reduced, the retention time is prolonged, and the refresh frequency is reduced.

The invention provides an encoding method of a spherical equal-product hexagonal grid system, and relates to the technical field of geographic information system spatial data management, and the method comprises the steps: determining the grid resolution and hierarchy required by a target application scene based on icosahedron subdivision Snyder equal-product projection, and constructing a global discrete grid model; performing recursive and staggered seven-way tree subdivision on each triangular surface in the global discrete grid model to form a multi-level hexagonal grid system with approximately equal area; a binary code is distributed to each grid unit in the multi-level hexagonal grid system; and based on the binary codes, defining addition and subtraction operation rules between the grid codes, and calculating the relative displacement of the two grids in the space through the addition and subtraction operation rules of the codes. According to the technical scheme, the recursive hexagonal equal-product grid coding system with clear father-son affiliation can be adaptively constructed, and efficient space calculation and indexing are achieved through binary coding operation.

A grid framework structure includes a track system for a first type of robotic load handling device having a different sized footprint relative to a second type of robotic load handling device. A first portion includes first, second and third sets of parallel tracks to define a first set of grid cells with a first type grid cell opening. A second portion includes cells of the first set of grid cells and a second set of grid cells having a second type grid cell opening. Upright columns form vertical storage locations for storage containers A dimension of the second type grid cell opening is a multiple of the dimension of the first type grid cell opening. One or more of the second set of grid cells is neighboured by at least two grid cells of the first type of grid cells.

The invention relates to a divisible grid section for a grid boom, comprising two grid section parts that can be detachably connected to one another, which can be detached from each other for transport and can be slid into one another transversely to the longitudinal direction, wherein each of the grid section parts comprises two longitudinally extending corner posts which are firmly connected to one another via several diagonal and vertical bars and together with these define a side surface of the grid section, and at least two transverse connection structures firmly connected to the corner posts, wherein the grid section parts can be detachably connected via connecting means arranged on the transverse connection structures.According to the invention, the cross-connection structures each comprise at least two leg bars rigidly connected to an upper corner post of a lattice section and at least two leg bars rigidly connected to a lower corner post of the lattice section, which together with the respective corner post define an upper and a lower cover surface of the lattice section, wherein the upper and / or the lower cover surfaces are inclined relative to a plane perpendicular to the side surface towards the other cover surfaces, and their leg bars are connected via at least one longitudinal bar running parallel to the corner posts and preferably outside the cover surfaces. The invention further relates to a lattice boom with at least one lattice section according to the invention and to a machine with such a lattice boom.

The utility model belongs to the field of grid -connected cabinet technology especially relates to a photovoltaic grid -connected cabinet convenient to assemble, including grid -connected cabinet body, the front and back both sides of grid -connected cabinet body all are provided with the cabinet door, be provided with the baffle in the grid -connected cabinet body, two grid -connected cabinet body upper and lower arrangement set up, the inside upper side of below grid -connected cabinet body is provided with the plug -in rod, with the plug -in rod corresponding the grid -connected cabinet body in the upper side in the inside is provided with locking mechanism, the outside of below grid -connected cabinet body is provided with the elevating type moving mechanism. The utility model design is reasonable, simple structure, convenient processing and can realize the convenient addition of cabinet body, optimize the space planning of set -up position, improve the use functionality of equipment, mobile adjustment process is more convenient, reduces the operation difficulty, satisfies the use demand.

The invention discloses a geogrid and a manufacturing method thereof.The geogrid comprises a grid body, the grid body comprises at least two grid bars extending in different directions, and at least one drainage groove is formed in at least one side of each grid bar; wherein the two grid bars extending along different directions are respectively a first strip and a second strip, and the first strip and the second strip are crossed and overlapped to form a crossed node; the drainage grooves are formed in the side, at least back to the second strip, of the first strip, and the drainage grooves are formed in the side, at least back to the first strip, of the second strip. Compared with the prior art, according to the geogrid, the drainage grooves are formed in the grid bars, a directional and continuous drainage path can be achieved through the structure of the geogrid, water accumulated near the geogrid can be effectively collected, guided and drained, and the water content of a soil body is reduced.

A multi-specification automobile subframe shared logistics packaging assembly relates to the field of packaging appliances, including a tray, a fence arranged on the tray, a bottom plate arranged in the fence, at least two grids I and at least one grid II arranged in the fence and located on the bottom plate, and a cover plate covering the upper end of the fence; a plurality of clamping grooves are arranged on the grid I and the grid II; the grid I and the grid II are engaged with each other through the clamping grooves at different positions, forming a plurality of independent protection spaces. Different clamping grooves are combined together to form different independent spaces to protect the transportation safety of the products, and at the same time, a set of packaging appliances can be shared by multiple subframes, the packaging appliance standardization is realized, the packaging appliance investment is reduced, the packaging appliance investment cost is greatly reduced, and the packaging cost, the warehouse storage cost and the warehouse management cost are reduced.

Tree guard (1) comprising an elastically deformable grid mat (10) and at least one connecting element (20) for the detachable connection of two grid struts (21) such that the grid mat (10) assumes a substantially tubular, inherently stable design, wherein the grid mat (10) and the at least one connecting element (20) are made of renewable materials and are completely biodegradable.

The embodiment of the present application relates to the photovoltaic field, and provides a back contact cell, a laminated cell and a photovoltaic module, the back contact cell comprises: a substrate; a plurality of grid lines arranged along a first direction, the grid line is located on the substrate; a bonding pad located between two grid lines; a first connecting grid line and a second connecting grid line are arranged at intervals, the first connecting grid line and the second connecting grid line are located between two grid lines, and the first connecting grid line comprises a first grid line segment and a second grid line segment, the first grid line segment and the second grid line segment are located on two sides of the bonding pad along a second direction; the second connecting grid line comprises a third grid line segment and a fourth grid line segment; a third connecting grid line and a fourth connecting grid line, the third connecting grid line is located between the second connecting grid line and the grid line, the fourth connecting grid line is located between the third grid line segment and the fourth grid line segment, and two ends of the fourth connecting grid line are connected with the third connecting grid line and the second grid line segment; the width of the third connecting grid line is greater than the width of the grid line and greater than the width of the second grid line segment.

The invention relates to a space-time grid relation calculation method, system and device and a medium. The method comprises the steps that binary codes of two space-time grids in the longitude dimension, the latitude dimension, the height dimension and the time dimension are obtained; if the difference of the effective length of a certain dimension code is 1, judging an inclusion relation according to the effective length of a shorter code; if the coding effective length of a certain dimension is equal, judging the neighborhood relation according to the coding difference; if other three-dimensional codes are the same, the displacement relation is judged according to the ratio of the current dimension code difference to the scale unit. According to the method, a data conversion link between a space dimension calculation module and a time dimension calculation module is eliminated; and further comparing the hierarchical consistency, the displacement difference value and the inclusion relationship of the codes dimensionally one by one, combining the time-space relationship verification which needs to be executed step by step originally into a single coding analysis operation, and realizing one-step collaborative judgment of the space obstacle position and the time no-fly zone.

This application relates to a grid frequency regulation method, apparatus, device, and medium based on a shared DC bus. The method includes: acquiring grid frequency data of each grid connected to a target inverter device; determining, based on the grid frequency data of each grid, whether there is a grid with abnormal frequency in each grid; and, if an abnormal frequency grid is determined to exist, using the target inverter device to adjust the frequency of the abnormal frequency grid. The target inverter device includes one grid-connected inverter and at least two grid-connected inverters, which are connected via a shared DC bus. This method can improve the reliability of grid frequency regulation.

The present application provides a touch panel, which includes a first conductive grid layer, a second conductive grid layer and an insulating layer. The first conductive grid layer includes at least one first touch electrode and at least one first dummy electrode, each having a plurality of grids composed of conductive material. The first touch electrode and the first dummy electrode are electrically separated from each other, wherein at least two grids of the first dummy electrode have different shapes. The insulating layer separates the first conductive grid layer from the second conductive grid layer. In this way, the shape of the conductive grid in the non-functional area is irregular, which can avoid the moire problem caused by the regular pattern arrangement of the whole layer.

The invention relates to the technical field of semiconductor devices, in particular to an integrated SGT power MOSFET which comprises the steps that in the working state of the integrated SGT power MOSFET, self-adaptive adjustment is carried out on a grid voltage control signal, then at least two grid driving periods are divided, current establishing stages in the grid driving periods are divided, and the grid voltage control signal is output; and according to the magnitude of the source current and the grid voltage in the current establishment stage in the grid driving period, the grid voltage rate abnormal degree of the current establishment stage in the current grid driving period is obtained so as to adjust the voltage change rate of the current establishment stage in the current grid driving period. And obtaining the correction voltage change rate of the current establishment stage in the next gate driving period in the future. According to the invention, fine regulation and control of the conduction process of the power device can be realized under different load and thermal working conditions, and a reliable basis is provided for subsequent power device protection, service life prolonging and system stability.

The invention relates to a directional ion beam control device and method and semiconductor equipment, and the device comprises a screen grid electrode and an acceleration grid electrode which are arranged in parallel, and are respectively provided with a corresponding hole array for an ion beam to pass through; and at least one piezoelectric driver is arranged between the two grids and is used for changing the initial direction of the ion beam emitted from the accelerating grid hole, so that the ion beam is projected to a target position. The control method comprises the following steps: enabling the ion beam to sequentially pass through the screen gate hole and the acceleration gate hole, and changing the initial direction of the ion beam emitted from the acceleration gate hole between the two gates, so as to carry out directional control on the ion beam and project the ion beam to a target position. In the semiconductor equipment, the control device can be used for directionally controlling an ion beam, so that the ion beam is projected to a target position, and directional cleaning of a pressure control butterfly valve connected downstream is realized. Therefore, vector deflection control over the ion beam is achieved, the ion beam is precisely projected towards the target position in a directional mode, and the cleaning effect on the specific position of equipment is improved.

The invention discloses a special-shaped transparent heating element and a preparation method thereof, the special-shaped transparent heating element comprises a base material and a heating film arranged on the base material, the heating film comprises a plurality of heating channels connected in parallel, and the lengths and the widths of the heating channels are equal, so that the heating of the in-plane area of the heating film is uniform; the heating channels are formed by breaking lines, each heating channel comprises at least two grid lines connected in parallel, the base material is made of a high-temperature-resistant transparent material, the grid lines form a metal grid, the line width of the grid lines is 3-30 microns, and the metal grid is prepared through an imprinting process and forms an irregular grid pattern; according to the special-shaped transparent heating piece, through the design of the equal-length and equal-width parallel heating channels and the multiple grid lines, in-plane uniform heating is achieved, and local overheating and cold areas are effectively avoided; single-point fracture does not affect the function, and the reliability is remarkably improved; the ultra-fine metal grid ensures high light transmission and no moire fringes, and is suitable for complex shapes, and the preparation process is simple and efficient.

The utility model relates to the technical field of doors and windows, in particular to an electric aluminum grating, which adopts a connecting rod mechanism to drive each grating plate to swing, realizes synchronous driving of all grating plates, and is favorable for controlling actions of the grating plates. In addition, the driver is designed to perform the action of the connecting rod mechanism, so that the trouble of manual control is avoided, and the control intelligence is improved. Every two adjacent grating plates are matched with each other through the lapping edges and the sealing edges, all the grating plates can be closed more tightly in the closed state through the design, and the attractiveness and the sealing performance of the closed state are improved.

The invention discloses a linear slope pattern spot extraction method and system with the width smaller than or equal to one grid and a storage medium, and relates to the field of territorial resource management.The method comprises the steps that pattern spots in a slope grading graph are traversed to generate a pattern spot set, coordinate information of all boundary nodes of a polygon is obtained, all coordinate point combinations are calculated according to the coordinate information, and a linear slope pattern spot set is obtained; all point positions are complemented compared with existing nodes, then pattern spots with the side length equal to or larger than the width of two grids are searched and marked in a pattern spot surface domain, the process is repeated till all pattern spots are traversed, finally, pattern spots with rectangles meeting the conditions are removed, and the remaining pattern spots are linear slope pattern spots with the width smaller than or equal to one grid. The method does not need to depend on complex polygon geometric width calculation, the problems of large errors and low efficiency of manual visual interpretation are avoided, a reliable basis is provided for follow-up image spot combination according to the average assignment principle, the result quality of the gradient grading image is guaranteed, and scientificity and accuracy of natural resource management decision are supported.