16 results about "Two grid" patented technology

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.

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 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 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 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.

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.

This invention relates to the field of wastewater treatment technology, and provides a rural domestic wastewater treatment device and method. One of the rural domestic wastewater treatment devices includes a coarse filter box, a central shaft, grid plates, and intercepting nails. The coarse filter box has an open top, and the grid plates have an interception state and a waste discharge state. In the interception state, the central shaft slides below the grid plates, and the two grid plates form an inverted triangle with their openings facing upwards to intercept solid waste in the wastewater. The intercepting nails protrude from the grid plate surface to further intercept solid waste. In the waste discharge state, the central shaft slides above the grid plates, and the two grid plates form an equilateral triangle with their openings facing downwards to discharge the intercepted solid waste to both sides. The intercepting nails retract below the grid plate surface to avoid obstructing the discharge of solid waste. This technical solution solves the technical problem in related technologies where conventional wastewater treatment equipment, when applied to rural domestic wastewater scenarios, is prone to clogging of filter components by larger solid waste, leading to frequent cleaning and maintenance, and high maintenance difficulty.

The utility model discloses a kind of super high-rise trapezoidal skew grid structures, including two horizontal ring beams and the grid mechanism being arranged between two horizontal ring beams, grid mechanism includes a plurality of grid assembly and rhombus portion sequentially arranged along horizontal ring beam contour, grid assembly includes horizontal portion and the same number of first inclined column and second inclined column, a plurality of first inclined column and second inclined column are sequentially arranged alternately along the length direction of horizontal portion, first inclined column extends from below to above along first direction, and gradually close to adjacent second inclined column inclination, first inclined column and second inclined column are mirror image each other and set along the length direction of horizontal portion, wherein one horizontal ring beam, horizontal portion and adjacent first inclined column and second inclined column form first trapezoidal space;Rhombus portion is connected with two adjacent horizontal ring beams respectively along the two nodes of first direction, and the remaining two nodes are respectively connected to the horizontal portion of adjacent two grid assemblies, the utility model has good stress performance, without additional arrangement inclined support system.

This utility model relates to a noodle pressing machine, including a frame and a worktable. Two grid plates are vertically mounted on the worktable, and a fixed roller is rotatably mounted between the two grid plates. An adjustable roller is rotatably mounted above one side of the fixed roller via an adjustable bearing. A drive shaft is also rotatably mounted between the two grid plates, with a large sprocket mounted at one end and a small gear mounted at the other end. A large grooved wheel is rotatably mounted on one end of the fixed roller, and a small sprocket is mounted at the center of the outer side of the large grooved wheel. The small sprocket and the large sprocket are connected by a first chain drive. A fixed sprocket and a large gear are sequentially mounted on the other end of the fixed roller. An adjustable sprocket is mounted on the roller shaft on the same side of the adjustable roller. A noodle cutter is also movably mounted between the two grid plates, and a drive gear at one end of the drive shaft of the noodle cutter meshes with the large gear. This utility model is multi-functional, capable of pressing dough flakes and dough into sheet noodles, pressing thick sheet noodles into thin, resilient noodles, and pressing noodles that are elastic, smooth, and not easily broken.

This application relates to the field of mineral exploration prediction technology, specifically to a method and equipment for mineral exploration prediction in karst areas based on three-dimensional geological modeling. The method includes: constructing a three-dimensional geological model of the karst area; acquiring multiple ore-controlling feature data for each grid cell in the three-dimensional geological model; acquiring the comprehensive geological feature difference value of each grid cell; obtaining the difference distance between any two grid cells based on the distance between them and the average distribution level of the comprehensive geological feature difference value, which is used to cluster the grid cells; acquiring stable feature values ​​for each ore-controlling feature data, thereby obtaining the confidence coefficient of each ore-controlling feature data for each grid cell in the cluster; and predicting the mineralization probability of the area where each grid cell is located based on the multiple ore-controlling feature data and the corresponding confidence coefficients for each grid cell. This application can improve the accuracy of mineral exploration prediction.

The utility model provides a kind of welding positioning structure of grid plate, the welding positioning structure of grid plate includes first plate body and second plate body;The opposite two sides of the first plate body are equipped with corresponding first limiting boss, and corresponding two first limiting boss is equipped with positioning groove;The second plate body is worn in the positioning groove, and the opposite two sides of the second plate body are equipped with corresponding second limiting boss, and the second limiting boss is buckled with the first limiting boss connection.The utility model can position two grid plates to be welded, improve the precision and strength after welding.

The application provides a heat exchange device and an air conditioner. The heat exchange device comprises a heat exchanger and a water collecting mechanism. The water collecting mechanism is arranged at the bottom of the heat exchanger. The water collecting mechanism comprises at least two grid layers distributed along the height direction of the heat exchanger. The grid layer comprises a plurality of water collecting grids. The plurality of water collecting grids are spaced apart along a first direction to form an air inlet channel. The water collecting grids of any two adjacent grid layers are staggered. Through the arrangement, the water collecting mechanism can not only collect water through the water collecting grids, but also take in air through the air inlet channel. The air inlet function and the water collecting function are combined, an additional water collecting tray is saved, the space utilization is improved, the heat exchange device and the air conditioner are reduced in size, and the design is compact and small.

This utility model relates to a hand-protective noodle press, comprising a noodle press body driven by a drive motor. Fixed and adjustable rollers of the noodle press body are rotatably mounted between two grid plates. A noodle inlet hopper is installed at the upper entrance of the fixed and adjustable rollers between the two grid plates. A protective cover is installed between the top of the two grid plates, and an installation slot is formed between the two sides of the protective cover. An induction switch is installed in the installation slot. Support columns are connected to the bottom two side plates of the noodle inlet hopper, and support slots are formed opposite each other on the two support columns. A material blocking mechanism is movably installed between the two support slots. The material blocking mechanism includes a material blocking block, and sliders that can extend into and slide within the support slots are connected to both ends of the material blocking block. An electric push rod is fixedly installed on the top wall of the support slot, and the movable end of the electric push rod is connected to the sliders at both ends of the material blocking block. This utility model can detect when a hand enters the grid plates and control the drive motor to stop and the material blocking mechanism to stop the material, improving the safety of using the noodle press.

The utility model relates to the technical field of thread trimming machine, specifically disclose a kind of denim automatic thread trimming device, including processing box, isolation frame and closure door, the processing box inner chamber is equipped with isolation frame, and isolation frame is equipped with air suction component between processing box cooperation and installation, installation frame one is installed in the air suction component, multiple cutting parts are installed on installation frame one, adjusting component is installed on the installation frame cooperation, multiple grid plates three are evenly provided on the adjusting component, grid plate two is respectively installed in the left and right side walls of installation frame near opening, multiple grid plates one are evenly distributed in the bottom surface of the inner chamber of installation frame, and multiple grid plates one are located between two grid plate two;The utility model is cooperated between the above structure, the gap between grid plate three respectively in grid plate two and grid plate one is regulated, reach the effect of being able to adapt to different thick and thin lines, and then improve the applicability of device.

The application provides a full-coverage path planning method and system based on Dijkstra algorithm, comprising: two grid maps are established, one of which stores environment occupation information obtained by sonar detection, and the other of which marks whether it is visited; Boustrophedon motion visits the environment grid map and marks the visiting information; after Boustrophedon motion reaches the dead zone, the nearest backtracking point is found by using Dijkstra algorithm, if the backtracking point is found, the backtracking path is smoothed; if the backtracking point is not found, the planning is ended; according to the smoothed backtracking path, the underwater robot is controlled to move to the backtracking point, and then the second step is entered. The application introduces Dijkstra algorithm to search the backtracking point with uncertain position, and the first backtracking point found by the algorithm is the best backtracking point; the application does not need to find all backtracking points to determine the best backtracking point, and the searching method of the best backtracking point is optimized.

The utility model discloses an anti-impact SJ MOSFET device, include: epitaxial layer, epitaxial layer longitudinal is equipped with at least two first conductive type column and at least one second conductive type column, and first conductive type column and second conductive type column interval arrangement, at least two grid grooves, grid groove is located respectively on epitaxial layer and is located on first conductive type column upper portion correspondingly, and the bottom of grid groove is equipped with grid bottom oxide layer, and the sidewall of grid groove is equipped with grid side oxide layer, and the thickness of grid bottom oxide layer is greater than the thickness of grid side oxide layer, the utility model discloses an anti-impact SJ MOSFET device can reduce junction capacitance, promotes the anti-impact ability of device, and then promotes the reliability of device.