186results about How to "Reasonable division" patented technology

The invention reveals a topological map building method of a mobile robot, comprising the following steps: S1: building a current region according to environmental information of current position of a mobile robot; S2: judging whether the current region accords with the sub-region division condition; entering S3 if the current region accords with the sub-region division condition; and entering S4 if the current region does not accord with the sub-region division condition; S3: dividing the current region into at least two sub-regions which contain the sub-region of current position and are connected through a boundary, and then entering S5; S4: considering the current region as the sub-region of the current position, and then entering S5; S5: building a local map at the sub-region of the current position and storing; S6: judging whether there exists a sub-region without local mapping, entering S7 if yes, and entering S8 if not; S7: letting the mobile robot move to the sub-region without local mapping, updating information of the current position and returning to S1; and S8: building a topological map with the sub-region as the node and the boundary as the edge. In addition, the invention also discloses a navigation method of the mobile robot based on the topological map.

The invention discloses a video keyframe extraction method, which comprises the steps of: using a ViBe algorithm fused with an inter-frame difference method to perform moving object detection on an acquired original video sequence, so as to obtain a key video sequence containing a moving object; performing keyframe crude extraction on the key video sequence by using a global characteristic peak signal-to-noise ratio to obtain candidate keyframe sequences; and establishing global similarity of the candidate keyframe sequences by using the peak signal-to-noise ratio, establishing local similarity of the candidate keyframe sequences by using SURF feature points, and performing weighted fusion on the global similarity and the local similarity to obtain comprehensive similarity, performing self-adoptive keyframe extraction on the candidate keyframe sequences by using the comprehensive similarity, and finally acquiring a target keyframe sequence. The video keyframe extraction method providedby the invention can effectively extract the video keyframes, obviously reduce the redundant information of video data, and express the main content of the video concisely. Moreover, the video keyframe extraction method has low algorithm complexity and is suitable for real-time extraction of keyframes of surveillance videos.

The invention discloses a method for multi-user dispatching transmission based on 3D-MIMO codebook design. The method comprises the steps that an even flat board array is adopted by a base station antenna, a direct product codebook for 3D-MIMO is adopted, a horizontal codebook in the direct product codebook is a DFT codebook, and a vertical codebook is obtained through space division; the codebooks are grouped according to basic beam directional diagrams corresponding to codons in the direct product codebook, and the limiting feedback quantity is calculated by users according to the codebook grouping condition and a channel estimation result and is fed back to a base station through a feedback channel; the users are paired and dispatched by the base station according to the limiting feedback quantity of the users and multi-user transmission is conducted. Compared with a two-dimension codebook, a traditional three-dimensional DFT direct product codebook and multi-user transmission methods of the two-dimension codebook and the traditional three-dimensional DFT direct product codebook, the use rate of a system frequency spectrum and the handling capacity performance are improved.

The invention relates to an intelligent automobile engine cooling system. A cooling control device compares control instructions provided by a CPU (central processing unit) by collecting and processing signals to regulate a variable water pump and a speed-governing fan according to variable indexes such as water temperature of a water circulation system inside an automobile internal-combustion engine, rotation speed of the internal-combustion engine, torque and the like; an electronic control device taking a single chip microcomputer as a core conducts the determination on work conditions according to information fed back by a sensor, and automatically regulates and controls the temperature and the flow of a coolant through the variable water pump and the speed-governing fan so as to ensure that the engine works in an optimal temperature state; and special-purpose software that is developed by a digital simulation technique and experiments can monitor operation conditions of the internal-combustion engine at the right time, and analyze, compare, compute and control water amount and air amount. The intelligent automobile engine cooling system has the advantages of reducing the fuel consumption, improving the economy of the engine, lowering abrasion and prolonging the service life.

The invention relates to a method for distribution system planning and particularly relates to a distribution network power supply area division method based on comprehensive evaluation. The method comprises the following steps: first, a power supply area to be divided is selected, the status of the power supply area and main factors influencing power supply area division are analyzed and an evaluation index system for power supply area division is established; then, an appropriate method is selected to set weights of evaluation indexes and evaluation standards; and finally, comprehensive evaluation is carried out to determine a division result of the power supply area. The method overcomes the defect that the prior method carries out qualitative classification only based on experiences of experts or leaders. Based on factors influencing distribution network power supply area division, a comprehensive evaluation method is fully utilized and the defect that power supply area division can only be carried out on the basis of quantitative indexes in a clustering analysis method is overcome. The power supply area can be comprehensively evaluated, the weights of the indexes can be adjusted according to actual situations of various regions, the accuracy of the method is greatly improved, and the method has very high engineering application values.

The invention discloses a Stackelberg game-based resource allocation method. According to the method, the interference of a cellular and femtocell-coexisting and spectrum-shared two-layer network is analyzed and managed; graph theory knowledge and the game theory are adopted to allocate resources used by users in femtocells and a macro base station, so that the quality of services for the users can be ensured. The method includes the following steps that: a graph theory-based clustering algorithm clusters the femtocells and sequentially allocates channels for macro users, and then matches the macro users with femtocell clusters so as to realize channel sharing; and a femtocell transmission power and macro user access selection-combined Stackelberg game is established, and the expression of the transmission power of the femtocells when Nash equilibrium is achieved is derived, and appropriate access strategies are selected for the macro users according to the transmission power of the femtocells, and iteration is repeated until Stackelberg game equilibrium is achieved, and network resource allocation is updated according to strategies which are selected when the equilibrium is achieved.

The invention discloses a static clustering algorithm for a wireless sensor network, which belongs to the technical field of wireless sensor networks. The algorithm is applied to topology control of the wireless sensor network, and is different from the conventional network clustering algorithm. In the algorithm, clusters are partitioned firstly through convergent nodes, and a current turn of cluster head is used for electing a next turn of cluster head. The executing process of the algorithm is periodical, and is partitioned into a cluster partitioning stage, a cluster head selecting stage and a stable data communication stage when a network is established or a large quantity of nodes are added or leave the network, and only the last two stages are performed in the rest of periods. Compared with the conventional hierarchy topology, the algorithm has the advantages that: energy consumption in a network deployment process can be lowered, hierarchical division is more reasonable, and the service life of the network can be effectively prolonged.

The invention relates to a multi-wire cutting machine. A machine body of the multi-wire cutting machine consists of a base and an upright post as a whole. The front area of the upright post at the front of a machine tool is a cutting area; a frame is fixedly installed at the back of the upright post; the middle part of the frame is an area managing water, gas, plasma and electricity; wire management areas are in the frames on the two sides of the area managing water, gas, plasma and electricity; and a regulator cubicle is arranged outside the body, and is connected with the wiring terminal of the area managing water, gas, plasma and electricity. The areas of the invention are divided reasonably, the structure is compact, the space structure is fully and effectively utilized, and the operation area is independent and safe. The forefront wire cutting area is designed into an arc shape for convenient operation; the wire management areas are on the two left and right sides of the body, the less third wheel, the safer, and steel wires can carry out automatic reciprocating operation with periodic duty. The area managing water, gas, plasma and electricity is at the back of the cutting area, the control units of water, gas, and plasma are arranged therein, the operation and the maintenance are convenient, an operator can operate wherever in the operation area, and the operation is convenient.

The invention discloses a turbo generator set vibration fault diagnosis method based on forward reasoning. After a diagnosed turbo generator set starts, a parameter detection device is employed to carry out real-time detection on related work parameters in a start and operation process of the diagnosed turbo generator set and synchronously sends the detection information to a vibration fault diagnosis device for automatic vibration fault diagnosis, vibration faults of the diagnosed turbo generator set are diagnosed level by level by the vibration fault diagnosis device according to the detection result transmitted by the parameter detection device in combination with the active power value of the diagnosed turbo generator set, and the fault diagnosis process comprises steps of 1, shaft vibration swinging value diagnosis; 2, start process vibration fault diagnosis; 3, zero load operation vibration fault diagnosis; and 4, loaded operation vibration fault diagnosis. The method is advantaged in that the steps are simple, and the method is reasonable in design, is convenient to realize, has good use effects, can conveniently and rapidly accomplish the online steam turbine vibration fault diagnosis process and can further realize accurate and reliable diagnosis results.

The invention discloses a method for controlling drive modes of a four-wheel drive strong hybrid automobile, belonging to the field of strong hybrid automobiles. The method comprises: a strong hybrid automobile comprises an engine, an electric generator and a drive motor, wherein the engine and the electric generator are arranged on a front shaft in parallel, and the drive motor is arranged on a rear shaft; the drive modes are as follows: 1) an initialization mode, 2) a pure motor drive mode, 3) a serial hybrid drive mode and 4) a four-wheel drive mode; and when a corresponding condition is satisfied, the corresponding mode is controlled to be started. The invention has the following beneficial effects: by arranging the engine and the electric generator on the front shaft in parallel to form parallel hybrid and then arranging the drive motor on the rear shaft to form a strong hybrid system, the four-wheel drive can be realized under the ice-snow, sloppy and other atrocious road conditions or extreme road conditions, and the trafficability of the automobile is improved; and since the drive modes comprise the initialization mode, the pure motor drive mode, the serial hybrid drive mode and the four-wheel drive mode and are reasonably divided, the energy utilization efficiency of the automobile is effective improved and the energy consumption of the whole automobile is saved.

A region division method and device relate to the field of computer technology. One embodiment of the method includes: obtaining position information of each target unit region covered by an object region to obtain a first data set; acquiring a prediction value of predetermined index data corresponding to each target unit region within a specified period of time to obtain a second data set; clustering a target unit region based on the first data set and the second data set; dividing the object region i based on the result obtained by the clustering to obtain a plurality of sub-regions. The embodiment makes the division of regions more reasonable, which is conducive to improving the efficiency of regional management.

The invention relates to the field of geological exploration, in particular to a method for dividing stratum structures of a mining area. The method comprises the following steps of drilling multiple wells in the mining area, extracting a core sample from each well and acquiring a logging curve; dividing the mining area into multiple subareas according to a geological structure and depositional setting; analyzing the extracted core samples and the logging curve according to sequence cycle standard in a sequence stratigraphy principle, classifying the stratum structures of the wells from which the core samples are extracted, and determining a marker bed and a boundary mark among the marker beds; determining a standard well in each subarea, and adopting the stratum structure of the standard well in each subarea as the stratum structure of the subarea; unifying the stratum structures of all standard wells; and integrating the stratum structure of each subarea, and establishing a stratum structure layout chart of the entire mining area. The core samples are analyzed by utilizing the sequence cycle standard, so that the stratum structures are more reasonable to divide, and the diachronous phenomenon is avoided.

An embodiment of the invention provides a cache allocation method and device. The cache allocation method comprises determining the preset lengths which are not less than the cache lengths which need to be allocated in different preset lengths; determining the smallest preset length in the determined preset lengths; determining sub-cache blocks which are corresponding to the smallest preset length and idle in use state in allocated sub-cache blocks and allocating the determined idle sub-cache blocks, wherein the same cache block is divided into the plurality of sub-cache blocks which are equal in length based on the different preset lengths. Compared with the prior art, the problem that the fixed size of sub-cache blocks are allocated no matter caches needing to be allocated are large or small is solved and accordingly the cache utilization is improved and the division and the allocation of the cache blocks can be reasonable. The cache allocation method and device relates to the computer technical field.

The invention discloses a mobile edge computing unmanned aerial vehicle group auxiliary communication method for explosive traffic, which is responsible for providing computing service for users withcomputing requirements on the ground when a network is congested. Firstly, in the prediction part, an improved PSO-BP neural network is used for predicting the calculation demand distribution situation of a target area, and unmanned aerial vehicles supporting mobile edge calculation are deployed as required; secondly, a demand partitioning part is calculated, a target area is partitioned based ona fairness principle, and each unmanned aerial vehicle serves users in a sub-area; and finally, the unmanned aerial vehicle energy optimization part in each sub-region performs joint optimization on the unmanned aerial vehicle calculation frequency and the unmanned aerial vehicle flight path on the premise of meeting the user calculation requirement, so that the energy consumption of the unmannedaerial vehicle in each sub-region is minimum, the energy consumption of the whole unmanned aerial vehicle group is minimum, and the service time of the unmanned aerial vehicle group is prolonged.

The invention relates to the technical field of complex grain image segmentation, in particular to a segmentation method for an adhering grain binary image. The segmentation method comprises the following steps: 1, extracting a skeleton of a target object for a binary area target; step 2, defining a boundary distance function of the skeleton in an Euclidean space; step 3, figuring out a minimum point, namely valley point, of the boundary distance function of the skeleton; and 4, taking the valley point as a center to segment the target object according to the minimum difference quotient of the area boundary distance function. The method provided by the invention facilitates segmentation of an adhering target area object in a binary image and has good antijamming capability.

The invention discloses a plant protection operation method based on lidar surveying and mapping, which comprises the following steps: an airborne lidar and a photographing device perform reciprocating scanning on a target region, original 3D point cloud data and image data are acquired, and the original 3D point cloud data and the image data are uploaded to a server; the relative position information between an RTK and the lidar is acquired, the server corrects the original 3D point cloud data according to the relative position information, and corrected 3D point cloud data are generated, wherein the feature points in the corrected 3D point cloud data carry RTK coordinate information. According to the plant protection operation method based on lidar surveying and mapping, the surveying and mapping result can be repeatedly extracted and used, surveying and mapping again in an operation block in the same region are not needed, and the plant protection operation can be carried out directly without relying on a base station; and the operation range of an unmanned aerial vehicle can be accurately segmented, task dispatching and distributing are completed, and the operation efficiency is ensured.

The invention discloses a link resource management method, the core idea of ​​which is to reserve the link resource according to the group to which the resource request object belongs, and according to the policy that the objects in the same group share resources as much as possible. In the present invention, the path calculation unit that performs reserved path calculation can be distributed and configured on each network edge device; it can also be centralized, and at this time, the update of resource reservation information also needs to be released to the centralized path calculation unit . The present invention also provides a transport network and related network equipment applied to the method, including network edge equipment and path calculation units. Since the present invention performs shared processing on the reserved resources according to the determined object groups, the objects can be grouped according to the actual characteristics, and the divided shared resources can be fully utilized, so that the division of link resources is more reasonable and accurate, and the transmission network can be improved. Resource utilization, improving operator benefits and correspondingly reducing the effect of business user expenditures.

The invention provides a method for classifying railway track stations based on characteristics of a public transportation connection radiating area. The method comprises the steps of collecting cardreading data which forms a transfer behavior, analyzing the characteristics of the public transportation connection radiating area according to an identified transfer behavior, counting characteristicparameters of the public transportation connection radiating area, carrying out normalization and standardization on the selected characteristic parameters, classifying the railway track stations byusing a k-means clustering method, and finally quantitatively evaluating the classified stations by using a fuzzy element theory. According to the method, from an actual angle and a transfer need angle, the railway track stations are reasonably divided, and a certain reference value is provided for rail transit planning and operation optimization.

The invention discloses an AVS (Audio Video Standard) intra mode decision device, comprising an intra mode decision scheduling control module, an intra prediction module, a rate-distortion cost calculation and mode decision module and an intra mode decision output module. The intra mode decision scheduling control module is used for controlling a series of processing flows, such as input, command control, function scheduling and data output of the intra prediction module, the rate-distortion cost calculation and mode decision module and the intra mode decision output module; the intra prediction module is used for generating the corresponding prediction data in each mode of each data block so as to enter a rate-distortion optimization flow line, and the intra prediction module performs intra prediction by reconstructed data; the rate-distortion cost calculation and mode decision module is used for calculating the rate-distortion cost of each mode, simultaneously performing intra mode decision and outputting the result to the intra mode decision output module; and the intra mode decision output module is used for outputting the mode information of the optimal mode, the reconstructed data and the entropy coding information. Meanwhile, the invention also discloses an AVS intra mode decision algorithm.

The invention discloses an electric-vehicle recharging station planning method. The method comprises the following steps: 1) using recharging station annual-running-income maximization as an objectivefunction to establish an electric-vehicle recharging station planning model; 2) analyzing electric-vehicle recharging power demand in a planning area; 3) introducing weights of a weighted Voronoi diagram to analyze recharging station service regions; 4) utilizing a particle swarm optimization algorithm for solving of optimal values of recharging station planning, and simulating optimization selection of various charging station planning schemes through using continuous optimization processes of particles characterizing recharging station positions and capacity. According to the method, the weighted Voronoi diagram is used to solve the established optimization model, the defects of conventional optimization algorithms on service region division and load rate control are overcome, service region division of each recharging station in a planning scheme is enabled to be more reasonable, load rates are also more balanced, and maximum income of recharging station site selection and capacitydetermination taking into account double silver influences of a power network and a transportation network is realized.

The invention provides a rail station classification system. Card swiping data which forms a transfer behavior is collected, characteristics of a bus transferring radiation area are analyzed accordingto an identified transfer behavior, characteristic parameters of the bus transferring radiation area are arranged, normalized and standardized, a k-means clustering method is used to classify the rail stations, and a fuzzy metatheory is used to evaluate the classified stations quantitatively. The method is used to classify the rail stations reasonably from the aspect of practical transfer demands, and provides certain reference values for planning and operation optimization of rail transit.

The invention discloses a land rectification method for coal mining subsidence areas in plain areas. The method includes 1, treatment region division; according to the spatial distribution features of earth surface distribution curves, dividing the earth surface moving basin into four treatment regions, namely an edge region, a side slope region, a slope base region and a basin base region from exterior to interior; 2, segmented region treatment; treating the edge region by a field internal flattening method, treating the side slope region by the field internal flattening method when the slope angle of the side slope region is smaller than 5 degrees and treating by a level terrace method when the slope angle of the side slope region is not smaller than 5 degrees, treating the slope base region by the field internal flattening method, and treating the basin base region by the method combing intercepting ditches and pumping stations. The method of 'segmented treatment and partial optimization' is adopted, the steps are simple, design is reasonable, implementation is facilitated, treatment effect is fine, and the earth surface moving basin of the plain area caused by coal mining can be treated effectively.

The invention discloses a service method, a device, a system, a certificate terminal and a medium for conveniently obtaining certificates. The method comprises the following steps: obtaining the identity information of a certificate obtaining person; Judging whether the business application of the card handler is the first application for the certificate according to the identity information of the card handler, if so, sending the video examination request of the card handler to the background service equipment, if not, performing subsequent business application operation; When receiving the consent instruction sent by the background service equipment, accepting the video audit of the card handler; After completing the video audit of the licensing personnel, sending the instructions by thebackground service equipment are received, and if the instructions sent by the background service equipment are the approval application instructions, carrying out the subsequent business applicationoperation. The invention can realize the interconnection of the intelligent certificate handling terminal and the background service equipment, cooperate to realize the seamless connection of the face-to-face meeting and the auditing link, and ensure that the whole business process and the result can comply with the law and be foolproof.

The invention relates to the field of oil-gas field development, in particular to a high water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method which comprises the following steps: S1, collecting and tidying block geology and related development data; S2, applying the mathematical modeling analogy method to obtain a layered development index;S3, carrying out optimization on the water-consuming layer belt evaluation index to divide the level of the high water-consuming layer belt; S4, by combining with the development situation, screeningthe water injection adjusting and controlling horizon according to the level of the water-consuming layer belt to optimize the unit layered water injection; and S5, tidying the optimizing result to perfect the layered water injection adjusting and controlling scheme so as to carry out site implementation. According to the high water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method, the level of the high water-consuming layer belt is distinguished and divided through the classifying coefficient of the high water-consuming layer belt; for different levels of the high water-consuming layer belt, the water flooding development index calculating method of the oil reservoir engineering theoretically established is combined with the optimal segmentation method theory, so that water consumption is reduced, and the economic life period of an oilfield is prolonged to finally realize the purpose of improving the oil reservoir recovery efficiency.

The invention provides a multi-channel remote signal test device for a ring network cabinet and a test method thereof, and relates to the technical field of remote control signal test. The multi-channel remote signal test device for the ring network cabinet comprises an analog switch module A, an analog switch module 101, an analog switch module 102 and an analog switch module B. The multi-channel remote signal test method for the ring network cabinet comprises the steps of firstly, accessing a tester to the remote control loop of a ring network cabinet DTU; secondly, testing an initial state; thirdly, testing the state; fourthly, capturing and self-maintaining multi-channel remote signals; fifthly, recording a test result and checking the result. According to the invention, the device realizes the multi-channel test and four intervals can be continuously operated. Repeated confirming links are eliminated. Meanwhile, when one part inside the ring network cabinet or the switching-on outlet of the ring network cabinet is in wrong connection, the wrong connection can be directly reflected by the device. Therefore, the field test personnel can check and repair the wrong connection conveniently. Meanwhile, the wiring number is reduced through the standardized primary wiring operation by the device, so that the influence of human factors is reduced to the lowest.

The invention relates to a layered strip mining method for a gently inclined ore body. According to the technical scheme, the mining method aims at the gently inclined ore body, and comprises the steps of ore block division and layout of stope preparation cutting, blasting, ventilation, mining and filling and transporting. The step of ore block division is that different panels are divided at eachstage, the panels are arranged along the ore body trend, a stage transportation roadway is excavated along the ore body trend, and the same number of ore rooms are divided on the left and right sideswith a floor rise in the middle of each panel as a boundary. Mining and filling have three steps that 1, ores in the upper layers of the ore rooms are stoped; 2, ores in the lower layers of the ore rooms are stoped; and 3, after the ore rooms are subjected to cemented filling, inter-columns in the panels are stoped, and the inter-columns are subjected to cemented filling after stoping. In the panels, the stoping of the step 1 and the stoping of the step 2 are sequentially conducted from top to bottom, and the principle of stoping every other ore room is strictly met; and after the mining of asingle ore room is completed, the approach road of the floor rise is closed, the ore rooms are filled by the approach road of a roof rise, after the ore rooms in a single panel are all mined and filled, the inter-columns in the panels are stoped, the mining mode is that mining is conducted from top to bottom, and filling is conducted after mining. The layered strip mining method has the characteristics that the mining cost is low, the ore stoping rate is high, and the mining efficiency is high.

The invention claims a method for selecting a subinterval of near-infrared spectrum wavelength based on a simulated annealing algorithm for analyzing the quality of farm products or foods, which comprises the following steps: performing pretreatment on the near-infrared spectrum and dividing the full spectrum of the near-infrared spectrum subjected to pretreatment into k subintervals; selecting the optimal number of characteristic subintervals and the combination mode thereof by using the simulated annealing algorithm, and then increasing the number of subintervals progressively; repeating the simulated annealing algorithm and then comparing the global optimal characteristic subinterval combinations obtained from the optimal characteristic subinterval combination in various interval division modes when finishing; and finally establishing a correction set model and a prediction set model. Apart from scientific and rational division of spectrum sub-intervals, the method has the advantages of ensuring the rapid convergence of algorithm, avoiding the problem that the algorithm only realizes the local optimal solution by judging the importance of the newly selected subinterval according to Metropolis rule, reducing the calculated amount for modeling, accelerating modeling and obtaining the high-quality near-infrared spectrum model quickly on the premise of obtaining the global optimal solution.

The invention discloses a method for dividing three decision communities based on random walk boundary domain processing. The method comprises the following steps: 1) obtaining an abstract network; 2)clustering and granulating that abstract network after initial granulation, dividing the abstract network into a plurality of divided communities, the structure relationship of the divided communities being taken as a first dividing result; 3) obtaining that first partition result of the abstract network corresponding to the maximum value of the module degree of the overlap community; 4) dividingall nodes in that boundary region by using a random walk algorithm; 5), for each node in the updated boundary region, by using a three-branch decision method, processing to obtain a second partitionresult, the second partition result being taken as a target partition result. The invention discloses a device for dividing three decision communities based on random walk boundary domain processing.The application of the invention can improve the precision of the community division, thereby facilitating the analysis and understanding of the network structure, and facilitating the optimization and management of the network.

The invention discloses a digital twin city multi-scale space grid coding method and device, and the method comprises the steps: carrying out the spatial subdivision of a digital twin city space to obtain a unit space grid with the same size as a preset minimum space grid; taking the unit space grid as an initial level, iteratively amplifying the unit space grid according to a preset amplificationfactor to form space grids of different levels; and encoding the spatial grid of each level to generate a grid code of the spatial grid. Compared with the prior art, the spatial grids of multiple levels are generated and the grids of all levels are coded correspondingly, the boundary of each dimension can be reasonably given, the situation that grids do not meet the precision requirement or dataredundancy is too large due to fixed bitwise distribution is reduced, the dividing mode of the space grids is more reasonable and regular, and the method has more advantages in three-dimensional spacedisplay and three-dimensional space analysis.