179results about How to "Rapid refactoring" patented technology

The invention provides a reconstruction method and system for unmanned-aerial-vehicle formation communication topology based on a minimum arborescence. The reconstruction method includes the steps that broadcast communication channels are monitored, and whether communication failure of an unmanned aerial vehicle in a formation appears or not is judged; when communication failure of the unmanned aerial vehicle appears, a formation communication diagram is modified according to the model of the communication failure; a minimum arborescence of the modified formation communication diagram is calculated, and according to the calculated result, the unmanned-aerial-vehicle formation communication topology is reconstructed. When the communication failure of the unmanned aerial vehicle appears, the formation communication diagram is modified according to the model of the communication failure, the minimum arborescence of the modified formation communication diagram is calculated to reconstruct the unmanned-aerial-vehicle formation communication topology, and it is achieved that after the communication failure is detected, the communication topology is rapidly reconstructed so that UAV collision accidents are avoided, and a formation pattern is recovered.

The invention discloses a low-cost reconstruction method for phase current of a permanent magnet motor of a fan. The low-cost reconstruction method includes that in a Space Vector Pulse Width Modulation (SVPWM) control process for the permanent magnet motor, when the rotational speed of the motor is higher than a rated rotational speed by 5%, a reference voltage vector is prevented from being in a low-modulation area; when the reference voltage vector is in an unobservable area, the position of a voltage vector process and obtained by a microcontroller of the motor when the microcontroller of the motor is withdrawn from an effective solvable area at a previous moment replaces the position of the reference voltage vector which is just in the unobservable area, and the magnitude of the current reference voltage vector keeps unchanged so as to solve problems caused by insufficient action time of each nonzero basic voltage space vector when an existing reference voltage vector is in a low-modulation area and an unobservable area; and the reference voltage vector in the low-modulation area or the unobservable area is switched into the effective solvable area, so that the phase current of the motor is reconstructed by a single-resistance sampling bus direct-current process. The low-cost reconstruction method has the advantages of simplicity, practicality, high reconstruction speed and suitability for meeting application requirements of low-cost household electrical appliance products.

The invention discloses a method for reconstructing multi-spectral information calculation based on principal component analysis. The method comprises the following steps of: 1, acquiring two paths of multi-spectral images; 2, performing principal component analysis on the spectral information of sampling points of the multi-spectral images to obtain a principal component spectral vector basis; and 3, reconstructing the spectral information on the unknown spectral points according to the principal component spectral vector basis, red, green and blue (RGB) vectors which are acquired by a camera, an R channel integral curve of the camera, a G channel integral curve of the camera and a B channel integral curve of the camera. By the method, multi-spectral information can be more simply and more quickly reconstructed; the required scene spectral sampling points are few; and principal components of the multi-spectral information can provide instructive significance for related research.

The invention relates to a reconfiguration method of a control module of a reconfigurable digital controller in the technical field of computer digital control, including the following steps: step 1, establishing a topological structure of equipment; step 2, setting up a topological structure of an autonomous domain; step 3, adopting a configuration system software to fulfill reconfiguration; the reconfiguration includes the following steps: (1) a user inputs task information and the topological structure of the autonomous domain into a GUI module and sends the task information and the topological structure to a task controller module; (2) the task controller module includes a task interpretation module and a state decision module, the task interpretation module can interpret information into a data type, which can be identified by a motion controller and an I/O controller according to stated syntax rules; the state decision module controls the concrete behavior and the process of the motion controller module according to the principle of a finite state machine; (3) the task controller module sends motion instruction to the motion controller module and the I/O controller module so as to control the motion of a motor, thus fulfilling the task of reconfiguration. The method of the invention can ensure that the controller can realize the fast reconfiguration of the control module according to different processing tasks.

The invention is suitable for the field of virtual reality, and particularly relates to an indoor three-dimensional modeling method and device. The method comprises the following steps that: collecting an unmanned aerial vehicle locating point, and constructing a local three-dimensional map according to the unmanned aerial vehicle locating point; shooting an indoor image, and generating a partially visible three-dimensional model according to the indoor image; according to the partially visible three-dimensional model, calculating an integral three-dimensional model through pattern classification; according to the integral three-dimensional model and the local three-dimensional map, calculating an action path; driving the unmanned aerial vehicle to move automatically according to the action path, and calculating the three-dimensional model of a next region. In the embodiment of the invention, through a way of the automatic movement of the unmanned aerial vehicle and automatic surveying and mapping as well as modeling, users can more quickly carry out three-dimensional model reconstruction on a great quantity of buildings. In addition, manual surveying and mapping as well as modeling can be avoided so as to save human cost and improve the convenience of three-dimensional modeling.

The invention discloses a virtual connection supporting real-time embedded gateway based on a controller area network (CAN) bus and Ethernet. The real-time embedded gateway comprises hardware, a supporting module and a virtual connection module. A plurality of embedded development boards simultaneously with CAN bus interfaces and Ethernet interfaces are adopted, and are connected by the CAN bus to form a virtual connection service supporting trunking system. The supporting module of the gateway consists of a driver, a mu c-OS II operating system and a light weight Internet protocol (LWIP) protocol stack. The virtual connection module comprises a virtual connection protocol sub-module and a virtual connection state sensing sub-module, and is used for finishing actual virtual connection forwarding and maintenance work. The real-time embedded gateway has the advantages of configuration flexibility, high adaptability, high extensibility, low energy consumption and the like, and is applied to data acquisition and transmission systems of relatively larger scales.

The invention provides simulation architecture suitable for performance evaluation of a satellite communications network. The simulation architecture comprises a database module, a scene configuration module, a scene display module, an index configuration and calculation module, and a result display and output module. The database module provides database connection, database reading and database storage functions. The scene configuration module is used for configuring scenes participating in simulation evaluation. The scene display module is used for displaying the scenes participating in the simulation evaluation. The index configuration and calculation module is used for selecting current scene simulation evaluation indexes, configuring required parameters for each index, and calculating the indexes by using a corresponding algorithm. The result display and output module is used for reading each scene simulation evaluation result stored in the database module, performing statistic display on each index result of each evaluation, and outputting a simulation result. The simulation architecture provided by the invention can effectively improve the performance evaluation and system optimization ability of the satellite communications network.

The invention discloses a satellite link intermittent and delay simulation method, which relates to the technical field of network simulation and effectively solves the problem of intermittent and delay simulation of satellite links in satellite network simulation. The method includes the following steps: integrating OpenStack and an STK to construct a satellite network simulation platform; constructing a satellite communication network in the STK, and enabling the satellite network topology, the continuous communication time of the link and the link length to form an XML configuration file; loading a satellite network topology configuration file in a control node, automatically deploying a virtual satellite network, simulating a multi-granularity satellite node according to the height ofa satellite orbit, and initializing the satellite link state; and loading the configuration file of the continuous communication time of the link and the link length in a computing node, and real-timely detecting and dynamically switching the satellite link state and delay. The invention provides the satellite link intermittent and delay simulation method, which can be used for scientific researches of different satellite network scenarios.

The invention provides a composition, preparation and an appliance of a neural unit spherical support, wherein a large number of channels are distributed in the neural unit spherical support, and is of a space structure which radiates from the center to the periphery, a center hole is communicated with all channels, the diameter of the neural unit spherical support is 500-2000 Num, the diameter of the channels in the inner portion of the neural unit spherical support is 20-100 Num, and stem cells and vascular endothelial cells are arranged in the channels. The neural unit spherical support can achieve the multiple purposes of effective filling of nerve defect areas and rapid reconfiguration of local neural network and microvessel and the like after being transplanted, thereby achieving the effect that the functions of the nerve defect areas rapidly recover.

The embodiment of the invention provides a redundant array of independent disk (RAID)-based storage method and device. The method comprises the steps as follows: a hard disk stored according to a traditional RAID is divided into a plurality of storage blocks; a resource pool is obtained through combination of the storage blocks; and a corresponding logic unit number LUN is built through the combined resource pool, wherein the LUN occupies the same hard disk physical space as an original LUN in the hard disk stored according to the traditional RAID. Through the RAID-based storage method provided by the embodiment of the invention, updating of a virtualized storage mode of the blocks is achieved under the condition of not requiring data migration; and storage of directly converting traditional RAID data into the data capable of supporting a virtualization function is achieved, so that the reliability and the usability of an overall system in which a storage array is located are improved.

The invention relates to a relational data semantic modeling method, which comprises the following steps of: performing data extraction on multi-data source data information on the basis of a multi-dimensional dissimilar data source to obtain a database and data table information; and then selecting a data table required by modeling according to the modeling requirement of the user, completing thevisual deployment of the hierarchical model, and generating a modeling canvas. The user generates a rule document in the JSON format in a node dragging and configuration mode. Multi-user and multi-canvas model establishment is realized through user management and canvas management functions, and finally, a semantic data model is established according to multi-dimensional relational database dataand rules. According to the method, bottom layer support is provided for summarizing and analyzing the multi-data source data, multi-dimensional information is summarized, effective integration and sharing of the data are achieved, and interoperability of resources is improved. The method has good expandability, is convenient for adding new data sources and data tables, and does not influence theuse of the original system.

The invention discloses a reconfigurable satellite integrated electronic system, which can realize fast reconfiguration of the system, improves fault-tolerant capability of the system, reduces power consumption and weight of the whole satellite and reduces waste of calculating resources. The system comprises more than two integrated service units and a 1553B bus. The more than two integrated service units are connected through the 1553B bus; one of the integrated service units serves as a bus controller BC of the 1553B bus, and the other integrated service units serve as remote terminals RT ofthe 1553B bus. The BC is configured to execute an integrated control task of on-satellite in-orbit data; one RT is configured to execute one on-satellite independent electronic function task; and when the current BC fails, one RT is switched to a new BC of the 1553B bus, and the new BC executes the integrated control task of the on-satellite in-orbit data.

The invention discloses a reconfigurable man-machine cooperation mechanical arm system based on WIFI. The system comprises joints, a reconfigurable interface and an arm lever, wherein the joint is cooperated with the reconfigurable interface through the rabbet at a drive end of the reconfigurable interface; and the arm lever is cooperated with the reconfigurable interface; the system further comprises a smart terminal, a WIFI communication module, a joint servo controller, a sensor signal acquisition module, a motor driving module and a joint motor; the smart terminal is connected with the joint servo controller through the WIFI communication module; the output end of the joint servo controller is connected with the motor driving module; the output end of the motor driving module is connected with the joint motor; and the output end of the sensor signal acquisition module is connected with the input end of the joint servo controller. By use of the wireless communication, the fast reconstruction of the control system is facilitated; the stable data sending can be realized by taking the WIFI as the wireless communication way in the mechanical arm. The system can be extensively applied to the robot field.

The invention discloses a method for quantifying compression of time series data in nonvolatile memories. The method comprises the following steps of: 1, smoothing to-be-compressed time series data Sto obtain smoothed time series data (as shown in the specification), extracting a feature point in the smoothed time series data, and recording a value of a corresponding position in the original timeseries data S; 2, carrying out time series reconstruction by utilizing a linear interpolation method so as to obtain a reconstructed time series T; and 3, comparing the series T with series S by utilizing a dynamic time distortion algorithm, solving a distance between the two series, setting a distance threshold value, if the distance between the two time series is smaller than the threshold value, considering that the two time series are similar, and otherwise, considering that the two time series are not similar and re-adjusting the width of a smooth window. The method has the technical effects of realizing the rapid reconstruction of time series data when the time series data is stored in nonvolatile memories, and decreasing written data sizes of the nonvolatile memories while ensuringthat differences between the compressed data and the original data are located in an acceptable range.

The invention relates to an RAID6 (Redundant Array of Independent Disks 6) encoding method capable of repairing a single-disk error by minimum disk accessing. The RAID6 encoding method comprises an encoding scheme and a single-disk failure repairing scheme. The encoding scheme is a method for generating calibrated data stored by redundant nodes, and is obtained by constructing an encoding matrix. The single-disk failure repairing scheme is that if a failure disk is a k+2th disk, data stored in first k disks is read and according to the encoding scheme, calculation is carried out again to generate the calibrated data; and if the failure disk is one of other disks except for the k+2th disk, only respectively reading half of data stored in the rest of k+1 disks, and after aggregation, carrying out encoding to generate data stored in the original failure disk. According to the RAID6 encoding method disclosed by the invention, the data stored in the failure disk can be rapidly reconstructed, and in the hot repairing process, adverse effects on other applications in a system are reduced to minimum.

The invention discloses a synthetic aperture radar (SAR) imaging method based on a graphics processing unit (GPU). Through the SAR imaging method, based on compressive sensing theory, SAR imaging of a sparse scene is realized. The method is characterized in that: the method comprises the following steps: establishing a sparse SAR imaging module and determining a reconstruction algorithm of the module; based on the size of the SAR imaging, determining sizes of grids and thread blocks required by parallel parts of the reconstruction algorithm and allocating storage space, which is used for storing data in the reconstruction algorithm, for the GPU; and reading the observation data from outside by the GPU, performing sparse reconstruction on the SAR imaging based on the reconstruction algorithm, and returning reconstruction results. The parallel performance of the GPU is utilized in the SAR imaging method, and thus rapid reconstruction of the SAR imaging which is based on the compressive sensing theory is realized.

The invention discloses a network structure of a mine wireless sensor network and a network node deployment method, and belongs to the wireless network structure and the network node deployment method. The network structure is as follows: the basic topological relation between the roadways takes a midpoint as a starting point and the graph theory as the theoretical basis; an algorithm obtains a series of roadway midlines with the same attribute through the roadway midpoint, through the optimization treatment, a roadway arc and a basic structure of the roadway line are constructed, and a roadway two-dimensional structure topological graph composed of roadway midlines is formed; the network node deployment method comprises the following steps: forming a skeleton network of the mine monitoring aiming at an underground signal attenuation factor on the basis of the roadway two-dimensional structure topological graph; establishing a communication node set by taking the underground signal shielding and attenuation as a constraint condition through the algorithm, transmitting the received information to the ground to analyze and treat, thereby guaranteeing the information transmission. The network structure disclosed by the invention has the advantages that the survivability of a coal mine safety production monitoring system under a disastrous condition is improved, and the fast reconstruction of the safety production monitoring system is realized through the coal mining and tunneling face.

The invention provides a reconstructing method and system of a reflector antenna far-field pattern. The reconstructing method comprises the steps: the typical wavefront error is described based on standard Zernike polynomial combinations of all orders; according to the typical wavefront error, a first-order influence direction pattern and a second-order influence direction pattern of a reflector antenna are obtained through a far-field pattern with the approximately developed Taylor series; an ideal far-field pattern containing no typical wavefront error is calculated, and basic direction pattern data are obtained according to the ideal far-field pattern, the first-order influence direction pattern and the second-order influence direction pattern; wavefront error data are obtained, the typical wavefront error is subjected to Zernike polynomial fitting, and the coefficient vector is obtained; and weighted combination is conducted through the coefficient vector and the basic direction pattern data, and the reflector antenna far-field pattern is obtained. The calculation time can be reduced, and the reflector antenna far-field pattern can be quickly reconstructed.

The invention provides an image detection method for morphological parameters of atmospheric pollution particles. The image detection method comprises the following steps: acquiring digital image dataof the atmospheric pollution particles based on optical three-dimensional scanning; pre-processing such as de-noising and binarization is carried out on the acquired image; atmospheric pollution particulate matter segmentation and positioning are carried out; calculating to obtain atmospheric pollution particulate matter morphological parameters; the method has the advantages of wide measurementrange and more measurement objects; Morphological parameters of atmospheric pollution particles can be directly measured and calculated; the method can accurately position the atmospheric pollution particles and calculate the morphological parameters of the atmospheric pollution particles, effectively obtains the morphological and type information of the atmospheric pollution particles, and provides convenience for a user to know the atmospheric pollution condition in time.

The invention discloses a linear engineering three-dimensional geological modeling method. Three-dimensional geological modeling methods and technologies are immature due to engineering geological condition complexity and cognition limitation. Present three-dimensional geological modeling business software is mainly for the industries such as oil reservoirs and mines, and is seldom based on linear engineering characteristics; in addition, the workload of man-machine interaction is greater and can not meet large scale engineering application requirements. Based on the characteristics of linear engineering prospective design, the method mainly involves a vertical section segment, a horizontal-vertical section segment and a special geological structure (a fault, etc), and includes first setting an interest region entity, establishing a geological interface model, and diving into geologic bodies through Boolean operation, thereby avoiding possible topological problems by employing surface closed body formation; besides, the model is an entity, is in favor of late stage simulation, design and engineering workload calculation, has the characteristics of small man-machine interaction workload and strong model controllability, and can meet large scale application demands.

The invention discloses an open type industrial robot controller architecture based on double CPUs and an FPGA. A main CPU realizes product application of an industrial robot by calling a reconfigurable standard function library, and through data sharing, an auxiliary CPU can realize compensation control of a product, and can also totally take over control of an robot, and is used for algorithm research and function module development, thereby achieving the goal of hierarchical high openness. Since shared data adopt the same address coding, an auxiliary CPU program can generate a machine code directly executed by a main CPU program, thereby realizing rapid transplantation and reconstitution of a function module. A double-port RAM structure designed in the FPGA has two sets of completely independent data lines, address wires and read-write control lines, so that the two CPUs can independently access RAM resources inside the FPGA in a time-sharing manner, and an arbitration logic circuits are all integrated in the double-port RAM during simultaneous access of the double CPUs, thereby simplifying the design of the circuits.

The invention belongs to the field of radar imaging, and particularly relates to an SA-ISAR imaging and self-focusing method based on CV-ADMMN, and the method comprises the following steps: S1, carrying out the modeling of a one-dimensional range profile sequence of a moving target; S2, modeling the sparse aperture ISAR imaging scene of the moving target; S3, establishing an ADMM reconstruction model of a moving target sparse aperture ISAR imaging problem; S4, establishing a CV-ADMMN network structure model; S5, solving the sparse aperture ISAR imaging problem by using a CV-ADMMN network structure. The invention has the advantages that moving target sparse aperture ISAR imaging and self-focusing can be achieved, a complete radar image can be rapidly reconstructed under the sparse aperturecondition, and phase error compensation is achieved; and the algorithm performance has weak dependence on parameter selection, so better reconstruction performance is obtained. The method has important engineering application value for sparse aperture ISAR imaging and self-focusing under the condition of data loss.

The invention discloses a building construction quality actual measurement data acquisition device. The device comprises a vehicle body, a control mechanism and a data acquisition mechanism, the vehicle body comprises a rear suction cup set, a rear vehicle frame base, a steering engine, a gear, a rack, a front suction cup set, a front vehicle frame base, a spherical hinge and an electric push rod.The control mechanism comprises a single-chip microcomputer, a controller, a battery and a power switch; the data acquisition mechanism comprises an ultrasonic sensor and a three-dimensional laser scanner. The building construction quality actual measurement data acquisition device can rapidly, effectively, completely and automatically move and can achieve the building construction quality actualmeasurement data acquisition with high-precision so as to achieve the complete and high-precision measurement for the whole object to be measured and directly perform rapid reverse three-dimensionaldata acquisition and model reconstruction from the measured object, and each piece of three-dimensional data in the laser point cloud is the real data of the directly measured object, so that the acquired actual measurement data is real and reliable, the traditional single-point measurement method is broken through, and the labor and time are effectively reduced.