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711results about How to "Improve implementation efficiency" patented technology

Identity-based unmanned aerial vehicle key management and networking authentication system and method

The invention belongs to the technical field of a device for verifying the identity or credentials of a system user, and discloses an identity-based unmanned aerial vehicle key management and networking authentication system and a method thereof. The ground authentication server is responsible for generating and distributing system parameters, identity information and keys required by the unmannedaerial vehicle for key management and network authentication. UAV authentication client is the main body of the system; Through mutual cooperation, the key pairs of UAV for network authentication canbe generated in a distributed manner, and the identity authentication and key agreement between UAV can be realized by using the key pairs. The invention improves the problem of unequal calculation of nodes in the key management of the UAV network existing in the prior art, enhances the reliability of the system, and realizes the key management of the UAV self-organization. The two-way authentication between UAV nodes ensures the credibility and authenticity of both sides of the communication. Using identity public key and bilinear pairing implementation, the computational overhead is less and the implementation efficiency is improved.
Owner:XIDIAN UNIV +1

Interactive three-dimensional panoramic multimedia virtual exhibition method based on physical exhibition hall

The invention discloses an interactive three-dimensional panoramic multimedia virtual exhibition method based on a physical exhibition hall, and relates to the technical field of virtual exhibition realization method. The method comprises the following steps: scanning a physical exhibition hall scene; constructing a three-dimensional panoramic exhibition hall information model by using the data obtained by scanning the physical exhibition hall scene; constructing an available exhibition and display region database; constructing an exhibition and display basic material library; constructing an exhibition and display content database; constructing a three-dimensional panoramic multimedia exhibition information model; creating a three-dimensional panoramic multimedia interactive roaming model based on the three-dimensional panoramic multimedia exhibition information model; and adding an audience management module to the three-dimensional panoramic multimedia interactive roaming model. The method can replace the exhibition and display content in the virtual exhibition hall at low cost and fast speed, can change audience's roles, can record viewer's tracks, can improve the fun of the exhibition, is good in experience effect, and can help a virtual exhibition organizer improve planning and management.
Owner:东莞新吉凯氏测量技术有限公司

Traffic control system and method

The invention provides a traffic control system and a traffic control method. The system comprises an application information storage module, a scenario configuration module, a traffic control optimization module, a traffic identification module and a traffic control strategy implementation module, wherein the application information storage module is used for storing corresponding relationships among application types, application attribute information and application traffic control modes; the scenario configuration module is used for receiving a scenario configuration parameter input by a user, wherein the scenario configuration parameter carries an application type related to a current scenario; the traffic control optimization module is used for acquiring the scenario configuration parameter and application attribute information and an application traffic control mode corresponding to the application type related to the current scenario, and generating a traffic control strategy for the current scenario according to the acquired scenario configuration parameter, the application attribute information and the application traffic control mode; the traffic identification module is used for identifying the application type of a data packet in a network; and the traffic control strategy implementation module is used for finishing traffic control according to the traffic control strategy for the current scenario and the identified application type of the data packet in the network.
Owner:BEIJING XINWANG RUIJIE NETWORK TECH CO LTD

Intelligent red light running identifying system and vehicle behavior detecting and capturing method

The invention belongs to the technical field of video monitoring and discloses an intelligent red light running identifying system which is characterized by comprising a data collection sub-system, a communication network sub-system and a central management sub-system, wherein the data collection sub-system is used for video stream collection, traffic light state detection, motor vehicle traffic violation behavior detection, traffic violation picture capturing, fill light control, local storage of traffic violation records and network uploading task of related information. The invention also discloses a vehicle behavior detecting and capturing method which is characterized by comprising the following steps: acquiring a camera video sequence; carrying out foreground area detection; carrying out vehicle detection; carrying out vehicle tracking; judging whether the vehicle reaches the trigger line position or not; and if so, sending a trigger signal. In the invention, the intelligence level of electronic traffic management is raised, the efficiency of traffic violation vehicle detecting, identifying and capturing is improved, and intelligent integration of collection, identifying and recording in electronic traffic management can be realized.
Owner:HUNAN BOGUANG INFORMATION TECH CO LTD

Nondestructive testing robot intelligent testing method based on virtual reality technology

The invention discloses a nondestructive testing robot intelligent testing method based on a virtual reality technology. The method comprises the following steps: (1) a nondestructive testing robot for nondestructive testing is mounted at a predetermined position in a to-be-tested reactor pressure vessel; (2) freedom degree kinematic axes of the nondestructive testing robot are each restored to an initial state, then the freedom degree kinematic axes are each subjected to position calibration, and a global coordinate system and axis coordinate systems of the freedom degree kinematic axes are constructed; (3) corresponding relationships are established between simulation models and real devices; and (4) the simulation model of the nondestructive testing robot performs position attitude transformation, virtually displays and controls synchronous movement of the nondestructive test robot to perform nondestructive testing in a three-dimensional virtual environment according to real-timely acquired position attitude information feedback values of the freedom degree kinematic axes of the nondestructive testing robot. The method realizes the omni-directional three-dimensional WYSIWYG display control mode, greatly improves the security of on-site project implementation, and improves the project implementation efficiency.
Owner:CGNPC INSPECTION TECH +3

Test method for intelligent substation station-control layer

The invention discloses a test method for an intelligent substation station-control layer. The test method for the intelligent substation station-control layer comprises the following steps: (1) a mode matching module is used for matching the operation mode and the test mode of intelligent electronic equipment from an operation pattern bank according to the model file of the intelligent electronic equipment of a spacing layer, the operation mode information and the test mode information are stored into a mode memory, and meanwhile, a simulation equipment operation module and a test management and control module are notified; (2) the simulation equipment operation module loads the operation model to construct simulation equipment which conforms to the IEC(international electrotechnical commission)61850 communication specification; (3) the test management and control module realizes the standardized output of the test data of station-control layer simulation equipment by loading the test mode, and a corresponding test report is generated. According to the test method for the intelligent substation station-control layer, which is disclosed by the invention, the artificial check workload can be greatly reduced, and the normalization of a test process and the validity of a test result can be strongly guaranteed.
Owner:STATE GRID CORP OF CHINA +2

Synchronization method and device applied to quantum secret key distribution system and distribution system

The invention provides a synchronization method applied to a quantum secret key distribution system. A system employed by a quantum secret key distribution method comprises a laser device arranged ata transmission end of the system, a fiber and a detector arranged at a receiving end of the system, wherein the laser device not only transmits a quantum signal and further transmits strong light, wavelength of the strong light is identical to the quantum signal light, intensity of the strong light is stronger than that of the quantum signal light, the quantum signal light and the strong light aretransmitted to the detector at the receiving end of the system through a channel of the fiber for detection, two ends of the system are synchronized according to the strong light signal, after the strong light satisfies attenuation through a transmission link, the strong light can still be detected by the detector. The invention further provides a synchronization device employing the method and asecret key distribution system of the synchronization device. The system is advantaged in that system cost is reduced, and problems that one extra channel (wavelength) is occupied and realization efficiency is low in a scheme in the prior art are solved.
Owner:QUANTUMCTEK

PIC (Peripheral Interface Controller)-model-based accelerator simulation method implemented by using GPU (Graphic Processing Unit) in parallel

The invention discloses a PIC (Peripheral Interface Controller) model-based accelerator simulation method implemented by using a GPU (Graphic Processing Unit) in parallel. The method comprises the following steps: copying initialization information from a host to the GPU for calculating nodes; determining a corresponding relationship of particle positions and grids according to the initialization information; according to the corresponding relationship of the particle positions and the grids, calculating charge density weights, on the grids, of all particles in each grid to obtain the charge density distribution of the grid; calculating the potential distribution of the grids according to the charge density distribution of the grids, and calculating the electric field distribution of the grids according to the potential distribution of the grids; calculating the motion change of each particle under the action of an electric field, and updating the motion state of each particle; replacing the initialization information by the updated motion state of each particle, and iteratively carrying out the steps until the motion states of the particles satisfy design requirements. According to the method, the technical problems of being low in operation speed of a simulation algorithm, high in cost and the like in the existing PIC model-based accelerator can be solved.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI

Processing feature recognition and information extraction method for MBD model

ActiveCN110795797ANarrow down the global search spaceSupport extensionGeometric CADEngineeringData mining
The invention provides a processing feature recognition and information extraction method for an MBD model. The method comprises the following steps: 1, analyzing the MBD model; 2, traversing the cylindrical surface, and identifying hole characteristics; 3, initializing an attribute adjacency graph storage matrix, and constructing an attribute adjacency graph; 4, traversing predefined processing features and feature sub-graphs thereof; 5, identifying all the machining feature surface sets of the type by using a sub-graph isomorphism method; 6, calculating the key geometric dimension accordingto the processing feature type; 7, extracting three-dimensional labeling information of the model; 8, extracting part annotation information; 9, interactively identifying self-defined processing characteristics; 10, visualizing a machining feature recognition result; 11, outputting a feature recognition and information extraction result in a structured manner. Through the steps, the machining feature surface set in the MBD model can be recognized, the key geometric dimension of the machining feature surface set can be automatically calculated, the three-dimensional annotation and annotation information of the part can be extracted, the final result is output in an XML form, and a good data foundation is laid for subsequent process design.
Owner:BEIHANG UNIV

BIM-based steel structure full life cycle management system and method

The invention discloses a BIM-based steel structure full life cycle management system and method, and belongs to the technical field of fabricated steel structure computer application. The system comprises four modules: a first module which is a design calculation module and a data information sharing platform provided for a plurality of different professional departments; a second module which isa prefabrication processing module, completes deepening of a design drawing, divides component categories according to information, gives a prefabricated component production plan and completes prefabrication processing in a factory; a third module which is a construction management module used for overall planning component scheduling, laser scanning of a construction site, simulation of site construction and supervision of construction quality and progress; and a forth module which is a maintenance management module used for regularly maintaining and detecting the building put into use andanalyzing and processing emergency accidents. According to the invention, cooperative management of the fabricated steel structure in the whole life cycle of design, processing, construction and use maintenance can be realized, and three-dimensional visual information collection, process supervision and later operation maintenance are carried out on the building.
Owner:JINLING INST OF TECH

Online analyzing method for grid forced power oscillation caused by internal disturbance of power plant

The invention discloses an online analyzing method for grid forced power oscillation caused by internal disturbance of a power plant and relates to the field of power system operation and control. The method is mainly used for judging whether the grid forced power oscillation is caused by internal periodical disturbance of the power plant. In actual operation of a grid, the forced power oscillation caused by generator disturbance is the most common oscillation mode, but whether grid oscillation is caused by the internal disturbance of the power plant where the grid is connected or by the disturbance at the grid end is difficult to judge directly through the characteristics of oscillation amplitude, frequency and the like. Therefore, the method is provided to identify measured data parameters of the power plant connected into grid nodes based on FFT (fast Fourier transform) and conduct energy flow phase difference analysis to judge whether the grid oscillation is caused by the internal disturbance of the power plant where the grid is connected. By means of the method, judgment can be conducted directly at a measuring terminal, and the method is simple in calculation and high in analyzing speed and has good actual application value.
Owner:STATE GRID CORP OF CHINA +1

Method for manufacturing three-dimensional analysis tooth-preparation guide plate based on 3D printing and usage method thereof

The invention discloses a method for manufacturing a three-dimensional analysis tooth-preparation guide plate based on 3D printing and a usage method thereof. The manufacturing method comprises the following steps: (1) acquiring a digital model; (2) performing virtual design of target prosthesis; (3) performing virtual assembly of the model and the target prosthesis; (4) performing virtual adjustment and modification on the integral model after the virtual assembly of the model and the target prosthesis, and obtaining the integral model after fine virtual adjusting; (5) materializing a tooth-preparation guide plate; and (6) performing 3D printing of the tooth-preparation guide plate. The method comprehensively considers the existing tooth shape and the shape of the future prosthesis, and realizes the whole-process quantity control to the tooth-preparation process from a lip-cheek direction, a tongue-palate direction and a HE direction, and is not influenced by subjective experience ofthe clinicians, tooth preparation can be minimally and accurately completed, the whole process can be digitally controlled and operated, the production process is simple, the deformation of the prepared teeth is very small, and the data validity and the efficiency of the dental restoration project are improved.
Owner:SICHUAN UNIV

IEC (International Electrotechnical Commission) 61850 relay protection model checking method

The invention relates to an IEC (International Electrotechnical Commission) 61850 relay protection model checking method. As ICD (interface control document) model documents have a series of problems including data type template conflicts, mismatching of configured data sets and device design, grammar problems, incorrect formats of short addresses, inexistence of configured variable names and thelike, equipment development and project implementation schedule are seriously affected. The method comprises the following steps of: reading in ICDs, reading out application model data from the ICDs by an ICD analysis module, carrying out grammar and semantic processing on the application model data and then submitting the application model data to a checking module; providing generated check rule templates to the checking module by a rule template module; and beginning checking after obtaining the data provided by the ICD analysis module and the check rule templates provided by the rule template module and sending the check results to a document management module the checking module. The method has the beneficial effect of ensuring correctness, consistency and stability of the ICDs.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1

Automatic access method for self-describing plug-and-play power distribution terminal

The present invention discloses an automatic access method for a self-describing plug-and-play power distribution terminal. The method comprises a standard configuration process, an automatic login and security verification process and a power distribution terminal CID (Configured IED (Intelligent Electronic Device) Description) file acquisition process. For the standard configuration process, an IEC61850 configuration technology is applied, an CID file is instantiated, and a security certificate file is downloaded; for the automatic login and security verification process, the CID file is read and a login message is generated, and a login process is automatically initiated after power-on, and an automatic login to a power distribution master station is completed, wherein, the power distribution master station performs security verification on a power distribution terminal by checking a certificate, updating the certificate and checking a signature; and for the power distribution CID file acquisition process, a CRC32 checking code is compared, the CID file of the power distribution terminal is updated according to needs, so as to implement automatic access of the power distribution terminal. The present invention provides the automatic access method for the self-describing plug-and-play power distribution terminal, which enables the power distribution terminal to automatically and rapidly access a power distribution network, so that operation and maintenance costs are reduced.
Owner:ZHUHAI XJ ELECTRIC
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