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84results about How to "Flexible organization" patented technology

Layered exchange and control method for real-time monitoring system data by power dispatching

The invention provides a layered exchange and control method for real-time monitoring system data by power dispatching. A CIM / XML (common information module) / (extensible markup language) interface, a CIM / E interface and other models of the electric power subsystems are processed and combined to establish a device model of the large power grid, therefore, perfect interaction of various application data including SCADA (supervisory control and data acquisition) real-time data, WAMS (wide area measurement system) data, EMS (enhanced message service) advanced application data and dynamic security analysis warning information can be realized, and power system control commands among the systems can be smoothly transmitted and executed. A data acquisition and exchange function can support multiple communication protocols, multi-application, multi-type and large amounts of data, satisfy the real-time requirements of all transmission environments, and provide comprehensive multi-scale real-time operation information of the power grid for other application analysis systems. A close integration mode is used to realize application integration and each subsystem and application can be monitored and managed, so a uniform access interface and a man-machine interface can be ensured to provide for each application system.
Owner:CHINA ELECTRIC POWER RES INST +1

On-line measuring method and device for outer diameter and ovality of large-diameter steel pipe end

The invention relates to the field of steel pipe outer diameter and ovality measurement, particularly to an on-line measuring method and device for the outer diameter and the ovality of a steel pipe end. The on-line measuring method for the outer diameter and the ovality of large-diameter steel pipe end is as follows: obtaining the nominal data of a to-be-measured steel pipe for determining the axis position, setting the interval for an outer diameter laser displacement sensor, enabling a probe of the sensor to be directed at the axis for measurement and then obtaining the diameter D of the to-be-measured steel pipe, rotating the sensor for 180 degrees for measuring the outer diameter in the all peripheral direction, and obtaining the average diameter and ovality of the to-be-measured steel pipe. The on-line measuring device for the outer diameter and the ovality of large-diameter steel pipe end is characterized by including an industrial robot, an outer diameter measuring device and an axis detecting device. The standard industrial robot is adopted for carrying the measuring device and arranged around the to-be-measured steel pipe end, the non-contact measuring technology is adopted for measurement, and the on-line measuring device has high precision and speed, and excellent popularization and application prospect.
Owner:BAOSHAN IRON & STEEL CO LTD

Platform for data services across disparate application frameworks

Data management between a common data store and multiple applications of multiple disparate application frameworks. A data storage component is provided that facilitates the storage of data, which data includes structured, semi-structured, and unstructured data. A common data platform interfaces to the data storage component to provide data services accessible by a plurality of disparate application frameworks, which data services allow a corresponding application of the different frameworks to access the data.
Owner:MICROSOFT TECH LICENSING LLC

Network video monitoring system based on FPGA chaotic encryption

The invention relates to a network video monitoring system based on FPGA chaotic encryption, comprising a server terminal, a client terminal and a system configuration terminal. The server terminal comprises a plurality of cameras, a video server, an encryption module and a signal sending module; the client terminal comprises a signal receiving module, a decryption module and a client terminal player; video frequency collected by the plurality of cameras is coded by the server, then input into the encryption module via the Ethernet and sent to the client terminal via the signal sending module after encrypted; the signal receiving module of the client terminal receives the encrypted video data and then sends the data to the decryption module for processing and finally the client terminal player plays the video data; the encryption module and the decryption module are respectively an FPGA encryption board and a decryption board; the encryption process and the decryption process of the encryption module to video flow are as follows: the encryption module adopts a CPRS array which is cut and operates with a plain text data module 2, and then sent; and the receiving terminal of the decryption module obtains the same CPRS array, and then operates with a cryptograph module to realize decryption.
Owner:NANJING UNIV

Rivet press assembling mechanism

The invention provides a mechanical mechanism which performs rivet press assembling from a circumferential or periphery direction. The mechanism is composed of a rack, a pressing unit and a rivet press unit, and is characterized in that when the pressing unit presses a rivet press member tightly, reciprocating motion of a rivet press cylinder is used for driving a rivet press rotating unit to rotate, the rotating motion is converted into linear motion of a cam bearing follower through rivet press on a profiling chute with a curved surface on a cam disk, and therefore six sets of rivet press blades are driven to perform synchronous linear motion opposite to the axis direction of the rivet press member to complete the rivet press in the circumferential or periphery direction. The mechanism is flexible, compact, high in automation degree, convenient and stable in operation, long in service life, wide in applicability, suitable for various parts required for rivet press assembling, particularly suitable for the parts required for the rivet press assembling from the circumferential or periphery direction, and the like.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +1

Layered representation-based unmanned plane video adaptive transmission method

The invention discloses a layered representation-based unmanned plane video adaptive transmission method. A device for realizing the method comprises a layered structure for video representation, wherein the layered structure sequentially comprises a background layer, an object layer and an enhancement layer from bottom to top. According to different requirements, a corresponding layered structure is selected to transmit a video, and the problem that the movement of an independent moving object in the video is vague and cannot be recognized after the independent moving object is compressed is solved by dividing the moving object. A clear panoramic picture can be provided, or a video sequence with relatively high quality can be provided. The output precision is improved, the compression time is greatly shortened, and the working efficiency is improved to a great extent.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Ink jet device for preparing superfine primary/secondary grid line of solar cell

The invention discloses an ink jet device for preparing a superfine primary / secondary grid line of a solar cell. The invention aims to improve the conversion efficiency of the solar cell by reducing the shielding area of an antireflection coating and realizing a high depth-to-width ratio. The ink jet device comprises linear guide rails, and a transverse positioning mechanism and a longitudinal positioning mechanism arranged on each set of linear guide rail; each set of transverse linear guide rail comprises a transverse linear slide rail and a transverse-sliding slide block; each set of longitudinal linear guide rail comprises a longitudinal linear slide rail and a longitudinal-sliding slide block; each longitudinal-sliding slide block is fixedly provided with a guide rail installation seat; the bottom end of each transverse-sliding slide block is provided with a micro-moving positioning platform which consists of a planar micro displacement mechanism and a plurality of piezoelectric ceramics; the bottom end of each planar micro displacement mechanism is fixedly provided with a ink jet printing head array. With the adoption of the ink jet device disclosed by the invention, high positioning accuracy of the ink jet printing head can be met, and the preparation of the orthogonal superfine primary and secondary grid lines can be completed at one step; the ink jet device has the advantages that the mechanism is flexible and adjustable, the operation is reliable, the production efficiency of printing the grid lines can be improved, and the fragment rate of cell pieces can be reduced.
Owner:48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP

Optical arrangement and a microscope

An optical arrangement in a microscope, comprising an illumination device for generating an illumination light beam (1), running on an illumination side, a splitting device (2) for splitting the illumination light beam (1) into at least two partial beams (3, 4), and a mirror arrangement (5) for reflecting the partial beams (3, 4) into an illumination region (6) for plane illumination of a sample (7), with regard to flexible application with structurally simple means, is characterized by a detection optical unit (8) arranged on that side of the illumination region (6) which faces away from the illumination side. A microscope comprising a corresponding optical arrangement is furthermore specified.
Owner:LEICA MICROSYSTEMS CMS GMBH

Information management method in data communication equipment

The management method of configuration information in data communication equipment is characterized by that said method designs a Section for every kind of configuration information, according to theSection, on the main control board a Section vector array structure for storing and managing configuration data is set, so that when the equipment is started, firstly the Section is created, the Build Run of every configuration processing module of said equipment can be registered under the correspondent Section of the above-mentioned Section vector array structure, and according to the configuration file stored in the equipment the configuration can be restored under the Section. Said invention can effectively combine various dispersed configuration informations and solve the management problem of configuration informations under the distributed environment.
Owner:HUAWEI TECH CO LTD

All-tailings concentrating adglutinate new process

The present invention relates to a whole tailings concentration and cementation new process. For low-concentration tailings said invention adopts a step concentration technique formed from hydraulic cyclone and thickener. The coarse grain concentrate obtained by said hydraulic cyclone and fine grain concentrate obtained by said thickener can be singly used for making cementation filling, the coarse grain concentrate also can be mixed with the fine grain concentrate, and can be used for making whole tailings cementation filling.
Owner:SHANDONG UNIV OF SCI & TECH

XML (Extensible Makeup Language) document access control method and system for XML database system

InactiveCN102542069AReduce workloadReduce access computing overheadSpecial data processing applicationsData viewXML database
The invention discloses an XML (Extensible Makeup Language) document access control method and system for an XML database system. The XML document access control method comprises the following steps of: constructing a logical data view DAG (Direct Acyclic Graph) with authority configuration information, wherein the logical data view DAG provides an XML document multilayer storage logical view with the authority configuration information to subscribers, an XML document can be accessed through a plurality of paths, subscribers with different authorities are configured with different paths, and the different paths show different authorities; carrying out access authority calculation on nodes of the logical data view DAG level by level in the process of carrying out access control calculation, wherein as long as the access authority for the present path node is obtained, a next level node of the access path is authorized for entrance till the XML document is accessed; and if the access on one node is refused, the whole access is refused. According to the XML document access control method and the XML document access control system, disclosed by the invention, XML DBMS (Data Base Management System) access control becomes very flexible and configurable.
Owner:PEKING UNIV FOUNDER GRP CO LTD +2

Security level authentication method and system

The invention discloses a security level authentication method and system. The method comprises the following steps: a third-party system is divided into a business system and an application system, BOSS is used to define the business system information, formulate billing strategy and update the information to SASE, SASE completes the registration of the business system; SASE defines the application system information, and defines and manages the security level strategy of each system; SASE classifies the systems according to business models and distributes corresponding security level strategies for different kinds of systems; and a user accesses the third-party system through a portal system, a single sign-on system distinguishes the system accessed by the user and performs corresponding safety verification flows according to the security level strategies corresponding to different kinds of systems and the corresponding security level strategies of the systems. By adopting the technical scheme of the invention, the extensible security level strategies can be provided and the security strategies can be classified so that the systems can flexibly integrated to the current architecture and the safety of each system can be ensured.
Owner:天柏宽带网络技术(北京)有限公司

Transmitting method based on parallel batch network coding

The invention relates to a transmitting method based on parallel batch network coding. According to the transmitting method, network coding is used for transmitting data, data flow to be transmitted is divided into batches comprising the same number of groups, the groups in each coding batch are coded and transmitted together, and a target node can decode one batch after receiving the enough number of the coded groups. The method can be applied to a wireless Mesh network, and provides reliable and efficient data transmission service; network coding is utilized for improving the transmission efficiency; to overcome the defect of low efficiency caused by an existing research and use stop wait strategy, the invention provides a parallel transmission method; a sending window which can dispatch a plurality of batches at the same time is maintained on a source node, and parallel dispatching of the multiple batches is controlled according to feedback information; in comparison with an existing research result, batch transmission can be organized more flexibly and efficiently, and then the end-to-end handling capacity is improved.
Owner:PLA UNIV OF SCI & TECH

Electronic dual plate-based dual-image teaching method

InactiveCN102147983ALogical thinkingFull sensory stimulationElectrical appliancesComputer graphics (images)Data science
The invention relates to the technical field of teaching and education information and provides an electronic dual plate-based dual-image teaching method. The method comprises the following modes of: 1, displaying the two kinds of medium resources on the left and right images synchronously; 2, displaying two pages of the same PPT file in two windows; and 3, displaying the medium resources and the teacher's blackboard-writing in two images in contrast. In the method provided by the invention, the relevant teaching contents are displayed in two images in contrast to make the contents logical, so that the limit of sequential display of the teaching contents is broken, teachers have more choices in teaching manners and the display form is more accordant with the logical thinking of students.
Owner:HUAZHONG NORMAL UNIV

Multilayer micro bionics flapping aerocraft

The invention discloses a multilayer micro bionics flapping aerocraft, and belongs to the field of mechanical design. The multilayer micro bionics flapping aerocraft comprises double-layer double-crank rocker mechanisms, a driving mechanism and a flexible wing mechanism. The driving mechanism produces driving force and transmits the driving force to the double-layer double-crank rocker mechanisms.The double-layer double-crank rocker mechanisms produce corresponding flapping trajectories and overturn actively to drive the flexible wing mechanism connected with the double-layer double-crank rocker mechanisms, so that the function of simultaneously conducting of flapping and turnover movement is achieved. By setting parameters such as the lengths of rockers, the lengths of cranks and the lengths of connecting rods on the upper and lower layers of mechanisms, the phase difference between the two layers of double-crank rocker mechanisms during moving is changed, so that flexible wings rotate to produce the angle of attack while the flexible wings flap; meanwhile, the flexible wings produce large deformation to form passive overturning, so that it is ensured that a large lift force is produced. The multilayer micro bionics flapping aerocraft has the functions of simultaneously achieving flapping and twisting the wings and the like, and has the characteristics of being compact in structure, small and exquisite in size, very low in mass, flexible in mechanism and the like.
Owner:BEIHANG UNIV

Data partitioning and merging method for electronic forms

The invention discloses a data partitioning and merging method for electronic forms. The data partitioning method comprises the following steps: dividing an original character string into a plurality of sub-character strings by using line separating characters or line width, continuing the division of the corresponding sub-character strings into data items by using column separating characters or column width, and subsequently storing the data items of each line and each column into corresponding unit grids to achieve matrix separating of electronic form data; and according to the data merging method, the data items in a selected cell grid are read line by line and column by column to the character string buffer area, a column separating character or a certain amount of spaces are added after a data item is read, a line separating character or a certain amount of spaces are added when a line tail data item is read, the character string obtained in a character string buffer area is stored in the cell grid after the data items in the selected cell grid area are read so that the merging of the matrix data is achieved. The data partitioning and merging method for electronic forms is convenient for exchange with other matrix or vector type data applications.
Owner:YOZOSOFT

Equipment resource information acquisition method

The invention provides an equipment resource information acquisition method. A timer periodically starts the acquisition process; an acquisition task table is scanned, acquisition tasks are filtered according to the acquisition cycle in the acquisition task table, and task list cache to be performed is generated; existence of the acquisition tasks in the task list cache is viewed; the equipment model numbers of the taken-out acquisition tasks are read, model number acquisition configuration cache is searched through the hash according to the equipment model numbers of the acquisition tasks and corresponding acquisition function configuration is obtained, and then function binding is performed so that a complete acquisition process stack is generated; a new acquisition thread is created; and the next acquisition task is continued. According to the equipment resource information acquisition method, the acquisition process is generated by adopting a method of packaging and dynamic binding so that a large number of model numbers are enabled to be clear in processing and better in stability; the acquisition process is configurable, organization is flexible and extension is convenient; and equipment access information is configured in XML in a centralized way to replace the mode of joint configuration of multiple fields as for task configuration.
Owner:BEIJING ENOVELL TECH

Global intelligence database data development and organization method based on big data technology

The invention relates to the technical field of data development and organization, in particular to a global intelligence database data development and organization method based on a big data technology. The method comprises the following steps of: automatically acquiring data of a wisdom library through a Web information acquisition system, and forming field information; forming a batch of data of the same type through definition of fields and attributes of described objects, and organizing the data of the type; creating a relationship between the data volumes; preprocessing the data througha big data processing technology to enable the data to become useful finished product data; finding an association relationship between data items in the finished data through an association mining technology and a clustering mining technology, and finding hidden information from a large amount of data. The data is displayed through the visualization technology, and the information rule hidden inthe data is visually displayed. The substantive improvement of the technology is realized, and the method has unique advantages in the aspects of advancement, novelty, intelligence, intuitiveness andthe like.
Owner:重庆尚唯信息技术有限公司

Emergency disaster situation display system and method based on multiple intelligent bodies

The invention discloses an emergency disaster situation display system and an emergency disaster situation display method based on multiple intelligent bodies, which can obtain disaster information in real time and can realize dynamic and multi-granularity three-dimensional display. The method comprises the following steps of: utilizing an SSHC (Scale Space Hierarchical Clustering) algorithm to process a remote sensing image to establish a hierarchical clustering tree; taking each node in the hierarchical clustering tree as a class; setting a surface feature corresponding to each class and establishing a three-dimensional model of each class; when a disaster situation is displayed, receiving a user instruction, wherein the user instruction comprises an expectedly-displayed surface feature A appointed by a user, and finding the expectedly-displayed surface feature A in the hierarchical clustering tree to be taken as a sub-tree of a tree root; creating collection intelligent bodies to collect data of bottom layer nodes in the sub-tree; creating organization intelligent bodies to collect data of other grades of the nodes except the bottom layer nodes from the collection intelligent bodies or the other organization intelligent bodies; rendering each type of the three-dimensional model according to the data of each node to form a three-dimensional geographic pattern of the surface feature A and displaying the three-dimensional geographic pattern; and displaying the three-dimensional geographic pattern with thinner granularity in the surface feature A.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Reducing roller brush sweeper

The invention relates to a sweeper provided with a variable-diameter roller brush, comprising a truck frame; a rotary shaft arranged on the truck frame; a plurality of retractable roller brushes formed by retractable supporting rods and brush heads which are evenly fixed on the rotary shaft; a guide rail arranged on the truck frame; sliding pins which are fixedly connected with the supporting rods, are used for cooperating with a guiding groove of the guide rail to realize straight working of brush heads to sweep ground and upper-inclined working of brush heads to sweep rubbish into a dregs-hopper; a dregs-guiding board articulated with the front edge of the dregs-hopper; one end of a link-rod mechanism is articulated with the dregs-hopper and the other end thereof is positioned in an affecting scope of a cam arranged on the rotary shaft. During a revolving process, the retractable roller brushes adopt the guide rail to realize the horizontal moving of the brush heads to sweep ground and to sweep dregs into the hopper so as to largely enhance the cleaning effect. Simultaneously, the cam link-rod mechanism can lead the dregs-guiding board to touch ground periodically so as to effectively reduce the wearing to the dregs-guiding board. The sweeper of the invention has the advantages that the design is proper; the mechanism is smart; the efficiency is high; the energy cost is low and the applicable sites are diverse.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Preliminary epidemic screening and safety monitoring and controlling cabin in public places

The invention discloses a preliminary epidemic screening and safety monitoring and controlling cabin in public places. The preliminary epidemic screening and safety monitoring and controlling cabin comprises a cuboid bio-safety detection cabin, a negative pressure isolation cabin and a public safety detection cabin, a first cabin inlet door and a first cabin outlet door are correspondingly arranged on the left side and the right side of the bio-safety detection cabin, the rear side of the negative pressure isolation cabin is in butt-joint with and communicates with the position, close to the first cabin outlet cabin, of the front side of the bio-safety detection cabin through a first side cabin door; a second cabin inlet door and a second cabin outlet door are correspondingly arranged on the left side and the right side of the public safety detection cabin, and the second cabin inlet door is in butt-joint with and communicates with the first cabin outlet door. According to the preliminary epidemic screening and safety monitoring and controlling cabin, the principle is scientific, the design is novel, the structure is simple and compact, strict detection can be achieved, whether a man is a wanted criminal at large or not can be identified, the travel safety of people in public places is ensured, very important social value and economic value are achieved, and very important political significance is also achieved.
Owner:付进廷 +2

Application dynamic union organization method based on service strategy

The present invention belongs to the field of computer application, and proposes the method of constituting dynamic application union based on the service requirement and service policy via calculation to select service and relevant resource dynamically. The method is favorable to dynamic sharing and application cooperation under opened environment. On the basis of community technology, policy computing technology is used in organizing dynamic application union. The specific steps include: registering the enterprise resource in service community, constituting service policy, performing service policy calculation based on event, creating dynamic application union, working cooperatively by union members, and disorganizing the dynamic application union. The present invention may be applied widely in information, electronic government affairs, electronic business affairs and other fields to back up comprehensive resource sharing and dynamic cooperation.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI

Monorail hanging rail car

PendingCN107587393ASmall horizontal turning radiusThe overall organization is flexibleMonorailsRailway tracksEngineeringTurning radius
The invention discloses a monorail hanging rail car, comprising a rail having an I-shaped cross section, a suspension device and a compartment. The compartment is hung on the lower part of the rail through the suspension device. The compartment comprises a power part and a passenger carrying part. The power part is provided with a driving device. The lower part of the rail is provided with a rack.The compartment is driven to run on the rail in a manner that a driving gear of the driving device is meshed and adapted with the rack. The suspension device comprises a first suspension component and a second suspension component which are positioned on the two sides of the rail separately and symmetrically arranged. The first suspension component and the second suspension component each comprise a suspension bracket and a tray suspension bracket. The tray suspension brackets are located at the lower parts of the suspension brackets correspondingly. The suspension brackets are each providedwith a walking and guiding component that runs on the rail. An annular slideway with a slideway notch is formed in each tray suspension bracket, a rotating assembly is arranged in the annular slideway, and the rotating assembly enters through the slideway notch and is connected with the annular slideway in a matched way. The monorail hanging rail car has the advantages of small turning radius, high climbing ability and safe running at corners.
Owner:秦皇岛鸿鼎轻工机械技术有限公司

On-line measuring method and device for outer diameter and ovality of large-diameter steel pipe end

ActiveCN102650516BMeasurement results are not affectedImprove stabilityUsing optical meansMeasurement deviceOvality
The invention relates to the field of steel pipe outer diameter and ovality measurement, particularly to an on-line measuring method and device for the outer diameter and the ovality of a steel pipe end. The on-line measuring method for the outer diameter and the ovality of large-diameter steel pipe end is as follows: obtaining the nominal data of a to-be-measured steel pipe for determining the axis position, setting the interval for an outer diameter laser displacement sensor, enabling a probe of the sensor to be directed at the axis for measurement and then obtaining the diameter D of the to-be-measured steel pipe, rotating the sensor for 180 degrees for measuring the outer diameter in the all peripheral direction, and obtaining the average diameter and ovality of the to-be-measured steel pipe. The on-line measuring device for the outer diameter and the ovality of large-diameter steel pipe end is characterized by including an industrial robot, an outer diameter measuring device and an axis detecting device. The standard industrial robot is adopted for carrying the measuring device and arranged around the to-be-measured steel pipe end, the non-contact measuring technology is adopted for measurement, and the on-line measuring device has high precision and speed, and excellent popularization and application prospect.
Owner:BAOSHAN IRON & STEEL CO LTD

Mould flat steel continuous reversible rolling machine unit and mould flat steel rolling method

The invention discloses a mould flat steel continuous reversible rolling machine unit and a mould flat steel rolling method. The mould flat steel continuous reversible rolling machine unit comprises vertical rolling mills and horizontal rolling mills, wherein the vertical rolling mills comprise a vertical rolling mill I and a vertical rolling mill II; the horizontal rolling mills comprise a horizontal rolling mill I and a horizontal rolling mill II; and the vertical rolling mill I, the horizontal rolling mill I, the vertical rolling mill II and the horizontal rolling mill II are arranged on a horizontal working surface sequentially according to a rolling direction. According to the mould flat steel continuous reversible rolling machine unit and the mould flat steel rolling method, which are provided by the invention, production of multi-size large-size mould flat steel and square steel with the thickness being 6 to 300 mm and the width being 100 to 1000 mm is realized by one production line, the quality precision of products is met, energy consumption is reduced, and the size and the range of the products are enlarged. Therefore, high market adaptive capability is achieved, and enterprises can organize production flexibly according to the market requirements and create more economic benefits.
Owner:DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1

Automobile chassis integrated control-oriented vehicle-mounted CAN-BUS testing and evaluation system

InactiveCN101776903AReal valid inputRealize open managementTotal factory controlProgramme total factory controlControl orientedManagement unit
The invention discloses an automobile chassis integrated control-oriented vehicle-mounted CAN-BUS testing and evaluation system, which comprises a CAN interface 7, a system bus and management unit 8, an LAN interface 9, a bus control node 10, an LAN 11 and an entire automobile simulator 12. The entire automobile-mounted CAN-BUS to be tested, consisting of a chassis CAN-BUS 1, an automobile body CAN-BUS 2, an automobile body gateway 3, a CAN instrument 4, an engine gateway 5 and an engine CAN-BUS 6, is connected with the bus control node 10 through the CAN interface 7; and the bus control node 10, the system bus and management unit 8 and the entire automobile simulator 12 are connected to the LAN 11 by the LAN interface 9. The invention provides an efficient and convenient vehicle-mounted CAN-BUS combination property testing and evaluation device for the product design and development of an integrated control type electric control automobile chassis.
Owner:SOUTHWEST JIAOTONG UNIV

Network video monitoring system based on FPGA chaotic encryption

The invention relates to a network video monitoring system based on FPGA chaotic encryption, comprising a server terminal, a client terminal and a system configuration terminal. The server terminal comprises a plurality of cameras, a video server, an encryption module and a signal sending module; the client terminal comprises a signal receiving module, a decryption module and a client terminal player; video frequency collected by the plurality of cameras is coded by the server, then input into the encryption module via the Ethernet and sent to the client terminal via the signal sending moduleafter encrypted; the signal receiving module of the client terminal receives the encrypted video data and then sends the data to the decryption module for processing and finally the client terminal player plays the video data; the encryption module and the decryption module are respectively an FPGA encryption board and a decryption board; the encryption process and the decryption process of the encryption module to video flow are as follows: the encryption module adopts a CPRS array which is cut and operates with a plain text data module 2, and then sent; and the receiving terminal of the decryption module obtains the same CPRS array, and then operates with a cryptograph module to realize decryption.
Owner:NANJING UNIV

Subsection encoding based timing sequence image dynamic service method and device

An embodiment of the invention provides a subsection encoding based timing sequence image dynamic service method and device. The method comprises the following steps: generating a multi-level timing sequence image tile model corresponding to a timing sequence remote sensing image; receiving request information of a user terminal; calculating row and column information of a layer where a requested timing sequence image tile is located based on layer information and location information; searching a timing sequence image tile corresponding to the layer information, the row and column information and time information, and returning the timing sequence image tile to the user terminal. The method has the advantages that the accurate time information of the image is integrated with tile service, and flexible and dynamic service for the timing sequence image tile is realized on the premise that lightweight and visualization of the image tile are guaranteed; by flexible organization of the image tile based on actual time, the problems of a traditional versioning method that time is not continuous and organization is not flexible are solved, and a new method for lightweight, dynamic and objective visualization of massive timing sequence images in the big data age is provided.
Owner:NAT GEOMATICS CENT OF CHINA

Electrical system modeling method and fault diagnosis system based on qualitative model

The invention relates to the field of fault diagnosis based on models and electrical system faults, in particular to an electrical system modeling method and a fault diagnosis system based on a qualitative model. The electrical system modeling method comprises the steps of determining variables used for describing the working state of each component, defining the types and the variable instances of all the variables, defining each component model, using an existing variable for describing all the working modes of the components, defining the transfer conditions of all the working modes in each component, building modules, instantiating the components in the modules, and describing the structure of the system according to the connecting relations between the components. The system comprises a visual modeling module, a communication module, a model verification module, a scene input module, a diagnosis module and a result displaying module. Through the electrical system modeling method and the fault diagnosis system, the structural knowledge of the system, the functional knowledge of the components forming the system and previous experiential knowledge can be comprehensively utilized to carry out abnormity evaluation and fault location on the current system state, and the electrical system modeling method and the fault diagnosis system are used for improving the accuracy of diagnosis and the distinguishability of diagnosis results.
Owner:HARBIN INST OF TECH

Clamping device for transverse deviation correction of ballastless track structure

ActiveCN109629353ASolve the cumbersome disassembly and assemblySolve the clampingRailway track constructionEngineeringCounterforce
The invention discloses a clamping device for transverse deviation correction of a ballastless track structure, belongs to the technical field of disease treatment for ballastless track structures ofrailways, and particularly relates to the clamping device for the transverse deviation correction of the ballastless track structure. The clamping device comprises a shedding-prevention holder and a clamping mandril, and the clamping mandril is composed of four parts including a length adjustment sleeve, a length adjustment lead screw, a connecting sleeve and a leveling end plate. The length adjustment of the clamping device is achieved through a sleeve-lead screw structure, and thus the change of spacing and clamping force of a counterforce structure (a limiting structure) and the track structure is adapted to. A spherical hinge structure is adopted for adjusting the clamping angle to a certain degree and the working condition that the structural stress surfaces at the two sides of the clamping device are not parallel can be adapted to. The shedding-prevention holder is adopted for solving the problems that detaching and installing are complicated, and the clamping mandril easily falls. Through the design of combination of multiple parts, the workload of spot operation is reduced. Through the light and compact structure, the weight is reduced on the premise of guaranteeing functions, and the operation convenience is improved.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
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