125results about How to "No limit" patented technology

The invention discloses a fast decoupled flow calculation method for power systems, which comprises the following steps of: inputting original data and initializing voltage; forming an admittance matrix; forming correction equation coefficient matrixes B' and B'' and performing factor table decomposition; performing P-theta iteration, and correcting a voltage phase angle; performing Q-V iteration, and correcting voltage amplitude; judging whether the iteration is converged; and calculating node power and branch power. The method requires that the P-theta iteration and the Q-V iteration are all converged in the same iteration and the iteration process is finished, so that the algorithm frame is simpler, and the flow is clearer. The sparse matrix technology is not adopted, so the matrix elements are convenient to access and calculate, and the programming is simple; the correction equation coefficient matrixes are stored according to n order, number change of nodes is avoided, and the programming difficulty is reduced; and the calculation amount is reduced through reasonable logic judgment, the calculation speed is obviously improved and the requirement of scientific research can be completely met. The fast decoupled flow calculation method also can process power systems with a plurality of balance nodes.

The invention discloses a clock synchronization method for synchronous Ethernets, as well as a synchronous information sending/receiving method, device and apparatus. The clock synchronization processing performed by a network element on a looped network comprises the following steps: determining the current available clock sources, wherein line clock sources with clock identifications identical to the MAC (media access control) address of the network element can not be used; selecting a currently-used clock source from the determined current available clock sources according to the quality grade and priority of the clock sources; and transmitting a clock within the looped network, and transmitting the clock identification and clock quality information of the clock by an ESMC message, if a line clock source transmitted from the inside of the looped network is used currently, taking the clock identification of the line clock source as the transmitted clock identification, and if a clock source accessed from the outside of the looped network is used currently, taking the MAC address of the network element as the transmitted clock identification. A clock synchronization control device in the network element comprises a clock source selection device and an information transmission device. In the invention, through taking the MAC address of the network element as the clock identification, the problem that clocks on the looped network are looped is solved, and an operation of manually configuring clock identifications is not required.

The invention relates to an electrodynamic force vehicle power supply management system, which is used for managing a serial battery pack to charge and discharge. The system comprises a charging control subsystem, a discharging driving subsystem and a battery balancing control subsystem, wherein the battery balancing control subsystem is used for controlling the charging and discharging processes according to the sampling of the terminal voltage of the serial battery pack and the physical quantity of each monomer battery, and a control command is provided for the charging control subsystem and the discharging driving subsystem. The charging control subsystem is used for providing a charging power supply for the serial battery pack during the charging operation, and the discharging driving subsystem is used for carrying out large-current balancing discharging on single or a plurality of monomer batteries which achieve a balancing discharging voltage value in the serial battery pack. The electrodynamic force vehicle power supply can be used for managing multiple serial lithium, plumbic acid, nickel hydride and super capacitance batteries to charge and discharge the battery in a balancing mode.

The invention discloses a functional gradient composite structure wear-resistant transparent super-hydrophobic coating and a preparation method thereof. Specifically, the method consists of: firstly coating a substrate with a polyurethane modified reinforced bonding layer, then conducting coating of a polyurethane and super-hydrophobic compound transition layer to obtain a polyurethane/polyurethane and silicon dioxide transition layer compound coating, and finally performing coating of a micro-nano super-hydrophobic layer, thus forming a polyurethane/polyurethane-silicon dioxide/silicon dioxide functional gradient composite structure wear-resistant transparent super-hydrophobic coating. The preparation method provided by the invention has the characteristics of simple process, easy operation, normal pressure and low cost, the prepared functional gradient composite structure wear-resistant transparent super-hydrophobic coating can be used for water and fouling prevention on ship surface coatings, automotive glass surfaces, mobile phone screen surfaces and other transparent materials.

Using data processing method, video terminal forms 'summation-difference beam of digital single pulse' and generates information of angular error. Based on information of angular error to change weight coefficient of digital single pulse beam, the method moves beam to track target. The digital track system of single pulse possesses capability for tracking multiple targets. Being formed from digital single pulse beam, software module can be utilized in superposition. Thus, how many pieces of software module are superposed dependent on how many targets needed following.

The invention relates to an automatic paper feeder of an automatic paper shredder and an automatic paper-feeding paper shredder thereof. The automatic paper feeder mainly comprises a paper-feeding plate, a pressuring part, paper-feeding rollers and a throwing hole, wherein the paper-feeding plate is positioned on the upper part of the paper shredder; taking the throwing hole as a standard symmetry point, the throwing hole is low and both sides are high, and documents to be shredded is guided to the throwing hole; the pressuring part is arranged on the upper part of the throwing hole, and presses on papers on the paper-feeding plate; the throwing hole is positioned on the middle part of the paper-feeding plate, and the papers on the paper-feeding plate are sequentially thrown into a channel of a paper shredding part from the middle part of the throwing hole from the bottom to the top; and the paper-feeding rollers are positioned on both sides of the throwing hole to be symmetrically distributed, and transmits the papers on the paper-feeding plate to the throwing hole. The automatic paper feeder of the automatic paper shredder can place the documents to be shredded in the throwing hole in one step, enables the paper shredder to automatically and quantificationally shred the papers, shortens the operation time, improves the problem of being hung because of corrugation or wrinkledness, has simple and easy operation mode, and does not have limit to the number of shredded papers.

The invention discloses a method and system for receiving and playing boot video advertisements of digital television set-top boxes, and belongs to the technical field of interactive digital television set-top boxes. According to the method, firstly, a front-end advertisement service management server sends boot video advertisement files to a front-end boot video advertisement broadcasting server, the front-end boot video advertisement broadcasting server broadcasts the boot video advertisement files at designated frequency points of digital television networks, after the digital television set-top boxes are powered up and started up, related initialization is conducted, in the initialization process, the boot video advertisement files are received at designated frequency points, and after the boot video advertisement files are received, the digital television set-top boxes play the boot video advertisements. The method and system give full play to the advantages such as large bandwidth resources and bandwidth guarantee of a digital television network broadcast channel, broadcast the boot video advertisement files at a higher rate, and can complete receiving of the boot video advertisement files in a short time at the starting-up state of the set-top boxes, and meanwhile the number of the set-top boxes for receiving the boot video advertisement files is not limited.

The invention discloses a method for controlling plane data interaction in a distributed system, comprising the following steps: initializing a system: configuring all combinations for controlling the plane data interaction among board cards, allocating a multicast and a virtual local area network (VLAN) for each combination, forming the correspondence between a data interaction port group and the multicast, adding an Ethernet switch chip of a switch board and an Ethernet port connected with each board card to the multicast in accordance with the correspondence, and carrying out quality of service (QoS) configuration on the Ethernet switch chip in accordance with the type of the data transmitted by a control plane; when the data interaction is carried out on the control plane, taking the source board card of sending data as data packets to encapsulate an Ethernet frame head; sending the encapsulated frame head containing an Ethernet frame of an objective multicast address to the Ethernet switch chip; and after the Ethernet switch chip receives Ethernet frames, performing data interaction in accordance with the objective multicast address. The method has the advantages that the cost is low, the communication efficiency is high, the number of the board cards is not restricted, the practical applicability is high, the implementation is simple, and a QoS function is provided.

Embodiments of the invention disclose an image display method and apparatus, and belong to the technical field of electronics. The method comprises the steps of obtaining a plurality of to-be-synthesized graphic layers corresponding to a first screen and a plurality of to-be-synthesized graphic layers corresponding to a second screen through a GPU (Graphic Processing Unit) in a dual-screen terminal; synthesizing the to-be-synthesized graphic layers corresponding to the first screen through the GPU, storing a synthesized graphic layer in a first cache region, synthesizing the to-be-synthesized graphic layers corresponding to the second screen through the GPU, and storing a synthesized graphic layer in a second cache region; and obtaining a first image through a first channel of a hardware synthesizer, transmitting the first image to the first screen for performing display, obtaining a second image through a second channel of the hardware synthesizer, and transmitting the second image to the second screen for performing display. By adopting the method and the apparatus, the first screen and the second screen can be supported to display the images at the same time.

The invention provides an automatic wild animal hair collecting device for a narrow path, and belongs to wild animal studying equipment. According to the device, a base, a collecting hand storage box with hair, a standby collecting hand storage box, a horizontal sliding rail, an electromotor, a sensor, a power supply and an automatic control assembly are installed on a bottom seat, an assembling and disassembling assembly composed of an upper assembling and disassembling hand, a lower assembling and disassembling hand and a stand column is assembled on the horizontal sliding rail, a main shaft is assembled on the base, a rotating barrel assembled with stepping motors and mechanical arms is installed on the main shaft, and a hair collecting part composed of a collecting hand and a rubber thorn ball is installed on each mechanical arm. The collecting device is high in automation degree, good in sampling effect, free of harm to wild animals, high in applicability and capable of saving manpower resources.

The invention discloses a region coverage optimization method suitable for a video sensor network with an adjustable sensing direction. The method comprises the following steps: building a mathematical model of directed sensor nodes by extracting parameters such as sensing directions, sensing radiuses and coordinate positions of video sensor nodes; building a monitoring region model after gridding a monitoring region of the network; and building a sensor node sensing region model based on the characteristic of limited sensing ranges of the sensor nodes. Through a built region coverage model, problems are solved through a particle swarm algorithm specific to the optimization goal of improving the network coverage. Through adoption of the region coverage optimization method based on the particle swarm algorithm suitable for the video sensor network with the adjustable sensing direction, region coverage is maximized, so that the resource utilization ratio and service quality of the video sensor network are improved effectively.

The invention provides a chip packaging structure and a manufacturing method thereof. The chip packaging structure comprises a substrate which is provided with a flow guide hole penetrating through the front surface and the back surface of the substrate; a first chip which is electrically connected with the substrate; a flow guide assembly which is arranged on the base plate, wherein a heat dissipation pipeline is arranged in the flow guide assembly, and the heat dissipation pipeline is communicated with the flow guide holes; a second chip which is arranged at one side, deviating from the first chip, of the flow guide assembly and is electrically connected with the substrate; and a plastic package body which packages the first chip, the flow guide assembly and the second chip. According tothe chip packaging structure provided by the invention, more efficient internal heat dissipation of the multi-chip packaging body is realized, and the problem of insufficient heat dissipation efficiency of a surface heat dissipation structure is effectively solved; circuit leading-out of the two chips is not interfered by the diversion assembly, and the number of I/O ports of the chips is not limited.

The invention relates to the technical field of ore dressing, and provides a non-ferrous metal ore pre-dressing and waste discarding method. The non-ferrous metal ore pre-dressing and waste discarding method comprises the following steps: first coarse ore, first fine ore and first qualified ore are obtained through crushing and first screening and grading, the first coarse ore is subjected to pre-dressing and waste discarding through intelligent ore dressing, gangue tailings in the first coarse ore are removed, the remaining first coarse concentrate is crushed and then subjected to second screening and grading, and second fine ore and second qualified ore are obtained; and finally, the first fine ore and the second fine ore are subjected to pre-dressing and waste discarding through dense medium ore dressing, gangue tailings in the first fine ore and the second fine ore are further removed, and concentrate obtained through dense medium ore dressing is qualified ore. In addition, according to the invention, intelligent ore dressing or dense medium dressing can be independently used for pre-dressing and waste discarding, and the process steps are simpler. The method is high in automation degree, high in ore dressing accuracy, high in recovery rate for nonferrous metal ore, high in waste discarding rate, free of limitation on ore types, and wide in application range.

The invention discloses a multi-vehicle monitoring system based on Beidou satellite navigation. Terminal equipment for positioning and navigating by using a Beidou satellite navigation system obtainspositioning information of a vehicle. The multi-vehicle monitoring system comprises an information acquisition subsystem, a data processing subsystem, a map display subsystem, a monitoring platform and a remote command subsystem, real-time position information of the vehicle can be monitored at the same time through a same page, and an operator can freely adjust the number, the size and the like of vehicles in a monitoring screen. The multi-vehicle monitoring system based on the Beidou satellite navigation provided by the invention has the characteristics of being simple, high in performance,good in usability and almost no delay of vehicle position information.

The invention discloses a device and a method for superimposing and keeping out video images. The device comprises a controller, a storing device, a region information resolver and a superimposer, wherein the controller is used for generating information and content data required to be superimposed and kept out in each image region, organizing the information and the data of each region, writing the information and the data into the storing device, and sending a starting address notice to the superimposer; the storing device is used for storing the information and the content data which are organized by the controller and are required to be superimposed and kept out in the image regions; the region information resolver is started according to a command of the superimposer and is used for reading the information and the content data required to be superimposed and kept out from the storing device, resolving the obtained information on superimposition and keeping out, and transmitting the information and the content data to the superimposer; and the superimposer is used for superimposing and keeping out the image regions according to the information and the content data which are transmitted by the region information resolver and are required to be superimposed and kept out. The device and the method have high convenience and robustness.

The invention discloses a sensing dielectric film based on molecular imprinting nanospheres as well as a preparation method and application thereof. The sensing dielectric film is prepared by the following steps of: (1) synthesizing the molecular imprinting nanospheres as a film formation component raw material through a microemulsion polymerization process or a precipitation polymerization method; and (2) mixing the molecular imprinting nanospheres obtained in the step (1) and an auxiliary film formation material in a film formation solvent, and spin coating and curing on a non-conductive orconductive substrate by utilizing a spin coating method to form the sensing dielectric film based on the molecular imprinting nanospheres. The dielectric film has large selectable range of the variety of the molecular imprinting polymers, and effectively avoids the problem of mismatching of solvents in the processes of imprinting polymerization and film formation.

The invention discloses pencil board production equipment which comprises a main workbench, a downward pressing device, a side pressing device, a limiting device, a returning device and a cutting device. The downward pressing device, the side pressing device, the limiting device, the returning device and the cutting device are arranged around the main workbench. The pencil board production equipment can automatically cut multiple pencil boards, improves the efficiency, has no limitation for the wood variety, and is applicable to various varieties.