246results about How to "Choose flexible" patented technology

The invention discloses an external energy-consumption self-resetting bridge pier stud structure system and a realization method thereof, belonging to the field of bridgework. The structure system mainly comprises a bridge pier stud, a bridge abutment, an unbonded prestressed reinforcement, an external energy consumption device, a pier embedded part and a bridge abutment embedded part, wherein the bridge pier stud and the bridge abutment are connected by the unbonded prestressed reinforcement and the external energy consumption device, so that residual deformation can be effectively reduced, and energy consumption can be guaranteed. The external energy-consumption self-resetting bridge pier stud structure system is flexible in design and has specific structure stress. The unbonded prestressed reinforcement on the axis position of the pier stud can be used for generating self-resetting restoring force. The problem that the traditional bridge pier has larger residual deformation and cannot continuously serve after the earthquake loading action is solved. The bridge pier has enough strength and rigidity. The external energy-consumption self-resetting bridge pier stud structure system is realized in a cast-in-situ or prefabricating mode and is easy to construct and is a novel pier stud structure system which is advanced and practical and can realize quick replacement and repair after the earthquake..

The invention relates to an optimal power flow optimization method of distributed power supplies. The optimal power flow optimization method of the distributed power supplies includes the following steps: A, variable in a distribution network is initialized; B, load flow calculation is carried out on the distribution network; C, lines are judged to be overloaded or not, and active output force and reactive output force of an engine and the distributed power supplies are judged to overstep the boundary or not; D, if constraint equations are all met, a step E is continued, otherwise a step F is continued; E, an objective function is judged to be the minimum or not, if the objective function is the minimum, a step J is continued, otherwise a step F is continued; F, net loss correlation coefficients are corrected; G, a Jacobean matrix and a Hessian matrix are calculated; H, a problem of sequential quadratic programming is formed and the search direction and a step size are solved; I, output force at the position of a balancing node bus and output force of each distributed power supply are corrected, and the step B is jumped to; and J, an optimal power flow result is output. The optimal power flow optimization method of the distributed power supplies provides basis of access capacity calculation for determining the distributed power supplies to be connected in a power distribution network, is simple in calculation and low in complexity, and can rapidly calculate the output force of the distributed power supplies.

The invention provides a screen projection method and device and terminal equipment, and relates to the technical field of screen projection. The method comprises the steps that if a screen projectioninstruction is obtained, a real-time interface of a to-be-projected screen application program and equipment information of one or more receiving ends are obtained, first to-be-projected screen datacorresponding to all the receiving ends are obtained from the real-time interface according to the equipment information, and the first to-be-projected screen data are video streams, audio streams and/or user interface controls; and sending the first to-be-projected screen data to the corresponding receiving ends, so that each receiving end generates a corresponding display interface according tothe received first to-be-projected screen data. According to the embodiment of the invention, a screen projection mode with more abundant functions and more flexible operation can be realized.

The invention relates to the technical field of lithium ion battery manufacturing, and particularly relates to a sorting and grouping method for lithium ion batteries. The sorting and grouping method is widely applied to sorting and grouping of battery packs of various types of electronic and electrical equipment such as small digital electrical appliances, electric bicycles and electric automobiles. The sorting and grouping method comprises the following steps: firstly, spraying codes on or numbering single batteries, and collecting first capacity, voltage and internal resistance of the single batteries; and aging the single batteries, collecting second voltage, internal resistance and recovery capacity of the single batteries, carrying out data statistics on grouping factors, establishing the grading standard of each grouping factor of the single batteries, determining the level of each grouping factor of each single battery, and selecting the grouping factors according to practical conditions to carry out sorting and grouping. The sorting process is simple, the requirement on sorting equipment is simple, and thus the sorting and grouping cost is reduced; the method has the function of preferably selecting battery packs with long service life, unqualified battery cores can be eliminated, and thus undesirable effects of produced battery packs can be reduced.

The invention discloses a mixed induction type active electric power filter system. The mixed induction type active electric power filter system comprises a rectifier transformer, a filtering branch, a rectifier and the other filtering branch, wherein the other filtering branch comprises three passive filters and a voltage source inverter, the passive filters are connected to the voltage source inverter, the primary side of the rectifier transformer is connected to a three-phase power grid through connecting impedor, an epitaxy winding of the secondary side of the rectifier transformer is connected with the rectifier, and the passive filters are connected to three junction points between a delta winding and the epitaxy winding of the secondary side of the rectifier transformer in parallel respectively. According to the mixed induction type active electric power filter system, influence of frequency fluctuation of the power grid side and the high-capacity nonlinear load side on electric power filtering performance is eliminated; meanwhile, the problems that serious harmonic pollution, high additional loss of a master device, high vibration and noise, low system power factor and low system operation efficiency are caused by harmonic waves and idle work to an industrial power distribution and consumption system are effectively solved on the premise that electric power quality on the power grid side meets the national standard of China.

The invention discloses a TOA positioning estimation method and a precise positioning method based on the same. The positioning method comprises the following steps of: transmitting a multi-carrier digital television signal carrying positioning information, wherein the positioning information comprises the two-dimensional or three-dimensional coordinate position information and the positioning data of a transmitting end, and the positioning data is a known sequence; carrying out time-domain frame synchronization on the received multi-carrier digital television signal so as to obtain a rough transmission time-delay estimation value; intercepting the positioning data and calculating by utilizing the TOA positioning estimation method to obtain a fine transmission time-delay estimation value so as to obtain an estimation value of a distance between a receiving end and a transmitting end; and after the estimation values of the distances between the receiving end and a plurality of transmitting ends are solved, calculating to obtain the two-dimensional or three-dimensional position information and the two-dimensional or three-dimensional speed information of the position of a user according to the distance estimation values and the two-dimensional or three-dimensional coordinate position information. The invention has simple algorithm, high speed of positioning update, strong system compatibility and wide application range and can realize precise positioning.

The invention discloses an instruction set batch testing device and method for a processor. The instruction set batch testing device comprises a test case batch management device, a source file compiling device, a configuration file parsing device and a debugging device, wherein the test case batch management device is respectively connected with the configuration file parsing device and the source file compiling device, and the configuration file parsing device is connected with the source file compiling device and respectively connected with the test case batch management device and the debugging device. According to the instruction set batch testing device disclosed by the invention, the configuration file parsing device is utilized for generating an automatic test script, so that a great deal of testing work can be automatically implemented, a test result can be given out, and a user can be free of the complexity in compiling the test script and the inconvenience in manual observation of instruction behavior; and by constructing the test case batch management device for performing effective organization, management and maintenance on a test case library, a test implementation plan can be fast and accurately made, the user can complete the verification of the functions of the processor with high efficiency, and the test result is comprehensive and accurate.

The invention relates to a bandwidth-adaptive big iteration receiver. For a broadband multi-antenna orthogonal frequency division multiplexing (OFDM) communication system, the traditional minimum mean square error (MMSE) receiver and a Turbo/LDPC code decoder are combined together so as to compose the big iteration receiver which can provide interference cancellation; and the receiving schemes and the iterating parameters in various OFDM application contexts with different bandwidths are subjected to adaptive adjustment so as to reach the optimal system performance. The receiver provided by the invention has the following working steps: (1) detecting parameters, such as the size of bandwidth, the length of a transmission block, the number of code block, the code rate and the like, which are allocated to a user by a receiving terminal; and (2) calculating the time required for finishing detecting and decoding according to the obtained communication parameters. If a context cannot support the big iteration receiver under the real-time requirements, a receiving scheme is adjusted to be a non-iteration form; and if the iterative reception can be adopted, an MMSE soft interference cancellation-based big iteration detecting scheme which is in a double Turbo form is selected, and the parameters required for the big iteration are further determined.

The invention discloses a method for scheduling ACK/NACK for an LTE-TDD system. The method comprises the following steps: a network side makes statistics on distributing condition of UE downlink service data of each user equipment, for each UE, monitoring is carried out on that whether the downlink service data is scheduled or not; after schedule of certain UE downlink service data is determined, message is transmitted to the UE to inform a channel feeding back ACK/NACK; and the UE feeds back ACK/NACK on the corresponding channel according to the received message. The invention provides an ACK/NACK feedback proposal for the LTE-TDD system to ensure effective transmission of ACK/NACK under the circumstance that downlink sub-frame is more than uplink sub-frame. Corresponding to the method, the invention also provides an ACK/NACK dispatcher for the LTE-TDD system.

The invention discloses a resisting force dodging device for controlling a floor heave, and a construction method for the device. The resisting force dodging device comprises an anchoring system and a resisting force dodging system, wherein the anchoring system comprises a sleeper type anchoring beam, a prestressed anchor rod and prestressed anchor cables, and is used for providing anchorage force for the resisting force dodging device; the resisting force dodging system comprises slide components, an arc-shaped elastic steel strip and high-strength springs; the slide components are mounted at arch supports of a tunnel; the bottom of the arc-shaped elastic steel strip is fit with a pit bottom, and the two ends of the arc-shaped elastic steel strip are inserted into the slide components; the high-strength springs are arranged between the sleeper type anchoring beam and the arc-shaped elastic steel strip. The device adopts the concept that the resisting force dodging system and a base plate deform together, so that a problem that the deformation of the soft rock roadway floor heave is large is solved; the resisting force of the device increases along with the increase of the deformation, and finally, the deformation of the floor heave is controlled within a resisting force dodging space, so that the floor heave is effectively controlled in a highland stress soft rock roadway, and the application prospect is broad.

The invention discloses a multilink transmission method and device, a multilink receiving method and device, a storage medium and a terminal. the multilink transmission method comprises the steps: determining a link synchronization group which comprises a single main link and at least one auxiliary link, and enabling the at least one auxiliary link to be synchronous with the main link; and when synchronous transmission is carried out by adopting multiple links, transmitting different data packets on the main link and the auxiliary link respectively. According to the technical scheme provided by the invention, the data transmission efficiency is improved, and a feasible technical scheme is provided for multi-link synchronous transmission.

The invention discloses an unmanned aerial vehicle airborne platform-based vehicle type identification method and belongs to the technical field of video images. The method comprises the following steps of S1: adjusting the height of an unmanned aerial vehicle above the ground to a position suitable for vehicle type identification; S2: acquiring infrared image positive and negative samples used for vehicle target detection offline, performing characteristic extraction by utilizing a convolutional neural network (CNN), and performing support vector machine (SVM) training to obtain an SVM classifier model used for online vehicle type identification; S3: performing infrared photography by utilizing an infrared video camera to obtain a video image signal; and S4: performing sliding window sampling on a shot infrared image sequence, extracting vehicle type characteristics by utilizing the CNN, and inputting the characteristics in the classifier model obtained in the step S2 to perform classification. According to the method, the vehicle type identification can be finished in the day, at night and under the condition of severe weather condition and relatively low visibility by adopting the infrared video camera; and meanwhile, the method can be used for dynamically selecting a detection region, so that the flexibility of a detection system is improved.

The invention discloses an equipment control method and a mobile terminal. The method comprises the steps of collecting an image comprising at least one first class of equipment, displaying the image including the at least one first class of equipment in a display area, wherein the first class of equipment is terminal equipment at least having an image display function; establishing a first communication connection with the at least one first class of equipment; and when a corresponding operation command is detected via a control interface of first target equipment in the at least one first class of equipment, sending the operation command to the first target equipment, wherein the control interface is located at a display position in the display area of the first class of equipment, and is at least used for providing an interface for controlling output information of the first class of equipment or an operation parameter of the first class of equipment.

The embodiment of the invention provides a service object recommendation method and device and electronic equipment. The service object recommendation method includes: acquiring anchor attribute data,audience attribute data and multiple pieces of service object attribute data of a live-streaming room; selecting a target service object in multiple service objects on the basis of the anchor attribute data, the audience attribute data and the multiple pieces of service object attribute data; and displaying the target service object in the live-streaming room. By adopting the embodiment of the invention, the target service object with a higher putting effect can be selected to be displayed in the live-streaming room, thus the service object displayed in the live-streaming room can be enabledto have a higher display effect, and a utilization rate of network resources can be increased.

The invention belongs to the technical field of vibration reduction and noise reduction, and in particular, relates to a metamaterial vibration isolating technology. A ultralow-frequency and shock-resistance metamaterial vibration isolating device comprises a metamaterial vibration isolating part (1), a lower positioning cover (2), an upper positioning cover (3), an inner limiting shell (4), an outer limiting shell (5), a lower bolt set (6) and an upper bolt set (7). The ultralow-frequency and shock-resistance metamaterial vibration isolating device theoretically can realize any low frequency range, so that the metamaterial vibration isolating device can bear higher static load on an online elastic deformation section, and can realize ultralow-frequency vibration isolating effect of a vibration isolating system on a ultralow-frequency vibration isolating section; and the metamaterial vibration isolating device is high in shock resistance, and can improve the safety of the vibration isolating system. The metamaterial vibration isolating part is not limited by a base material, so that the adaptability is wide.

The invention relates to a water-based rechargeable zinc ion battery based on an organic electrode material, and belongs to the field of secondary batteries. A device comprises a zinc metal negative electrode, a diaphragm and a positive electrode based on a polymer. An electrolyte is a zinc sulfate aqueous solution. The positive electrode of the device is mainly a polymer electrode material attached to porous activated carbon, and plays a decisive effect on the energy storage capacity, the voltage window and the electrochemical behavior. The organic electrode material disclosed by the invention shows relatively high specific capacitance and excellent cycling performance. The organic electrode material and the activated carbon are combined, so that the electrode has the characteristic of high mass carrying capacity. The unit area capacity of the prepared device is in the level of F/cm2 or mAh/cm2. The maximum voltage of the device is between 1.6V and 1.9V, depending on the choice of thepolymer electrode. The polymer/porous activated carbon composite material electrode disclosed by the invention can be used for preparing the water-based zinc ion secondary battery with high energy density and long cycle life.

The invention discloses a signal generation method of a low-interference multispeed multi-cell quasi-synchronous code division multiple access (CDMA) communication system. The method comprises the steps: a spread spectrum sequence code group is an Hadamard matrix set with certain idealized characteristics formed by Bent functions and a Walsh-Hadamard orthogonal sequence set; a sequence set with the characteristic of a similar zero correlation zone (ZCZ) sequence is obtained by calculating with a pair of complementary sequence sets by utilizing the Hadamard matrix set; and a plurality groups of sequence sets with the similar ZCZ sequence characteristics are obtained by carrying out Cartesian convolution operation with the orthogonal sequence set by utilizing the similar ZCZ sequence set. When a system maximum synchronization error and a channel maximum multipath delay spread are in the stated range, the system interference can be reduced greatly. The parameters of the spread spectrum sequence code group and the system efficiency can be adjusted and flexibly selected according to the practical factors. Therefore, the requirements of power control and synchronization by the CDMA communication system are reduced, and the complexity of system realization is lowered.