20results about How to "Save communication resources" patented technology

The present disclosure provides a time division duplex based semantic data transmission method and related equipment. The method comprises: a base station modulating and processing first user data corresponding to semantic data to obtain a first modulation sequence; the base station determining a first number of time-frequency resource blocks required for mapping the first modulation sequence to a first time-frequency resource; the base station judging whether the mapping of the first modulation sequence to the first time-frequency resource spans a time slot to obtain a first time slot span judgment result; the base station mapping the first modulation sequence to a first time-frequency resource with a first number of time-frequency resource blocks based on the first time slot span judgment result to obtain a first time-frequency signal, and sending the first time-frequency signal to a user terminal through a downlink; and the user terminal mapping the second modulation sequence to a second time-frequency resource with a second number of time-frequency resource blocks based on a second time slot span judgment result to obtain a second time-frequency signal, and sending the second time-frequency signal to the base station through an uplink.

The application relates to a data processing system, method and device. Each first intermediate result output by each map node is aggregated by an aggregation module to obtain an aggregation file containing a plurality of second intermediate results. Then, a reduce task is generated according to the second intermediate results in the aggregation file, and the reduce task is distributed to a reduce node. For the reduce node, one communication is needed to obtain one reduce task, so that the communication resource of the reduce node can be effectively saved.

The invention discloses a dynamic event triggering preset time fault-tolerant control method considering a non-affine fault. The method comprises the following steps: carrying out online approximation on an unknown nonlinear term in a dynamic decoupling model by adopting a fuzzy logic system to obtain an optimized system model; constructing a segmented preset time performance function, and introducing an instruction filter based on a dynamic surface control technology to process a virtual control signal of the constructed adaptive virtual control law so as to obtain a filtering error; constructing a dynamic signal compensation mechanism based on the filtering error in combination with a sectional preset time performance function, and obtaining a compensated final tracking error; and constructing a dynamic event triggering mechanism to obtain a final fault-tolerant controller, and realizing dynamic event triggering preset time fault-tolerant control considering the non-affine fault according to the final fault-tolerant controller. According to the method, the technical problems of uncontrollability of convergence time, influence of actuator faults and nonlinearity on control performance and limitation of communication and computing resources in the existing method are solved.

The application discloses a kind of concealed communication detection methods based on federal learning, including the following steps: the sample data transmitted by several time slots antennas is stored in the form of matrix;Determine global model, center server initializes global model;Center server distributes initialized global model to user;Participating node downloads global model from center server, and uses local data to train and update local model with downloaded global model as local model;Participating node uploads local model to center server, and center server receives all local models and carries out model aggregation update, forms new global model;Center server distributes new global model to all training nodes, and carries out iterative training;User detects local data with the final updated global model, judges whether concealed communication data is contained in physical layer signal, and completes classification detection task.The application saves communication resources and protects data security.

The application discloses a method and device for determining training data, and relates to the technical field of computers. The method comprises the following steps: acquiring a training data set; for each training party, based on the identification of the data, the data is cyclically distributed to each computing node in the training party; based on the preset data amount and the total number of computing nodes contained in the training party, the data amount of each computing node in the training party to acquire data in each round of training is determined; for each computing node in each training party, based on the preset data amount, the total number of computing nodes contained in the training party and the data index identification adopted by the computing node in the last round of training, the data index identification adopted by the computing node in the current round of training is determined; based on the determined data amount and the adopted data index identification, the training data used by the node in the current round of training is determined. The method can ensure the accuracy of vertical federated learning.

The invention relates to the technical field of parking, in particular to a parking automatic timing system and method. The system comprises a compass sensor, a display, a communication module and a control module, wherein a timing unit is arranged in the control module; the control module is used for receiving the direction change signal and judging whether the vehicle is in a stopped state or not, if yes, the display is converted and controlled to display parking time information according to the current time calculated by the timing unit and preset rule requirements, and the whole process is automatically detected by the compass sensor; the user does not need to carry out other operations when getting off the vehicle, so that the conditions that the parking time is wrongly updated, the parking time is not updated or a time notice board is forgotten after the user parks the vehicle are avoided.

The application provides a processing method and device in a virtual scene, electronic equipment, a computer readable storage medium and a computer program product; the method comprises: displaying a virtual scene; in response to triggering an operation of a first virtual object holding a virtual weapon, controlling the first virtual object to hold the virtual weapon, and displaying a sight of the virtual weapon in the virtual scene; in response to the sight moving from outside a first adsorption area to inside the first adsorption area, automatically adjusting a shooting direction of the virtual weapon, so that the sight of the virtual weapon is automatically adsorbed onto a second adsorption area in a second virtual object; wherein the first adsorption area is an area surrounding the second virtual object, and the second adsorption area is bound to the second virtual object along a direction penetrating at least part of a skeleton of the second virtual object. Through the application, the efficiency of human-computer interaction in the virtual scene can be improved.

The application discloses a kind of communication link perception multi-agent dynamic event trigger consistency methods, comprising S1: the communication network topology graph of information exchange between multi-agent is established;S2: determine the dynamics equation of multi-agent system;S3: introduce adaptive control, design complete distributed consistency control input strategy based on event trigger;S4: the solution of algebraic riccati equation obtains feedback gain matrix;S5: based on Lyapunov theorem and channel capacity parameter, design communication link perception dynamic event trigger control strategy;S6: reach multi-agent consistency by complete distributed control input strategy and communication link perception dynamic event trigger control strategy;The communication link perception dynamic event trigger mechanism of the application is completely distributed, through adaptive coupling gain, control input adaptive adjustment, without relying on global information related to network topology, realize and apply in large networked multi-agent system.

The invention provides a charging control method and charging equipment. The charging control method provided by the invention comprises the following steps: when request charging information is received, sending a charging strategy request to cloud equipment according to the request charging information; determining reference charging power of the charging equipment based on a charging strategy fed back by the cloud equipment; acquiring actual grid-connected power between the alternating-current bus and the power grid and actual charging power of the charging equipment through the intelligent electric meter; determining redundant power according to the actual grid-connected power and the actual charging power; determining target charging power of the charging equipment according to the reference charging power and the redundant power; and generating a control signal according to the target charging power and sending the control signal to the charging equipment, wherein the control signal is used for adjusting the actual charging power of the charging equipment. According to the charging control method provided by the invention, the charging cost can be better reduced while the charging requirement of a user is met.

This invention discloses a method for implementing a fault-tolerant satellite attitude tracking controller based on event-triggered learning, comprising the following steps: S1, establishing a mathematical model of satellite attitude actuator failure; S2, defining a tracking error vector and designing a satellite angular velocity command signal based on the established mathematical model; S3, designing an interference observer based on external interference, and then designing a controller and adaptive law; S4, for cases where the additive failure of the actuator is unknown, introducing a fuzzy logic system to approximate it; and designing event triggering conditions, satisfying the following condition: the weights of the fuzzy logic system are only updated when the additive failure of the actuator triggers the designed event triggering conditions. This invention can save communication resources from ground base stations to satellites and reduce the communication burden.

The present application relates to the field of data acquisition, and relates to a power distribution system multi-data fusion acquisition method based on artificial intelligence. The present application acquires the values of high-frequency electrical parameters and low-frequency environmental parameters corresponding to each acquisition device in the power distribution system in real time, judges whether there is a transient mutation, if there is, obtains the trend consistency index with the adjacent acquisition device to judge whether the corresponding acquisition device is normal, if normal, prioritizes the abnormal parameters, and sequentially performs intelligent filtering processing on the tracking acquisition data of each abnormal parameter, when the fault characteristic signal is identified, the transient mutation value of each abnormal parameter is retained, otherwise, the corresponding transient mutation value is removed, the clock drift between each acquisition device is compensated using a unified time reference, the characteristic data stream referenced by high frequency and low frequency is generated respectively, and uploaded to the cloud analysis platform and mapped to each device node, so that the data acquisition is more accurate and reliable, and provides support for accurate analysis.

This disclosure provides a semantic data transmission method and related equipment based on frequency division duplex (FDM). The method includes: a base station modulating first user data corresponding to semantic data to obtain a first modulation sequence; the base station determining a first target combination method of the first modulation sequence based on the semantic type of the semantic data; the base station performing time-frequency resource mapping processing on the first modulation sequence based on the first target combination method to obtain a first time-frequency signal, and transmitting the first time-frequency signal to a user terminal via a downlink; the user terminal modulating second user data corresponding to the semantic data to obtain a second modulation sequence; the user terminal determining a second target combination method of the second modulation sequence based on the semantic type of the semantic domain information; the user terminal performing time-frequency resource mapping processing on the second modulation sequence based on the second target combination method to obtain a second time-frequency signal, and transmitting the second time-frequency signal to the base station via an uplink.

The application discloses a voice signal receiving and transmitting method and device in the technical field of voice signal transmission, and the receiving method comprises the following steps: obtaining second fused semantic features; performing dimension recovery, inverse normalization and splitting processing on the second fused semantic features to obtain first transmission semantic features and second transmission semantic features; performing feature processing on the first transmission semantic features to obtain the first transmission semantic features after feature processing; performing dimension adjustment on the second transmission semantic features to obtain the second transmission semantic features after dimension alignment; decoding the first transmission semantic features after feature processing to obtain reconstructed audio signals with optimal evaluation voice quality; and classifying the second transmission semantic features after dimension alignment to obtain prediction scores. The application can improve the reliability and security of voice transmission tasks in a low signal-to-noise ratio condition while saving communication resources.

The embodiment of the invention provides a beam control method and device of a group, electronic equipment, a medium and a product. The method comprises the following steps: receiving a group paging message sent by current satellite network equipment, wherein the group paging message comprises a dynamic coverage range of a beam of the current satellite network equipment; determining a plurality of expected positions of the plurality of terminal devices according to the mobile information of the plurality of terminal devices in the group and the dynamic coverage range; and determining an out-of-range position outside the dynamic coverage range from the plurality of expected positions, and sending the out-of-range position to the current satellite network equipment, so that the current satellite network equipment performs beam control and adjusts the dynamic coverage range according to the out-of-range position. According to the scheme, the terminal equipment in the group only reports the specified position to the satellite network equipment according to the group paging message sent by the satellite network equipment, so that the reporting frequency is reduced, and communication resources are saved.

In order to solve the problem of product quality detection in an automatic packaging production line, the invention provides a packaging production line detection control method based on an event trigger mechanism, and the method comprises the steps: building a mathematical model of a detection control system through a linear time delay system model with uncertainty; a state predictor based on a system state observer and an event controller are introduced, and then a state feedback controller using the structure is provided. Firstly, a state observer is designed based on the measurement output of the system to estimate the real-time state of the system. Secondly, in consideration of network control signal delay, a state predictor is provided for calculating the future state of the system after time delay. And finally, an event triggering strategy is designed, a state feedback controller is designed, the influence of network signal delay is eliminated, the feasibility of the designed control system is ensured, and the event triggering interval of the system has a right lower bound, that is, Zeno Behavior does not exist. Compared with a control system adopting a time period triggering strategy or a general event triggering strategy, the method has the advantages that the triggering times of the control signals are obviously reduced, the communication resources of a control channel are saved, the action of the controller is triggered as required, the mechanical wear and the energy consumption are reduced, the deviation is corrected in real time, and the control precision is ensured.

The application discloses an event-triggered fault-tolerant control method of a double-drive gantry platform and relates to the motion control technical field of a chip mounter gantry platform. The application is aimed at solving the problems of the double-motor interconnection driving mode of the control system of a double-drive linear motor gantry platform of a chip mounter, the motor failure risk, the position error, the complex modeling and the uncertain working condition. The application designs a preset performance virtual controller, a fault-tolerant feedback controller, a fault-tolerant adaptive law and an event-triggered robust controller, respectively, and uses the sum of the outputs of the controllers and the adaptive rate as the total control signal of the double-drive gantry platform of the chip mounter. The total control signal is used for preset performance event-triggered fault-tolerant control of Y-axis double motors of the double-drive gantry platform of the chip mounter. Under the premise of limited calculation and communication resources, when the platform fails, the application can continue to stably operate under the preset performance, and is suitable for the control field of the double-drive gantry platform.

The invention discloses a self-adaptive preset time period event trigger control method for a floating-based space robot. The method comprises the steps of firstly establishing a space robot dynamic model; secondly, introducing a nonlinear mapping function and a barrier Lyapunov function, converting a state constraint control problem into an unconstrained stability problem, and ensuring that a tracking error is converged within a preset time; furthermore, a periodic event triggering mechanism is designed, and through discrete sampling and triggering condition judgment, the updating frequency of a control signal is greatly reduced, and communication resources are saved; and meanwhile, the uncertainty of the system model is adaptively compensated by adopting a radial basis function neural network. According to the method, the control problem of the free floating space robot in the aspects of state constraint, resource saving and preset time performance is effectively solved, and the reliability, safety and engineering practicability of the system are improved.

The application discloses a spacecraft formation event-triggered attitude coordination control method considering communication time delay, comprising the following steps: according to the communication topology structure of a spacecraft formation system, an attitude dynamics model of the spacecraft formation is established, which can consider external disturbance, model uncertainty and communication time delay; based on the attitude dynamics model, a nonlinear observer is constructed, which can observe the collective nonlinear term of the spacecraft formation system; based on the nonlinear observer, an event-triggered attitude coordination control law and an event-triggering mechanism are designed; according to the event-triggered attitude coordination control law, the attitude and angular velocity of the formation spacecraft are controlled, and according to the event-triggering mechanism, it is determined whether the corresponding event-triggered attitude coordination control law of the formation spacecraft needs to be updated and whether the state information of the formation spacecraft needs to be sent to the adjacent formation spacecraft. The application can consider the influence of disturbance, uncertainty and communication time delay, save the energy, communication and computing resources of the system while ensuring good control performance.

The invention belongs to the technical field of land-air wheel wing robots, and particularly relates to a multi-mode switching control method, system and device for a land-air wheel wing robot. Comprising the steps that a switching mechanism depending on the state of the air-ground wheel wing robot switching control system is constructed, internal dynamic variables are introduced, a dynamic event triggering sampling mechanism is obtained, an event triggering threshold value is adjusted in real time along with the system state through self dynamic updating, and a state sampling value of the air-ground wheel wing robot switching control system is obtained through calculation. Switching control input is obtained based on the state sampling value and subsystem controller gain calculation, then a switching dynamic event trigger control scheme is obtained, and switching dynamic event trigger controller parameters are determined according to the subsystem parameter constant matrix and the subsystem transfer rate. By adopting the technical scheme provided by the invention, more accurate and flexible state switching control is realized, and the effects of optimizing energy consumption, improving efficiency and saving communication resources are achieved while the safety is ensured.

This invention provides a cable fault location device and method based on analog latching and vector fingerprinting, belonging to the field of cable fault monitoring technology. It includes: an electromagnetic sensing module that detects electromagnetic traveling waves and generates a first trigger signal when the rate of change exceeds a threshold; an analog time latching module that responds to the first trigger signal by timing and recording information; a vector fingerprint verification module that collects vibration signals and generates a second trigger signal according to a verification criterion; and a main control and communication module that wakes up in response to the second trigger signal, reads the timing information to determine the time backtracking amount, calculates the true time difference by combining the arrival time of the sound wave, calculates the fault distance according to the corrected sound velocity, and sends the result. The beneficial effects are: by eliminating the influence of MCU wake-up delay on the time reference through analog time latching, a reliable basis for high-precision ranging is provided; by using the vector fingerprint verification criterion to distinguish radial shock waves from external interference, the false alarm rate is greatly reduced, saving energy and communication resources.