137 results about "Interference problem" patented technology

The invention discloses a miniature piezoelectric driving type detection contact integrated laser module and a contact type calibration method, particularly relates to the technical field of precision measurement, is used for solving the problem of dynamic time-varying interference of high-voltage driving pulses on micro-force signals, and is an interference coupling path synchronous acquisition and dynamic resolving technology based on a distributed electromagnetic probe. Online identification of transient interference energy distribution characteristics is realized; a multi-dimensional parameter fusion mechanism of an interference-response dynamic model quantifies cross-domain characteristics of interference energy, system response and signal noise into a comprehensive suppression coefficient, and reverse compensation waveform injection and adaptive filter dynamic adjustment are performed, so that full life cycle offset of common-mode noise is realized, and damage of residual interference to closed-loop control is avoided; through cross-domain collaborative analysis of laser-mechanical data, a self-healing iteration mechanism of contact type calibration parameters is established, progressive pollution of dynamic interference to a calibration reference is eradicated, and long-term consistency of detection precision under complex working conditions is ensured.

The embodiment of the invention relates to the technical field of electronic equipment, and provides an anti-interference structure, a shell assembly and electronic equipment, the anti-interference structure comprises an antenna, a camera module and a conductive part, and the conductive part is located in a space between the antenna and the camera module. Electromagnetic waves radiated by the antenna can excite a first standing wave propagating along a first direction on the conductive part, the first standing wave comprises a first electric field, the first electric field can enable the conductive part to generate a first current conducted along the first direction towards one side of the first standing wave, and the anti-interference structure comprises a first conduction loss part; the first conduction loss part is located on the side, facing the first standing wave, of the conductive part, and the first conduction loss part is made of a current loss material; or the material of the part, facing one side of the first standing wave, of the conductive part is a current loss material. According to the anti-interference structure, the shell assembly and the electronic equipment provided by the embodiment of the invention, the problem of interference of the first standing wave on the camera module is effectively improved.

The invention relates to the technical field of rail transit, and discloses a system for reducing self-interference between APs in a rail transit vehicle depot, which comprises trackside APs, vehicle depot APs and a vehicle-mounted MR. The trackside APs are deployed on a rail traffic line, a same-frequency networking mode is adopted, 2.4 G frequency bands of all the trackside APs use the same channel, and 5G frequency bands of all the trackside APs use the same channel. According to the system for reducing the self-interference between the APs in the rail transit vehicle depot, AP position marks are additionally arranged in Beacon frames and Probe Response frames of the rail-side APs and the vehicle depot APs, and scanning frequency point lists and dynamic switching logics corresponding to different areas are preset in a vehicle-mounted MR, so that the vehicle-mounted MR can intelligently sense the network area where a train is located, and the self-interference between the APs in the rail transit vehicle depot is reduced. The problems of scanning strategy and environment adaptation and access performance and interference in a vehicle depot are solved.

The invention discloses a twelve-beam six-dimensional force sensor, and relates to the technical field of force sensing. The sensor effectively solves the problem of coupling interference in six-dimensional force measurement by optimizing the structural design of the elastic body, innovating the bridging mode of the strain gauges and accurately positioning the patches, and improves the measurement precision and stability. The sensor is of a twelve-beam elastomer structure, stress distribution under different loads is analyzed through COMSOL finite element simulation software, and the position of a strain sensitive area is determined; a group bridge circuit is designed through tension and compression strain characteristics of the symmetrical strain beams, and decoupling is achieved from the hardware level; mEMS silicon strain gauges are selected and accurately assembled, so that the measurement error is further reduced. Experimental data show that the crosstalk rate of the sensor under loads of all dimensions is as low as 2%, net output signals are stable, and the sensor can be widely applied to the fields of robots, precision manufacturing, aerospace and the like with high requirements on force measurement precision.

The invention belongs to the field of inertia and integrated navigation, and particularly relates to an inertial integrated navigation quantity measurement selection and anti-interference method based on time synchronization. The method comprises the following steps: firstly, realizing time synchronization of satellite navigation and inertial data acquisition moments by adopting second pulse information of satellite navigation, and realizing high-frequency satellite navigation and inertial navigation speed measurement and positioning information storage by taking satellite navigation output frequency as a criterion after satellite navigation and inertial calculation is completed; furthermore, the availability of data is detected by utilizing methods such as satellite navigation data confidence evaluation based on inertial constraint and navigation measurement selection threshold limitation considering space lever arm error isolation, so that the accuracy of measurement selection is improved, and measurement errors introduced under weak signals, interference signals and complex dynamic situations can be effectively solved; and a thought and a solution are provided for an anti-interference problem of a combined navigation algorithm.

The invention discloses an anti-interference control method for cooperative work of multiple mechanical arms, electronic equipment and a medium, and the method comprises the steps: building a virtual three-dimensional space based on a physical space of a machine tool, and determining the position information and model parameters of each mechanical arm in the virtual three-dimensional space; a preset initial time sequence plan of each mechanical arm is obtained; according to each initial time sequence plan, analog simulation is carried out in a virtual three-dimensional space, and a working path of each mechanical arm is generated; when the positions of the working paths of the mechanical arms and the working paths of other mechanical arms at the same time point coincide or the distance between the working paths of the mechanical arms and the working paths of other mechanical arms is smaller than a preset safety threshold value, it is determined that interference risks exist in the corresponding mechanical arms; and according to the priority of the mechanical arm and a preset adjustment rule, the initial time sequence plan of the mechanical arm with the interference risk is adjusted, and a target time sequence plan of the mechanical arm without the interference risk is determined. The problem of interference between the mechanical arms can be avoided, and the operation safety of the machine tool is improved.

The invention discloses an SAR image domain LFM interference frequency modulation rate estimation and interference removal method, and belongs to the technical field of SAR image processing. According to the method, aiming at the problem that a satellite-borne SAR image is interfered by ground and ship-borne radars and the like, a frequency modulation rate fast estimator is provided based on least square estimation to obtain an interfered frequency modulation rate parameter; and removing the LFM interference focused as the narrow point response in the two-dimensional frequency domain through operations such as slope removal, Fourier transform, spectrum support generation, filtering, inverse transformation and phase compensation by using a spectrum focusing algorithm. According to the method, the LFM interference in the SAR single-view complex (SLC) image can be effectively removed, interference artifacts are remarkably filtered out, the image quality is improved, the method is robust to the interference power level, and the original image information is hardly lost.

The invention discloses a humanoid robot-oriented interconnection communication system and method based on machine learning, and relates to the field of robot communication. Through collaborative integration of visible light and infrared light communication facilities, the high bandwidth characteristic of visible light communication is reserved, the interference problem in a complex environment is solved by using infrared light, and the communication efficiency is improved. Complementarity communication guarantee is formed; by means of the dual-band design, the anti-electromagnetic interference capacity in an industrial scene is remarkably improved, and time delay can be controlled at the microsecond level; based on correlation analysis of filter parameters of historical task data and damping of a damping bracket, an external cause-success rate mapping model is constructed, so that a robot can dynamically adjust mechanical and communication parameters according to real-time working conditions; traditional fixed threshold value control is upgraded into self-adaptive adjustment, and the method is suitable for a high-precision control scene; through combined adjustment of filter parameters and damping of the damping support, limitation of single module optimization is broken through.

The present invention discloses an anti-interference target acquisition method based on machine vision technology measurement, the steps of which include: S1, original image multi-stage filtering preprocessing; S2, target feature extraction; S3, random forest construction: calling a historical data sample library to obtain an anti-interference target acquisition library, randomly selecting M data points from it, creating a decision tree for the selected data points, each decision tree will produce a result, comprehensively analyze the results and output a majority vote or average; S4, through random forest, obtain a target feature reference set; S5, select the first N frames of the on-site detection picture as a training set, obtain appropriate counting weights through continuous training, and then start from the N+1th frame image, perform voting analysis by determining the weight and using the Adaboost algorithm to determine the final target. The present invention can effectively solve the interference problem in the target capture process under complex scenes, and can effectively improve the accuracy and robustness of target detection.

Methods, devices, and systems for addressing interference issues in a wireless network using a multi-link device are provided. In one method, receiving, by a first access point (AP), a first frame sent by a station (STA) to a second AP, the first frame including a request for the second AP; and transmitting, by the first AP, a second frame to the second AP based on the first AP not receiving an acknowledgement frame destined for the STA from the second AP in response to the first frame. The request may be an AP assist request (AAR), and the request may be used for a second link. Further, the second frame may be arranged to notify the second AP of the request included in the first frame.

The invention discloses a conformal positioning antenna with a vehicle-mounted anti-interference shell. The conformal positioning antenna comprises an antenna body and a feed circuit, wherein the antenna body comprises a PCB (Printed Circuit Board), an even number of L-shaped antenna metal arrays, a metal piece with an opening and an antenna housing, the L-shaped antenna metal arrays and the feed circuit are arranged on the PCB, the metal piece with the opening is arranged above the L-shaped antenna metal arrays, and the antenna housing is arranged above the metal piece with the opening; the L-shaped antenna metal arrays are arranged in one-to-one correspondence with the holes above, and one L-shaped antenna metal array and the hole above the L-shaped antenna metal array form a circularly polarized antenna. The diameter of the antenna can be within 100 mm, the height of the antenna can be within 30 mm, and the antenna can be installed below an automobile glass skylight or inside a rear spoiler. And batch installation of vehicles is realized. The L-shaped metal arrays and the circular holes are irrelevant to 1 / 4 of the antenna, so that the same-frequency interference signals cannot interfere with the normal work of the antenna. The problems of complex EMC environment and positioning antenna interference of the current automobile are solved, and the maximum passive gain is more than 7dBi.

The application provides a method and device for applying target satellite timing and a readable storage medium, and relates to the technical field of communication. The method comprises the following steps: sending first indication information to a base station, wherein the first indication information is used for indicating that a UE acquires synchronization of a target satellite. The method solves the interference problem that may occur in a soft satellite switch scenario, thereby reducing the scheduling complexity of the base station.

The application discloses a kind of machine room equipment anti-electromagnetic interference method and system, the method is formed by deploying multiple electromagnetic sensor nodes in machine room inside three-dimensional monitoring network, real-time collection electromagnetic interference data and carry out time synchronization;When detecting electromagnetic interference event, according to the arrival time difference of the same interference signal detected by multiple sensor nodes, the three-dimensional space position coordinates of interference source are calculated by time difference positioning algorithm;The spatial distance between the interference source position and each equipment in the machine room is calculated, and the equipment with the smallest distance is initially determined as the interference source equipment;The preliminary determination result is comprehensively evaluated by distance confidence, positioning confidence and signal confidence, and when the confidence meets the preset condition, the interference source equipment is confirmed and labeled and warned;The application can monitor the electromagnetic environment of machine room in real time, quickly and accurately locate the electromagnetic interference source, and significantly improve the discovery efficiency and disposal speed of interference problem.

The invention relates to the technical field of satellite communication, and provides a feed link planning method, device and equipment for a target constellation system, and the method comprises the steps: obtaining link parameters of a plurality of feed links, the link parameters comprising a resource allocation parameter, a link establishment duration parameter and a communication quality parameter; determining a link score of the feed link according to the link parameter; based on the link score, an interference avoidance strategy of the feed link is formulated, and the interference avoidance strategy comprises at least one of adjustment of satellite transmitting power, closing of the feed link and switching of the feed link; determining an interference avoidance instruction according to the interference avoidance strategy; and sending the interference avoidance instruction to the target satellite through the target feed power station, so that the target satellite executes an interference avoidance action. According to the technical scheme provided by one or more embodiments of the invention, the interference avoidance strategy can be formulated as a whole, and the problem of interference between the target constellation system and other constellation systems is solved.

The invention relates to optimized handling of adjacent plane interference problems, and provides a data storage device and a method. The memory blocks of the meta-block are analyzed and tested to determine whether the plurality of memory blocks have not passed the first failure assessment. If more than one memory block does not pass the first failure assessment, the memory blocks are allocated to a retry pool. When in the retry pool, a second fault assessment is performed on the memory block. If one or more of the memory blocks pass the second failure assessment, the memory blocks are placed in a pool of memory blocks and relinked to other memory blocks to form a new meta-block. However, if one or more of the memory blocks do not pass the second failure assessment, the memory blocks are withdrawn.

The invention discloses a signal sending method and device. According to the method, information of a preset single-time sending duration and information of a preset sending time interval are obtained in response to a signal sending request, and the single-time sending duration and the sending time interval are both in positive correlation with a first distance between a sending device and a target object; according to the information of the single sending duration and the information of the sending time interval, determining the information of a single sending time period and the information of a sequence number corresponding to each single sending time period; in a preset corresponding relation between a sequence number and a sub-waveform signal, obtaining a target sub-waveform signal corresponding to the target sequence number, the target sequence number being a sequence number corresponding to the target single sending time period; and sending the target sub-waveform signal in the target single sending time period. According to the embodiment of the invention, the method can solve a self-interference problem when a wide pulse radar signal is used for measurement in a small darkroom environment, and guarantees the accuracy of a measurement result.

This application relates to a method, terminal device, and network device for backscatter communication, wherein the method includes: the terminal device determining one or more backscatter time-domain resources associated with a received first signal; the terminal device performing backscatter communication based on the one or more backscatter time-domain resources. This application can reduce backscatter communication collisions and interference problems.

The application relates to a resource allocation method for a full-duplex-non-orthogonal multiple access (NOMA) based symbiotic radio system under an alpha-fairness principle, and belongs to the field of Internet of Things. The method comprises the following steps: establishing a full-duplex-NOMA based symbiotic radio system, wherein full-duplex mode is adopted at both the transmitting end and the receiving end, and the residual self-interference problem caused by full-duplex is considered; combining non-linear energy collection and non-perfect channel state information conditions, and constructing a resource allocation model for maximizing the backscatter device (BD) throughput under the alpha-fairness framework; adopting a block coordinate descent method to convert the resource allocation model for maximizing the throughput into a convex optimization problem; solving the optimization problem by using a convex optimization toolbox to obtain the time slots between NOMA clusters, the reflection coefficient of the BD and the transmitting power of full-duplex, that is, to obtain a resource allocation scheme. In the application, the BD achievable throughput is obviously improved in terms of fairness, and even under the condition of strong residual self-interference, the throughput performance is still excellent.

The present application provides a turnout structure and a turnout diversion method for a suspended monorail system, which adopt a specific combination of a fixed rail and a swing rail to solve the interference problem between the movable rail and the motor car or vehicle that may occur when a conventional railway turnout in the prior art is applied to a suspended monorail using a steel wheel-steel rail system.

The present invention provides a quantitative calculation method for the interlayer interference coefficient of the productivity of a single well in the commingled production of multi-layer oil reservoirs, which belongs to the technical field of oil and gas field exploration and development, and includes the following steps: based on well logging parameters, determining the number of oil layers developed in the single well of the research object and the thickness and permeability of each oil layer; sorting the multi-layer oil reservoirs according to the permeability; decomposing the interference problem of the commingled production of multi-layer oil reservoirs into multiple interference problems between two-layer oil reservoirs; establishing a relationship between the interlayer interference coefficient of the commingled production of two-layer oil reservoirs and the permeability difference; calculating the interference coefficient between the two-layer oil reservoirs; calculating the total interference coefficient of each layer; and calculating the interlayer interference coefficient of the productivity of a single well in the commingled production of multi-layer oil reservoirs of the research object. The present invention converts the interlayer interference problem of the productivity of a single well in the commingled production of multi-layer oil reservoirs into the interlayer interference problem of the productivity of a single well in the commingled production of multiple two-layer oil reservoirs, and realizes the quantitative calculation of the interlayer interference coefficient of the productivity of a single well in the commingled production of multi-layer oil reservoirs under any number of layers and any thickness, and the calculation result is more real and reliable.

The application discloses a kind of all-time electronic interference system transceiving methods, comprising the following steps: S1.jammer generates the interference signal with period N , is transmitted after digital-analog conversion and up-conversion operation;S2.scout receiver enters training mode, after the self-interference, reference signal is passed through down-conversion, analog-digital conversion operation, buffer 2 N Length, select the data transformation to frequency domain in N Self-interference channel estimation;S3.scout receiver enters reconnaissance mode, after receiving, reference signal is passed through down-conversion, analog-digital conversion operation, buffer 2 N Length, select the data transformation to frequency domain in N Self-interference signal is reconstructed and cancelled using reference signal and channel estimation value, and then inverse transformed back to time domain, to obtain target signal.The application adopts the mode of combination of training mode and reconnaissance mode, solves the self-interference problem of interference reconnaissance integrated system.

The invention provides a general parameter construction method and system for multi-label parallel communication, and belongs to the technical field of passive Internet of Things and backscatter communication. According to the invention, the interference problem of multi-label parallel reflection communication in the sensor network is effectively solved. As the problem is essentially NP-hard, the traditional search traversal method is difficult to complete in polynomial time. According to the invention, through a staged processing mechanism, a reliable interference-free parameter configuration result can be given within an acceptable time. The method has good universality and expansibility, and an efficient and reliable solution is provided for multi-label parallel communication in the sensor network.

The present invention discloses a method for estimating and removing the LFM interference frequency modulation rate in the SAR image domain, and belongs to the technical field of SAR image processing. This method addresses the problem of interference to spaceborne SAR images caused by ground-based and shipborne radars. First, a frequency modulation rate fast estimator is proposed based on least squares estimation to obtain the frequency modulation rate parameters of the interference. A spectrum focusing algorithm is then used to remove the LFM interference focused on a narrow point response in the two-dimensional frequency domain through operations such as de-slope, Fourier transform, spectrum support generation, filtering, inverse transform, and phase compensation. The present invention can effectively remove LFM interference in SAR single-look complex (SLC) images, significantly filter out interference artifacts, improve image quality, and is robust to interference power levels with almost no loss of original image information.

The embodiments of the present application relate to the technical field of electronic devices. Provided are an anti-interference structure, a housing assembly and an electronic device. The anti-interference structure comprises an antenna, a camera module and a conductive member, wherein the conductive member is located in a space between the antenna and the camera module, electromagnetic waves radiated by the antenna can excite a first standing wave propagating in a first direction on the conductive member, the first standing wave comprises a first electric field, and the first electric field can enable the conductive member to generate a first current conducted in the first direction towards one side of the first standing wave; and the anti-interference structure comprises a first conduction loss member, wherein the first conduction loss member is located on the side of the conductive member that faces the first standing wave, and the material of the first conduction loss member is a current loss material, or, the material of the part of the conductive member that faces one side of the first standing wave is a current loss material. The anti-interference structure, housing assembly and electronic device provided in the embodiments of the present application effectively solve the interference problem generated by a first standing wave on a camera module.

The embodiment of the invention provides a communication method, device and system. The method comprises: a third signaling comprises a third parameter and / or a fourth parameter, the third parameter is used for indicating at least one of the following: frequency domain resources of N sets of SBFD GBs or frequency domain resources of N sets of SBFD uplink sub-bands, and the fourth parameter is used for indicating at least one of the following: frequency domain resources of N sets of SBFD uplink sub-bands or frequency domain resources of N sets of SBFD downlink sub-bands. In the embodiment of the invention, according to the indicated SBFD uplink and downlink sub-bands and the frequency domain resource configuration of the GB, the resource utilization problem and the interference problem between the SBFD terminal and the network equipment can be solved.

The utility model discloses an antenna interference prevention display module and an electronic device, the display module comprises a module FPC, a binding end is formed on the module FPC, a binding wire is formed on the upper layer of the binding end, a ground wire part is formed on the module FPC at a position close to the binding end, a gap is formed in the middle of the ground wire part, and the upper layer of the binding wire is connected with the binding end. And the ground wire parts at the two ends of the gap are electrically connected with the corresponding binding wires through via holes respectively. The display module has the beneficial effects that the ground wire part is divided into two parts by arranging the notch on the ground wire part, so that the annular ground wire can be effectively prevented from forming antenna radiation interference energy, the EMI interference problem of the display module can be prevented, and the quality of the display module and the quality of the electronic equipment are improved.

The present application belongs to the field of inertial and integrated navigation, and particularly relates to a time synchronization-based inertial and satellite integrated navigation measurement selection and anti-interference method. The present application first uses satellite navigation second pulse information to realize time synchronization of satellite navigation and inertial data collection time, and realizes high-frequency satellite navigation and inertial navigation velocity and positioning information storage based on satellite navigation output frequency after ensuring satellite navigation and inertial calculation completion. Further, the present application uses satellite navigation data confidence evaluation based on inertial constraint and navigation measurement selection threshold limit considering space boom error isolation to detect data availability, improve measurement selection accuracy, effectively solve measurement error introduced in weak signal, interference signal and complex dynamic situation, and provide a train of thought and solution for the anti-interference problem of integrated navigation algorithm.

The invention relates to the technical field of deep learning, and discloses a Beidou time service signal anti-interference method based on deep learning. The method comprises the following steps: carrying out variational mode decomposition on a baseband signal to obtain a plurality of intrinsic mode function components; extracting and fusing features through a spatial-temporal feature coding network perceived by physical information, and generating pure signal representation; and recovering an ideal baseband signal by using a signal reconstruction decoder. According to the invention, by introducing variational mode decomposition, a complex anti-interference problem is decomposed to a plurality of simpler signal components for processing, so that the pertinence and efficiency of subsequent neural network processing are improved; and a lightweight network structure constructed by adopting depth separable convolution and an attention mechanism is adopted, so that the calculation complexity and parameter quantity of the model are reduced.

The application provides an active control method of an electro-hydraulic servo system based on finite time control. The method dynamically restricts the error boundary through a time-varying obstacle Lyapunov function, combines a backstepping recursive control framework with a fractional order convergence term, significantly improves the convergence speed and anti-interference ability of the system, effectively suppresses the overshoot problem and chattering phenomenon of PID control, designs a feedforward compensation and an adaptive disturbance observation mechanism in view of the nonlinear characteristics and anti-interference problems of the electro-hydraulic servo system, and still can quickly recover stability under strong external disturbance, thereby ensuring the accuracy and robustness of the control force output, and based on the similarity criterion, a scale experiment platform is constructed to verify the engineering universality of the control strategy, and an efficient, reliable and easy-to-deploy solution is provided for the anti-seismic control of complex structures.

The invention provides a multi-channel routing anti-interference decision-making method for a limited buffer area, and the method comprises the steps: 1, analyzing the interference of a jammer, the mutual interference between nodes, the influence of channel noise and path loss on a signal-to-interference ratio in an interference scene of a multi-hop wireless network, and calculating the transmission rate between adjacent nodes; 2, calculating the data volume of a node buffer area according to the data packet arrival rate, the interference conflict, the mutual interference conflict, the buffer area overflow packet loss and the maximum transmission frequency packet loss; 3, modeling an anti-interference routing and channel joint optimization problem of the distributed multi-hop network as a partial observable random game; the nodes realize long-term efficiency maximization based on local observation information; step 4, setting a layered DQN architecture; a routing anti-interference problem in a multi-channel scene is split into upper-layer routing planning and lower-layer channel selection. According to the method, the successful transmission rate of the data packet is improved, and the convergence speed of the algorithm is accelerated.