71 results about "Interference problem" patented technology

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.

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 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 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 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 discloses a cross time slot interference avoidance method, apparatus and device, a medium and a product. An interference applying base station sends an interference reference signal to an interfered base station according to an interference time domain position indicated by a core network device; obtaining an interference index determined by the interference reference signal detected by the interfered base station; and performing interference avoidance adjustment at the interference time domain position according to the interference index. According to the scheme of the invention, accurate interference avoidance can be carried out on the interference applying base station according to the identified interference index, adaptive interference avoidance can be realized, and the resource utilization rate is improved while the interference problem is solved.

The application provides a point track level cooperative anti-interference method based on multi-source information space-time consistency judgment, which is applied to a multi-source information fusion system, and implementation steps include: receiving n radar point track data, and unifying point track coordinates; judging a common view area for each point track; judging a time window for the point track; judging the point tracks of multiple different radars as being homologous; sending the point track after point track arrangement to a composite tracking module, and forming a target tracking track through multi-radar data correlation filtering; judging whether the current point track is a target source of an existing track, if the current point track is a target track target, point track arrangement is performed, otherwise, the current point track is regarded as an interference point and is removed. Through the method, the cooperative anti-interference problem in a multi-radar information source fusion system is solved without sacrificing radar detection performance, a more stable anti-interference effect is provided, and the starting of radar target tracking is more stable and reliable.

The present disclosure relates to the technical field of wireless communication, and particularly provides an interference optimization method and device, electronic equipment and computer program product. The method comprises: determining an optimization target, wherein the optimization target comprises: a disturbing base station and / or a first to-be-optimized area; performing interference optimization on the optimization target based on a preset interference optimization strategy, to obtain optimized interference data and / or a second to-be-optimized area; and in a case where the optimized interference data is less than a first threshold, determining whether to perform parameter rollback or continue interference optimization based on the second to-be-optimized area and a second threshold. The present disclosure verifies whether the interference source is eliminated, effectively avoids the case that interference occurs again after parameter rollback and interference optimization needs to be frequently and repeatedly performed. Meanwhile, through minimum granularity monitoring, parameter rollback can be performed at the first time when the interference source is eliminated, network loss is recovered, and the requirement of high timeliness for the interference problem is met.

The invention provides an interference detection method and device and a vehicle, and the method comprises the steps: obtaining first data collected by a first sensor in response to the obtained first information, the first sensor comprises a distance sensor and / or an image sensor, and the first information is used for indicating the adjustment of a front-row seat and / or the lowering of a rear-row display device; according to the first data, a first position relation and / or a second position relation are / is determined, the first position relation is the position relation between a first obstacle in the lowering area of the rear row display device and the rear row display device, and the second position relation is the position relation between a second obstacle in the moving area of the front row seat and the front row seat; according to the first position relation and / or the second position relation, the state of the front-row seat or the rear-row display device is adjusted. According to the technical scheme, the interference problem of the front-row seat and the rear-row display device can be effectively avoided, and the user experience is improved.

The invention provides a piezoelectric ultrasonic transverse wave transducer capable of resisting structure scattering interference, which comprises a shell, an inclined wedge block, a piezoelectric wafer attached to the inclined wedge block and a backing layer filled in the shell, and the material of the backing layer is in a uniform distribution state along the front edge direction and the upper edge direction; the inclined wedge block is provided with a front wedge surface, an inclined wedge front angle and an inclined wedge rear angle, the front wedge surface is arranged to be of a zigzag structure, the angle range of the inclined wedge rear angle comprises any interval of [29 degrees, 34 degrees] or [38 degrees, 41 degrees], and the angle range of the inclined wedge front angle comprises any interval of [60 degrees, 80 degrees] or [100 degrees, 115 degrees]. According to the piezoelectric ultrasonic transverse wave transducer capable of resisting structure scattering interference, through collaborative design of key structure parameters of the inclined wedge block and the structure of the backing layer, the sound wave propagation state in the transducer is effectively optimized, the structure scattering interference problem of the piezoelectric ultrasonic transverse wave transducer can be solved, and the piezoelectric ultrasonic transverse wave transducer has the advantages that the structure scattering interference is reduced; and the anti-interference capability and the detection performance are improved.

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 utility model discloses a kind of detection wheel lubrication pipeline anti-interference structure, including the lubrication pipeline being respectively arranged on the end cover of wheel two sides, lubrication pipeline is integrally processed in end cover, its one end is communicated with the lubrication passage of bearing, the other end is equipped with lubricating grease nozzle;In the end cover close to encoder, lubrication pipeline is located in the lower area of end cover, and extend along the radial direction of end cover;In the end cover away from encoder, lubrication pipeline is located in the lateral area of end cover, and extend along the axial direction of end cover;The outside of lubricating grease nozzle is equipped with dustproof assembly;By arranging lubrication pipeline close to encoder in the lower area of end cover and extending along radial direction, lubrication pipeline away from encoder is arranged in the lateral area of end cover and extends along axial direction, make lubrication pipeline and encoder completely stagger in space, fundamentally solve the interference problem of traditional design, guarantee the structural integrity of encoder and lubrication pipeline.

The utility model relates to the technical field of debugging circuits, in particular to a radio frequency spurious debugging circuit, which comprises a main circuit and a checking circuit with the same structure as the main circuit, specifically, the checking circuit comprises a filter, filtering modules are symmetrically arranged on two sides of the filter, an inductor L9 and an inductor L10 are arranged between the two checking circuits, and the inductor L9 and the inductor L10 are connected with the main circuit. When an interference problem occurs, the main circuit takes an inductor L9 or an inductor L10 as a path modification node and is combined with the troubleshooting circuit to form a debugging circuit with the same structure as the main circuit. According to the utility model, through the design of the main circuit and the troubleshooting circuit and the change of a hardware channel, an interference source and an interference path of the frequency band are troubleshot, the stray problem caused by the channel can be rapidly troubleshot, and meanwhile, a compatible position can be disconnected, so that the cost and the performance are optimal, and the efficiency and the accuracy of circuit harmonic interference troubleshooting are improved.

The invention relates to a duplex transmission method and device, equipment and a medium. The duplex transmission method is executed by a first terminal, and comprises the following steps: sending capability indication information to a network device, the capability indication information being used for indicating whether the first terminal has a first capability on at least one frequency band; in the case of having a first capability, duplex transmission is performed in which information is received by the other one when the information is transmitted by one of the first connection and the second connection: the first capability is a capability of receiving information by the other one when the information is transmitted by one of the first connection and the second connection, and the second capability is a capability of receiving information by the other one when the information is transmitted by one of the first connection and the second connection; the first connection is the connection between the first terminal and the network equipment, and the second connection is the connection between the first terminal and the second terminal. According to the method, the interference problem of the first terminal during duplex transmission can be reduced.

The application is suitable for the technical field of pipeline welding, and provides an automatic welding equipment for heating pipe joints, which comprises a chassis, a supporting unit and an executing unit. The chassis is symmetrically provided with cantilever cranes at both ends of the top thereof; the supporting unit is installed on the chassis and is provided with a lifting mechanism and a driving mechanism; a steam heating pipe is rotatably supported on the driving mechanism; and the executing unit is provided with a displacement mechanism and a double-sided limiting mechanism. The displacement mechanism drives the double-sided limiting mechanism to displace between a welding station and an initial station. When at the initial station, the double-sided limiting mechanism leaves an interference-free channel for hoisting the steam heating pipe; when at the welding station, the double-sided limiting mechanism abuts against and limits the flanges from both sides, and positions the welding joint at the welding gap. The application realizes simultaneous welding of the flanges at both ends of the steel pipe, solves the hoisting interference problem, and real-time restricts the butt joint gap during the whole welding process, thereby improving the welding quality and efficiency.

The invention relates to the technical field of high-voltage direct-current transmission equipment anti-interference, and discloses a high-voltage direct-current converter valve cooling system sensor anti-interference method based on magnetic shielding, which comprises the following steps: designing and preparing a double-layer composite shielding structure, attenuating a constant magnetic field by using a high-permeability inner layer, and inhibiting an alternating magnetic field by using a high-conductivity outer layer; cooperatively assembling the sensor main body and the shielding structure, and performing insulation pretreatment, grounding and sealing treatment; a three-axis Hall sensor is deployed in a shielding layer to detect a residual magnetic field in real time, and an original measurement value of the sensor is corrected in real time through a customized compensation model (linear, nonlinear or segmented model) built in an interference compensation unit. According to the invention, through a cooperation mechanism of physical shielding and intelligent compensation, the problem of interference of a constant and alternating composite magnetic field on a cooling system sensor is effectively solved, and the measurement precision, stability and system reliability of the sensor in a strong magnetic field environment are improved.

The application relates to the front protection field, in particular to an assembling method of an assembled front protection assembly, which comprises the following steps: checking to-be-assembled parts, pre-assembling the parts, assembling an upper protection body and a front grille, and installing a lower protection body; the application can avoid interference problems during assembling of the assembled front protection assembly through limitation of specific procedures, and can realize pre-integrated assembling of multiple parts through multiple stations, so that the assembling efficiency of the front protection assembly is improved.

The application belongs to the technical field of integrated circuits, and discloses an automatic time offset compensation method for an ultra-wideband chip baseband, which divides Symbol signals entering an SHR into I-path real part signals and Q-path imaginary part signals, adopts an interpolation algorithm, and outputs compensation phase adjustment interpolation positions through a time offset compensation module; the number of Preamble synchronizations is judged, the amplitude of signals is estimated and low-pass filtered, and time offset compensation with different precisions is selected; phase compensation is dynamically adjusted; after detecting an SFD frame synchronization signal, the time offset phase difference of the current Symbol is locked, tracking compensation is performed, and the compensated signals are sent into a decoding module for decoding. The application can flexibly select time offset compensation modes with different precisions according to current channel conditions, and overcome interference problems caused by noise; through dynamic adjustment of compensation precision, communication reliability is significantly improved while power consumption is reduced, so that the overall performance of the system is comprehensively improved.

The invention discloses a multi-channel conflict coordination system and a working method thereof. The system comprises a control unit, an ETC2.0 communication unit, an ETC1.0 communication unit and a plurality of isolation units, the control unit is respectively connected with the ETC2.0 communication unit and the ETC1.0 communication unit; the ETC2.0 communication unit is connected with the isolation unit; and the ETC1.0 communication unit is connected with the isolation unit. By implementing the system provided by the invention, the interference problem in multi-channel communication can be effectively solved, the compatibility of the ETC2.0 system and the existing ETC1.0 equipment is ensured, and the stability and efficiency of the whole system are also improved.

According to the three-wavelength and four-angle polarization sensitive holographic imaging system provided by the invention, the imaging system has wavelength and polarization resolution capability by using a mode of increasing information channels and synchronously acquiring; distortion phase and scattering noise, caused by medium refractive index disturbance and smoke multiple scattering in a severe imaging environment, of a target light field are analyzed, and the complex and severe environment imaging problem similar to an energetic particle combustion field can be well solved. Furthermore, four-angle polarization is introduced to increase an independent channel, so that the anti-interference capability of holographic imaging is improved, and the information storage capacity of the system is improved by four times on the premise that the physical size does not need to be increased. The problem of extinction and speckle interference caused by high particle concentration number is solved by means of the thought of synchronous interpretation of multi-dimensional light field information, and polarization characteristic parameters capable of distinguishing particles from background areas are extracted from polarization channels by means of the advantage of more stable transmission of polarization characteristics of light so as to obtain three-dimensional position information of the particles.

The invention discloses a liquid crystal display module PCB anti-interference device, and relates to the technical field of liquid crystal display modules, the liquid crystal display module PCB anti-interference device comprises a PCB substrate, a display driving module, a backlight driving module and a power supply input interface are integrated on the PCB substrate, and a multi-stage power supply filtering module, a signal shielding and impedance matching module and a layout isolation module are arranged on the PCB substrate; the multi-stage power supply filtering module is connected among the power supply input interface, the display driving module and the backlight driving module, the signal shielding and impedance matching module is connected with the display driving module and an external FPC interface, and the layout isolation module is arranged between the display driving module and the backlight driving module. The multi-stage power supply filtering module comprises a common mode inductor, a first differential mode inductor, a second differential mode inductor, a ceramic capacitor bank and a tantalum capacitor bank. According to the invention, a cooperative anti-interference system is constructed from three dimensions of power supply filtering, signal transmission and layout isolation, and the problems of wide-band power supply noise, signal radiation interference and circuit coupling interference are solved.