112 results about "Interference elimination" patented technology

The invention provides an electromagnetic detection system based on a sea-bottom crawler, belonging to the field of geophysical exploration technology, comprising: a survey vessel, a sea-bottom crawler, a transmitting antenna, a receiving node array, a control chip, and a power supply; the survey vessel is connected to the sea-bottom crawler through a traction rope, and the tail of the sea-bottom crawler is provided with a drag cable, on which the transmitting antenna and the receiving node array are mounted, and both the control chip and the power supply are configured in the integrated electronic cabin of the sea-bottom crawler; the power supply provides electrical energy to the sea-bottom crawler, transmitting antenna, receiving node array, and control chip, and the control chip is electrically connected to the transmitting antenna, the receiving node array, and the power system of the sea-bottom crawler; the control chip is configured to have an electromagnetic detection interference compensation module for performing interference elimination and compensation on reflected waves received by the receiving node array. It solves the technical problem of insufficient detection accuracy in existing technologies.

The invention relates to a narrow-band interference filtering method and device based on an HPLC (High Performance Liquid Chromatography) chip, and belongs to the technical field of power line carrier communication. When pulse processing is carried out on a signal, AGC / DAGC processing is paused if a narrowband interference detection starting signal is detected, a narrowband interference detection module calculates a narrowband interference frequency point by using the signal of which the AGC / DAGC processing is paused, and a filter coefficient used by a narrowband interference elimination module is determined based on the narrowband interference frequency point; and the narrowband interference elimination module carries out narrowband interference elimination processing according to the determined filter coefficient. Wherein the AGC / DAGC processed signal is paused when the signal participating in the calculation of the narrowband interference frequency point is subjected to pulse processing, so that signal fluctuation caused by AGC / DAGC processing is avoided, the calculation accuracy of the narrowband interference frequency point is improved, and the narrowband interference filtering effect is ensured.

The invention discloses a small current grounding system single-phase grounding fault line selection method and system based on wavelet packet decomposition and comprehensive criteria, and belongs to the technical field of power system relay protection and fault diagnosis. Comprising the following steps: signal acquisition and preprocessing: acquiring bus zero-sequence voltage and each outgoing line zero-sequence current signal, and carrying out filtering and normalization preprocessing on the signals to eliminate interference; performing wavelet packet multi-scale decomposition, selecting a wavelet as a primary function, and performing wavelet packet decomposition on the preprocessed zero-sequence current signals of each line to obtain decomposition coefficients of different frequency bands; selecting characteristic frequency bands, calculating signal energy of each frequency band after each line is decomposed, and selecting the frequency band with the maximum signal energy; constructing a comprehensive criterion, wherein the comprehensive criterion comprises a polarity criterion and an amplitude criterion; and fault line discrimination: comparing the polarity criterion of each line with the bus voltage polarity, and finding out the line with opposite polarity and the most significant amplitude, namely the fault line. And the line selection accuracy and reliability under complex conditions are improved.

The invention discloses a transient voltage and current rapid protection method, system and device and a medium, and belongs to the technical field of power distribution network transient voltage and current protection, and the method comprises the steps: obtaining an analog signal through a sensing module, and carrying out the analog signal processing through a main control module; the main control module carries out filtering elimination on the digital signal after digital conversion by using an FPGA (Field Programmable Gate Array); and the main control module executes range adjustment, fault detection and protection control based on the filtered data, drives the parallel protection module to protect the element and records the system state. According to the transient voltage and current rapid protection method, the sensing module acquires signals, the master control module performs isolation conditioning and digital conversion, the FPGA performs parallel real-time filtering to eliminate interference, the self-adaptive range and multi-parameter fault accurate criterion is adopted, and an optical coupler isolation driving protection element is adopted. Microsecond-level high-speed response and high-reliability protection are achieved, fault expansion is effectively prevented, and equipment safety is guaranteed.

The present application relates to the technical field of neutron flux measurement, and particularly relates to a neutron flux measurement interference elimination system and method, which comprises: a detection unit for detecting neutron flux and sending an initial measurement signal; a reference signal generation unit for generating a reference signal; a transmission unit for transmitting the initial measurement signal, the initial measurement signal being interfered to form an interfered measurement signal during transmission; and a processing unit for receiving the interfered measurement signal and the reference signal, and obtaining the initial measurement signal according to the reference signal and the interfered measurement signal. The present application collects the interference signal during transmission of the measurement signal as the reference signal or generates the reference signal by simulating the known interference signal, and then eliminates the interfered measurement signal based on the offset algorithm, so as to restore the real and accurate neutron flux measurement signal.

The application relates to a backflow cable anti-theft method and system based on power carrier noise suppression, and belongs to the technical field of power system security and protection. Through sliding window preprocessing and empirical mode decomposition of carrier communication signals collected by multiple monitoring nodes, various noise components in the signals are effectively separated. Then, a combination of classification weighting and LSTM network prediction is adopted to realize intelligent noise suppression and future trend prediction. Through the synergistic effect of a dynamic threshold mechanism and an unscented Kalman filtering algorithm, the system can adaptively adjust the noise suppression strength, maximize the elimination of interference components while ensuring signal integrity. Finally, based on the double criteria of short-time energy and zero-crossing rate characteristics, combined with a multi-node time delay difference positioning algorithm, accurate identification and precise positioning of the theft event are realized.

The utility model discloses a rapid satellite alignment device based on a Beidou compass, which comprises a main control module, a double-receiving mechanism, a signal fusion processing module, an angle adjusting mechanism and a mounting bracket, and is characterized in that the angle adjusting mechanism and the main control module are mounted on the mounting bracket; the double-receiving mechanism and the signal fusion processing module are installed on the angle adjusting mechanism, and the master control module is provided with a signal processing unit and a control unit. According to the method, errors possibly caused by a single signal can be reduced by providing redundant data, so that the accuracy of beam pointing is improved, interference can be effectively eliminated by double receiving of the same satellite signal, the anti-interference capability of a system in a complex environment is enhanced, and data stability is ensured.

The present application provides a communication method and a related apparatus. The method comprises: a terminal device finds, from first configuration information, a sampling sequence and a comb offset corresponding to a first antenna port. Then, on the basis of the sampling sequence corresponding to the first antenna port and the comb offset corresponding to the first antenna port, the terminal device determines frequency domain positions of N frequency units corresponding to the first antenna port, and sends a first reference signal sequence by means of the frequency domain positions of the N frequency units corresponding to the first antenna port, N being an integer greater than or equal to 2. The N frequency units corresponding to the first antenna port are arranged at non-uniform intervals, which helps reduce interference and improve channel estimation performance. For example, when a communication system needs to support a large number of antenna ports and / or channel delay is large, if the N frequency units corresponding to the first antenna port are arranged at non-uniform intervals, interference can be eliminated by means of methods such as filtering, thereby improving channel estimation performance.

This invention discloses a spline-adaptive method for eliminating power frequency interference in surface electromyography (EMG) signals, within the field of EMG signal noise reduction technology. The method includes the following steps: frequency domain input vector generation and frequency domain spline adaptive filtering; power frequency interference elimination; construction of a semi-quadratic criterion cost function and filter coefficient update; iterative update, repeating the above steps until noise reduction is complete. This spline-adaptive method for eliminating power frequency interference in EMG signals employs a robust frequency domain implementation method to construct the spline adaptive noise reduction system, exhibiting good stability, high computational efficiency, and the ability to efficiently eliminate power frequency interference.

This invention relates to the field of electric passenger vehicle ride comfort testing technology, specifically to a device and method for synchronously acquiring and eliminating motion sickness parameters in electric passenger vehicles. It includes: a full-area flexible pressure sensor array to acquire human contact pressure signals; a multi-modal motion vibration monitoring module to simultaneously acquire vehicle body and human motion and vibration signals; a data acquisition unit to receive and process raw sensor data; an intelligent calculation unit to calculate mechanical, kinematic, and vibration parameters; an adaptive calibration unit to calibrate sensor baselines and dynamically adjust sensitivity and calculation coefficients; a dual-linkage verification unit to verify data validity; an autonomous motion interference elimination unit to separate the vehicle-related motion and human autonomous motion components, eliminating interference data; and a data output unit to output valid raw data and calculated parameters to an external system. This technical solution can achieve accurate acquisition of multi-dimensional motion sickness parameters in electric passenger vehicles and intelligent elimination of interference data.

The present application relates to the technical field of textile equipment state monitoring. The purpose is to provide an abnormal vibration mode identification and state monitoring method for the spindle of a covering yarn machine. Through full-section multi-section sensing layout, mechanical vibration reduction and anti-interference design, four-stage dynamic precision compensation algorithm and working condition coupling abnormal identification model, the present application realizes accurate collection of spindle vibration signals, interference elimination, fault identification and positioning, and solves the core problems of incomplete coverage, weak anti-interference, low precision, fuzzy positioning and untimely early warning in the prior art.

Embodiments of the present disclosure relate to a user equipment apparatus, method, and computer program for self-interference cancellation The UE apparatus comprises a first transmit chain (210) comprising a power amplifier, PA, (211) and a coupler (213) connected serially, a second transmit chain (220) comprising a PA (221) and a coupler (223) connected serially, and an interference cancellation circuit (230) configured to feed an output signal of an aggressor transmit chain back to an input terminal of a PA in a victim transmit chain to cancel interference of the aggressor transmit chain with the victim transmit chain, wherein the aggressor transmit chain is one of the first transmit chain (210) and the second transmit chain (220) causing the interference, and the victim transmit chain is another one of the first transmit chain (210) and the second transmit chain (220) subject to the interference.

The application discloses an OFDM transmission method and system of a marine channel. The method can include: a transmitting end transmits a signal, converts the signal into a time domain through an IFFT, eliminates interference, converts the signal back into a frequency domain through an FFT, and obtains a frequency domain signal; divides the frequency domain signal into useful data and pilot data, and performs channel estimation on the pilot data; performs equalization, parallel-serial conversion and demodulation on the channel estimated signal and the useful data, and a receiving end obtains a final receiving signal. The application can effectively filter noise interference through an improved channel estimation method.

Seeker devices and methods of navigation are disclosed. Devices comprise a self-protecting direction finder that can determine direction to a source of RF interference, cancel the interference, and provide direction signals and desirably received signals to the flight controller, which guides navigation with respect to the jammer.

The invention relates to an interference elimination method and device and computer equipment. The method comprises the following steps: receiving an initial time domain signal on a time-frequency resource of a serving cell; wherein the initial time domain signal is a superposed signal of a first physical broadcast channel (PBCH) signal from a serving cell and a second PBCH signal from a same-frequency interference cell of the serving cell; pBCH decoding is carried out on the initial time domain signal to obtain first cell information; wherein the first cell information comprises a target synchronization signal of the first cell and PBCH block SSB center frequency point information; determining the first cell as a same-frequency interference cell according to the cell center frequency point information and the target SSB center frequency point information, and performing same-frequency interference elimination on the initial time domain signal according to the cell center frequency point information; wherein the cell center frequency point information comprises the actual SSB center frequency point information of the service cell and the actual SSB center frequency point information of the same-frequency interference cell. The method can effectively eliminate the same frequency interference and improve the communication quality.

Embodiments of the present application relate to the technical field of antennas, and in particular to an antenna assembly, a communication device, and a base station. The embodiments of the present application aim to solve the problem of an interference signal affecting the communication quality of an antenna assembly. A first parasitic radiator is spaced apart from a first radiator; the first parasitic radiator is used for receiving an interference signal; a first phase shifting unit is coupled to the first parasitic radiator; the first phase shifting unit is used for adjusting the phase of the interference signal to form a first signal, and the phase difference between the phase of the first signal and the phase of the interference signal is 180°; the first phase shifting unit is further used for transmitting the first signal to the first radiator. By means of the configuration, the first signal and the interference signal received by the first radiator interfere with each other to cancel each other, thereby reducing or even eliminating the influence of the interference signal on the first radiator, and improving the communication quality of the antenna assembly.

The embodiment of the invention relates to the technical field of antennas, in particular to an antenna assembly, communication equipment and a base station. The embodiment of the invention aims to solve the problem that the communication quality of the antenna assembly is influenced by interference signals. The first parasitic radiator and the first radiator are arranged at an interval, the first parasitic radiator is used for receiving an interference signal, the first phase shifting unit is coupled with the first parasitic radiator and used for adjusting the phase of the interference signal to form a first signal, and the phase difference between the phase of the first signal and the phase of the interference signal is 180 degrees; and the first phase shifting unit is also used for transmitting the first signal to the first radiator, so that the first signal and an interference signal received by the first radiator interfere with each other and are counteracted, the influence of the interference signal on the first radiator is reduced or even eliminated, and the communication quality of the antenna assembly is improved.

The application discloses a rolling bearing fault diagnosis method based on IMVO optimized MCKD denoising, solves the problems of the limitations of the parameter selection of the existing MCKD algorithm often depending on the artificial experience setting and the slow iteration speed of the MVO algorithm caused by the influence of TDR change, and the technical solution points are as follows: collecting vibration signals in the running process of a wind turbine rolling bearing, adaptively improving the TDR of the MVO algorithm, obtaining an improved multi-universe optimization algorithm IMVO, taking the Gini coefficient and the envelope spectrum peak factor as the fitness function for iterative training, optimizing the optimal FIR filter parameters (L, M) of the maximum correlation kurtosis deconvolution MCKD, and obtaining the filtered signal after MCKD denoising, analyzing the signal after MCKD deconvolution through the envelope spectrum, identifying the fault characteristic frequency components in the spectrum, and performing the fault diagnosis of the bearing state, so that the rolling bearing fault diagnosis method based on the IMVO optimized MCKD denoising can effectively eliminate interference, is fast and high in accuracy.

This invention relates to the field of MOS gas sensor array technology. To address the problem of varying MOS gas sensor array signals within a uniform scale range while eliminating the influence of interference factors, this invention provides a preprocessing method for MOS gas sensor array signals. The method includes: driving a target gas into a gas chamber to replace the air inside; and during the process of driving the target gas into the gas chamber, acquiring a first electrical signal output by the MOS gas sensor according to a preset acquisition frequency; filtering the first electrical signal to obtain a second electrical signal; and performing scale transformation processing on the second electrical signal to obtain a third electrical signal. The filtering process of this invention can eliminate abnormal fluctuations in the electrical signal, thereby improving the stability of the electrical signal acquired by the MOS gas sensor. The scale transformation processing enables the signal to vary within a uniform scale range while eliminating the influence of interference factors, thereby effectively improving the consistency and stability of the signal.

This invention provides a method, apparatus, base station, and communication system for interference cancellation in private network communication. Based on this interference cancellation method, after the target base station enters the working state, it receives uplink data sent by terminals in the same cell. During the demodulation of the uplink data, an interference cancellation matrix is ​​multiplied by the uplink data to obtain the interference-free uplink data. This interference cancellation matrix is ​​calculated using any idle resource block to evaluate the interference signals from adjacent base stations. In this embodiment, the target base station calculates the interference cancellation matrix of adjacent base stations using idle resource blocks, and then uses the interference cancellation matrix to cancel the interference signals, achieving the goal of quickly and effectively suppressing co-channel interference from adjacent base stations. This further improves the uplink data demodulation capability of the target base station.

The utility model discloses a Bluetooth debugging handle. The Bluetooth debugging handle comprises a first connecting part, a second connecting part and a cable, a connecting terminal, a power management module, a data conversion module, a Bluetooth transceiving module and an interference elimination module are also arranged in the second connecting part; the connecting terminal is connected with the input end of the power management module, the data conversion module and the interference elimination module respectively, and is connected with the first connecting part through a cable; the output end of the power management module is connected with the data conversion module and the Bluetooth transceiver module. Firstly, the first connecting part is inserted into the sun-tracking controller to achieve electric connection, then a fourth chip of the Bluetooth receiving and transmitting module communicates with the sun-tracking controller through the data conversion module, and then the Bluetooth receiving and transmitting module communicates with a handheld device of a worker through wireless Bluetooth. And a wireless communication bridge is established for the sun-tracking controller and the handheld device. The method is simple to operate, various in supported equipment, controllable in debugging distance and free of physical length limitation.

The invention provides a coding random access method and system for a multi-hop wireless ad hoc network, and belongs to the technical field of wireless communication, and the coding random access method comprises the following steps: the communication time is divided into a media access control (MAC) frame consisting of M time slots; the user equipment determines the number d of data packet copies according to a preset irregularity distribution function lambda (x), randomly selects d different time slots for the d copies from the MAC frame, allocates a transmitting power level for each copy and then sends the data packet copies, and each data packet copy carries pointer information indicating the positions of other copies of the user equipment in the MAC frame; and the sink node receives the signal of the MAC frame and executes iterative decoding and interference elimination, for a time slot with a conflict, when the signal to interference plus noise ratio (SINR) of a data packet copy exceeds a decoding threshold, the copy is decoded, and the data packet copy is decoded according to the pointer information obtained by decoding. And eliminating the signal components of the decoded data packet copy from the received signal of the corresponding time slot.

The invention provides a tag inventory method and device and electronic equipment, and relates to the technical field of wireless, and the method comprises the steps that a reader-writer sends a first message; under the condition that the N response messages received by the reader-writer collide, the reader-writer sends a second message to the N tags; under the condition that the label number of the returned response message is one, the reader-writer backtracks an interference response message which is closest to the first response message of the target label and contains a second response message of the target label, and performs interference elimination on the interference response message according to the first response message to obtain a residual response message; and the reader-writer performs inventory on the first tag and the tag corresponding to the residual response message. According to the method and the device, the response result of the multiple tags is backtracked, and interference elimination is performed on the response result of the multiple tags according to the response result of the single tag, so that the residual response message is decoded, the broadcasting frequency of a reader-writer is reduced, and the inventory efficiency of the tags can be improved.

This invention discloses a decoding device, driving device, and parameter determination method for a sine / cosine encoder. The device includes: a sine / cosine encoder for detecting the rotor position information of a motor and outputting sine / cosine differential signals; a differential operational amplifier unit for differentially processing the sine / cosine differential signals to obtain sine / cosine analog signals; the sine / cosine analog signals are divided into two paths; an interleaved triggering unit for interleaved triggering of the sine and cosine signals in the first path of the sine / cosine analog signals to obtain sine / cosine square wave signals; an ADC unit for analog-to-digital conversion of the second path of the sine / cosine analog signals to obtain sine / cosine digital signals; and a control unit for determining the rotor position information of the motor based on the sine / cosine square wave signals and the sine / cosine digital signals. This scheme improves the accuracy of the angular position information of the motor obtained by the servo driver by utilizing the interleaved triggering unit to eliminate the influence of interference on pulse counting, thereby improving the control precision of the servo driver.

The invention discloses a photovoltaic power station anomaly detection system based on multi-modal perception, and the system comprises the following steps: a topology collection module which is used for constructing an equipment topological graph and a data synchronization graph, collecting node signal data, and generating a multi-modal signal data set; the resonance identification module is used for constructing an initial propagation relation graph according to correlation values among the nodes; the atlas construction module is used for inputting the initial propagation relation atlas into the improved AGCN model and outputting a causal propagation atlas; the anomaly elimination module is used for constructing an environment data sequence and generating a corrected propagation map; the path control module is used for updating and correcting the propagation atlas and outputting a stable control atlas; and the weight updating module is used for generating an event label set and outputting a final result graph. The method has the advantages of high identification accuracy, strong interference elimination capability, high node positioning precision and the like, and can effectively improve the operation safety and fault response efficiency of the photovoltaic power station.

The application relates to the technical field of communication interference elimination, in particular to a pulse interference elimination method for a power carrier communication chip, which comprises the following steps: acquiring carrier signals of each communication node in a power carrier communication network and the length of a power line between any two communication nodes; acquiring suspected pulse noise points; calculating pulse noise weights of the suspected pulse noise points; intercepting each suspected pulse signal in the carrier signal; obtaining a pulse noise spectrum diagram of each communication node; calculating line loss ratios between any two communication nodes; obtaining a comprehensive pulse spectrum diagram of each communication node; calculating an attenuation ratio of each frequency position; obtaining a noise suppression spectrum diagram; and obtaining a carrier signal after noise suppression based on the noise suppression spectrum diagram, so as to eliminate pulse interference in the carrier signal. The application dynamically filters the frequency domain characteristics of the carrier signal, and improves the communication quality of the power carrier communication chip.

The invention provides a negative pressure cooperative multi-source fusion shield segment defect treatment method and system, and relates to the technical field of tunnel engineering components, and the method comprises the following steps: hoisting a shield segment into a closed negative pressure treatment cabin for positioning and interference elimination; identifying original defect features according to the quality detection model; inputting the defect original features into the D-S evidence theory optimized by the multi-source fusion network to quantify and grade a defect grading result; when the defect grading result is the first level, defect integrated processing is conducted on the shield segment through a reinforcement learning strategy network, and a first-level repairing result is obtained; when the defect grading result is a second level, planning a repairing scheme for the shield segment in real time through a greedy algorithm to obtain a second-level repairing result; and performing quality scoring on the repair result, and when the quality score does not reach the standard, generating an adjustment parameter through a reinforcement learning strategy network until the quality score reaches the standard, thereby forming a defect processing scheme. The problems of out-of-control quality of the duct piece and potential safety hazards of long-term service of the tunnel are solved.

The invention relates to a rapid determination method for sewage quality based on a spectrum method, and belongs to the technical field of water quality detection. According to the method, a sewage sample is subjected to filtering, standing and temperature control pretreatment to remove interference, 200-2500nm full-spectrum data is obtained through a dynamic optical path spectrum acquisition module, and various interference is eliminated through multi-stage pretreatment of sub-band baseline correction, scattering correction and self-adaptive noise reduction; then inputting an attention-enhanced deep learning model to extract a targeted water quality index feature vector, realizing synchronous quantification of chemical oxygen demand, ammonia nitrogen, total phosphorus and total nitrogen through multi-model weighted fusion, and finally outputting a result through two-stage verification of model confidence verification and statistical abnormal value detection. According to the method, the problems of narrow detection concentration range, poor feature extraction pertinence, insufficient result reliability and poor interference elimination effect in the prior art are solved, the detection time is less than or equal to 3 minutes, the accuracy rate of each index is greater than or equal to 97%, the detection limit meets the GB 3838-2002 standard, and the method can be widely applied to on-site rapid monitoring of industrial drain outlets, sewage treatment plants and other scenes.

This invention relates to the field of monitoring technology for water-based sodium-ion battery swapping boxes. The invention discloses a dynamic monitoring system and method for water-based sodium-ion battery swapping boxes, wherein the monitoring method includes the following steps: S1, real-time identification of operating conditions; S2, dynamic correction of monitoring data; S3, multi-parameter fusion anomaly diagnosis; S4, operating condition adaptation and graded protection; S5, dynamic health assessment; S6, group collaborative monitoring and model iteration. The invention also discloses a dynamic monitoring system for water-based sodium-ion battery swapping boxes, which includes a local monitoring terminal, a swapping station edge computing platform, and a cloud platform management center. This invention quantitatively identifies the full-cycle operating conditions of the swapping box, and then retrieves a dedicated interference elimination algorithm and correction parameters based on the operating condition identifier to perform customized data processing for the core interference types of different operating conditions.