50 results about "Waveform correlation" patented technology

The invention discloses a wind power plant data synchronous correction method based on view topology and a mask graph neural network, and belongs to the field of wind power plant data processing and artificial intelligence space-time sequence prediction.The method comprises the steps that firstly, historical space-time observation data of unit nodes are obtained, and a space-time feature tensor is constructed; generating a mask matrix; extracting space and time sequence waveform correlation characteristics of a plurality of unit nodes, and constructing a global multi-view adjacency matrix; inputting the spatio-temporal feature tensor and the global multi-view adjacency matrix into a spatio-temporal diagram neural network, performing blocking and shielding operation in a message passing stage of the network, extracting full-field features, and outputting an initial deduction sequence; and obtaining a boundary physical residual error, reversely compensating the boundary physical residual error to the initial deduction sequence, and generating and outputting final correction data. According to the method, test data high-fidelity error correction under high concurrency missing rate and strong noise interference is realized, and the space-time diagram calculation memory overhead of a bottom-layer deep learning framework is remarkably reduced by designing a static topology cache mechanism.

The invention provides a bolt ultrasonic axial force detection method and system based on multi-mode signal cooperative processing. The method comprises the following steps: firstly, carrying out band-pass filtering and envelope extraction on a bolt ultrasonic echo signal, and constructing a two-factor adaptive threshold value based on a noise standard deviation and a peak value proportion to realize stable peak value identification; and then screening is carried out by using a peak energy ratio and a waveform correlation coefficient, and multiple reflections and false peaks are eliminated. And aiming at the selected effective wave crest, when the rising edge energy centroid method is adopted to extract sound, the drift caused by noise and coupling change is reduced. In order to enhance the reliability, a frequency domain phase difference verification mechanism is introduced, frequency domain time delay is obtained by calculating an FFT conjugate phase difference between a current signal and a reference signal, and consistency comparison is carried out on the frequency domain time delay and a main measurement sound time result; and when the deviation exceeds the limit, abnormal processing or fusion output is triggered, so that double verification of the time domain and the frequency domain is realized. And finally, obtaining an axial force value by combining temperature compensation and a calibration model. The method improves the stability and adaptability of ultrasonic axial force measurement.

A wireless device may modulate a first portion of data of a transport block associated with a joint communication and sensing (JCS) waveform according to a first modulation scheme of a set of modulation schemes for sensing. The wireless device may modulate a second portion of data of the transport block according to a second modulation scheme. The wireless device may map the modulated first portion of data to a first set of resource elements associated with sensing and may map the second portion of data to a second set of resource elements associated with data communications. The wireless device may transmit the transport block including the mapped first and second portions of data via the JCS waveform. In some cases, the wireless device may transmit the transport block according to one or more parameters of a configuration for the JCS waveform.

A system includes one or more microphones arranged to capture an audio stream, a transceiver arranged to exchange wireless data signals with mobile communications devices in a vicinity of the one or more microphones, a network element communicatively coupled to the transceiver, and data processing means communicatively coupled to the one or more microphones and the network element. The data processing means are configured to perform operations including comparing data indicative of a waveform within the audio stream with data transmitted within the network element, identifying a communication channel associated with the waveform and over which data is exchanged between the network element and a first mobile communications device via the transceiver based on the comparison, and modifying data exchanged between the network element and the first mobile communications device over the identified communication channel to control an audio output of the first mobile communications device.

This invention relates to the field of smart city lighting facility operation and maintenance, and discloses a method and system for assessing the health status and predicting faults in street light networks. The method includes the following steps: First, energy domain and information domain data of street light nodes are collected. A dynamic topology map with isomorphic information and energy domains is constructed based on electrical waveform correlation and channel characteristic similarity. Node features are reconstructed using a graph attention network, and passive monitoring residuals are calculated. Based on the dual-threshold judgment results of the residuals, when a node falls into a suspected grayscale range, an active micro-perturbation excitation mechanism is automatically triggered, breaking the steady state by issuing a fine-tuning light command. Subsequently, the degree of anomaly in the circuit physical layer is quantified by comparing the integral deviation between the actual physical response and the ideal response based on the transfer function. Finally, the passive residuals and active deviations are dynamically fused to output a full lifecycle health index. This invention solves the problem of difficulty in identifying early, weak faults under complex noise conditions, improving the accuracy of predictive maintenance of street light networks.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform a crest factor reduction on a radio frequency (RF) waveform in multiple passes, wherein the multiple passes each include: a clipping operation to reduce a peak-to-average power ratio (PAPR) associated with the RF waveform according to a threshold; and a filtering operation to remove at least a portion of out-of-band emission from the clipped RF waveform. The UE may transmit the RF waveform over a wireless channel, wherein the RF waveform transmitted over the wireless channel satisfies a spectral mask. Numerous other aspects are described.

The application provides a few-channel switching direction finding method based on blind source separation, and belongs to the technical field of emergency search and rescue direction finding. The method comprises the following steps: constructing a corresponding original signal matrix of each array element switching, and performing pretreatment to obtain a corresponding standard signal matrix; performing blind source separation on each standard signal matrix to obtain a corresponding separation matrix and a separation signal matrix; constructing a corresponding array manifold matrix of each array element switching, and calculating all waveform correlation coefficients; using all waveform correlation coefficients, completing signal alignment of all array manifold matrices, and using a reference matrix to obtain a calibration array manifold matrix corresponding to each array element switching; and using all calibration array manifold matrices to perform direction of arrival estimation on each rescue target. The application can effectively estimate the noise of a few-channel direction finding system, and improve the direction finding precision, angle resolution capability and robustness of the few-channel direction finding system.

Systems and methods that deliver a continuous partial nerve conduction block are described. A waveform generator can configure one or more direct current (DC) waveforms to provide a continuous partial nerve conduction block. One or more electrodes can deliver the one or more DC waveforms to provide the partial block to the neural structure. Feedback can be provided to the waveform generator related to the partial block. The feedback includes monitoring a property associated with the partial block and altering a parameter associated with the one or more direct current waveforms in response to the property associated with the partial block.

Systems and methods that deliver a continuous partial nerve conduction block are described. A waveform generator can configure one or more direct current (DC) waveforms to provide a continuous partial nerve conduction block. One or more electrodes can deliver the one or more DC waveforms to provide the partial block to the neural structure. Feedback can be provided to the waveform generator related to the partial block. The feedback includes monitoring a property associated with the partial block and altering a parameter associated with the one or more direct current waveforms in response to the property associated with the partial block.

A method of characterizing particles in flow cytometry is described. The method includes detecting a plurality of pulse waveforms resulting from particles passing through an interrogation zone in a flow cytometer. The plurality of pulse waveforms include gaussian pulse waveforms and non-gaussian pulse waveforms. The method includes discriminating the non-gaussian pulse waveforms from the gaussian pulse waveforms, selecting data points from the non-gaussian pulse waveforms, and extracting parameters based on the data points selected from the non-gaussian pulse waveforms. The method includes characterizing particles associated with the non-gaussian pulse waveforms based on the parameters.

This invention discloses a deep learning-based method and system for pairing gravitational waves using gravitational lensing. The method includes: acquiring time-series strain data from a gravitational wave detector; performing frequency domain whitening on the data and converting it back to the time domain, and extracting fixed-length whitened strain segments; inputting the data into a twin encoder; selecting several other events with the highest similarity for each gravitational wave event based on the cosine similarity between feature vectors to form a candidate pairing set; calculating the waveform cross-correlation using a generalized cross-correlation-phase transform algorithm to obtain a refined similarity score and an estimate of the relative time delay between event pairs; constructing a weighted graph, and obtaining the final pairing result by solving for the maximum weight matching of the graph. In this invention, the twin encoder is used to reduce the dimensionality of high-dimensional time-domain data, and a coarse-screening strategy avoids full pairwise comparisons of the entire catalog, greatly improving the search speed on large-scale datasets.

The application discloses a cable fault positioning method based on double-end pulse matching and relates to the technical field of discharge fault monitoring. The application effectively distinguishes reflection events from independent events by performing waveform cross-correlation analysis, amplitude and time stamp deviation determination on pulse events in the same HFCT, and the width of a shielding window is obtained by using reflection interval and candidate basic interval statistical fusion, so that false reflection pulses are marked as invalid events or are re-determined, thereby eliminating the interference of reflection pulses on independent event counting. Further, through time regularization alignment of double-end independent events, Hungarian algorithm minimum weight matching and Mahalanobis distance secondary matching, it is ensured that the same discharge event is correctly matched at both ends, and false positioning points caused by reflection are avoided. Finally, the method can output a discharge repetition rate based on true independent event statistics and accurately position a discharge point.

This application discloses a node data communication system and method based on a chained industrial Ethernet, relating to the field of data communication technology. It calculates the waveform correlation coefficient between real-time torque-time waveform data and standard torque-time waveform data, calculates the lag time between their peak points, compares the waveform correlation coefficient with a first preset threshold, and compares the absolute value of the lag time with a second preset threshold. Based on the comparison result, a waveform quality label is generated. The waveform quality label includes a first label, a second label, and a third label. In response to the waveform quality label being the third label, a high-priority communication window request is sent to the master station. After receiving the high-priority communication window authorized by the master station, the real-time torque-time waveform data cached in the real-time data caching module is packaged into a third reporting data frame group, and the third reporting data frame group is sent to the master station within the high-priority communication window. This application improves the efficiency of node data communication.

The invention relates to the technical field of data processing, in particular to a prefabricated data center fault alarm method and system based on an algorithm model. The method comprises the following steps: acquiring multi-dimensional real-time operation data of target equipment and neighborhood associated equipment in a prefabricated data center, and constructing equipment space topology; calculating a normalized space potential energy weight based on the rated power, the physical distance and the airflow impedance coefficient, and determining a dynamic coupling conduction coefficient in combination with a Pearson's correlation coefficient and waveform cross-correlation lag time; calculating the external interference synthesis field intensity based on the abnormal deviation and the conduction coefficient; and by using an LSTM predicted value, introducing an adaptive interference correction gain to subtract the field intensity influence to obtain an essential residual error, and realizing fault alarm of the prefabricated data center. According to the method, the accuracy of fault alarm is improved by constructing equipment space topology and potential energy weight, calculating a dynamic coupling conduction coefficient, evaluating external interference synthesis field intensity and introducing self-adaptive correction gain and eliminating interference.

The invention discloses a gravitational lens gravitational wave pairing method and system based on deep learning, and the method comprises the steps: obtaining time sequence strain data of a gravitational wave detector, carrying out the frequency domain whitening processing of the data, converting the data back to a time domain, and carrying out the interception to obtain a whitening strain fragment with a fixed length; inputting into a twin encoder; selecting a plurality of other events with the highest similarity for each gravitational wave event based on the cosine similarity between the feature vectors to form a candidate pairing set; a generalized cross-correlation-phase transformation algorithm is adopted to calculate waveform cross-correlation, and refined similarity scores and relative time delay estimation between event pairs are obtained; and constructing a weighted graph, and obtaining a final pairing result by solving the maximum weight matching of the graph. According to the method, dimension reduction is carried out on the high-dimensional time domain data by using the twin encoder, and full-amount pairwise comparison on directories is avoided through a coarse screening strategy, so that the search speed on a large-scale data set is greatly improved.

According to an embodiment, a preamble detection circuit includes a slicer that normalizes a demodulated Amplitude Shift Keying (ASK) signal to generate a binary waveform, a correlator that performs correlation with a reference preamble sequence, and decision logic that determines if a valid preamble is detected. The circuit enables a primary demodulation chain to remain in a low-power state until a valid preamble is identified, providing efficient preamble detection for wireless power transfer systems while minimizing power consumption during communication inactivity. The circuit's configurable parameters allow optimization for different operating conditions and communication protocols.

According to an embodiment, a preamble detection circuit includes a slicer that normalizes a demodulated Amplitude Shift Keying (ASK) signal to generate a binary waveform, a correlator that performs correlation with a reference preamble sequence, and decision logic that determines if a valid preamble is detected. The circuit enables a primary demodulation chain to remain in a low-power state until a valid preamble is identified, providing efficient preamble detection for wireless power transfer systems while minimizing power consumption during communication inactivity. The circuit's configurable parameters allow optimization for different operating conditions and communication protocols.

The application discloses a structure impact positioning method based on kurtosis time series and multi-feature image fusion, and belongs to the technical field of structure health monitoring. The method calculates the kurtosis time series of an impact stress wave signal, extracts three features of a wave arrival time difference, a signal amplitude and a waveform correlation coefficient of the kurtosis time series, respectively uses the wave arrival time difference, the signal amplitude and the waveform correlation coefficient to perform imaging by using a hyperbolic curve principle, a delay accumulation principle and a similarity principle, and finally realizes impact positioning by normalizing and multiplying three images. The impact positioning method does not depend on a narrowband wave model, does not need to use complex signal processing means and interpret a signal mode, extracts multiple features for positioning, has high imaging resolution and positioning precision, and has a good application prospect in impact positioning of a plate-shaped structure.

The invention discloses a near-well anomalous body analysis method, device and equipment based on an acoustic vector phased array, and a medium, and the method comprises the steps: calculating the time needed in the process that an elastic wave is transmitted to a near-well anomalous body and returns an echo to each sound pressure receiving unit from the near-well anomalous body, determining a first similarity coefficient, and drawing an initial three-dimensional sound wave image through the first similarity coefficient; calculating a three-dimensional scanning receiving waveform based on the echo signal, determining a second similarity coefficient, and optimizing the initial three-dimensional sound wave imaging based on the second similarity coefficient; calculating a particle vibration velocity circumferential component waveform based on the three-dimensional scanning receiving waveform, determining a third similarity coefficient and a sound pressure and vibration velocity waveform correlation coefficient, and adjusting the optimized three-dimensional sound wave image to obtain a target three-dimensional sound wave image; the abnormal body beside the well is analyzed through target three-dimensional sound wave imaging, the imaging signal-to-noise ratio and the azimuth measurement accuracy of the abnormal body beside the well are improved, the detection capacity of weak and deep abnormal bodies is enhanced, and the data processing efficiency and practicability are improved.

A method for detecting relative movement of a position of beta sensors comprises detecting a characteristic associated with an output waveform from at least two beta sensors generated responsive to passage of an outlier indicator of a beta ring past the at least two beta sensors, comparing the detected characteristic with a reference point for the characteristic associated with the output waveform for the at least two beta sensors within a controller, determining if the detected characteristic associated with the output waveform is different from the reference point for the characteristic associated with the output waveform by a first amount within the controller and generating a fault code indicating that the at least one beta sensor has moved at least the first amount. The first amount indicates that the at least one beta sensor has moved the first amount from a previous position.

Embodiments of the present disclosure relate to a waveform design for an integrated sensing and communication system (100). In accordance with some embodiments of the present disclosure, a BS may: determine an initial waveform (211) for each UE (104) of a set of UEs (104) based on a multiple access scheme for wireless communication with the set of UEs (104); generating a set of waveforms based at least in part on the initial waveform of the set of UEs (104) and a set of weighting coefficients, each waveform of the set of waveforms corresponding to one UE (104) of the set of UEs (104), the set of weighting coefficients associated with the set of generated waveforms (213); determining the set of weighting coefficients based at least in part on approximating a combination of the set of generated waveforms as a radar waveform (215); transmitting an indication of the set of weighting coefficients associated with the set of generated waveforms to the set of UEs (104) (217); and transmitting (219) the combination of the set of generated waveforms to the set of UEs (104).

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, during a connected mode of the UE, a low power wakeup signal (LP-WUS), wherein the LP-WUS is associated with an orthogonal frequency division multiplexing (OFDM) modulated LP-WUS waveform that is generated based at least in part on one or more of an OFDM sequence or an on-off keying (OOK) envelope, and wherein the OFDM sequence carries one or more information bits of the LP-WUS. The UE may receive a physical downlink control channel (PDCCH) transmission based at least in part on the LP-WUS, wherein the PDCCH transmission schedules uplink data or downlink data for the UE. Numerous other aspects are described.

The invention provides an electromagnetic pulse near-region waveform inversion optimization method and system. Near-region features are indirectly reconstructed through multi-station far-region waveform data; secondly, aiming at the path difference sensitivity caused by the fact that the traditional single-path propagation model does not fully consider the comprehensive influence of the earth surface, geomagnetism and ionosphere environment, the environmental adaptability is improved by establishing a multi-path broadband attenuation channel model; thirdly, complexity and subjectivity of manual adjustment of amplitude-phase parameters are eliminated, and an AdamW optimizer is introduced to realize automatic iterative optimization; finally, the problems that inversion results of multiple stations are low in correlation and inconsistent in precision are solved, the reliability and accuracy of the inversion results are remarkably improved by establishing a multi-target optimization mechanism with the minimization of the root-mean-square error and the maximization of the waveform correlation as targets, and high-precision technical support is provided for electromagnetic pulse near-region feature analysis and far-region waveform simulation.

The embodiment of the application provides a 12-pulse interference suppression method and device based on waveform correlation coefficient, and relates to the technical field of transformer monitoring. The method first collects current signals at the core and the grounding wire of the clamping piece of the converter transformer by using a wideband current sensor, and performs mean removal processing on the current signals; then all pulse signals in the current signals are extracted; then 12 signals without discharge pulses are continuously selected from the extracted pulse signals as reference signals; after signal alignment, the correlation coefficients between the pulse signals and the 12 reference signals are calculated respectively, and a correlation coefficient vector is obtained; finally, a correlation coefficient threshold is set, and the 12-pulse interference signals are removed by comparison. The method can realize 12-pulse electromagnetic interference suppression of the converter transformer, provides important support for state evaluation of the converter transformer, and has good practical value.

The invention discloses a line protection method and device, electronic equipment and a storage medium, through the line protection method and device, time domain current signals at the head end and the tail end of a protected line are synchronously collected, and an internal fault, an external fault and normal disturbance are distinguished based on a waveform correlation metric value of a transient current data sequence, so that the dependence on an overcurrent principle is eliminated, and the reliability of the line protection is improved. According to the method, real faults and false fault characteristics of load switching under the current limiting working condition can be accurately identified, so that the technical problems that existing protection based on the over-current principle is easy to refuse to operate under the current limiting working condition of the distributed power supply and misjudgment is caused by similar fault characteristics generated by normal load switching can be solved; the technical effects of improving the action accuracy and reliability of DC micro-grid line protection, avoiding protection action refusal and maloperation, and further ensuring stable operation of the DC micro-grid in a distributed energy access and energy storage integrated scene are achieved.

Methods, systems, and devices for wireless communication are described. Various aspects relate to waveform specific closed-loop antenna selection. Some aspects more specifically relate to mechanisms according to which a user equipment (UE) may receive per-waveform antenna selection results from a network entity. In some examples, the UE may transmit an information report to the network entity to indicate parameters associated with a set of antennas of the UE, with the parameters including a respective set of parameters for each of multiple waveforms supported or used by the UE. For example, the parameters may include a first set of parameters associated with the set of antennas for a first waveform and a second set of parameters associated with the set of antennas for a second waveform. The UE may receive the per-waveform antenna selection results from the network entity based on the information report.

This application discloses a method and apparatus used in a communication node for wireless communication. The communication node receives a first RRC message, the first RRC message instructs a first waveform and a second waveform for the uplink of a first serving cell, and a first MAC A subPDU is transmitted, and the first MAC subPDU includes a first MAC CE and a first field. The first field of the first MAC subPDU and at least the first field of the first MAC subPDU in both the first MAC subPDU and the first RRC message are used to determine whether the first MAC CE contains a first type of power information for a first serving cell and whether the first type of power information relates to at least a first waveform among a first waveform and a second waveform, where the first waveform and the second waveform are different from each other. The solution provided by this application reduces signaling overhead to reduce the impact on the PHR procedure of existing protocols.

The application discloses a fault direction distinguishing method and system based on voltage and current change amount, and belongs to the technical field of power system relay protection. The method comprises the following steps: when a fault occurs at the outlet of a new energy power source station on one side of a sending line, three-phase measured voltages and currents before and after the fault at the protection installation site are obtained; the voltage and current change amounts of each phase and the voltage change amounts between each phase are calculated; the impedance voltage drop change amounts between each phase and each phase at the protection installation site to the system side are constructed; the measured voltage after the fault is brought into the phase selection criterion to determine the fault phase; the correlation coefficient of the voltage change amount waveform and the impedance voltage drop change amount waveform of the fault phase is calculated; and the waveform correlation coefficient is brought into the preset criterion to distinguish the outlet fault direction. The criterion provided by the application is suitable for the grid connection scene of a double-fed type and an inverter type new energy power source station through a sending line, and can effectively solve the problem that the positive sequence voltage polarization direction element cannot correctly judge the internal and external faults when an outlet fault occurs, thereby ensuring reliable action.

The invention relates to the technical field of power equipment state monitoring, in particular to a transformer partial discharge interference suppression method and system based on reference channel time domain gating and correlation analysis, and the method comprises the steps: synchronously collecting signal sequences of a main sensor and a reference sensor, and respectively carrying out the pulse detection to obtain a pulse event set; traversing a main channel pulse, if a pulse meeting a time correlation condition exists in a reference channel, determining that interference exists and removing the interference, otherwise, marking that the interference exists as suspected internal partial discharge; performing waveform correlation discrimination on the suspected pulse, if a normalized cross correlation coefficient of a main channel waveform and a reference channel waveform at a corresponding moment is greater than a preset threshold, determining interference, otherwise, determining real partial discharge; and finally collecting all real partial discharge pulses to form a partial discharge data set. Through a dual discrimination mechanism of time domain gating and correlation analysis, external interference is effectively eliminated while high sensitivity is kept, the defects of a traditional filtering method are overcome, and resource dependence of a complex algorithm is avoided.

The present application relates to the technical field of data processing, and more particularly to a prefabricated data center fault alarm method and system based on an algorithm model. The method comprises: obtaining multi-dimensional real-time running data of a target device and neighborhood associated devices in a prefabricated data center, and constructing a device space topology; calculating a normalized space potential energy weight based on rated power, physical distance and air flow resistance coefficient, and determining a dynamic coupling conduction coefficient in combination with a Pearson correlation coefficient and a waveform cross-correlation lag time; calculating an external interference combined field strength based on an abnormal deviation amount and the conduction coefficient; using an LSTM prediction value, introducing an adaptive interference correction gain, subtracting the field strength influence, obtaining an essential residual error, and realizing fault alarm of the prefabricated data center. By constructing the device space topology and the potential energy weight, calculating the dynamic coupling conduction coefficient, evaluating the external interference combined field strength, introducing the adaptive correction gain, and eliminating the interference, the accuracy of the fault alarm is improved.