35 results about "Synchronization algorithm" patented technology

The invention relates to the technical field of Internet of Things gateways, and discloses an Internet of Things gateway device and system based on edge computing, and the device comprises a hardware heterogeneous computing module and a multi-interface protocol adaptation module. The edge calculation local processing module is used for performing preprocessing, feature extraction and local decision on the acquired terminal data; the network redundancy and self-healing module is used for realizing accurate network disconnection detection, seamless switching of a main network and a standby network and equipment fault self-recovery through a multi-dimensional network health degree evaluation algorithm; the local autonomous storage module is used for realizing hierarchical storage of high-frequency data and network disconnection emergency data and seamless synchronization after network recovery through network disconnection data hierarchical caching and an incremental synchronization algorithm; and the cloud collaborative management module is used for realizing remote configuration, OTA upgrading and state monitoring. The method is high in integration, low in delay and fast in response, adapts to real-time scenes, saves bandwidth cost, improves cloud efficiency, is high in reliability, and realizes network disconnection and continuous operation.

The application provides a network distribution DTU data synchronization method supporting multiple synchronization algorithms, comprising: setting multiple synchronization algorithm calculation modules, a synchronization algorithm self-switching module and a sampling synchronization calculation module for a DTU device; the multiple synchronization algorithm calculation modules configure multiple synchronization algorithms and calculate synchronization parameters based on each synchronization algorithm, including synchronization quality Q; the synchronization algorithm self-switching module selects a synchronization algorithm with optimal synchronization quality according to the network type used for communication between each DTU device, the synchronization quality Q and the accuracy of each synchronization algorithm, and obtains the synchronization parameters corresponding to the synchronization algorithm with optimal synchronization quality; the sampling synchronization calculation module uses the synchronization parameters provided by the synchronization algorithm self-switching module and the opposite side sampling data sent by the opposite side DTU device to perform calculation, and converts the opposite side sampling data into synchronization data synchronized with the local side sampling data. The application can realize sampling synchronization of the DTU device under multiple synchronization algorithms in the scene of multiple opposite side devices interconnected.

The invention discloses a method and a device for testing embedded software of airborne equipment. The method comprises the following steps: calculating a current clock skew drift rate according to time information in a synchronization message sent by target equipment; calculating a predicted clock skew with the target device according to the current clock skew drift rate; dynamically adjusting the clock frequency according to the preset clock skew, and synchronizing with the target equipment; and executing the test case to test the to-be-tested software on the target equipment. According to the high-precision time synchronization method based on the drift adaptive synchronization algorithm, the problems of real-time verification and time synchronization in embedded software testing are solved, the requirement for high time precision of civil aircraft airborne equipment is met, and the precision and robustness of test cases are improved.

The application discloses a kind of security systems of identity fragment cross dynamic verification, it is related to network security verification technical field.System includes verification request module, fragment extraction module, dynamic combination module, session security module, verification feedback module, salted hash preprocessing module, equipment environment detection module and dynamic rule synchronization algorithm module.By extracting mobile phone number and identity card fragment and carrying out irreversible de-identification processing, cross combination is generated according to dynamic rule Verification password, combined with unique session identifier and end-side encryption realizes one-time security verification.The application does not store complete identity information, can dynamically switch verification rule, has the advantages such as anti-fraud, anti-cracking, data compliance, full-scene application, etc., and is suitable for financial transfer, e-commerce, government affairs, online car-hailing, points mall and other high-security demand scenes.

The invention relates to the technical field of data analysis, in particular to a fault signal phase synchronization method and device based on a data fusion algorithm. The method comprises the following steps: preprocessing a collected bearing operation data signal; the preprocessed data signals are fused, and reliable phase offset estimation of each operation period and position is calculated; the fused data signals are processed through waveform matching and a phase correction algorithm, phase deviation caused by driving speed and load changes is eliminated, and data signals after phase synchronization are obtained; and based on the data signals after phase synchronization, bearing fault features are extracted, and a phase consistency coefficient is calculated. According to the technical scheme, the identifiability of fault signal characteristics is improved through multi-sensor data fusion and an advanced phase synchronization algorithm, and an important technical means is provided for fault diagnosis of rotating machinery.

The invention relates to the technical field of photovoltaic tracking support control, and particularly discloses a safety protection method based on a dual-chip photovoltaic tracking support control system, which comprises the following mechanisms: a multi-motor PID synchronization algorithm optimization mechanism including an amplitude threshold PID historical data clearing strategy; starting a self-checking mechanism, including multi-component detection and fault grading processing; the dynamic detection mechanism adopts a multi-thread parallel detection technology; according to the delayed power failure mechanism, continuous power supply after power failure is achieved through a capacitor energy storage array and a DC-DC converter; a data comparison monitoring mechanism is operated, and motor current and Hall data are compared in real time for fault diagnosis; according to the motor position calibration mechanism, Hall data and PID historical data are reset at a physical limit position; according to the dual-threshold mechanism, a main chip and an auxiliary chip are respectively provided with a Hall difference threshold, and grading fault response is achieved. The comprehensive scheme of efficient synchronous control and multi-level safety protection is integrated, and stable, reliable and safe operation of the photovoltaic tracking support is ensured.

The invention relates to the technical field of distributed storage, and discloses a data processing method and device of a distributed storage system, equipment and a medium, the method comprises the following steps: obtaining a data write request initiated to the distributed storage system, and analyzing the data write request to obtain first target data; determining a first copy block device corresponding to the data write request, wherein the first copy block device is bound with a plurality of target storage nodes; and synchronously storing the first target data to a plurality of target storage nodes based on a replication strategy of the first replication block device. By implementing the method provided by the invention, the consistency of the copy data among the plurality of storage nodes can be ensured, the first target data is synchronously stored to the first storage node and the one or more second storage nodes based on the binding relationship, a complex synchronization algorithm is not needed, and the overall performance of the distributed storage system can be improved.

The invention relates to the technical field of intelligent classroom analysis and multi-modal data processing, in particular to a classroom intelligent analysis data acquisition method and system for cross-modal synchronization algorithm optimization. The method comprises the following steps: deducing a teaching event probability from multi-modal data through a specific model, and calculating a comprehensive acquisition value index in combination with cross-modal consistency and event time sequence logicality; the system performs real-time evaluation according to the value index, compares the value index with a preset threshold value, and generates a hierarchical acquisition instruction to adaptively control a data storage strategy; the method has the core advantages that through intelligent evaluation, only high-value teaching fragments are selectively stored, collection of invalid data can be effectively avoided, the cost of data storage and subsequent analysis is remarkably reduced, and the utilization efficiency of storage resources is greatly improved.

The invention provides a multi-mode NFC role switching AI tide play base device and an interaction method, and aims to solve the problems that role switching is not dynamic, multi-mode alignment is difficult, the safety is low, the calculation requirement is high and the like in an existing NFC tide play technology. The base device comprises an NFC identification module, a multi-mode sensor layer, an edge computing unit, a cloud interface and a security module; the interaction method comprises the steps that a user places an IP hand board with an NFC label on a base, reads a label ID and then downloads and loads a role data packet, the multi-mode sensor collects input and fuses the input, the edge calculation unit conducts local reasoning to generate a response, the safety module adopts non-falling encryption to protect the IP copyright, and a lamplight synchronization algorithm shows the lamplight effect. According to the invention, flexible switching of IP roles, real-time multi-mode fusion response, data encryption protection and low-delay interaction are realized, and the competitiveness of the AI tidal play base in the IP derivative market is improved.

The invention discloses a clock synchronization detection method, and relates to the technical field of clock synchronization, and the method comprises the steps: determining a reference clock in a clock system, and determining a conversion relation expression between the clock time of the reference clock and the clock time of other clocks; substituting the clock time of other clocks except the reference clock into the conversion relation expression to obtain clock time, and taking the clock time as first synchronous detection time corresponding to the reference clock; time obtained based on a preset synchronization algorithm is used as second synchronization detection time corresponding to the reference clock; comparing the first synchronous detection time with the second synchronous detection time to obtain a comparison detection result; and if the comparison detection result is abnormal, carrying out abnormal processing on the clock system. According to the invention, the synchronization algorithm of the clock system is detected based on the first synchronization detection time, and related processing is carried out when abnormality is detected.

The invention discloses a wireless network time synchronization method and system, and a storage medium, and the method comprises the steps: collecting network node time data, forming an original sampling sequence, and generating a whole network clock observation matrix; based on the connection strength between each pair of network nodes, constructing a Laplacian matrix; on the basis of an objective function of a graph regularization robust low-rank decomposition model, carrying out joint optimization solution on the whole-network clock observation matrix, and alternately updating a low-rank matrix and a sparse matrix; after convergence conditions are met, drift and offset correction values are calculated, and correction parameters are generated; and performing wireless network time synchronization according to the correction parameter. The problem that an existing synchronization algorithm is unstable in precision under the conditions of strong interference, packet loss and dynamic topology is solved, and unification of high precision and high robustness of clocks of the whole network is achieved.

The invention belongs to but is not limited to the technical field of industrial automatic detection, and discloses a rotation detection system and method based on multi-station cooperative control, and the system comprises four groups of vertical rotating shafts, a double-mechanical-arm carrying mechanism, four groups of special detection units, and a control unit. The control unit is internally provided with a PID + fuzzy self-adaptive composite synchronization algorithm, a dynamic priority time sequence switching strategy, image fusion logic for abnormity elimination and abnormity processing logic. Initialized configuration and original point regression, station task allocation, multi-mechanism synchronous transfer and image acquisition, multi-angle image fusion processing, cyclic detection and exception processing realize full-process automation. The method can improve the detection efficiency, reduces the defect missed judgment rate, is adaptive to multi-specification products, supports parameterized configuration, is adaptive to multi-specification precision components, is rapid in fault tracing, and is suitable for batch detection scenes of lens cones and the like.

This invention discloses an amplitude and phase consistency calibration system for a high-power combining system, comprising multiple transmit link modules, a power combiner, a main controller, and a host computer. It also discloses a calibration method for amplitude and phase consistency in a high-power combining system. This method sets the voltage standing wave ratio (VSWR) and reflected power of each input port as mandatory safety constraints and embeds them into the optimization algorithm. A calibration strategy is adopted that increases progressively from low power to high power, prioritizing the adjustment of the phase of the channel with the highest reflected power, and finally performing amplitude fine-tuning. This invention is applicable to the high-power radio frequency field, overcoming the major drawbacks of traditional unconstrained phase synchronization algorithms that easily lead to excessive reflected power and damage to core components in multi-channel power combining. While ensuring absolute system safety, it achieves efficient and reliable amplitude and phase calibration in high-channel, high-power combining systems, significantly improving the system's engineering feasibility and reliability.

A receiving method of a wireless signal performed by a wireless signal reception device includes: receiving the pilot signal and the velocity of the UAV by the antenna; performing a ground downlink signal reception and synchronization algorithm, including steps as follows: according to the position of the UAV, the position of the antenna and the transmission direction of the pilot signal, calculating an AoA; according to the frequency of the pilot signal, the velocity of the UAV and the AoA, calculating a doppler frequency shift; according to the doppler frequency shift, adjusting the frequency of the pilot signal; according to the preset time point corresponding to the pilot signal, adjusting the present time point of the pilot signal in a data symbol; according to the adjusted present time point, adjusting the sampling time point of the pilot signal. By the foregoing method, the doppler frequency shift is modified.

The invention provides an automatic synchronization algorithm and system for a bypass switch of a power conversion device. The automatic synchronization algorithm comprises the following steps: S1, acquiring position states of a main loop switch and the bypass switch in real time; s2, selecting a corresponding synchronous operation process according to the position states of the main loop switch and the bypass switch; s3, according to the selected synchronous operation process, controlling a bypass switch to execute a switching action; and S4, after the switching action is executed, judging whether the bypass switch is synchronized with the main loop switch, if so, completing the operation, and if not, triggering an alarm. The operation process of the bypass switch is simplified, misoperation possibly occurring in the manual operation process is effectively avoided, and safety risks caused by misoperation are eliminated.

A synchronization system for synchronization of at least one physical element and at least one digital element of an analog / digital instrument of a vehicle is described, which envisages: a first driving sub-system, for driving the digital element and including a first digital processing unit operatively coupled to the digital element; a second driving sub-system, for driving the physical element and including a second digital processing unit operatively coupled to the physical element. The first and second digital processing units of the first and second driving sub-systems implement a synchronization algorithm to determine a synchronism between an operation of the first driving sub-system and a corresponding operation of the second driving sub-system, said synchronization algorithm including operations that are independent of the use of a common reference clock and are based on a set of predefined signals exchanged between the first and second digital processing units.

The invention provides an industrial equipment intelligent management method and system based on cloud edge collaboration. The method comprises the following steps: constructing a three-level collaborative architecture of a center end, an edge end and an equipment end, and establishing a two-way communication channel through a proxy tunnel mode; and the center end generates edge end instance configuration based on the equipment template metadata, and the edge end returns equipment state change data in real time by adopting an increment synchronization algorithm, only synchronizes the variable quantity and adopts priority queue management. The system comprises a center end module, an edge end module, an equipment end module, a communication module, a rule engine module and a side AI analysis module. According to the method, the problems of data synchronization delay, bandwidth waste and decision response lag are effectively solved, million-level equipment state millisecond-level consistency synchronization and intelligent closed-loop control are realized, and the industrial equipment management efficiency and the intelligent level are improved.

The invention describes a synchronization system (30) for synchronizing at least one physical element (12) and at least one digital element (13) of an analog / digital instrument (30) of a vehicle (1), comprising: a first drive subsystem (32) for driving the digital element (13) and comprising a first digital processing unit (32a) operably coupled to the digital element (13); a second drive subsystem (34) for driving the physical element (12) and comprising a second digital processing unit (34a) operably coupled to the physical element (12). A first digital processing unit (32a) of the first drive subsystem (32) and a second digital processing unit (34a) of the second drive subsystem (34) implement a synchronization algorithm to determine synchronization between operation of the first drive subsystem (32) and corresponding operation of the second drive subsystem (34), the synchronization algorithm includes operations independent of the use of the common reference clock and based on a set of predetermined signals exchanged between the first and second digital processing units (32a, 34a).

The invention discloses a real-time synchronous management method and system for building-selling distributed house resources based on cloud edge fusion computing, and belongs to the technical field of edge computing, and the method specifically comprises the steps: constructing a local data copy for each house resource based on a building-selling total system cloud; based on the local data copy, acquiring a housing resource operation, packaging the housing resource operation into a structured event object, calculating a two-dimensional priority vector and adding the two-dimensional priority vector to the event object, and acquiring a synchronous event with a mark; based on the synchronous event with the mark, executing an edge and cloud double-track mechanism in parallel, and finally generating a scheduling instruction; and issuing a finally generated scheduling instruction to execute data synchronization, and constructing a lightweight analysis mechanism to provide scheduling suggestions. According to the invention, by introducing a bidirectional quantization priority synchronization algorithm and an idle-hotspot edge triggering mechanism, real-time synchronization and cross-node dynamic scheduling of house resource states are realized, and the sales efficiency and customer experience are improved.

The application discloses a carrier phase synchronization method in distributed coherent communication, comprising the following steps: n transmitters independently generate initial values of carrier phase correction values randomly; each transmitter independently generates a phase disturbance value within a certain value range, generates two symbols after correcting a local carrier phase with the carrier phase correction value, adds a phase disturbance to one of the two symbols, and simultaneously transmits the two symbols; a sum signal of the n transmitter signals is received by a receiver, average power of the two symbols corresponding to the sum signal is calculated respectively, and the average power values are fed back to the transmitters; the transmitters calculate correction amounts reflecting the change trend of the average power, multiply the correction amounts by a step factor to obtain adjustment amounts of the phase correction values, and update the local phase correction values. The application improves the convergence speed of the carrier phase synchronization, greatly saves the synchronization time, has good convergence stability and convergence precision, and greatly improves the synchronization effect compared with traditional synchronization algorithms.

The application discloses a signal processing method of power carrier communication based on OFDM modulation, relates to the technical field of power carrier communication, and comprises the following steps: S1, cyclic prefix and guard interval design and insertion; S2, improved synchronization algorithm for frequency offset processing; S3, noise suppression optimization of a front-end signal processing module; S4, parallel processing architecture design and task allocation; S5, channel estimation at a receiving end; S6, frequency domain equalization processing; S7, OFDM demodulation processing; and S8, symbol synchronization and data recovery. Through the steps S1 and S2, the effects of effectively resisting power line channel multipath delay, reducing inter-symbol interference and inter-carrier interference are achieved. Through the steps S3, S5 and S6, the effects of accurately identifying power line impulse noise and Gaussian noise characteristics and dynamically suppressing noise are achieved. Through the steps S4 and S8, the effects of improving signal processing efficiency by using a parallel processing architecture and avoiding processor overload are achieved, and meanwhile, the data error correction capability is enhanced by convolution coding or Turbo coding, so that the real-time performance and reliability of high-speed data transmission are ensured.

Systems and methods for synchronizing with and decoding radio frequency signals are provided. In one aspect, a radio receiver includes an antenna configured to receive a radio frequency signal and digital signal processing circuitry configured to receive the radio frequency signal from the antenna and perform a first synchronization algorithm and a second synchronization algorithm on the radio frequency signal in parallel. The digital signal processing circuitry is further configured to determine which of the first synchronization algorithm and the second synchronization algorithm completes first and begin playback on the radio frequency signal based on synchronization with the radio frequency signal based on the determination of which of the first synchronization algorithm and the second synchronization algorithm completed first.

The invention discloses a signal transmission and synchronous control method and system of a portable computer, and relates to the technical field of collaborative operation of the portable computer, the stability of a current channel is evaluated through a self-adaptive switching algorithm, and when the stability is lower than a threshold value, the current channel is scanned and switched to an optimal standby channel to realize seamless signal transmission; meanwhile, timestamps of a plurality of portable computers are calibrated by using a clock synchronization algorithm, so that high-precision time consistency is ensured; on the basis, task execution plans are optimized, coordination instructions are distributed, deviation is compared through feedback data, and overall coordination and reliability are improved. Through a fusion mechanism of signal switching, time synchronization and task optimization, the problems of interference and deviation in a high-risk operation scene are effectively solved, stable, accurate and efficient cooperative work of a plurality of portable computers is finally realized, and the reliability and adaptability of the system in a complex environment are remarkably enhanced.

The invention belongs to the technical field of electric digital data processing, and particularly discloses a substation regional collaborative anti-error method and system based on multi-source information, and the method comprises the steps: obtaining process data and state information from an operation order system and a real-time equipment sensor, aligning timestamps of the process data and the state information through a time synchronization algorithm to obtain fusion data under a unified time reference; according to the forced constraint and mutual exclusion constraint relationship between the fusion data extraction devices, determining the constraint type and dependency sequence of the forced constraint and mutual exclusion constraint relationship by adopting an association rule mining algorithm, and obtaining an initial structure of a link network; for a precondition in the initial structure, if it is judged that the state collection frequency is higher than a preset threshold value, a timestamp missing part is filled with an interpolation method; the invention aims to solve the problems of asynchronous equipment state and flow data time, complex constraint relation and delayed real-time interaction response in an industrial scene.

The invention provides parallel adaptive pre-synchronization equipment, which comprises a parallel pre-synchronization module and a feedforward timing synchronization module, and is characterized in that the parallel pre-synchronization module comprises a control calculation unit, a power calculation unit, a decision unit, a signal output unit and a cache; calculating input signals are separated from the multi-path parallel signals according to the decision parameters, and the multi-path parallel signals are stored in a cache; signal power and sampling point position information are obtained through calculation according to the calculation input signal; updating decision parameters according to a comparison result of the signal power and preset signal power; reading a plurality of candidate sample points from the multipath parallel signals in the cache according to the sample point position information; selecting a target sample point according to the plurality of candidate sample points through a parallel synchronization algorithm; the timing synchronization performance is effectively improved, the equipment supports a larger dynamic range, the actual use requirement is better met, and the hardware resource consumption can be reduced.

The invention relates to the technical field of power electronics and communication, in particular to a DC-AC converter energy and signal simultaneous transmission method based on direct-axis component demodulation, which comprises the following specific steps of: selecting different zero vector positions according to information code elements required to be transmitted, generating PWM (Pulse Width Modulation) carrier waves embedded with information, sampling a line voltage, inputting the line voltage into a phase-locked loop, performing Park conversion and then outputting a direct-axis component, setting passband parameters of the digital band-pass filter, extracting components of sideband harmonics on a direct axis within a switching frequency setting range and solving an absolute value to obtain an amplitude of a direct-axis component, correcting clock delay by using a synchronization algorithm, outputting a result integral value within a unit code element width, and performing zero clearing at a starting moment of a next code element; and setting a demodulation threshold according to the sampling rate and the integral output result, and comparing, judging and outputting demodulation information. By adopting the DC-AC converter energy and information simultaneous transmission method based on direct-axis component demodulation, high-bit-rate communication can be realized on the premise of low calculation complexity.

The application discloses a kind of based on multi-source data perception's gas field station safety operation intelligent management and control system, it is related to digital information transmission technical field, the present application includes edge computing gateway, with multiple perception nodes communication connection, for receiving and buffering multi-source heterogeneous perception data;Storage unit is used to store the preset feature threshold and dynamic window calculation parameter;Synchronization unit is used to extract the feature of key physical event from high-frequency perception data stream, according to feature and dynamic window calculation parameter dynamically generates time synchronization reference window, and utilizes time synchronization reference window to carry out time deviation compensation and data alignment to other perception data stream, forms space-time synchronization data unit.The present application constructs adaptive synchronization algorithm based on dynamic time window, and carries out time alignment to multi-source heterogeneous data with physical event feature as reference, can realize the accurate association of data in physical time dimension.

The present application relates to the technical field of wireless self-organizing network, in particular to a mutual synchronization neighbor discovery method of TDMA wireless self-organizing network, which realizes time synchronization of multi-hop neighbor nodes in the absence of Beidou clock synchronization signal through time slot structure, synchronization algorithm, neighbor discovery, best sector selection and network scale adjustment steps, and through the way of competing for master node, the present application ensures unique master clock of the whole network and realizes fast access of new nodes, thereby ensuring stable and reliable communication channel quality, and at the same time, the present application counts the number of actual nodes in the network and adjusts the network node scale according to the number, thus solving the shortcomings of the existing self-organizing networking method.

This invention discloses a white-box integration method for multi-source heterogeneous models based on shared memory technology. It encapsulates shared memory, clock synchronization algorithms, and data interface protocols into a shared memory FMU using the FMI protocol. This communication FMU is then imported into various simulation tools, allowing them to exchange data and thus achieve joint simulation of multi-source heterogeneous models. Compared to exporting the model to an FMU for integration, this invention allows for real-time adjustment of model parameters and observation of model output results within each software during simulation.

The invention provides a two-stage energy-saving scheduling optimization method based on a geometric adaptive recovery mechanism, which comprises the following steps of: A, initializing core parameters such as a weight vector, a neighborhood size and iteration times, and giving a problem boundary, an operation machine set and a model parameter; b, generating an initial weight vector set, and calculating a neighborhood index of each weight; c, generating an initial population; d, calculating an individual objective function value and an ideal point, and initializing an external file as a non-dominated solution set; e, constructing a resource pool, calling a weight adaptive and population synchronization algorithm to adjust a weight vector, and reconstructing a population; f, generating a new solution in each sub-problem neighborhood by differential evolution, updating an ideal point, and updating a neighborhood solution according to a scaling function value; g, constructing a local resource pool, calling a geometric matching and recovery algorithm, and rescuing non-dominated solutions with position advantages to a candidate set; h, merging the candidate set to an archive candidate set, and performing non-dominated screening; if the archive capacity is exceeded, invoking an archive updating algorithm to update the archive; i, performing periodic weight adaptive adjustment every specified algebra interval; and J, if the termination condition is not met, returning to the step F, otherwise, outputting the external archive as a final non-dominated solution set. The method has the advantages that multiple constraints of the two-stage energy-saving flexible flow shop can be met, the defects of a traditional algorithm are overcome through a weight self-adaption and solution rescue mechanism, a scheduling scheme with multi-direction parallel search and search direction self-adaption adjustment, uniform output distribution and excellent performance is achieved, and multiple feasible bases are provided for enterprise production decisions.