115 results about "Amplification factor" patented technology

The invention discloses a cooperative control system and method for multi-process processing of a PCB (Printed Circuit Board). Multi-source process data of each process is collected, a process state baseline is formed through mutual verification of redundant sensors, process drift characteristics are examined and identified based on process capability, a process reference library is constructed in a layered manner by adopting a dynamic threshold value, and a generated process deviation parameter is detected; performing correlation analysis on adjacent processes to determine a transfer coupling degree, positioning a defect transfer link through bidirectional verification combining forward tracking and reverse backtracking, and cascading and accumulating process deviation parameters along the link to form a process incidence matrix; carrying out backtracking on defect diffusion to determine a sweep range, generating process state parameters according to the sweep range, and extracting trend turning characteristics to construct a process characteristic spectrum; defect amplification factors are extracted through sensitivity decoupling, process critical nodes are identified, a regulation and control rule base is constructed, process characteristic chromatograms are integrated, and process control instructions are output, so that defect source positioning and propagation path tracking are realized.

The invention discloses a cable cabling control method based on process big data, and belongs to the technical field of cable cabling control. Comprising the following steps that S1, parameters are collected in real time and preprocessed, historical batch records are called, the tension instability and the arrangement offset trend rate are calculated, simulation coupling factors are constructed, and an optimized coefficient combination is obtained; s2, the current tension instability and the arrangement offset change rate are calculated respectively, and the adjusted take-up speed and the adjusted twisting torque are obtained; according to the method, historical batch records of cables of the same specification are called, the tension instability and the arrangement offset trend rate are calculated, a numerical optimization algorithm is adopted to iteratively search an amplification coefficient and a sensitivity coefficient, a process-oriented optimization objective function is minimized, an optimized coefficient combination is obtained, and the stability of the cable tension is improved. Therefore, self-adaptive parameter optimization based on historical data is realized, the high adaptability of a control strategy to different batches of process fluctuations is improved, and the variability of quality indexes is remarkably reduced.

The utility model relates to the technical field of satellite navigation, in particular to a satellite navigation anti-interference signal intensifier, which comprises a receiving antenna, a prefilter, a fixed amplification module and an automatic gain module which are sequentially connected, the output end of the fixed amplification module is further connected with a control module, and the control module comprises a peak value detection unit and a switch control unit. Two output ends of the switch control unit are connected with a control end of the automatic gain module, the peak detection unit is used for detecting a signal peak value, and the switch control unit controls the amplification factor of the automatic gain module based on the signal peak value output by the peak detection unit. According to the utility model, the prefilter is used for filtering interference signals, then the peak value detection unit is used for judging the magnitude of the signals, and then the switch control unit is used for selecting different resistors, so that the amplification factor of the automatic gain module is changed, the signals are enhanced, the final signals are in a proper range, subsequent signal processing is facilitated, and the practicability is higher.

The invention provides an incremental analog-to-digital converter based on passive noise shaping and a signal processing method, which can be applied to the technical field of quantization. The incremental analog-to-digital converter comprises: an input integrating circuit configured to generate a (j-1) th low-order integrated voltage according to an input signal from a signal input end; generating a kth high-order integral voltage according to an input signal; the passive amplification circuit is configured to obtain a kth gain voltage according to the kth high-order integral voltage based on a predetermined amplification coefficient; the passive noise shaping circuit is configured to perform passive integration on the kth high-order integration voltage to obtain kth passive integration voltage, and perform passive gain on the kth passive integration voltage by using the kth gain voltage to obtain kth high-order gain voltage; a quantization circuit configured to quantize the M1 low-order integral voltages in M1 periods, respectively, to generate M1 coarse quantization values; m2 high-order gain voltages are quantized in M2 periods respectively, and M2 fine quantized values are generated.

The invention discloses an implementation method of a sub-connection active STAR-RIS assisted secure communication system. A base station, a sub-connection active STAR-RIS, a legal user and an eavesdropping user are included. According to the invention, M units of STAR-RIS are grouped into L sub-arrays, and an amplifier is shared to reduce power consumption and cost; with maximization of system secrecy energy efficiency as a target, base station beam forming, STAR-RIS reflection / transmission coefficients and amplifier amplification coefficients are jointly optimized; and solving the non-convex optimization problem by adopting an efficient algorithm based on block coordinate descent. According to the invention, the hardware overhead and the system power consumption are effectively reduced through the sub-connection structure, meanwhile, the secure transmission efficiency of the system is remarkably improved through joint optimization, multiplicative fading is overcome, and an efficient and reliable solution can be provided for 6G secure communication.

The invention provides a jet pipe array missile pitching channel jet flow opening method, device and equipment and a medium. The method comprises the steps that corresponding total thrust is calculated according to pitching control torque needed by a missile; generating a plurality of spray pipe opening combinations capable of providing total thrust according to the thrust of a single spray pipe in the spray pipe array, and taking the spray pipe opening combinations as initial candidate modes; a sequential constraint rule from the middle to the two sides is applied to each nozzle opening combination in the initial candidate modes, and candidate modes conforming to the constraint rule are obtained; calculating a jet amplification factor of the candidate mode conforming to the constraint rule in the current flight state, and evaluating the influence degree of jet interference; the candidate modes with the jet amplification factors smaller than the preset minimum threshold value of the jet amplification factors and conforming to the constraint rule are removed, and the remaining candidate modes conforming to the constraint rule serve as jet opening modes, so that the problem that the control effect is poor due to poor control torque adjustability, control coupling, insufficient spray pipe utilization rate and jet interference influence is solved.

This invention discloses a near-field heat flux control device and its control method, relating to the field of near-field thermal radiation control technology. The device includes a first radiator, a second radiator, and an intermediate control layer. The intermediate control layer, disposed between the two radiators, is composed of a narrow bandgap semiconductor material. Its carrier concentration changes smoothly with temperature, and its dielectric response characteristics continuously change with temperature, driving a frequency shift in the plasma frequency. The temperature of the intermediate control layer can be adjusted to amplify or suppress the heat flux. By using a narrow bandgap semiconductor and utilizing the temperature change of carrier concentration to drive a continuous blue shift in the plasma frequency, a spectral sweep effect is induced between the two radiators. This differs from the lattice abrupt change mechanism of phase change materials. Under an idealized temperature-shifting material model, the theoretical heat flux amplification factor of the device can reach over 100. When InSb is used as the intermediate control layer and simulations are performed based on its actual material parameters, the device maintains stable amplification performance over a continuous temperature range of approximately 40K.

The invention provides a turbulent flow space statistical magnitude measuring method, which comprises the following steps of: acquiring a sampling signal for laser Doppler velocity measurement, processing, setting filtering and pre-signal amplification coefficient parameters, carrying out data enveloping and modulation, checking a calculation result, filtering again if the calculation result is unqualified after the calculation result is checked, and if the calculation result is not qualified after the calculation result is checked, judging whether the calculation result is qualified or not. If the inspection is qualified, outputting a result; determining a laser Doppler measurement volume diameter corresponding to the low-intensity steady turbulence by applying a Taylor freezing hypothesis, and performing Fourier transform by adopting a time slot auto-covariance method to draw a turbulence space kinetic energy spectrum density curve; second-order and third-order structure function curves of a turbulent space are drawn based on a convection recording method and a time slot auto-covariance method to be verified respectively, a turbulent average dissipation value is calculated according to the initial slope of a third-order structure function of the turbulent space, and then the dissipation scale is calculated according to the energy dissipation rate of fluid and the kinematic viscosity coefficient of the fluid. According to the measurement method, the measurement precision of the turbulence space is improved.

The invention discloses a high-frequency oscillation suppression method and system for a flexible direct-current power transmission system, and belongs to the field of high-frequency oscillation suppression of a power system, and the method comprises the steps: adding a Gaussian white noise signal in current control of the flexible direct-current power transmission system, and continuously observing the voltage and current of a grid-connected point of the flexible direct-current power transmission system; acquiring the amplification factor of the oscillation signal in the frequency domain and the oscillation stabilization time in the time domain, and judging the current oscillation risk; when the oscillation risk exists, a differential first controller is introduced to compensate a selected current loop feedback signal, a positive torque signal is generated, and parameters of the differential first controller are obtained based on the current oscillation risk level; and performing feedforward compensation on the generated positive torque signal to an output link of a flexible converter in the flexible direct-current power transmission system. The negative damping phenomenon caused by the control delay effect is effectively compensated, and high-frequency oscillation of the flexible direct-current power transmission system is avoided.

The invention relates to the technical field of radio communication, in particular to a radio communication system with a talkback function, which comprises an environment voice acquisition module, an induction electric signal core processing module and a signal amplification optimization module, and is characterized in that the environment voice acquisition module acquires environment voice and converts the environment voice into an induction electric signal; the induction electric signal core processing module defines induction electric signals with the same sampling interval as induction time sequence signals; judging a noise electric signal and a current analog electric signal in the induction time sequence signal; setting a plurality of tap numbers and corresponding tap coefficients, and sequentially adopting different tap numbers to reduce the noise of the current analog electric signal and output a filtering signal; setting a constraint condition to minimize an error signal, and analyzing an optimal tap number and a corresponding tap coefficient; the signal amplification optimization module receives the optimal number of taps in the induction electric signal core processing module, dynamically sets different voice feature amplification times according to the optimal number of taps, and amplifies the current analog electric signal.

The application discloses a kind of double-layer multileaf collimator leaf amplification factor adjustment methods, comprising: the grating blade stroke is segmented according to preset interval;Respectively, the upper grating and the lower grating are independently calibrated, the equal center plane field width of each segmented point is measured, and the amplification factor is calculated;For the segmented point that cannot be directly measured, segmented linear interpolation is used to complete;Amplification factor is written into control system and the whole stroke accuracy is verified through multi-field strip field.The application fits the nonlinear characteristics of single-focusing grating amplification factor by segmented measurement, adapts to the difference of double-layer structure by independent calibration of upper and lower layers, realizes full-stroke coverage by interpolation completion, and finally improves the positioning accuracy of field boundary, significantly improves the accuracy and safety of radiotherapy.

The signal dynamic gain control system provided by this invention constructs an adaptive gain adjustment path through a first operational amplifier circuit and a feedback control circuit. This allows for real-time adjustment of the pre-amplification factor based on the signal strength at the front end of the analog-to-digital converter, avoiding signal overload caused by fixed gain and improving the system's adaptability to dynamic audio input. Furthermore, a comparison circuit composed of a voltage comparator and a programmable reference voltage source enables real-time judgment of high and low level logic signals, facilitating the construction of a control feedback link with a response time in the microsecond range and enhancing the system's protection sensitivity.

The invention relates to the technical field of computer vision and video processing, in particular to a video motion amplification method based on a cyclic generative adversarial network, which comprises the following steps: inputting a reference frame, a query frame and a motion amplification factor into a trained video motion amplification model for motion amplification; during training, an amplification frame is constructed and generated through the motion amplification module; constructing and generating a reference frame through a motion reduction module; discriminating the difference between the generated amplified frame and the corresponding real amplified frame through a first discriminator; discriminating the difference between the generated reference frame and the corresponding reference frame through a second discriminator; and a fusion loss calculation module calculates fusion loss and optimizes network parameters by combining the difference between the generated amplified frame and the corresponding real amplified frame and the difference between the generated reference frame and the corresponding reference frame according to the discrimination results of the first discriminator and the second discriminator. According to the method, high fidelity and high robustness can be realized in various complex scenes, and video motion amplification of artifacts can be effectively inhibited.

The invention relates to a fault positioning method and device for a low-voltage distribution line, computer equipment, a readable storage medium and a program product, and relates to the technical field of power fault detection. According to the invention, the fault positioning precision of the low-voltage distribution line can be improved. The method comprises the following steps: generating a fusion transmitting signal according to PN sequences of a TDR pulse signal and an SSTDR step signal; acquiring a fusion echo signal corresponding to the fusion emission signal, and performing multi-stage noise reduction processing and signal enhancement processing on the fusion echo signal to obtain a preprocessed target fusion echo signal; performing correlation operation on each sampling branch according to the candidate return band of each sampling branch to obtain a correlation peak value corresponding to each sampling branch, and identifying a fault branch in each sampling branch according to the correlation peak value; and determining a net echo on the fault branch according to the turn-back template and the optimal amplification coefficient corresponding to the turn-back template, determining a target rising edge according to the net echo, and mapping the target rising edge as a fault distance on the fault branch.

The invention relates to a transistor structure preparation method, apparatus and device, and a medium. The method comprises the steps of obtaining process node parameters of a transistor structure and a corresponding gate oxide layer thickness adjustment model; determining the target gate oxide layer thickness of the transistor structure according to the target beta value of the transistor structure and the incidence relation between the gate oxide layer thickness and the transistor current amplification factor beta value; according to the target gate oxide layer thickness and the incidence relation between the gate oxide layer thickness and the emitter width, determining a target emitter width value of the transistor structure; before a source region / drain region of the transistor structure is prepared, controlling a semiconductor machine to prepare a gate oxide layer of the transistor structure according to the thickness of a target gate oxide layer; and controlling the semiconductor machine to prepare an emitter region of the transistor structure according to the target emitter width value. The beta value of the prepared transistor can be precisely controlled by controlling the thickness of the gate oxide layer in a targeted manner at least according to process node parameters.

The invention relates to the technical field of grid-connected equipment impedance control, in particular to a wide-frequency-domain self-adaptive admittance control method and system considering the frequency coupling effect, and the method comprises the steps: building a wide-area admittance remodeling control loop considering the frequency coupling effect, comprising a virtual impedance control branch, a DC voltage loop control branch, a current loop forward control branch and two virtual impedance feed-forward branches. Selecting a reference virtual resistor based on a converter fundamental wave reactance coefficient, and determining a maximum variable admittance remolding adjustment coefficient and a numerical range of a reference virtual inductor through grid-connected converter GCC self-stability constraint; the variable admittance remolding adjustment coefficient is automatically adjusted based on the total harmonic distortion (THD) of the voltage component, the value of the amplification coefficient is determined based on the constraint of the maximum adjustment coefficient, and the admittance self-adaptive control of the converter is realized. And the method also has the advantages of broadband adjustment characteristic, simple admittance parameter setting, adaptive admittance adjustment and the like.

The invention discloses a digital radio frequency memory and a test method thereof, and belongs to the technical field of digital signal processing, the digital radio frequency memory is realized through an FPGA, the FPGA comprises an ADC conversion module, a storage module, an automatic gain amplification module and a DAC conversion module, and the test method comprises the following steps: receiving an analog signal input from the outside through the ADC conversion module, the analog signal is converted into a digital signal; writing the digital signal into a storage module, and performing data length conversion through the storage module; calculating an amplification coefficient of the digital signal by using an automatic gain amplification module, and amplifying the digital signal output by the ADC conversion module to the maximum power of the DAC conversion module by using the amplification coefficient; and the DAC conversion module converts the digital signal after gain amplification into an analog signal and outputs the analog signal, so as to intuitively judge whether the whole hardware link function of the digital radio frequency memory is normal or not according to the characteristics of the output analog signal.

The invention discloses a rail-to-rail input bias current compensation circuit, which is characterized in that an input pair transistor module is formed by a PNP input differential pair and an NPN input differential pair which are connected in parallel, and can be switched to work or work simultaneously in a full common-mode voltage range to adapt to different input voltage conditions; secondly, the current sensing module samples the change of the bias current to generate a sensing current, so that the change of the bias current can be dynamically monitored and compensated; the current mirror module copies the sensing current, the input geminate transistor matching module serves as a matching transistor circuit of the input geminate transistor module, and after the sensing current is reduced, the sensing current is injected into the differential input end of the rail operational amplifier through the high-impedance current mirror module. The technical problems that in an existing PNP and NPN combined compensation method, the input bias current is large, the amplification factor difference of NPN and PNP tubes in a full-temperature region is large, and in a mirror image compensation method, only linear copying can be conducted on a direct-current working point, the nonlinear component of the input bias current Ib changing along with differential mode voltage Vdm cannot be tracked, and consequently nonlinear distortion is serious are solved.

The application relates to the technical field of wave energy utilization, and discloses a floating wave energy device and a narrow-slot resonance synergistic method and system of a floating breakwater. The method comprises the following steps: performing frequency spectrum analysis on a narrow-slot wave surface sequence to obtain a narrow-slot wave energy spectrum width parameter and a narrow-slot wave surface amplification factor, and generating a surface type switching instruction according to the comparison results of the two parameters with respective preset threshold values; triggering the rotation of a WEC floater around a vertical shaft according to the surface type switching instruction, interchanging a symmetrical section and an asymmetric triangular baffle section, converting transient hydrodynamic excitation generated in the rotation process into electric energy through a power output device, and obtaining a modal conversion benefit increment; combining the modal conversion benefit increment with the difference between the wave energy conversion efficiencies before and after switching, iteratively correcting the preset threshold value, and obtaining an updated surface type switching instruction generation rule. The application realizes the continuous collaborative optimization of the wave energy conversion efficiency and the wave dissipation performance under wide-frequency changing sea conditions.

This invention discloses a rapid evaluation method for the enhancement factor of the dynamic coefficient by the high-frequency component of a strong impact load, belonging to the field of structural dynamic response analysis technology. This method performs time-frequency domain energy accumulation analysis on the strong impact load signal, extracts the concentrated frequency of load energy and its proportion in the total energy, and then, based on this, combines the dynamic amplification factor under the triangular time history assumption to quantitatively calculate the enhancement factor of the dynamic coefficient by the high-frequency component of the strong impact load. This method is further extended to arbitrary frequency components and the entire frequency band to obtain the comprehensive enhancement result of the dynamic amplification factor by the high-frequency effect of the strong impact load. Compared with traditional dynamic analysis methods based solely on idealized time history assumptions, this invention can introduce the real time-frequency characteristics of strong impact loads while maintaining computational efficiency, effectively compensating for the insufficient consideration of high-frequency excitation effects. It is applicable to rapid dynamic response evaluation in engineering fields such as aerospace structures, high-frequency components, and precision equipment.

The invention relates to the technical field of optimization control of a power system, and discloses a distributed power supply layered access optimization method considering output deviation transmission between layers, which comprises the following steps: acquiring operation data of a single-line-layer distributed power supply, and obtaining an initial deviation mode through fluctuation feature recognition; taking the initial deviation mode as input of a wiring unit layer, and predicting regional power unbalance and duration; taking the prediction result as the input of a substation layer, carrying out correlation analysis on the real-time convergence power data, and determining an amplitude amplification coefficient and a duration extension coefficient in the output deviation transmission process; the prediction result is corrected according to the transmission characteristic parameters, and the expected amplitude and the expected duration after the deviation is transmitted to the substation layer are obtained; and comparing the expected amplitude and the expected duration with the adjustment capability threshold of the adjustment resource of each level, and allocating adjustment tasks of different levels. According to the method, the optimal matching of the adjustment resources and the deviation characteristics is realized by quantizing the hierarchical transmission characteristics of the deviation.

This invention discloses a method for optimizing positioning trajectory data loss in low power mode, which is applied to a mobile terminal with single Beidou positioning function. The method includes the following steps: (1) Hardware configuration: The main control module controls the power supply of the Beidou chip and interacts with the Beidou chip through the serial port; the antenna module is configured, the antenna material selection and placement are optimized, a backup power supply is configured for the Beidou module, and the low noise amplification factor of the antenna LAN is increased. This method for optimizing positioning trajectory data loss in low power mode ensures stable power supply of the Beidou chip and sensitive antenna signal reception by optimizing antenna selection and placement, configuring backup power supply, and increasing low noise amplification factor. It reduces positioning failure and data loss caused by weak signal and power interruption, and lays the hardware foundation for continuous trajectory recording.

The present application provides a communication method and apparatus, which are capable of achieving consistency between an uplink channel and a downlink channel. The method comprises: a network device uses a first precoding matrix to respectively send a first reference signal and a second reference signal, and a terminal device uses a second precoding matrix to respectively receive the first reference signal and the second reference signal; the terminal device uses the second precoding matrix to respectively send a third reference signal and a fourth reference signal, and the network device uses the first precoding matrix to respectively receive the third reference signal and the fourth reference signal, a weight used by an element of a reflecting device when the first reference signal and the third reference signal are transmitted being the opposite of a weight used by an element of the reflecting device when the second reference signal and the fourth reference signal are transmitted; the terminal device sends, to the network device, first information comprising the first reference signal and the second reference signal received by the terminal device; and the network device sends second information to the reflecting device, the second information indicating the ratio of a first power amplification factor to a second power amplification factor.

This invention provides a method for monitoring the condition of transmission lines. The method decouples and quantifies multi-segment conduction and multi-physical quantity coupling by constructing independent inter-segment topological conduction parameter systems and intra-segment multi-physical quantity coupling parameter systems. After two-level normalization of operational monitoring data, a comprehensive degradation index and evolution trend are generated. The dynamic residual degradation barrier is obtained by weighted integration of the influence of neighboring area conduction and the local degradation rate. A collaborative amplification factor is determined based on the degree of degradation. The gradually changing base and the amplified transient impact are superimposed to form a comprehensive risk value. The ratio of this value to the residual degradation barrier is used as the risk ratio. The state type and risk quantification results are output in conjunction with neighboring area constraints. This invention solves the problem in existing technologies where it is difficult to comprehensively handle the coupling effects of multiple factors and their dynamic evolution relationships during transmission line operation, leading to insufficient accuracy and reliability in condition assessment.

The application provides a pre-processing method for reducing the peak-to-average ratio of a MIMO-OFDM signal, comprising the following steps: S1, performing constellation point pre-expansion and beamforming on a frequency domain signal X og ; S2, obtaining a time domain signal x m corresponding to the frequency domain signal X m ; S3, obtaining a peak cancellation sequence y m ; S4, calculating a peak cancellation frequency domain signal carried at a reserved subcarrier set according to the peak cancellation sequence y m , performing least square approximation on a time domain signal c m corresponding to the peak cancellation frequency domain signal to obtain an optimal amplification coefficient and obtaining a final time domain signal after peak cancellation; S5, performing one-time clipping processing on the signal, performing Fourier transform to a frequency domain, performing beamforming inverse transform on the frequency domain signal, and performing constellation correction; and S6, inputting the signal into a MIMO system to obtain a transmission signal of each antenna, and determining whether the peak-to-average ratio requirement is met to determine whether to directly transmit or iterate again. The application can greatly reduce the calculation complexity while ensuring the BER performance.

This invention discloses an electromagnetic coil winding detection system and method, belonging to the field of electromagnetic coil winding technology. It solves the problem in segmented electromagnetic coil windings of high-voltage high-frequency transformers where distributed parameter resonance and high-frequency harmonic coupling generate dynamic interlayer overvoltages, continuously inducing partial discharges, ultimately leading to winding breakdown and short circuits, and the cause of failure is difficult to trace. The system includes a data acquisition module, a data preprocessing module, a resonance feature extraction module, a parameter calculation module, a risk index calculation module, a product-level judgment module, and a batch statistical process control module. This invention collects impedance data of the electromagnetic coil at multiple frequency points and preprocesses it to extract resonance feature parameters. It then calculates the resonance amplification factor and harmonic excitation intensity by combining operating parameters, and further integrates the quality factor and frequency matching degree to generate a comprehensive risk index. Based on this index, the coil is graded, and batch data is statistically controlled to issue process warnings.

The application provides a weak non-stationary signal processing method and system, and relates to the technical field of signal processing, and comprises the following steps: obtaining a weak non-stationary signal; estimating the signal frequency range of the weak non-stationary signal, and estimating the noise intensity according to the estimated signal frequency range; constructing a stochastic resonance model based on a Gaussian mixed potential function, and adaptively optimizing the Gaussian mixed potential function according to the estimated noise intensity, so as to obtain an optimal stochastic resonance model, with the maximum spectral amplification factor of the stochastic resonance model as the target; constructing a parameterized demodulation operator to demodulate the weak non-stationary signal, inputting the demodulated signal into the optimal stochastic resonance model for enhancement, and finally obtaining the enhanced non-stationary signal through inverse demodulation; and the application is based on Gaussian mixed potential function stochastic resonance, and solves the bottleneck problem of weak non-stationary signal processing through a closed-loop process of noise intensity estimation, potential function optimization, frequency estimation and signal enhancement.

The invention discloses a wind hydrogen storage collaborative digital real-time management and control platform and method, and relates to the technical field of power grids, and the platform comprises a time calculation module which calculates the structure propagation time based on the effective length of a blind branch pipe; the segmentation module is used for obtaining a plurality of continuous time periods based on the structure propagation time; an amplification module that calculates a first statistical value based on the continuous time period, and calculates a structure amplification factor based on the first statistical value; the coupling module is used for defining a tank opening pipe section and calculating the three-way parallel coupling amount according to the tank opening pressure time sequence and the structure amplification factor of the tank opening pipe section; and the correction module obtains a corrected hydrogen production power adjustment amount according to the three-way parallel coupling amount. According to the invention, invalid charging and discharging times of the energy storage system can be effectively reduced, and grid-connected power fluctuation amplitude is reduced.

The application belongs to the technical field of signal processing and industrial monitoring, and particularly relates to a multi-source heterogeneous signal fusion acquisition method based on timestamp alignment, which comprises the following steps: S1, obtaining high-speed service signals and low-speed state signals of a system to be monitored, performing up-sampling processing on the low-speed state signals, aligning the time resolution of the low-speed state signals with the characteristic window step of the high-speed service signals, and obtaining a time-base normalized to-be-calibrated sequence; S2, calculating the local standard deviation of the high-speed service signals in a current calculation window and the first-order difference absolute value, combining a preset normalized amplification coefficient, and constructing a fluctuation energy density index reflecting the fluctuation characteristics of the signals. The application effectively prevents the misjudgment of Gaussian white noise of a sensor as a correlation signal, and can adapt to the response time drift caused by equipment aging, improve the accuracy of fault analysis from a second level to a millisecond level, and effectively solve the problems of heterogeneous signal causality inversion and fusion difficulty.

The invention belongs to the technical field of intelligent power grid terminal equipment, and particularly relates to an electric energy meter data acquisition method and system based on low-power-consumption task scheduling, and the method comprises the steps: firstly obtaining and normalizing a voltage sampling point sequence, adaptively adjusting the length of a sliding window according to data fluctuation, and outputting a normalized data sequence; traversing the sequence to calculate the physical gradient of the adjacent sampling points, introducing a weight amplification factor which is in nonlinear positive correlation with the physical gradient to construct a physical value entropy, and directionally amplifying the calculation weight of the high physical gradient data; then, a coupling evaluation logic containing an energy suppression item and a value guarantee item is constructed, a transmission decision index is calculated, and the transmission state of the communication module is controlled; and finally, counting a multi-time window decision index mean value, determining a next sampling frequency and completing a new round of acquisition. According to the method, the problem of missing detection of transient faults of the power grid is solved, and the cruising ability of equipment is effectively improved on the premise of guaranteeing zero loss of key fault data.