309 results about "Pulse number" patented technology

The invention discloses a transformer equipment state real-time monitoring method and system based on multi-source data fusion, and particularly relates to the technical field of transformer equipment state monitoring, and the method comprises the steps: firstly obtaining a unified time reference through the multi-channel time alignment driven by an event anchor point, and employing a strategy of combining rough alignment with refined alignment; on the basis, the channel alignment confidence coefficient is constructed according to the main peak sharpness ratio, the group delay consistency, the phase locking consistency and the geometric consistency of temperature compensation; then acoustic emission spectrum energy and pulse number, vibration impact characteristics and cross-sensor consistency characteristics are extracted under a unified time reference, and dynamic threshold setting is carried out in combination with load and environment context; performing gating weighting, intra-group decorrelation and probability calibration on the multi-source evidence according to the channel health factor to obtain calibrated fault probability and inconsistency; and finally, outputting a grading result under the constraint of multi-stage judgment and physical consistency rechecking controlled by the error discovery rate.

The invention belongs to the related technical field of laser micro-nano machining, and particularly relates to a 2.5 D micro-pattern laser machining method based on an acousto-optic deflector and a galvanometer, which is realized by adopting a laser device based on combination of an acousto-optic deflection module and the galvanometer, and comprises the following steps: in single track scanning of the galvanometer, according to a preset pulse machining sequence corresponding to a machined pattern, carrying out laser processing on the machined pattern according to a preset pulse processing sequence corresponding to the machined pattern; frequency control signals corresponding to the pulses are input into the two acousto-optic deflectors respectively, so that laser pulse distribution formed on the machined part after single-time track scanning of the galvanometer is shown as the pulse superposition number in the depth direction and the lap joint rate between adjacent pulses in the normal direction of the advancing direction of the galvanometer; the pulse superposition number of each pulse position in the depth direction reflects the processing depth of the pulse position, and the pulse number and the pulse overlap rate of each positioning position in the normal direction of the moving direction of the galvanometer are determined according to the section width and the contour radian in the width direction of a processing graph. According to the invention, the processing of any 2.5 D micro-pattern can be realized.

The invention provides a single-line communication method and device based on pulse counting, electronic equipment and a medium, and relates to the technical field of switches and servers. The method is executed by a main board in a system, the main board is connected with a sub-board through a single in-place signal line, and the method specifically comprises the following steps: within a first preset time period after the system is powered on, sending a first pulse sequence through the single in-place signal line, and verifying the connection state of a cable based on a received response signal; if the connection state is verified to be normal, sending a second pulse sequence through a single in-place signal line, and performing data communication with the daughter board; wherein the second pulse sequence forms communication bytes in a pulse number coding mode. According to the invention, an in-place signal line which is only used for static level detection traditionally is transformed into a dynamic multifunctional channel, so that the dual defects of low communication efficiency and high misplugging risk of a traditional scheme are synchronously overcome on the premise of not increasing any hardware cost and wiring complexity.

A method, apparatus, and non-transitory, computer readable medium are disclosed herein for optimizing a pressure pulse signal during ramp down operations for a hydraulic fracturing process in a wellbore. In one embodiment, a method comprises: obtaining pressure pulse data from a wellbore; calculating wave speed for the wellbore; and determining a rate change schedule for use during a ramp down procedure based on the wave speed.

The invention relates to the technical field of integrated circuit packaging, solves the problem that a calibration process in the prior art lacks a stable displacement reference consistent with actual movement of equipment, and provides an integrated circuit visual positioning calibration method based on a pulse displacement reference and a medium. The method comprises the following steps: controlling a motion platform to move along a first direction and a second direction from a preset starting point according to a preset pulse number, and obtaining a calibration data set; acquiring pulse deviation data and pixel change data according to the calibration data set; according to the pulse deviation data and the pixel change data, obtaining a rotation deviation angle between the motion coordinate system and the imaging coordinate system; and when a target chip comprising an integrated circuit is subjected to die bonding, compensating a conversion relation between an imaging coordinate system and a motion coordinate system according to the rotation deviation angle. According to the invention, pulse displacement is introduced as a unified calibration reference, and the reliability of a visual positioning result in an integrated circuit die bonding process is improved.

The invention relates to the technical field of error correction, in particular to a motor driving precision correction method and system based on force feedback data, and the method comprises the following steps: obtaining a force feedback and pulse number calculation growth rate peak value definition early warning threshold value, extracting multi-speed frequency domain amplitude, screening characteristic frequency bands, and constructing a mapping table; in the initial driving stage, abnormity is judged, a prospective correction torque is generated, frequency domain characteristics are extracted, energy is calculated, a mapping table is called for interpolation correction, and prospective and dynamic correction torque is superposed to adjust a current instruction. According to the invention, through combination of a force feedback sensor and frequency domain feature extraction, construction of a force feedback growth rate peak early warning threshold value, screening of a dynamic error feature frequency band, prospective identification of an abnormal state, error compensation according to frequency band energy and steady-state average force feedback mapping, and dual-path linkage, prospective correction and dynamic adjustment are completed. Frequency domain compensation inhibits transient control drift, precision is kept under multiple loads, the abnormal response and correction efficiency without hardware intervention is improved, and stability and continuity of system control are guaranteed.

The invention discloses a multi-parameter fusion non-intrusive partial discharge on-line monitoring method and system. Six types of sensors are arranged on the outer wall of each switch cabinet in a non-intrusive mode; according to six-channel partial discharge pulse data corresponding to the switch cabinet, establishing a two-dimensional phase difference confidence ellipse, and reserving pulse data falling into the two-dimensional phase difference confidence ellipse as a homologous event; dividing a set interval in the Noise channel into a plurality of sub-bands; constructing a temperature and humidity-noise gain matrix in each sub-band in real time, and performing reverse compensation on the frequency spectrum in the homologous event; constructing a six-dimensional vector for the compensated frequency spectrum, sending the six-dimensional vector to a Light CNN (Convolutional Neural Network) in the edge device, and outputting an initial discharge probability; correcting the initial discharge probability to obtain a final discharge probability; and based on the final discharge probability, carrying out risk grading on the partial discharge event in combination with edge calculation, and giving an alarm according to a risk grading result. According to the method, the partial discharge identification accuracy can be remarkably improved, and all-weather and full-life-cycle monitoring in a real sense is realized.

The invention provides a current transformer saturation detection method and system, and relates to the technical field of state detection and fault diagnosis of current transformers, and the method comprises the steps: synchronously collecting the secondary side current, bus voltage, cable insulation and partial discharge data of a current transformer, and carrying out the normalization according to classes, and then completing the time sequence alignment; secondly, a fixed sliding window is set, current distortion rate, voltage over-limit frequency, insulation parameter mean value and partial discharge pulse quantity characteristics are extracted, and whether current transformer saturation, insulation abnormity and partial discharge abnormity events exist in the window or not is judged according to the current distortion rate, the voltage over-limit frequency, the insulation parameter mean value and the partial discharge pulse quantity characteristics; counting the saturation probability under each node state based on a Bayesian causal network, calculating and normalizing the causal contribution degree of the insulation abnormity and the partial discharge abnormity to the saturation event, and determining a dominant influence factor; and finally, a health index is calculated in combination with the normalized contribution degree and the abnormal state, the running health condition of the current transformer is evaluated through trend analysis in combination with a dominant factor, saturation inducements are positioned, and misjudgment is avoided.

The invention discloses a laser radar analog front-end circuit with strong environmental adaptability, and solves the problem that change noise is difficult to filter in a correlation detection method in the prior art. The circuit comprises a synchronous clock active quenching reset circuit which outputs SPAD pulse signals; the time window configuration circuit generates a window signal with adjustable pulse width; the analog domain intensity integral circuit outputs analog integral voltage changing along with the SPAD pulse number within the period of validity of the window signal; the sampling holding and inter-frame reset circuit samples as a reference voltage and resets the integral circuit after the window is ended; the correlation detection logic circuit compares the analog integral voltage with the reference voltage within the period of validity of the window signal, and outputs a trigger signal when the analog integral voltage exceeds the reference voltage; by integrating the light intensity in real time and adaptively updating the threshold value, only effective target echoes are triggered in a complex light environment, the resource overhead and power consumption are reduced, and the system environment adaptability and the ranging reliability are improved.

The invention discloses a high-precision self-timekeeping method based on an FPGA, and relates to the technical field of high-precision time synchronization, and the method comprises the steps: providing a 10MHz system clock through a constant-temperature active crystal oscillator, carrying out the up-sampling of the clock frequency to 200MHz through a phase-locked loop frequency multiplication algorithm, and carrying out the up-sampling of the clock frequency to 200MHz; performing time synchronization on the system by using reliable time data and effective pulse per second signals provided by a satellite module, screening and selecting reference pulse per second, recording reference pulse per second data of at least 30 minutes, monitoring a rising edge of the pulse per second based on a sampling rate of 200MHz, and storing a maximum value of a counter per second to an RAM (Random Access Memory); the high-precision self-timekeeping method based on the FPGA not only can cope with complex environmental conditions, but also can ensure that stable synchronization performance is kept under long-time operation, so that the strict requirement of a modern high-precision time synchronization system on clock precision is met.

A layered pulse generator for a vertical-cavity surface-emitting laser (“VCSEL”) driver is disclosed consisting of three elements: a low-speed pulse generator, a high-speed pulse generator, and a pulse generator selector, all of which are on-chip with the VCSEL driver. By providing these elements on-chip, overall system power and complexity are reduced while allowing for significantly higher pulse train frequencies compared with known systems. The high-speed pulse generator is capable of generating pulses faster and with higher resolution than that of the low-speed pulse generator. The high-speed pulse generator uses multiple clock outputs, phase shifted, and synthesized into a single pulse waveform capable of wide-ranging frequencies, duty cycles and pulse counts.

The present application relates to laser processing simulation method, specifically relates to a kind of single line scribing simulation method and multi-line scanning simulation method based on section lofting, for solving the problem that the calculation efficiency of existing pulse laser ablation simulation model is limited, simulation calculation time is still longer.The single line scribing simulation method based on section lofting provided by the present application, processing track is decomposed into stable section and unstable section, a small amount of key point pulse is obtained by discrete sampling on stable section, and the ablation section line of all key point pulse is calculated and obtained;The ablation section line of lofting key point pulse is obtained, the ablation surface of stable section is obtained, and then its ablation topography is obtained;The single line scribing simulation method based on section lofting of the present application, since only the ablation section line of a small amount of key point pulse is calculated, and lofting time is unrelated to pulse number, the calculation efficiency of workpiece ablation topography is greatly improved, and the more the total number of pulse, the higher the calculation efficiency is improved.

The invention discloses a magnetic stimulation signal output method and device of magnetic stimulation equipment, a magnetic stimulation system and a computer readable storage medium, and the method comprises the steps: receiving a magnetic pulse output instruction, and at least obtaining a standard curve, a magnetic pulse output mode and a pulse set value according to the magnetic pulse output instruction; sampling the standard curve according to set sampling times to obtain sampling data; according to a magnetic pulse output mode, multiplying the pulse set value by each piece of sampling data to obtain pulse data of each magnetic pulse in the string magnetic pulse signal; wherein the pulse data is pulse frequency and / or pulse amplitude; and outputting each magnetic pulse of the string magnetic pulse signal according to the pulse data. According to the technical scheme, flexible and diversified change adjustment of the magnetic pulse signal can be realized, the problem of adaptive fatigue of human muscles and the like is effectively avoided, and the physiotherapy effect of the magnetic stimulation equipment is ensured.

The application discloses a kind of electroencephalogram emotion recognition methods based on pulse convolutional neural network.The present application is after the preprocessing of electroencephalogram emotion data, it extracts differential entropy feature and time window intercept, then it is encoded using pulse convolutional encoder;Pulse convolution feature extractor extracts pulse data features;Pulse fully connected classifier learns and classifies.The present application directly trains the pulse neural network by fusing the pulse convolution layer and the pulse fully connected layer, achieves the purpose of electroencephalogram emotion classification, and transmits pulses between layers and time slices in the network during the training process through the pulse convolution layer, extracts the space-time information in electroencephalogram data, and then classifies emotions through the feature learning of the pulse fully connected layer.The present application combines the existing traditional neural network with the pulse neuron by using the characteristics of pulse neural network, improves the performance and generalization ability of the model, and realizes good emotion recognition effect and smaller model size.

The application discloses a kind of subarray level timing round-robin high duty cycle wide coverage pulse waveform design methods, belong to radar detection technical field.The application uses subarray level timing round-robin transmission to improve pulse waveform duty cycle, on the basis of this, through the joint optimization design long-short pulse width, number of coherent pulses, subarray timing round-robin transmission cycle number, the detection range of wide coverage pulse waveform is realized.Problems, such as the degradation of detection power caused by the limitation of ERP when the pulse array radar transmits wide coverage beamforming.

The invention relates to a data processing method and device, electronic equipment, a storage medium and a program product. The method comprises the steps that under the condition that a page is in an open state, a pulse signal used for determining time length data is reported in response to the fact that a collection condition corresponding to the time length data is met, and the time length data is used for representing the user participation degree of the page. Therefore, by reporting the pulse data, the participation degree of the user on the page can be measured more simply and accurately, accurate determination of the time length data is realized, the possibility of missing report and false report is effectively reduced, and a solid data support is provided for subsequent business decision. Moreover, the data processing method provided by the invention can be suitable for various front-end frames, most industries and most Web development scenes, and has wide universality.

The invention relates to the technical field of industrial control, in particular to a configuration method for taking a servo drive as an external encoder, which comprises the following steps: taking a first control unit as an external encoder and configuring the external encoder as an absolute value mode, taking a second control unit as a main drive unit and setting the external encoder as a full-closed-loop control mode, and converting absolute position data of a first motor into absolute position data of a second motor; the signal is converted into an incremental pulse signal, and the pulse signal is used as feedback data to be transmitted to a second servo driver for full-closed-loop position correction; recording the pulse number of the second motor and the feedback pulse number of the first control unit, calculating an electronic gear ratio, and writing the electronic gear ratio into a second servo driver; an excitation signal is injected into the second servo driver through the upper computer, response data of the second motor and the load end are recorded, gain parameters are calculated and adjusted based on the dynamic characteristics of the mechanical transmission chain of the load end, and the gain parameters are written into the second servo driver. Servo serves as an encoder, and absolute value full closed loop is achieved.

The application provides an electronic watch running time precision regulation system, and relates to the technical field of data processing.The system is used for collecting temperature values, voltage values and cumulative running time, counting the number of pulses output by a crystal oscillator in a unit time, obtaining state data and basic frequency data, calculating frequency offset values in different periods, performing window sliding, calculating drift trend values in different windows, calculating the difference between different states between adjacent periods, obtaining state change values, combining and analyzing the state change values with a frequency drift trend sequence, obtaining a state response coefficient set, identifying effective disturbance components in state change vectors of different periods, calculating pulse compensation values in different periods, obtaining pulse compensation data, correcting timing pulses, obtaining a pulse output sequence, and updating the time of the electronic watch according to the pulse output sequence.The application can regulate the pulse signal of the electronic watch and ensure the precision of running time.

The invention relates to a partial discharge signal identification method, device and equipment, a medium and a program product. The method comprises the following steps: acquiring original partial discharge pulse data of to-be-detected equipment; inputting the original partial discharge pulse data into a pre-trained partial discharge signal enhancement model to obtain enhanced partial discharge pulse data; matching the enhanced partial discharge pulse data with a standard pulse signal to obtain candidate partial discharge pulse data; acquiring response feature information of the to-be-detected equipment; and inputting the candidate partial discharge pulse data and the response feature information into a partial discharge identification model, respectively executing feature extraction to obtain a to-be-detected partial discharge pulse feature and a response distribution feature, and obtaining a target response identification result of the to-be-detected device based on the to-be-detected partial discharge pulse feature and the response distribution feature. By adopting the method, multi-dimensional features such as a topological structure and an operation state of the equipment can be fused, the identification accuracy is high, and the anti-interference capability is strong.

This application discloses a threshold adjustment method, apparatus, device, and medium based on partial discharge data, relating to the field of partial discharge detection technology. The method includes: acquiring the current spectrum type; setting a first adjustment threshold based on the current spectrum type; acquiring effective pulse data and the corresponding number of phase windows based on the first adjustment threshold; calculating the phase window ratio based on the number of phase windows corresponding to the data; if the phase window ratio exceeds a first ratio threshold, clustering the data to obtain a DBI index; if the DBI index is less than a first index and the number of cluster centers is less than or equal to the first threshold, performing an FFT transformation on the data to obtain the frequency point with the highest energy and calculating the energy ratio of that frequency point; if the energy of that frequency point is not within a first range and the energy ratio is less than or equal to a second ratio threshold, adjusting the first adjustment threshold to obtain a second adjustment threshold. This method effectively improves the detection accuracy of partial discharge data.

The application discloses a cam control method and device, equipment and medium, and relates to the field of mechanical automation control. The method is applied to an FPGA, and comprises the following steps: extracting a target parameter for representing the length of a target segment sub-path from a cam table, and updating a first counter for counting the displacement of a main shaft and a second counter for counting the displacement of a slave shaft; determining the target pulse number required to be output by the slave shaft by using the counting ratio relationship between the current two counters; if the main shaft has pulse input, updating the first counter, controlling the slave shaft to output the target pulse number of pulses, and updating the second counter; judging whether the pulse processing for the target parameter is completed based on the current counting of the two counters; if not, jumping to the step of determining the target pulse number required to be output by the slave shaft by using the counting ratio relationship between the current first counter and the current second counter. The application can reduce the resource consumption of the FPGA, and enable the slave shaft to quickly respond to the input of the main shaft.

The application discloses a timing generation method, system, device and storage medium of an analog-to-digital converter, wherein the method comprises the following steps: acquiring a sampling data timing of an ADC; configuring a first comparison register value of a timer according to the sampling data timing of the ADC, and outputting a corresponding CNV signal in the sampling data timing of the ADC; and a conversion completion signal of the CNV signal triggers a DMA to adjust a second comparison register value of the timer, and output a corresponding sampling clock pulse in the sampling data timing of the ADC. The timing generation method, system, device and storage medium of the analog-to-digital converter provided by the application utilize the DMA and the timer of an MCU, realize automatic interaction between the DMA and the timer through parameter configuration, and automatically realize output of any clock pulse number by hardware without deep participation of the MCU, so that the application is simple, efficient, low in cost and high in operation efficiency.

A photodetection device according to the present disclosure includes a plurality of light-receiving sections that each generates a pulse signal including a pulse corresponding to a result of light reception, a plurality of edge detectors that each generates a detection signal by detecting an edge of the pulse in the pulse signal generated by a corresponding light-receiving section, and an adder that generates a detection value indicating number of the pulses on the basis of a plurality of the detection signals. The edge detectors each include a first latch circuit that generates a first signal by latching the pulse signal on the basis of a first clock signal, a second latch circuit that generates a second signal by latching the first signal on the basis of a second clock signal that is an inverted signal of the first clock signal, a combination circuit that generates a third signal on the basis of the pulse signal, the first signal, and the second signal, and a third latch circuit that generates the detection signal by latching the third signal on the basis of the first clock signal.

This invention relates to the field of AC servo system technology, specifically to an FPGA-based method and system for frequency division output of position feedback pulses from an AC servo serial communication encoder. The method includes the following steps: periodically reading encoder position feedback data and calculating the difference between the position feedback data read in the current cycle and the position feedback data read in the previous cycle; converting the difference in position feedback data into a uniformly distributed pulse signal PCLK within the encoder position feedback data sampling period; using the pulse signal PCLK as a trigger clock to perform DDA calculation on the required number of output pulses per revolution, changing the state of the quadrature output pulses each time an overflow occurs, thereby generating frequency-divided quadrature pulse signals A and B. This invention provides an FPGA-based method for frequency division output of position feedback pulses from an AC servo serial communication encoder, which can realize frequency division output of serial communication encoder position feedback pulses according to the requirements of a host device.

The invention relates to the technical field of industrial data analysis, and discloses an original data feature analysis system in water meter detection, comprising: a pulse data aggregation unit for acquiring an original pulse time sequence; the time sequence difference processing unit is used for receiving the original pulse time sequence and executing first-order difference operation to generate a first-order time sequence difference value sequence; the feature decoupling shunting unit is used for executing logic locking by using a monitoring carrier environment baseline scalar, and dividing a first-order time sequence difference value sequence into a steady state processing channel and a transient analysis channel; the intrinsic mode mapping unit is used for pre-storing intrinsic mode feature vectors; the transient distortion judgment unit is used for extracting the frequency domain feature vector, executing orthogonal projection mapping with the intrinsic mode feature vector and outputting an effective transient distortion tensor, the problem of feature information entropy collapse of the high-frequency pulse sequential sequence in the dimensionality reduction aggregation process is solved, and a semantic gap between an information processing domain and a physical design domain is eliminated.

The invention discloses a method for testing the service life of a high-repetition-frequency multi-pulse optical thin film, and the method comprises the steps: determining the range of the total irradiation pulse number of a damage threshold test through finding out the inflection point pulse number of which the damage threshold of a thin film element tends to be stable under high repetition frequency, and providing a basis for the acceleration of service life prediction; in the irradiation pulse number range, the relation between the damage threshold stable value and the repetition frequency is fitted, a thin film life prediction mechanism under the high repetition frequency is established, and the energy density allowed by stable operation of the element under other repetition frequencies can be obtained through calculation. The method is of great significance in improving the service life testing efficiency and accuracy of the optical element.

The application provides a synthetic aperture radar echo frame loss detection method, system, medium and equipment, which comprises the following steps: step one, inputting SAR original echo data and system working parameters; step two, calculating an echo loss detection threshold; step three, calculating a range correlation coefficient of adjacent frames of input echo at each range moment; step four, comparing the adjacent frame correlation coefficient with the detection judgment threshold to determine whether the frame is lost; and step five, outputting a pulse loss detection result. The SAR echo frame loss detection method and system based on the range correlation designed by the application are aimed at the problem of SAR echo original frame loss caused by star-ground transmission and the like, a SAR echo frame loss diagnosis mechanism based on the range correlation is given, the automatic detection of SAR echo frame loss can be realized under the condition of no echo pulse number record, and the SAR image quality is effectively ensured.

The invention discloses a speed measurement system and method for linear impact, and the system comprises a displacement detection module, a data processing module and a central processing module, and the displacement detection module is used for detecting the real-time displacement of a moving object in the process of moving towards an impact test object. The data processing module is used for determining a preset speed measurement interval according to a preset speed measurement position point and a preset speed measurement length, and generating a pulse signal and outputting the number of pulses according to the real-time displacement when the moving object is within the range of the preset speed measurement interval; the moving time of the moving object in the preset speed measurement interval is calculated, and the average speed of the moving object in the preset speed measurement interval is calculated according to the moving time and the preset speed measurement length and serves as the moving speed of the preset speed measurement position point. According to the invention, the speed of the moving object at different speed measurement points and speed measurement lengths in the moving process is detected, and the flexibility, convenience and accuracy of the impact test are improved.

The application discloses a kind of scintillator decay time test methods based on waveform sampling, the steps of test method include: scintillator is coupled to the optical window of photomultiplier tube placed in shielding box, using radioactive source excitation sample, open oscilloscope automatic acquisition not less than 100 pulse signals and transmission to control computer;Pulse waveform data acquired by oscilloscope is handled calculation, obtains the decay time constant corresponding to single pulse data;The above steps are repeated for processing all collected pulse data, obtain decay time constant set;With decay time constant set histogram, data should present normal distribution;Using Gaussian function to the normal distribution is fitted, the decay time value corresponding to the peak obtained is the decay time of the sample.The application can accurately test the decay time of different scintillating materials, especially suitable for high-throughput decay time measurement.

The present application discloses a gate drive circuit and a display panel. The gate drive circuit includes a plurality of cascaded gate drive units. Each of the gate drive units includes a stage transmission signal selection circuit, a pull-up control circuit, a pulse number reduction circuit, a first inversion circuit, a first output stage and a second output stage, and can output a second gate control signal with a greater number of pulses and a first gate control signal with a less number of pulses.