55 results about "Pulse number" patented technology

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 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 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 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 application provides a kind of method for enhancing robustness of pulse neural network based on neural activation and connection optimization, applied to artificial intelligence and neural network technical field, the method comprises: constructing pulse neural network model, the neuron of pulse neural network model adopts burst enhancement type pulse neuron, the input of pulse neural network model is image data, and the output of pulse neural network model is the image processing result corresponding to computer vision task;When the membrane potential of burst enhancement type pulse neuron exceeds the firing threshold, the part exceeding the membrane potential is converted into the pulse output within the burst window by quantization linear mapping function, and the number of pulse output is an integer between 0 and the preset maximum burst pulse number;When training pulse neural network model, add activation perception regularization term to total loss function;Through the application, the accuracy and robustness can be simultaneously improved while maintaining the high energy efficiency advantage of pulse neural network.

This invention proposes a portable photoelectric speed sensor testing method, belonging to the field of train operation control equipment testing and maintenance. It solves the problem that manual rotation methods cannot achieve quantitative testing. The method includes: setting test parameters, including wheel diameter, the number of pulses per revolution of the photoelectric speed sensor, and the target test speed; based on the test parameters, the control unit performs calculations to generate a control signal for the drive motor, simulating the rotation of the locomotive wheel axle at the target test speed; the drive motor rotates according to the control signal and is mechanically coupled to the photoelectric speed sensor via a square coupling, causing the sensor to output pulse signals; the speed value displayed on the train operation monitoring device is compared with the target test speed. If the displayed speed value is within a preset error range and matches the target test speed, the photoelectric speed sensor is considered to be functioning normally; otherwise, it is considered abnormal. It is mainly used in the field of train safety assurance.

The application provides an information bit modulation method, a demodulation method, a device and a storage medium. The application belongs to the technical field of communication. The information bit modulation method, the demodulation method, the device and the storage medium of the application comprise the following steps: a sending end modulates information bits to the number of pulses, the arrangement combination of pulse positions and pulse amplitudes, and generates corresponding modulation symbols; and the sending end transmits the modulation symbols.

The embodiment of the present application provides a kind of method, device and processor for correcting incremental encoder positioning, belong to measurement field.The method comprises: obtaining the actual quantity variation of AB phase pulse signal when compared with the last Z phase pulse signal trigger time when current Z phase pulse signal trigger time and the current pulse quantity of AB phase pulse signal when current Z phase pulse signal trigger time;According to actual quantity variation and preset quantity variation, determine the residual quantity, wherein the residual quantity is the remainder obtained after actual quantity variation is divided by preset quantity variation;According to the target preset residual quantity interval where residual quantity is located and the target preset correction strategy corresponding to target preset residual quantity interval, the current pulse quantity is corrected to obtain current actual pulse quantity;According to current actual pulse quantity, determine the actual positioning position of incremental encoder when current Z phase pulse signal trigger time.The embodiment of the present application can improve the positioning accuracy of incremental encoder.

The application discloses an antenna scanning period estimation method and device based on amplitude feature analysis. Firstly, the sliding window mean amplitude peak value is calculated, and the corresponding peak time is obtained. Then, the peak duration containing the peak time is obtained. Whether the pulse amplitude difference and the pulse number meet the first preset threshold is judged. If yes, the amplitudes corresponding to the pulses in the peak duration are set to zero. The above steps are executed. Through the main lobe query condition combined with the initial signal main lobe, multiple signal main lobes are determined. If the number of the signal main lobes is not less than the second preset threshold, the peak times of the signal main lobes are incrementally sorted to obtain a main lobe peak time sequence. The antenna scanning period is determined according to the main lobe peak time sequence. The problems that the antenna scanning period is not accurate in the prior art and the time consumption is too long in the related method are overcome, and the accurate estimation of the signal antenna scanning period is realized.

This invention discloses a method, system, device, and storage medium for online monitoring and diagnosis of partial discharge in generators. It acquires pulse signals from different parts of the generator casing and uses an adaptive bipolar pulse detection algorithm to determine the start and end points of each pulse. For each pulse, it extracts amplitude, polarity, energy, width, and phase characteristics within the power frequency cycle. Combining pulse rate and average amplitude, it executes a discharge mode classification algorithm to obtain discharge classification results. Based on the discharge severity index, it calculates the insulation fatigue increment within a single monitoring window, updates the cumulative fatigue value using a time decay model, and triggers corresponding alarm levels based on the cumulative fatigue value. It calculates the power frequency phase based on the occurrence time of each pulse, plots a scatter plot, calculates and sorts the discharge intensity based on the number of pulses, energy, and amplitude from each sensor, and generates an activity heatmap. It extracts the recent average daily fatigue increment, estimates the number of days required for the insulation fatigue value to reach the critical threshold, and generates a comprehensive diagnostic report.

Disclosed is a method for determining the operational conditions of a method for high-repetition rate femtosecond laser ablation including a first step of determining a set of parameters of a burst of laser pulses adapted to generate an ablation crater in the material, the set of parameters including an intra-burst repetition frequency f between several hundred MHz and 100 GHz, a number N of pulses of the burst of laser pulses equal to a number Nc of heating and ablation pulses, with Nc being defined by the equation Nc=(L2·f) / D, where L represents a test depth and D represents a thermal diffusion coefficient of the material to be ablated, with Nc being greater than or equal to 10, a characteristic total fluence FTchar of the burst of pulses and a characteristic fluence per pulse Fchar=FTchar / Nc below an ablation threshold fluence Fs1 of the material by a single laser pulse.

This application relates to a method, system, and computer device for selecting the number of pulses for blind vias. The method includes: obtaining the adaptive power of a test board; machining multiple first blind vias on the test board using the adaptive power and different pulse test counts; observing the hole quality characteristics of the multiple first blind vias; and selecting an appropriate number of pulses from the different pulse test counts. This method improves the accuracy of selecting the number of pulses for blind vias, thereby improving the machining quality of blind vias.

The application is suitable for the technical field of laser control, and provides a laser pulse number regulation system and method and a control terminal. The system comprises: a control module, which acquires preset pulse parameters when it is determined that a signal generation mode carried in a received mode selection command is a first generation mode, controls a femtosecond laser to send a corresponding first synchronization signal, a digital delay generation module, which generates a corresponding first square wave signal when triggered by the first synchronization signal, and a data acquisition module, which generates a first preset signal and sends it to the femtosecond laser to control the femtosecond laser to send a laser pulse signal corresponding to the first preset signal each time a first square wave signal containing a rising edge signal is detected; the first signal number is marked as one plus, the first preset signal is converted into a second preset signal, and the control module controls the data acquisition module to stop sending the first preset signal when the first signal number meets a second preset condition. The number of laser pulse signals is regulated, and the system has strong scalability and applicability.

The application relates to a quality evaluation method and device of an ultraviolet sensor, computer equipment, a readable storage medium and a program product. The method comprises the following steps: acquiring a pulse number data set, the pulse number data set comprising pulse numbers in a plurality of unit time lengths, the pulse number in the unit time length being determined by a time sequence pulse signal generated when the ultraviolet sensor is irradiated by ultraviolet light; determining a fluctuation coefficient and a drift coefficient based on the pulse number in the unit time length; the fluctuation coefficient is used to represent the discrete degree of the time sequence pulse signal, and the drift coefficient is used to represent the drift reference of the time sequence pulse signal; in the case that the fluctuation coefficient is less than a preset threshold value and the drift coefficient satisfies a preset condition, it is determined that the ultraviolet sensor is qualified. The foregoing method realizes quality evaluation of the ultraviolet sensor based on objective indexes, and the quality is evaluated from two dimensions of the fluctuation coefficient and the drift coefficient, so that the accuracy and reliability of the quality evaluation are improved.

The application provides a control system and control method for eliminating step loss in the positioning movement of a selection valve. The number of photoelectric pulses is determined by combining a photoelectric sensor and a special encoding disc for physical alignment of the execution hole position of the selection valve. In the movement process of the actuator, the actual number of photoelectric pulses of the special encoding disc is obtained by the photoelectric sensor. When the actual number of photoelectric pulses is consistent with the theoretical number of photoelectric pulses, the corresponding number of steps of the hole position offset is started to be executed. Finally, the execution hole position of the selection valve stays at the correct position, so that the automatic elimination of step loss in the positioning movement of the selection valve is realized. Since the direct alignment of the special encoding disc and the photoelectric sensor is adopted, the process is simple and the cost is low. Through the setting of the pulse number parameter mode for the continuous movement of the encoding disc and the selection valve hole position after matching, the alignment is accurate.

The application discloses a train wheel diameter value updating method and device, relates to the train control technical field, and mainly aims at improving system operation efficiency. The main technical scheme of the application is as follows: a first linking distance and a first speed sensor pulse number of a train in a first balise section are acquired; a new wheel diameter value is obtained according to the first linking distance and the first speed sensor pulse number; a second linking distance and a second speed sensor pulse number of the train in a second balise section are acquired; a new predicted running distance and a current predicted running distance are determined based on the new wheel diameter value and a current wheel diameter value respectively in combination with the second speed sensor pulse number; a check feature corresponding to the new wheel diameter value is generated according to the relationship between the new predicted running distance and the second linking distance and the relationship between the current predicted running distance and the second linking distance; and the current wheel diameter value is updated according to a preset correction strategy when it is judged that the current wheel diameter value needs to be updated based on the check feature and a preset correction condition.

The utility model provides a kind of monitor capable of displaying pulse breath ratio parameter, including monitor body, still including respiratory data acquisition unit and pulse measurement unit, both are connected with control unit, control unit is connected with display unit in monitor body;Respiratory data acquisition unit is configured to collect the respiratory data of patient, and it is transmitted to control unit after being converted into digital signal, control unit can obtain the respiratory frequency of patient per minute;Pulse measurement unit is configured to be able to collect the pressure signal of patient when measuring pulse, and it is transmitted to control unit after being converted into digital signal, control unit can obtain the pulse number of patient per minute according to pressure signal;Control unit divides the ratio of pulse number per minute by respiratory frequency per minute and transmits to display unit to show, the ratio of pulse number per minute by respiratory frequency per minute is pulse breath ratio parameter. The above-mentioned monitor can display pulse breath ratio parameter on monitor display interface.

This application relates to the field of power error measurement technology, and discloses a power error measurement method, chip, and standard power meter. The method includes: acquiring the tested pulse constant, the number of tested pulses, the standard pulse constant, and the measured power value; starting a first timer and a second timer, receiving the tested pulse from an external input through the first timer and outputting a standard pulse through the first channel of the second timer; when the first count value equals the measurement start count value, starting a third timer, with the clock source of the third timer being the standard pulse, capturing the first count register value of the second timer, and acquiring the first cycle register value of the second timer; when the first count value equals the measurement end count value, capturing the second count register value of the second timer, acquiring the second cycle register value of the second timer, and acquiring the third count register value of the third timer; and sequentially calculating the standard pulse number and power error using the aforementioned data.

The application discloses a hysteresis detection device and method of electronic expansion valve, comprising the following detection steps: step S1: origin reset and sealing verification; step S2: forward stroke detection: S21: point-by-point driving increases the opening of the electronic expansion valve; S22: setting the global value Pset of the inlet pressure of the electronic expansion valve, adjusting the measured inlet pressure value Pmeas of the electronic expansion valve of each pulse detection point to approach the pressure global value Pset; S23: correcting the pulse number of a single pulse point; S24: recording the forward output flow value corresponding to each pulse point; step S3: reverse stroke detection: recording the reverse output flow value corresponding to each pulse point; step S4: according to the forward output flow value and the reverse output flow value corresponding to each pulse point, calculating the hysteresis value of each preset detection pulse point. The application provides a hysteresis detection device and method of electronic expansion valve, and improves the hysteresis detection precision.

The application discloses a kind of intelligent electric energy meter operation error remote calibration method and electric energy meter, it is related to electric energy measurement calibration technical field, comprising: starting uniform time scale collection, obtain boundary marker sequence, the pulse sequence of being calibrated and reference pulse sequence, calculate minimum reference pulse number, obtain effective interval sequence, generate calibration segment;Filter correctable boundary, obtain mirror image duration, construct mirror image interval group, generate candidate translation set, calculate mirror image asymmetric quantity, generate correction boundary sequence;Generate calibration interval sequence, count the number of pulse in each calibration interval and convert corresponding electric quantity, filter and retain calibration interval sequence, generate write-in front relative deviation sequence and target correction code;After target correction code takes effect, reinitiate rechecking collection, generate write-in post relative deviation sequence, execute correction code retention or recovery, generate remote calibration record;Make operation error remote calibration process determination clear, rechecking has basis, and calibration record is traceable.

This invention discloses an intelligent fusion terminal and its input pulse metering and power calculation method. The pulse metering method of the intelligent fusion terminal determines the total number of original pulses detected within a statistical period, corrects the total number of detected original pulses, calculates the original pulse density within the statistical period, and corrects the original pulse density based on the relationship between the original pulse density and the correction interval using a multiplier factor and a compensation factor, or a multiplier factor, a compensation factor, and an offset, to obtain the corrected pulse count. This invention can achieve zero-loss long-term continuous pulse acquisition, reduces dependence on hardware filtering circuits, saves terminal costs, has low computational complexity, and is adaptable to resource-constrained embedded terminals.

The application provides a configurable servo rotation image taking method, an electronic device and a storage medium, and solves the problems of poor universality, weak adaptability, long debugging period, inability to balance image taking speed and precision and imperfect exception handling of an existing servo rotation image taking program. The method comprises the following steps: configuring the number of photographing, the angle value of each photographing point, the release point, the end point and the servo rotation speed through a touch screen; converting the angle value into an encoder target pulse number and writing the same into a high-speed counter comparison value list; after starting the servo rotation, comparing the pulse value in real time through the high-speed counter, and when the target pulse number is reached, outputting a camera trigger signal to execute a snapshot by hardware triggering interruption; confirming the collection state of each point through a loop program, skipping and alarming when the time is up; and simultaneously monitoring a grating, a servo alarm and a limit signal in real time to ensure safety. The application can be applied to scenes such as workpiece appearance detection, 3D image collection and product size measurement.

This invention provides a method and apparatus for measuring the rotational speed of an incremental encoder. The number of pulses to be acquired in the current acquisition cycle is determined based on the actual rotational speed calculated when the target number of pulses was acquired in the previous acquisition cycle and a fixed preset cycle. This ensures measurement accuracy without consuming excessive processor load, thus balancing computational accuracy and workload during both high-speed and low-speed rotation of the incremental encoder. Furthermore, it eliminates the need to distinguish between high-speed and low-speed rotation, avoiding difficulties in determining the switching point and the problem of switching jitter.

The present application relates to infusion pump technology field, especially infusion device control method, before the user starts to use the device, the self-locking type switch circuit is disconnected, the system is in zero power consumption complete power-off state, when the user starts to use the device, the trigger signal of opening the device is generated, the switch circuit is turned on and self-locked, and the control circuit is powered; thereafter, the system controls the subsequent process by accumulating the number of pulses sent to the drive mechanism: when the pulse number reaches the first preset value, the initialization is completed; when the second preset value is reached, the trigger of the needle assisting mechanism is completed, and the infusion needle is implanted into the human body; finally, according to the user setting infusion instruction starts infusion. The control method ensures the safety of the infusion device through the hardware barrier, realizes the automatic and accurate control of the initialization and needle assisting mechanism by using single pulse counting, and realizes the true zero standby power consumption, which significantly improves the safety, reliability and user experience of the infusion device.

The application discloses a dynamic focal plane position compensation method and system. The surface of a substrate is pre-scanned by a distance sensor, and a corresponding compensation array is generated by an upper computer and is issued to a PLC. High-frequency pulses output by an encoder are processed by a synchronization board to reduce the frequency, and are converted into trigger pulses with fixed spatial intervals and suitable for high-speed counting of the PLC. The PLC calculates the installation offset of the sensor and the focusing assembly to determine the compensation starting position, accumulates the pulse number, and when the number of pulses corresponding to the fixed interval is reached, the focal plane target value of the compensation array is sequentially read in the hardware interrupt, the mover of the linear servo module is driven to move along the linear servo module axis, the thickness of the optical system is adjusted by moving the lower optical assembly to change the focal length, and dynamic compensation is realized. When the platform is backed up, the interrupt is shielded and the counter is reset. The scheme realizes deterministic real-time focusing, automatically compensates for the installation offset, has a simple structure, fast response, and significantly improves the line width uniformity and product yield of long-stroke scanning exposure.

A method includes: generating a first sum value at least by a first resistor; generating a first shifted sum value based on the first sum value and a nonlinear function; generating a pulse number based on the first shifted sum value; and changing the first resistor based on the pulse number to adjust the first sum value.