9 results about "Pulse burst" patented technology

The invention discloses a multi-source interference real-time suppression algorithm suitable for a fusion terminal and an intelligent electric energy meter, and relates to the technical field of electric power Internet of Things terminal signal processing, and the algorithm comprises the following steps: constructing a multi-source interference mixed domain feature model; multi-source interference is separated and suppressed in real time through an adaptive sparse filtering method; dynamically adjusting filtering parameters, and optimizing filtering calculation through block processing and fixed-point operation; and real-time switching of interference types is supported. According to the multi-source interference real-time suppression algorithm, interference such as ringing waves, pulse trains and radio frequency fields is effectively separated and suppressed through mixed domain feature modeling and self-adaptive sparse filtering, the signal quality is optimized, the algorithm can dynamically adjust filtering parameters according to equipment types, the signal adaptability of a fusion terminal and an intelligent electric energy meter is ensured, and the real-time suppression of the multi-source interference is achieved. And meanwhile, low-power-consumption and high-efficiency real-time processing is realized through block processing and fixed-point operation, and the hardware requirement of an embedded platform is met.

Some embodiments include a high voltage waveform generator comprising: a generator inductor; a high voltage nanosecond pulser having one or more solid state switches electrically and / or inductively coupled with the generator inductor, the high voltage nanosecond pulser configured to produce a pulse burst having a burst period, the pulse burst comprising a plurality of pulses having different pulse widths; and a load electrically and / or inductively coupled with the high voltage nanosecond pulser, the generator inductor, and the generator capacitor, the voltage across the load having an output pulse with a pulse width substantially equal to the burst period and the voltage across the load varying in a manner that is substantially proportional with the pulse widths of the plurality of pulses.

This disclosure is directed to devices, systems, and techniques for delivering electrical stimulation. In some examples, a system includes processing circuitry configured to: receive information representative of a bioelectric brain signal recorded from a brain of a patient; and determine, based on the information, at least one pathological frequency of the bioelectric brain signal. Additionally, the processing circuitry is configured to select, based on the at least one pathological frequency, a sequence of pulse bursts at a pulse burst frequency, the sequence of pulse bursts at least partially defining electrical stimulation deliverable to an area of a brain of a patient, wherein adjacent pulse bursts within the sequence comprise different intra-burst pulse frequencies; and control a medical device to deliver the electrical stimulation comprising the sequence of pulse bursts to the area of the brain of the patient.

This invention relates to a method for identifying abnormal waveforms of partial discharge pulse groups based on a trigger threshold moving window, comprising: Step 1, calculating the average amplitude of a points at the beginning and b points at the end of the recorded waveform to obtain the reference offset value of the recorded waveform; Step 2, removing the reference offset value from the recorded waveform to form a processed waveform; Step 3, establishing an adjustable-duration trigger threshold moving window based on the trigger threshold Yz, and calculating the time standard deviation T and frequency standard deviation B of the data within the moving window when the absolute amplitude within the moving window is greater than or equal to Yz / m, and recording the extreme values ​​and corresponding positions when T×B≥1; Step 4, when the number of extreme values ​​k... j When the value is greater than 1, the time-domain waveform of the currently recorded single pulse is judged as an abnormal waveform; when the number of extreme values ​​k j When the value equals 1, the time-domain waveform of the currently recorded single pulse is determined to be a normal waveform. Compared with the prior art, the present invention has advantages such as good robustness.

A lidar system comprises (1) a lidar transmitter that switches from a baseline scan pattern to a pulse burst mode in response to a detection of a target in a field of view for the lidar transmitter, wherein the lidar transmitter transmits a pulse burst toward the target when in the pulse burst mode, and (2) a lidar receiver that refines an angle to the target based on returns from the pulse burst.

Systems and methods for creating arbitrarily-shaped ion energy distribution functions using shaped-pulse-bias. In an embodiment, a method includes applying a negative jump voltage to an electrode of a process chamber to set a wafer voltage for a wafer, modulating an amplitude of the wafer voltage to produce a train of groups of pulse bursts with different amplitudes, and repeating the modulating of the amplitude of the wafer voltage to repeat the train of the groups of pulse bursts to create an ion energy distribution function having more than one energy peak. In some embodiments, the negative jump voltage can include a single-cycle voltage waveform with a voltage ramp during an ion-current phase, in which the voltage ramp can be positive or negative and a duration of the ion-current phase can comprise more or less than fifty percent of a period of the waveform.

The invention provides a method of generating a burst of gigahertz laser pulses, wherein: 1) a time delay T2 of a delay section with respect to an undelayed portion of an input pulse is greater than a time period T1 between the input pulse and a next input pulse; 2) the burst of output pulses has an increasing number of pulses; 3) a burst-internal pulse spacing within the formed burst is equal to T3 = T2 - T1 and corresponds to an ultrahigh pulse repetition rate higher than 100 MHz. In another embodiment: 1) T2 is longer than M*T1, where M = 2, 3, etc.; 2) an output series of bursts consists of bursts of pulses, where M adjacent bursts have the same number of pulses; 3) T3 is equal to T3 = T2 - M*T1. A laser device for implementing the method is provided.

The invention relates to a device for generating a sequence of laser pulses consisting of pulse bursts. The object of the invention is to provide a possibility of generating laser pulses for material processing in the burst mode at a high quality based on the principle of beam combination. To that end, the invention proposes a device, comprising:at least one laser (1, 14, 15) which generates pulsed laser radiation in the form of a sequence of temporally equidistant individual pulses,a combination element (4) which superimposes the laser radiation supplied to the combination element (4) via at least two spatially separate input beam paths of different length, into pulse bursts in an output beam path (9),a coupling optics (10) arranged in the output beam path (9),an optical waveguide (11), wherein the coupling optics (10) couples the laser radiation superimposed in the output beam path (9) into the optical waveguide (11) at the input side thereof, and wherein the optical waveguide (11) guides the laser radiation primarily in a fundamental mode, anda decoupling optics (12) which couples out the laser radiation from the optical waveguide (11) at the output side thereof. Furthermore, the invention relates to a corresponding method.

The present application provides a multi-site frequency-modulated burst pulse stimulator, comprising: a plurality of output electrodes, which constitute a plurality of stimulation sites, wherein each stimulation site comprises at least one output electrode; a pulse generating device for outputting pulse bursts through the plurality of output electrodes, wherein a first pulse frequency and at least one second pulse frequency are provided, the first pulse frequency is greater than the second pulse frequency, and the pulse generating device modulates the pulse bursts output by each stimulation site so that one of the stimulation sites outputs high-frequency pulse bursts at the first pulse frequency and the remaining stimulation sites output low-frequency pulse bursts at the second pulse frequency in the same burst cycle.