44 results about "Test pulse" patented technology

The invention relates to the technical field of cable measurement, and discloses a cable length measurement method based on coupling inductance and TDC, and the method comprises the following steps: test pulse reset, channel sequential gating, threshold dynamic adjustment, TDC state configuration, channel stable waiting, test pulse generation, time difference precise capture, validity intelligent judgment and data sorting optimization. According to the cable length measurement method based on the coupling inductor and the TDC, the coupling inductor is adopted to replace an FPGA to generate narrow pulses, the TDC is adopted to replace a high-speed ADC, and the hardware cost is reduced by 60%-80%; by optimizing the pulse generation and echo detection circuit, the measurement blind area is reduced to 0.5 m, the short-distance cable measurement requirement is met, and the device has the advantage of being small in measurement blind area.

The invention discloses an energy storage black-start load identification method based on dynamic response and related equipment, and aims to solve the technical problem of high secondary collapse risk of a system caused by blind closing and power transmission of an unknown load in an energy storage black-start process in the prior art. According to the method, before formal switching-on power transmission, customized safety test pulses are generated through a pulse parameter model according to physical parameters of a power line, and dynamic response signals of loads are collected and analyzed, so that prospective recognition of the health states of the loads is achieved. According to the method, the load recovery in the energy storage black start is changed from blind closing to a controllable process of first diagnosis and then power transmission, so that the risk of secondary collapse of the system due to fault load access is fundamentally reduced.

This invention discloses a dynamic response-based load identification method and related equipment for energy storage black start, overcoming the high risk of secondary system collapse caused by blindly closing the circuit to unknown loads during the energy storage black start process. This method generates customized safety test pulses based on the power line physical parameters using a pulse parameter model before formally closing the circuit to power, and collects and analyzes the dynamic response signals of the load to achieve proactive identification of the load's health status. This invention transforms load recovery during energy storage black start from blind closing to a controllable process of diagnosis before power supply, fundamentally reducing the risk of secondary system collapse due to faulty load access.

A timing controller generates a second clock by using a first clock, generates a test pulse by using the second clock, and generates a plurality of test clocks by latching the test pulse. The timing controller determines whether the clock signal is normally generated, by using the number of a plurality of rising edges included in a cycle of the test pulse and the number of a plurality of falling edges included in the cycle of the test pulse. The plurality of rising edges are rising edges of the plurality of test clocks, and the plurality of falling edges are falling edges of the plurality of test clocks.

This application relates to a control link delay testing system, method, and apparatus. The system method includes: a valve control system and a test pulse module; the valve control system includes a main control module and a control link, the test pulse module is connected to the main control module via the control link, and the test pulse module is also directly connected to the main control module; the test pulse module outputs a preset test excitation signal to the main control module via the control link, receives a response signal returned by the main control module, and determines the uplink delay of the control link based on the transmission time of the test excitation signal and the reception time of the response signal; the test pulse module receives a pulse test signal sent by the main control module, and also receives a drive signal sent by the main control module via the control link, and determines the downlink delay of the control link based on the reception time of the pulse test signal and the reception time of the drive signal. Through the above testing process, accurate measurement of the uplink and downlink delays of the valve control system's control link can be achieved.

The invention provides an alternating-current dynamic traceability system and method for a novel electric power system, and aims to realize analog output of various types of wide dynamic characteristics and variable power signals and test and calibrate output signals. The system comprises a man-machine interaction unit used for carrying out parameter setting on a three-phase AC dynamic power output unit; the high-precision clock unit is used for providing a clock signal and a three-phase phase synchronization control signal for the three-phase alternating-current dynamic power output unit; the three-phase alternating-current dynamic power output unit is used for setting the parameters, the clock signal and the three-phase phase synchronization control signal, generating a standard pulse and a digital waveform signal, and generating a three-phase alternating-current dynamic power signal based on the digital waveform signal; the detected electric energy meter is used for receiving the three-phase alternating current dynamic power signal, measuring the three-phase alternating current dynamic power signal and generating a corresponding detected pulse; and the error calculation unit is used for receiving the standard pulse and the detected pulse and calculating the error of the detected pulse based on the standard pulse.

The application provides a waveform optimization method and device based on channel crosstalk, equipment and medium, used in the technical field of quantum waveform optimization, including: respectively applying test pulses to each control channel, and determining the test signal amplitude output by each quantum bit port according to the channel mapping relationship; determining the local crosstalk matrix corresponding to each preset frequency according to the plurality of test signal amplitudes corresponding to each control channel, and applying a preset waveform to the target quantum bit port to obtain a corresponding target waveform; based on the local crosstalk matrix, compensating the target waveform to obtain a target compensation waveform, and after outputting the target compensation waveform, determining a target residual signal based on the corresponding response waveform and the target waveform; based on the target residual signal, determining a plurality of signal characteristic values, and adjusting the local crosstalk matrix according to the signal characteristic values and the respective corresponding preset threshold values; in this way, by compensating the quantum channel crosstalk, the accuracy of the output waveform is improved.

The application provides a test platform and a test method for testing a pulse output device. The test platform comprises: a pressure device comprising a closed cavity and a pressure controller, wherein the closed cavity is used for placing the pulse output device, and the pressure controller is used for receiving a pressure control signal and generating a pressure event and a timestamp according to the pressure control signal, the pressure event comprises controlling the pressure change in the closed cavity, and the timestamp corresponds to the time when the pressure event occurs; and a control unit, which is in communication connection with the pressure controller, and is used for generating the pressure control signal, obtaining the timestamp, a working pulse of the pulse output device, and a time corresponding to the working pulse, corresponding the timestamp to the time corresponding to the working pulse, and outputting a corresponding relationship curve between the time when the pressure event occurs and the working pulse.

This invention relates to the field of electromagnetic field control technology, specifically to a control system for pulsed electromagnetic fields used in the repair of peripheral nerve injuries. The system acquires the action potential voltage amplitude of each spatial node within the coil's coverage area, calculates the pre-stimulation conduction blockage coefficient based on the voltage distribution and time delay correlation of adjacent nodes, identifies blockage nodes, determines the principal normal direction of the blockage region through principal component analysis, and generates a theoretical output current value by combining the coil's projected area in that direction with the blockage coefficient. Subsequently, a low-frequency test pulse is applied, the post-stimulation conduction blockage coefficient is acquired, and a stimulation intensity correction coefficient is calculated. Finally, the corrected actual output intensity is used as the execution parameter for the next round of test pulses, forming a closed-loop adaptive control. This invention overcomes the problem that traditional uniform stimulation parameters cannot match the electrophysiological heterogeneity of nerve injury regions, achieving spatially precise and functionally adaptable electromagnetic control.

A pressure sensor assembly (19) for remote testing of a pressure sensor (15) adapted to monitor the air pressure developed in an interior (21) of a container (1), the pressure sensor assembly (19) comprising: an enclosed chamber having (25): a first opening (31) arranged to communicate with the interior of the container (1); and a second opening (33) arranged to communicate with the pressure sensor (15) for monitoring air pressure developed in the interior (21) of the container (1); wherein the chamber (25) defines a channel for transmission of pressure between the first opening (31) and the second opening (33) and wherein a constriction (55) is formed in the channel, the pressure sensor assembly (19) further comprising: an air injection system (45) adapted to inject a test pulse (47) of air into the enclosed chamber (25), between the constriction (55) and the second opening (33), wherein the constriction (55) is configured to create a back pressure in the enclosed chamber (25) in response to the test pulse of air (47), and functional operability of the pressure sensor (15) is verified based on the pressure measured in response to the test pulse of air (47).

The application discloses an office building design method and system based on big data collection, relates to the technical field of building informatization and intelligent design, and comprises the following steps: S100, a test pulse is emitted point by point in a building corridor area, positioning signals and reflected echo data are collected, a reflected response sequence corresponding to a point is formed, and a reflected suspicious fragment list is constructed according to a response amplitude and a time delay difference; S200, static marker points are arranged in the area corresponding to the reflected suspicious fragment list, a picture sequence without personnel movement is continuously recorded, and a stable and unchanged static anchor point list is extracted and used as a baseline for subsequent personnel positioning track authenticity comparison. The application realizes whole-process suppression of pseudo displacement signals, accurately strips non-real personnel tracks, avoids space design and energy consumption decision deviation caused by misjudgment, improves the scientificity and efficiency of building design, and is suitable for positioning data cleaning and optimization in various complex indoor environments.

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.

This invention discloses an ASIC chip with an energy response self-calibration module, comprising a multi-pixel channel array containing N independent pixel channels. Each pixel channel includes a charge-sensitive amplifier module, a shaping circuit, a pulse energy discrimination module, and a counting module. The pulse energy discrimination module has a built-in comparator. The chip also includes an energy response self-calibration module, comprising a test pulse generator, a reference voltage control submodule, and a calibration logic control submodule. By controlling the pulse height and the magnitude of the reference voltage Vref, the S-curves of each pixel channel corresponding to different test pulse heights are obtained. Based on a preset calibration algorithm, the polynomial coefficients of the reference voltage and the calibrated DAC value for each pixel channel are calculated and stored. This invention enables consistent energy response across all pixel channels of the ASIC, and allows the calibration coefficients to be read after self-calibration to determine the differences between the ASIC channels.

This invention proposes a method for testing the dynamic on-resistance of GaN HEMTs, including the design of the test circuit, the connection method of the test device, the method of applying the test pulse signal, and the calculation method of the dynamic on-resistance. The proposed method for testing the dynamic on-resistance of GaN HEMTs can quickly and accurately measure the dynamic on-resistance of GaN HEMTs, providing a basis for reliability evaluation and degradation assessment of GaN HEMTs. The steps are as follows: Step 1: Configure the test circuit topology and fabricate the test circuit board for the dynamic on-resistance of GaN HEMTs; Step 2: Connect the test device, which includes a high-voltage power supply, an oscilloscope, a power supply unit, a signal generator, and the test circuit board; Step 3: Apply a pulse signal and simultaneously acquire feedback data. A predefined pulse signal is applied to the gate of the GaN HEMT under test through the signal generator, and the waveform data of the device under test is captured using the oscilloscope; Step 4: Calculate the dynamic on-resistance of the device under test based on the acquired waveform data.

The invention relates to the technical field of electrical equipment insulation detection, in particular to a packaging material space charge sampling method and system based on a Burst circuit, and the method comprises the steps: constructing a Burst pulse power supply, and triggering the Burst pulse power supply to emit a high-frequency test pulse sequence to a packaging material sample based on the polarity reversal of polarization voltage; synchronously acquiring an original space charge waveform generated by the packaging material sample under the excitation of the test pulse and a corresponding instantaneous polarization voltage; performing waveform recovery processing on the collected original space charge waveform, and processing the original space charge waveform by using a time-varying recovery matrix to obtain a high-fidelity space charge distribution waveform; and carrying out average noise reduction processing on the high-fidelity space charge distribution waveform after waveform recovery processing, and outputting space charge distribution data of the packaging material. The dynamic evolution law of charge rapid injection, migration and dissipation in the polarity reversal process can be completely captured.

The application discloses an analysis method for impact force of an impact machine represented by a pulse function, and comprises the following steps: acquiring reference datum according to test data, wherein the reference datum comprises i preset times and i preset impact forces corresponding to the i preset times; acquiring five test pulse functions according to the reference datum and five pulse functions, acquiring a reference pulse peak value, and acquiring a reference pulse width; calculating residuals of the reference datum and the five test pulse functions to obtain five residual data, wherein a test pulse function corresponding to a minimum value in the five residual data is an optimal pulse function; and calculating an optimal impact energy and an optimal pulse width of the optimal pulse function. The technical problem that the power effect of the impact machine cannot be comprehensively reflected in the prior art is solved, and the technical effect that the power effect of the impact machine is comprehensively reflected is achieved.

The invention relates to the technical field of intelligent sensing systems, and discloses a power module detection method and system based on a high-voltage pulse technology. The method comprises the following steps: injecting a low-voltage broadband spectrum representation pulse and collecting response, and identifying parasitic capacitance, inductance and resistance; injecting a high-voltage test pulse, collecting a distortion response waveform, and reconstructing an ideal insulation response waveform in a digital domain through an inverse system model based on the identification parameters; and finally, extracting characteristic parameters according to the waveform to judge the insulation state. The system comprises a dual-mode pulse generation module, a broadband waveform acquisition module, a parasitic parameter identification module, a waveform reconstruction processing module and an insulation state analysis module. According to the method, the detection accuracy, sensitivity and self-adaptive capability are remarkably improved.

This invention relates to the field of network protocol technology, specifically to a data processing method for a multi-protocol fusion monitoring terminal based on edge computing. The method includes: acquiring port static level signals and outputting test pulses; calculating the RC time constant; matching communication parameters to generate a port device identifier; based on the exposure time of video frames, backtracking and linearly interpolating in a circular buffer to generate synchronous sensor values; generating a spatiotemporally aligned fusion data stream and uploading it to the main processor; monitoring heartbeat signals sent by the main processor during the transmission of the fusion data stream; if the heartbeat interval exceeds a preset threshold, determining a data transmission link failure, blocking the normal display path of the fusion data stream, and outputting a preset alarm display interface; simultaneously performing data processing and transmission, capturing port surge current waveforms, extracting energy integral characteristic parameters, and comparing them with a benchmark fingerprint; if the device health status is determined to be abnormal, performing port isolation operations.

A digital input monitoring circuit and method include: an output terminal of a logic processing unit connected to the input terminal of an optocoupler isolation circuit; an input terminal of the logic processing unit connected to the input terminals of each digital input circuit; the logic processing unit outputs a control signal to the optocoupler isolation circuit and receives feedback signals from each digital input circuit; the feedback signals are compared and verified by the logic processing unit, and based on pulse width error and their presence or absence, it determines whether the digital input circuit or monitoring circuit is abnormal; both output terminals of the optocoupler isolation circuit are connected to each test branch; the output terminal of each test branch is connected to the pulse input terminal of a digital input circuit, and the test branch is used to generate test pulses; the digital input circuit is used to isolate the signals output by the test branches and external input signals, and output feedback signals. This invention reduces cost and circuit area, increases board functional density, and effectively ensures accurate and stable acquisition of digital input signals.

The invention relates to the technical field of steep-edge pulse forming of pulse forming circuits, in particular to a steep-edge pulse energy forming method based on a pulse forming circuit, which comprises the following steps: charging an energy storage capacitor bank in a preset charging period, and performing initial gating on a forming network formed by PFN sections and Blumlein transmission line sections and an impedance gradient matching network; when the charging voltage reaches a target value, a shaping switch is triggered to output a test pulse, an incident component and a reflection component are obtained through an output sampling branch, and a reflection characteristic quantity is generated; the reflection characteristic quantity executes gating updating on matching network segment impedance configuration and forming network segment combination according to a minimum reflection criterion, and a retest pulse is triggered to obtain a retest reflection characteristic quantity; and when the remeasured reflection characteristic quantity is smaller than or equal to the reflection judgment threshold value, triggering working pulse output, and obtaining a steep edge pulse energy forming result at the load end. According to the invention, impedance matching consistency and waveform stability are improved through reflection quantity closed-loop gating.

The invention relates to the technical field of medical instrument fault diagnosis, and discloses a carbon dioxide dot matrix laser therapeutic instrument fault detection method, which comprises the following steps of: establishing a reference driving parameter and a reference electrical impedance characteristic in a calibration stage; during detection, scanning coordinates, laser voltage and current and real-time driving signals are synchronously acquired. According to the method, laser dynamic impedance is calculated according to voltage and current, and if impedance deviates from a reference characteristic, a fault source is determined as a laser. If the impedance is normal, a compensation intensity scalar is calculated based on the difference between the real-time drive signal and the reference parameter, and a test pulse train is controlled to be transmitted to calculate a power modulation slope. And finally, according to the spatial distribution rule of the compensation intensity scalar along with the scanning radius and the power modulation slope, determining that the fault type is a geometric alignment fault, a thermally-induced pollution fault or global optical path attenuation. According to the invention, the electrical system fault and the optical path system fault can be effectively distinguished, and the specific attribute of the optical path fault can be accurately identified.

The application discloses an anti-nuclear radiation image differential transmission and control method and device and a storage medium. The method comprises the following steps: receiving a plurality of image signals and a test pulse signal transmitted by a transmitting end, determining a plurality of first spectral characteristics of the test pulse signal at each frequency; determining a plurality of second spectral characteristics of the test pulse signal of the transmitting end at each frequency, determining a corresponding first loss coefficient based on the plurality of first spectral characteristics, the plurality of second spectral characteristics and the plurality of frequencies; receiving a plurality of radiation intensities of nuclear radiation rays determined by an intensity sensor, determining a second loss coefficient based on a predetermined radiation intensity coefficient and the plurality of radiation intensities of the nuclear radiation rays; fusing the first loss coefficient and the second loss coefficient to determine a standard loss coefficient; and compensating the plurality of image signals based on the standard loss coefficient and the length of the unshielded twisted pair wire from the transmitting end to the receiving end and using a compensation value. The image signal can be accurately compensated.

This invention relates to the field of medical device fault diagnosis technology and discloses a fault detection method for a carbon dioxide fractional laser therapy instrument. The method establishes reference driving parameters and reference electrical impedance characteristics during the calibration phase; during detection, it simultaneously acquires scanning coordinates, laser voltage and current, and real-time driving signals. The method first calculates the laser's dynamic impedance based on voltage and current. If the impedance deviates from the reference characteristics, the fault source is determined to be the laser. If the impedance is normal, a compensation intensity scalar is calculated based on the difference between the real-time driving signal and the reference parameters, and the emitted test pulse train is controlled to calculate the power modulation slope. Finally, based on the spatial distribution of the compensation intensity scalar with the scanning radius and the power modulation slope, the fault type is determined to be a geometric alignment fault, a thermal contamination fault, or a global optical path attenuation. This invention can effectively distinguish between electrical system faults and optical system faults and accurately identify the specific attributes of optical path faults.

A medical device is configured to deliver a test pulse to an electrode terminal of the medical device. The medical device may measure a response signal to the test pulse for detecting a leakage current path based on the response signal. The medical device may determine, based on the response signal, that a leakage current path detection threshold is satisfied. The medical device may generate and send an alert in response to the leakage current path detection threshold being satisfied.

The invention relates to the technical field of magnetic shielding, and provides a residual magnetism state detection method and device, electronic equipment and a readable storage medium, and the method comprises the steps: obtaining a calibration magnetization curve, and enabling the calibration magnetization curve to be generated according to the response record data of a target magnetic shielding layer to a calibration excitation pulse, the calibration magnetization curve comprises a correlation corresponding relation among a surface residual magnetism change curve, a voltage change curve and a current change curve; aiming at the target magnetic shielding layer, transmitting a test excitation pulse, and obtaining test voltage data and test current data; wherein the test pulse width of the test excitation pulse is smaller than the preset proportion of the calibration pulse width of the calibration excitation pulse; and comparing the test voltage data and the test current data with the calibration magnetization curve to determine the current residual magnetism state of the target magnetic shielding layer. According to the technical scheme provided by one or more embodiments, the residual magnetism state of the magnetic shielding layer in the magnetic shielding device can be effectively detected.

The invention relates to the technical field of optical time domain reflectometer equipment, in particular to a method for improving the performance of an OTDR (Optical Time Domain Reflectometer), which comprises the following steps of: 1, supplying power to an APD (Avalanche Photo Diode) at a first voltage; 2, sending a test pulse, and measuring a saturation section; step 3, setting the power supply voltage of the APD in the saturation section as a second voltage; 4, resending the test pulse, supplying power to the APD at the second voltage in a saturation section, and supplying power to the APD at the first voltage in an unsaturated section; and 5, offsetting the test curve of the second voltage power supply section, and combining the offset test curve with the test curve of the first voltage power supply section to form a final OTDR test curve.

Disclosed are a method and system for quantum key distribution, the method comprising: determining, in at least one of first and second devices, an intrinsic loss along a quantum channel between the first and second devices; generating, in the first device, a pulse sequence comprising a test pulse and signal pulses generated from a first signal; determining, in the second device, a second signal from the pulse sequence; determining and providing, in the first and second devices, an invalid signal position; determining, in the first and second devices, first and second coordinated signals, respectively, from the first and second signals and the invalid signal position, respectively; determining a total loss along the quantum channel from the test pulse, determining a signal loss from the total loss and the intrinsic loss; determining shared keys by error correction of the first and second coordinated signals in the first and second devices, respectively; determining, in the first and second devices, amplified keys from the shared keys by shortening the shared keys by an amount determined from the signal loss.

The present application relates to photomultiplier tube testing device and method, specifically relates to a kind of microchannel plate type photomultiplier tube pulse saturation recovery characteristic testing device and method, solve the technical problems that existing MCP-PMT pulse saturation recovery characteristic testing device does not match with actual application demand, cannot evaluate the pulse saturation recovery characteristic under different saturation depth and different recovery degree.The present application utilizes laser diode and light attenuator in dark box environment, and pulse signal generator, power divider, combiner, high voltage source, digitizer and data processing unit carry out pulse saturation recovery characteristic test to MCP-PMT, pulse signal generator generates two drive pulse signals with different pulse width in succession, and it matches with the actual application demand that MCP-PMT works in linear state, measurement result can reflect the saturation recovery characteristic of MCP-PMT in actual application, also can evaluate the pulse saturation recovery characteristic of MCP-PMT under different saturation depth and different recovery degree.

The present application relates to the technical field of steep pulse shaping of pulse forming circuit, and particularly relates to a steep pulse energy shaping method based on a pulse forming circuit, which comprises: charging an energy storage capacitor group in a preset charging period, and initially gating a shaping network composed of PFN segments and Blumlein transmission line segments and an impedance gradient matching network; triggering a shaping switch to output a test pulse when a charging voltage reaches a target value, obtaining an incident component and a reflected component through an output sampling branch and generating a reflected characteristic quantity; the reflected characteristic quantity performs gating update on the matching network segment impedance configuration and the shaping network segment combination according to the minimum reflection criterion, and triggers a retest test pulse to obtain a retest reflected characteristic quantity; triggering a working pulse output when the retest reflected characteristic quantity is less than or equal to a reflected judgment threshold, and obtaining a steep pulse energy shaping result at a load end. The present application improves impedance matching consistency and waveform stability through reflected quantity closed-loop gating.