28 results about "Test pulse" patented technology

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.

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 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.

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.

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.

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.

The embodiment of the invention provides a switching system and method for multiband OTDR optical path multiplexing, and belongs to the technical field of optical fiber testing and optical communication detection. The system comprises a multi-band transmitting unit which is used for switching among a plurality of working bands and outputting OTDR test pulses of corresponding bands; the optical path multiplexing unit is used for respectively introducing the test pulses of the plurality of working wavebands into a measurement optical path and a reference optical path through a unified optical path; the internal reference optical fiber is used for providing reference echo signals for calibration under a plurality of working wavebands; the multi-band echo receiving unit is used for performing band separation on the echo light from the measuring light path and the reference light path and outputting echo signals of corresponding bands; and the control and calibration unit is used for performing normalization processing on the echo signal of each working wave band based on the calibration result. According to the scheme, the test pulse output consistency and the echo data comparability are kept under the multi-band condition, so that a cross-band unified measurement result capable of being used for conjoint analysis is obtained.

Provided is a testing circuit including a measurement circuit which generates an output voltage and performs a voltage application current measurement test of a device under test by using the output voltage, a pulse generation circuit which generates a pulse signal by using the output voltage of the measurement circuit in a functional test of a device under test to supply the pulse signal to a terminal of a device under test and causes the output voltage of the measurement circuit to pass therethrough in the voltage application current measurement test to supply the output voltage to a terminal of a device under test as a test voltage, and an output end feedback line which is connected to an output end side of the pulse generation circuit and feeds back a voltage on the output end side to the measurement circuit.

The invention provides a test platform and a test method for testing a pulse output device. The test platform comprises a pressure intensity device which comprises a closed cavity and a pressure intensity controller, the closed cavity is used for placing the pulse output device, and the pressure intensity controller is used for receiving a pressure intensity control signal and generating a pressure intensity event and a timestamp according to the pressure intensity control signal, the pressure event comprises the control of the pressure change in the closed cavity, and the timestamp corresponds to the occurrence moment of the pressure event; the control unit is in communication connection with the pressure intensity controller, and the control unit is used for generating the pressure intensity control signal and obtaining the timestamp, the working pulse of the pulse output device and the moment corresponding to the working pulse; and enabling the timestamp to correspond to the moment corresponding to the working pulse, and outputting a corresponding relation curve between the occurrence moment of the pressure event and the working pulse.

The present application relates to the field of explosive identification and detection, and relates to an explosive identification and detection method based on spectral technology. The present application obtains the actual temperature difference and the heating rate of each point on the surface of the package to be detected and the background in real time, identifies the thermal anomaly area, and analyzes the thermal response coefficient. A preset low-energy test pulse laser is emitted to the thermal anomaly area, the peak intensity attenuation coefficient of the candidate characteristic peak in the first Raman spectrum sequence is obtained, the thermal effect sensitive coefficient is calculated by combining the temperature change amount of the abnormal area, the pulse energy of the formal laser is adjusted, the half-height width and the peak position offset amount of the candidate characteristic peak in each frame spectrum in the second Raman spectrum sequence are obtained, the thermal effect sensitive coefficient and the thermal response coefficient are compensated based on the thermal effect sensitive coefficient and the thermal response coefficient, the final half-height width and the peak position are obtained, the matching factor of the final half-height width and the peak position and the reference characteristic peak parameter of the explosive is calculated, whether the explosive exists is judged, if the explosive exists, the explosive category is output, and the detection accuracy is improved.

The application relates to the technical field of power equipment insulation detection, in particular to a packaging material space charge sampling method and system based on a Burst circuit, which comprises the following 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 polarity reversal of a polarization voltage; synchronously collecting original space charge waveforms generated by the packaging material sample under the test pulse excitation and corresponding instantaneous polarization voltages; performing waveform recovery processing on the collected original space charge waveforms, processing the original space charge waveforms by using a time-varying recovery matrix, and obtaining high-fidelity space charge distribution waveforms; and performing average noise reduction processing on the high-fidelity space charge distribution waveforms subjected to the waveform recovery processing, and outputting packaging material space charge distribution data. The dynamic evolution law of charge rapid injection, migration and dissipation in the polarity reversal process can be completely captured.

The invention provides a test circuit, a test device and a test method, which can restrain the circuit scale of a pin electronic device and can prevent the degradation of a high-speed pulse signal. The test circuit includes: a measurement circuit that generates an output voltage and performs a voltage applied current measurement test of the device under test using the output voltage; and a pulse generation circuit that generates a pulse signal using the output voltage of the measurement circuit during a function test of the device under test and supplies the pulse signal to a terminal of the device under test, and that passes the output voltage of the measurement circuit during a voltage application current measurement test and supplies the pulse signal to the terminal of the device under test. The output voltage is used as a test voltage to be supplied to a terminal of the tested device; and an output end feedback line which is connected to the output end side of the pulse generation circuit and feeds back the voltage of the output end side to the measurement circuit.

A power conversion device with a 3-level TNPP circuit of one form has: a voltage detection section that detects the voltage between a DC positive electrode and a DC neutral point, the voltage between the DC neutral point and a DC negative electrode, and the voltage between the DC positive electrode and the DC negative electrode; a test pulse output section that outputs a test pulse to an inner side switching element connected in forward direction from the DC neutral point toward an AC output terminal in the case where the voltage detected by the voltage detection section rises beyond a prescribed threshold value within a low voltage region, respectively; and a determination section that, in the case where the test pulse output section outputs a test pulse to the inner side switching element connected in forward direction from the DC neutral point toward the AC output terminal, determines that a short circuit failure has occurred in an outer side switching element connected to the DC negative electrode if the voltage between the DC neutral point and the DC negative electrode detected by the voltage detection section falls.

The application relates to the technical field of intelligent sensing systems, and discloses a power module detection method and system based on high-voltage pulse technology. The method comprises the following steps: injecting a low-voltage broadband spectrum characteristic pulse and collecting a response, identifying parasitic capacitance, inductance and resistance; injecting a high-voltage test pulse again, collecting a distorted response waveform, and reconstructing an ideal insulation response waveform in a digital domain based on the identified parameters through an inverse system model; and finally determining an insulation state according to the waveform to extract characteristic parameters. The system comprises a dual-mode pulse generation module, a broadband waveform collection module, a parasitic parameter identification module, a waveform reconstruction processing module and an insulation state analysis module. The application significantly improves detection accuracy, sensitivity and self-adaptive capability.

The invention relates to the technical field of mechanical control, in particular to a motor resonance frequency detection method and device and a motor system. The method comprises the following steps: setting a plurality of first pulses with increasing amplitudes to test a motor to obtain a plurality of first test images; obtaining a fluctuation frequency and a critical frequency of the first test image according to the first test image; determining an adjustment value and a test frequency according to the fluctuation frequencies and the critical frequencies of all the first test images; setting a plurality of second pulses with progressively decreased amplitudes according to the adjustment value to test the motor to obtain a plurality of second test images, and updating the test frequency and the adjustment value according to the plurality of second test images; if the adjustment value is not 0, repeatedly setting the second pulse and updating the adjustment value until the adjustment value is 0, otherwise, setting the test pulse according to the test frequency; and testing the motor by using the test pulse. According to the invention, the problem that the detected resonant frequency is inaccurate due to improper selection of the test pulse is solved.