67 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.

The invention discloses a test fixture, a test system and a test method, and relates to the technical field of server tests.The test fixture comprises a first controller, the first controller stores line sequence relation information, and the first controller is sequentially connected with an output connector, a test accompanying virtual board, a second controller, a to-be-tested virtual board and an input connector; the first controller is connected with the to-be-tested virtual board, so that the to-be-tested virtual board is controlled by the second controller to send a test pulse signal from the preset port, and when the first controller receives the test pulse signal, the conduction port information associated with the test pulse signal is obtained, and the conduction port connection is configured, so that the communication between the preset port and the target port is realized. Therefore, the problems that manual cable detection and wiring adjustment are tedious in work, long in consumed time and very low in efficiency are solved, the wiring sequence of the cables on the board card can be automatically corrected, the states of the cables on the board card can be automatically detected, and the quality inspection efficiency and the detection quality are improved.

The invention discloses an intelligent power consumption control method for a vacuum circuit breaker, and particularly relates to the technical field of circuit breakers. An electromagnetic response model of a permanent magnetic mechanism is constructed by obtaining environment parameters and historical operation data of a circuit breaker, and the relation between PWM frequency and a resonance area is judged in real time and dynamically adjusted; a test pulse mechanism is introduced to verify action conditions, and action accuracy is ensured in combination with closed-loop monitoring of current and magnetic field response; according to the method, the operation reliability, the action accuracy and the energy efficiency level of the circuit breaker in a complex environment are effectively improved.

A medical RF apparatus using an RF pulse and a method of controlling the medical RF apparatus are provided. The medical RF apparatus includes an RF generator, which generates a test pulse for detecting characteristics of tissue, a monitoring unit, which monitors the change in the information on the tissue state while the test pulse is transmitted to the tissue, and a measurement unit, which determines the tissue characteristics of a patient by comparing the values monitored in the monitoring unit with the reference data.

Provided is a method and device for correcting an error in a communication system, the method including: transmitting, to another device, data encrypted based on key information. The key information is obtained by: incident a detection pulse on a variable Faraday rotating mirror and a reference pulse on a first mirror, respectively, wherein the detection pulse and the reference pulse are pulses branched from a test pulse; generating a first current in a balanced photodetector (BPD) based on a first component obtained as the detection pulse is reflected from the variable Faraday rotating mirror and a second component obtained as the reference pulse is reflected from the first mirror; converting the first current into a second current; incident the second current on the variable Faraday rotating mirror; and correcting the error in the variable Faraday rotating mirror based on the incident second current.

The invention provides a simulation temperature rise test system for a magnetic device, and the system comprises an upper computer which is connected with a display and is used for setting test parameters. The control signal processor is used for receiving the test parameters of the upper computer and performing signal conversion to obtain a test pulse signal; the inductance on-line simulator is used for receiving the test pulse signal, at least two test ends are arranged in the inductance on-line simulator, the test ends are connected with a magnetic device to be tested, and the test ends are used for driving the magnetic device according to the test pulse signal; the oscilloscope is electrically connected with the output end of the inductance online simulator and is used for receiving temperature rise and loss data of the magnetic device driven by the test pulse signal, exporting the received temperature rise and loss data and displaying the received temperature rise and loss data on the display in a curve mode; the magnetic device simulation temperature rise test system provided by the invention is good in integration, and facilitates performance comparison between different magnetic devices.

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 present invention discloses a relay type ground fault protection device, which includes a switch module, a relay module, a leakage detection module, a self-test module and a drive module. The switch module is coupled between the input end and the output end of the trunk line to control the power connection between the input end and the output end; the relay module is coupled to the input end and the switch module to control the switch action of the switch module; the leakage detection module is coupled to the trunk line to detect whether there is a leakage fault signal at the output end of the trunk line; the self-test module is coupled to the trunk line and the leakage detection module to periodically generate a self-test pulse signal simulating a leakage current signal to detect whether the leakage detection module fails; the drive module is coupled to the leakage detection module, the self-test module and the relay module to drive the relay module based on the received leakage fault signal and / or the self-test fault signal related to the leakage detection module. The present invention has the advantages of high safety, simple structure, low cost, high detection sensitivity, etc.

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.

A method for jitter applied detection for a semiconductor secure element including generating a test waveform comprising a test pulse. The test waveform is modulated with an inductive loop coupled to a secure element and to an Electromagnetic (EM) signal to generate an observed waveform comprising an observed pulse, wherein the secure element comprises a flip-flop. A temporal change is measured between the test pulse and the observed pulse and the temporal change is compared to a reference to determine an Electromagnetic-Fault-Injection (EMFI) event.

The present invention discloses an intelligent power consumption control method for a vacuum circuit breaker, specifically relating to the technical field of circuit breakers. By acquiring the environmental parameters and historical operating data of the circuit breaker, an electromagnetic response model of a permanent magnet mechanism is constructed, and the relationship between the PWM frequency and the resonant region is determined in real time and dynamically adjusted. A test pulse mechanism is introduced to verify the operating conditions, and closed-loop monitoring of the current and magnetic field response is combined to ensure the accuracy of the operation. After the operation is completed, the holding current is automatically turned off, and a low-power consumption mode is entered. This method effectively improves the operating reliability, operation accuracy, and energy efficiency of the circuit breaker in complex environments.

The present invention relates to a method and device for testing transient pulse response characteristics of a thyristor during reverse recovery, wherein the method comprises: step S1: applying a half-sine wave signal to both ends of a thyristor to be tested to keep the thyristor in a conducting state; step S2: measuring the current of the thyristor, and judging the working state of the thyristor based on the measured current of the thyristor; step S3: when the thyristor is in the reverse recovery period, applying a test pulse to both ends of the thyristor, and measuring the current and voltage at both ends of the thyristor, and calculating its impedance; step S4: changing the amplitude of the test pulse, and repeating the above steps to obtain the impedance of the thyristor under test pulses of different voltages, and drawing an impedance-voltage curve; step S5: extracting impedance characteristics based on the drawn impedance-voltage curve, and judging the health state of the thyristor based on the extracted impedance characteristics. Compared with the prior art, the present invention improves the detection accuracy.

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.

The invention provides a high-precision airborne cable length measurement method and system, and the method comprises the steps: transmitting a test pulse signal, and generating a counter starting signal; processing the test pulse signal to obtain a processed test pulse signal, and performing shaping and signal amplification on the test pulse signal; an echo signal is obtained, the echo signal is reduced and detected in sequence, and a counter cut-off signal is generated; extracting a time interval between the processed test pulse signal and the processed echo signal based on the initial signal and the cut-off signal; the length of the cable is calculated based on the time interval and the dielectric constant of the cable. According to the invention, the pulse test signal is shaped and amplified, so that the pulse test signal can detect the cable with a long section less than one meter, and the length of the cable is calculated by reducing and detecting the echo signal and testing the time interval between the pulse signal and the echo signal. And the breakpoint position of the cable smaller than 10cm can be accurately judged.

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 present invention relates to a high-speed switch protection circuit for dynamic testing of power devices, which includes a first device under test Q1, a first diode under test D1, a load inductor L, a bus power supply Vbus, a test pulse generator P2, and a digital storage oscilloscope DSO; the bus power supply Vbus is grounded through a series connection of a high-speed switch module, the load inductor L, and the first device under test Q1, the load inductor L is connected in parallel with the first diode under test D1, the positive electrode of the first diode under test D1 is connected to the collector of the first device under test Q1, the gate and emitter of the first device under test Q1 are connected to the test pulse generator P2, and the digital storage oscilloscope DSO detects the voltage and current of the first device under test Q1; the high-speed switch module controls the connection or microsecond-level turn-off of the bus power supply Vbus before and after the test double pulses of the test pulse generator P2. The present invention removes the bus high-voltage power supply within microseconds after the test pulse ends, ensuring that the power module does not overheat and burn out.

The invention discloses an anti-nuclear radiation image differential transmission and control method and device and a storage medium. Comprising the following steps: receiving a multi-frame image signal and a test pulse signal sent by a transmitting end, and determining a plurality of first spectrum features of the test pulse signal on each frequency; determining a plurality of second spectrum features of the test pulse signal of the transmitting end on each frequency, and determining a corresponding first loss coefficient based on the plurality of first spectrum features, the plurality of second spectrum features and the plurality of frequencies; receiving the radiation intensities of the plurality of nuclear radiation rays determined by the intensity sensor, and determining a second loss coefficient based on a predetermined radiation intensity coefficient and the radiation intensities of the plurality of nuclear radiation rays; fusing the first loss coefficient and the second loss coefficient, and determining a standard loss coefficient; and based on the standard loss coefficient and the length of the unshielded twisted pair from the transmitting end to the receiving end, compensating the multi-frame image signal by using the compensation value. And the image signal can be accurately compensated.

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.

A method for detecting a cooling element type includes determining a quantity of cooling elements for a computing device. Each of the cooling elements is of a cooling element type. The method includes causing each cooling element to operate at a test pulse width modulation (“PWM”) value. Each cooling element is controlled using PWM. The method includes measuring a total current draw of the cooling elements and comparing the total current draw to each of a predicted current draw at the test PWM value of a quantity of cooling elements of a particular cooling element type. The quantity of cooling elements of each of the cooling element types matches the determined quantity of the plurality of cooling elements. The method includes determining, based on the comparing, whether each of the plurality of cooling elements are of a same cooling element type or are of a mixture of cooling element types.

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.