225results about "Digital variable/waveform display" patented technology

The invention discloses a wire drawing machine operation state evaluation method and system based on deep learning, and relates to the technical field of intelligent manufacturing, and the method comprises the steps: deploying a multi-source sensor at a preset part of a wire drawing machine, and forming a multi-dimensional operation data flow; the deep learning evaluation model is trained based on the standardized time series data set, model parameters are optimized through a cross entropy loss function, the model learns the characteristic difference between a normal working condition and an abnormal working condition, and the deep learning evaluation model is trained based on the standardized time series data set. And inputting a multi-dimensional operation data flow collected in real time into the trained deep learning evaluation model to generate a dynamic evaluation report. According to the wire drawing machine operation state evaluation method and system based on deep learning provided by the invention, a visual operation state score can be output, detailed fault type probability distribution is given, and intelligent support is provided for equipment maintenance decision.

The invention, which belongs to the technical field of electromagnetic signal monitoring, relates to a rapid judgment method for a spatial spill electromagnetic signal, and the method specifically comprises the following steps: S1, receiving a spill electromagnetic signal in a space; s2, dividing the monitoring total frequency band into a plurality of sub-frequency bands with the same width, rapidly analyzing the obtained electromagnetic signal frequency spectrum in real time based on multi-scale spectrum entropy analysis, and positioning the frequency band where the characteristic signal is located; and S3, converting the frequency spectrum of the frequency band where the characteristic signal is located into a time domain signal, and simultaneously displaying a spectrogram and a time domain waveform. Through spectrum segmentation, multi-scale spectrum entropy analysis, adaptive threshold judgment and frequency domain-time domain combined display, the problems of poor real-time performance, weak anti-noise capability and single dimension in the prior art are solved.

The invention provides a novel environment-friendly insulating gas surface flashover characteristic evaluation method based on surface charge on-line measurement, which comprises an electric field measurement system based on an electric field induced second harmonic effect (EFISH), a coupling high-voltage surface flashover experiment system, and an evolutionary process of an electric field in a process of applying high voltage to surface flashover, the evolutionary process of charge distribution is obtained based on the electrostatic field source relation, the starting moment of surface flashover is determined by measuring sound, light and electromagnetic signals in the surface flashover process, and the starting area of the surface flashover is observed through a high-speed camera; and associating the relationship between the charge and the surface flashover, and quantitatively explaining the induction effect of the charge on the flashover.

The invention discloses a rectifier bridge arm fault identification method and system circuit based on multi-characteristic current waveform analysis, and relates to the technical field of rectifier bridge arm fault identification, and the method comprises the steps: collecting a current signal of an AC input side of a rectifier bridge through a current sensor, and obtaining an original current time domain waveform after filtering conditioning; performing period division on the original current time domain waveform based on a voltage synchronization signal, and outputting a positive half-cycle conduction interval and a negative half-cycle conduction interval in each power frequency period; in each power frequency period, performing square integral operation on the current waveforms of the positive half-cycle conduction interval and the negative half-cycle conduction interval to obtain a positive half-cycle energy value and a negative half-cycle energy value, and calculating an energy unbalance degree; and windowing fast Fourier transform is carried out on the original current time domain waveform, amplitudes and phases of third, fifth and seventh characteristic harmonics are extracted to form a harmonic characteristic vector, the vector is matched with a pre-stored bridge arm fault harmonic fingerprint template, and the matching degree of each fault type is obtained.

This invention relates to the field of data processing, and more particularly to an oscilloscope signal data processing method and system for bearing testing. The method involves acquiring bearing vibration data using an oscilloscope, extracting data from a first time moment for frequency domain analysis, obtaining its power spectrum, and dividing it into frequencies to obtain a first frequency sequence. Similarly, a second frequency sequence is obtained from the data at a second time moment. Aligning the two frequency sequences yields frequency matching pairs. Utilizing the frequency variations of neighboring frequencies within a single matching pair, the noise figure of each frequency in the matching pair is calculated, resulting in the noise figure for any frequency in the first frequency sequence. Based on these noise figures, a first mean sequence is constructed. The distribution consistency of each frequency point in the first mean sequence is obtained, and the segmentation effectiveness of each frequency point is calculated. Combined with a noise segmentation threshold, oscilloscope signal processing is completed. This invention denoises bearing vibration data acquired by an oscilloscope, improving the accuracy of the denoised oscilloscope signal data.

The present disclosure relates to a test and / or measurement system having a processing circuit configured to process a signal and to determine at least a first presentation based on a first parameter and a second presentation based on a second parameter when processing the signal, wherein the second parameter is different to the first parameter. The test and / or measurement system includes a display connected with the processing circuit, which is configured to display either the first presentation or the second presentation at the same time. The test and / or measurement system includes a storage medium configured to store first data associated with the first presentation and second data associated with the second presentation. Further, a computer-implemented method of gathering data of a signal as well as a computer program product are described.

The utility model provides a test system for a power device, and the system comprises power equipment which is used for applying high-voltage excitation between a source electrode and a drain electrode of the power device; the semiconductor parameter analyzer is used for applying bias voltage to the grid electrode of the power device; the oscilloscope is combined with the current probe to measure the drain current of the power device; and the upper computer is used for controlling the working time sequence of the power supply equipment and the semiconductor parameter analyzer so as to realize the scanning test of the device parameters. By combining the high-voltage power supply, the oscilloscope and the general semiconductor parameter analyzer, the performance of the power device under different voltage and current conditions can be comprehensively evaluated, the reliability and stability of the device in practical application are ensured, and the test cost is also considered.

The invention discloses a power frequency waveform classification method and device, a medium and equipment, and belongs to the field of waveform classification, and the method comprises the steps: obtaining preprocessed power frequency waveform data of a power transmission line, calculating various waveform features, and inputting the features into a preset cascade classifier model. The model is composed of a plurality of XGBoost binary classifiers which are cascaded in sequence, and each classifier is responsible for executing a specific binary classification task. The output result of the previous classifier is used for triggering the starting of the next classifier, or the final classification result is directly output. The cascade structure not only improves the accuracy and efficiency of classification, but also reduces the complexity of the model, and effectively solves the problem that the fault positioning power frequency of the power transmission line cannot be accurately and efficiently classified in the prior art.

Embodiments of the present application disclose a kind of to be displayed object color control method, device, display equipment and medium.The method includes: obtaining the to-be-displayed object information of to-be-displayed object, and corresponding to-be-displayed object interface is generated according to the to-be-displayed object information;The color information of the to-be-displayed object interface is configured based on the preset to-be-displayed object color mapping frame, and the to-be-displayed object color mapping frame is used to configure the mapping relationship of the to-be-displayed object information and the color information of the to-be-displayed object on the current display interface;According to the color information of configuration, the to-be-displayed object information of the to-be-displayed object interface is displayed.The technical scheme of the embodiment of the present application can freely select the color information displayed by to-be-displayed object, and the mapping relationship of the selected color information and to-be-displayed object is displayed in display interface in real time, facilitate user operation, improve the use experience of user.

The invention relates to the technical field of electric appliance cabinet control, in particular to an intelligent electric appliance cabinet state evaluation method based on multi-dimensional time sequence data, and the method comprises the steps: collecting operation and environment data when an electric appliance cabinet acts; dynamically correcting the historical sample by using the temperature difference and the waveform change rate to generate a self-adaptive reference waveform; calculating a topology distortion index and an energy efficiency deviation index based on the current time sequence data and the adaptive reference waveform; and fusing the topological distortion index and the energy efficiency deviation index to calculate a mahalanobis distance to obtain a comprehensive abnormal score, and evaluating the state of the electric appliance cabinet according to the comprehensive abnormal score. By generating the environment adaptive reference waveform and fusing the multi-dimensional features, environment interference can be effectively stripped, macroscopic and microscopic fault features are captured, and the accuracy and robustness of fault diagnosis are improved.

This invention discloses a method for automatically calculating the two-channel switching time of a power supply panel. During the testing process, a control command is used to enable an oscilloscope to accurately sample data points. Based on the voltage amplitude and frequency of the preceding and following AC waveforms and the standard formula for a sine wave, the trend of the changing sine wave is predicted. The predicted trend waveform points are compared with the corresponding points sampled by the oscilloscope, and the moments of abrupt changes in the waveform are identified. The time difference between these two moments is the two-channel power supply switching time. This invention can reliably and quickly detect the two-channel switching of a power supply panel, reducing the risk of defective products entering the customer's possession.

The application discloses a flyback transformer winding loss evaluation method, device, equipment and storage medium, and the method comprises the following steps: acquiring electrical data in a preset switching period, and actual primary side current waveform and actual secondary side current waveform of a to-be-tested flyback transformer under the electrical data, and constructing a current calculation model to obtain a primary side current change function and a secondary side current change function; then, the primary side current change function and the secondary side current change function are subjected to Fourier decomposition to obtain a primary side DC component, a primary side harmonic component, a secondary side DC component and a secondary side harmonic component; then, selected primary side harmonic components, selected primary side harmonic frequencies, selected secondary side harmonic components and selected secondary side harmonic frequencies are determined; subsequently, the primary side AC resistance, the primary side DC resistance, the secondary side AC resistance and the secondary side DC resistance of the flyback transformer are acquired; finally, the winding loss value of the to-be-tested flyback transformer is calculated. Through implementation of the application, the winding loss of the flyback transformer can be quantitatively calculated.

The invention relates to a double-pulse test tool and method for a full-control device series valve, and the tool comprises an upper computer main control unit which is used for transmitting a control instruction, receiving waveform data, and carrying out the automatic parameter calculation; the control unit is connected with the upper computer main control unit, comprises a high-voltage power supply, a support capacitor and a bridge arm change-over switch, and is used for providing adjustable high voltage and realizing rapid reconstruction of a test loop; the test unit is electrically connected with the control unit and the to-be-tested device and comprises a busbar box and a load inductor, and the busbar box is used for interconnecting the supporting capacitor, the load inductor, the bridge arm change-over switch and the to-be-tested device to form an energy transmission main loop; and the acquisition unit is connected with the upper computer main control unit and the test unit, comprises an oscilloscope, a voltage probe and a current probe, and is used for capturing the electrical parameter waveform of the device to be tested in real time and uploading the electrical parameter waveform to the upper computer main control unit.

The invention relates to the technical field of waveform display, in particular to an eye pattern generation method and system based on a high-resolution oscilloscope, and the method comprises the following steps: analyzing a channel impact response, extracting effective delay, defining an operation kernel range, constructing sparse inverse filtering compensation distortion, judging an edge generation eye pattern track, and quantifying noise as a weight to carry out sub-pixel diffusion. According to the method, a delay set is established, a non-linear participation range is made to fit real channel behaviors, a high-order cross product is constructed in an original waveform, detail compensation of amplitude and time is enhanced in a sparse inverse filtering mode, and zero point and amplitude characteristics of a second derivative are combined, so that the error rate contour is deduced. A real edge interval is separated, continuous diffusion is formed in a histogram through a discrete probability weight constructed by quantizing noise, so that a statistical form of a low-probability region is completely reserved, and an error code related boundary presents a regular distribution structure in combination with a tail probability gradient.

According to an embodiment of the disclosure, a display device includes a display unit including a plurality of areas, a driver integrated circuit including a plurality of integrated circuits driving the display unit, and a storage medium configured to store temperature information of the display unit. Each of the temperature information includes data for temperature increment values for each area of the display unit when the driver integrated circuit is driven.

The utility model discloses a system for measuring the half-wave voltage of a phase modulator. The system comprises a laser generation module, an optical coupler, a first phase modulator, a second phase modulator, a first Faraday mirror, a second Faraday mirror, a signal generator, a photoelectric detector and an oscilloscope. The utility model discloses a system for measuring the half-wave voltage of a phase modulator, which is characterized in that a high-frequency periodic square wave electric signal is loaded to a second phase modulator through a signal generator, and the phase drift amount caused by unstable factors such as a light source, an optical device and an external environment can be regarded as perturbation in a small time period; the half-wave voltage of the second phase modulator is obtained by accurately calculating the variable quantity of the number of the peak (valley) values of the sine (cosine) waveform, so that the judgment on the light intensity extreme point of an interference pattern is avoided, the measurement precision is improved, and the key core application in the fields of quantum communication and quantum calculation is realized.

The invention discloses a delay value determination method and system, a compensation method and system, an oscilloscope and a storage medium. The method comprises the steps that a control module obtains a first delay value corresponding to each to-be-calibrated channel; the control module obtains a second delay value between analog signals input by each analog channel at different gears to be calibrated and analog signals input relative to the analog channel at the reference gear; the control module determines a third delay value corresponding to each analog channel at each to-be-calibrated gear according to the second delay value and the first delay value; the control module obtains a corresponding fourth delay value of the reference channel at each to-be-calibrated gear; and the control module determines a fifth delay value corresponding to the reference channel at different gears to be calibrated according to the fourth delay value and the fifth delay value. According to the technical scheme, manual calculation and determination are not needed, the delay value determination precision is improved, the consumed time is shortened, and the labor cost is reduced.

The invention relates to a piezoelectric measuring device (100) comprising a sensor element (10) which generates a measurement signal (M) for a pressure to be measured, a conductor element (13) for deriving the measurement signal (M) to a data acquisition device (12), which data acquisition device (12) is configured to acquire and evaluate the derived measurement signal (M), wherein the sensor element (10) comprises an operational amplifier (20) which has an inverting input and an output, a feedback capacitor (22) which is arranged in parallel to the inverting input and output of the operational amplifier (20), and a reset switching element (27) arranged in parallel to the inverting input and output of the operational amplifier (20), wherein the data acquisition device (12) is further configured toto provide an electrical supply voltage (U) for the sensor element (10), wherein the data acquisition device (12) has a measurement cycle circuit (35) configured to switch on the electrical supply voltage (U) for the sensor element (10) before the start of a measurement cycle and to switch it off after completion of the measurement cycle; and that the sensor element (10) has a power-on reset logic (25, 26) configured to detect the presence of the electrical supply voltage (U) and, if the electrical supply voltage (U) is present before the start of a measurement cycle, closes and reopens the reset switching element (27).

The application discloses an optical multiplier system for processing high-speed data flow and a method thereof, and belongs to the technical field of semiconductors, comprising a stibonium quantum well laser, an intensity modulator, a phase modulator, a balanced homodyne detector and an oscilloscope; the stibonium quantum well laser is used as a light source, light signals output by the stibonium quantum well laser are evenly divided into two light beams by a Y-type beam splitter, and the two light beams are defined as x-vector light beams and y-vector light beams respectively; the two light beams sequentially pass through the intensity modulator and the phase modulator to complete real number and complex number coding; after the two light beams are coupled by a beam splitter / coupler, the two light beams are input to the balanced homodyne detector for detection, and the photocurrent output by the balanced homodyne detector is calculated to obtain a differential current, the differential current is collected and displayed in real time by the oscilloscope, and the differential current is the vector point multiplication operation result corresponding to the two vector light beams. The application has the characteristics of low cost, low energy consumption, high speed, expandability and the like.

The invention discloses a converter valve current waveform inversion method and apparatus, and an equipment medium. The method comprises the steps of obtaining a three-phase alternating current on a converter valve side; performing variational mode decomposition on the three-phase alternating current to obtain a plurality of mode components corresponding to each phase of alternating current; inputting a plurality of modal components of each phase of alternating current into a multi-branch MIMO network for current inversion to obtain a current waveform of each valve in the converter; the multi-branch MIMO network comprises a spatial feature extraction branch, a time sequence feature extraction branch and a first feature fusion module. The modal component of each phase of alternating current is input into the multi-branch MIMO network for current inversion, rich spatial feature information contained in the three-phase alternating current is considered, the time sequence features of the three-phase alternating current are also considered, the features of the three-phase alternating current are deeply excavated to obtain more accurate valve current waveforms, and the accuracy of valve current inversion is improved. Therefore, the operation state of the converter can be monitored more effectively.

The application discloses a non-intrusive load identification method and system, electronic equipment and storage medium, and relates to the technical field of non-intrusive load identification. The method comprises the following steps: calculating the amplitude spectrum and the phase spectrum of a to-be-identified load current waveform by using fast Fourier transform; calculating the Gram matrix of the to-be-identified load current waveform, the Gram matrix of the amplitude spectrum and the Gram matrix of the phase spectrum respectively; assigning the Gram matrix of the to-be-identified load current waveform, the Gram matrix of the amplitude spectrum and the Gram matrix of the phase spectrum to a B-channel pixel matrix, a G-channel pixel matrix and an R-channel pixel matrix respectively; combining the B-channel pixel matrix, the G-channel pixel matrix and the R-channel pixel matrix into a to-be-identified color image; inputting the to-be-identified color image into a load identification model, and identifying the load type corresponding to the to-be-identified color image by using the load identification model. The application can improve the accuracy and efficiency of non-intrusive load identification.

The invention relates to the technical field of modern electric power systems, and particularly discloses an electric power high-voltage data monitoring and waveform interactive analysis system, which comprises a data receiving layer, an event driving layer, a business processing layer and a front-end rendering layer, the data receiving layer is used for receiving the power high-voltage waveform data in real time and transmitting the power high-voltage waveform data to the event driving layer; the event driving layer is used for dispatching the electric power high-voltage waveform data and transmitting the dispatched electric power high-voltage waveform data to the business processing layer; the business processing layer is used for processing the scheduled power high-voltage waveform data and transmitting the processed power high-voltage waveform data to the front-end rendering layer and the time sequence database; and the front-end rendering layer is used for carrying out rendering optimization on the processed electric power high-voltage waveform data and returning a touch instruction to the business processing layer. According to the invention, the accuracy and real-time performance of power high-voltage monitoring can be greatly improved, and a convenient and powerful waveform analysis tool can be provided for power engineers.

The application provides a converter valve area short-circuit fault positioning method, device, equipment and medium, the method comprises the following steps: dividing the converter valve fault into eight typical valve area short-circuit faults; RTDS simulation analysis, according to the different converter protection action results, dividing into three types of protection actions, giving the typical fault characteristic quantity of the valve difference protection action for positioning the valve area fault and the eight typical valve area short-circuit quick criterion; according to whether the actual converter protection action occurs in the rectifying station or the inverting station, confirming the valve area short-circuit fault occurring station; according to the converter protection action event of the monitoring background, confirming the converter protection action type and the valve area fault converter bridge; calling the built-in fault recording of the DC control protection, analyzing the converter protection action waveform, analyzing the fault characteristics of the current waveform of the valve side of the converter bridge and the outlet current waveform of the DC side, positioning the valve area short-circuit fault point according to the typical fault characteristic quantity of the valve difference protection action and the eight typical valve area short-circuit quick criterion; and has the advantages of fast positioning speed and simple analysis method.

The invention discloses a method for acquiring frequency response data of a probe, an oscilloscope and a computer storage medium, and relates to the technical field of measurement. The method comprises the following steps: for each to-be-measured frequency point of a to-be-measured probe, when a measurement point is not connected with the to-be-measured probe, acquiring a first scattering parameter of a first signal transmission path between a first interface and the measurement point by using a network analyzer; acquiring an initial scattering parameter of a second signal transmission path between the measurement point and the terminal load through the second interface; determining a second scattering parameter of the second signal transmission path according to the initial scattering parameter; determining an equivalent clamp scattering parameter according to the first scattering parameter and the second scattering parameter; when the measuring point is connected with the probe to be measured, acquiring a total scattering parameter of a total signal transmission path between the first interface and the output end of the probe to be measured by using the network analyzer; and according to the total scattering parameter and the equivalent clamp scattering parameter, determining a scattering parameter of the to-be-detected probe, and according to the scattering parameter of the to-be-detected probe, determining frequency response data of the to-be-detected probe at the corresponding frequency point.

A test and measurement probe device is disclosed. In some implementations, the device may include one or more sensors. In addition, the device may include a plurality of analog signal paths, each analog signal path connected to one of the one or more sensors. The device may include an adjustable gain element within each analog signal path. Moreover, the device may include a combiner to combine the output of each adjustable gain element together to produce a probe output signal. Also, the device may include a digital path including a processor, where the processor is configured to compute a gain value for at least one adjustable gain element.

This invention discloses a remote monitoring and management method and system for photovoltaic desertification control based on edge-cloud collaboration, belonging to the field of desertification control management technology. The method includes the following steps: collecting the electric field intensity variation curve and the original waveform of current sampling around the photovoltaic array; aligning them on the same time coordinate; extracting the transient current spike fragments corresponding to the electric field intensity surge intervals to form an electric field disturbance correlation fragment sequence; based on the electric field disturbance correlation fragment sequence, calculating the synchronous transition rhythm between the spatial electric field intensity variation amplitude and the current transient spike amplitude; marking the current anomaly intervals with spatial electric field abrupt change characteristics; and generating an electric field coupling feature sequence. This invention distinguishes between environmental electric field disturbances and actual current anomalies by introducing the electric field coupling feature sequence and the gradual release observation interval, avoiding accidental triggering of load reduction by transient spikes; and smooths the power change process by releasing power limiting commands in stages and partitions, reducing frequency impact at the grid connection point and improving grid-connected operation stability.

The invention discloses an electromagnetic disturbance simulation test method, system, equipment and medium in an extreme multi-physical environment, and belongs to the technical field of electric power engineering and measurement testing, and the method comprises the steps: electrifying a test device, obtaining extreme multi-physical environment data, generating multiple groups of test conditions, and setting test points; setting the voltage of a high-voltage source, setting an acquisition mode and a trigger value of an oscilloscope, controlling the switching frequency of a pulse transmission line to be adjusted and applied to a to-be-detected electronic transformer, drawing an I-V curve of the electronic transformer according to an acquisition result, and combining the I-V curves of the electronic transformer under multiple groups of temperature and humidity conditions, and analyzing to obtain the failure voltage and the failure current of the electronic transformer. According to the method, the performance data of the electronic mutual inductor under different temperature and humidity conditions and electromagnetic disturbance environments are comprehensively and accurately collected, the data can be deeply analyzed through a scientific and reasonable data processing method and a strict failure judgment criterion, and the performance and reliability of electronic equipment are accurately evaluated.

The utility model relates to the technical field of device testing equipment, in particular to a power device testing device which comprises a temperature difference adjusting type testing assembly, the temperature difference adjusting type testing assembly comprises a vacuum cover, an oscilloscope and a detection body, the detection body is arranged in the vacuum cover, and the input end of the oscilloscope penetrates through the vacuum cover to be arranged above the detection body. An original structure is modified and replaced by a temperature difference adjusting type testing assembly, so that the problem that the whole tested part and a measuring probe are directly placed in a low-temperature box for testing in an existing low-temperature test, but the probe, especially a Rogowski coil probe, can generate a relatively large error at a low temperature is effectively solved.

The embodiment of the invention provides a power device test system and a power device test method, and the system comprises a double-pulse test board which is used for providing a double-pulse signal for a power device according to a first voltage, so as to enable the power device to execute the corresponding turn-off according to the double-pulse signal during the test; the first power supply is used for providing first voltage for the double-pulse test board; the second power supply is used for providing a second voltage for the power device; the oscilloscope is used for collecting operation data of the power device, generating a corresponding waveform according to the operation data and displaying the waveform; the controller is used for acquiring a configuration file and configuring the voltage value of the first power supply and the voltage value of the second power supply according to the configuration file; and configuring oscilloscope acquisition parameters according to the configuration file, and determining corresponding test parameters of the power device according to a waveform processing mode in the configuration file. Therefore, the power device is automatically tested, the time required by the test is shortened, and the test efficiency is improved.

To provide an inspection device that can improve the detection accuracy of a characteristic of an MRAM element.SOLUTION: An inspection device 1 includes: a stage 10 that has a magnetoresistive memory element fixed on a stage surface 13; a plurality of electromagnets 20 that generate a first magnetic field in which a direction of a magnetic field component in a vertical direction perpendicular to the stage surface 13 changes from a first direction to a second direction depending on a position on the stage surface 13 and a second magnetic field in which a direction of the magnetic field component in an in-plane direction parallel to the stage surface 13 changes from a third direction to a fourth direction depending on the position on the stage surface 13; an optical system 30 that irradiates the magnetoresistive memory element with illumination light including polarized light and condenses reflection light of the illumination light reflected by the magnetoresistive memory element; and a detector 40 that detects the reflection light in a case where a position of the magnetoresistive memory element in the first magnetic field is changed and the reflection light in a case where the position of the magnetoresistive memory element in the second magnetic field is changed.SELECTED DRAWING: Figure 1