26results about "Digital variable/waveform display" patented technology

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 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.

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.

A test and / or measurement system comprising a test and / or measurement device is described. The test and / or measurement device includes a first measurement module, which is configured to digitize a first measurement signal, thereby obtaining a first digital measurement signal. The test and / or measurement device further comprises a signal processing module (24), which includes a mean value detector module (66), an RMS detector module (68), and a variance detector module (70). The mean value detector module (66) is configured to average a first digital baseband signal over a detector interval of the mean value detector module (66), thereby obtaining a first detector signal. The RMS detector module (68) is configured to determine an RMS value of the first digital baseband signal over a detector interval of the RMS detector module (68), thereby obtaining a second detector signal.The variance detector module (70) is configured to determine at least one variance parameter of the first digital baseband signal based on the first detector signal and the second detector signal, wherein the at least one variance parameter is a measure of the deviation of the first digital baseband signal from its mean value. Furthermore, a measurement procedure is described.

This invention discloses a method and system for identifying permanent faults in ultra-high voltage (UHV) AC transmission lines, comprising: acquiring fault waveform data of the instantaneous three-phase voltage values ​​after a fault in an UHV transmission line with shunt reactors, and determining the two faulty phases experiencing interphase faults based on the fault waveform data; calculating the interphase differential mode voltage between the two faulty phases based on the fault waveform data; taking the extinction of the arc at the fault point after the circuit breaker trips as the starting time, performing sliding window integration on the interphase differential mode voltage according to a preset time window to obtain the integrated value of the interphase differential mode voltage; within a preset time window, if the integrated value of the interphase differential mode voltage is continuously less than a preset integration threshold, or simultaneously satisfies the condition that the integrated value of the interphase differential mode voltage is greater than the preset integration threshold but the number of sampling points is continuously less than a preset number, then a permanent fault is determined to have occurred. The method of this invention can be applied to fault type analysis of UHV transmission lines and provides scheduling and operation decisions for maintenance personnel.

Methods and systems for real-time power outage visualization and risk prediction include a server that detects an operational status of sensor devices connected to an electrical grid and assigns each sensor device to a group based upon the operational status and a geographic location of the sensor device. The server determines a power outage event for at least one group based upon the operational status of sensor devices and identifies a geographic area experiencing the power outage event based upon the geographic locations of the sensor devices. The server generates a visual representation of the power outage event on a map, transmits a power outage alert notification to remote computing devices associated with the geographic area experiencing the power outage event, and transmits a power outage risk notification to remote computing devices associated with a geographic area adjacent to the geographic area experiencing the power outage event.

A signal processing circuit includes a first signal processing channel and a second signal processing channel. The first signal processing channel includes an ADC. The first ADC is configured to digitize an RF signal, thereby obtaining a first digitized RF signal. The second signal processing channel includes a second ADC. The second ADC is configured to digitize the RF signal, thereby obtaining a second digitized RF signal. A clock distribution circuit is configured to forward a first clock signal to the first ADC and to forward a second clock signal to the second ADC. An averaging circuit is connected to both the first signal processing channel and the second signal processing channel. The averaging circuit is configured to determine a combined average of the first digitized RF signal and of a complex conjugate of the second digitized RF signal, thereby obtaining a complex-valued average signal.

The application discloses a device and method for determining a target waveform based on FPGA, and the method comprises the following steps: obtaining initial parallel data corresponding to a target FPGA; performing trigger processing on the initial parallel data to obtain a first trigger address count value and a first trigger compensation value; determining an initial trigger address according to the first trigger address count value and the first trigger compensation value; processing the initial parallel data according to the initial trigger address to obtain candidate data; performing trigger processing on the candidate data to obtain a second trigger address count value and a second trigger compensation value, and determining a target trigger address according to the second trigger address count value and the second trigger compensation value; determining target parallel data according to the target trigger address and the initial parallel data, and outputting the target parallel data in a waveform form to obtain a target waveform. The application realizes accurate positioning of the target trigger address.

A measurement system includes a test instrument, a monitoring circuit, a dispatching circuit, and an electronic device. The test instrument includes a testing circuit configured to conduct measurements on a measurement signal received from a device under test and / or to generate a test signal for the device under test. The monitoring circuit is configured to monitor a status of the at least one test instrument, wherein the status is associated with a measurement being performed on the device under test. The monitoring circuit is configured to generate an alert signal if a status change of the at least one test instrument requiring an external action is detected. The dispatching circuit is configured to transmit the alert signal to the electronic device. The electronic device can be established separately from the test instrument. Further, a test instrument is described.

The application provides a power distribution box switch cabinet fault detection method based on current effective value and waveform distortion, acquires effective value and distortion rate sequence by synchronously collecting current data in combination with signal processing, and extracts phase difference and amplitude ratio data through correlation analysis, so as to accurately classify the abnormal type as line fault or poor contact; meanwhile, the application constructs a danger level matrix through feature fusion, judges a fault evolution path by using time sequence analysis, dynamically optimizes correlation model parameters, realizes real-time monitoring and early warning on subsequent data, generates an alarm signal and locates a potential fault type when the distortion rate continuously exceeds a threshold value.

The application discloses an information display method of an oscilloscope host computer, and the method comprises the following steps: displaying a flow navigation area and a function operation area on a preset page; the flow navigation area comprises an original signal window, an operation processing window and a result signal window which have a guiding relationship; if a signal input instruction triggered based on a target channel control in multiple channel controls is detected, displaying the signal identification of the original signal corresponding to the signal input instruction in the original signal window; if an operation confirmation instruction triggered based on a target operation control in multiple operation controls is detected, displaying the operation identification of the target operation control in the operation processing window; if an operation execution instruction triggered based on an execution control is detected, displaying the storage identification of the result signal in the result signal window and storing the result signal; the correlation of the flow navigation area and the synchronous display and reinforcement function are associated and displayed, so that the user understanding and operation threshold are reduced, and the new user's learning speed is improved.

The utility model belongs to rail transit technical field, disclose wireless rail line ground short circuit testing arrangement, including parallelly arranged direct current line and walking rail, and the line is connected with the positive bus through the power supply line, is equipped with high voltage circuit breaker on the power supply line, and the direct current line is connected through the short circuit line with walking rail, is equipped with direct current grounding circuit breaker on the short circuit line, still include high voltage circuit breaker wireless controller unit, direct current grounding circuit breaker wireless controller unit, wireless remote control controller unit, hall sensor, portable wave recording appearance and power module, the utility model's beneficial effect is, realizes the remote control of high voltage circuit breaker and direct current grounding circuit breaker through wireless remote control controller unit, improves security and efficiency, gathers data through hall sensor and portable wave recording appearance, provides reliable data support, carries out the power supply through power module, provides stable power supply.

The present application belongs to the technical field of pipeline current mapping, and particularly relates to a burst buried pipeline current mapping excitation system. The excitation system designs a new pipeline current mapping excitation circuit, realizes the alternate excitation of forward / reverse excitation current of the buried pipeline, and provides necessary technical support for fully exciting the magnetization of the large buried depth pipeline. The burst buried pipeline current mapping excitation system comprises a DCDC boost module, a first energy storage capacitor, a second energy storage capacitor, a relay switching module and a signal acquisition and conditioning module. The DCDC boost module is used for providing charging electric energy; the first energy storage capacitor and the second energy storage capacitor are respectively used for providing forward / reverse excitation; the relay switching module is used for switching the excitation mode of the first energy storage capacitor and the second energy storage capacitor; and the signal acquisition and conditioning module is used for collecting and monitoring the voltage analog data of the first energy storage capacitor and the second energy storage capacitor and the current analog data of the excitation current in the excitation process.

This application discloses a portable phase detection and adjustment device, relating to the field of electronic measurement technology. The system includes: a portable carrying case with multiple low-voltage measuring heads; a rectifier cabinet with R-phase lines, S-phase lines, and T-phase lines; an oscilloscope with a first oscilloscope channel, a second oscilloscope channel, a third oscilloscope channel, and a fourth oscilloscope channel, wherein the first and second oscilloscope channels are connected to different low-voltage measuring heads, the third oscilloscope channel is connected to the R-phase lines, S-phase lines, and T-phase lines of the rectifier cabinet, and the fourth oscilloscope channel is connected to the R-phase lines, S-phase lines, and T-phase lines of the rectifier cabinet; and a control board with a first comparator, a second comparator, and a processor, wherein the input terminals of the first comparator are connected to the first and third oscilloscope channels respectively; the input terminals of the second comparator are connected to the second and fourth oscilloscope channels respectively; and the processor is connected to the output terminals of the first and second comparators respectively.

This invention relates to the field of access control and security monitoring technology, and discloses a method and device for real-time status monitoring of electromagnetic locks supporting three-wire control. The method includes acquiring electromagnetic lock current waveform segments and dry node status data streams, fusing them to form an original signal sequence; performing spectral analysis on the original signal sequence to obtain the frequency distribution characteristics of transient oscillations and steady-state noise; determining the dynamic transition process based on the transient oscillation amplitude, and obtaining the start and end points of multi-stage features; decomposing the steady-state noise frequency distribution characteristics to obtain the time-frequency domain sub-band energy distribution of the noise; determining the interference type based on the time-frequency domain sub-band energy distribution; comparing the interference type with a preset transient interference spectrum pattern library, filtering the original signal sequence to obtain a purified status signal; extracting time-frequency domain features from the purified status signal to obtain real-time spectrum data, and outputting the real-time status monitoring result of the electromagnetic lock. This method can enhance the anti-interference capability of status monitoring.

This disclosure relates to a method, apparatus, storage medium, program product, and system for determining air conditioner power consumption. The method for determining air conditioner power consumption can determine the corrected target current corresponding to each sampling period through preset current correction relationship data. The preset current correction relationship data includes the correspondence between different outdoor unit operating currents and corrected currents at different operating frequencies. The power consumption of the air conditioner is determined based on the target current of each sampling period. In this way, determining the power consumption based on the corrected target current can effectively improve the accuracy of obtaining the power consumption of the air conditioner's outdoor unit, thereby improving the accuracy of obtaining the overall power consumption of the air conditioner.

The application relates to a measurement data synchronous processing method, device and equipment of a tower grounding device, which comprises the following steps: inputting an M-component current of a lightning current waveform into a calculation model to obtain a second ground potential rise waveform, comparing a first ground potential rise waveform with the second ground potential rise waveform, and moving the lightning current waveform according to a translation time and a translation direction, so that the voltage waveform and the current waveform measured by the tower grounding device are synchronous, the time-varying characteristics of the impulse grounding impedance of the tower grounding device can be accurately understood, and the analysis level of the tower grounding device of a power transmission line is improved. The problem that the voltage waveform and the current waveform obtained by the existing artificial lightning measurement of the tower grounding device are not synchronous and the time-varying characteristics of the impulse grounding impedance of the tower grounding device cannot be accurately understood is solved.

The present invention relates to the field of power systems and automation. Disclosed in the present invention are a power transmission line hazard discharge identification method, and a system. The method comprises: acquiring power transmission line hazard discharge measured data, acquiring and processing power transmission line hazard high-frequency discharge waveform data, and acquiring and processing power transmission line hazard discharge event data; establishing and initializing a hazard identification requirements table, and updating all elements in the table in chronological order; and for each collected new waveform segment, looking up the table to determine a maintenance requirement level corresponding to a newly collected discharge waveform, and performing line hazard state comprehensive determination and early warning. In the present invention, development processes of power transmission line hazards, particularly nonlinearly-developing insulation degradation and suspended foreign objects, are fully taken into account. Compared with existing methods, the present invention is suitable for guiding line maintenance. The identification method provided by the present invention has a simple and clear implementation process, and compared with methods using deep learning and the like, has lower data volume requirements, lower hardware computing power requirements and a wider application range.

The application discloses a transformer partial discharge identification method, device and equipment. First, a three-dimensional digital twin model of the target transformer is constructed, and time synchronization processing is performed on the model to obtain a time compensation parameter. Then, the model and the time compensation parameter are used to perform RTM coarse positioning on the sound pressure signals received by each AE sensor, so that the search area of the partial discharge source is determined. In the determined PD source search area, multiple reference sources are selected. Then, with the aid of the pre-constructed PINN, the reference sources are iteratively positioned and signal analyzed to obtain the position of the PD source and the corresponding discharge waveform characteristics. Finally, based on the extracted waveform characteristics, the discharge category is identified, and the PD source position is associated with the corresponding discharge category and output. The application can break through the small sample dependence, realize high-precision monitoring of the transformer partial discharge, and adapt to the transformer operating environment under different working conditions.

This invention discloses a high-speed optical reservoir computing system and testing method for time-series signal processing, belonging to the field of optical reservoir computing technology. The method includes the following steps: filtering and denoising the dataset using a computer, signal normalization, feature enhancement, time window extraction, data segmentation, and data balancing; importing the processed data into an arbitrary waveform generator; the signal from the arbitrary waveform generator is led out by wires, passes through a T-bias, and is input into the saturable absorption region through a GSG probe; the pulse signal is then amplified through the gain region; the output surface of the gain region is connected to a photodetector via fiber optic coupling, converting the optical signal into an electrical signal which is then imported into an oscilloscope; and the output weight matrix between the output vector and the corresponding label vectors of the input vector is fitted using linear regression methods such as ridge regression. This invention enables ultra-high-speed processing of large-volume time-series signals, such as electrocardiogram signals, significantly reducing the energy consumption of existing processing systems and increasing processing speed.