82 results about "Active measurement" patented technology

The invention discloses a safety control method and system for an emerging control main body, and belongs to the technical field of power system active control, and the method comprises the steps: carrying out the bidirectional data interaction through a master station AGC and a field station AGC, and carrying out the bidirectional data interaction based on a bidirectional data interaction result and a cooperative anti-error parameter; whether the emerging control main body is in a controllable state or not is judged in real time through collaborative security locking logic; if the control main body is in the controllable state, active measurement data of the emerging control main body are obtained, and jump detection and multi-source checking are carried out on the active measurement data; after verification is passed, a pre-control instruction is generated based on the control strategy, and reasonability verification and control effect simulation verification are carried out; and after the control effect simulation verification is passed, the pre-control instruction is taken as a final control instruction to be issued to the emerging control main body for execution. The method can greatly improve the safety control capability of AGC on an emerging control main body, guarantees the frequency operation safety of a power grid, and improves the safe and reliable power supply capability of the power grid.

The invention discloses an insulation monitoring method and system for a high-low voltage switch cabinet, and belongs to the technical field of electrical monitoring and insulation diagnosis, and the method comprises the steps of continuous monitoring, trigger type active measurement, feature extraction, intelligent diagnosis, uncertainty adaptive measurement and the like. According to the invention, the graph neural network and the deep learning model are adopted, and deep fusion and intelligent diagnosis can be carried out on multi-dimensional parameters. By comparing the confidence coefficient with a threshold value, the system can dynamically adjust measurement parameters and update the model by using a final judgment result to realize closed-loop adaptive optimization. According to the method, a high-confidence diagnosis conclusion can be obtained, accurate fault positioning is carried out, and the reliability and efficiency of insulation monitoring of the high-low voltage switch cabinet are remarkably improved.

In one implementation, a device may obtain a Simple Two-way Active Measurement Protocol test packet that includes hop-by-hop data collected by the Simple Two-way Active Measurement Protocol test packet along its path. The device may determine whether the Simple Two-way Active Measurement Protocol test packet includes an instruction to reflect the hop-by-hop data back to an originating session sender. The device may copy, based on a determination that the Simple Two-way Active Measurement Protocol test packet includes the instruction, the hop-by-hop data into a type-length-value segment of a reply Simple Two-way Active Measurement Protocol test packet. The device may transmit the reply Simple Two-way Active Measurement Protocol test packet back to the originating session sender.

A pipe ring flatness measurement method based on a total station specifically relates to the field of pipe ring flatness measurement, and the scheme comprises the following steps: collecting a three-dimensional coordinate point cloud of a pipe ring end face through the total station, dividing the pipe ring end face into measurement areas according to segment partitions, carrying out iterative sampling on the three-dimensional coordinate point cloud of a single observation station by adopting an RANSAC algorithm, screening effective measurement points, and obtaining the flatness of the pipe ring. Calculating a reference surface distance and a residual standard deviation, taking the number of the effective points of each observation station as a weight to obtain a global reference surface distance and a fusion residual standard deviation, dynamically adjusting an initial screening threshold, re-screening the effective measurement points according to the adjusted screening threshold and an RANSAC algorithm to obtain the number of the adjusted effective points, and calculating the total reference surface distance and the fusion residual standard deviation. According to the method, a complete closed loop is formed through data screening, reference fitting, multi-station fusion, quality evaluation and threshold optimization, so that the stability, interference resistance and working condition adaptation accuracy of flatness measurement are improved.

The invention relates to the technical field of digital information transmission, and discloses an aircraft multi-network fusion data real-time transmission and distribution system which comprises a physical layer state monitoring module, a transmission quality deduction engine, a deduction routing engine and a mapping model calibration module. Deducing a transmission quality index based on the transmission layer-physical layer mapping model so as to guide a routing engine to distribute data packets; meanwhile, the calibration module utilizes actual transmission layer feedback of a data packet to dynamically correct the mapping model, active measurement is replaced by passive deduction, information lag and resource occupation are avoided, and the problem of drifting failure of a deduction model in a complex environment is solved by introducing a self-calibration closed loop.

The invention discloses a portable distance measurement method and system for engineering measurement. The method comprises the following steps: acquiring a distance measurement point of a target object in engineering measurement and attitude parameters of measurement equipment by using the measurement equipment; processing the distance measurement points by using a density clustering algorithm to obtain effective measurement points, and marking the effective measurement points to obtain a distance measurement node sequence; the Euclidean distance between adjacent effective measurement points in the ranging node sequence is calculated, a ranging chain branch is constructed, and when a directional included angle between the adjacent effective measurement points meets a first spatial constraint condition, the ranging chain branch is adjusted to obtain a continuous ranging chain; and obtaining an abnormal node segment based on the curvature variation of the adjacent effective measurement points in the continuous ranging chain, obtaining a compensation ranging value of the abnormal node segment and a basic ranging value of a non-abnormal node segment, and obtaining a target ranging value. According to the method, the actual condition of a measurement scene is reflected more comprehensively, and various challenges in a complex measurement environment can be better adapted.

The invention relates to the technical field of measurement path planning, and provides a three-coordinate measuring machine measurement path optimization method based on digital twinning and related equipment. The method comprises the following steps: establishing a digital twinborn model of a measured part and a three-coordinate measuring machine; in the digital twinborn model, classifying measurement areas according to the measurement precision of the measured part to obtain a plurality of area types; obtaining an initial measurement viewpoint set, and screening from the initial measurement viewpoint set according to the region type to obtain an effective measurement viewpoint set; based on the effective measurement viewpoint set, solving an initial measurement path of the three-coordinate measuring machine by using an ant colony algorithm and taking a path distance, a measurement precision standard-reaching rate and motion energy consumption as optimization targets; and optimizing the initial measurement path according to the actual motion parameters of the measuring head of the three-coordinate measuring machine to obtain an optimized measurement path. According to the method, the viewpoint screening period can be shortened, the viewpoint screening efficiency is improved, the path planning efficiency is further improved, and the real-time measurement requirement is met.

The invention discloses a short circuit parameter measurement and analysis method, system, equipment and medium, and relates to the technical field of power system detection, and the method comprises the steps: carrying out the synchronous sampling of a voltage signal and a current signal in a detected line, carrying out the conditioning and conversion of an obtained sampling signal, and generating an original digital quantity; calibrating the original digital quantity to obtain calibrated effective measurement data; short-circuit parameters are calculated based on the effective measurement data, the short-circuit parameters comprise short-circuit current, short-circuit impedance and short-circuit power, and the calculation process comprises fundamental wave extraction and phasor analysis; visually displaying the calculated short-circuit parameters, and generating report data containing a measurement result according to user operation; and in the measurement process, the running state is dynamically adjusted according to the current task type and the energy consumption state. According to the invention, the authenticity of measured data is improved through synchronous sampling and conditioning conversion of voltage and current signals in combination with a multi-dimensional calibration strategy.

The invention discloses a structured light single-frame reconstruction method based on layered stereo matching. A structured light active measurement system is regarded as a binocular passive measurement system, random speckles are adopted as projection patterns, a single-frame depth estimation model is provided based on the stereo matching principle, and the single-frame depth estimation model mainly comprises a depth initialization module, a depth updating module and a depth refinement module. Compared with a traditional structured light three-dimensional reconstruction algorithm, the method has the advantages that three-dimensional reconstruction of an object can be completed only through a single-frame image, and the method has higher dynamics; compared with other deep learning based on a phase shift method, the method does not need to solve three-dimensional data through intermediate variables such as a wrapped phase and an absolute phase, and avoids the influence of an accumulation error on a final result. In addition, system calibration parameters are used as a priori construction model, and a simulation data set is adopted to assist training, so that the model has higher generalization performance.

The invention, which relates to the technical field of new energy power generation and power grid dispatching, discloses a climbing reserve demand evaluation method, system and device considering new energy power generation random fluctuation, and a storage medium, comprising the steps of collecting a historical active measurement time sequence of a new energy station, and performing preprocessing; grouping the preprocessed active measurement time sequence according to time granularity duration, and calculating a power characteristic index based on each group of data; on the basis of the power characteristic indexes and according to a preset power division rule, dividing the new energy power generation power into power intervals, and obtaining a mapping relation between the time granularity and the power intervals; generating a reserve capacity demand duration curve and a required reserve capacity value based on the reserve capacity demand of the power interval section, and generating a climbing rate demand duration curve and a required climbing rate value based on the climbing rate of the power interval section; and resetting the time granularity duration, and updating the required standby capacity and the climbing requirement. The new energy power generation adjusting capacity is improved.

The invention provides a multi-radar information fusion measurement method for multiplex rocket suspension recovery, which comprises the following steps: acquiring a distance measurement value of the surface of a rocket through a plurality of millimeter-wave radars arranged on a rocket recovery device, and screening out effective measurement points based on a preset effectiveness threshold value; based on the screened effective measurement points, solving an initial estimation value of a circle center position by using circular geometric constraints of the cross section of the rocket; and constructing a state vector containing the center position and the motion state of the rocket, and performing multi-frame data fusion on the initial estimation value by using a Kalman filtering algorithm to obtain the optimal estimation of the center position after smoothing. According to the method, effective data of multiple radars are fused, geometric constraints of the cross section of the rocket are introduced to carry out space domain circle fitting, and dynamic smoothing and tracking are carried out in a time domain in combination with Kalman filtering, so that the purpose of improving the measurement accuracy of the landing pose of the rocket is achieved.

An apparatus, comprising: at least one processor; and at least one memory storing instructions that when executed by the at least one processor cause the apparatus at least to perform: receiving, at a user equipment from a network node, a measurement validity configuration specifying radio interface measurement characteristics required to be met by the user equipment to obtain valid measurements; and determining, at the user equipment, whether radio interface measurements made by the user equipment meet the measurement validity configuration and, if so, providing an indication to the network node that valid measurements have been obtained.

The present invention relates to the field of radio frequency measurement technology, and discloses a broadband pulse measurement method based on a vector network analyzer. Aiming at the problem that the device under test cannot withstand long-term high-power signals, a special measurement scheme is designed for the vector network analyzer. The radio frequency source signal is modulated by a pulse switch, and the signal is down-converted to an intermediate frequency after passing through the device under test, and the intermediate frequency is then pulse modulated and filtered. A pulse modulation source is designed for radio frequency and intermediate frequency signal modulation and reception sampling synchronization to ensure that the sampling bandwidth is within the positive pulse width of the pulse period. When sampling, a reference pulse rising edge is introduced to trigger the digital down-conversion working state. After software delay, sampling is performed to achieve synchronization between sampling and intermediate frequency signal, and the results are accurate, stable and fast. In addition, in order to achieve distortion of the intermediate frequency signal link after radio frequency modulation, a modulation signal is introduced to further modulate and improve it. This scheme can effectively measure the amplitude-frequency characteristics, phase and other characteristics of the device under test.

The invention discloses a cuff-free blood pressure continuous monitoring method and system based on a light guide film, multiband reflected light signals of fingertip skin are collected through the light guide film attached to a terminal screen, the light guide film realizes directional light guide and stray light filtering through a micro-nano grating array, the light guide film is aligned with screen pixel hardware, and the light guide film is connected with the terminal screen. And the signal to noise is obviously improved compared with a common camera scheme. According to the method, multi-dimensional features such as time difference, rise time and enhancement index between dual-band pulse wave crests are extracted, and systolic pressure and diastolic pressure are calculated in combination with a user personalized baseline model. The system supports dual modes of active measurement and night passive monitoring, motion artifacts are eliminated through an acceleration sensor, ambient light interference is inhibited through an ambient light sensor, and one-machine multi-person exclusive monitoring, local encrypted data storage and user autonomous management are realized through linkage with an applicant spectrum identity recognition patent. The blood pressure monitoring device does not need cuff inflation, does not need electrocardio reference, is free of oppression, can realize non-perception continuous blood pressure monitoring when a user uses a mobile phone daily, and has the advantages of being non-invasive, continuous, low in cost, high in precision and safe in privacy.

The invention belongs to the technical field of high-precision morphology measurement, and discloses an automatic refocusing large-measurement-range nano-morphology measurement method, which comprises the following steps of: 1, acquiring a spectral interference signal of a sample by using an OCT (Optical Coherence Tomography) system, and performing one-dimensional inverse Fourier transform on the signal in a wavenumber domain to obtain an airspace complex amplitude signal; step 2, selecting a surface complex amplitude signal according to the maximum signal intensity based on the airspace complex amplitude signal; step 3, calculating average low-frequency intensity based on the surface complex amplitude signal to obtain an actual defocusing distance; 4, performing refocusing calculation based on the surface complex amplitude signal and the actual out-of-focus distance to obtain a refocusing surface signal; and step 5, based on the refocusing surface signal, calculating and outputting a morphology height difference. According to the method, the effective measurement range of OCT nano-morphology detection can be expanded, the morphology detection capability of a non-flat surface is optimized, side lobe artifacts caused by defocusing are inhibited, the method is realized based on numerical calculation, and the system complexity and cost are reduced.

The invention discloses a method for measuring intraoperative radiotherapy Intrabeam water absorbed dose based on air kerma. The method comprises the following steps: characterizing a spectrum; a radiation substance matched with or close to the spectrum is selected, and the energy spectrum of the radiation substance is represented; acquiring measurement parameters of the air kerma rate; calculating a first correction factor by adopting a Monte Carlo method; calculating a second correction factor based on ionization chamber rod scattering; creating a conversion factor from air kerma energy to 1cm water absorbed dose at the measurement point; and calculating the water absorption dose rate at the position of 1cm. The active measurement method is adopted, the ionization chamber is used for measuring the absorbed dose of the rays generated by the spherical source applicator in water, namely the measured value is the absorbed dose at the position of 1 cm in water, the advantages of being easy to operate and short in measurement time are achieved, real-time reading can be achieved, and waiting is not needed.

An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least: receive, at the user equipment, a measurement validity configuration from a network node, the measurement validity configuration specifying a radio interface measurement characteristic that needs to be satisfied by the user equipment to obtain a valid measurement; and determining, at the user equipment, whether a radio interface measurement by the user equipment satisfies the measurement validity configuration, and if so, providing an indication to the network node that a valid measurement has been obtained.

Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) receives a positioning reference signal (PRS) configuration comprising at least a PRS period defining repetition of one or more PRS resources associated with at least a first transmission reception point (TRP), receives a measurement gap configuration comprising at least a measurement gap repetition period (MGRP) defining repetition of a measurement gap, and performs one or more positioning measurements of the one or more PRS resources during one or more repetitions of a measurement period, the one or more repetitions of the measurement period having an effective measurement period, the effective measurement period based on an alignment period and a time period T in which the UE can process a duration N of PRS symbols, the alignment period based on the PRS period and the MGRP.

The invention relates to the technical field of power system parameter measurement, and discloses a power grid broadband impedance measurement method, which comprises the following steps of: dividing a target broadband into three complementary or staggered frequency groups, and alternately injecting multi-frequency harmonic current disturbance signals into a three-phase power grid in a cyclic rotation mode, acquiring a node response voltage signal of the three-phase common coupling point and a network side branch disturbance current signal; and frequency spectrum components of voltage and current signals are extracted from the node response voltage signal of the three-phase common coupling point and the network side branch disturbance current signal by adopting a fast Fourier transform method, and node impedance information of the power grid is calculated based on the frequency spectrum components of the voltage and current signals. The power grid impedance is effectively measured, the influence of the frequency response overlapping effect in the impedance measurement process is eliminated, and the measurement speed and precision are improved.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The method may be performed by a UE. In certain configurations, the UE receives, from a base station, a triggering command for a target cell related to a radio research management (RRM) procedure. The UE determines whether a report for a valid measurement has been transmitted within a predetermined period of time before receiving the triggering command. In response to determining that the report has not been transmitted, the UE transmits, to the base station, the report for the valid measurement of the RRM procedure to shorten a delay of the RRM procedure.

The invention provides an automatic testing method, device and system based on a trusted platform module, and belongs to the technical field of computers. The method comprises the following steps: controlling a universal computing platform to send a first one-way communication instruction to an equipment mainboard, controlling a storage module read-write control unit of the equipment mainboard to respond to the first one-way communication instruction, and controlling a storage module of the equipment mainboard to communicate with an emulator; controlling the universal computing platform to send a program burning instruction to the simulator, wherein the program burning instruction comprises a starting program; the emulator is controlled to respond to the program burning instruction, and the starting program is written into a storage module on the equipment mainboard; and controlling the universal computing platform to send an automatic test instruction to the trusted security chip of the equipment mainboard, and performing automatic test on the startup program in response to the automatic test instruction by the trusted security chip. The method is used for solving the problem that an existing testing method of the active measurement function based on the trusted platform module is high in manpower and time cost.

The invention discloses an unmanned aerial vehicle photoelectric target passive positioning method, and the method comprises the steps: carrying out the recognition, identification and target pixel offset calculation of a target through image detection and recognition equipment, and outputting a target identifier, the pixel offset and target imaging time; resolving the target sight line space angle according to the target imaging time; according to the height from the unmanned aerial vehicle to the relative target and the target sight line space angle, the actual offset distance of the target in the real physical space about the image center point is calculated; and according to the current latitude and longitude coordinates of the unmanned aerial vehicle, the physical distance from the target to the projection center and the target sight line space angle information, dynamically obtaining the latitude and longitude fusion coordinate value of the target in real time. Based on the principle of triangular mapping, the geographic coordinates of the target are solved by constructing the ray equation, accurate positioning of the target is achieved, and compared with a target positioning technology of a traditional algorithm, the method has the outstanding advantages of being low in cost, high in precision, high in concealment (passive measurement), simple in equipment, small in size and power consumption requirement and the like. And an effective measurement means is provided for the unmanned aerial vehicle to realize a target positioning task.

The present invention provides a multi-step online active measurement and grinding method and device based on a numerical control system, specifically: S1, measuring a standard workpiece, calculating and storing calibration data; S2, performing a standard part zeroing operation on the standard workpiece, obtaining and storing standard part zeroing data; S3, transmitting the obtained calibration data and standard part zeroing data to the numerical control system; S4, setting a grinding allowance value of a workpiece to be processed; S5, using the calibration data and the standard part zeroing data, determining the corresponding relationship between the set grinding allowance and the AD value; S6, obtaining the AD value in real time during the processing process, and judging whether the real-time grinding allowance value reaches the set value according to the corresponding relationship in step S5, if so, ending the current stage of grinding and entering the next stage of grinding until all steps are ground; S7, measuring the processed sample, and compensating and fine-tuning the processing size of each step; one measuring instrument probe can complete the online active measurement and grinding of multiple steps.

The invention discloses a method, a device and equipment for safely starting an embedded handheld terminal and a medium, and belongs to the field of embedded handheld terminal safety. According to the invention, an active defense mode is adopted to protect self safety, a safe operation environment is established, active measurement of software and hardware is implemented, software and hardware safety management and control based on endogenous safety are realized, and the safety and reliability of the embedded handheld terminal are remarkably improved. Compared with a traditional scheme, the method has higher safety and lower implementation complexity.

This application provides a pairing and screening method for ultrasonic transducers. A first ultrasonic transducer is placed on the first side of a test cavity, and a second ultrasonic transducer is placed on the second side of the test cavity. The resonant frequencies of the first and second ultrasonic transducers are tested using a frequency sweep method. Multiple test frequencies are selected based on the resonant frequencies. The first and second ultrasonic transducers are used interchangeably to emit ultrasonic waves at the multiple test frequencies, and multiple receiving frequencies and corresponding receiving amplitudes are received respectively. This allows for the determination of successful pairing between the first and second ultrasonic transducers. This application can effectively measure the entire process from transmission to reception through resonant approximation parameter measurement, thereby evaluating the pairing quality of the ultrasonic transducers.

The invention discloses a pulsating pressure wave number-frequency spectrum two-dimensional surface array data processing method, which is based on concepts such as a cross-spectrum matrix and a position difference vector, obtains a corresponding discrete area by defining a plurality of key sets related to a two-dimensional surface array and applying a Worronoi diagram method, and finally obtains the pulsating pressure wave number-frequency spectrum two-dimensional surface array data. And a two-dimensional wave number-frequency spectrum is obtained through a multiplication method. On one hand, the method can adapt to all types of two-dimensional surface array forms, the problem of applicability limitation of a traditional method is thoroughly solved, meanwhile, an analysis result directly corresponds to a TBL pulse pressure wave number-frequency spectrum, and effective measurement of real physical quantities is achieved; and on the other hand, by introducing a parallel computing architecture, the data computing time consumption can be remarkably shortened, the processing efficiency is greatly improved, the universality and high efficiency of two-dimensional pulsating pressure wave number-frequency spectrum data processing are considered, and a better support is provided for engineering landing of related technologies.

Methods, systems, and devices for wireless communications are described in which a user equipment may be configured with measurement resources that may be measured and processed based on resource occasion grouping of at least one measurement resource associated with a measurement report. An active measurement duration may be defined to span from a first symbol of a paired resource occasion group to a last symbol of the paired resource OG, plus a duration of one or more symbols. A UE may monitor and measure one or more measurement resources, and transmit a measurement report in accordance with corresponding measurements in an associated active one or more measurement resources.

The invention discloses a rapid plastometer precision measurement method based on edge calculation. The method comprises the following steps: collecting measurement data, transmitting the measurement data to an edge calculation node, and preprocessing the measurement data; performing dynamic feature extraction and parameter identification to form a real-time measurement feature value; performing error compensation and temperature drift correction by using the improved DESN model to generate a corrected feature vector; utilizing a data consistency test method to obtain an effective measurement data set; performing multi-source measurement data fusion to obtain a fusion processing result data set; calculating a measurement deviation index and outputting a correction result; generating loading response information according to the execution state of the loading control unit and the returned measurement data; and the updated improved DESN model is obtained, real-time processing, error suppression and high-precision feature recognition of the measurement of the plastometer are realized, and the data reliability and the measurement stability are improved.

The first device can periodically provide a message request for measuring network performance to neighboring devices in a network with the first device throughout a test session. The neighboring devices, upon receiving the request message, will determine a network performance indicator (NPI) value using a relay mechanism. The first device can periodically receive a response message including the NPI value from the neighboring devices and throughout the test session. The first device can determine an additional NPI value that measures network performance between the first device and the neighboring devices. The first device can determine an overall NPI value based on the NPI value and the additional NPI value. The first device can identify a preferred next hop to one of the neighboring devices based on the overall NPI value, where the preferred next hop is part of a preferred path through the network.

The application discloses a kind of target space displacement monitoring methods based on laser point cloud, it is related to civil engineering operation maintenance technical field, comprising: S1, setting monitoring scheme, arranging strong reflection circular target on structure;S2, utilize laser scanning equipment to emit point cloud to structure, based on reflection intensity characteristic identification and extraction target point cloud;S3, the point cloud data of target is modeled to error, based on inscribed circle fitting, calculate the uniformity of point cloud on spatial distribution;S4, based on error propagation theory, calculate effective acquisition period;All effective measurement datum point coordinates are weighted average, obtain final monitoring coordinate value;S5, compare monitoring coordinate value with historical monitoring data, obtain the spatial displacement variation of structure in different time periods, form displacement time sequence.The application is based on the targeted monitoring idea of laser point cloud reflection intensity characteristic, combined with uniformity test and error propagation theory, realize the high-precision, long-term stable measurement of structure datum point.