16 results about "Bandwidth measurement" patented technology

The invention discloses a high-integration-level miniaturized TMR magnetic field sensor and a use method thereof, relates to the technical field of electrical equipment measurement, and solves the problems that most existing TMR sensors in the prior art are discrete devices, the system integration level is low, and the noise immunity and the stability are not high in an electric power environment with high-frequency signals and strong electromagnetic interference. The TMR magneto-sensitive unit, the signal conditioning circuit and the analog / digital interface are highly integrated in the same package, and the size of the sensor is remarkably reduced while high sensitivity and broadband response are kept. Besides, by optimizing the magnetoelectric structure design and the signal chain topology, background noise and bias drift are reduced, the measurement precision is improved, and the method is particularly suitable for high-density layout, complex electromagnetic environments and high-bandwidth measurement scenes. According to the invention, a better current measurement solution is provided for novel power systems such as a smart power grid, a modular power electronic device and a distributed energy system.

The application discloses a kind of wideband signal multi-domain parameter simultaneous measurement method based on space-time joint processing, belong to electronic reconnaissance field, first to radar signal AD sampling, after polyphase filtering, filter data are obtained;Filter data are respectively carried out time domain and space domain FFT transformation, and the spectrum sequence of space domain focusing is obtained;Direction correction is carried out to the problem of the spectrum sequence of space domain focusing exists direction deviation, and space-time two-dimensional spectrum matrix is obtained;Space-time two-dimensional spectrum matrix is projected in space domain, and through threshold setting and peak value screening, the angle of arrival measurement value is obtained;Center frequency and bandwidth measurement value are obtained by threshold design and peak value screening using angle of arrival measurement value to extract specific angle of arrival sequence.

The invention provides a device and method for measuring the real-time analysis bandwidth of a broadband real-time signal analyzer, and the device comprises a broadband signal generation device and a broadband sampling oscilloscope, and the broadband sampling oscilloscope is used for calibrating a broadband multi-sine pulse modulation signal generated by the broadband signal generation device. Measuring the real-time analysis bandwidth of the broadband real-time signal analyzer according to the standard signal; the method comprises the following steps: generating waveform data of a multi-sine pulse signal by using a control machine, uploading the waveform data to a baseband signal generation module to generate a multi-sine pulse modulation signal, converting the multi-sine pulse modulation signal to a measurement frequency band through an up-converter, and calibrating the formed broadband multi-sine pulse modulation signal by using a broadband sampling oscilloscope, and then the real-time analysis bandwidth and in-band frequency response of the broadband real-time signal analyzer are measured. The real-time analysis bandwidth of the measured equipment can be obtained only through one-time measurement, so that the measurement times are reduced, the real-time performance is enhanced, and the measurement result is more reliable.

The invention relates to the technical field of bandwidth measurement, in particular to a data-driven bandwidth measurement method, which comprises the following steps of: acquiring a write-in information construction sequence, screening a stable number accumulation threshold trigger interval, extracting a bandwidth record association context and outputting a result. According to the method, active identification of stable data behaviors is realized by sorting and screening the write-in time difference sequence and combining the write-in length trend and the time interval fluctuation characteristics, and the data behaviors are identified by tracking the continuous numbering record and the original write-in content and establishing the mapping relation between the data behaviors and the bandwidth result. The problem that a traditional method depends on an external test packet and interferes with service data due to a measurement behavior is effectively avoided, the real-time performance and context correlation of bandwidth measurement are improved, and the recognition capability for the network state continuity and the transmission load trend is enhanced by limiting a fluctuation interval and a data boundary threshold constraint. And dynamic continuous perception and fine description of the real bandwidth are realized.

This invention relates to a multi-point concurrent UDP bandwidth measurement method, apparatus, and storage medium, applied in the field of network communication technology. It includes: concurrently connecting a client to multiple speed test servers and aggregating and calculating test data from all paths, effectively avoiding interference from momentary congestion of a single network path or load bottlenecks of a single server on the measurement results, enabling the measurement results to more realistically and stably reflect the client's local network access limit capacity; employing a two-stage rate control algorithm combining "target verification and binary search," first attempting to verify the user's expected target bandwidth. If network conditions are good, the test can be completed in one go, greatly improving efficiency; if the target is not achieved, binary search is used to quickly approach and converge to the limit bandwidth value within a fixed number of rounds. This automated detection process significantly improves testing efficiency and automation.

Embodiments of the present application provide a downlink interference avoidance scheduling method, device, apparatus and storage medium. The method comprises: determining the position of a target terminal; if the target terminal is located at the edge area of an interference cell, configuring a plurality of channel state information reference signal (CSI-RS) measurement bandwidths, wherein the plurality of CSI-RS measurement bandwidths comprise a full bandwidth CSI-RS measurement bandwidth and at least one CSI-RS measurement bandwidth with the size of the bandwidth of the interference cell; determining the interference level of the physical resource block (PRB) corresponding to the bandwidth of the interference cell based on the measurement values on the plurality of CSI-RS measurement bandwidths reported by the target terminal; and allocating resources for the data to be transmitted by the target terminal based on the interference level of the PRB corresponding to the bandwidth of the interference cell. The embodiments of the present application can effectively identify and avoid downlink interference, and improve the throughput of the serving cell.

The invention relates to a multipoint concurrent UDP (User Datagram Protocol) bandwidth measurement method and device and a storage medium, which are applied to the technical field of network communication, and comprise the following steps of: concurrently connecting a plurality of speed measurement servers through a client, and carrying out aggregation calculation on test data of all paths, the interference of instantaneous congestion of a single network path or the load bottleneck of a single server on the measurement result is effectively avoided, so that the measurement result can reflect the ultimate bearing capacity of the local access network of the client more truly and more stably; a two-stage rate control algorithm combining'target verification and binary search 'is adopted, firstly, a target bandwidth expected by a user is tried to be verified, if the network condition is good, the test can be completed at a time, and the efficiency is greatly improved; and if the target is not achieved, the target is quickly approached and converged to the limit bandwidth value in a fixed and few rounds through binary search, and the automatic detection process remarkably improves the test efficiency and the automation degree.

The application belongs to the field of reconfigurable on-chip spectrometer, and specifically discloses a reconfigurable on-chip spectrometer based on a low-loss GST superlattice phase change material. The application combines the GST-SL2 material with a double-cascade micro-ring array architecture to achieve a breakthrough in device performance, and a large number of spectral responses can be generated with only a limited number of micro-ring resonators on the chip, while supporting flexible regulation of spectral resolution and working bandwidth to meet the customized needs of different application scenarios. A resolution regulation array is composed of a plurality of first MRRs arranged at equal intervals along the extension direction of the bus waveguide, and the resonant micro-ring lengths of the first MRRs increase. This cascade design significantly enhances the overall regulation capability through the synergistic effect of multiple MRRs, ensuring that the sampling points can uniformly cover the entire working bandwidth of the on-chip spectrometer. The measurement bandwidth regulation array divides the working bandwidth into multiple channels, successfully enhancing the non-correlation of the system response function and providing a reliable foundation for spectral reconstruction.

The utility model discloses a response bandwidth measuring device of a capacitance type blade tip clearance measuring system based on a variable capacitance diode, the capacitance type blade tip clearance measuring system is composed of a capacitance sensor, a measuring system host and an upper computer which are connected in sequence, and the measuring system host comprises a signal demodulation module and an acquisition module. The capacitance sensor is composed of a sensor probe and a tri-coaxial cable which are connected with each other, the response bandwidth measuring device is connected with the tri-coaxial cable through an SMA connector after replacing the sensor probe, and a variable capacitance diode is adopted to simulate capacitance change caused by the fact that a blade tip of a rotating blade sweeps the capacitance sensor probe; the response bandwidth measuring device is composed of a variable capacitance diode D, a resistor R1, a capacitor C1 and a capacitor C2. Two ends of the capacitor C2 connected in parallel with the variable capacitance diode D are respectively connected in series with the resistor R1 and the capacitor C1, the capacitor C1 is connected with the tri-coaxial cable, and the input end of the response bandwidth measuring device is connected with the resistor R1.

The present application relates to the technical field of bandwidth measurement, in particular to a data-driven bandwidth measurement method, comprising the following steps: obtaining write information to construct a sequence, screening a stable number accumulation threshold trigger interval, extracting bandwidth record associated context and outputting results.In the present application, through sorting and screening the write time difference sequence, combining the write length trend and time interval fluctuation characteristics, the active identification of stable data behavior is realized, the mapping relationship between data behavior and bandwidth result is established by tracking continuous number records and original write content, the problem of dependence on external test package and interference of measurement behavior on business data of traditional method is effectively avoided, the real-time and context correlation of bandwidth measurement are improved, through limiting the fluctuation interval and data limit threshold constraint, the identification ability of network state continuity and transmission load trend is enhanced, the continuous perception and fine description of real bandwidth dynamics are realized.

The utility model discloses a response bandwidth measuring device of a capacitance type blade tip clearance measuring system based on a bipolar plate rotating structure, the blade tip clearance measuring system is composed of a capacitance sensor, a measuring system host and an upper computer which are connected in sequence, and the measuring system host comprises a signal demodulation module and an acquisition module; the response bandwidth measuring device comprises a sensitive polar plate, a receiving polar plate, a rotating table, a displacement table and a blocking capacitor; the rotating table comprises a rotating shaft, a mounting seat and a controller; the controller is used for controlling the rotating speed of the rotating shaft and displaying the rotating speed in real time; the supporting rod on the mounting seat is sleeved with a displacement table; the rotating shaft is rotatably mounted on the mounting seat; the sensitive polar plate is fixed on the rotating shaft as a rotating component; the receiving polar plate is fixedly arranged on the displacement table and is positioned above the sensitive polar plate; the distance between the receiving polar plate and the sensitive polar plate is changed by adjusting the height of the displacement table; and the receiving pole plate is sequentially connected with a blocking capacitor and a core pole of a tri-coaxial cable.

A method for deploying and linking a ROS application package in a ROS-based distributed computed environment including multiple hosts includes: deploying a ROS application package to a specific host and predicting performance of a topic generated by a ROS-based module to which the ROS application package is deployed; measuring a maximum bandwidth between hosts for a plurality of hosts by using a network bandwidth measurement tool; generating localhost mode setting information based on the predicted performance; generating host-to-host middleware setting information based on the predicted performance; and transmitting a deployment command including the localhost setting information and the host-to-host middleware setting information to a target host.

The invention discloses a polarization multiplexing multi-range metasurface dispersion spectrum analysis device. The device comprises a collimator, a polarization multiplexing metasurface and a photoelectric detector which are arranged in sequence, the collimator collimates the optical signal to be measured to form a collimated light beam; and the polarization multiplexing metasurface applies different wavelength-related phase regulation on the collimated light beam and then focuses the collimated light beam to different spatial positions on the photoelectric detector, so that multi-range spectral analysis is realized. According to the invention, multiplexing of the multi-range spectral analysis function of the polarization dimension is realized, and the function integration level of the device is improved; multi-spectral range setting is supported, and customized resolution and wide bandwidth measurement can be realized; the device is compact and small in structure, and can be used as an on-chip spectrometer or a portable spectrum detection device.

The application discloses a system memory peak bandwidth measurement method and electronic equipment, and relates to the technical field of bandwidth measurement. The application optimizes a memory bandwidth measurement process by cooperating with a dynamically selected maximum width vector instruction, forced non-cache access and NUMA awareness binding. The application improves single operation data throughput to 512 bits or even higher by using the vector processing capability of a CPU. The application bypasses a cache level by cooperating a non-temporal instruction with a memory barrier instruction, eliminates the interference of cache hits or jitter on measurement results, ensures that measurement results truly reflect the performance of a memory system itself, avoids delay and congestion caused by cross-node access through an automatic NUMA binding mechanism, and improves the accuracy, stability and repeatability of test results.

The application discloses a kind of optical domain channelization microwave signal time-frequency analysis device and method, by based on the parallel measurement principle of three optical frequency comb, for the frequency-time mapping based on sweep signal and filter structure The optical domain analog time-frequency conversion of realization provides new measurement performance promotion dimension, i.e. optical frequency comb spectral line number.Different optical frequency comb spectral line is responsible for the measurement of the time frequency information of different frequency bands of the signal to be measured.Signal to be measured different frequency band time frequency information is mapped into time domain by different carrier modulation electric domain pulse, through the sampling of electric domain pulse, and combining the channel label of carrier identification, the time-frequency information of different channels mixed in time domain is separated through subsequent processing, and further the complete time frequency information of the signal to be measured is obtained.The application introduces new measurement performance promotion dimension by optical frequency comb, can realize the promotion of time-frequency conversion analysis bandwidth, time resolution and frequency resolution, reduce the dependence on large-bandwidth high-speed sweep signal source when system large-bandwidth measurement.

This invention relates to a channelization-based method for measuring the bandwidth of cross-channel broadband signals. The method includes the following steps: grouping the channels of a channelized digital receiving system; determining whether the signal frequency is within the channel bandwidth range by judging the range of the sub-channel phase difference, thereby obtaining effective frequency measurement enable and effective detection pulses; calculating the signal frequency based on the sub-channel signal phase difference; selecting effective signal frequencies based on the sub-channel frequency measurement enable; measuring the bandwidth of the sub-channel signals; performing time-domain overlapping signal detection and processing; generating an effective channel identifier matrix for each signal; and summing the effective bandwidth measurements of the channels containing the signal based on the effective channel identifier matrix to obtain the signal bandwidth. In summary, this invention has the advantages of good broadband signal bandwidth measurement performance, wide application range, low resource consumption, high real-time performance, and is very suitable for systems that are sensitive to resource usage and have high real-time requirements.