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JP7234505B2 |
A vibration rectification error correction circuit includes a first correction circuit that obtains a digital value based on a signal to be measured output from a sensor element configured to measure a physical quantity and corrects a vi...
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JP7214698B2 |
A receiving device includes a reception unit that samples a sample signal from a DUT 2; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal by a window function; an FFT length setting unit 34 that, whe...
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JP7208075B2 |
The purpose of the present invention is to accurately discriminate a desired frequency. A frequency detection circuit comprises: a pulse generation circuit (1) which generates a pulse voltage for every half cycle of an AC voltage; a tria...
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JP2023007250A |
To provide a device condition monitoring device capable of properly monitoring device condition.A device condition monitoring device 100 includes: a frequency analysis unit 31 that outputs a vibration frequency spectrum SP1 generated by ...
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JP2023005546A |
To heighten the accuracy of measuring a clock signal without using a high-frequency sampling clock signal.A clock signal measurement device 50 is a device that operates in synchronism with a sampling clock signal 502, and comprises: a sa...
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JP7204064B2 |
A frequency detector comprising an FFT device for calculating N Fourier transform results from N items of sampling data, and a detector for detecting an index which is the order of a frequency at which amplitude is at maximum, wherein th...
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JP7190063B2 |
A method and system are provided for estimating the g-sensitivity of a quartz oscillator, which includes rotating the quartz oscillator successively around each of a plurality of axes constituting a full-rank system, measuring a frequenc...
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JP7185673B2 |
A signal analysis apparatus includes a frequency conversion unit 10 that includes a first local oscillator 11 which outputs a first local oscillation signal SLO1 of a frequency fLO1, a first mixer 12 which generates a first spurious sign...
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JP7177865B2 |
To provide a measuring device that, even when performing measurement while switching a hardware configuration, can accurately interpolate a correction value immediately before and immediately after the switching of the hardware configura...
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JP7174793B2 |
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JP7171004B1 |
A time-to-digital converter capable of achieving high precision, high resolution, and high speed without requiring ASIC or analog circuit design. A time-to-digital converter 10 for measuring a time interval T between a first time point t...
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JP2022169984A |
To provide a measurement device, a measurement method and a program with which it is possible to measure a dominant frequency that exceeds the Nyquist frequency in a waveform signal.The measurement device comprises: a filter for limiting...
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JP2022169296A |
To provide a technology that measures, by a simple structure, the frequency of a frequency signal with high accuracy.In a frequency measurer 1 that measures the frequency of a frequency signal using a PLL circuit, a multiplication unit 1...
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JP7165705B2 |
A receiving device includes a reception unit 10 that samples a signal to be measured a transmitted from a DUT 2 and acquires a sample signal d; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal; a si...
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JP2022161720A |
To provide a signal measurement device that eliminates the need for a broadband sample-and-hold circuit.A signal measurement device 100 measures a periodic measurement object signal S1. A multitone signal generator 110 generates a multit...
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JP2022141193A |
To provide a frequency voltage conversion circuit capable of suppressing a leak current generated in a circuit and outputting a constant output voltage even when an output voltage is influenced by a sine wave noise applied to a constant ...
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JP7143070B2 |
To easily check whether signals transmitted from a mobile broadcast station use correct frequency bands.According to an embodiment, a display control device comprises: a frequency spectrum display control unit that displays, from a monit...
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JP2022140347A |
To provide methods, devices and systems for coherent time-gated residual spur characterization and correction in signal analyzers.The methods include: displaying a signal on a display of a signal analyzer that is present without an input...
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JP2022137953A |
To more accurately diagnose abnormality of a spindle of a roll included in a rolling mill.In a rolling mill for rolling a metal plate, when rolling the metal plate using the rolling mill including a roll used for rolling the metal plate ...
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JP7133527B2 |
The disclosure provides a spectrum calculation device and a spectrum calculation method, in which an inner product of a predetermined number of sampling data xn obtained by sampling and predetermined kernel functions is calculated, and s...
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JP7130150B2 |
A signal analysis device (100) includes: a plurality of time-frequency conversion units (40-1 to 40-4) that are each provided corresponding to one of a plurality of sampling sequences and convert a corresponding sampling sequence from a ...
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JP7124671B2 |
To obtain a signal analyzer with which it is possible to continuously detect a signal even when signal power and noise power become equal.Provided is a signal analyzer for estimating a combination of a basis function representing a recei...
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JP2022117763A |
To provide a measurement technique that can accurately measure an A/D converter.A testing device 200 tests an A/D converter 112 having a sampling rate FS. A waveform generator 210 supplies a sine-wave test signal STEST having a predeterm...
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JP2022117764A |
To provide a measurement technique that can accurately measure an A/D converter.A testing device 200 tests an A/D converter 112 having a sampling rate FS. A waveform generator 210 supplies a sine-wave test signal STEST having a frequency...
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JP2022107342A |
To provide a frequency estimation device, a frequency estimation method, and a frequency estimation program which can estimate a frequency of an input signal without redesigning a filter for every time the frequency changes.A frequency e...
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JP2022531981A |
The systems, devices, software, and methods of the invention allow frequency-based signal power analysis in software suitable for signals with either stationary or non-stationary spectra. Methods that can be used throughout various syste...
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JP2022104346A |
To provide a signal processing method that can detect a signal component with periodicity without performing envelope processing.A signal processing method includes: a processing target signal generation step of generating a processing t...
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JP2022097178A |
To detect anomaly of a bearing.An anomaly detection system for a bearing includes: a bearing; a distortion sensor attached to the bearing for detecting distortion caused by passing vibration of the bearing and providing analog data; an a...
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JP7091476B2 |
Provided is a physical quantity measurement device capable of reducing a frequency analysis error of a gas flow rate as compared with the related art. A physical quantity measurement device 20 includes a flow rate sensor 205 and a signal...
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JP2022094048A |
To improve accuracy of calibration using a window function.A signal calibration device 1 comprises: a signal acquisition unit 10 for acquiring an output signal; a time window cutout unit 12 for cutting out a plurality of time windows fro...
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JP2022091419A |
To improve accuracy in measuring a frequency of an AC voltage waveform.A measuring device comprises: a measuring unit that measures an AC voltage waveform; a first detection unit that detects first cross time when a measured value of the...
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JP2022091420A |
To improve accuracy in measuring a frequency of an AC voltage waveform.A measuring device comprises: a measuring unit 90 for an AC voltage waveform; first detection units 31, 33 that detect first cross time when the AC voltage waveform c...
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JP7086321B2 |
A frequency analysis device (101) that uses butterfly computation circuits (21, 22) and delay buffers (11-15) provided before and after the butterfly computation circuits (21, 22) to perform a fast Fourier transform and to perform a proc...
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JP7085805B2 |
Disclosed are systems and methods related to a noise reduction device employing an analog filter and a corresponding inverse digital filter. The combination and placement of the filters within the systems aids in reducing noise introduce...
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JP7070790B2 |
A period estimation apparatus includes processing circuitry configured to extract candidate periods being a target of period determination from an input pulse train, use at least one of the candidate periods extracted to determine whethe...
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JP7055256B2 |
A frequency detection circuit (3) includes a signal source (11) that outputs a first clock signal and a second clock signal that has the same frequency as the first clock signal and a different phase from the first clock signal, a S/H ci...
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JP7052526B2 |
A non-transitory computer-readable recording medium storing a program that causes a computer to execute a procedure to determine a feature of each standard of a wireless environment in which radio signals including a CSS signal chirp-mod...
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JP7050334B2 |
This disclosure relates to optical RF spectrum analysers and methods for analysing an input RF signal. An optical modulator modulates an input RF signal onto a carrier frequency and an optical spectral weight with a spectral weight funct...
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JP2022054297A |
To provide a harmonic measuring device that can calculate information of an amplitude related to a harmonic at a lower cost and with high speed, and to provide an individual operation detection system using the harmonic measuring device....
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JP7043959B2 |
A count value generation circuit includes a first counter that counts edges of a reference signal to generate a first count value in synchronization with an input signal, a time digital value generator that generates a time digital value...
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JP7044184B2 |
To provide a time-to-digital converter that has no restriction on a difference in a frequency between two signals and a measuring time range, can keep the measuring time fixed, and is high in measurement accuracy.A time-to-digital conver...
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JP7040253B2 |
A physical quantity sensor module includes: a resonant frequency shift based physical quantity sensor whose frequency adjusts with a adjust in physical quantity; a reference signal oscillator which outputs a reference signal; a frequency...
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JP7037674B2 |
Example implementations described herein are directed to systems and methods for extracting signal in the presence of noise for industrial IoT systems. Through the example implementations described herein, the high-frequency band signal ...
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JP2022038491A |
To provide a detector capable of highly precisely detecting a frequency change caused by a change in physical properties of a detection object, while suppressing an influence thereof on environment.A detector 1 includes a first sensor 11...
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JP7032096B2 |
To analyze the higher harmonics of a periodic signal having a high fundamental frequency with high accuracy.An analyzer of the present invention comprises: a sampling unit 12 for acquiring the instantaneous value of a periodic signal S a...
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JP7026725B2 |
The present invention relates to a spectrum analyzer having a memory function to adopt a digital-data-based frequency sweep scheme while achieving performance comparable to performance of a high-speed FFT spectrum analyzer, and a method ...
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JP7024890B2 |
A sine wave output unit 2 (audio output unit) outputs an audio signal of a certain frequency to a speaker (10). A sound pickup unit (3) picks up audio outputted from the speaker (10). A signal output control unit (41) controls the freque...
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JP7004877B2 |
An interference cancellation device includes a data symbol extraction unit that extracts a data symbol portion from a received signal, a null symbol extraction unit that extracts a null symbol portion from the received signal, a data sym...
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JP2022022061A |
To improve the accuracy of measuring the frequency of an AC voltage waveform.A measuring device comprises: a measuring unit that measures an AC voltage waveform; a first detection unit that detects a first cross time at which the measure...
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JP2022021012A |
To provide a signal processing method that can detect a signal component having periodicity included in a signal of a processing object without performing envelope processing.A signal processing method comprises: a processing object sign...
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