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Matches 1 - 50 out of 9,167

Document Document Title
WO/2020/264503A1
A health monitor circuit for an electric machine is described. The health monitor circuit includes at least one sensor configured to measure a parameter of the electric machine, a communication interface, and a microprocessor coupled to ...  
WO/2020/215163A4
Arc fault current interrupter electrical devices and systems. An example is an electrical device comprising: a contact configured for electrical connection to a power line; at least one sensor to detect at least voltage signals indicativ...  
WO/2020/232475A1
Systems, devices, software, and methods of the present invention enable frequency-based signal power analyses in software suitable for signal with either stationary and non-stationary spectrums. The methods that may be used throughout va...  
WO/2020/225193A1
The invention relates to a method for detecting a direct current component in an inductive device, for example in a transformer or choke, comprising the following method steps using a computer: - Recording a oscillation signal, either of...  
WO/2020/220804A1
A variable-sampling rate Fourier analysis method, comprising the following steps: S100, comparing an initially set sampling frequency to preliminarily sample a signal to be analyzed, and then analyzing the fundamental frequency and funda...  
WO/2020/215163A1
Arc fault current interrupter electrical devices and systems. An example is an electrical device comprising: a contact configured for electrical connection to a power line; at least one sensor to detect at least voltage signals indicativ...  
WO/2020/209513A1
The present invention relates to a partial discharge diagnosis and location detection method and comprises the steps of: configuring a trigger signal on the basis of a first sensing signal acquired from multiple partial discharge sensors...  
WO/2020/204740A1
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 frequ...  
WO/2020/181320A1
A system for testing an antenna under test (AUT), and a system and method of locating a passive intermodulation (PIM) fault in an AUT is provided. The AUT comprises an input port and a plurality of branches, each branch ending in at leas...  
WO/2020/178919A1
This signal analysis device(10), which decomposes a signal to be analyzed into a plurality of anharmonic signals, is characterized by being provided with: a parameter candidate selection unit (103) which selects a combination candidate o...  
WO/2020/154514A8
A reliable method and apparatus for communications over AC power lines that may have substantial interference is disclosed. A controller can be plugged into an AC outlet and communicate with a device plugged into any other AC outlet over...  
WO/2020/171145A1
A cycle estimation device (10) extracts a candidate cycle from an input pulse train. The cycle estimation device (10) uses a portion of the candidate cycle to determine whether the candidate cycle is an actual cycle, and if not an actual...  
WO/2020/169718A1
A measuring assembly (1) for detecting intermodulations which limits the source of these intermodulations as precisely as possible in order to be able to make statements as to whether the device under test (10) or the rest of the measuri...  
WO/2020/158195A1
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...  
WO/2020/152764A1
Conventional frequency detection circuits have suffered from a problem in which increasing the reception signal frequency to be detected results in an increase in circuit scale. The frequency detection circuit according to the present ...  
WO/2020/154514A1
A reliable method and apparatus for communications over AC power lines that may have substantial interference is disclosed. A controller can be plugged into an AC outlet and communicate with a device plugged into any other AC outlet over...  
WO/2020/143521A1
A digital audio signal sampling frequency detection method and device. The method comprises: by means of a reference clock signal and a sampling rate clock signal of a digital audio signal, detecting the sampling frequency of the digital...  
WO/2020/117270A1
A system, a method, and a machine-readable medium for overclocking a computer system is provided. An example of a method for overclocking a computer system includes predicting a stable operating frequency for a central processing unit (C...  
WO/2020/110820A1
To provide a physical quantity measurement device capable of reducing frequency analysis error of a gas flow rate than is done conventionally. A physical quantity measurement device 20 includes a flow rate sensor 205 and a signal process...  
WO/2020/073574A1
A phase detection method and apparatus, and a storage medium and an electronic apparatus. The method comprises: performing a sampling operation on a clock signal to be detected to obtain a binary sequence (S12); determining, according to...  
WO/2020/076713A1
Methods and digital circuits provide frequency correction to frequency synthesizers. Dual switched-capacitor voltage detectors connected to an input signal periodically sample the voltage of the input signal, and then determine a fundame...  
WO/2020/056402A1
A discrete spectrum (DS) signal transmitter includes a first circuit element comprising a DS signal generator that generates a plurality of DS signals, each DS signal having a different DS frequency, each DS frequency being (a) a harmoni...  
WO/2020/039077A1
The invention relates to a method for detecting low-frequency vibrations, in particular sub- synchronous resonance, in an electric supply network. The electric supply network has a network voltage with a network nominal frequency. The me...  
WO/2020/038692A1
The invention relates to a method for detecting low-frequency vibrations, in particular sub- synchronous resonance, in an electric supply network. The electric supply network has a network voltage with a network nominal frequency. The me...  
WO/2019/040843A8
A monitoring device for monitoring a fabrication process in a fabrication system. The monitored fabrication system includes a process chamber and a plurality of flow components. A quartz crystal microbalance (QCM) sensor monitors one flo...  
WO/2020/024320A1
A refined Fourier transform-based signal analysis method, belonging to the field of signal processing. Said method convolutes a signal x(n) to be analyzed and e-2 πj αmn/N, so as to obtain a refined Fourier transform form of x(n), N re...  
WO/2020/013811A1
Technologies are described for a system and method for analyzing a liquid sample. An example system may include a controller and an apparatus comprising a dispensing unit, a light source, and a sensor, where the system may be cost-effect...  
WO/2020/008036A1
The invention relates to a method for identifying low-frequency oscillations, in particular subsynchronous resonances, in an electrical supply network (510), wherein the electrical supply network (510) has a network voltage with a nomina...  
WO/2020/007970A1
The invention relates to a method for detecting low-frequency oscillations, more particularly subsynchronous resonances, in an electrical supply network (306), wherein the electrical supply network (306) has a mains voltage with a rated ...  
WO/2020/002184A1
A current sensor with a flux gate comprising a magnetic core (13), a measurement winding (14), an excitation circuit (23) arranged to generate a digital excitation signal (Se), an acquisition circuit (17) arranged to acquire an analogue ...  
WO/2020/002954A1
A location of at least one PIM source (10) within an antenna array assembly (2) is determined by applying an excitation waveform to a connection port (13), setting a multi-element phase shifter (8) to a first state to apply a respective ...  
WO/2019/240787A1
An apparatus, method and work product is disclosed. The method comprises measuring plural transmit signals and corresponding receive signals and determining, using a model describing a relation between each of the plural transmit signals...  
WO/2019/158754A9
Disclosed is an electrical condition monitoring system (100) including a data server arrangement that is connectable to a monitoring unit that is configured to monitor an electrical device when in operation, wherein: the monitoring unit ...  
WO/2019/225014A1
This spectrum analysis method includes: an accumulation step (S10) for accumulating n spectra obtained by consecutively repeating a fast Fourier transform (FFT) n times on an input signal; a receiving step (S11) for receiving a threshold...  
WO/2019/221301A1
A remote photoplethysmography (RPPG) system includes an input interface to receive a sequence of measurements of intensities of different regions of a skin of a person indicative of vital signs of the person; a solver to solve an optimiz...  
WO/2019/217349A1
A detection method and system are provided to detect an arc fault signal in a (HF) high frequency signal monitored on a power line. The HF signal is monitored on the power line over a predefined time period such as a half-cycle of a base...  
WO/2019/216819A1
The invention is a method to create an instantaneously wideband digital receiver system despite using a digital receiver with substantially smaller bandwidth than the complete system. The invention solves the problem by using frequency c...  
WO/2019/202732A1
This radiation interference wave measurement method includes: a provisional measurement step (S21) for carrying out broadband measurement which includes peak value detection and a quasi-peak value detection by targeting a measurement fre...  
WO/2019/158754A4
Disclosed is an electrical condition monitoring system (100) including a data server arrangement that is connectable to a monitoring unit that is configured to monitor an electrical device when in operation, wherein: the monitoring unit ...  
WO/2019/132802A3
The present invention is a system for realizing band calibration of a voltage controlled oscillator (100) which generates signal having cycle frequency which is proportional with a control value in a control signal received as input, cha...  
WO/2019/158751A4
Disclosed is an electrical condition monitoring system that is connectable to an electrical device for monitoring the electrical device when in operation, wherein: (i) the electrical condition monitoring system includes (a) a sensing arr...  
WO/2019/182166A1
An electrical load determination apparatus and method using a modified MFCC are disclosed. According to a particular embodiment of the present invention, an electrical load-specific feature vector showing a clear difference in an electri...  
WO/2019/174462A1
A method for accurately measuring the harmonic voltage of a capacitor voltage transformer (CVT) by means of interpolation. In the method, by means of curve fitting, a mathematical interpolation calculation equation under the condition of...  
WO/2019/170001A1
Provided is a frequency spectrum monitoring data structured representation method, comprising the following steps: discretizing frequency spectrum monitoring data of a single station in a time dimension and a frequency spectrum dimension...  
WO/2019/170000A1
A spectrum monitoring data processing system, comprising: a station calibration and synchronization module, a monitoring data pre-processing module, a monitoring data compression processing module and a data transmission module. A spectr...  
WO/2019/170093A1
A method for generating a frequency spectrum state, and a device and computer storage medium; the method comprises: 1. determining and configuring complex electromagnetic environment parameters; 2. acquiring sensing data by means of wide...  
WO/2019/169442A1
There is provided herein a spectrum analyser and a method of operation thereof which is able to receive and analyse interference signals in a way that is substantially immune to sporadic interferences, allowing for more accurate detectio...  
WO/2019/169088A1
According to methods of performing measurements to determine a distance to a passive-intermodulation ("PIM") source, a first RF signal comprising a first frequency and a second RF signal comprising a second frequency may be applied to a ...  
WO/2019/167878A1
[Problem] To provide a power amplifier adjustment method and an adjustment system with which it is possible to adjust a linearizer using two waves of equal-power signals, and to make a non-linear influence on a multi-carrier signal small...  
WO/2019/166217A1
The present disclosure relates to a method and system for estimating a grid frequency or grid phase angle of an electrical power distribution system in which instantaneous voltages output by the electrical power distribution system are s...  

Matches 1 - 50 out of 9,167