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Patent Searching and Data


Matches 1 - 50 out of 2,114

Document Document Title
WO/2017/084905A1
A method for estimating a fundamental component (A) of an AC voltage ( V pcc ) comprises: receiving a timely varying measurement signal of the AC voltage ( V pcc ); parametrizing a fundamental component (A) of the AC voltage ( V pcc ), t...  
WO/2017/066322A2
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting characteristics of an input signal. One aspect includes a first finite input response (FIR) filter, a second FIR filter, and...  
WO/2017/066322A3
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting characteristics of an input signal. One aspect includes a first finite input response (FIR) filter, a second FIR filter, and...  
WO/2017/060908A1
A method of amplifying a phase shift, comprises: receiving an input signal in response to an output signal; generating a reference signal; varying a modulation of at least one of the signals such that a ratio between modulation amplitude...  
WO/2017/001785A1
The invention relates to a circuit for monitoring a three-phase electrical network comprising three phases (φΑ, ΦΒ, ΦC) each having an AC voltage, the circuit being connected to the three phases (φΑ, ΦΒ, ΦC) so as to sample an ...  
WO/2016/205217A1
A system and method is disclosed for measuring time of flight to an object. A transmitter transmits an electromagnetic signal and provides a reference signal corresponding to the electromagnetic signal. A receiver receives the electromag...  
WO/2016/191337A1
A method and apparatus for detecting the wiring configuration of an electric power system based upon a particular voltage ratio that is determined for the electric power system. Also a method and apparatus for diagnosing voltage swap con...  
WO/2016/171628A1
A method for assessing a state of fouling of a reverse osmosis system is provided. The method comprises deriving a plurality of impedance values from a low frequency region of an electrical impedance spectrum of a reverse osmosis membran...  
WO/2016/171629A1
A method for monitoring occurrence of biofouling at a reverse osmosis membrane is provided. The method comprises deriving a plurality of conductance values from a low frequency region of an electrical impedance spectrum of the reverse os...  
WO/2016/151571A3
Disclosed is a system and method that provide a means to overcome errors in determining the source of a electromagnetic event due to reflection, absorption and scattering of the electromagnetic field due to metallic parts of the electric...  
WO/2016/147426A1
This signal analyzing device is provided with: a signal delay unit in which a plurality of delay devices, including at least a first delay device, a second delay device, a third delay device and a fourth delay device, are connected in se...  
WO/2016/097412A1
A wideband digital phase meter is described together with a technique for phase detection. The device measures the phase difference between 2 signals and is suitable for integration into a single MMIC. The input signals are compared digi...  
WO/2016/083019A1
The invention relates to an apparatus (1) and a method for evaluating an eddy current sensor, with an evaluation and control unit (3) and an LC resonant circuit (5) which comprises a measuring capacitor (CM) with a substantially constant...  
WO/2016/076889A1
A method for reducing an error rate is provided. The method includes obtaining a first analog signal representing a first kinematic property of a first position with a sensor, obtaining a second analog signal representing a second kinema...  
WO/2016/070139A1
A computer system at a substation of an electrical grid examines on-grid communication channels and for very channel, the system compares and correlates a GLA signal provided by a downstream transmitter on that channel to a reference GLA...  
WO/2015/190971A1
The method determines an input phase differential (Δφ) between two input signals. A phase detector (116, 118) is provided that has pairs of transistors and a first impedance (R1) connected to a first branch carrying a first signal (Iou...  
WO/2015/157989A1
Disclosed is a synchronous phasor measurement method applicable to a P-type phasor measurement unit (MPU). The measurement method comprises: combining, based on a mathematical model of a dynamic phasor, a low-pass digital filter with a d...  
WO/2015/117304A1
A system for online monitoring of a zinc oxide arrester comprises an arrester online monitoring master control unit, arrester leakage current online monitoring units (1, 2, 3) and a busbar voltage online monitoring unit (4). The arrester...  
WO/2015/053740A1
According to one aspect, embodiments herein provide a system for monitoring circuit branches coupled to an input line of a load center, the system comprising a plurality of first current sensors, each configured to be coupled to a circui...  
WO/2015/044675A1
A phase angle can be measured between an analogue signal and a reference signal by converting the analogue signal to digital samples in a residue number system (RNS) analogue-to-digital converter (ADC), based on a RNS scheme. The phase a...  
WO/2015/011098A1
The invention relates to a method and device for measuring a signal amplitude in order to supply the modulus of the electrical impedance of a sample. According to the invention, the signal is sampled (step 43) at a sampling frequency low...  
WO/2014/108181A1
An alternative phase detector without the need for direct phase measurement is provided. The phase detector comprises three signal inputs (S1, S2, S3), a ratio determination circuit (RDC) for determining at least two ratios of the respec...  
WO/2013/189242A1
A protective circuit for a high frequency heating device and a high frequency heating device having same, the protective circuit for a high frequency heating device comprising: an input winding (1), a sampling winding (2), a phase compar...  
WO/2013/166005A1
A system comprising an interface configured to condition a signal associated with a power system; a clock module configured to generate a synchronization signal; and a module coupled to the interface and configured to digitize the signal...  
WO/2013/156060A1
A phase detector providing linear phase information from -180° to +180° is disclosed. The phase detector comprises frequency divider and phase shifter and a mixer circuit, frequency divider and phase shifter has an output port connecte...  
WO/2013/113891A1
A method and an apparatus for determining a phase (θ) and a frequency (ω) of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component (Vα1, ...  
WO/2013/106763A1
A system and method utilize multiple, asynchronous, voltage isolated integrated power data circuits (IPDCs) to respectively determine one or more power parameters of a multi-phase power distribution system. In at least one embodiment, th...  
WO/2013/071768A1
A phase identification device for a three-phase alternating current power supply comprises a state selector (10) connected to a positive electrode of a voltage output by a load and controlling a circuit to be switched on and switched off...  
WO/2013/066054A1
The present invention relates to a system for diagnosing partial discharge of a power instrument by using a contactless phase measuring sensor. Such a diagnostic system includes: internal and external partial discharge detecting sensors ...  
WO/2012/171219A1
A method for identifying alternating current voltage phase, a power supply module and a power supply system. The input and output connector of the power supply module is provided with phase detecting signal pins. The method includes that...  
WO/2012/115736A1
Example embodiments disclose a drive system including a machine including a plurality of phases and configured to generate power based on a plurality of phase currents, each respectively associated with the plurality of phases and a dire...  
WO/2012/036339A1
Provided is a single-phase line voltage calculating method of a smart electricity distribution operating system. The single-phase line voltage calculating method includes: calculating each phase voltage value by using a current value mea...  
WO/2011/116822A1
A phase detector (100, 400, 800) comprising a balun (150) and input ports (116) at each of the balun's balanced ports. The phase detector (100, 400, 800) has four devices (105, 115, 110, 155) for measuring a signal's amplitude: - a first...  
WO/2011/089421A1
An apparatus and a method for measuring a phasor of an electrical power system signal (20) is described. The power system signal (20) has a cycle having a predetermined period and is sampled to produce a sample stream (22) of the electri...  
WO/2011/071760A3
A system for measuring the superposition of a plurality of sound waves propagating within a conduit containing a fluid having a plurality of transducers positioned substantially parallel to the flow direction along the external surface o...  
WO/2011/071760A2
A system for measuring the superposition of a plurality of sound waves propagating within a conduit containing a fluid having a plurality of transducers positioned substantially parallel to the flow direction along the external surface o...  
WO/2011/038166A3
Techniques and devices for measuring phase noise in radio frequency (RF), microwave, or millimeter signals based on photonic delay.  
WO/2011/038166A2
Techniques and devices for measuring phase noise in radio frequency (RF), microwave, or millimeter signals based on photonic delay.  
WO/2011/029018A2
A voltage-converter and a signal processing circuit are disclosed. A voltmeter, a power meter and a three-phase meter each including the voltage-converter and the signal processing circuit are disclosed. Methods of making the voltage-con...  
WO/2011/029018A3
A voltage-converter and a signal processing circuit are disclosed. A voltmeter, a power meter and a three-phase meter each including the voltage-converter and the signal processing circuit are disclosed. Methods of making the voltage-con...  
WO/2010/136390A1
A wireless communication transmitter is configured to determine transmitter phase shift, and correspondingly includes a derivation circuit, one or more slope polarity tracking circuits, and a phase shift computation circuit. The derivati...  
WO/2010/098460A1
Provided is a phase determining device capable of determining phase differences with high precision using digital circuits. A phase determining device (1) comprises a buffer delay determining circuit (110), a phase difference determining...  
WO/2010/081725A2
A network analyser for measuring a group runtime (T G ), generated by a measuring object (17) to be measured, generates a stimulating signal (x ln (t)) made up of two signals (x In1 (t), x In2 (t)) separated by a frequency difference (Δ...  
WO/2010/048817A1
A signal phase difference measurement method, apparatus and system are provided. The measurement method includes: sampling no less than two signals by one sample channel (101), acquiring the amplitude information of the sampled signals (...  
WO/2010/041163A2
A circuit arrangement is described comprising a first receiver configured to receive a first input signal, a second receiver configured to receive a second input signal, a first signal generator configured to generate a first pulse signa...  
WO/2010/041163A3
A circuit arrangement is described comprising a first receiver configured to receive a first input signal, a second receiver configured to receive a second input signal, a first signal generator configured to generate a first pulse signa...  
WO/2010/024835A1
In one embodiment, a frequency generator produces an excitation signal, a local oscillator signal, and a reference signal at a difference frequency of the excitation signal and local oscillator signal. The excitation signal is applied to...  
WO/2009/140115A1
Methods and devices to determine values relating to metering a power line signal. A power line signal may be sampled by defining accumulation intervals associated with the power line signal. An accumulation interval may comprise sample p...  
WO/2009/126811A2
Coupling a charging station to a power line segment that is terminated at a first end by a charging terminal includes: sensing a communication signal propagating on the power line and being coupled from multiple taps connected to the pow...  
WO/2009/119076A1
Provided is a measuring apparatus for measuring a signal to be measured. The measuring apparatus is provided with a first oscillation circuit which receives input of one pulse of the signal to be measured, starts to oscillate in response...  

Matches 1 - 50 out of 2,114