A method and system for analyzing waveform capture data is provided. In one aspect, the method comprises receiving, by a controller from an intelligent electronic device, waveform capture data indicative of an electrical event, extracting, from the waveform capture data, electrical event data, extracting, from memory associated with the controller, additional data, classifying the waveform capture data into a category of a plurality of categories using the electrical event data, comparing the electrical event data and the additional data to stored data, diagnosing the electrical event and a cause of the electrical event based on the comparison and providing an indication of the cause of the electrical event.

A method for monitoring a power system includes receiving, from at least one component monitor in communication with components of the power system, a first set of readings for at least one of the power system components at an input of a central processing unit. The method also includes providing the first set of readings to be displayed in a graphical format on a user interface. A user selection of a portion of the first set of readings, and at least one user classification of the portion of the first set of readings, is received. Portions of the first set of readings are identified and removed based on the at least one user classification to generate a modified set of readings. The modified set of readings is classified by at least one characteristic, and the at least one characteristic is detected in a second set of readings.

A arrangement is disclosed for an on-chip system having an increased resolution for supply voltage measurements. The system includes a phase locked loop (PLL), a divider, and a timer. The PLL is configured to generate an oscillator signal. The divider is configured to divide the oscillator signal to generate an divided clock signal. The timer is configured to generate an application start signal and an analog to digital converter (ADC) start signal based on the oscillator signal and a timer delay (Tdelay). The timer delay (Tdelay) is based on the application start signal and the ADC start signal.

An abnormality diagnosis apparatus includes a time series data obtaining unit for obtaining test data and variable data, the test data being obtained from the test object over a predetermined period of time and being time series data of a predetermined attribute value that dictates whether an abnormality is present in the test object, and the variable data corresponding to the test data for the predetermined period of time and being time series data regarding a variable affecting the attribute value, a superimposed image generating unit for superimposing a waveform of the test data and a waveform of the variable data to generate superimposed image data, and a determining unit for determining whether an abnormality is present in the test object based on the superimposed image data generated by the superimposed image generating unit.

According to one embodiment, a supervisory circuit includes a trigger determination circuit and a trigger table. The trigger determination circuit receives signal processing signals outputted from a plurality of signal processing circuits as trigger signals, determines whether processing operations by the signal processing circuits are executed in a predetermined order, and outputs an interrupt signal when detecting a trigger signal out of setting. The trigger table is provided with trigger-specific tables corresponding to the respective signal processing circuits, reads a trigger setting to occur next based on a trigger determined as being correct by the trigger determination circuit, and outputs a table read signal to the trigger determination circuit.

In order to classify a current waveform of current estimated to be supplied to the same electric instrument, even when an operation mode of an operating electric instrument is unknown, a classification computer includes: a first classification unit to perform first classification of each piece of set information by information being included in each piece of the set information being a combination of waveform information and on/off information, and representing a similarity degree of the waveform information; a second classification unit to perform second classification of each piece of the set information by information being included in each piece of the set information and representing a similarity degree of the on/off information; and a third classification unit to classify the set information by a classification result related to the first classification and the second classification.

A method for measuring a temporal drainage of an alternating current flowing through a measurement object, in which a Rogowski-Steinhaus-Chattock coil is aligned on the measurement object, at least one isolating line is inserted into coil windings of the Rogowski-Steinhaus-Chattock coil, said isolating line minimizing a capacitive coupling of the coil windings of the Rogowski-Steinhaus-Chattock coil with one another and/or with at least one further electrical line, and a voltage induced by the alternating current in at least one measuring line comprising the Rogowski-Steinhaus-Chattock coil is measured. A corresponding sensor and a method for providing a sensor of this type are furthermore disclosed.

Systems and methods for measuring electrical parameters (e.g., voltage, current, power) in an insulated or blank uninsulated conductor (e.g., insulated wire) without requiring a galvanic connection between the conductor and a clamp probe. A clamp probe may include a normally closed, spring loaded jaw having a flexible strap therein that includes one or more non-contact sensors. The jaw may also include a Rogowski coil to enable non-contact current measurements. A user may compress handles of the clamp probe to open its jaw. In the open position, the user may position the jaw around the conductor under test and release the handles. The jaw then closes and tightens the flexible strap around the insulated conductor such that the one or more non-contact sensors are positioned adjacent the insulated conductor to obtain an accurate measurement of an electrical parameter of the insulated conductor.

There is provided a voltage conversion device that is configured to perform zero point adjustment of a high voltage-system voltage detected by a high voltage-system voltage detector, when a relay is off. The voltage conversion device is also configured to estimate a forward voltage of an upper arm diode and to perform output adjustment of the high voltage-system voltage detected by the high voltage-system voltage detector, based on a voltage calculated by subtracting the forward voltage from a power storage voltage detected by a power storage voltage detector, when the relay is on, a low voltage-system power line has no electric power consumption, and a voltage conversion circuit does not perform voltage conversion. The voltage conversion device is further configured to create a high voltage-system voltage correction map, based on results of the zero point adjustment and the output adjustment of the high voltage-system voltage.

Systems and methods are described herein for reducing the effects of magnetic field cross-coupling in a multi-conductor current sensor system. A current sensor system includes one or more current sensors, each positioned proximate to at least one conductor and spaced from at least one other conductor. Each conductor carries a current intended to be measured by a respective current sensor. The current sensors include one or more magnetic field sensing elements to generate a magnetic field signal indicative of a detected magnetic field. A characterization measurement is performed to determine the coupling between each current sensor and the respective current conductor and to determine the coupling between the current sensor and the other ones of the current conductors, by providing a reference current to each of the conductors and measuring the outputs at each of the current sensors. The characterization measurement can be used to generate a coupling matrix.