Abstract: Collect a full band capture spectral reading from a plurality of cable/fiber broadband network customer units (e.g., cable modems or equivalent optical units); for each of the cable/fiber broadband network customer units, construct an ideal spectral reading. For each of the cable/fiber broadband network customer units, subtract the ideal spectral reading from the full band capture spectral reading to obtain a resultant spectrum. For at least one of the cable/fiber broadband network customer units, identify a persistent deviation from zero in the resultant spectrum that does not match a known impairment type. Identify at least one new impairment type corresponding to the persistent deviation from zero. Remediation of the new impairment type can be carried out as appropriate, and/or a detection pattern can be deployed to identify future occurrences of the new impairment type.

Abstract: A signal processing circuit for a measurement instrument is described. The signal processing circuit includes an analysis circuit, a measurement input, and at least two parallel measurement channels. The parallel measurement channels are configured to process the input signal, thereby generating first and second complex-valued measurement signals. The analysis circuit is configured to determine first and second error quantities associated with the first and second complex-valued measurement signals, respectively. The analysis circuit is configured to determine a complex-valued average signal corresponding to a combined average of the first and second complex-valued measurement signals. The analysis circuit is configured to determine a combined error quantity based on the complex-valued average signal. The analysis circuit is configured to determine a comparison quantity based on the combined error quantity as well as based on the first error quantity and/or the second error quantity.

Abstract: The invention relates to a method and system for monitoring strain data on a subsea wellhead and associated tubing especially during a drilling or completion operation when the wellhead is connected via a riser to a drilling rig. The bending stresses on the wellhead assembly can be modelled and monitored, based on strain data from strain gauges attached to the conductor, surface casing and possibly also inner tubing. The strain gauges are located where maximum bending stresses occur, at around seafloor level. Data from the strain gauges is transmitted by radio to a receiver unit on the template, from which it may either be transmitted to the surface or stored and retrieved by divers or subsea vehicles.

Abstract: A resistivity measuring tool used in a drillstring having a drill bit on a distal end for drilling a wellbore in a formation includes a tool body having a longitudinal axis, a transmitting antenna, and a receiving antenna. The receiving antenna includes an antenna body having a longer axis disposed longitudinally in the tool body, and a wire coil having a central axis disposed around the antenna body, wherein the wire coil central axis is substantially perpendicular to the longer axis of the antenna body, and wherein the wire coil is configured to generate a magnetic moment orthogonal to the tool body longitudinal axis. The transmitting antenna is configured to transmit electromagnetic energy into the formation and induce a voltage signal related to a parameter of the formation in the receiving antenna.

Abstract: Provided is a method for determination of a location of a short circuit fault in a generator arrangement, wherein the generator arrangement includes an electrical machine and at least one channel, wherein the or each channel includes a breaker, a converter unit and a set of stator windings of the electrical machine connected to the converter unit via the breaker, wherein upon an occurrence of a short circuit in a channel, the connection between the set of stator windings and the converter unit is interrupted by opening the breaker, wherein depending on at least one measured signal of a measurand, wherein the measured signal is measured by at least one sensor of the electric machine and wherein the measurand describes a torque ripple of the electrical machine, either the electrical machine or the converter unit of the channel is determined as location of the short circuit fault.

Abstract: A method is provided for checking the plausibility of insulation monitoring of a high-voltage system (100) of an electric vehicle during the charging of a traction battery of the electric vehicle. The electrical insulation of the high-voltage system (100) is monitored by an insulation monitoring device (101), and a check is carried out cyclically to determine whether a further insulation monitoring device is active on a high-voltage bus of the high-voltage system (100).

Abstract: A method for monitoring an ideal diode comprises controlling a source-gate voltage of a MOSFET of the ideal diode such that the ideal diode can be changed between an off and an on state with a first target value for a source-drain voltage. To detect error states, the source-drain voltage and the source-gate voltage are measured. A check is carried out to determine whether the source-drain voltage reaches the first target value within predefined error limits in the on state. A test mode is carried out, in which a second target value, smaller than the first target value, is set for the source-drain voltage. A check is carried out to determine whether the source-gate voltage reaches an upper threshold value when the test mode is being carried out. An error signal is output when the first target value and/or the upper threshold value is/are not reached.

Abstract: A device, system, and method are provided for providing vibration data for rotating machinery. A sensor device is provided as a one-piece unit that is mechanically mounted to a pump. The sensor includes a vibration sensor, a processor, a wireless communications interface for exchanging data with a user device, and an internal battery. The processor is configured to receive a measurement request from the user device via the wireless communications interface. In response, the processor is further configured to configure the vibration sensor, receive data samples for multiple axes from the vibration sensor, and calculate a component velocity root mean square (vRMS) value, from the data samples, for each of the multiple axes. The processor may combine the component vRMS values into a sample vRMS value, and send a final vRMS value, based on the sample vRMS value, to the user device via the wireless communication interface.

Abstract: A circuit for through silicon via (TSV) detection includes a TSV to be tested, an equivalent adjustable resistor and a reverse output circuit. A first terminal of the TSV to be tested is connected to a second terminal of the equivalent adjustable resistor, and a second terminal of the TSV to be tested is grounded. An input terminal of the reverse output circuit is connected to the first terminal of the TSV to be tested. The method includes: adjusting a resistance value of the equivalent adjustable resistor to a preset first resistance value, and keeping a voltage of a first terminal of the equivalent adjustable resistor at a preset voltage value, the first resistance value is a maximum resistance value of an equivalent resistor corresponding to the TSV to be tested when the TSV to be tested is normal.

Abstract: The present disclosure is a system and method for measuring AC residual current and DC residual current using a singular type-B residual current monitoring device. The system includes a sensor comprising two or more cores that measure residual AC current and residual DC current from two or more current carrying conductors through the cores that carry AC current and DC current. The system includes a controller that sends both an AC excitation current to the cores, as well as a DC nulling current that cancels out the DC residual current, allowing the system to then accurately measure the AC residual current. The system also includes a self-test feature that injects known quantities of both AC current and DC current through the sensor to determine if the sensor is functioning properly.

Abstract: A display panel includes a plurality of first pixels on a first region, a plurality of second pixels on a second region, and a test circuit. The second region has a transmittance less than a transmittance of the first region. The test circuit provides one or more test voltages to the first pixels and the second pixels. The test circuit includes a first test circuit and a second test circuit. The first test circuit provides the first pixels with a first voltage, and the second test circuit provides the second pixels with a second voltage different from the first voltage.

Abstract: A fail-safe operating method for a decentralized power generation plant DG includes determining a leakage capacitance of a generator of the DG before connecting the DG. The method also includes comparing the determined leakage capacitance with a predetermined first limit value, and connecting the DG to a grid only if the determined leakage capacitance is smaller than the predetermined first limit value. A decentralized power generation plant is configured to perform the method.

Abstract: The invention relates to a circuit assembly (10) for fault detection in an ungrounded high-voltage system (20) having a connected inverter (4) and having at least one resistor (5) between a high-voltage potential (7a, 7b) of the high-voltage system (20) and a reference potential (8), the circuit assembly (10) comprising: a sensing circuit (1), which is designed to tap a voltage from the resistor (5), to generate a first measurement value therefrom and to provide the first measurement value at an output (1c, 1d); and an evaluation device (2), which is connected to the output (1c, 1d) of the sensing circuit (1), the evaluation device (2) being designed to compare the first measurement value with a first limit value and to output a first signal if the first measurement value exceeds the first limit value.

Abstract: Interstory drift measurement systems and methods of using the same can include a laser beam source configured to emit a beam having at least a first width in a first direction and a sensor system comprising a plurality of diodes spaced apart from one another in the first direction. The plurality of diodes can include a first diode and a diode spacing width in the first direction as measured between a centerline of the first diode and a centerline of an adjacent diode of the plurality of diodes in the first direction. The beam width in the first direction is at least two times the diode spacing width.

Abstract: A precision magnetometer for detecting magnetic fields parallel to a static field B0 in which the magnetometer itself is immersed; this magnetometer is operative in the frequency range of the field b1 ranging from 10 MHz to 1 GHz. Another object is a technique for using the presented magnetometer.

Abstract: A method and system for determining the state of one or both of an electrical conductor or an associated system utilizing a non-invasive sensor and a magnetostrictive response from the current of the electrical conductor. The method includes providing a sensor assembly including a magnetostrictive resonator sensor and a signal detector. A state of one or both of the electrical conductor or the associated system is determined with the fault detector in response to a first frequency profile and a second frequency profile obtained with the magnetostrictive resonator sensor. A fault monitoring system utilizing a magnetostrictive resonator sensor is also disclosed.

Abstract: Disclosed are methods and devices for calibration in the field of optical sensors, e.g. characterizing and calibrating an optical sensor chip. In order to address complexity of sensor data with high accuracy the optical sensor, e.g. an optical sensor is not provided as an already calibrated unit. Rather, sensor response data may be recorded in a defined or standardized environment, e.g. at a production line, and with high precision. This high standard sensor response data can be obtained on a per device basis and, thus, is referenced with an unambiguous chip identification number, chip ID. The sensor data is complemented with a dedicated calibration algorithm which can be tailor-made to fit the optical sensor or the optical sensor chip. In order to retrieve the sensor response data and the calibration algorithm both can be made available by means of the chip ID, for example.

Abstract: A measuring method according to an exemplary embodiment includes acquiring a temperature by a temperature sensor at a first time, and acquiring a first parameter that sets an admittance of a phase adjustment circuit. The measuring method includes acquiring a second parameter corresponding to the temperature acquired at the first time. The second parameter is generated based on a second parameter group that is pre-stored. The measuring method includes acquiring a correction parameter group by correcting a second parameter group to correspond to the first parameter based on the first parameter and the second parameter.

Abstract: A monitoring circuit (2) for an interlock system (1), said interlock system comprising a first monitoring line (3), a second monitoring line (4), and at least one line bridge (5), by means of which the monitoring lines (3, 4) are electrically conductively connected in a closed state of the interlock system (1), said monitoring circuit comprising a signal generation device (11) which is configured for generating a monitoring signal for the first monitoring line (3) which alternates between a first monitoring voltage and a second monitoring voltage and which is referenced to a reference potential, and a signal evaluation device (17) by means of which a voltage profile (43, 48 to 51) which is referenced to the reference potential is detectable on the second monitoring line (4), wherein the signal evaluation device (17) is configured for determining a fault on one of the monitoring lines (3, 4) which is caused by a fault voltage referenced to the reference potential, and/or a fault in the monitoring circuit (2) b

Abstract: A measuring device includes a first measuring port connected to an optical interface which can be connected to an optical input or output of a device under test (DUT). The device includes a second measuring port which can be connected to a radio frequency (RF) input or output of the DUT. The optical interface is connected to the optical input of the DUT and the second measuring port is connected to the RF output of the DUT. The first measuring port generates an analog measuring signal and provides it to the optical interface. The optical interface generates an optical measuring signal based on the analog measuring signal and provides it to the optical input of the DUT. The second measuring port receives an analog measuring signal generated by the DUT based on the optical measuring signal. The processor determines S-parameters of the DUT based on the two analog measuring signals.