Abstract: An isolation amplifier of an embodiment includes: a primary circuit including an encoder configured to encode an input signal and output the encoded input signal and an anomaly detection circuit configured to detect anomaly having occurred to the input signal and generate a detection signal; an isolation unit configured to insulate the primary circuit from a secondary circuit; an output circuit configured to generate an output signal corresponding to the input signal; and an anomaly-input sensing-output circuit configured to generate an output signal from the secondary circuit by changing the output signal from the output circuit based on the detection signal.

Abstract: A capacitive sensor includes a first conductive structure; a second conductive structure that is counter to the first conductive structure, wherein the second conductive structure is movable relative to the first conductive structure in response to an external force acting thereon, wherein the second conductive structure is capacitively coupled to the first conductive structure to form a first capacitor having a first capacitance that changes with a change in a distance between the first conductive structure and second conductive structure; a signal generator configured to apply a first electrical signal step at an input or at an output of the first capacitor to induce a first voltage transient response at the output of first capacitor; and a diagnostic circuit configured to detect a fault in the capacitive sensor by measuring a first time constant of the first voltage transient response and detecting the fault based on the first time constant.

Abstract: In one embodiment, an apparatus includes: an oscillator to output a clock signal on a first line; a switch coupled to the first line; and a voltage divider coupled to the switch. The switch may be controlled to output the clock signal through the voltage divider via the first line to a pin in a non-reset mode and prevent the clock signal from being provided to the pin in a reset mode.

Abstract: An apparatus includes a moveable electrode which moves along an interstitial pathway defined by four fixed electrodes. The first and second fixed electrodes are separated by a first distance. The third and fourth fixed electrodes are separated by a second distance and adjacent to the first and second fixed electrodes, respectively. A capacitance sensing circuit coupled to the four fixed electrodes determines a first capacitance using the first and second fixed electrodes and a second capacitance using the third and fourth fixed electrodes. In some examples, the apparatus also comprises fifth and sixth fixed electrodes separated by a third distance and orthogonal to the first and second fixed electrodes and seventh and eighth fixed electrodes separated by a fourth distance and orthogonal to the third and fourth fixed electrodes. The fifth and seventh fixed electrodes are adjacent, and the sixth and eighth fixed electrodes are adjacent.

Abstract: Methods of performing diagnostic tests on electroencephalography (EEG) recording devices comprising at least one stimulator coupled with a plurality of EEG electrode recording channels and corresponding recording channel connectors are performed by a test fixture comprising a plurality of resistors coupled with one or more of the EEG electrode recording channels and corresponding recording channel connectors. The methods include performing an impedance test for determining if each EEG recording channel of the EEG recording device has a predefined impedance, performing a channel uniqueness test for each EEG recording channel, performing a test for verifying the state of a switch of the stimulator of the EEG recording device, and performing a test for verifying connector IDs of the recording channel connectors connecting the EEG electrodes to respective EEG recording channels.

Abstract: In one aspect the invention provides a sensing apparatus comprising a set of N capacitive sensors connected over a single physical channel provided by two terminals, the apparatus comprising: a sensing array having a first capacitive sensor and N?1 parallel capacitive sensors each connected in parallel with first capacitive sensor, each capacitive sensor having electrodes separated by a dielectric to provide a capacitance which is able to vary with deformation to provide sensing, the array having a set of N?1 resistances each being in series with a respective one of the N?1 parallel capacitive sensors; a solution module operable to determine the capacitance of each capacitive sensor by finding solutions for a vector function equating reactance measured at the two terminals to an analytical model for impedance and/or reactance of the circuit seen at the two terminals, wherein the analytical model comprises N capacitances, each connected in parallel with each other, and comprises N series resistances each conne

Abstract: A ground fault directionality detection method, a ground fault directionality detection device and a computer-readable storage medium for a small current grounding system are disclosed. The ground fault directionality detection method comprises sampling at least a part of a current signal to obtain a numerical matrix; providing the numerical matrix as an input to a ground fault directionality detection neural network; calculating a label vector corresponding to the numerical matrix by the ground fault directionality detection neural network, wherein the label vector indicates whether the current signal is an upstream fault current signal or a downstream fault current signal; receiving a ground fault confirmation signal by the ground fault directionality detection neural network; and outputting the label vector by the ground fault directionality detection neural network when the ground fault confirmation signal indicates that the current signal is a ground fault current signal.

Abstract: Disclosed is a service operation method for managing energy data for each tenant. More particularly, the service operation method monitors energy consumption consumed in a specific space that a tenant manager desires to manage using an individualized energy management service user interface (UI) according to a service development/production environment set by a manager terminal and visualizes a status of use of energy for each specific space from a monitoring result.

Abstract: A device includes a plurality of resistive voltage dividers connected operationally between a supply line and an electric grounding terminal so as to form separate respective connection paths to the electrical grounding terminal, and a processing assembly connected to the outputs of the voltage dividers and designed to generate signals or data indicating the voltage of the supply line. The processing assembly includes a plurality of separate processing modules each one coupled to a respective one of the connection paths and designed to generate respective signals or data indicating the voltage of the supply line.

Abstract: A method for remotely measuring pressure of a fluid in a container includes determining a spatial location of first and second resonant radiofrequency antenna elements located on a radiofrequency identification (RFID) tag located in the container. The first antenna element is positioned in a fixed position on the RFID tag and the second antenna element is positioned on a deformable element configured to be deformed in at least one dimension based on pressure from the fluid. The spatial location is determined from a radar image generated based on reflected radiofrequency beams from a scan area and re-radiated radiofrequency beams from the first and second antenna elements located within the scan area. A pressure value is determined for the fluid based on the spatial location of the first and second antenna elements. Systems and methods of remotely measuring pressure using passive RFID tags are also disclosed.

Abstract: A grounded neutral fault detector that includes induction circuits and a controller is provided. The controller is configured to determine a frequency of a test signal by measuring load noise based on a first leakage signal corresponding to a first current imbalance between the line conductor and the neutral conductor for the load without the test signal being injected, analyzing a frequency spectrum of the load noise, and selecting the frequency of the test signal. The controller is further configured to inject the test signal at the selected frequency to the neutral conductor, measure impedance of a current loop formed by a potential grounded neutral fault based on a second leakage signal corresponding to a second current imbalance with the test signal being injected, and determine a grounded neutral fault.

Abstract: A system senses analytes through one or more sensors that detect or measure a physical characteristic. The one or more sensor generate a spectroscopic-data signal corresponding to the detection. An edge device communicatively couples the one or more sensors that communicatively couples a wide-area network coupling a cloud service. The edge device includes a data acquisition device that receives spectroscopic data signals from the one or more sensor and a processor that processes the spectroscopic-data signals to identify an analyte. The edge device also includes a transceiver that transmits data identifying the analytes to the cloud service.

Abstract: Aspects of the present disclosure are directed to systems and methods for detecting Partial Discharge (PD) associated with wide bandgap semiconductor-based electrical drive systems in real time. In one aspect, signals, including noise associated with drive switching and other background noises are detected using a sensing device. The signals are received by a real-time spectrum analyzer. The spectrum analyzer transforms the signals into the frequency domain and determines or registers the frequency domain profiles of the signals. The spectrum analyzer performs signal discrimination between at least one other signal included within the signals and switching noise based on their frequency domain profiles. Based on the discrimination analysis, the presence of a partial discharge signal may be detected. A physics-based signal discrimination approach can also be used for signal discrimination, for example utilizing pressure-dependency of characteristics of a PD signal.

Abstract: Methods for fabricating a sensor module for detecting carbon dioxide leakage from a subsurface reservoir are disclosed. The methods include attaching anodic aluminum oxide porous membrane onto a first conductive electrode to form an anodic aluminum oxide template; initiating growth of a plurality of TiO2 nanotubes inside the AAO template using an atomic layer deposition process; removing the anodic aluminum oxide template from the first metal electrode leaving the plurality of TiO2 nanotubes on the first conductive electrode; attaching a second conductive electrode to the plurality of TiO2 nanotubes; connecting the first and the second conductive electrodes with an electric line to form a sensor; providing a rollable sheet of non-conductive material; and attaching a plurality of sensors to the rollable sheet of non-conductive material forming the sensor module.

Abstract: An inrush current detection method, an inrush current detection device and a computer-readable storage medium for a transformer are disclosed. The inrush current detection method includes sampling at least a part of a current signal of the transformer to obtain a numerical matrix; providing the numerical matrix as an input to an inrush current detection neural network; and calculating and outputting a label vector corresponding to the numerical matrix by the inrush current detection neural network, wherein the label vector indicates whether the current signal is an inrush current.

Abstract: Methods and devices for obtaining approximate property data from the aqueous liquid phase of a multiphase fluid produced from a well. The device includes a separation vessel; a demulsifier source; a fresh water source configured to dilute an aqueous liquid phase sample; a water analysis unit configured to receive and analyze the diluted aqueous liquid phase sample, the water analysis unit comprising an analytical cell and at least one probe, the at least one probe having a membrane-coated sensor tip wherein the membrane-coated sensor tip having a membrane coating that comprises a polar material, the at least one probe being configured to measure a property of the diluted aqueous liquid phase sample to obtain diluted aqueous liquid phase sample data; a processing unit configured to calculate approximate aqueous liquid phase data accounting for the measured amount of fresh water used to dilute the measured sample of the aqueous liquid phase.

Abstract: A short circuit detector is included in a power converter, the power converter being configured to supply power to a load via a first arm including a first semiconductor switch and a second arm including a second semiconductor switch. The short circuit detector includes a Rogowski coil; and a detection circuit configured to detect a short circuit in one of the first arm, the second arm and the load, based on a detection signal obtained from the Rogowski coil. The Rogowski coil is inserted into both: (i) first current path through which a first current flows in common with the first arm and the load, and (ii) a second current path through which a second current flows in common with the second arm and the load.

Abstract: A wiring circuit board includes an alignment mark layer. The alignment mark layer includes a first alignment mark and a second alignment mark. The condition A or the condition B is satisfied. Condition A: The first alignment mark has a first portion (a first starting point portion or a first center of gravity portion). The second alignment mark has a second portion (a second starting point portion or a second center of gravity portion). Condition B: The first alignment mark has the first portion, and the second alignment mark does not have the second portion, or the first alignment mark does not have the first portion, and the second alignment mark does not have the second portion.

Abstract: The present disclosure describes a method that includes: accessing production logs at a well location of the carbonate reservoir, the production logs comprising data encoding a flow meter profile and a ratio of water and oil (WOR) at each depth of a range of depths; accessing measurements of core samples extracted from each depth within the range of depths; based on the measurements of core samples, determining a relationship of permeability and porosity at each depth within the range of depths; based on the production logs, analyzing the WOR to determine a derivative WOR? (dWOR/dt) at each depth within the range of depths; and characterizing at least one productive zone at the well location based on a combination of the WOR, the WOR?, the flow meter profile, and the relationship of permeability and porosity at each depth within the range of depths.

Abstract: A multicore cable inspection method of specifying a correspondence relationship among ends of insulated electric wires exposed from both ends of a multicore cable, the method including: inputting, by capacitance coupling, an inspection signal to the end of the insulated wire to be inspected among the ends of the insulated wires exposed at the one end of the multicore cable; inputting, by the capacitive coupling, each of first and second signals, each of which has a phase different from the inspection signal, to the ends of the two insulated wires other than the insulated wire to be inspected; measuring a voltage of an output signal outputted from the capacitive coupling from each end of the insulated wires exposed at the other end of the multicore cable; and specifying the other-side end of the insulated wire to be inspected. At this time, an amplitude of a signal obtained by adding the inspection signal and the first and second signals is smaller than that of the inspection signal.