Abstract: A method for detecting electrically conductive targets in soil including the steps of: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; selecting at least two models, each approximating a form of a signal due to a different type of source; processing the receive signal using the at least two models to produce at least two independent signals, each representing a component of the receive signal due to a different type of source; and producing, based on at least two independent signals, an indicator output signal indicative of the presence of the electrically conductive target.

Abstract: A detection track includes a first detection element group that includes a plurality of first magnetic resistance elements arranged at a pitch ?/(2n) when an order to cancel target harmonic components among a plurality of harmonic components superimposed on a fundamental component of a detection signal for multi-pole magnetic pattern is assumed as n, and a second detection element group that includes a plurality of second magnetic resistance elements arranged at the pitch ?/(2n), a plurality of first dummy magnetic resistance elements arranged among the first magnetic resistance elements, and a plurality of second dummy magnetic resistance elements arranged among the second magnetic resistance elements.

Abstract: The present invention relates to a partial discharge sensor for a high-voltage insulation monitoring device comprising a housing and located in the housing a measurement circuit for measurement of partial discharges in a high voltage system to be tested and a coupling capacitor having one electrode connected to the measurement circuit and the other electrode to a first high voltage conductor to be connected to a high voltage line of the system to be tested, wherein it further comprises a calibration circuit located in the housing and comprising a calibration capacitor having one electrode connected to the calibration circuit and the other electrode connected to said first or a second high voltage conductor to be connected to a high voltage line.

Abstract: A voltage detection device includes: a plurality of voltage-detecting ICs installed in order to detect voltages of a plurality of blocks of a secondary battery, each of the voltage-detecting ICs being installed for each of the blocks; and an interruption control unit that controls interruption operations of the voltage-detecting ICs. After resetting all of the voltage-detecting ICs by transmitting a trigger signal to all of the voltage detecting ICs, the interruption control unit transmits a control signal in which an address of a voltage-detecting IC allowed to execute an interruption operation is designated. Each of the voltage-detecting ICs receives the control signal within a designated time set in advance, executes the interruption operation when an address of its own is designated, and is left reset when the address of its own is not designated.

Abstract: An occupant detection apparatus includes an electrostatic capacitance type sensor having a main electrode, a sub electrode and a guard electrode, an impedance measurement device that outputs an alternating current signal to measure an impedance, and an occupant discrimination device that discriminates an occupant. The guard electrode is provided oppositely to main electrode and not oppositely to the sub electrode. The impedance measurement device outputs an alternating current signal to pass the signal through the main electrode so as to measure a main impedance. Further, the impedance measurement device outputs the alternating current signal to pass the signal through sub electrode so as to measure a sub impedance. The occupant discrimination device discriminates the occupant based on an electrostatic capacitance component of the main impedance and a resistance value component of the sub impedance.

Abstract: Photovoltaic device comprising a photovoltaic generator comprising a number of photovoltaic cells, characterized in that it comprises at least one switch with a control device comprising a control capacitor (Ccde) and a control resistor (Rcde), linked to the switch so as to slow down the control of the opening of the switch, to allow at least one cell of the photovoltaic generator to switch from a short-circuit operating mode to an open-circuit mode, or vice versa.

Abstract: A first A/D converter converts an analog observed value, which corresponds to a power supply signal supplied to a power supply terminal of a DUT, into a digital observed value. By means of digital calculation processing, a digital signal processing circuit generates a control value that is adjusted such that the digital observed value matches a predetermined reference value. A first D/A converter supplies, via a power supply line to the power supply terminal of the DUT, an analog power supply signal obtained by performing digital/analog conversion of the control value. A load estimating unit applies a test signal containing a predetermined frequency component via the power supply line to a node via which the power supply terminal is to be connected, and generates a control parameter for the digital signal processing circuit according to the test signal and the observed signal.

Abstract: An A.C. power measuring apparatus includes a voltage detecting unit that detects voltage waveforms of each of phases of a set of insulated cables for supplying a three-phase A.C. power to a load, by performing a contactless measurement by electrostatic capacitance coupling, and a current detecting unit that detects current waveforms of the set of insulated tables, by performing a contactless measurement by electromagnetic induction coupling. The apparatus further includes a processing unit that computes a power to be supplied to the load, based on line-to-line voltage waveforms, the current waveforms, and prescribed voltage values, by normalizing the voltage waveforms of each of the phases so that as amplitude ratio of the voltage waveforms becomes in accordance with a grounding type of the three-phase A.C. power, and obtaining the line-to-line voltages of the set of three insulated cables based on the normalized voltage waveforms of each of the phases.

Abstract: A capacitive image sensor for detecting an input object includes a first substrate and a second substrate. A compressible region is defined between the first substrate and the second substrate. The first substrate is deflectable towards the second substrate. A transmitter electrode, receiver electrode, and bending effect electrode are disposed on the first substrate. The bending effect electrode is disposed between the transmitter electrode and receiver electrode and is configured to reduce a change in resulting signals detected from the receiver electrode caused by deflection of the first substrate towards the second substrate.

Abstract: A capacitive image sensor for detecting an input object includes a first substrate and a second substrate. A compressible region is defined between the first substrate and the second substrate. The first substrate is deflectable towards the second substrate. A transmitter electrode, receiver electrode, and bending effect electrode are disposed on the first substrate. The bending effect electrode is disposed between the transmitter electrode and receiver electrode and is configured to reduce a change in resulting signals detected from the receiver electrode caused by deflection of the first substrate towards the second substrate.

Abstract: A method for positioning a motor vehicle in relation to a primary element of a charging device disposed on a side of a roadway of the motor vehicle for contactless charging of an electric storage device of the motor vehicle, includes moving a secondary element of the charging device arranged on the motor vehicle and interacting with the primary element relative to the primary element by moving the motor vehicle on the roadway into a predetermined charging position, and determining with at least one sensor and at least one positioning element having at least two mutually different markers, when the secondary element has reached the predetermined charging position, by detecting the markers with the sensor.

Abstract: Magnetostrictive sensing systems and methods are disclosed. One such system comprises a magnetostrictive wire having first and second ends. A magnet is movable along a length of the magnetostrictive wire. An excitation device is operable to apply an electrical excitation signal to the magnetostrictive wire. A torsional motion sensor is operable to detect a torsional motion of the magnetostrictive wire. A reflective termination is configured to reflect the torsional motion of the magnetostrictive wire. A processor is in communication with the excitation device and the torsional motion sensor. The processor is programmed to (i) apply the electrical excitation signal to the magnetostrictive wire with the excitation device, (ii) identify whether the torsional motion detected by the torsional motion sensor has been reflected by the reflection termination, and (iii) calculate a position of the magnet along the magnetostrictive wire based on only the detected torsional motion reflected by the reflection termination.

Abstract: A multiplexed input/output (I/O) system detects leakage currents on a selected input channel. The system includes a leakage detection multiplexer connected to provide an output selected from one of a plurality of input channels. In addition, the leakage detection multiplexer provides as part of the output measured leakage currents associated with the selected input channel. Based on the detected leakage currents, a determination can made regarding whether the detected leakage currents have compromised the integrity of the multiplexer output. In addition, the detected leakage current can be used to compensate the output provided by the multiplexer to account for the presence of leakage currents on the selected channel.

Abstract: A method of testing an electrical junction between a first metallic element and a second metallic element in an aircraft current return network, said network comprising a plurality of metallic elements, each of which is connected to at least two other elements, said aircraft comprising at least one element made of a composite material connected to said network. The method is remarkable in that its use does not damage the composite structure of the aircraft.

Abstract: Embodiments of the subject method and apparatus relate to a sequence of noncontact Corona-Kelvin Metrology, C-KM, that allows the determination and monitoring of interface properties in dielectric/wide band gap semiconductor structures. The technique involves the incremental application of precise and measured quantities of corona charge, QC, onto the dielectric surface followed by determination of the contact potential difference, VCPD, as the material structure response. The V-Q characteristics obtained are used to extract the surface barrier, VSB, response related to the applied corona charge. The metrology method presented determines an intersection of the VCPD-QC characteristic obtained in the dark with the VOX-QC characteristic representing the dielectric response. The specific VSB-QC dependence surrounding the reference VFB value is obtained from this method and allows the noncontact determination of the dielectric interface trap density and its spectrum.

Abstract: A direct current transducer includes an open-loop Hall-effect sensor, a first ADC coupled to the open-loop Hall-effect sensor, a thermistor, a second ADC coupled to the thermistor, a manually controlled mode-selection device, a digital processor coupled to the first ADC and the second ADC, and digital memory coupled to the digital processor. The manually controlled mode-selection device is operative to develop an operating mode selection digital signal for a plurality of operating modes including a temperature-compensated direct current (DC) transducer mode and a calibration mode.

Abstract: An apparatus, that is particularly advantageous for compensating for the earth's magnetic field at a fluxgate current sensor. The apparatus and method actively compensate for local anomalies and loop mismatch at local segments distributed around closed loops of ferromagnetic material in order to null out sources of error that arise in the presence of an external magnetic field. External flux nulling circuits null the external magnetic flux at each of a plurality of associated pairs of diagonally opposite segments of coaxial closed loop cores. Each flux nulling circuit has a pair of diagonally opposite segment sensing coils and a pair of diagonally opposite segment cancellation coils. A flux detecting circuit detects the net magnetic flux in associated, diagonally opposite segments. A negative feedback control circuit drives the segment cancellation coils with a current to drive the flux detected by the segment detecting circuit to a minimum.

Abstract: A method and a system for three-phase detection of a three-phase electric device are provided. The system includes a testing circuit and a comparison module. The testing circuit generates two reference voltages by using the three phase voltages of the three-phase electric device. The two reference voltages are the first and second phase voltages with reference to the third phase voltage, respectively. Three-phase detection is performed by comparing the two reference voltages for a determined number of times. After testing is completed, the testing circuit is switched off by the comparison module, to save power.

Abstract: The invention is concerned with a tool and method for determining standoff from a formation though mud. The tool comprising a first electrode located at a distance from the formation for measuring a first impedance. A second electrode is located at a second distance from the formation for measuring a second impedance. A processing unit measures a difference between the first impedance and the second impedance, uses the difference to determine a conductivity of the mud and based thereon, determines the standoff of at least one of the first and the second electrode.

Abstract: A current detection circuit and a transformer current measurement system are offered, in which when elements and circuit, which cannot operate originally unless a transformer with small excitation inductance is used, are connected to a primary side of the transformer, even if the transformer, whose excitation inductance is large, is used, transformer current (primary current and secondary current) can be measured without deteriorating operations of the elements and circuit. [Means for solving] A current detector CT (current transformer) is in series connected to a primary winding 111 of a transformer 11, and an inductor La is in parallel connected to to a series connection of the current detector CT and the primary winding 111. And, secondary current I2 of the transformer 11 is measured based on a value of primary current IT detected by the current detector CT.