Subscribe: Untitled
http://www.freepatentsonline.com/rssfeed/rssapp324.xml
Added By: Feedage Forager Feedage Grade B rated
Language: English
Tags:
circuit  coil  configured  current  device  field  includes  magnetic  method  power  probe  sensor  signal  system  test  voltage 
Rate this Feed
Rate this feedRate this feedRate this feedRate this feedRate this feed
Rate this feed 1 starRate this feed 2 starRate this feed 3 starRate this feed 4 starRate this feed 5 star

Comments (0)

Feed Details and Statistics Feed Statistics
Preview: Untitled

Untitled





 



PHOTOELECTRIC CONVERSION ELEMENT EVALUATION APPARATUS

Thu, 25 Aug 2016 08:00:00 EDT

A photoelectric conversion element evaluation apparatus includes: a probe light source that irradiates a photoelectric conversion element as the object of measurement with probe light; a pump light source that irradiates the photoelectric conversion element being irradiated with the probe light with pulsed pump light; and a light receiving element that detects time dependency of a change in an amount of the probe light obtained from the photoelectric conversion element.



SYSTEM AND METHOD FOR MONITORING A STATE OF HEALTH OF A BATTERY SYSTEM

Thu, 25 Aug 2016 08:00:00 EDT

Systems and methods for monitoring a state of health of a battery are disclosed. The state of health of the battery may be determined based on an internal resistance of the battery. The state of health of the battery may be determined based on a measured terminal voltage of the battery, a measured current of the battery, a temperature of the battery, and a state-of-charge of the battery.



METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, AND PROBE CARD

Thu, 25 Aug 2016 08:00:00 EDT

Reliability of an electrical test of a semiconductor wafer is improved. A method of manufacturing a semiconductor device includes a step of performing an electrical test of a semiconductor element by allowing contact portions (tips) of a force terminal (contact terminal) and a sense terminal (contact terminal) held by a probe card (first card) to come into contact with an electrode terminal of a semiconductor wafer. In the step of performing the electrical test, the contact portions of the force terminal and the sense terminal move in a direction away from each other after coming into contact with the first electrode terminal.



METHOD AND SYSTEM FOR TESTING OLED DISPLAY DEVICE

Thu, 25 Aug 2016 08:00:00 EDT

The present disclosure provides a method and a system for testing an OLED display device. The method includes steps of: applying a testing signal to the to-be-tested OLED display device; acquiring a measured distribution image for a testing region of the OLED display device to which the testing signal is applied; comparing the measured distribution image with a corresponding calibrated distribution image so as to obtain a comparison result; determining whether or not there is a back plate abnormal point at the testing region in accordance with the comparison result; and when the comparison result indicates that there is a back plate abnormal point at the testing region, determining a position of the back plate abnormal point on the OLED display device.



DEBUGGING METHOD FOR OVERDRIVE TABLE

Thu, 25 Aug 2016 08:00:00 EDT

A method for debugging an overdrive table is disclosed. The method comprises the steps of establishing debugging conditions for debugging overdrive gray-scale values in overdrive table of different primary colors according to a partition mode of a liquid crystal display device, backlights of two color fields, and a refresh rate of the backlight. According to the method, various factors which influence the display effect of the liquid crystal display panel are taken into consideration when the overdrive table is debugged, whereby the accuracy of the overdrive table can be improved significantly, and a better display effect can be achieved.



DOWNHOLE DETECTION TOOL

Thu, 25 Aug 2016 08:00:00 EDT

The present invention concerns a downhole cable or control line detection tool. More particularly, but not exclusively, this invention concerns a method and apparatus for the downhole detection of a cable or control line associated with the external wall of a well casing. A downhole tool for the detection of downhole cable or control lines is provided. The downhole tool comprises an eddy current sensor, the eddy current sensor being arranged to be proximate to the internal wall of a well casing. The eddy current sensor is arranged for pulsed operation. The downhole tool further comprises a mechanism for rotating the eddy current sensor, with an axis of rotation parallel with the longitudinal axis of a well casing.



DETECTING SENSOR ERROR

Thu, 25 Aug 2016 08:00:00 EDT

Sensor error detection with an additional sensing channel is disclosed herein. First, second, third sensing elements can be disposed at angles relative to one another. In some embodiments, the first, second, and third sensing elements can be magnetic sensing elements, such as anisotropic magnetoresistance (AMR) sensing elements. Sensor data from first, second, and third sensing channels, respectively having the first, second, and third sensing elements, can be obtained. Expected third sensing channel data can be determined and compared to the obtained third sensing channel data to indicate error.



A method, a calibration unit and a system for determining system errors and power values for the calibration of a network analyser

Thu, 25 Aug 2016 08:00:00 EDT

A method and a system for determining system errors and power values for the calibration of a network analyser (2) containing several test ports (11, . . . , 1i, 1j, . . . , 1n) connects the individual test ports (11, . . . , 1i, 1j, . . . , 1n) in each case sequentially to a short calibration standard (3), to an open calibration standard (4) and to a power detector (5), and measures a signal reflected from the short calibration standard (3), from the open calibration standard (4) and from the power detector (5) in the case of an excitation of the respective test port with a measured excitation signal. Following this, system errors for every test port (11, . . . , 1i, 1j, . . . , 1n) are determined from the respectively measured excitation signal and the respectively measured reflected signals, and, finally, the power value of the excitation signal is measured at least at one test port (11, . . . , 1i, 1j, . . . , 1n) by the power detector (5) connected in each case to this test port (11, . . . , 1i, 1j, . . . , 1n).



MAGNETIC RESONANCE IMAGING APPARATUS

Thu, 25 Aug 2016 08:00:00 EDT

In one embodiment, an MRI apparatus includes a gradient generation circuit configured to apply a gradient pulse according to a pulse sequence in which application of an RF pulse and application of the gradient pulse are included; and an RF transmission circuit configured to (a) perform modulation on a controlled output waveform of the RF pulse in such a manner that the controlled output waveform of the RF pulse follows time variation of a magnetic resonance frequency caused by time variation of an eddy-current magnetic field estimated from a waveform of the gradient pulse and (b) apply the RF pulse subjected to the modulation to an object.



System and Method for Controlling Motion Effects in Magnetic Resonance Imaging (MRI) Images

Thu, 25 Aug 2016 08:00:00 EDT

A system and method for generating magnetic resonance imaging (MRI) images is provided. The MRI system is directed to perform the dynamic contrast enhanced imaging study of the subject by exciting a two-dimensional (2D) slice within a portion of a field of view (FOV) of the MRI system and acquiring imaging data from the 2D slice by sampling k-space in a pseudorandom manner using sampling trajectories extending between a center of k-space and peripheral areas of k-space. Thereafter, the 2D slice is slid to another portion of the FOV at a velocity selected to be greater a velocity of the motion of the subject and the process is repeated for each of a plurality of 2D slices to create images of the subject where artifacts induced by the motion of the subject are reflected as geometric distortions.



GENERATING MOTION INFORMATION FOR AN AT LEAST PARTIALLY MOVING EXAMINATION REGION

Thu, 25 Aug 2016 08:00:00 EDT

A method for generating motion information for an at least partially moving examination region includes outputting at least one first excitation signal with a first frequency band. The first excitation signal is picked up with a receive coil arrangement of a magnetic resonance system. The at least one coil of the receive coil arrangement is configured to pick up a receive frequency band that includes the first frequency band. At least one item of motion information for the examination region is determined from the picked up first excitation signal.



IN-FLOW SIGNAL REDUCTION FOR T1 WEIGHTED IMAGING IN A MAGNETIC RESONANCE IMAGING SYSTEM

Thu, 25 Aug 2016 08:00:00 EDT

An magnetic resonance apparatus 100 comprises dummy-slice defining unit 93. The dummy-slice defining unit 93 defines a dummy slice a in a region lying in a z-direction with respect to a group gr1, and a dummy slice b in a region lying in a (−z)-direction with respect to the group gr1. The dummy-slice defining unit 93 also defines a dummy slice c in a region lying in the z-direction with respect to a group gr2, and a dummy slice d in a region lying in the (−z)-direction with respect to the group gr2. The dummy-slice defining unit 93 further defines the dummy slices a, b, c, d so that the slice thickness of the dummy slices a, b, c, d is greater than that of slices L1 to L12.



OPEN MAGNETIC RESONANCE IMAGING

Thu, 25 Aug 2016 08:00:00 EDT

Embodiments of the invention are directed to a method for designing the arrangement of superconducting windings for an open MRI system capable of supporting the imaging sequences for CE-BMRI and to a method of coil fabrication that can make a practical magnet from the design.



METHOD AND DEVICE FOR CONTROLLING THE TEMPERATURE OF A FLOW OF FLUID INTENDED TO BE USED BY AN NMR ANALYSIS PROBE, AND CORRESPONDING NMR ANALYSIS SYSTEM

Thu, 25 Aug 2016 08:00:00 EDT

The method comprises an initial cooling step (E0) during which the temperature (T_ECH) of the heat exchanger (30) is lowered and, at the same time, the flow rate of the said first flow (FLS) is set to an initial flow rate. Following the initial cooling step (E0), an operation of circulating the first flow (FLS) is initiated (E1) and during this the said first flow (FLS) passes through a heat exchange (30) at a first flow rate which is higher than the initial flow rate. The initial flow rate of the first flow may be set to zero or to a value set so that the pressure inside the said circuit is greater than or equal to the pressure outside the said circuit.



MR COIL

Thu, 25 Aug 2016 08:00:00 EDT

An MR coil is provided including at least one antenna element. The antenna element has at least one expandable conductor section with a plastic cover and a core including conductive fluid.



STATIC MULTIPLE-SAMPLE NMR PROBE

Thu, 25 Aug 2016 08:00:00 EDT

A static solid-state nuclear magnetic resonance (NMR) probe includes multiple probe subunits each configured for holding a sample. Each probe subunit includes at least an associated magic angle spinning (MAS) module, a radio-frequency (RF) coil and an RF transmission line together defining an RF circuit. Each of the multiple probe subunits is individually held in a conducting housing isolating the RF circuit of the each of the probe subunit from any other of the plurality of probe subunits. The static solid-state NMR probe may include four or more probe subunits including four or more MAS modules.



METHOD AND MAGNETIC RESONANCE APPARATUS FOR DETERMINING ABSOLUTE RECEIVE SENSITIVITY MAPS FOR RECEPTION COILS

Thu, 25 Aug 2016 08:00:00 EDT

In a method and magnetic resonance apparatus for determining absolute three-dimensional reception sensitivity maps for reception coils in a scanner of the magnetic resonance, in particular a scanner having a basic magnetic field strength of at least 3 T, in the presence of a subject under examination that affects the reception sensitivity, spatially resolved subject parameters are determined, which specify electromagnetic properties of the subject under examination, and coil-geometry parameters are determined, which specify the spatial arrangement of the reception coils in the magnetic resonance scanner. The reception sensitivity maps are determined by simulation in a model specified by the subject parameters and the coil-geometry parameters.



RESISTIVE ELEMENT

Thu, 25 Aug 2016 08:00:00 EDT

A resistive element includes a resistive region in a semiconductor substrate, a first contact structure and a second contact structure. The semiconductor substrate includes a first main surface area. The resistive region extends in a lateral direction parallel to the main surface area and in a vertical direction perpendicular to the main surface area, and includes a first piezo-resistive coefficient for a current flow in the lateral direction and a second piezo-resistive coefficient for a current flow in the vertical direction. The first contact structure contacts a portion of a first face of the resistive region and the second contact structure contacts a portion of a second face of the resistive region. The resistive element generates a current flow distribution within the resistive region having a lateral component and a vertical component that results in a piezo-resistive coefficient of the resistive element.



MAGNETIC FIELD DETECTION SENSOR

Thu, 25 Aug 2016 08:00:00 EDT

A magnetic field detection sensor includes a magneto-impedance element configured to make use of the magneto-impedance effect, and a negative-feedback bias coil configured to apply a bias magnetic field to the magneto-impedance element. The magnetic field detection sensor is configured to detect an external magnetic field based on an output obtained by applying an alternating-current to the magneto-impedance element. The magneto-impedance element includes a non-magnetic substrate, and a magnetic thin-film that is provided on a surface of the non-magnetic substrate. The magnetic field detecting direction matches the longitudinal direction of the magneto-impedance element, and the magnetic thin-film is configured to have a magnetic anisotropy such that a direction of an axis of easy magnetization thereof matches the magnetic field detecting direction.



TRIAXIAL COIL SENSOR AND MAGNETIC FIELD MEASURING DEVICE INCLUDING THE SAME

Thu, 25 Aug 2016 08:00:00 EDT

Provided is a magnetic field measuring device including a first sensor unit which includes a first coil sensor configured to output a first sensor signal, a second sensor unit which includes a second coil sensor configured to output a second sensor signal and disposed in a direction perpendicular to the first coil sensor, a third sensor unit which includes a third coil sensor configured to output a third sensor signal and disposed in a direction perpendicular to the first and second coil sensors, and a digital signal processor outputs magnetic flux density based on a voltage difference between the first and fourth nodes, wherein the first to third sensor units respectively output first to third output signals in which specific voltages of the first to third sensor signals are maintained for a predetermined period of time.



PUSH-PULL BRIDGE-TYPE MAGNETIC SENSOR FOR HIGH-INTENSITY MAGNETIC FIELDS

Thu, 25 Aug 2016 08:00:00 EDT

The present invention provides a push-pull bridge-type magnetic sensor for high-intensity magnetic fields. The sensor comprises two substrates, magnetoresistive sensing elements, push arm attenuators, and pull arm attenuators. Magnetization directions of pinning layers of the magnetoresistive sensing elements located on a same substrate are parallel, and magnetization directions of pinning layers of the magnetoresistive sensing elements on different substrates are anti-parallel, wherein the magnetoresistive sensing elements on one substrate are electrically connected to one another to form push arms of a push-pull bridge, and the magnetoresistive sensing elements on the other substrate are electrically connected to one another to form pull arms of the push-pull bridge. The magnetoresistive sensing elements in the push arms and the pull arms are arranged in columns above or below the push arm attenuators and the pull arm attenuators. The sensor can be implemented in quasi-bridge, half-bridge, or full-bridge structures, and it has the following advantages: low power consumption, small offset, good linearity, wide operation range, the capability to operate in high-intensity magnetic fields, and twice the maximum sensitivity of a single-chip referenced bridge magnetic sensor.



APPARATUS AND METHOD FOR ESTIMATING POWER STORAGE DEVICE DEGRADATION

Thu, 25 Aug 2016 08:00:00 EDT

Switches change the resistance value of a charge/discharge circuit in a period from starting a discharging at an upper limit voltage until the voltage reaches a lower limit voltage. An electric charge estimator computes electric charge by time-integrating current from a start of the discharging to an arbitrarily determined time, and computes a relationship between electric charge and voltage of a power storage device. An internal resistance estimator computes internal resistance based on voltages and currents of the storage device at times when resistance values are different. An electric energy estimator computes a relationship between electric charge and open voltage based on electric charge, voltage, current and internal resistance of the storage device. During charging or discharging of the storage device, the electric energy estimator estimates the electric energy of the power storage device based on the electric charge, the open voltage, the internal resistance, and the charge/discharge current.



RESOLVER ABNORMALITY DETECTION APPARATUS

Thu, 25 Aug 2016 08:00:00 EDT

A resolver abnormality detection apparatus for a resolver having first and second secondary windings includes a first resistor section including a first pull-up resistor for pulling up the first secondary winding, a first pull-down resistor for pulling down the first secondary winding, a second resistor section including a second pull-up resistor for pulling up the second secondary winding and a second pull-down resistor for pulling down the second secondary winding, and first and second differential input sections connected across the first secondary winding and across the second secondary winding, respectively. The resolver abnormality detection apparatus detects presence of an abnormality in each of the first and second secondary windings based on outputs of the first and second differential input sections, a DC voltage between the first resistor section and the first differential input section and a DC voltage between the second resistor section and the second differential input section.



MONITORING MULTIPLE SUBSEA ELECTRIC MOTORS

Thu, 25 Aug 2016 08:00:00 EDT

According to some embodiments, two or more subsea motors are run simultaneously from a common topside frequency converter and a single set of three-phase cores within an umbilical cable. The subsea distribution system, which may include a subsea transformer distributes the power to the electrical motors. Current sensor and measuring electronics are used to measure current on one or more of the phases used to drive each motor. Measurement data is transmitted to the surface where an analysis system is used to detect possible load imbalance conditions between the motors.



IN-SITU TESTING OF SUBSEA POWER COMPONENTS

Thu, 25 Aug 2016 08:00:00 EDT

According to some embodiments, a testing system that is configured to test subsea power components in-situ while they are deployed on the sea floor. The testing system includes a top side testing system with test instruments, a multi-conductor work-over umbilical cable, and a subsea deployable test head. The test head can be deployed using and ROV and makes electrical connection to the subsea power component via wet connects.



METHOD AND SYSTEM FOR RESOLVING HOT SPOTS IN LIT

Thu, 25 Aug 2016 08:00:00 EDT

Localizing hot spots in multi layered device under test (DUT) by using lock-in thermography (LIT) where plural hot spots of electrical circuits are buried in the DUT at different depth layers from a bottom layer to a top layer, comprises applying test signals of multiple frequencies to the electrical circuits of the DUT for exciting the hot spots; imaging a top surface of the top layer of the DUT at timed intervals to obtain IR images of the DUT while the test signal is applied to the electrical circuits wherein the images are in correlation to a propagation of heat from the hot spots in the DUT; detecting the thermal response signals at the timed intervals from the images taken from the DUT; and determining changes in the appearance of hot spot images on the top surface of the DUT in relation to the frequencies of the thermal response signals.



SWITCHED PROBE CONTACT

Thu, 25 Aug 2016 08:00:00 EDT

Aspects of the present disclosure are directed to methods, apparatuses and systems involving a switched probe contact. According to an example embodiment, an apparatus includes logic circuitry, a first circuit to communicate signals with the logic circuitry, and a first bond pad connected to the first circuit via a first circuit path. The apparatus also includes a second circuit to communicate signals with the logic circuitry, and a second bond pad connected to the second circuit via a second circuit path. A probe contact is connected to the first bond pad and communicates signals with an external probe, and a switch circuit is connected to the probe contact and the second circuit path. The switch circuit communicates signals between the probe contact and the second circuit path by selectively connecting and disconnecting the probe contact to the second circuit path.



INTERCHANGEABLE TEST PANELS FOR USE IN AUTOMATED TEST EQUIPMENT

Thu, 25 Aug 2016 08:00:00 EDT

A method and assembly for an interchangeable test panel (ITP) for use in an automated test environment is provided. The ITP (i) occupies less than an entire surface of the housing, (ii) contributes to the housing's structural integrity when mounted to the housing, (iii) co-locates the through-holes required by a test program, and (iv) is removable and interchangeable, providing multi-DUT support. The ITP maximizes reuse of housings from one test program to another, provides multi-program support, and reduces cost.



Step Drill Test Structure of Layer Depth Sensing on Printed Circuit Board

Thu, 25 Aug 2016 08:00:00 EDT

A step drill test structure for a PCB and method for using the same is disclosed. In one embodiment, a test structure includes a drill path and a connection via. The drill path may include sensing pads on selected ones of a plurality of layers of the PCB (e.g., the non-surface layers). The sensing pads of a given drill path may be electrically conductive, while the remaining portion of the drill path is non-conductive. The sensing pads of each drill path may be electrically coupled to the connection via. The depth of a given layer at a particular drill path may be determined by drilling, using an electrically conductive drill bit, into the drill path and determining when an electrical connection is made between the drill bit and the connection via.



PARTIAL DISCHARGE SENSOR

Thu, 25 Aug 2016 08:00:00 EDT

With regard to a top loaded monopole antenna consisting of a disk 5 and a metal post 6, a partial discharge sensor includes a short-circuit conductor 10 joining the metal post 6 to a covering 7 and a coaxial line composed of a hole 8 and a metal terminal 9. This makes it possible to implement a partial discharge sensor that can suppress the induction of high voltage in the disk 5 and can achieve high sensitivity in a frequency band of a partial discharge to be detected.



SYSTEMS AND METHODS FOR INSULATION IMPEDANCE MONITORING

Thu, 25 Aug 2016 08:00:00 EDT

At least one aspect of the disclosure is directed to a power conversion unit (PCU). The PCU includes a power converter circuit, a safety detection circuit including a plurality of known network impedances and a switch having a first end coupled between two of the plurality of network impedances and a second end coupled to an output terminal, and a controller communicatively coupled to the safety detection circuit and the at least one power converter circuit. The controller may be configured to operate the switch, determine one or more voltage values of the safety detection circuit, and calculate an insulation impedance based at least in part on the one or more voltage values, a position of the switch, and the plurality of known network impedances.



TWO-WIRE RESISTANCE TERMINATED GROUND CHECK

Thu, 25 Aug 2016 08:00:00 EDT

A ground check monitoring device coupled to a trailing cable includes a voltage source and a switch. The trailing cable includes a first conductor, a second conductor, and a ground conductor. A resistive termination device is coupled between the first conductor and the ground conductor. A controller of the ground check monitoring device can toggle the switch between a first node of the first conductor and a second node of the second conductor. By measuring voltages at the first and second nodes, the ground check monitoring device can determine if the resistive termination device is shorted. Further, the controller can calculate resistance values of the first and second conductors and calculate a resistance value of the ground conductor. The calculated resistance values can be compared to expected values and the controller can signal a ground fault condition as appropriate based on the comparisons.



SYSTEMS AND METHODS OF DETECTING GROUND FAULTS IN ENERGY STORAGE AND/OR GENERATION SYSTEMS THAT EMPLOY DC/AC POWER CONVERSION SYSTEMS

Thu, 25 Aug 2016 08:00:00 EDT

Systems and methods of detecting ground faults in energy storage and/or generation systems that can detect ground faults on the DC and/or AC side of an energy storage/generation system, and generate warning signals and/or shutdown at least part of the system upon detection of such ground faults. The systems and methods can monitor levels of DC voltages and amplitudes of AC voltages occurring on the positive and negative side of a DC bus with respect to ground on the DC side of the energy storage and/or generation system, and process the monitored DC voltage levels and AC voltage amplitudes to detect a ground fault. Having detected such a ground fault, the systems and methods can generate a warning signal and/or shutdown at least part of the system, for example, by disconnecting a DC energy system from the DC bus, and/or by disabling a DC-to-AC bidirectional inverter included in the system.



Anomaly Diagnosis System, Method, and Apparatus

Thu, 25 Aug 2016 08:00:00 EDT

An anomaly diagnosis system is provided that includes: a current-value obtaining part 111 that obtains a value of an AC current inputted to or outputted from a device to be diagnosed; a frequency analyzing part 112 that converts the current values obtained at intervals into a frequency spectrum which correlates a current intensity with a frequency; an anomaly-judging-value calculating part 113 that calculates at intervals a frequency width of the frequency spectrum at a current intensity “As” satisfying As=m×At (0



AN ELECTRICAL CIRCUIT AND A METHOD FOR MEASURING THE POWER CONSUMPTION OF AN LED LIGHTING DEVICE

Thu, 25 Aug 2016 08:00:00 EDT

Embodiments consistent with the present disclosure provide an electrical circuit and a method for measuring the power and power consumption of an LED lighting device in real time. The circuit includes a controlling unit configured to process data; a display unit configured to display data received from the controlling unit and other components; a power supply and driving unit configured to supply power; an LED light source; and a RF unit configured to send data to remote terminals. The electrical circuit further includes an input power sampling unit, an output voltage sampling unit, and an output current sampling unit, which are configured to capture the real time input voltage, output voltage, and output current data respectively. Further, the controlling unit may determine the power and power consumption of the LED lighting device by using the received real time voltage and current data measurements, and referring to the stored input voltage-efficiency curves.



Attachment of leads having low thermoelectric errors

Thu, 25 Aug 2016 08:00:00 EDT

A method and a system are shown for attachment of leads for the electrical sensing of the voltage on conductive structures; connections attached per this invention have the valuable property of very low thermoelectric errors (due to Seebeck effect), among several other beneficial properties. The described method can be applied in the factory setting as well as in the field. This system is especially suitable for applications with high-precision resistive shunts utilized in the measurements of the electric current.



DEVICE AND METHOD FOR FAULT CURRENT DETECTION

Thu, 25 Aug 2016 08:00:00 EDT

The invention relates to a method and a device for detecting fault currents in a regulated DC intermediate circuit having an active power factor correction.



HIGH VOLTAGE FIBER OPTIC SENSOR FOR THE MEASUREMENT OF AN ALTERNATING ELECTRIC FIELD

Thu, 25 Aug 2016 08:00:00 EDT

A method for measuring an alternating electric field is disclosed. The method includes realizing a first diffraction grating in a first location, in a core of a silica-based optical fiber, and measuring a peak reflection wavelength of the first diffraction grating. The method also includes positioning the optical fiber along a direction having a non-zero component of an electrical field generated by an alternating voltage to be measured, and coupling a substantially monochromatic light to said optical fiber surrounded by the electric field. The method further includes measuring a parameter dependent on a shift of the peak reflection wavelength due to intrinsic mechanical deformation or refractive index change of the material in which the optical fiber and the diffracting grating are realized due to the alternating electric field, and calculating a value of the electric field causing such a measured deformation or refractive index change.



CAPACITIVE SENSOR TO SENSE AN ELECTRIC FIELD, SYSTEM AND METHOD TO OBTAIN IT

Thu, 25 Aug 2016 08:00:00 EDT

A capacitive sensor able to sense an electric field comprises a shielding tubular body which extends axially along its own axis, an electric field sensor positioned within said shielding tubular body, a source electrode,a mass of dielectric insulating material, in which the shielding tubular body (CTSa, CTSb) is formed by a mantle (Ma, Mb) having a plurality of first through openings (Aa, Ab), in which each of said first through openings (Aa, Ab) has an area comprised between a minimum of 0.1 mm2 and a maximum of 3 mm2. A system and a method to obtain said capacitive sensor.



SCANNING PROBE MICROSCOPE PROBER EMPLOYING SELF-SENSING CANTILEVER

Thu, 25 Aug 2016 08:00:00 EDT

A scanning probe microscope prober employs a self-sensing cantilever including a first wire through which a current is supplied to a probe, and a second wire used in a sensor circuit for detecting a deformation of the cantilever. The prober includes guard potential generation means for causing the second wire to be employed as a guard wire for the first wire, and second wire switching means for switching over the second wire to be used in a time division manner in one of a first period during which the second wire is used as a sensor, and a second period during which the second wire is held at a guard potential. The probe is moved, after obtaining a two-dimensional distribution in the first period, to a predetermined position on the basis of the two-dimensional distribution in the second period for measuring a current or voltage of the first wire.



Pipeline Condition Detecting Apparatus And Method

Thu, 25 Aug 2016 08:00:00 EDT

This invention relates to an apparatus and method for detecting the condition of a pipeline wall and analysis and estimate of the life of the pipeline by using an apparatus mounted externally of the pipeline and provided to be moved about and/or along at least a portion of the same. The apparatus includes at least one sensor array which includes a plurality of sensors axially offset to provide data for analysis and identification of pipeline defects.



EVALUATION TOOL FOR CONCENTRIC WELLBORE CASINGS

Thu, 25 Aug 2016 08:00:00 EDT

A system comprises one or more first electromagnetic coils configured to generate and direct first excitation signals toward a plurality of casings in a wellbore and receive response signals based on the excitation signals. The system also comprises a magnetic field source configured to generate a static magnetic field in a particular casing of the plurality of casings and a magnetometer configured to receive response signals based on the static magnetic field in the particular casing. The system further comprises one or more processors configured to receive a first response signal from the one or more electromagnetic coils, receive a second response signal from the magnetometer, and determine, based on the first response signal and the second response signal, whether a defect exists in the plurality of casings.



CHEMICAL SENSOR SYSTEM

Thu, 25 Aug 2016 08:00:00 EDT

An example approach and structure for providing a chemical sensor, having an electrode that may receive a fluid that is passed on towards a dielectric between the electrode and one or more other electrodes. A capacitance between the electrodes may be changed by the dielectric which is affected by a parameter of the fluid. Measuring a change of the capacitance may indicate a magnitude of the parameter. The electrode receiving the fluid may have one or more layers of metal particles that by design of the particles and their arrangement can result in determined pore sizes and routes through the electrode for a controllable porosity of the electrode.



APPARATUS AND METHOD FOR CHARACTERIZATION OF FLUIDS OR POWDERS BY ELECTRICAL PERMITTIVITY

Thu, 25 Aug 2016 08:00:00 EDT

In an embodiment, an apparatus for determining a value of a parameter related to electrical permittivity of a fluid includes capacitor formed by at least one electrode on a first side of a dielectric barrier and at least a part of an electrically conducting housing surrounding the barrier. The housing is adapted for being sealingly attached to a container so as to allow the fluid to be characterized to occupy a space between the housing and a side of the barrier, and an electronic relaxation type oscillator circuit is arranged on a miniature circuit board being fit to the housing and connected with the capacitor. An electrical power supply is connected to supply electrical power to the oscillator at an ultra-stable supply voltage, and a frequency measuring device coupled to the oscillator circuit for providing a measured oscillator frequency representing the electrical permittivity dependent on capacitance and resistance.



Apparatus and Method for Discriminating Bills Using RF Signals

Thu, 25 Aug 2016 08:00:00 EDT

A bill discrimination apparatus and method using a radio frequency (RF) signal that includes a transmission antenna radiating the radio frequency (RF) signal; a reception antenna receiving the RF signal from the transmission antenna; and a control unit providing the RF signal to the transmission antenna, and detecting a thickness of a bill, a state of the bill, or a presence of a foreign object on the bill based on a voltage of the RF signal transmitted through the bill and received by the reception antenna when the bill is between the transmission antenna and the reception antenna. The RF signal has a preset, specific frequency.



METHOD OF DETECTING CONVERSION QUALITY OF GREEN MATRIX COMPOSITE MATERIAL AND SYSTEM FOR SAME

Thu, 25 Aug 2016 08:00:00 EDT

A method of detecting conversion quality includes the steps of providing an article having a green material and a semiconductor material, processing the green material and the semiconductor material to produce a matrix composite, and detecting a matrix composite conversion quality with the semiconductor material.



MEDICAL DEVICE POSITION LOCATION SYSTEMS, DEVICES AND METHODS

Thu, 25 Aug 2016 08:00:00 EDT

Methods, devices and systems for three-dimensional location of the disposition of a sensor coil in a subject including are disclosed. The systems include an array of three or more triplet or quadruplet drive coil sets, at least one moveable sensor coil configured to be disposed in a subject and to provide one or more sensor coil response signals responsive to the respective electromagnetic wave fields, a receiving component configured to control drive signals to the array of drive coil sets and to measure sensor coil response signals from the moveable sensor coil, and a processor is configured to determine a sensor coil disposition in the subject relative to said triplet or quadruplet drive coil sets. The receiving component provides a modified drive signal to maximize or optimize the generated respective electromagnetic wave fields, or the one or more sensor coil response signals.



NUCLEAR MAGNETIC RESONANCE (NMR) DISTRIBUTIONS AND PORE INFORMATION

Thu, 25 Aug 2016 08:00:00 EDT

For a given medium, a property may be inferred based on nuclear magnetic resonance (NMR) data. NMR data that includes two or more different NMR signals are used. Differences between any particular two of the two or more different NMR decays are computed and a distribution is produced based on the computed differences. The property of the medium may be inferred using the produced distribution. The produced distribution features the change in a parameter. The NMR distributions may be T2 distributions, T1 distributions, diffusion, or any other type of NMR data. The NMR data may be acquired: at different times, for different levels of invasion, before and after water flooding, or for different saturation states. The inferred property may pertain to the oil and gas industry, material analysis, medicine, pharmaceuticals, the process industry, or the food industry. For example, the inferred property may be the porosity of a subsurface formation.



TOOL CASING DETECTION

Thu, 25 Aug 2016 08:00:00 EDT

Various embodiments include apparatus and methods to conduct testing related to the disposition of measuring tools downhole in a borehole, where the measuring tools are deployed to perform testing to evaluate properties of regions in the borehole. A plurality of test analyses on data collected from operating a measuring device of a measuring tool in the borehole can be used to determine whether the measuring device is in casing or out of casing. Additional apparatus, systems, and methods are disclosed.



System and Method of Measuring Defects in Ferromagnetic Materials

Thu, 25 Aug 2016 08:00:00 EDT

Defects in ferromagnetic materials are detected and characterized by analyzing the items' magnetic fields to find portions of the magnetic fields that differ in characteristic ways from residual magnetic fields generated by non-defective portions of the items. The portions of the magnetic fields that differ in the characteristic ways correspond to locations of the defects. The residual magnetic fields correspond to portions of the items distant from the defects. The defect characterization may include volume of material lost due to each defect and/or width and/or depth of each defect.