Abstract: A system for monitoring polarization and conduction of a thyristor includes a transformer configured to generate a secondary current from a triggering current waveform applied to a gate of the thyristor; a converter configured to convert the secondary current into a monitored voltage; a first hysteresis comparator configured to generate a first voltage pulse based on the monitored voltage when the triggering current waveform includes a first current pulse; a second hysteresis comparator configured to generate one or more second voltage pulses based on the monitored voltage when the triggering current waveform includes one or more second current pulses; a monitoring unit configured to receive the first and the one or more second voltage pulses, and determine whether the triggering current waveform satisfies pre-defined characteristics, and to determine whether a current flowing between the anode and cathode of the thyristor satisfies additional pre-defined characteristics.

Abstract: A current transformer according to the present invention may comprise a magnetic core, a secondary coil, and a magnetic flux compensation member. A main circuit of an air circuit breaker penetrates the magnetic core. In addition, the secondary coil is arranged to be adjacent to the magnetic core, and a secondary current is induced through a current flowing in the main circuit. In addition, the secondary coil supplies the induced secondary current to a relay. The magnetic flux compensation member may be coupled to the magnetic core so as to correct magnetic flux of the secondary coil.

Abstract: A degradation determination device for a secondary battery is used for a hybrid vehicle, and configured to determine degradation of the secondary battery. The hybrid vehicle includes an engine configured to output power, a motor configured to output power, the secondary battery configured to supply electric power to the motor, and a control device configured to execute travel control in which the engine and the motor are controlled. The degradation determination device includes a controller. The controller is configured to determine degradation of the secondary battery based on data of a third parameter in a predetermined period. The third parameter is the difference between a first parameter based on the accelerator operation amount and a second parameter based on a fuel injection amount.

Abstract: The invention relates to a firearm analysis device for determining parameters which are indicative for a firearm from a shot which has been discharged from the weapon, as well as a corresponding method, a corresponding firearm and a computer program product. The device comprises a voltage generating unit which generates an alternating voltage (Ue) during a counter-recoil travel and/or recoil travel of a movable weapon part occurring during a firing. The device is characterized by a signal processing unit which generates a measurement signal (IN+) from the generated AC voltage (Ue), a signal evaluation unit which determines a first time point and a second time point during the counter-recoil travel and/or recoil travel of the movable weapon part, and a time determination unit which determines a time period duration between the first time point and the second time point.

Abstract: An apparatus and a method for measuring a microwave electric field at continuous frequencies based on an alternating current (AC) Stark effect of Rydberg atoms. A cesium vapor cell is used as an atomic sample cell. A cesium atom is excited to a Rydberg state by using detection light and coupling light that are emitted by two laser light sources, an electromagnetically induced transparency spectrum is generated. Further, a strong electric field is used as a local field EL, to cause AC Stark frequency shift and splitting of a Rydberg energy level. ES of to-be-detected signal electric field is applied. In this case, the Rydberg atom serves as a frequency converter, to directly read a beat frequency signal ?f of the local field and the signal field. From the beat signal, the strength of Es of signal filed can be directly read out.

Abstract: Disclosed is a photoionization gas sensor including an ultraviolet generating module having a first substrate, a second substrate, and a third substrate sequentially coupled in a vertical direction, and configured to generate ultraviolet by applying an electric field to a noble gas filling a first cavity, the first cavity formed in a central portion of the second substrate, and a measuring module configured to collect an electrical signal, the electrical signal being generated such that an electric field is applied to a passage, through which gas ionized by ultraviolet passes, so as to allow the ionized gas to come into contact with an electrode, thereby having a small volume and being operated at a low voltage.

Abstract: A steering-wheel grip sensor includes: a driven electrode having a planar shape and extending along a rim of a steering wheel; a sensor electrode having a planar shape and opposed to the driven electrode; a sine-wave generator that supplies a sinusoidal voltage to the driven electrode; a charge amplifier that includes a feedback capacitive element, detects a change in an amount of charge generated according to capacitance of the sensor electrode, and outputs the change in the amount of charge as a change in a voltage; a multiplication processor that multiplies the sinusoidal voltage by an output voltage from the charge amplifier; an integrator that smooths, by integration, a result of multiplication by the multiplication processor; and a grip determiner that determines whether the steering wheel is gripped, according to a level of the result smoothed.

Abstract: A device and method for detecting wire breakage are provided. The wire breakage detection device includes an excitation coil, a detection coil, and a processor. The detection signal input end of the processor is connected to the detection coil. The excitation coil and the detection coil are located on two sides of a longitudinal section of an inner wall of a to-be-detected pipeline respectively, wherein a conductive closed structure is formed continuously and annularly in the to-be-detected pipeline, the axis of the excitation coil is parallel to the axis of the to-be-detected pipeline, and the axis of the detection coil is perpendicular to the axis of the to-be-detected pipeline. The excitation coil is configured to generate an alternating magnetic field according to an alternating electromagnetic signal, wherein an induced current and an electromagnetic field of the induced current are generated by the to-be-detected pipeline located in the alternating magnetic field.

Abstract: A holding brake monitoring circuit system, an elevator system, and a holding brake monitoring method. The holding brake monitoring circuit system includes a plurality of opening sensors corresponding to holding brakes, wherein the number of the opening sensors is an even number greater than 3, and the opening sensors are configured to be paired to form at least two working groups, and each of the working groups is configured to output an output signal for judging status of the holding brake(s).

Abstract: A measurement device for measuring MR signals in a MR device may include first and second magnetometers and a controller. The first magnetometer may be a quantum spin magnetometer that includes a sensor material having a spin defect center including Zeeman splitting states dependent on an external magnetic field of the MR device, an optical excitation source and a microwave excitation source for electromagnetically exciting the sensor material, and a measurement sensor for measuring optical signals emitted by the excited sensor material element and depending on the Zeeman splitting states. The controller may be configured to determine a working frequency of the microwave excitation source of the first magnetometer from the total magnetic field strength measured by the second magnetometer, and control the microwave excitation source to use the determined working frequency as microwave frequency, such that the first magnetometer measures the MR signals as the optical signal.

Abstract: A method for electric field measurement based on a levitated particle includes steps of (1) capturing a particle and levitating the captured particle; (2) adjusting a quantity of electric charge carried by the levitated particle; (3) measuring a charge number N of the levitated particle; (4) disposing the levitated particle in an electric field to be measured, measuring a displacement power spectral density Svxel of the levitated particle under the electric field and obtaining an electric field force Fel; and (5) according to a formula of E=Fel/Nqe, obtaining an electric field intensity E. An apparatus for electric field measurement based on a levitated particle includes a high-voltage DC (direct current) power supply, two bare wire electrodes, a vacuum chamber, a trapping laser, an objective lens, a pair of parallel electrodes, a collective lens, a quadrant photodetector, a lock-in amplifier, a signal generator and a power amplifier.

Abstract: A deterioration prediction device for a magnetic material is provided with: a magnetic sensor configured to detect a magnetic field affected by a magnetic body (W) as an inspection target and outputs a sensor signal; a deterioration score calculation means (51) configured to calculate a deterioration score indicating the degree of deterioration of the magnetic body based on the sensor signal; a deterioration score storage unit (41) configured to store the deterioration score; a deterioration prediction model storage unit configured to store a deterioration prediction model indicating a change in the degree of deterioration; a deterioration prediction model update means (52) configured to update the deterioration prediction model to acquire an updated deterioration prediction model; and a deterioration score prediction means (53) configured to estimate a future deterioration score.

Abstract: This wire rope inspection system (100) is provided with a control unit (21) for performing control to inspect a status of a wire rope (101) based on first measurement data (201a) and second measurement data (201b) that differ in the measurement date and time. The control unit is configured to align a waveform of first measurement data and a waveform of second measurement data such that an inspection operation start point of the elevator of the first measurement data and an inspection operation start point of the elevator of the second measurement data coincide with each other.

Abstract: In a described example, a structure includes a substrate having a surface with multiple sides. A sensor is positioned within the substrate and a seed layer is over at least four sides of the surface of the substrate. A magnetic shield layer is over the seed layer for the at least four sides of the surface of the substrate.

Abstract: A sensor is provided for detecting small concentrations of volatile organic compounds in ambient air. The sensor has a lamp assembly and a gas sampling chamber assembly which are operatively associated. The gas sampling chamber assembly has an ionization chamber and an electrode assembly. The electrode assembly has sensing, counter and auxiliary electrodes and circuitry. The electrodes are positioned within the ionization chamber and are separated from one another. The circuitry is configured to apply a voltage difference to the sensing and counter electrodes, control an electrical potential of the auxiliary electrode to be substantially equal to an electrical potential of the counter electrode, measure/estimate a current at the sensing electrode and at the auxiliary electrode, determine a difference between the current at the sensing electrode and the current at the auxiliary electrode, and correct the current at the sensing electrode by using the difference.

Abstract: The present invention relates to a detection system comprising detection means (140) of the inductive field type and detection means (10) using microwave field-based imaging, analysis means (50) which are suitable for analysing the signals from the inductive detection means (140) and for deducing therefrom the potential presence of the metal targets, and means which are suitable for correspondingly modifying, at least in a zone of interest, the sensitivity of the detection means (10) using microwave-based imaging.

Abstract: A vehicle seat comprises a seat component having a contour; wherein the contour changes when at least a portion of a user's body is in contact with the seat component and at least one multibend sensor operatively connected to the seat component and adapted to at least partially conform to the contour of the seat component; the at least one multibend sensor comprising a signal generation source adapted to transmit signals and a signal receiver adapted to receive at least some of the transmitted signals. The seat further comprises a signal processor operatively connected to the signal receiver, the signal processor adapted to make at least one measurement associated with the received signals; and, a sensing module operatively connected to the signal processor and configured to use the at least one measurement to determine information regarding the contour of the seat component.

Abstract: A metal detection apparatus that can accurately and automatically determine whether a metal passing through the inspection area is a magnetic or non-magnetic metal comprises a detection unit quadrature-detecting a differential detection signal of magnetic field fluctuation in the inspection area due to the passage of a workpiece, and a determination unit that determines the presence or absence of a mixed metal based on both fluctuation components after the detection. The determination unit compares sample signal phase data obtained beforehand from the detection signal of the magnetic field fluctuation in the inspection area due to the passage of various metal samples, with the signal phase data obtained from the detection signal of the magnetic field fluctuation in the inspection area due to the passage of the workpiece mixed with metal, and determines the type of metal passing through the inspection area based on the phase determination result.

Abstract: A current sensor is configured to detect a current flowing through an electrical conductor. The current sensor includes a core and a coil wound around the core. The core has a hollow therein configured to allow the electrical conductor to pass through the hollow. The core substantially has a C-shape having a gap connected to the hollow. The core has a pair of end surfaces facing each other in a facing direction across the gap. The core includes plural split cores joined to one another. Each pair of split cores of the plural split cores adjacent to each other have respective joining surfaces joined to each other. The respective joining surfaces of the each pair of split cores being parallel to the facing direction. This current sensor has a desired sensitivity characteristic.

Abstract: A method of estimating a nitrogen site carbon concentration, in a first epitaxial layer made of carbon-doped gallium nitride of an electronic component, including steps of: estimating an electric capacitance of a stack interposed between the first layer and a first electrode of the component; heating the component; measuring an offset of a threshold voltage of the component; and deducing therefrom a nitrogen site carbon surface concentration in the first layer.