Abstract: A device inspection apparatus comprises: a plurality of probe heads; an inspection circuitry to measure inspection value data for each semiconductor device; a storage circuitry to store inspection result data including the inspection value data and a determination result on the semiconductor device; and an analysis circuitry to perform, by statistical processing based on a plurality of the inspection result data present for each inspection item and stored in the storage circuitry, an analysis to determine if there is a significant difference between a plurality of the inspection result data for each of the probe heads, and determines that a probe head concerned is abnormal if there is a significant difference.

Abstract: A device for a vehicle access control system, includes: a main electrode for carrying out a capacitive-type approach detection; and a transmitting and receiving antenna which is formed by a coil and is configured to transmit and receive a radiofrequency signal in order to identify a user. One turn of the coil includes: a first portion which delimits a region inside of which the main electrode is located; a second portion is offset relative to the main electrode, and at least one notch extends along one edge of the main electrode and connects the first portion and the second portion together. Each notch including two sections which are parallel to one another and connected together by a portion of the turn located at the bottom of the notch. It is thus possible to obtain a large antenna, which at the same time effectively performs a guard ring function for the main electrode.

Abstract: The disclosure relates to estimation of junction temperatures of transistors in a power electronics converter. Example embodiments include a method of estimating a junction temperature of a transistor in a power electronics converter configured to convert between first and second supply voltages, the method comprising: providing a gate switching signal to the transistor; measuring a rate of change of current through the converter during a switching period of the transistor; and outputting an estimated junction temperature of the transistor based on the measured rate of change of current, wherein the rate of change of current is measured while a gate voltage of the transistor is above a gate threshold voltage and a drain-source voltage across the transistor is above a predetermined fraction of the first or second supply voltage whereby the rate of change of current is measured in a linear region.

Abstract: The present disclosure relates to a modular positioner and/or fixture, a measurement system and a data processing program product for a device under test (DUT), comprising a first positioning and/or fixing connector, adapted for being detachably mounted to a DUT, a second positioning and/or fixing connector for mounting to a test arrangement, the first positioning and/or fixing connector and second positioning and/or fixing connector being adapted to automatically interact with each other to provide a positioning and/or fixing of a DUT by automatically effecting a positive form-fit interaction and/or for non-positive force-fit interaction, further comprising elongated guiding elements, adapted for guiding the first positioning and/or fixing connector into a fixing position with respect to the second positioning and/or fixing connector.

Abstract: A device (10) for monitoring the operation of a plurality of electrical cables, connection or coupling accessories, switchgear and transformers, included in a meshed electrical network, has a plurality of end branches (16) and a plurality of intermediate branches (14) comprises the meshed electrical network, at least two inductive sensors (12) suitable for detecting a partial discharge occurring in the meshed electrical network and a means (18) for locating the source of the partial discharge (PD).

Abstract: Systems and methods for sampling signals are disclosed. In an example, a system includes a capacitive sampling array having an input interface, an output interface, and capacitive sampling channels connected in parallel between the input interface and the output interface, wherein each capacitive sampling channel has a channel-specific capacitor having a channel-specific capacitance, a readout system coupled to the output interface of the capacitive sampling array and configured to generate digital data in response to a signal received on the input interface of the capacitive sampling array, and a controller coupled to the readout system to receive the digital data and configured to select capacitive sampling channels of the capacitive sampling array to sample the signal in response to the digital data.

Abstract: Wireless circuitry is provided that includes a transformer having a primary coil and a secondary coil, a first group of switchable capacitors coupled to a first terminal of the primary coil, a second group of switchable capacitors coupled to a second terminal of the primary coil, and capacitance measurement circuitry selectively coupled to a center tap of the primary coil during a measurement mode. The capacitance measurement circuitry can include a current source, a current sink, a comparator, a voltage generator for providing one or more threshold/reference voltages to the comparator, a frequency measurement circuit, and a capacitance calculation circuit configured to compute a capacitance of the first and second groups of switchable capacitors.

Abstract: A method is provided for measuring the impedance of a pH sensor electrode. The method includes applying a positive voltage pulse to the pH electrode and taking a plurality of samples of the sensor voltage response and, from those samples, estimating the impedance of the sensor electrode. Then, a negative voltage pulse width is dynamically adjusted to cancel out the induced charges from the positive voltage on the pH sensor so that the sensor quickly recovers to read subsequent media pH levels.

Abstract: Method for electronically indicating a concentration of an irrigation solution in a root canal (RC) of a tooth (T), using a device able to be electrically connected to an endodontic instrument engaged in the canal and to a labial electrode, and including a screen to display the progression of the instrument in said canal relatively to a critical apical point of reference such as the cemento-dentinal junction (CDJ), said device being furthermore able to measure, in the vicinity of said point of reference, by conductimetry, a concentration of an electrolyte irrigation solution injected into the root canal.

Abstract: An apparatus for measuring a magnetic field strength is provided. The apparatus includes a stage on which a sample to be measured is placed, a cantilever having a tip, an optical system having a light source and a light receiver, and a microwave power source. The tip is a diamond tip having a nitrogen vacancy defect. The optical system is configured such that excitation light from the light source is focused at the diamond tip. The cantilever is configured as a coaxial microwave antenna through which microwaves from the microwave power source are supplied to the diamond tip.

Abstract: Systems and methods herein are for an automatic board probing station in which a plurality of probe tips are associated with a plurality of probe arms and with a plurality of motorized connectors, where the plurality of motorized connectors is to cause individual ones of the plurality of probe tips and individual ones of the plurality of probe arms to be movable independently, and where the plurality of probe tips is to communicate probe signals with a circuit analysis system and is to concurrently probe a plurality of probe points of a circuit board.

Abstract: An electric potential measurement system for detecting contaminants in the subsoil, comprising: a reference electrode (2); a vehicle (3); a measurement electrode (4), with: a contact electrode (7) formed by an electrically insulating container (13) including a metal electrode (14) surrounded by a non-metal filler material (15), and a retaining mesh (16) covering the base of the container (13); a non-metal contact appendage (9) establishing continuous galvanic contact with the soil as the vehicle (3) moves over the ground (6); a data acquisition and positioning system (5) which acquires and stores position data (Pi) and electric potential difference measurements (?vi) between the reference electrode (2) and the measurement electrode (4) in a memory (29). The data stored in the memory can be used to obtain an electric potential map (30) and/or a map (32) with the probability of the presence of contaminants.

Abstract: The present disclosure relates to a system (100) for detection and identification of at least one species in a sample in an ionic exchange membrane (110), comprising an ion exchange membrane (110), an impedance analyser (120), source (141) and target electrodes (142), a voltage and/or current source (140) arranged to provide an electric potential difference, a computer (170), and at least two impedance electrodes (121, 122) arranged at the ion exchange membrane (110) and connected to the impedance analyser (120). The source (141) and target electrodes (142) are connected to said source (140), and are arranged to upon addition of source (151) and target electrolyte (152) be in ionic contact with a first (111) and second region (112) of the ion exchange membrane (110) respectively.

Abstract: In an approach to inspecting integrated circuits, a system includes a first detection system and a second detection system for measuring electroluminescent (EL) images from a device under test (DUT); and a controller. The controller is configured to: measure EL emissions from the DUT with the first and the second detection systems to obtain a first and a second EL test data; compare the first and the second EL test data to a reference model of a reference device, the reference model developed based on measured EL reference data, synthetic EL reference data, or a combination thereof obtained from the reference device or a reference design of the reference device; and determine whether the DUT is in accordance with the reference device, based at least in part on the comparison of the first and the second EL test data to the reference model of the reference device.

Abstract: A capacitive sensor for a planar recognition of an approach of an object. The capacitive sensor includes a first planar electrode and a second planar electrode, a dielectric being situated between the first electrode and second electrode for spacing. The first electrode and the second electrode being designed to be limp and/or torsion flexible.

Abstract: A capacitive rotary angle measuring system for detecting a rotary movement of a shaft includes a sensor unit, a carrier signal generator, an evaluation unit, and a carrier signal adaptation unit. The sensor unit includes a transmitting electrode arrangement and a receiving electrode arrangement which are capacitively coupled together, and a coupling device which co-rotates with the shaft and which varies an electric capacity between the receiving and the transmitting electrode arrangement based on a rotational position of the coupling device. The carrier signal generator is electrically connected to the transmitting electrode arrangement and generates an electrical carrier signal. The evaluation unit is electrically connected to the receiving electrode arrangement and senses an electric measurement signal generated at the receiving electrode arrangement and determines a current rotary angle measurement value.

Abstract: A method for operating a group of pressure sensors is provided. First and second pressure sensors respectively have first and second pressure measurement ranges, and are arranged to measure the pressure in a common measurement volume, and have measurement ranges that overlap in a range. The method comprises: aa) reading out first and second measurement signals respectively from the first and second pressure sensors substantially simultaneously while the pressure in the common measurement volume is in the overlapping range; bb) stipulating the first measurement signal which has been read out as the adjustment point for the second pressure sensor; cc) determining at least one calibration parameter, in particular a gas-dependent calibration parameter, for the second pressure sensor as a function of the first measurement signal, as a function of the adjustment point for the second pressure sensor, as stipulated in bb), and as a function of the second measurement signal.

Abstract: A measurement method (100) of the electric permittivity (?) at 0 Hz of a substance (1), irrespective of the aggregation state, comprising the steps of: pre-arranging (101) a rheometer (2) comprising an electrorheology module (20), provided with a fixed first plate (21) and said movable second plate (22); connecting (102) a voltage generator (3) to said rheometer (2); placing (103) the substance (1) between said first plate (21) and said second plate (22); arranging (104) said second plate (22) at a distance (D) from said first plate (21); imposing (105) said potential difference (?V) at 0 Hz between said first plate (21) and said second plate (22); measuring (106) a normal force (F) to which said second plate (22) is subjected; converting (108) the normal force (F) to obtain the dielectric permittivity (?) of the substance (1).

Abstract: Disclosed is a test board which includes a substrate that includes a device under test (DUT) placement area where a first DUT and a second DUT are disposed, a first load switch connected in series with the first DUT and configured to be set to a switch on state or a switch off state based on a first enable signal, a second load switch connected in series with the second DUT and configured to be set to the switch on state or the switch off state depending on a second enable signal, and a test controller. The test controller may be configured to perform a test operation in a (1-1)-th mode by activating the first enable signal and deactivating the second enable signal and then perform the test operation in a (1-2)-th mode by deactivating the first enable signal and activating the second enable signal.

Abstract: A steering device includes a measurement circuit which measures electrostatic capacitance of an electrode provided to a steering wheel, and a grip determination device which determines presence/absence of gripping of the steering wheel based on a measurement value Ch_d from the measurement circuit. The grip determination device includes a capacitance threshold setter which sets a reference value Ch_0 for the electrostatic capacitance of the electrode, and a determiner which determines presence/absence of gripping of the steering wheel based on a difference between the measurement value Ch_d and reference value Ch_0. The capacitance threshold setter changes the reference value Ch_0(n) according to a change amount dCh_0(n) in the measurement value when the absolute value |a(n)| for the slope of the filter value Ch_d_f(n) of the measurement value was less than a predetermined slope threshold a_th.