Abstract: According to one embodiment, a sensor includes a base body, a first fixed portion, a movable portion, and first and second fixed electrodes. The first fixed portion is fixed to the base body. The movable portion is supported by the first fixed portion. The movable portion includes annular portions and connecting portions. The annular portions are concentric with the first fixed portion as a center in a first plane. One of the connecting portions connects one of the annular portions and an other one of the annular portions. The annular portions include first to third annular portions. The second annular portion includes a first movable portion electrode. The first fixed electrode is fixed to the base body and faces a part of the first annular portion. The second fixed electrode is fixed to the base body and faces the first movable portion electrode.

Abstract: A method for inspecting LED dies includes the following steps. First electrodes and second electrodes of LED dies to be inspected are short-circuited via a conductive layer on an inspection substrate, or an inspection bias voltage is applied between the first electrodes and the second electrodes of the LED dies. An excitation light is irradiated on the LED dies to be inspected on the inspection substrate such that the LED dies to be inspected emit a secondary light. When the first electrodes and the second electrodes of the LED dies to be inspected are open, short-circuited, and/or subjected to the inspection bias voltage, the secondary light is captured via an optical sensor. An output of the optical sensor is received via a computer and a spectrum difference of the secondary light is calculated to determine whether the LED dies are abnormal or to classify the LED dies to be inspected.

Abstract: A detection device includes: a detector including first electrodes and second electrodes disposed around a the first electrodes; a detection circuit configured to detect proximity of an external object to the detector; a power circuit configured to generate a square wave; and a filter that is coupled to the power circuit through an isolator and configured to receive the square wave transmitted through the isolator. The filter includes a low-pass filter circuit and a digital potentiometer. A periodically oscillating potential based on output from the filter is provided as a reference potential of the power circuit and provided to the second electrodes. A reference potential of the filter is a fixed potential. The power circuit can change the frequency of the generated square wave. The filter can change the frequency of the periodically oscillating potential in accordance with an electric resistance value of the digital potentiometer.

Abstract: A vertical probe card device and a fence-like probe thereof are provided. The fence-like probe has a probe length within a range from 5 mm to 8 mm. The fence-like probe includes a fence-like segment, a connection segment, and a testing segment. The fence-like segment has an elongated shape defining a longitudinal direction, and the fence-like segment has a penetrating slot and a first protrusion. The penetrating slot is formed along the longitudinal direction and has a length greater than 65% of the probe length. The first protrusion extends from one of two long walls of the penetrating slot by a first predetermined width and is spaced apart from another one of the two long walls of the penetrating slot by a first gap. The connection segment and the testing segment are respectively connected to two end portions of the fence-like segment.

Abstract: A non-destructive measurement method and apparatus for the turn-to-turn resistivity distribution (TTRD) in non-insulation (NI) superconducting coils. The method includes: during the discharging or charging process, obtaining experimental values of voltage varying over preset time at different positions of the test coil; dividing the test coil into a plurality of measurement units and obtaining basic circuit elements; then constructing a preset equivalent circuit model including the basic circuit elements; based on the constructed equivalent circuit model, obtaining the first simulated values of voltage varying over preset time at different positions of the test coil; finally, determining the TTRD of the test coil based on the fitness value between experimental values and the first simulated values. When there is high fitness value between the first simulated values and experimental values, the TTRD corresponding to the first simulated values is considered as the TTRD within the test coil.

Abstract: An object of the present invention is to provide a semiconductor device capable of diagnosing disconnection of a signal line that transmits a command signal in an inspection process even if the command signal is assumed not to be transmitted in the inspection process. A semiconductor device according to the present invention includes a first semiconductor integrated circuit and a control circuit, the control circuit includes a means for controlling a signal line in response to a response signal from the first semiconductor integrated circuit, and the control circuit further includes a means for controlling the signal line regardless of a signal from the first semiconductor integrated circuit.

Abstract: The inertial sensor device is an inertial sensor device including a plurality of inertial measurement modules, and includes: a clocking unit; a storage unit configured to store detection data from each of the plurality of inertial measurement modules in association with a time point of the clocking unit; and a synthesis processing unit configured to calculate interpolation data at a predetermined time point based on the detection data from each of the plurality of inertial measurement modules at at least two time points, and synthesize, using the interpolation data for each of the plurality of inertial measurement modules, output data at the predetermined time point.

Abstract: To facilitate a change in the number and layout of magnetic field detection devices to be arranged in an array. A magnetic field detection device includes a cancel coil wound around a bobbin, a cover member fixed to the bobbin and covering the cancel coil in a direction perpendicular to the axial direction of the cancel coil, and magnetic sensors fixed to the bobbin or cover member. The cover member has side surfaces and extending in the z-direction and positioned on mutually opposite sides. The side surfaces have first and second engagement portions, respectively, and the first engagement portion has a shape engageable with the shape of the second engagement portion. This makes it possible to arrange a desired number of the magnetic field detection devices.

Abstract: An electric field sensor may include an atomic vapor cell and a plurality of lasers configured to excite atoms in the vapor cell from a low-energy state to a high-energy state. The sensor may be configured to split signals from the plurality of lasers into multiple polarized signals. The polarized signals may be transmitted through the atomic vapor cell. A subset of the polarized signals may be received by photodetectors after the subset exits the vapor cell. Based on signals from the photodetectors, the electric field sensor may determine an angle of arrival and polarization information about an electric field that is incident upon the atomic vapor cell.

Abstract: A system, in one embodiment, may include a system includes a ground fault detection system. The ground fault detection system includes a linear filter configured to receive one or more signals from a static starter system during operations of the static starter system and to produce a linear filter output. The ground fault detection system further includes a rectifier configured to rectify the linear filter output and to produce a rectifier output, and a gain system configured to multiply the rectifier output by a factor to produce a gain output. The ground fault detection system additionally includes a fault indicator system configured to indicate a ground fault based on the gain output, wherein the ground fault detection system is configured to command an action based on the ground fault.

Abstract: A photonic Rydberg atom radio frequency receiver includes: an integrated photonic chip; an atomic vapor cell; and a receiver member including: a photonic emitter; probe light reflectors disposed on the atomic vapor cell; and coupling light reflectors disposed on the atomic vapor cell such that the pair of coupling light reflectors is optically opposed across the interior vapor space and receives and reflects the coupling laser light so that the coupling laser light is reflected between the coupling light reflectors multiple times in the interior vapor space of the atomic vapor cell.

Abstract: A coil assembly for use as a transmission and/or receiving coil in an MR system comprises a dipole antenna assembly with multiple dipole antennas. Connection elements are converted from an electrically conductive state to an electrically non-conductive state. In the electrically conductive state, the dipole antennas form a cylindrical volume coil and/or a conductor loop assembly, in particular a flat conductor loop assembly. The connection elements comprise blocking circuits which automatically block when a high-frequency alternating voltage with a frequency corresponding to the blocking frequency of the connection element blocking circuits is applied to the coil assembly.

Abstract: In an embodiment, an inductive proximity sensor includes two receiving coils and one transmitting coil arranged between the two receiving coils. The receiving coils and transmitting coil are each formed from a group of at least two individual coils on carrier boards, which are arranged parallel to one another. The carrier boards have a diameter which is smaller than or equal to 10 mm, and a winding of the receiving coils or the transmitting coil has a cross-sectional geometry in which a ratio of a base width to a height lies in the range from 0.2 to 0.3. An embodiment of a method for detecting an object using an inductive proximity sensor includes generating an alternating field using a transmitting coil of the proximity sensor and sensing, using two receiving coils of the inductive proximity sensor, a change in the alternating field caused by proximity of the object.

Abstract: In a general aspect, vapor cell sensors are used to perform OTA testing of cellular base stations. In some implementations, a system for performing OTA testing of a cellular base station includes a vapor cell sensor including a vapor having Rydberg states and a control system communicably coupled to the vapor cell sensor and configured to tune the vapor cell sensor to a carrier frequency of RF radiation emitted from the cellular base station; receive a first set of optical signals generated based on an interaction between the vapor and a synchronization signal; tune the vapor cell sensor to a harmonic of the carrier frequency; receive a second set of optical signals generated by the vapor cell based on an interaction between the vapor and the RF radiation; convert the first and second sets of optical signals to digital data; and process the digital data to detect a condition of the cellular base station.

Abstract: Magnetic positioning systems and methods for use in a robotic surgical system are provided. A multi-axis magnetic field source generates a magnetic field by simultaneously exciting a plurality of axes of the multi-axis magnetic field source with respective source signals that are orthogonal to each other over a period, T. A multi-axis magnetic field sensor detects the generated magnetic field. The detected magnetic field is analysed over an analysis interval which is at least as long as the period, T, to resolve the detected magnetic field into components which are due to the plurality of source signals. The components are used to determine one or both of the position and the orientation of the multi-axis magnetic field sensor relative to the multi-axis magnetic field source.

Abstract: In a general aspect, vapor cell sensors are used to perform over-the-air (OTA) testing of cellular base stations. In some implementations, a vapor cell sensor including a vapor having Rydberg states is tuned to a carrier frequency of RF radiation emitted from a cellular base station. A first set of optical signals is generated based on an interaction between the vapor and a synchronization signal transmitted from the cellular base station. The vapor cell sensor is tuned to a harmonic of the carrier frequency. A second set of optical signals is generated based on an interaction between the vapor and the RF radiation. The first and second sets of optical signals are converted to digital data. The digital data is processed to detect a condition of the cellular base station.

Abstract: Provided is a heater substrate that includes an insulating substrate having a first surface and a second surface that is on an opposite side from the first surface, a heater wire located inside the insulating substrate, and an adjustment part that is electrically connected to the heater wire. The adjustment part includes a pair of adjustment terminals that are located on the second surface and are respectively electrically connected to two ends of a partial section of the heater wire, and an adjustment conductor that is located on the second surface and is connected to the pair of adjustment terminals. Also provided are a probe card substrate and a probe card that include the heater substrate.

Abstract: A capacitance probe for determining the water cut or the amount of water in fluids. The probe includes at least a pair of electrodes. Each electrode includes a thin, pliable and conductive winding. The windings have a thin insulation layer or coating. The first electrode and the second electrode are configured to form a capacitance sensor that generates a signal related to the dielectric permittivity of a fluid flowing between the first electrode and the second electrode.

Abstract: The present disclosure provides a system and method for measuring resonance frequencies of a quantum sensor based on multi-photon excitation. The system includes a probe laser module, a coupling laser module, a quantum sensor, a fast measurement module, an experimental signal source, and a measurement and calculation module. The experimental signal source directly faces the quantum sensor, and is configured to transmit a RF electromagnetic signal to the quantum sensor. The quantum sensor includes a closed glass cavity. An alkali metal atomic vapor is enclosed in the glass cavity. The probe laser module is connected to one side of the quantum sensor, and the coupling laser module is connected to the other side of the quantum sensor through the fast measurement module.

Abstract: A voltage detection device is provided. The voltage detection device includes a first voltage divider circuit, a comparison circuit, and a second voltage divider circuit. The first voltage divider circuit is configured to receive an input voltage and output a comparison voltage according to the input voltage. The comparison circuit is configured to receive the comparison voltage to compare the comparison voltage with a reference voltage and determine whether to change a trigger signal according to a comparison result. The second voltage divider circuit is configured to receive the input voltage. When the input voltage is greater than or equal to a predetermined voltage value, the second voltage divider circuit and the first voltage dividing circuit form a parallel structure to pull down the comparison voltage.