Abstract: A rotation angle detector includes a magnet arranged to rotate, and a magnetic detection circuit provided with a first pair of magnetic detection elements arranged to be in combination sensitive to a first magnetic field in circumferential direction to the first surface and to a second magnetic field in normal direction to the first surface and arranged away from the rotation axis, and configured to detect magnetic flux of the magnet. A second pair of magnetic detection elements are arranged to be in combination sensitive to the first magnetic field in circumferential direction to the first surface and to the second magnetic field in normal direction to the first surface. A signal processing unit is configured to output a signal representative of a rotation angle of the magnet based on outputs of the first and second pair of magnetic detection elements.

Abstract: A contact detection circuit is applied to a four-terminal measurement device. The contact detection circuit comprises a first isolator, a signal generator, a multiplier and a calculator. The first isolator comprises a primary side and a secondary side, with the secondary side comprising a first terminal and a second terminal, with the first terminal configured to be electrically connected to a driving terminal and the second terminal configured to be electrically connected to a measuring terminal. The signal generator is configured to provide a measuring signal. The multiplier is configured to generate an output signal based on the measuring signal and a first reflected signal when the first reflected signal is induced at the primary side of the first isolator based on the measuring signal. The calculator calculates contact resistance between the driving terminal and the measuring terminal based on a direct-current component of the output signal.

Abstract: A magnetic position sensor having a substrate with an elongated, substantially continuous magneto-resistive section formed on the substrate. At least three electrodes are in contact with, and space at intervals along, the magneto-resistive section, thereby dividing the magneto-resistive section into at least first and second magneto-resistive regions. A magnet is configured to move in an direction which increases or decreases the magnetic field over the magneto-resistive layer, while a detection circuit configured to detect a change in voltage between the electrodes as the magnet moves from predominantly over the first magneto-resistive region to predominantly over the second magneto-resistive region.

Abstract: A torque and angular sensor includes a differential angle sensor to precisely measure a differential angle between an input shaft and an output shaft and an angular position sensor to measure the angle of at least one of the shafts over a full angular range. The differential angle sensor measures an output rotation angle of an output target and an input rotation angle of an input target using changing voltages in taps on the input and output coils, which each carry an AC excitation current and which are each inductively coupled with teeth on targets fixed to rotate with one of the shafts. Input shaft rotation angle region is combined with the input angular position as a rotation angle composite. A raw torque angle is determined based on the difference between the input and output rotation angles. Rotational and Linear compensation provides a high-precision torque angle.

Abstract: Systems and methods are provided for detecting alignment anomaly. A sensor enclosure can be translated along a fixture to a final alignment location on the fixture. A signal transmitted by a signal transmitter can be received by a signal receiver. The signal transmitter can be integrated into the sensor enclosure. The signal receiver can determine a signal intensity based on the received signal. The signal intensity can be determined based in part on the final alignment location of the sensor enclosure on the fixture. An enclosure alignment anomaly can be identified based on the signal intensity.

Abstract: A sensor chip comprises a sensing element providing a sensor signal, an on-chip memory, a configuration of a look up table of dimension N stored in the on-chip memory for assigning an output value to a combination of N input values, and a look up table engine for determining a corresponding output value in response to receiving a memory address for the look up table configuration and in response to receiving a sensor value derived from the sensor signal as one of the N input values.

Abstract: A sensor element for a motor vehicle, includes a sensor circuit for detecting a physical variable, a first housing, in which the sensor circuit is arranged, a second housing, in which the first housing is arranged, a thermoplastic, which at least partially encloses the first housing and fixes the first housing in the second housing in a positioning position, at least two positioning recesses for receiving positioning pins being formed in the first housing in order to fix the first housing in the positioning position while the first housing is being enveloped by the thermoplastic.

Abstract: A physical quantity measurement device includes a physical quantity measurement sensor and a metal block that is a holding member that includes block surfaces that serve as a plurality of holding portions for holding the physical quantity measurement sensor, and the block surface has a groove formed in a region facing the physical quantity measurement sensor.

Abstract: A method for checking an operability of two-wire measuring transducers in automation technology which output a measurement signal as an impressed loop direct current via a two-wire line and active assemblies of which are supplied with electrical energy via the two-wire line includes: measuring the loop direct current and an input voltage of the measuring transducer; increasing the loop direct current in a range from a minimum value to a maximum value independently of the measured value, while measuring the input voltage of the measuring transducer; storing the measured values of the input voltage at selected measuring points of the loop direct current as an individual signature of the measuring transducer; and, during ongoing operation, measuring the input voltage at connection terminals of the two-wire line via an internal resistance of the measuring transducer at a prevailing loop direct current and recursively comparing that with the signature.

Abstract: A suction module for a hand-held power tool includes a motor-driven fan wheel, an intake channel for sucking in dust-laden air, and a collecting container for dust. A flow sensor has a sensor surface, which is formed of plastic and is arranged in the intake channel, an electric field meter facing the sensor surface for determining the electrostatic field strength on the sensor surface, and an evaluating unit for determining a flow rate of dust-laden air on the basis of the determined electrostatic field strength.

Abstract: An apparatus for measuring flow in a conduit includes a sensor head configured for insertion transversely through a conduit sidewall to position the sensor head in an electrically conductive fluid flowing through the conduit. The sensor head includes a core and a coil that at least partially surrounds the core, the coil being excitable to generate an electromagnetic field. The sensor head also includes first and second electrodes spaced apart from each other, and a body that supports the coil, core, and electrodes. The body includes at least one channel through which the electrically conductive fluid flows. The electrodes are positioned in the at least one channel. Each channel is defined by opposing sidewalls that have a converging configuration.

Abstract: An ultrasonic flow meter for measuring the flow of a fluid includes a transducer assembly having an adjustable length. The transducer assembly is positioned in a transducer port in the meter body and includes a piezoelectric capsule axially positioned adjacent a first end of the transducer assembly. The piezoelectric capsule includes a transformer, a piezoelectric element axially spaced from the transformer, and axially-extendable wireway. A conductor extends through the extendable wireway and electrically couples the piezoelectric element with the transformer.

Abstract: An ultrasound flow measurement apparatus is provided having a plurality of ultrasonic transducers for determining the flow rate of a fluid flowing in a line, said ultrasound flow measurement apparatus having a plurality of measurement paths at which two respective ones of the ultrasonic transducers are arranged opposite one another with the flow being arranged therebetween and with a mutual axial spacing in the longitudinal direction of the line and having an evaluation unit that is configured to calculate the flow rate from time of flight differences of ultrasonic signals along the respective measurement paths in the direction with the flow and against the flow. The measurement paths have different axial offsets here.

Abstract: A thermal flowmeter includes: a sub-passage (307) that takes a part of a gas (30) to be measured flowing through a main passage; and a flow measurement unit (451) disposed inside the sub-passage (307). The sub-passage (307) includes: a first passage (351) provided on a measurement surface (451a) side of the flow measurement unit (451); a second passage (352) provided on a back surface (451b) side of the flow measurement unit (451); and an inclined passage (361) provided on an upstream side of an inlet (351a) of the first passage in a forward flow direction F of the gas (30) to be measured in the first passage (351).

Abstract: A method for determining density and/or mass flow of a compressible medium with a measuring transducer of vibration-type having at least two oscillators, each including a pair of measuring tubes, wherein the pairs of measuring tubes are arranged for parallel flow, wherein the two oscillators have mutually independent oscillator oscillations with mutually differing eigenfrequencies for corresponding oscillation modes. The method includes steps of determining the values of the eigenfrequencies of at least two different oscillator oscillations, determining at least two preliminary density measured values based on the values of the eigenfrequencies, and determining a correction term for one of the preliminary density measured values and/or for a preliminary measured value of flow based on the preliminary density measured values and the values of the eigenfrequencies.

Abstract: A vibratory meter (5) including a multi-channel flow tube (130) is provided. The vibratory meter (5) includes a meter electronics (20) and a meter assembly (10) communicatively coupled to the meter electronics (20). The meter assembly (10) includes the multi-channel flow tube (130, 330, 430, 530) comprising two or more fluid channels (132, 332, 432, 532) surrounded by a tube wall (134, 334, 434, 534). The two or more fluid channels (132, 332, 432, 532) and tube wall (134, 334, 434, 534) comprise a single integral structure. A driver (180) is coupled to the multi-channel flow tube (130, 330, 430, 530). The driver (180) is configured to vibrate the multi-channel flow tube (130, 330, 430, 530). The two or more fluid channels (132, 332, 432, 532) and tube wall (134, 334, 434, 534) are configured to deform in the same direction as the single integral structure in response to a drive signal applied to the driver (180).

Abstract: A gas meter with a rated maximum flow capacity of greater than 3,000 CFH (Cubic Feet per Hour)—for example, between 3,500 CFH and 7,000 CFH—is provided with 2-inch flange connectors. One or more undercuts are provided in the meter body to promote satisfactory performance in terms of, for example, differential pressures at the meter inlet and outlet.

Abstract: Embodiments of the invention relate to dosing dispensers and in particular to dosing dispensers that may be operated using one hand by raising and filling a dosing chamber followed by lowering and dispersing a product from the dosing chamber and wherein the dose may be selected or adjusted and a user may visually confirm that the proper dose is being loaded and delivered by the dispenser.

Abstract: An apparatus comprises a detector, a pressure sensor and a processor. The detector is operable to detect light that is scattered by an aerosol that is associated with a pressure. The pressure sensor is operable to measure the pressure. The processor is coupled to the detector and to the pressure sensor, and is configured to receive at least a signal from the detector and the pressure sensor. The processor is further configured to use the received signals to calculate a volume of the first aerosol, and to output an output signal associated with the calculated volume. The various measurements can be repeated and compared, and the output signal can be a feedback signal for metering subsequent amounts of the aerosol, based on the comparison.

Abstract: A water level detector for fuel filters which has a first body and a second body, the first body and the second body being able to be joined together, jointly forming an outer enclosure of the water level detector; and components to detect water in the fuel filters housed by the outer enclosure. The water level detector also includes a plurality of protrusions and housings adapted to transmit relative turning of the first body and the second body together, jointly forming the outer enclosure, and a plurality of tabs and slots adapted to establish axial retention, such that the first body and the second body remain joined together, the first body and the second body jointly forming the outer enclosure.

Abstract: A system and method for determining a liquid level in a vessel is described. Embodiments of the system can include a liquid level measuring assembly, a user device, and a vessel. The liquid level measuring assembly can include an ultrasonic sensor assembly, a control module, and a mount body configured to place the ultrasonic sensor assembly proximate a bottom of a vessel. Typically, the system can be implemented with a vessel having a substantially cylindrical shape and including a chime. The mount body can be adapted to removably couple to the inside of the chime of the vessel.

Abstract: A level meter and a method for monitoring the level meter operating according to the radar principle, in which a signal conductor is lead out of an inner space of a leakage chamber of a bracket housing through a process-side opening of the leakage chamber and/or of the bracket housing into the process-side outer space of the bracket housing. The method involves transmitting a signal in the form of a pulse along the signal conductor, receiving a reflected received signal, relaying the received signal to the control and evaluation unit. In addition to the simple verification of the presence of a leak, a change in the received signal can also be quantified by the frequency spectrum of the received signal being determined and monitoring of the level meter carried out in the frequency domain.

Abstract: Suspension for a weighing cell, where the suspension comprises a base structure and a moveable structure, and where a load cell is interposed and connected between said base structure and said moveable structure, where the suspension is generally shaped as a parallelogram, said parallelogram having two parallel primary elements, where one primary element is fastened to the base structure and the other primary element is fastened to the moveable structure, and where between the primary elements on respectively the base structure and the moveable structure, two in a rest position parallel secondary elements are arranged, where each secondary element is provided with at least one bendable section, said bendable sections having the same characteristics with respect to bending, and that the primary elements comprises a cylindrical section and a fastening land in either end of the cylindrical section for fastening an end of the secondary elements.

Abstract: A weighing bar assembly includes a hollow structural part (1), with two load cells (2) positioned therein. The assembly further includes two ground support shoes (4). Each of the load cells (2) is attached at one end to the structural part (1) by a securing block (3) and at its other end to a corresponding ground support shoe (4).

Abstract: An optical fiber sensor includes: a transmitting unit configured to output two lights into an optical fiber, wavelengths of the two lights being different from each other at a specific time, and at least one of the wavelengths of the two lights varying with time; and a measuring unit configured to receive back-scattered light output from the optical fiber and detect a temporal variation of an optical phase at an arbitrary interval in a longitudinal direction of the optical fiber by measuring measure an interference state of the two lights.

Abstract: An interferometric vibration observation device includes a transmitting unit, a receiving unit and a signal processing unit. The transmitting unit transmits a transmission signal toward an observation object. The receiving unit receives a reflection wave from the observation object with a plurality of receiving antennas and generates a reception signal for each of the receiving antennas. The signal processing unit obtains a phase plane of the reflection wave to an antenna plane from a phase difference between the reception signals, identifies an arrival direction and a signal strength of the reflection wave, calculates a phase variation of the reflection wave from a certain direction, and generates an observation signal representative of a vibration of the observation object or a certain site of the observation object.

Abstract: A system and method for verifying a connection between a first and second connector. The system includes a transducer and a processor. The processor is configured to determine a velocity of the first connector when the first connector is moved to the second connector to form a coupling, calculate a time interval to the coupling based on the velocity detected at the set point and a position of the second connector, and receive, from the transducer, a signal during the time interval. The signal includes the sound generated when the coupling is formed. The processor analyzes the signal and identifies the sound of the coupling within the signal. The signal is filtered in the frequency domain and in the time domain, resulting in a filtered spectrogram. The spectrogram is compared to a pattern. The processor determines if the first and second connector are properly coupled based on the comparison.

Abstract: An integrated microfabricated vapor cell sensor includes a transparent sensor cell body. The cell body has a cavity for a sensor fluid vapor which is covered by a first plate attached to the cell body. The sensor has a first signal path extending from a first signal emitter, through the cell body, through the cavity, through the cell body again, and to a first signal detector, and a second signal path extending through the cavity. The second signal path intersects the first signal path in the cavity. The second signal path may extend through the cell body, or may extend through the first plate. The signal emitters and signal detectors are located in the integrated microfabricated vapor cell sensor.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

Abstract: A micro-fluidic system comprising means for optically trapping a particle and a Raman excitation source for causing Raman scatter from the particle whilst it is in the optical trap.

Abstract: A self-referencing mobile-compatible spectrophotometric system, including at least one light source, at least one spectral detection unit, and at least one reference sample. The system is configured to apply light from the at least one light source to a sample and receive a reflected light from the sample, and apply light to the at least one reference sample, and receive a reference reflected light from the at least one reference sample.

Abstract: The present disclosure discloses a spectrometer arrangement including an entrance-slit group including a slit wheel and a slit mask for introducing radiation into and for limiting the optical field of the spectrometer arrangement, a first dispersive element for spectrally decomposing the radiation in a main dispersion direction, and a second dispersive element for spectrally decomposing the radiation in a transverse dispersion direction that forms an angle with the main dispersion direction to yield a two-dimensional spectrum. The slit wheel is mounted rotatably about an axis of rotation and has a falcate opening having a width that changes depending on the angle. The slit mask includes an opening that is longer than a largest width of the falcate opening such that radiation radiates through the falcate opening of the slit wheel and the opening of the slit mask. The present disclosure further includes a corresponding method and an optical component group.

Abstract: A reflective relay spectrometer design based on reflective optical relay systems, which is more compact in physical size and superior in spectral imaging quality than previous designs, is disclosed.

Abstract: State-of-the-art portable Raman spectrometers use discrete free-space optical components that must be aligned well and that don't tolerate vibrations well. Conversely, the inventive spectrometers are made with monolithic photonic integration to fabricate some or all optical components on one or more planar substrates. Photonic integration enables dense integration of components, eliminates manual alignment and individual component assembly, and yields superior mechanical stability and resistance to shock or vibration. These features make inventive spectrometers especially suitable for use in high-performance portable or wearable sensors. They also yield significant performance advantages, including a large (e.g., 10,000-fold) increase in Raman scattering efficiency resulting from on-chip interaction of the tightly localized optical mode and the analyte and a large enhancement in spectral resolution and sensitivity resulting from the integration of an on-chip Fourier-transform spectrometer.

Abstract: In one example, an initial transform is stored for converting wavelength channel responses of a color measurement instrument to color readings. The initial transform is set in-factory by a manufacturer of the color measurement device. A color selection of a sample is subsequently retrieved from a database, where the color selection was made by an end user in response to a color reading by the color measurement instrument using the initial transform. An adjustment to the initial transform is calculated using the color selection. The adjustment is then sent to the color measurement instrument for use in making future color measurements.

Abstract: A mean radiant temperature sensor is used to measure radiant heat exchange to determine comfort. Disclosed herein are a spherical-motion average radiant temperature sensor (SMART Sensor) device or system, and an associated method, for taking an average overall global reading while also being able to record weighting for different directions easily in spherical coordinates.

Abstract: Systems and methods for monitoring and/or controlling a temperature related condition of an item, including from a location different than a location at which the food item is located, are disclosed. At least one remote unit has a temperature sensor, a computing device configured to analyze measured temperature data, and a user interface. The user interface displays information regarding a temperature related condition of the item via light or visual signals. A control unit may wirelessly communicate with the remote unit. The control unit may be used to program the user interface to display particular light or visual signals in response to particular temperature related conditions. The control unit may instruct a temperature control mechanism to adjust the temperature of the item.

Abstract: A piezoelectric device package includes a board having a lower surface and an upper surface, a plurality of terminals disposed on the lower surface, a piezoelectric device disposed on the upper surface, a thermistor layer and a resistance layer disposed on the lower surface, and a cap lead covering an upper portion of the board.

Abstract: A fiber-based thermal property probe is disclosed. In embodiments, the thermal property probe is a modulated optical reflectance system and includes a pump beam source configured to transmit a pump beam through a pump fiber, the pump beam configured to heat a sample and the pump fiber having a pump fiber sample end. The fiber-based thermal property probe further includes a probe beam source configured to transmit a probe beam through a probe fiber, the probe beam configured to measure the temperature of the sample and the probe fiber having a probe fiber sample end. Additionally, the system includes a ferrule configured to hold the pump fiber sample end and the probe fiber sample end at a fixed, known separation distance from each other.

Abstract: An Impact sensor for detecting strain or strain rate in a composite having one or more sensor nodes using a fracto-mechanoluminescent (FML) material, such as EuD4TEA crystals, encased in an optically transparent material such as PDMS. Optical fibers transmit light emitted by the FML material due to strain experienced by the composite. For honeycomb composites, the transparent material is disposed within cells of the honeycomb composite. A reflective material such as Mylar either surrounds the optically transparent material or lines the cell. The intensity of the light emitted by the FML material is related to the magnitude of strain or strain rate experienced by the composite as well as the distance of the FML material from the surface of the composite that receives the impact. Multiple sensor nodes disposed at different distances from the impact surface can provide a three-dimensional map of damage experienced by the composite.

Abstract: Various embodiments may provide a pressure sensing electronic device. The electronic device may include a tactile sensor configured to determine an external pressure. The electronic device may also include a memory device electrically coupled to the tactile sensor. The memory device may be configured to switch from a first state to a second state upon the external pressure determined by the tactile sensor exceeding a predetermined threshold when a writing current flows through the tactile sensor and the memory device.

Abstract: The pressure sensor comprises the diaphragm, an electrode body, a housing, an inlet pipe, and a thermal buffer member. The diaphragm includes a pressure receiving surface configured to receive a pressure of a measured target fluid. The electrode body includes an electrode surface facing a rear surface of the pressure receiving surface with a gap interposed therebetween. The housing supports the diaphragm so as to form a measuring chamber by surrounding the pressure receiving surface. The inlet pipe is coupled to the housing and configured to guide the measured target fluid into the measuring chamber. The thermal buffer member is disposed on the inlet pipe and has a predetermined heat capacity. Accordingly, the diaphragm is unlikely to bend due to a rapid temperature change in a fluid guiding pipe disposed a fluid line.

Abstract: An aircraft engine pressure transducer includes a first pressure transducer channel and a second pressure transducer channel. The first pressure transducer channel is configured to sense a pressure of the aircraft engine over a first pressure range and a first temperature range. The second pressure transducer channel is configured to sense the pressure of the aircraft engine over a second pressure range and a second temperature range, the second pressure range being a subset of the first temperature range, and the second temperature range being a subset of the first temperature range.

Abstract: A pressure sensor device with good temperature characteristics. An auxiliary fluid introduction path is provided in a bottom wall portion of a first case to introduce a fluid to the vicinity of a recessed portion of the bottom wall portion where an integrated circuit with a large change in temperature characteristics is mounted such that the temperature of the integrated circuit becomes the same as or close to the temperature of the fluid.

Abstract: A sensor sheet is manufactured by forming a conductive heat-sensitive material 5 over first wiring electrodes 3a and forming second wiring electrodes 4a over the conductive heat-sensitive material 5. For this reason, no adhesion surface (boundary surface), which is formed when adhesion is performed later, exists between the first wiring electrode 3a and the conductive heat-sensitive material 5 and between the conductive heat-sensitive material 5 and the second wiring electrodes 4a.

Abstract: A pressure detecting device that detects the combustion pressure in an internal combustion engine includes: a piezoelectric element that outputs a charge signal corresponding to the pressure in a combustion chamber; and a mounting board on which are mounted an integrating circuit that integrates the charge signal outputted by the piezoelectric element and an amplifier circuit that amplifies a voltage signal obtained by integration. On the mounting board are provided: a power receiving terminal that receives a power-supply voltage from a controller; an output terminal that outputs an output signal after amplification to the controller; and a grounding terminal for making the ground of the controller and the mounting board common. Furthermore, in the mounting board, the grounding terminal and grounding ends of the integrating circuit and the amplifier circuit are connected by way of grounding ferrite beads.

Abstract: In a method for calibrating at least one sensor having at least one signal-conducting connection to at least one signal converter, a sensor characteristic is recorded by the determination of at least one measurand at at least two different temperatures, the extent of the influence of a further value influencing the sensor is determined from the sensor characteristic by means of a functional relation, the extent of the influence of the further influencing value is considered in the calibration and the influence of the further influencing value is balanced in the calibration. As a result, the influence of a further influencing value acting on the sensor is corrected. The sensor can be a structure borne sound sensor which may have a membrane with a sensor element arranged on the membrane. Vibrations on the membrane can be captured by the sensor element, such as a piezoresistive element.

Abstract: A pipeline leakage detection system and a method thereof are provided. In the pipeline leakage detection system, when a ball-type detection device is operated on a pipeline and moved by an external force, a processing module can, according to angular velocity data outputted by a posture detection module, control motors to drive wheels, so as to prevent a ball-type casing of the ball-type detection device from being rotated by the external force; a wireless transceiver module transmits thermal image signals around the pipeline captured by multiple infrared thermal imagers to a monitoring terminal; and the monitoring terminal combines the thermal image signals, according to a sequential order of pieces of time information of the thermal image signals and pieces of identification information of the infrared thermal imagers, to form multiple time images, and the monitoring terminal can analyze the time images to determine whether the pipeline has a leaking location.

Abstract: The invention relates to a device for detecting a leak in a sealed enclosure, comprising an organic light-emitting diode intended to be placed inside the enclosure; and a device for measuring a value representative of at least one of the following parameters: a) the luminous efficacy of the diode; and b) the impedance of the diode.