Abstract: Systems and methods for environmental monitoring of high activity facilities, generally comprising low profile devices having sensing elements for various environmental uses, designed to provide the wireless communications network as a basis for performing a wide variety of tasks. The devices may be installed on an existing electrical system and may measure, among other things, electrical current on various circuits.

Abstract: Embodiments of the present disclosure allow third-parties to collect data at a utility flow meter without substantial interference with the utility's ability to collect data for its own purposes. In an exemplary embodiment, a sub-meter interrupter is included that has a default position to allow for utility reading of a utility flow meter and a second position that allows for third-party reading of the utility flow meter. A third-party flow monitor or interrupter can also monitor attempted “reads” by the utility while the third-party flow monitor is reading the utility flow meter and can switch to the default (e.g., utility read setting) so as to allow the utility to conduct its read.

Abstract: A position detection device includes a first magnetic field generation unit for generating a first magnetic field, a second magnetic field generation unit for generating a second magnetic field, and a magnetic sensor. The relative position of the second magnetic field generation unit with respect to the first magnetic field generation unit is variable. The magnetic sensor detects a composite magnetic field of the first and second magnetic fields, and generates a detection signal corresponding to the direction of the detected magnetic field. Varying the relative position of the second magnetic field generation unit with respect to the first magnetic field generation unit varies the strength of the second magnetic field at the detection position. At the detection position, a relative angle formed by the direction of the second magnetic field with the direction of the first magnetic field is greater than 90° and smaller than 180°.

Abstract: A rotation angle detecting device includes: a rotating part rotating integrally with the rotating shaft and including a detected portion; an A-phase detector detecting change of a physical quantity caused by rotation of the rotating part, inside a first detection field over the detected portion and outputting an A-phase signal; and a B-phase detector detecting change of the physical quantity caused by rotation of the rotating part, inside a second detection field located over the detected portion and outputting a B-phase signal that is out of phase with the A-phase signal. The second detection field is shorter than the first detection field with respect to the direction perpendicular to the rotating direction of the rotating part.

Abstract: This disclosure provides systems, methods and apparatus for detecting foreign objects. In one aspect an apparatus for detecting a presence of an object is provided. The apparatus includes a resonant circuit having a resonant frequency. The resonant circuit includes a sense circuit including an electrically conductive structure. The apparatus further includes a coupling circuit coupled to the sense circuit. The apparatus further includes a detection circuit coupled to the sense circuit via the coupling circuit. The detection circuit is configured to detect the presence of the object in response to detecting a difference between a measured characteristic that depends on a frequency at which the resonant circuit is resonating and a corresponding characteristic that depends on the resonant frequency of the resonant circuit. The coupling circuit is configured to reduce a variation of the resonant frequency by the detection circuit in the absence of the object.

Abstract: In a related-art resolver, a front and a back of a stator core cannot be distinguished, and it is difficult to mass-produce the resolver while matching directions of shear drops and burrs. Thus, assembly accuracy of the resolver is degraded. Further, productivity and assembling ability are degraded because electromagnetic steel sheets are laminated by rotary lamination. The present invention provides a resolver including: a resolver stator including: a stator core formed of electromagnetic steel sheets, which have teeth, and are laminated without rotary lamination; a one-phase excitation winding; and two-phase output windings; and a resolver rotor arranged to be opposed to the resolver stator, in which the stator core has marks which enable distinction of a rolling direction of the stator core and distinction of a front and a back of the stator core.

Abstract: A method of determining sub-divisional error of an encoder apparatus, which is configured to measure relative position of relatively moveable parts of an apparatus on which an inspection device for inspecting an artefact is mounted, includes causing the inspection device to inspect a feature so as to obtain measurements of a surface of the feature by relatively moving the relatively moveable parts of the apparatus. The method also includes using the measurements of the surface of the feature obtained by the inspection device during the inspection of the feature to determine the sub-divisional error of the encoder apparatus.

Abstract: A device for sensing the relative rotary position of first and second parts about a rotation axis, the device comprising a follower constrained to move on a first track fast with the first part and on a second track fast with the second part, the first track being linear and the second track comprising a plurality of circular arcs and at least one transition section connecting one of the circular arcs to another, the tracks being arranged so as to convert relative rotation of the parts into linear motion of the follower, wherein the second track is generally spiral, each circular arc is of constant radius about the rotation axis and the first track is perpendicular to the rotation axis.

Abstract: A movement detection unit includes a movable body, a first sensor, a second sensor, and a signal processor. The movable body performs a movement in a first direction. The first sensor detects a first magnetic field change which is caused by the movement of the movable body and outputs a first signal. The second sensor is provided in the first direction at a location different from a location of the first sensor. The second sensor detects a second magnetic field change which is caused by the movement of the movable body and outputting a second signal. The signal processor includes a signal generating circuit that generates a third signal and a fourth signal on a basis of the first signal. The third signal and the fourth signal have waveforms different from each other.

Abstract: A sensor unit for measuring the position of a component that is movable relative to the sensor unit includes a metal body, which has a first opening. An electronic component is arranged in the first opening such that a gap is provided between the electronic component and the metal body, the gap being filled with an electrically insulating molding compound. In addition, an electrically insulating first layer is applied on the electronic component and on the molding compound. The electronic component is electrically contacted with a circuit trace, and the circuit trace is routed through the first layer in a first section and extends on the first layer in a second section.

Abstract: The invention relates to a sensor device and method for detecting measurement data relating to the absolute position of a linearly or rotationally moveable body, comprising an optical sensor system, wherein the optical sensor system uses exclusively zero-order rejections for the position measuring, and a magnetic sensor system which emits a second sensor output signal depending on the position to be determined of the moveable body, wherein the gauge of the optical sensor system and the gauge of the magnetic sensor system are integrated in a common gauge body, and a computer unit which is provided to obtain the first sensor output signal and the second sensor output signal and to generate a common sensor output signal from the first sensor output signal and the second sensor output signal, wherein the current period of the second sensor system can be deduced from the first sensor output signal at every time, in order to calculate clear absolute position information based on the first and second sensor output s

Abstract: A sensor mounting system for mounting onto a sensor mounting bracket a sensing device and a cover that covers the sensing device. The sensing device is mounted onto the sensor mounting bracket by sliding from a sensing device delivery position to a sensing device mounted position. The cover pivots relative to the sensing device from a cover delivery position to a cover locked position. When the sensing device is mounted onto the sensor mounting bracket, the cover is in the cover delivery position and contacts the sensor mounting bracket such that by pivoting the cover towards the cover locked position, the cover causes sliding of the sensing device into the sensing device mounted position.

Abstract: In one embodiment, a sensor assignment apparatus includes a measured value storage, a generator, a calculator, and a selector. The measured value storage stores measured values of a plurality of sensors. The generator generates combinations of sensors and arguments of a function to diagnose sensors by assigning sensors to its arguments. The calculator calculates evaluation values which are based on the function values. The function values are obtained by applying diagnostic functions to measured values for all combinations generated by the generator. The selector selects at least one combination from the resulting set of the generator by considering the evaluation values of combinations calculated by the calculator.

Abstract: A flowmeter for use downhole estimates fluid flow with a helically shaped spinner member disposed in a path of the flowing fluid. Features, such as magnets, are mounted in the spinner member so that spinner member rotational rate can be sensed, thereby estimating fluid flow. Discontinuities along an axis of the spinner member define segments that are adjacent one another. Adjacent segments can differ angularly, by pitch, as well as by length. With the discontinuities, segment design is less constrained by the geometry of adjacent segments, so that feature locations on the spinner member are maintained, while maximizing sensitivity of the spinner member to fluid flow.

Abstract: The invention relates to a variable-area flow meter with a measuring tube in which a float provided with at least one permanent magnet and movable by a fluid flowing through the measuring tube is arranged, and with an indicating device arranged outside the measuring tube, said indicating device comprising a magnet holder rotatably mounted about a rotation axis, said magnet holder holding at least one follower magnet that follows the movement of the permanent magnet, and having an indicating element which reflects the movement of the at least one follower magnet, wherein at least one follower magnet in the magnet holder is arranged in such a manner that its magnetic axis is inclined in relation to the rotation axis by an angle (?) not equal to 90°.

Abstract: A flowmeter (5) is provided having a housing (28) configured to accept a flow of a process material. A diaphragm (18) is disposed in the housing (28), and is deformable by the flow of the process material. A sensor (48) is configured to detect a deformation in the diaphragm (18), and the flowmeter (5) is configured to measure the flow of the process material.

Abstract: A method and apparatus for determining a property of a fluid in a vessel. The method uses magnetic tracer particles and an externally applied magnetic field which orients the particles. When the fluid moves, it changes the orientation of the tracer particles, thus changing the magnetic fields. These changes are detected by external magnetic field sensors. By using mathematical models, the property of the fluid in the vessel is determined from the detected magnetic field. In this manner, fluid vorticity, velocity, strain and stress may be estimated.

Abstract: A flow detector for monitoring an adhesive flow in an adhesive applicator includes a sensor device arranged in the adhesive flow. The sensor device is formed as a capacitive sensor.

Abstract: A flow meter for determining the flow rate of a fluid through a conduit, including an upper body having an inlet chamber, an acoustic channel, an outlet chamber, a sound wave generator, and a sound wave receiver. The inlet chamber, acoustic channel, and outlet chamber are fluidly connected together. The acoustic channel is a non-linear pathway that is symmetrically dimensioned. The sound wave generator is configured to create a sound wave that moves along the liquid pathway formed by the acoustic channel. The receiver detects that sound wave that has moved through the acoustic channel and such information is used to determine the flow rate of the fluid through the flow meter.

Abstract: A method of and apparatus for monitoring fluid flow passing within a pipe is provided. The method includes the steps of: a) providing a flow pressure value and a flow temperature value for the fluid flow within the pipe; b) providing a fluid flowmeter operable to be attached to an exterior of the pipe; c) providing one or more of an additional flow related measurement (e.g., DP, SOS, etc.); d) providing a processor adapted to include an equation of state model for the pressure, volume, and temperature properties for the fluid flow, and further adapted to receive composition data values for the fluid flow, the flow pressure value, and the flow temperature value, and the flow velocity signals from the flowmeter; and e) determining a volumetric flow rate of one or more phases of the fluid flow.

Abstract: A method for an ultrasonic time-of-flight flow meter (1) includes driving an ultrasonic transducer (2, 3) using a first waveform (V1(t)) for a first duration (?t1), the first waveform (V1(t)) configured to cause oscillation (21) of the ultrasonic transducer (2, 3). The method also includes driving the ultrasonic transducer (2, 3) using a second waveform (V2(t)) for a second duration (?t2). There is a discontinuity between the first waveform (V1(t)) and the second waveform (V2(t)). The second waveform (V2(t)) and the second duration (?t2) are configured to maintain a voltage (VT(t)) across the ultrasonic transducer (2, 3) within a predetermined range (VH, VL).

Abstract: Flow measurement system comprising a flow tube for the fluid whose flow rate is to be determined, wherein said system comprises at least three ultrasound transducer circuitry, wherein each circuitry comprises an ultrasound transducer arranged for transmitting ultrasound signals through said fluid in a transmitting phase, and for receiving transmitted signals from another of said at least three ultrasound transducers in a receiving phase, multiple receiving circuits, wherein each receiving circuit is arranged for reading out one of said at least three ultrasound transducers in a corresponding receiving phase thereof, and multiplexer circuitry ground arranged for selectively connecting each of said multiple receiving circuits to a different one of said at least three ultrasound transducers, respectively.

Abstract: A sensor for determining at least one parameter of a fluid medium, in particular an intake air mass flow of an internal combustion engine, flowing through a measuring channel is provided. The sensor includes a sensor housing, in particular a plug-in sensor that is introduced or introducible into a flow tube and in which the measuring channel is formed, and at least one sensor chip situated in the measuring channel for determining the parameter of the fluid medium. The sensor housing includes an electronics compartment for accommodating an electronic module, and an electronics compartment cover for closing the electronics compartment. The electronics compartment cover has electrically conductive properties at least in part. The electronic module is electrically conductively connected to an interior of the electronics compartment cover.

Abstract: A method for creating an asymmetric flowmeter manifold (202, 202?) is provided. The method comprises the steps of defining at least one flowmeter (5) application parameter. The method also comprises determining an area for at least a first flow path (402) and a second flow path (402?), and forming the asymmetric manifold with the determined flow path areas.

Abstract: The invention relates to a Coriolis flow sensor, comprising at least a Coriolis-tube, wherein the flow sensor comprises an excitation element for causing the tube to oscillate, as well as a detection element for detecting at least a measure of displacements of parts of the tube during operation. In some embodiments, the detection element comprises two detection elements that are positioned on both sides of the Coriolis tube, wherein the detection elements partly overlap each other.

Abstract: The invention relates to a hydrostatic metering system (10), in particular for metering fluids in mixing systems, comprising at least one metering pipe (11), a pressure sensor (13), which is arranged at a base part (12) of the metering pipe (11), an inlet valve (22), by means of which the fluid can be fed to the metering pipe (11), and a metering valve (14), by means of which the fluid can be discharged from the metering pipe (11). Furthermore, the invention relates to a method for metering fluids by using the hydrostatic metering system (10).

Abstract: A measuring device includes a first body, a second body slidably combined with the first body, a first pressure sensing component, and a control unit. The first body is for supporting a cup receiving liquid. The first pressure sensing component is disposed between the first body and the second body for sensing weight of the cup and the liquid and generating a signal corresponding to the weight. The control unit is electrically connected to the first pressure sensing component. The control unit determines a volume variation of the liquid according to a weight variation of the cup and the liquid calculated based on a difference between signals transmitted from the first pressure sensing component at different time points.

Abstract: An integrated sensor unit for estimating a quantity of fluid in a container includes a pressure sensor configured to measure a pressure at a physical location of the sensor unit, an acceleration sensor configured to measure at least three components of an acceleration vector at the physical location of the sensor unit, and a temperature sensor configured to measure a temperature at the physical location of the sensor unit. The sensor unit is configured to produce an output signal comprising the pressure, acceleration, and temperature measurements.

Abstract: An electro-optic liquid sensor may include a light source, a light detector, a prism, and a reflective optical member. The optical member may be arranged to reflect light emitted by the light source to the light detector when a liquid is disposed between the light source and the optical member. The electro-optic sensor may enable assessment of its operational state in the presence of liquid, thus improving on known electro-optic liquid sensors. A method of operating a sensor to assess the presence of liquid is disclosed.

Abstract: A system for monitoring a floating roof of a liquid storage tank and a method for use of the system are described. The system includes linear position measuring devices to determine the vertical location and orientation of the floating roof within the storage tank and one or more transmitters to relay such information to a monitoring, recording, or control device, or to a remote computer network location. Typically, three measuring devices are used, positioned at or near the top of the storage tank and generally equally spaced around the perimeter of the tank. The system and method are useful to monitor the position and inclination of a liquid storage tank floating roof, such as may be used in the petrochemical, chemical and other industries where such storage tanks are in use.

Abstract: A method of dynamically generating an acoustic noise map of an industrial zone to be used for protecting operators within the zone from exposure to acoustic noise above a safety threshold, the method comprising collecting acoustic noise data using a network of wireless acoustic sensors located within said zone, generating an acoustic noise map using the collected noise data and a numerical model of the propagation of acoustic noise within the zone.

Abstract: There is provided a method for manufacturing an optical-fibre sensor device, including an enclosure defining a cavity and an optical-fibre sensor including an optical-fibre and a device for holding the sensor rigidly connected to the optical fibre, the optical fibre passing through the holding device between two attachment points. The method comprises: positioning the optical-fibre sensor in the enclosure to pass the fibre through two passage openings provided on the enclosure, which defines two optical-fibre portions in the enclosure, on either side of the holding device, each fibre portion extending between one of the attachment points and one of the passage openings; holding the optical-fibre sensor in position; performing a differential elongation of the enclosure relative to the optical-fibre sensor in the longitudinal direction and towards the outside of the enclosure, the optical-fibre sensor remaining held in position; attaching the optical fibre to the enclosure at the passage openings.

Abstract: A light/voltage converter circuit for converting intensity fluctuations of light into an alternating voltage measurement signal includes a photodiode configured to detect the light and a transformer comprising a primary coil and a secondary coil. The primary coil is connected in a series circuit to the photodiode, and the alternating voltage measurement signal is applied to the secondary coil. An electrical network is configured to block direct current and conduct alternating current. The electrical network is connected in parallel with the series circuit consisting of the primary coil of the transformer and the photodiode.

Abstract: An optical safety beam method and system has a transmitter that periodically sends bursts of light pulses with varying strengths. The receiver analyzes the received light pulses to automatically adjust its sensitivity and to detect when the light path is partially obstructed even when there are stray light pulse reflections that reach the receiver.

Abstract: A Thomson scattering measurement system according to the present disclosure includes: a transfer optical system provided on an optical path of a slit light beam group generated by division through a slit array and configured to transfer the slit light beam group to a plurality of transfer image groups separated from each other; and a second slit provided on an optical path of light from the transfer image groups and configured to selectively allow light from a plurality of transfer images positioned on a straight line extending in a direction corresponding to a first direction to pass through the second slit, the transfer images corresponding to slit light beams at positions different from each other in a second direction in the slit light beam group among transfer images included in the transfer image groups.

Abstract: Reflectometer, Spectrophotometer, Ellipsometer and Polarimeter Systems that utilize 1) electromagnetic radiation energy absorbing or reflecting material of spatially distributed different optical densities and 2) wavelength dependent electromagnetic radiation energy aperturing, or both, placed near the entry to said multi-element detector, to improve detector capability to monitor intensity vs. wavelength spectra entered thereinto and provide more uniform detector output, while preferably maintaining beam information content.

Abstract: An improved method for integrating curve peaks as compared to techniques such as the trapezoidal rule wherein integration parameters are at fixed x-axis positions. Integration parameters are instead specified relative to a peak center, which allows the peak to shift over time due to hardware changes, temperature fluctuation, pressure changes, etc., while maintaining integration parameters at optimal locations for that peak. As such, the present disclosure finds particular utility in spectroscopy wherein, in the case of Raman spectroscopy, for example, specific wavenumber shift locations may drift over time, leading to inaccurate results based upon absolute integration parameters.

Abstract: A spectral image correcting apparatus includes: an image acquirer configured to acquire a spectral image; and a processor configured to detect a peak wavelength corresponding to a characteristic wavelength based on a differential value of a spectrum of the spectral image, and correct a curvature of the spectral image based on the detected peak wavelength.

Abstract: An optical measurement apparatus includes: a moving mirror that changes an optical path length of one of two beams generated by splitting light subject to measurement; a drive mechanism that causes the moving mirror to reciprocate a predetermined distance in linear motion; a measured light receiver that detects intensity of light generated by superimposing the two beams; and a computation processor that sets a plurality of measurement ranges within the predetermined distance and calculates a measurement value based on a change in the light intensity detected by the measured light receiver for each of the measurement ranges.

Abstract: Indoor gunshot detection analysis is performed in the presence of a fire alarm. A gunshot sensor, which includes infrared and acoustic sensors, is used to detect an infrared pulse, whether the pulse originates from a muzzle flash or a fire alarm strobe. The infrared pulse is determined to correspond to a strobe occurrence. An evaluation determines that a gunshot did or did not occur based on the strobe occurrence. In another embodiment, a gunshot is detected while the fire alarm is occurring, where the gunshot occurs at a different time from the strobe occurrence and can be sensed by the acoustic sensor. A fire alarm strobe frequency and duration are determined, and further strobe occurrences are edited. Editing detection edits out a sensing time window by the infrared sensor. When the strobe stops, editing is eliminated, but if the strobe restarts, then editing is resumed.

Abstract: A sensing device includes a pair of infrared sensors comprising respective temperature-sensitive transistors, which are configured to generate respective output signals in response to incident thermal radiation, and which are coupled together in a differential circuit topology that includes at least one differential amplifier that follows the temperature-sensitive transistors, so as to amplify a difference between the respective output signals.

Abstract: A monitor and alarm system is provided for a marine vessel having a rotatable propeller drive shaft supported by one or more water-cooled bearings contained in strut barrels mounted on struts extending from the vessel hull or in stern tube assemblies. A heat sensor on the hull senses the ambient temperature of the water surrounding the vessel and one or more sensors on one or more bearings sense the temperature of the bearings. The sensed temperatures are electrically communicated via wires or wirelessly to gauges for monitoring and to a processing unit. The processing unit compares the sensed temperatures and generates a signal to an alarm device to initiate a bearing overheat warning or alarm if the differential between the bearing temperature and the ambient water temperature exceeds a predetermined amount.

Abstract: A capacitive force sensor that is inexpensive but highly sensitive, and is hardly affected by temperature changes and in-phase noise in the use environment. A force sensor includes: a deformable body having a force receiving portion and a fixed portion; a displacement body that is connected to the deformable body, and is displaced by elastic deformation caused in the deformable body; and a detection circuit that detects an applied force, in accordance with the displacement caused in the displacement body.

Abstract: A sensor includes a base layer and a pressing unit protruding with respect to the base layer. The pressing unit includes a first structure unit and a hollow second structure unit disposed on the first structure unit and having a bottom side opened. The second structure unit has a shape portion on a surface facing the base layer.

Abstract: Provided is a torque sensor that allows a surface-mount magnetic sensor to be disposed between magnetic collection rings adjacent to each other in a radial direction with respect to a rotational axis.

Abstract: A magnetoelastic shear force transducer with an interference field compensation comprises a hollow component section having an interior recess. A load can be applied onto the hollow component section. The load causes a shear stress in the hollow component section. The hollow component section includes at least one annular magnetoelastically active section having a magnetic polarization surrounding the recess and magnetoelastic properties. Magnetic-field sensors include at least one magnetic-field sensor in the magnetoelastically active section and a magnetic-field compensating sensor associated with the magnetic-field sensor in the magnetoelastically active section. The magnetic-field compensating sensor is arranged outside the magnetoelastically active section. A sensor signal of the magnetic-field sensor is processed along with a compensating signal of the magnetic-field compensating sensor to reduce the influence of an interfering magnetic field.

Abstract: The invention relates to a method for measuring the torque of a drive unit (10), particularly a vehicle drive unit (10), said drive unit (10) comprising at least one bearing (20) for connecting to a fixed support point (21), and at least one sensor (22) being provided which measures a change in force and/or position, particularly a relative rotation of the drive unit (10), as a sensor value, wherein a torque at the drive unit (10) is determined as a measurement value on the basis of said sensor value.

Abstract: A sensor has a sensor body with a first face and a second face opposite to one another, and a circuit arrangement supported by the sensor body that includes a first electrical circuit pattern on the first face, a second electrical circuit pattern on the second face, connection means, which electrically connect the first circuit pattern to the second circuit pattern and has at least one through hole that extends axially between the two faces of the sensor body. A plurality of terminals are electrically connected to the first circuit pattern and/or the second circuit pattern. The at least one through hole is preferably closed at the second face of the sensor body via a closing member (30) having pre-formed body with a closing portion having a diameter, greater than a diameter, of the opening of the through hole at the second face of the sensor body.

Abstract: A differential pressure sensor module includes a base having a pair of process fluid pressure inlets and defining a sensor chamber having a sensor chamber inlet. A differential pressure sensor is disposed within the sensor chamber and has an inlet configured to receive a first pressure and provide a signal indicative of a difference between the first pressure and a sensor chamber pressure external to the differential pressure sensor within the sensor chamber. A pair of isolation diaphragms are provided in substantially the same plane, with each isolation diaphragm sealing a respective process fluid pressure inlet. A first fluid passageway is operably coupled to one of the isolation diaphragms and the inlet of the differential pressure sensor. A second fluid passageway is operably coupled to the other of the isolation diaphragms and to the sensor chamber inlet. An overpressure protection feature is operably coupled to the sensor chamber, the first fluid passageway and the second fluid passageway.

Abstract: A pressure measurement device includes a pressure sensor including a printed circuit card having a portion that is to be subjected to pressure for measurement. The printed circuit card has strain detectors mounted on the portion to measure deformation of the printed circuit card under the influence of the pressure. The device may be included in a measurement system.