Abstract: A system for detecting a characteristic of a fluid. In one example, the system includes a tube, a float, a sensor, and a controller. The tube is configured to receive the fluid. The float is located within the tube. The sensor is configured to sense a position of the float. The controller is configured to receive, from the sensor, the position of the float, and determine a characteristic of the fluid based on the position of the float. The characteristic may be a density or a concentration.

Abstract: A gyro sensor includes a plurality of beams connected via a turnaround part. A groove is provided on a main surface of at least one beam of the plurality of beams. Wall thicknesses on the main surface of two sidewalls facing each other of the groove in a direction orthogonal to a longitudinal direction of the beam satisfy 0.9?T1/T2?1.1, where T1 is the wall thickness of one sidewall and T2 is the wall thickness of the other sidewall.

Abstract: A printed circuit board comprises a board main body, a sensor, an external connection pad, and a hollow-structured electrical conductor. The board main body has a top face and a bottom face opposite the top face. The sensor is mounted on one of the top face and the bottom face of the board main body. The external connection pad is provided on the top face or the bottom face of the board main body opposite the sensor. The hollow-structured electrical conductor extends through the board main body and electrically connects the sensor to the external connection pad.

Abstract: Equipment including an inertial detector device provided with fastener studs enabling the inertial device to be fastened to a support frame. At least one of the fastener studs has two elements, one of which elements is fastened to the support frame and has a bearing surface that is in contact with a bearing surface of the support frame. The other element is fastened to the inertial device and has a bearing surface that is in contact with a bearing surface of the inertial device, which two elements are suspended relative to each other by means of a body made of elastically deformable material. At least one of the elements is fastened by at least one screw. The corresponding bearing surfaces is provided respectively with a centering portion and with a housing for receiving said centering portion with a fit that allows clearance of no more than 50 ?m.

Abstract: According to embodiments, an ultrasonic inspection apparatus comprises: an ultrasonic array probe having a plurality of ultrasonic elements; an estimated shape reflected wave arrival time calculator for computing the estimated shape reflected wave arrival time for the estimated shape reflected wave on the basis of the estimated sound velocity in the test object; an actual shape reflected wave arrival time extractor for extracting the actual shape reflected wave arrival time on the basis of the actual shape reflected wave; a shape reflected waves time difference calculator for computing the difference by subtracting the actual shape reflected wave arrival time from the estimated shape reflected wave arrival time as shape reflected waves time difference; and a delay time calculator for computing the delay times for mutually shifting the timings of ultrasonic wave transmission and ultrasonic wave reception by the ultrasonic elements, considering the shape reflected waves time differences.

Abstract: A distributed acoustic sensing (DAS) system has a coherent light source device that repeatedly sends a coherent interrogating light pattern (CILP) into an optical sensing fiber during a measurement duration that is equal to or greater than a down-up travel time of the optical sensing fiber. The CILP is one of a plurality of patterns composed of coherent carrier light. A detection device detects backscattered light in the optical sensing fiber in response to the CILP and generates a signal indicative of the detected backscattered light. An evaluation device analyses the signal. Each CILP has similar physical properties that render the light patterns indistinguishable by comparing physical properties of the backscattered light responsive to at least two successive interrogating light patterns as detected. The coherent light source device can change the time between successively sent interrogating light patterns after the passing of at least one measurement time duration.

Abstract: Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of construction material is disclosed. The gauge may include an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field. Further, the electromagnetic sensor may be operable to produce a signal representing the measured response by the construction material to the electromagnetic field. An acoustic detector may be operable to detect a response of the construction material to the acoustical energy. Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy. A material property calculation function may be configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the acoustic detector.

Abstract: Externally generated noise can be coupled into a fluid carrying structure such as a pipe, well, or borehole so as to artificially acoustically “illuminate” the pipe, well, or borehole, and allow fluid flow in the structure or structural integrity to be determined. In the disclosed system, externally generated noise is coupled into the structure being monitored at the same time as data logging required to undertake the monitoring is performed. This has three effects. First, the externally generated sound is coupled into the structure so as to “illuminate” acoustically the structure to allow data to be collected from which fluid flow may be determined, and secondly the amount of data that need be collected is reduced, as there is no need to log data when the structure is not being illuminated. Thirdly, there are signal processing advantages in having the data logging being undertaken only when the acoustic illumination occurs.

Abstract: Acoustic volume indicators for determining liquid or gas volume within a container comprise a contactor to vibrate a container wall, a detector to receive vibration data from the container wall, a processor to convert vibration data to frequency information and compare the frequency information to characteristic container frequency vs. volume data to obtain the measured volume, and an indicator for displaying the measured volume. The processor may comprise a microprocessor disposed within a housing having lights that each represent a particular volume. The microprocessor is calibrated to provide an output signal to a light that indicates the container volume. The processor may comprise a computer and computer program that converts the data to frequency information, analyzes the frequency information to identify a peak frequency, compares the peak frequency to the characteristic frequency vs. volume data to determine the measured volume, and displays the measured volume on a video monitor.

Abstract: A method and device are provided for determining a mode of detection of an element that reflects ultrasonic waves, wherein it comprises at least the following steps: For each point P of a given volume Zr, determining an ultrasonic field value Aijm (P) for N emitter-receiver pairs (i, j) and for one detection mode m, computing a number C m ? ( P , n ? ) = ? i , j = 1 N ? ? c ij m ? ( P , n ? ) of reflections of the wave where c ij m = { 1 if ? ? ? n ? ij m ? ( P ) · n ? ? = 1 0 if ? ? not with {right arrow over (n)}ijm(P) the normal formed by the “forward” direction {right arrow over (d)}i and the “backward” direction {right arrow over (d)}j of the ultrasonic wave emitted and reflected by the reflecting element, computing the energy value Em(P,{right arrow over (n)}) for each point P of the zone Zr, with {right arrow over (n)} and for a plurality of modes m with E m ? ( P , n ? ) = ? i , j = 1

Abstract: Sense amplifiers for use in connection with microelectromechanical system (MEMS) gyroscopes are described. The sense amplifiers may be configured to change the level of a gyroscope signal, i.e., the signal produced by a gyroscope in response to angular motion, to a level suitable for processing circuitry arranged to infer the angular velocity. The sense amplifier may further provide a DC discharge path allowing for discharge of the DC component of the output signal. The DC discharge path may include an anti-aliasing filter and a resistive circuit. The anti-aliasing filter may filter the output signal to maintain the resistive circuit in the linear region. The anti-aliasing filter may be designed with a frequency response such that discrete frequency sub-bands are blocked or at least attenuated. The frequency sub-bands may be tuned to substantially match the gyroscope's resonant frequency and its integer multiples.

Abstract: The apparatus comprises a bottom plate, a first side plate (304), and a second side plate (305). The top of the first side plate is connected to the top of the second side plate by an arc-shaped fiber carrying channel (310, 311). A first arc-shaped cover (300) and a second arc-shaped cover (301) are hinged to the tops of the first side plate and the second side plate, respectively. A first arc-shaped pressing body (308) and a second arc-shaped pressing body (309) are fixedly connected to the lower end surfaces. A first sensing optical fiber (312) and a second sensing optical fiber (313) located in the arc-shaped fiber carrying channel are disposed below the first arc-shaped pressing body and the second arc-shaped pressing body respectively. The first arc-shaped cover is connected to the second arc-shaped cover by a locking apparatus.

Abstract: A micromechanical rotational rate sensor system includes a first rotational rate sensor device that can be driven rotationally about a first axis in oscillating fashion for acquiring a first external rate of rotation about a second axis and a second external rate of rotation about a third axis, the first, second, and third axes being perpendicular to one another; and a second rotational rate sensor device, capable of being driven in linearly oscillating fashion along the second axis, for acquiring a third external rate of rotation about the first axis. The first rotational rate sensor device is connected to the second rotational rate sensor device via a drive frame device. The drive frame device has a first drive frame and a second drive frame that are capable of being driven in oscillating fashion by the drive device with opposite phase along the third axis.

Abstract: A sensor platform being installed on a vehicle traveling on a road or a sports training device, the sensor platform including, a sensor unit configured by an acceleration sensor for capturing environmental data transmitted from an object to be surveyed, a data selector/variable filter for selecting necessary data or limiting data frequency of the environmental data transmitted from the sensor unit, a sound sensor for capturing sound signals from the object to be surveyed, and a processing unit for running computer programs including algorithms for controlling the sensor unit and the data selector/variable filter, processing output data from the data selector/variable filter and the sound sensor, and setting a threshold level, wherein the processing unit processes the output data from data selector/variable filter when the sound signal level is more than the threshold level.

Abstract: A wheel assembly including a sensor for measuring wheel movement is provided comprising: a frame member; an axle fixed to the frame member; a wheel rotatably mounted to the axle and comprising a wheel recess; a code ring located within the wheel recess for rotation with the wheel; and a sensor device coupled to the frame member and located adjacent to the code ring. The sensor device senses movement of the code ring and generates an output signal indicative of the wheel movement. A materials handling vehicle comprising the wheel assembly is also provided.

Abstract: This disclosure reveals a resonator where at least one suspended inertial mass is driven into rotational oscillation by a piezoelectric drive transducer, or where the rotational motion of at least one suspended inertial mass is sensed by a piezoelectric sense transducer. The disclosure is based on the idea of attaching suspenders to the inertial mass with at least one flexure, which allows the end of the suspender which is attached to the inertial mass to rotate in relation to the inertial mass at this attachment point when the inertial mass is in motion. The resonator may be employed in a resonator system, a clock oscillator or a gyroscope.

Abstract: Exemplary embodiments are directed to instrumented fasteners and associated damage detection systems for detecting damage in an assembled structure secured together by at least one instrumented fastener. The instrumented fastener forms a transducer assembly for detecting damage in the assembled structure. The fastener can include a cavity disposed at one end of the fastener. The transducer assembly includes an electromechanical unit at least partially inserted into and mechanically coupled within the cavity of the fastener. The electromechanical unit can include a piezoelectric element.

Abstract: A circuit device includes a filter circuit to which a detection signal is input and which has a resistance element including a metal thin film layer, and an A/D conversion circuit performs A/D conversion of the detection signal filtered by the filter circuit and outputs detection data.

Abstract: A device for measuring in real time the volume of a partially upturned bottle has a sleeve that extends around the upturned bottle with an open distal end and a closed proximal end. An accelerometer in the device determines the vertical direction and the angle between the vertical direction and the longitudinal axis of the bottle. Another accelerometer measures the force exerted by the bottle in the direction of the longitudinal axis. These parameters are used to calculate the total mass and volume of the upturned bottle. A dimmable screen displays the total mass, total volume, change in mass and/or change in volume.

Abstract: A sensor element includes: a base portion; a drive arm coupled to the base portion via a coupling arm extending on a first axis from the base portion; a first detection arm extending from the base portion in a positive direction of a second axis orthogonal to the first axis and a second detection arm extending from the base portion in a negative direction of the second axis in the plan view; a drive signal wiring disposed on the base portion along the first axis in the plan view; and a first detection signal wiring and a second detection signal wiring disposed on the base portion in the plan view, in which shapes of the first detection signal wiring and the second detection signal wiring are different from each other in line symmetrical shapes based on the first axis in the plan view.