Abstract: An elastic matrix determination method for a laminated iron core, which can optimally determine a shear modulus in two planes including a laminating direction of the laminated iron core included in an elastic matrix in a constitutive equation representing a stress-strain relationship used for vibration analysis, and also provided is a vibration analysis method. When performing a vibration analysis of a laminated iron core formed by laminating steel sheets using a constitutive equation representing a stress-strain relationship in a matrix representation, a shear modulus in two planes including a laminating direction of the laminated iron core included in an elastic matrix in the constitutive equation is determined depending on an average tightening pressure in the laminating direction of the laminated iron core.

Abstract: Utility meter for measuring thermal energy delivered to a point of consumption by a fluid supplied via a supply flow and a return flow, including a flow meter unit for measuring a supply flow rate or return flow rate of the fluid; a pair of temperature sensing probes for measuring temperatures of the supply flow and the return flow, each of the temperature sensing probes including a resistive temperature device; and a calculator device configured for executing a measuring algorithm for determining an amount of thermal energy delivered to the point of consumption over a period of time based on flow rates and temperatures received from the flow meter unit and temperature sensing probes, respectively; wherein the calculator device is configured to detect the type of resistive temperature device included in the temperature sensing probes and to adapt the measuring algorithm according to the type of resistive temperature device.

Abstract: A measuring arrangement for measuring a fill level in a bypass of a container with a measuring instrument, in particular a fill level or point level measuring instrument, wherein the bypass is connected to the container by means of at least two container connections, characterized by a monitoring device for monitoring a consistency of the container connections, which is coupled with the measuring instrument.

Abstract: Globally our environment comprises structures built to perform a meet different requirements including residential, commercial, retail, recreational and service infrastructure. Whilst, millions of tons of construction materials are deployed annually the quality control procedures in many instances have not changed to reflect today's demands. Accordingly, it would be beneficial to provide construction companies, engineering companies, infrastructure owners, regulators, etc. with means to automated testing/characterization of construction materials during at least one of its manufacture, deployment in construction and subsequent infrastructure life. It would be further beneficial for such automated methods to exploit self-contained data acquisition/logging modules allowing them to be employed with ease at the different points in the life cycle of a construction material and/or construction project.

Abstract: A method for removing a guided wave noise in a time-domain may include recording one or more acoustic signals with one or more receivers at a first location, wherein the one or more acoustic signals are raw data. The method may further include determining a slowness range, estimating a downward guided wave noise by stacking the one or more acoustic signals based at least in part on a positive slowness, estimating an upward guided wave noise by stacking the one or more acoustic signals based at least in part on a negative slowness, and identifying a dominant direction of propagation. The method may further include identifying a slowness from a highest stacked amplitude for the dominant direction of propagation, estimating a downward guided wave noise with the slowness, estimating an upward guided wave noise with the slowness, and subtracting the downward guided wave noise and the upward guided wave noise.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium for receiving an indication of damage to a building from a sensor network associated with the building, where the sensor network is responsive to damage to the building. Determining a location and an extent of the damage to the building based on the indication of damage. Automatically coordinating a repair for the damage in response to determining the location and the extent of the damage.

Abstract: A vibration distribution measurement system includes a frequency sweep light source that outputs frequency sweep light, an optical splitter that splits the frequency sweep light into probe light and local light, an optical mixer that mixes backscattered light from the sensing fiber as signal light with the local light, the backscattered light being obtained by causing the probe light to be incident on the sensing fiber, and an analysis unit that analyzes a beat signal obtained from output light of the optical mixer. The analysis unit estimates a distance offset from a measurement result obtained by measuring a distribution waveform of the signal light by measuring the beat signal at a measurement time sufficiently shorter than a cycle of the vibration of the sensing fiber, and measures a distribution of a vibration at any position by compensating for the distance offset.

Abstract: A system, apparatus, and method for estimating remaining useful life of a bearing are provided. The method includes receiving a request for analyzing a defect in the bearing from a source. The request includes operational data associated with the bearing. An impact of the defect on the bearing is monitored over a period of time. A time period during which the impact of the defect on the bearing is higher than a threshold range is determined using a machine learning model. A severity of the impact associated with the defect is computed during the time period. A remaining useful life of the bearing is determined based on the severity and the operational data during the time period.

Abstract: An analysis device includes a vibration sensor that detects vibration of a machine, a calculation unit that calculates an average value of detection data of the vibration sensor in each predetermined cycle interval, converts a plurality of data points included in each interval to one data point indicating the average value to reduce calculation points, and performs vibration analysis with the reduced calculation points, and a wireless communication device that transmits processed data output from the vibration analysis performed by the calculation unit.

Abstract: An apparatus and a corresponding method used, in the field of medical analysis, to determine erythrocyte sedimentation rate, as well as other connected parameters.

Abstract: An ultrasonic transverse wave is transmitted or ultrasonic longitudinal wave and transverse wave are transmitted in a perpendicular direction to a bonding interface between materials by transmission such as a probe. A reflection signal of the transmitted transverse wave reflected by the bonding interface and/or a transmission signal of the transmitted transverse wave transmitted through the bonding interface and the longitudinal wave, a reflection signal of the transmitted longitudinal wave reflected by the bonding interface and/or a transmission signal of the transmitted longitudinal wave transmitted through the bonding interface are received by reception such as the probe.

Abstract: A time point is acquired by steps including a data acquisition step of acquiring time-series data indicating a time change of a displacement of a structure based on a physical quantity generated at a predetermined observation point in the structure as a response caused by a movement of a formation moving object formed with one or more moving objects on the structure; a removing step of removing a vibration component included in the time-series data; and a time point acquisition step of acquiring an entry time point at which the formation moving object enters the structure and an exit time point at which the formation moving object exits from the structure, based on the time-series data after the vibration component is removed.

Abstract: A method for determining a remaining useful life of a bearing having a surface defect includes determining a defect size of the surface defect based on oscillations of the bearing. The method also includes determining, based on the defect size, at least one of the principal stresses or a contact force of the bearing caused by the surface defect. The method also includes determining the remaining useful life of the bearing based on at least one of the principal stresses and/or the contact force.

Abstract: A non-contact non-destructive inspection system according to an embodiment includes a sensor, a velocity detection unit, and a damage detection unit. The sensor detects a second elastic wave emitted to a medium surrounding an inspection object due to a first elastic wave propagating through the inspection object. The velocity detection unit detects a velocity of the first elastic wave based on a wavefront angle of the second elastic wave and a velocity of the second elastic wave. The damage detection unit detects damage to the inspection object based on the velocity of the first elastic wave.

Abstract: Evaluation arrangement for a thermal gas sensor with at least one heater and at least one detector. The evaluation arrangement is configured to obtain information about an amplitude of a detector signal of a first detector, and information about a first phase difference between a heater signal and the detector signal of the first detector. In addition, the evaluation arrangement is configured to form as an intermediate quantity, dependent on the information about the amplitudes of the detector signal and dependent on the information about the first phase difference, a combination signal, and to determine information about a gas concentration or information about a thermal diffusivity of a fluid on the basis of the combination signal.

Abstract: A structure displacement amount measurement apparatus includes: an acquiring unit configured to acquire a displacement amount caused on a structure by a weight of a vehicle traveling on the structure along a time series; an estimating unit configured to estimate a section in which displacement is caused based on time-series data of the displacement amount; a detecting unit configured to detect a feature value of change in displacement amount within the estimated section; a determining unit configured to determine whether or not the estimated section is a section of displacement due to a weight of a single vehicle based on the detected feature value; and an extracting unit configured to extract a displacement amount from the time-series data within a section of displacement due to a weight of a single vehicle based on a result of the determination.

Abstract: In an unmanned system for monitoring lateral deformation of a landslide based on inertial measurement, a deformable coupling pipeline is disposed in a landslide mass. An unmanned trajectory tracer is provided with a battery, a motor wheel, an inertial sensor, and a single chip microcomputer that are electrically connected. The single chip microcomputer controls the motor wheel to drive the unmanned trajectory tracer to move back and forth in the deformable coupling pipeline. The single chip microcomputer controls the inertial sensor to measure a shape of the deformable coupling pipeline. Two monitoring piers are disposed at two ends of the deformable coupling pipeline respectively. The monitoring pier is provided with a GPS device and a communication device, the communication device is in communication connection with the single chip microcomputer, and the single chip microcomputer obtains the shape of the deformable coupling pipeline and sends to the communication device.

Abstract: A tool recognition system may comprise a tool recognition assembly and a control system in communication with the tool recognition assembly. The control system may comprise a processor and a memory comprising machine-readable instructions. When executed by the processor, the instructions may cause the control system to receive a first baseline sensor value from the tool recognition assembly and determine a baseline adjustment threshold based on the first baseline sensor value. The instructions may also cause the control system to receive first monitored sensor data from the tool recognition assembly and compare the first monitored sensor data to the baseline adjustment threshold for a predetermined duration. If the comparison satisfies a comparison criterion, a second baseline sensor value may be established using the first monitored sensor data.

Abstract: Methods, systems, and devices for calibrating a barometer of a client device. A server computer accesses historical data including location data, and atmospheric pressure data collected from a plurality of client devices over a period of time. An equation system defined by the historical data is solved. The equation system has a plurality of unknown parameters, the plurality of unknown parameters comprising a barometer bias of a first client device among the plurality of client devices. The first client device is calibrated using the barometer bias.

Abstract: Methods and devices for diagnosing a robot. A method includes obtaining a spectrum of a motion signal generated by a rotating component of the robot during operation of the robot. A frequency amplitude of a sub-component of the rotating component is determined from the spectrum, based on a physical characteristic and a speed of the sub-component. A failure of the sub-component is detected by comparing the frequency amplitude with a threshold amplitude.