Abstract: Method for diagnosing a pneumatic control valve by using a positioner model includes: establishing relational expression for outputting valve stem displacement according to control pressure, the relational expression including parameters for the characteristics of a positioner, an actuator, and a valve, determining initial parameter value by adjusting the values of the parameters until the difference between a measured value for a normal operation of the pneumatic control valve and output value obtained by the relational expression is smaller than predetermined error limit, determining diagnostic parameter value by adjusting the values of the parameters until the difference between a measured value for a diagnostic operation of the pneumatic control valve and an output value obtained by the relational expression is smaller than a predetermined error limit, and comparing the initial parameter value and the diagnostic parameter value so as to determine whether the pneumatic control valve has abnormality.

Abstract: A method for determining the rotational rate of a movable member using an array of inertial sensors is provided. The method includes defining a hidden Markov model (“HMM”). The HMM represents a discrete value measurement of the rotational rate of the movable member. A transition probability of the HMM accounts for a motion model (linear or non-linear) of the movable member. An observation probability of the HMM accounts for noise and bias of at least one of the inertial sensors of the array of inertial sensors. A processor receives input from the array of inertial sensors. The processor determines the rotational rate of the movable member by solving for an output of the HMM using the input received from the array of inertial sensors. The processor may use a forward algorithm, a forward-backward algorithm, or a Viterbi algorithm to solve the HMM.

Abstract: Methods, systems, and computer programs encoded on computer storage medium, for identifying, for a power source, a lookup table (LUT) that includes, for each condition of the power source, i) a maximum power (p-max) of the power source for the condition and ii) a sustained power (p-sus) of the power source for the condition; examining the LUT to define calibration triggers associated with the conditions; identifying an event that satisfies a particular calibration trigger of the calibration triggers; in response to identifying the event, creating a workload for the power source; in response to the workload, determining for a particular condition associated with the particular calibration trigger, an updated p-max value for the particular condition and an updated p-sus value of the power source for the particular condition; and updating the LUT, for the particular condition, based on the updated p-max value and the updated p-sus value.

Abstract: Provided are an electronic device, a signal processing method thereof, a biological signal measurement system, and a non-transitory computer readable recording medium. The electronic device, according to one embodiment of the present disclosure, comprises: a sensor for measuring a biological signal of a user; and a processor for determining the periodicity of the measured biological signal, and selectively compressing the measured biological signal according to the determined periodicity.

Abstract: The present invention provides an experimental platform for simulating a coal rock disaster of a coal mine extraction, including a base device, a coal simulation device, an immediate roof simulation device, a hydraulic support and a removable impact device. The coal simulation device is fixedly disposed on the base device; the hydraulic support is fixed on the base device and is located at one side of the coal simulation device; the immediate roof simulation device is disposed above the coal simulation device and the hydraulic support; the removable impact device is disposed above the immediate roof simulation device; the immediate roof simulation device is a rectangular frame; the rectangular frame is configured to pave a bulk simulation material and an immediate roof simulation material sequentially from the bottom up; and the removable impact device can impact the immediate roof simulation material and the bulk simulation material.

Abstract: In an FPGA, waveform data to be sent from the FPGA to a DAC is stored, and a logical circuit is configured from a detection circuit for extracting test force value and elongation value signal components from a signal input from an ADC, an offset subtractor, and a gain multiplier. The detection circuit extracts a resistance component proportional to the test force and displacement. In the detection circuit, an expression that includes a harmonic component of an odd multiple of the carrier frequency is used as a correlation function for extracting the resistance component. As a result, it is possible to obtain calculation results at a sampling frequency that is higher than the carrier frequency.

Abstract: The present invention discloses a method and system for detecting the fastening state of a fastening structure which fixes structural elements. At least a first vibration sensor is mounted on a first structural element for collecting vibration data of the first structural element. At least a second vibration sensor is mounted on a second structural element or on the fastening structure for collecting vibration data of the second structural element or the fastening structure. The fastening state of the fastening structure is determined using the vibration data collected. The method and system enable detection of the fastening state of a fastening structure with low-power consumption and low cost.

Abstract: A method for creating a measurement protocol in a computer, such as the measurement computer of a coordinate-measuring machine or a computer remote therefrom, includes: providing data necessary for creating a measurement protocol generated on the basis of a measurement sequence by the coordinate-measuring machine; providing specification data specifying predefined conditions under which a measurement sequence should be performed and/or specifying predefined conditions under which examination features should be evaluated; checking the data necessary for creating a measurement protocol as to whether the predefined conditions under which the entire measurement sequence should be performed were met and/or as to whether the predefined conditions under which individual examination features to be examined should be evaluated were met; and, creating a measurement protocol in the form of an electronic document, in which compliance and/or non-compliance with the conditions in accordance with the specification data is d

Abstract: A method for offset calibration of a rotation rate sensor signal of a rotation rate sensor. In a first step, an ascertainment is made that the rotation rate sensor is in an idle state. In a second step, after the first step, a filter parameter is determined as a function of the measured rotation rate sensor values, measured in the idle state, of the rotation rate sensor. In a third step, after the second step, a filtered measured rotation rate sensor value is determined with the aid of the filter parameter. An offset is determined with the aid of the filtered measured rotation rate sensor value.

Abstract: A method for taking measurements in a wellbore including lowering a downhole logging tool in the wellbore; obtaining, via the logging tool, a plurality measurements of a downhole element; processing the plurality of measurements to obtain a plurality of processed measurements; calculating a contour model based on the plurality of processed measurements; and determining a parameter of the downhole element based on the contour model.

Abstract: Methods and related systems are disclosed for determining a temperature of an indoor space with a plurality of onboard sensors of a device of a climate control system. In an embodiment, the method includes detecting raw temperatures with the plurality of sensors. In addition, the method includes determining a combined temperature offset for a first sensor of the plurality of sensors based on outputs of a plurality of models. The plurality of models are to determine a plurality of temperature offsets for the first sensor based on different airflow directions relative to the device. Further, the method includes adjusting the raw temperature detected by the first sensor with the combined temperature offset.

Abstract: Various embodiments may include a measuring device for three-dimensionally sensing elongate cut-outs comprising: an assembly for positioning and fixing on an elongate cut-out of a body; and a 3-D measuring head connectable to the assembly to be aligned with the elongate cut-out for the respective 3-D surface measurement of the elongate cut-out.

Abstract: A method is used for determining a status of an encapsulation and/or a passivation layer of the encapsulation. The encapsulation forms a multi-layer system from multiple passivation layers arranged on top of one another and electrically contacted intermediate layers arranged between the passivation layers. The multi-layer system protects an implant surrounded by the encapsulation. In the method, an electrical measurement is carried out between a reference potential and at least one electrically contacted intermediate layer, and at least one current flowing between the reference potential and the at least one electrically contacted intermediate layer is detected. The at least one detected current is compared with at least one pre-determined threshold value. If the detected current falls below or exceeds the at least one threshold value, this indicates a functional state of a passivation layer adjacent to the at least one electrically contacted intermediate layer.

Abstract: A measurement system and method, which increases a degree of freedom for setting a measurement period and a transmission period of measurement values and has a high accuracy, are provided. The measurement system includes a control device and a measurement device that measures a measurement object in a first period and transmits measurement values obtained from the measurement device to the control device. The measurement device transmits the measurement values waiting to be transmitted and additional information including information of the number of the measurement values waiting to be transmitted to the control device using frames transmitted in a second period that is longer than the first period. The control device generates time series data in which the measurement values are arranged in time series using the additional information.

Abstract: Disclosed is a fault signal recovery system including a data processor configured to generate a signal subset U* by removing, from a signal set U for a plurality of tags, some tags including a fault signal, and a first learning signal subset X* by removing tags disposed at positions corresponding to the some tags from a learning signal set X containing only tags of normal signals, a modeling unit configured to generate feature information F extractable from the first learning signal subset X* and recovery information P on a plurality of recovery models usable for restoring the fault signal, and a recovery unit configured to select an optimum recovery model by matching the feature of the learning signal set X with the recovery models generated through the recovery in formation P to estimate and recover normal signals for the some tags.

Abstract: A machine learning method and system for predictive maintenance of a dryer. The method includes obtaining over a communication network, an information associated with the dryer and receiving measurements of a vibration level of one of a process blower, a cassette motor and a regeneration blower associated with the dryer. Further, an anomaly is determined based on at least one of a back pressure and a fault and balance of at least one of the process blower and the regeneration blower is tracked. An alarm for maintenance is raised when one of an anomaly and an off-balance is detected.

Abstract: A wind flow sensing system for determining wind flow at a set of different altitudes above a terrain is provided, The wind flow sensing system comprises an input interface configured to receive a set of measurements of radial velocities at line-of-site points above the terrain for each of the altitudes, and a processor configured to estimate velocity fields for each of the altitudes based on data assimilation of the velocity fields above an approximation of the shape of the terrain with a set of one or multiple convex shapes to fit the measurements of radial velocities and estimate horizontal velocities at each of the altitudes as a horizontal projection of the corresponding radial velocities corrected with corresponding horizontal derivatives of vertical velocities of the estimated velocity fields. The wind flow sensing system further comprises an output interface configured to render the estimated horizontal velocities at each of the altitudes.

Abstract: The method for monitoring the condition of the hydraulic system for predicting the risk of failure is designed for hydraulic systems, whose components include at least one pump (1) for transporting fluid through the distribution system of the hydraulic system. The hydraulic system simultaneously detects at least one current magnitude of pressure and the current value of speed of the pump (1), whereupon the current speed value is compared with the trend speed value obtained from the statistically processed archived data of speed from the previous operation of the pump (1) and/or with the reference speed value of the pump (1), whereupon the comparison result provides the condition and risk of failure of the hydraulic system.

Abstract: Disclosed are a method and system of magnetotelluric synchronous detection and real-time inversion. The system includes a detection and inversion host (M) with wireless networking function and N2-1 detection and inversion extensions (Si) with wireless communication functions. The distance between each two detection and inversion extensions (Si) is D, i=1, 2, . . . , N2-1, and N is an odd number. The detection and inversion host is configured for collecting magnetic field signals and electric field signals at measurement points, wireless networking and cooperation, synchronous detection and real-time inversion control of the detection and inversion extensions (Si) in detection area. The detection and inversion extensions (Si) are configured for synchronous collection of electric field signals at measurement points and real-time inversion of detection data at measurement points under cooperative control of the detection and inversion host.

Abstract: One object is to acquire from a paper sheet circulating in the market data for updating the data for recognition. A paper sheet handling apparatus used for recognizing a paper sheet and the like includes a recognition unit that recognizes a paper sheet, an operation unit for instructing execution of a data collection processing, and a control unit that controls, in the data collection processing that is executed after an instruction operation is performed by using the operation unit, data from a paper sheet that is not correctly recognized by the recognition unit, and a memory that stores therein the data collected by the control unit.