Abstract: Disclosed embodiments include systems and methods for estimating real-time bit forces experienced on a drill bit and decoupling bit force disturbances. Real-time bit forces can be estimated based on bit force observers using measurements from downhole sensor subs. Model-based observers that adopted to estimate the bit force from downhole sensor sub measurements. Strain and torque measurements as measured by the sensor subs are used to estimate bit force and bit torque. These measurements can be observed using an effective observer design with the estimated bit force and bit torque based on sensor sub measurements to track the real bit force and bit torque. Observations of estimated bit forces and identified bit force disturbances can be used perform drilling dynamics modeling and identify the occurrence of negative drilling events.

Abstract: Method and apparatus relating to ultrasound flow probes Measurement of time of flight of ultrasound pulses comprises: transmitting the pulses across a fluid flow; detecting a waveform (200) of the pulses, generating a cross-correlation between the waveform (200) and a tone (210) and identifying a plurality of peaks (220) in the cross-correlation; fitting a curve template (310) to the waveform at locations (300) corresponding to the peaks (220) and identifying the location (330) of the minimum error; performing a further cross-correlation (420) between the waveform (200) and the tone (210) over only a portion of the waveform (200) containing the minimum error location (330); and determining the temporal location corresponding to the maximum (430) of the further cross-correlation (430).

Abstract: A method comprising decomposing mass spectrometry data, especially of ion species that undergo multiple direction changes in a periodic manner, the data comprising signal and noise measured over time, into a sum of K harmonic component signals and a noise component, wherein the harmonic component signals and their number K are derived from the data and a determined quantity representative of the noise. The harmonic component signals and their number K may be determined iteratively on the basis of: using an initial value of K to calculate a minimised non-negative measure of difference R(K) between the measured and model data comprising data sets of K-harmonic component signals, and if R(K) does not lie within a noise range based on the quantity representative of the noise, changing the value of K and recalculating R(K) until R(K) lies within the noise range. Mass spectral information may be derived from the model data set.

Abstract: It is provided a computer-implemented method for performing body posture tracking, comprising the steps of collecting (S10) depth measurements of a body with at least one depth sensor; collecting (S20) inertial measurements with at least one inertial sensor attached to the body; and determining (S30) at least one posture of the body as a function of the depth measurements and the inertial measurements. Such a method improves the field of body posture tracking.

Abstract: An energy management system receives voltage and current data from each of a plurality of fault indicators. Each fault indicator is positioned on a powerline of a power distribution system immediately upstream of a respective one of a plurality of disconnect switches. The energy management system also determines a status of each disconnect switch based on the voltage and current from the plurality of fault indicators.

Abstract: A system and method for selecting a test vector for use in classification of electronic components. The system and method can quickly and automatically select a test vector that, when applied to a set of training electronic components, causes the electronic components to produce side channel information that can be used to build a classifier that accurately classifies a set of test electronic components.

Abstract: A failure diagnosis device applicable to a mechanical device provided with a motor as a source to drive a motion axis, and configured to acquire a moving position of the motion axis and a disturbance torque value applied to the motion axis every predetermined period, and to diagnose that a failure is occurring when the disturbance torque value is larger than a failure determination threshold, includes a disturbance torque selector configured to calculate a change from a reference value of each of the acquired disturbance torque values, and to accumulate the disturbance torque values except each disturbance torque value having the change from the reference value equal to or larger than a predetermined threshold, and a failure diagnosis unit configured to diagnose a failure of the mechanical device by using the disturbance torque values accumulated by the disturbance torque selector.

Abstract: The present invention related to an apparatus and method for master slave interferometry, referred to as Complex Master Slave (CMS). The method and apparatus can be used to provide complex-valued measurements of a signal reflected from an axial position inside an object or of signals reflected from points at several axial positions inside an object.

Abstract: A method of estimating the MFB50 combustion index of the cylinders of an internal combustion engine provided with a drive shaft coupled to at least a pair of position sensors, each of which is arranged at a respective end of the drive shaft; the estimation method comprising the steps of: acquiring the signals coming from two position sensors; determining the angular torsion of the drive shaft based on the signals from the two position sensors; and estimating the MFB50 combustion index of the single cylinders of the internal combustion engine based on the angular torsion of the drive shaft.

Abstract: A method includes detecting, with a passive infrared sensor (PIR), a level of infrared radiation in a field of view (FOV) of the PIR, generating a signal based on detected levels over a period of time, the signal having values that exhibit a change in the detected levels, extracting a local feature from a sample of the signal, wherein the local feature indicates a probability that a human in the FOV caused the change in the detected levels, extracting a global feature from the sample of the signal, wherein the global feature indicates a probability that an environmental radiation source caused the change in the detected levels, determining a score based on the local feature and the global feature, and determining that a human motion has been detected in the FOV based on the score.

Abstract: Four or more seismic attributes are integrated or merged into imaging formats and displayed for geological interpretation via extended quantization. Multi-attribute integration and classification improves the ability to identify geologic facies, and reservoir properties such as thickness, fluid type, or fracture intensity and orientation. The extended quantization groups up to eight attributes as a single attribute for geophysical data classification. Data group reduction criteria are provided to reveal common geological targets in the data, while preserving small variations or thin layers often found in hydrocarbon reservoirs. By combining multiple attributes, image quality is enhanced while providing analysts the ability to observe channels that might not be visible in any single attribute.

Abstract: A method, computer program product and system where a processor(s) configures sensor(s) on an unmanned aircraft system, to capture data related to a surface of a defined geographic area. The processor(s) navigate the unmanned aircraft system in a repeatable defined travel path proximate to the defined geographic area, such that the sensor(s) capture surface data related to the defined geographic area during the navigating, wherein a position of the unmanned aircraft system in the travel path is within a satellite view geometry of a satellite. The processor(s) maintain the unmanned aircraft system at a distance from the surface at which atmosphere does not obscure the data and obtain the data collected by the sensor(s). The processor(s) compares the data collected by the sensor(s) to data collected by one or more instruments on the satellite related to the defined geographic area to determine is the instrument(s) of the satellite are calibrated.

Abstract: A count processor counts a zero crossing detection count C. A fraction processor for calculating a fraction Fj (j=1 to L) of the zero crossing detection count on the basis of the digital signal at sampling timings immediately before a zero crossing specifying and when the zero crossing specifying, and computing a fraction processing parameter Gj=Nj?Fj using a zero crossing detection number Nj(0?Nj?N?1) in a period corresponding to a sampling count N necessary for averaging determined in advance. The averaging is performed according to the following formula, where C is the output of the count processor at the end of an averaging period and Gj (j=1 to L) is L fraction processing parameters (L indicates the number of Gj included between the averaging counts N) computed by the fraction processor, and the phase of the digital signal is computed, whereby the phase is calculated on the basis of an input signal digital value obtained by an AD converter.

Abstract: The present disclosure relates to a system and program for predicting shearing by fluid pressure, the system and program capable of predicting shearing information such as the minimum pressure Pcm required for hydraulic shearing, the sufficient pressure Pco for hydraulic shearing, and the optimal shearing direction using input information including the vertical stress ?v, the maximum horizontal stress and the minimum horizontal stress of a rock to which fluid is to be injected, a joint friction angle ?, a reservoir rock density ?r, an injected fluid density, and a coefficient of the sufficient pressure for hydraulic shearing ?.

Abstract: In one embodiment, a method of tracking multiple objects with a probabilistic hypothesis density filter is provided. The method includes providing a plurality of intensities. The plurality of intensities are pruned based on their respective weight to remove lower weighted intensities and produce a first set of intensities. Intensities in the first set of intensities that are identified as corresponding to the same object are then merged to produce a second set of intensities. The second set of intensities is then pruned again to produce a final set of intensities, wherein pruning the second set of intensities includes in the final set of intensities, up to a threshold number of intensities having the largest weights in the second set of intensities and excludes from the final set of intensities any remaining intensities in the second set of intensities.

Abstract: A system for determining scattering parameters of a frequency-converting device under test using a network analyzer determines the system errors which occur between the individual ports (1, 2) of the frequency-converting device under test (3) and the ports (4, 5) of the network analyzer (6) connected to the ports (1, 2) of the frequency-converting device under test (3) and measures the system-error-containing signals incoming and outgoing in each case at the individual ports (1, 2) of the frequency-converting device under test (3).

Abstract: A measurement transducer, comprising: a sensor module having a sensor element, sensor electronics and a main electronics module. The sensor element emits sensor signals, and the sensor electronics processes the digitized sensor signals with a transmission function and provides processed sensor measurement values on a digital interface. The main electronics module is functionally connected to the sensor electronics and a logic unit, and a communications interface. The logic unit is configured to receive the sensor measurement values provided on the digital interface and to cause the output of a measurement signal corresponding to the sensor measurement values through the communications interface. The logic unit is configured to carry out a monitoring function. The monitoring comprises, in addition to a currently provided sensor measurement value, the reception of the associated digitized sensor signals, with the aid of a test function which comprises the transmission function.

Abstract: A method for identifying a system anomaly in a power distribution system is described herein. The system anomaly may indicate a non-technical loss or a topology error, including schematic entry errors and component modelling errors in the power distribution system. The method includes a) selecting a common coupling point in the power distribution system, wherein downstream branches are connected to the common coupling point; b) determining voltage estimates of the common coupling point according to electrical measurements from the downstream branches; and c) identifying the system anomaly by determining whether a detection criterion is satisfied using the voltage estimates.

Abstract: A method for correction of a sea surface state can include receiving geophysical data from a seismic survey, wherein the seismic survey utilizes a plurality of receivers disposed in a body of water and at least one source in the body of water, actuated at a plurality of shot points. The method can include identifying, in the geophysical data, a wavefield based on the actuation of the at least one source, and determining, based on the identified wavefield, a sea surface state at the at least one source at one of the plurality of shot points.

Abstract: A resistivity profile can be generated directly from measured electromagnetic field data from a marine survey. A series of transformations can be applied to remove a conductivity dependency from a boundary value problem such that an inversion method may no longer be required to generate the resistivity profile.