Abstract: An analog circuit fault diagnosis method using a single testable node comprises the following steps: (1) obtaining prior sample data vectors under each fault mode; (2) computing a statistical average of the prior sample data vectors under each of the fault modes; (3) decomposing a signal by an orthogonal Haar wavelet filter set; (4) extracting the feature factor of the prior sample fault modes; (5) extracting a fault-mode-to-be-tested feature factor; (6) computing a correlation coefficient matrix and correlation metric parameters between the feature factor of the prior sample fault modes and the feature factor of the fault-mode-to-be-tested; and (7) determining a fault mode according to a maximal correlation principle by comparing the correlation metric parameters.

Abstract: A method for improved data-driven estimation of a stimulated reservoir volume may generate an optimized surface that encloses a set of data points including microseismic event data corresponding to a treatment of a subterranean formation. A Delaunay triangulation may be performed on the set of data points to generate a set of polytopes. A Voronoi polygon may be generated about each data point and used to obtain a local density measure that is locally and adaptively determined for each data point. Based on the local density measure, polytopes in the set of polytopes may be discriminated for inclusion in the optimized surface.

Abstract: A computer-implemented method enables determining an input power load for a multi voltage rail subsystem in an electronic device such as an information handing system. The method comprises determining a first output power value from a first voltage regulator and a second output power value from a second voltage regulator. A first input power value to the first voltage regulator is determined based at least partially on the first output power value and a second input power value to the second voltage regulator is determined based at least partially on the second output power value. An offset power value is calculated based on the first input power value and the second input power value. A total input power value is calculated based on the offset power value and a third input power value. The total input power value is transmitted to a processor.

Abstract: A distance determination system is disclosed. In various embodiments, the system includes a transmitter configured to transmit a first pulse at a first frequency and a second pulse at a second frequency; a receiver configured to receive audio signals; and a processor coupled to the receiver and configured to detect whether an intermodulation product of the first pulse and the second pulse is present and above a threshold amplitude in an audio signal received by the receiver; and determine, based at least in part on whether the intermodulation product of the first pulse and the second pulse is detected to be present and above a threshold amplitude, whether a distance to a surface is greater than a distance corresponding to the first pulse and the second pulse.

Abstract: A system and method for the synchronization of a central controller wirelessly for determining values of electrical parameters. The method includes sampling an electrical signal via at least one self-powered power sensor (SPPS); estimating, via the at least one SPPS, a time-stamp based on the sampled electrical signal; estimating, via the at least one SPPS, at least a first electrical parameter; generating a preamble of a packet; generating a synchronization information for a synchronization field of the packet; transmitting the packet components wirelessly; determining a time offset value for the packet based on the time-stamp and the transmission time-stamp of the synchronization information; and transmitting the time offset value by appending the time offset value to the packet, wherein the time offset value is used for determining at least a second electrical parameter.

Abstract: An ice-skating measuring apparatus includes an ice-skate blade holder and an ice-skate blade. The blade holder has a front beam column and a rear beam column. The blade includes at least one sensor configured to measure forces acting on the blade, and the blade is detachable from the blade holder.

Abstract: A mirror assembly mountable to a wall includes a mirror platform having a front surface and a rear surface, a chassis engageable with the mirror platform to define a mirror assembly interior, at least one electrical component disposed within the mirror assembly interior, and a mounting structure. The mounting structure includes a support member mounted to one of the rear surface of the mirror platform and the chassis and a hanger member mounted to the other of the rear surface of the mirror platform and the chassis. The hanger member is removably securable on the support member to mount the mirror platform to the chassis.

Abstract: Methods and devices for determining at least one parameter of a model of a technical installation are provided. In this case, the parameters are updated on the basis of measurements as a function of an observation matrix. The observation matrix is prescribed as a function of the model and being able, if appropriate, to depend on a time variable which can be measured.

Abstract: A system for inspecting or screening electrically powered device includes a signal generator inputting a preselected signal into the electrically powered device. There is also an antenna array positioned at a pre-determined distance above the electrically powered device. Apparatus collects RF energy emitted by the electrically powered device in response to input of said preselected signal. The signature of the collected RF energy is compared with an RF energy signature of a genuine part. The comparison determines one of a genuine or a counterfeit condition of the electrically powered device.

Abstract: A monitoring system for a combine harvester having a header with a header width for harvesting a crop. The monitoring system includes a plurality of sensors, configured to provide a plurality of measurement waves to a discharge area for crop residue, and receive a plurality of response waves reflected from the discharge area. The system further includes a processing unit comprising an input terminal configured to receive a response signal of the plurality of sensors, the response signal representative of the plurality of response waves reflected from the discharge area. The processing unit is configured to process the response signal and determine, based on the response signal, a distribution of the crop residue over the discharge area. The processing unit further comprises an output terminal configured to output a distribution signal representative of the distribution of the crop residue over the discharge area.

Abstract: [Object] To detect states of a plurality of secondary batteries whose kinds are different with high accuracy.

Abstract: The system generally includes a crosspoint switch in the local data collection system having multiple inputs and multiple outputs including a first input connected to the first sensor and a second input connected to the second sensor. The multiple outputs include a first and second output configured to be switchable between a condition in which the first output is configured to switch between delivery of the first sensor signal and the second sensor signal and a condition in which there is simultaneous delivery of the first sensor signal from the first output and the second sensor signal from the second output. Multiple inputs of the crosspoint switch include a third input connected to the second sensor and a fourth input connected to the second sensor. wherein the local data collection system is configured to record gap-free digital waveform data simultaneously from at least the first input, the second input, the third input, and the fourth input.

Abstract: The system generally includes a crosspoint switch in the local data collection system having multiple inputs and multiple outputs including a first input connected to the first sensor and a second input connected to the second sensor. The multiple outputs include a first and second output configured to be switchable between a condition in which the first output is configured to switch between delivery of the first sensor signal and the second sensor signal and a condition in which there is simultaneous delivery of the first sensor signal from the first output and the second sensor signal from the second output. Multiple inputs of the crosspoint switch include a third input connected to the second sensor and a fourth input connected to the second sensor. The platform is configured to determine a change in relative phase based on the simultaneously recorded gap-free digital waveform data.

Abstract: The subject matter of this specification can be embodied in, among other things, a method for characterizing a fluid injector that includes receiving a collection of waveform data, identifying a pull locus, determining a detection threshold level value, identifying a first subset of the collection of data representative of a selected first electrical waveform of the collection of electrical waveforms, identifying an opening value, identifying a representative closing value, identifying an anchor value, identifying a second subset of the collection of data based on the collection of data, the pull locus, the first subset, and the opening value, identifying a maximum electrical value, identifying an opening locus based the collection of data, the anchor value, and the maximum electrical value, identifying a hold value, and providing characteristics associated with the fluid injector comprising the pull locus, the opening locus, the hold value, the anchor value, and the representative closing value.

Abstract: A distributed renewable energy system includes a renewable energy generating module having an array of renewable energy generators connected to a population of distributed power inverters. The distributed renewable energy system also includes a distributed energy metering module having a data aggregating unit that receives output energy data from the population of distributed power inverters and a data processing unit that calculates a revenue grade output energy from the output energy data based on a tolerance probability characteristic of the output energy data. The distributed renewable energy system additionally includes a distributed energy reporting module that reports the revenue grade output energy. A method of measuring distributed renewable energy is also provided.

Abstract: The invention relates to a method for estimating pore pressure in subterranean shale formations such as gas- or organic-rich shale where pore pressure predictions based on either a resistivity log or a porosity-indicative log such as sonic tend to be inaccurate. The method involves combining the resistivity log with the porosity-indicative log using a Eaton formula to give an estimate of pore pressure which is accurate both for conventional water wet shale and for organic-rich shale.

Abstract: A lubrication detection method includes a first step is a lubricator provides an information to a processor, a second step is to detect temperature information within a predetermined time period and then to create a temperature curve and then to determine whether or not the recess in the temperature curve faces upward, and a third step of detecting a start point temperature value to form Value A, and averaging temperature values within ? time period in front of the lowest point to form Value B, and average temperature values after ? time period in back of the lowest point to form Value C, and determining whether or not Value B is smaller than Value A, and then determining whether or not Value B is smaller than Value C, and then generating an information of “Normal” indicative of normal lubrication.

Abstract: A method for characterizing fractures traversing a wellbore includes input to a computer multiaxial electromagnetic induction measurements corresponding to measurements made along two mutually orthogonal magnetic dipole moment axes perpendicular to an axis of the wellbore. The measurements correspond to at least one receiver spacing from a transmitter. The measurements represent induced voltage in a receiver having a same dipole moment direction as a dipole moment direction of a transmitter. A first derivative with respect to wellbore depth of the multiaxial electromagnetic induction measurements is calculated. At least one peak and an amplitude thereof of the first derivatives is calculated. The peak and the amplitude are used to determine a location and an aperture of at least one fracture traversing the wellbore.

Abstract: A probe displacement command in a scanning measurement is generated according to a composite speed vector V: V=Gf·Vf+Ge·Ve+sp(p)·Gc·Vc2 wherein Vf is a vector along which a probe is displaced along a scanning path, Ve is a vector maintaining a deflection amount of the probe toward a work piece at a standard deflection amount. Vc2 is represented by (Vc1·q)q, Vc1 is a vector in a direction correcting a probe position such that a stylus tip is oriented along a scanning course, q is a vector given by a vector product of the normal line of a surface of the work piece and Vf, The normal direction of a measured surface is designated as Nw, p is a scalar product of Vc2 and Nw, and sg(p) is a function returning +1 or ?1 in accordance with a value of p.

Abstract: An engine control unit includes an extracting portion acquiring a sound or vibration of an engine from external and extracting vibration components of frequency bands each of which including a resonant frequency of a vibration mode, a waveform synthesis portion synthesizing the vibration components extracted by the extracting portion to generate a synthesis vibration waveform, a calculation portion calculating a time average value by averaging the synthesis vibration waveform in a predetermined time, a peak detection portion detecting a peak strength of the vibration component of the frequency band including a lowest resonant frequency, a storage portion previously storing a first threshold and a second threshold, and a determination portion determining an existence of a knocking and whether a knock level is a first knock level or a second knock level, by comparing the time average value with the first threshold and comparing the peak strength with the second threshold.