Abstract: A DTV pilot tone is detected in a noisy environment by computing a power average of Fast Fourier Transform (FFT) output spectra of a received signal, finding a power peak in the averaged outputs, computing an adjustment parameter to center the power peak in a Discrete Fourier Transform bin of the averaged output spectra, applying the adjustment parameter to adjust the received signal, computing a coherent average of FFT output spectra of the adjusted signal, and, testing a power spectrum of the coherent average for the presence of the DTV pilot tone.

Abstract: An energy usage data visualization process includes receiving an energy data presentation request from a user, processing the energy data presentation request by the customer portal service module, and retrieving energy usage data associated with the energy data presentation request. The energy usage data is retrieved from a storage device, which is communicatively coupled to the customer portal service module. The service module produces a visual output based upon the presentation request and the retrieved energy usage data. The service module produces the visual output for presentation onto the display of the end user interface, by using an energy data visualization template of a template module application. The template module application is determined by the energy data presentation request, and is stored on the customer portal service module. The customer portal service module has a housing that is separate from the housing of the end user device.

Abstract: Described is an apparatus and method for remotely controlling the call interval of an environmental instrument for a water quality monitoring apparatus based on environmental data obtained by one or more environmental instruments.

Abstract: A first third harmonic component removing portion calculates an approximate value (sin ?)n of a signal sin ? that is an output signal of a first magnetic sensor from which third harmonic components have been removed. A second third harmonic component removing portion calculates an approximate value (cos ?)n of a signal cos ? that is an output signal of a second magnetic sensor from which third harmonic components have been removed. A rotation angle calculation portion calculates a rotation angle ? of a rotor based on the approximate value (sin ?)n of sin ?, which has been calculated by the first third harmonic component removing portion and the approximate value (cos ?)n of cos ?, which has been calculated by the second third harmonic component removing portion.

Abstract: A method for taking field measurements of a cone type fluid flow meter including a meter body and a cone-type fluid displacement member to determine when to calibrate or replace the fluid flow meter. The method includes taking measurements of dimensions of the fluid displacement member and the meter body, evaluating the dimension measurements and ascertaining whether the dimension measurements are within designated dimension limits. The present method saves significant time and costs by taking measurements in the field determining whether to calibrate or replace the fluid flow meter.

Abstract: Methods and systems for predicting an end of life of a wind turbine component including receiving environmental conditions indicative of natural surroundings of wind turbines within a wind turbine farm, receiving component performance metrics indicative of an operation of wind turbines within a wind turbine farm, and distributing the wind turbines into peer-clusters such that the wind turbines within each of the peer-clusters have similar environmental conditions. The methods and systems further include identifying a low performing wind turbine and a remaining portion of wind turbines within one of the peer-clusters based upon a predicted performance model, processing the component performance metrics of the low performing wind turbine, identifying a critical component of the low performing wind turbine and predicting the end of life of the critical component of the low performing wind turbine.

Abstract: The measuring system has a measuring transducer which produces primary signals transmitter electronics for activating the measuring transducer and for evaluating primary signals. The measuring transducer includes at least one measuring tube; at least one electro-mechanical, oscillation exciter, a first oscillation sensor. The transmitter electronics, in turn, delivers at least one driver signal for the oscillation exciter for effecting vibrations of the at least one measuring tube and generates, by means of the first primary signal and by means of the second primary signal, as well as with application of a Reynolds number, measured value representing a Reynolds number, Re, for medium flowing in the measuring transducer, a pressure difference, measured value, which represents a pressure difference occurring between two predetermined reference points in the flowing medium.

Abstract: Method and system for measuring an angle between a first member and a second member under dynamic conditions is provided. A first and second acceleration sensor and an angle measuring device (goniometer) are connected to the first and second member. Under dynamic and static conditions, the angle (?) is measured by the goniometer. Under static conditions, the inclination angle of the first member is measured using the first acceleration sensor and the inclination angle of the second member using the second acceleration sensor and the angle (??) between the first and second members is calculated. Then the deviation is calculated between the angle (?) and the angle (??). An error correction factor is calculated from the deviation between both angles (?,??). The error correction factor is applied to future and/or previous measurements of the angle (?) between the first and second member done by the goniometer.

Abstract: A vibrator-coupled ground filter improves seismic data recorded during a seismic operation. This filter is based on a ground model that takes into consideration the vibrator system, the coupling system between the baseplate and captured ground, and the coupled ground system. Using acceleration data from the baseplate and the reaction mass, the ground model can be used to derive particular variables for the ground model to help characterize the system. Using the derived variables in a ground filter, the recorded seismic data can be corrected to remove errors in the trace data produced by typical assumptions.

Abstract: Calibration equipment for calibrating multiple test stations in a test system is provided. Each test station may include a test unit, a test fixture, and a radio-frequency (RF) cable that connects the test unit to the test fixture. A control test setup may be used to calibrate uplink and downlink characteristics associated with each test station (e.g., to determine path loss associated with the RF cable and test fixture and variations associated with the test unit). The control test setup may calibrate each test station at desired frequencies to generate a test station error (offset) table. The test unit of each test station may be individually configured based on the test station error table so that offset is minimized among the different stations and so that the test stations may reliably measure hundreds or thousands of wireless electronic devices during product testing.

Abstract: A waveform generator and a signal analyzer are respectively provided in electrical communication with an input transducer and an output transducer capable of conversion between electrical and acoustic signals, and in mechanical communication with a part. A processor coupled with the waveform generator and signal analyzer receives a set of parameters defining a frequency scan from which it determines a number of frequency sweeps to be performed by the waveform generator. Each of the frequency sweeps has a number of frequencies less than a maximum capacity of the waveform generator, and for each frequency sweep, the processor instructs the waveform generator to excite the input transducer and synchronously receiving a response signal with the signal analyzer at multiple frequencies.

Abstract: A method for compensating for environment induced variations in structural health monitoring data is described. The method includes imparting a vibration onto a structure first location, the structure at a first temperature, receiving a comparison signal resulting from the vibration at a second location, accessing data representing a reference signal previously received at the second location, based on vibration at the first location, the reference signal received when the structure was at a second temperature, dividing the signals across multiple time windows, performing a cross correlation between the signals in each window to maximally correlate the signals within each window, performing a weighted regression on time to estimate time shift, the weights based on reference signal energy in each window, to determine a relationship between time and time shift, and using the relationship between time and time shift of the comparison signal to reduce the effects of environment on the comparison signal.

Abstract: A driving circuit of a test access port is disclosed. The driving circuit includes an input terminal for receiving a first test data signal when the driving circuit is operating in an external test mode. The driving circuit is configured to receive a second test data signal (BS) carrying a test command to be executed on the test access port when the driving circuit is operating in an internal test mode. The driving circuit comprises a control logic circuit configured for processing the test command and generating therefrom an internal test data signal carrying the processed test command when the driving circuit is operating in the internal test mode. The driving circuit includes a selector configured for generating a selected test data signal, the selected test data signal being selected from the first test data signal when the driving circuit is operating in the external test mode.

Abstract: A method and apparatus for operating a pumping system includes the following: determining a motor operating parameter of a motor configured to drive a pump in a well; determining a pump operating parameter of the pump based on the motor operating parameter; operating the pump in a first mode to determine pump characteristics at a desired fluid level; generating first mode output data based on operation of the pump in the first mode; operating the pump in a second mode based on the first mode output data; determining an estimated fluid level in the well based on the motor operating parameter, the pump operating parameter and the first mode output data; and adjusting the pump speed based on the estimated fluid level in order to maintain a desired fluid level.

Abstract: A method of detecting one or more blocked sampling holes in a pipe of an aspirated smoke detector system. The method includes ascertaining the base flow of fluid through a particle detector using a flow sensor; monitoring subsequent flow through the particle detector; comparing the subsequent flow with the base flow; and indicating a fault if the difference between the base flow and the subsequent flow exceeds a predetermined threshold.

Abstract: Systems, methods, and computer-readable media for detecting signals are provided. A method comprises determining a time-frequency representation for a received signal and partitioning the time-frequency representation of the received signal into a plurality of time-frequency partitions. The method further comprises determining an energy (e.g., a spectral energy) for each of the plurality of time-frequency partitions and detecting one or more signals within the received signal based on the energy (e.g., the mean spectral energy distribution) of the time-frequency partitions. In some embodiments, multiple signals received simultaneously within an input signal may be detected in unknown noise conditions.

Abstract: Disclosed are virtual reality systems, in particular immersive virtual reality systems, their parts, construction and use. The systems and/or parts thereof may be used by adults or children, and may be adapted to support, often within a single device, a large range of users of different sizes and medical condition. Users with physical disabilities have difficulties using existing immersive technologies such as those using accessories like head-mounted displays and data gloves. Such users are provided with immersive virtual reality outputs that allow them to see virtual representations of their body parts which appear in a correct spatial position relative to the users' viewpoint.

Abstract: An apparatus for determining the concentration of a conductive fluid present in a fluid filled bore hole is described. Such apparatus are known as water hold-up meters and are frequently used in oil, gas and water filled bore holes. In bore hole applications, data bandwidth between a down hole device and the surface can be limited, while determining water hold-up based on down hole measurements can be data intensive. A technique is proposed for calculating the water hold up that requires less data to be transmitted between the down hole device and the surface.

Abstract: A method is provided herein for determining a remaining useful life of an air filter. The method includes, but is not limited to, measuring a first airflow rate and a first air pressure (P1) in an air cleaner assembly downstream of the air filter, wherein P1 corresponds to the first airflow rate. The method further includes measuring a second airflow rate and a second air pressure (P2) in the air cleaner assembly downstream of the air filter, wherein P2 corresponds to the second airflow rate. The method further includes obtaining pressure differentials A1, A2, B1, and B2 from a data storage device. The method also includes calculating with a processor a result indicative of a useful life remaining for the air filter by taking into account P1, P2, A1, A2, B1, and B2. The method also includes reporting the result to a user.

Abstract: A monitor (5) monitors an assembled battery (1) having a plurality of cells (11) and a power supply line (2) for connecting the plurality of the cells (11). The monitor (5) includes: a detecting portion (6) for detecting a voltage of each of the cells (11) of the plurality of the cells (11); and a controlling portion (7) for receiving a voltage detection result detected by the detecting portion (6). The detecting portion (6) converts the voltage detection result into an alternating current communication signal and transmits the alternating current communication signal via the power supply line (2) to the controlling portion (7).