Abstract: A system determines the frequency of grid signals corresponding to an electrical grid in real time. The system includes a transient detector that monitors a grid signal from a voltage meter or a current meter connected to the electrical grid. The system produces, in real time and at a sampling rate, a deviation signal indicative of a periodicity of the monitored grid signal. The system determines, over one or more cycles of the monitored grid signal, a measurement signal corresponding to the deviation signal. The system determines a frequency signal that corresponds a frequency estimation of the monitored signal by applying a frequency estimation when values of the measurement signal are less than a deviation threshold and maintaining the frequency signal at a constant value when values of the measured signal equal or exceeds the deviation threshold.

Abstract: A system and methods for monitoring an impact of geomagnetic disturbances (GMDs) or an E3 component of electromagnetic pulses (EMP-E3), involving a transducer generating a transduced signal in response to a magnetic field of a current carrying element of a transmission line. The transduced signal reflects harmonic characteristics of the current carrying element, and is amplified and filtered, then digitally converted. Excessive impact is detected when a threshold condition is met with respect to a total harmonic distortion (THD) and/or a change in THD. The THD can be calculated from amplitudes of harmonic components of interest. The amplitudes can be calculated in various ways, including Fourier transforming the digital signal to locate peaks in the resulting spectral lines, or using a phase sensitive detection algorithm in which the digital signal is multiplied by a phase swept reference signal and then integrated.

Abstract: A system determines the frequency of grid signals corresponding to an electrical grid in real time. The system includes a transient detector that monitors a grid signal from a voltage meter or a current meter connected to the electrical grid. The system produces, in real time and at a sampling rate, a deviation signal indicative of a periodicity of the monitored grid signal. The system determines, over one or more cycles of the monitored grid signal, a measurement signal corresponding to the deviation signal. The system determines a frequency signal that corresponds a frequency estimation of the monitored signal by applying a frequency estimation when values of the measurement signal are less than a deviation threshold and maintaining the frequency signal at a constant value when values of the measured signal equal or exceeds the deviation threshold.

Abstract: Systems and methods for detecting a tampering and identifying a location of a digital recording are provided. A frequency sequence and a phase angle sequence may be extracted from the digital recording. A portion of the frequency sequence may be matched to one of a plurality of reference frequency sequences, and a portion of the phase angle sequence may be matched to one of a plurality of reference phase angle sequences. Tampering of the digital recording may be detected when the frequency and phase sequences differ from the matched reference sequences. Moreover, a noise sequence may be extracted from the extracted frequency sequence. A location of the digital recording may be identified by matching the noise sequence to one of a plurality of noise sequences of the plurality of reference frequency sequences.

Abstract: A synchrophasor measurement method for a device configured to take synchronized measurements in a power system is provided. The synchrophasor measurement method includes receiving global positioning system (GPS)-synchronized samples of a signal sensed by the device from the power system; determining a level of distortion of the signal; selecting, based on the level of distortion, a computation method, the computation method being one of an improved zero-crossing (IZC) method and an enhanced phase-lock-loop (EPLL) method; performing the selected computation method to determine at least one parameter of the signal at a reporting frequency, which is at least twice a line frequency of the power system; and outputting, at the reporting frequency, the at least one parameter to an operator of the power system to allow the operator to perform at least one of a monitoring and a controlling of at least one element of the power system.

Abstract: A synchrophasor measurement method for a device configured to take synchronized measurements in a power system is provided. The synchrophasor measurement method includes receiving global positioning system (GPS)-synchronized samples of a signal sensed by the device from the power system; determining a level of distortion of the signal; selecting, based on the level of distortion, a computation method, the computation method being one of an improved zero-crossing (IZC) method and an enhanced phase-lock-loop (EPLL) method; performing the selected computation method to determine at least one parameter of the signal at a reporting frequency, which is at least twice a line frequency of the power system; and outputting, at the reporting frequency, the at least one parameter to an operator of the power system to allow the operator to perform at least one of a monitoring and a controlling of at least one element of the power system.

Abstract: A system and methods for monitoring an impact of geomagnetic disturbances (GMDs) or an E3 component of electromagnetic pulses (EMP-E3), involving a transducer generating a transduced signal in response to a magnetic field of a current carrying element of a transmission line. The transduced signal reflects harmonic characteristics of the current carrying element, and is amplified and filtered, then digitally converted. Excessive impact is detected when a threshold condition is met with respect to a total harmonic distortion (THD) and/or a change in THD. The THD can be calculated from amplitudes of harmonic components of interest. The amplitudes can be calculated in various ways, including Fourier transforming the digital signal to locate peaks in the resulting spectral lines, or using a phase sensitive detection algorithm in which the digital signal is multiplied by a phase swept reference signal and then integrated.

Abstract: Systems and methods for detecting a tampering and identifying a location of a digital recording are provided. A frequency sequence and a phase angle sequence may be extracted from the digital recording. A portion of the frequency sequence may be matched to one of a plurality of reference frequency sequences, and a portion of the phase angle sequence may be matched to one of a plurality of reference phase angle sequences. Tampering of the digital recording may be detected when the frequency and phase sequences differ from the matched reference sequences. Moreover, a noise sequence may be extracted from the extracted frequency sequence. A location of the digital recording may be identified by matching the noise sequence to one of a plurality of noise sequences of the plurality of reference frequency sequences.

Abstract: A hose gripping apparatus enhances a grip on a pressurized hose by magnifying applied force form an operator and creating a larger gripping surface. At least one pressure pad engages the hose and includes a generally concave shape and rigid composition. The concave surface area of the pressure pad conforms efficiently to the hose surface. When wrapped around the pressurized hose, the pressure pad provides the structure and shape necessary to magnify the applied grip from an operator. The pressure pad includes an inner rigid member and a slip resistant coating, such as rubber. A pair of straps attach to the pressure pads in a perpendicular orientation. The straps wrap around the pressurized hose, joining at a hook and loop fastening material from each end. The tightness is easily manipulated by the operator without tools. A handle provides a large gripping surface and orientation for operation of the hose.

Abstract: A natural sweetener composition for oral consumption, for replacing sugar, comprising Stevia extract and at least one additive selected from the group comprising fructooligosaccharides, fructose, magnesium carbonate, and combinations thereof. Also provided is a method for preparing natural sweetener compositions for oral consumption comprised of Stevia extract with certain additives.

Abstract: A device and method for reducing crystal formations, which have a range of resonant frequencies, on electrode plates of an electrical battery, is described. A signal generator is connected to the primary winding of a transformer, having primary and secondary windings, so as to deliver a transformed alternating current signal to the secondary winding. A rectifier is connected to the secondary winding to convert the transformed signal to a train of direct current pulses at a frequency within the range of resonant frequencies, and an output circuit is connected to the rectifier to deliver the train of pulses to the battery causing the crystals to crack and redissolve into the battery solution. There is also a provision for adjusting the frequency of the alternating current signal.

Abstract: Beer is stored in vessels located in a refrigerated storage area before passing through dispensing lines connected to a plurality of dispensing taps. The dispensing lines are maintained in heat-exchanging relationship with cooling apparatus which further depresses the temperature of the beer below that of the refrigerated storage area. By the time the beer reaches the cooling taps, the temperature of the beer is sufficiently depressed so as to permit the beer to be dispensed at a high rate into drinking containers which pass beneath the taps.

Abstract: Beer is stored in vessels located in a refrigerated storage area before passing through dispensing lines connected to a plurality of dispensing taps. The dispensing lines are maintained in heat-exchanging relationship with cooling apparatus which further depresses the temperature of the beer below that of the refrigerated storage area. By the time the beer reaches the cooling taps, the temperature of the beer is sufficiently depressed so as to permit the beer to be dispensed at a high rate into drinking containers which pass beneath the taps.