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9031791 System and method for detecting rock fall  
Aspects of the invention provide systems and methods for using ballast sensors to detect rock fall events in a vicinity of railway tracks or similar roadways or tracks. The ballast sensors are...
9025287 Arc fault detection equipment and method using low frequency harmonic current analysis  
An arc fault detection circuit includes a current sensing circuit coupled to a line conductor carrying a current. The current sensing circuit operates to sense current and output data indicative...
9018960 Method and device for enhancing the reliability of generator ground fault detection on a rotating electrical machine  
A method for enhancing the reliability of generator ground fault detection based on a signal injection scheme, wherein the generator includes a winding. The method includes injecting a test signal...
8972215 Method and system for determining parameters of sinusoidal signals  
At least one parameter of a signal is determined, wherein the signal is a sinusoidal signal including noise, wherein the parameter includes at least one of a frequency of the signal, and an angle...
8924173 Determining harmonics  
Methods, systems, and devices for determining a harmonic are described herein. One method includes determining a temperature of a circuit conductor while the circuit conductor is conducting a...
8924174 Determining power flow  
Methods, systems, and devices for determining a power flow are described herein. One method includes determining a temperature of a circuit conductor while the circuit conductor is conducting a...
8903669 Multi-band receiver using harmonic synchronous detection  
A method and apparatus for detecting an object. A first collimated beam having a first frequency and a second collimated beam having a second frequency is transmitted. At least one of the first...
8898027 Method and system for a comprehensive analysis of low frequency oscillation  
A method and a system for a comprehensive analysis of low frequency oscillation. The method includes: firstly, initiating a wide area measurement system WAMS (71) to perform real-time monitoring;...
8886474 System and apparatus for testing cable  
An apparatus for testing one or more transmission lines is disclosed. The apparatus comprises a processor capable of configuring the apparatus in one of a master mode and a slave mode. The...
8880372 Relative time measurement system with nanosecond level accuracy  
A system for instantaneous and continuous nanosecond-level accuracy determination of a relative time offset between at least two non-collocated timing units, the system including at least two...
8868364 Apparatus and method for real time harmonic spectral analyzer  
In one embodiment, a measuring device may comprise two oscillators. The first oscillator may generate a local reference signal in a frequency detector to detect a fundamental frequency of the...
8855932 Method and apparatus for measuring surface air pressure  
The present invention is directed to an apparatus and method for remotely measuring surface air pressure. In one embodiment, the method of the present invention utilizes the steps of transmitting...
8849587 System and method for remotely monitoring the health of a transformer  
A method for determining the health of a transformer through vibration measurement is disclosed. A vibratory signal, in the form of a physical mechanical vibration or auditory signal, is received...
8843329 Measuring filling level by means of evaluating an echo curve  
A method for filling level measuring includes generating an echo curve. The echo curve is analyzed by at least one analysis method selected from analysis methods including analyzing the echo curve...
8831909 Step detection and step length estimation  
Step detection and step length estimation techniques include detecting salient points in sensor data of one or more sensors. A step frequency is estimated based on a time interval between the...
8825421 Digital implementation of a tracking filter  
Methods and systems for tracking an electronic signal corresponding to an operating frequency of an electronic component are provided. A method may include sampling the signal to determine...
8798950 System and method for ultrasonic transducer control  
A system for controlling an ultrasonic transducer utilizes an indication of the relative phase of the voltage on the transducer and the current passing through the transducer to control the...
8791689 Oscilloscope probe  
Disclosed is a probe for an oscilloscope comprising a multi-stage transistor amplifier that acts as an impedance transformer. Said amplifier is a d.c.-coupled emitter follower circuit that is...
8762087 Accurate integrated circuit performance prediction using on-board sensors  
This invention places plural ring oscillators on a semiconductor chip during manufacture. The respective oscillation frequencies of these ring oscillators are measured. The semiconductor chip is...
8762097 Method and apparatus for a thermal control system based on virtual temperature sensor  
In one aspect, a data processing system includes a virtual temperature sensor to provide system temperature for different system configurations, and a controller coupled to the sensor to control...
8744025 Digital signal conditioning  
Methods, systems and other embodiments associated with pre-processing a signal for spectral analysis are presented. A system for pre-processing a digital input signal includes a digital down...
8718987 Circuit simulation model of capacitor, constructing method of simulation model, method of circuit simulation, circuit simulator  
Provided is a circuit simulation model that can suitably represent capacitor characteristics, thereby realizing accurate circuit design and circuit analysis. A SPICE model is constituted of a...
8718961 Frequency measurement method, frequency measurement device and apparatus equipped with frequency measurement device  
A frequency measurement device includes: a counter section that counts a supplied pulse stream signal to be measured at a predetermined time interval and outputs a stream of count values...
8712693 Method for enhanced subsurface electromagnetic sensitivity  
A method for measuring an enhanced electromagnetic field response, especially in a submarine environment, for the purposes of subsurface data acquisition and processing. An electromagnetic field...
8694274 Distributed spectrum sensing  
In summary, the invention relates to a device, a system, a method and a computer program for spectrum sensing. A detection procedure for detecting a signal of interest or an event by using a...
8676526 High speed frequency and phase estimation for flow meters  
Meter electronics (20) for processing sensor signals in a flow meter and for computing mass flow rate, density or volume flow rate includes an interface (201) for receiving a first sensor signal...
8674680 Method and device for fast measurement of frequency response with scalable short chirp signals  
A method and device are provided for fast impedance measurement of a biological object having dynamically varying in time parameters, wherein a titlet shaped pulse is introduced into the object...
8660848 Methods and systems for detection from and analysis of physical signals  
In the method of these teachings for detection of physical phenomena from or analysis of physical signals, an improved Empirical Mode Decomposition method decomposes physical signals...
8649989 Time-domain triggering in a test and measurement instrument  
Embodiments of this invention provide enhanced triggering capabilities such as frequency and phase triggering in a test and measurement instrument, such as a Real-Time Spectrum Analyzer (RTSA) or...
8594961 Remote interrogation of a passive wireless antenna sensor  
The condition of a structure using remote interrogation of a multi-state passive wireless antenna sensor that has a known resonant frequency when mounted on the structure. The passive wireless...
8593132 Parameter calculating apparatus and simulation apparatus  
A parameter calculating apparatus includes a signal generator that generates at least two input signals which each contain different frequency components; a signal inputting unit that inputs the...
8588703 Arbitrary multiband overlay mixer apparatus and method for bandwidth multiplication  
An apparatus and method for splitting a wide band input signal and overlaying multiple frequency bands on each path associated with one or more digitizers. All frequencies from the split signal on...
8582675 Pre-channelized spectrum analyzer  
A pre-channelized spectrum analyzer utilizes a channelizer as a preprocessor for parallel-configured low-resolution spectrum analyzers so as to perform as a high resolution spectrum analyzer. The...
8566053 Method and apparatus for compressive parameter estimation and tracking  
A method for estimating and tracking locally oscillating signals. The method comprises the steps of taking measurements of an input signal that approximately preserve the inner products among...
8532207 Methods and systems for distinguishing a signal of interest from interference signals  
A method for distinguishing a signal of interest from one or more interference signals in a received analog signal comprises receiving an analog signal at a radio front end, and transmitting the...
8527214 System and method for monitoring mechanical seals  
A mechanical seal monitoring system and method that measure the wear of seal faces of a mechanical seal where the mechanical seal seals a rotating machine portion from another portion of the...
8514919 Synthetic instrument unit  
Systems and other embodiments associated with synthetic instrumentation are presented. A reconfigurable synthetic instrumentation unit comprises an input module, with dual input/output ports and...
8502612 Method and apparatus for determining within-die and across-die variation of analog circuits  
Described herein is the method and apparatus for determining frequency of an oscillator coupled with one or more analog devices, and for determining within-die or across-die variations in an...
8504209 Controlling a device that generates vibrations in a computer system  
Some embodiments of the present invention provide a system that controls a device that generates vibrations in a computer system. During operation, a critical vibration frequency is determined for...
8489351 System and method for frequency measurement based on quadratic forms  
A system and methods for determining points for an algorithm to calculate the frequency of a waveform measured from a monitoring device. Data points are measured from the waveform. A last point of...
8487608 System for measuring high-frequency signals with standardized power-supply and data interface  
In a system for measuring at least one high-frequency signal, comprising at least one broadband probe and at least one measuring apparatus, each broadband probe and each measuring apparatus...
8483976 Method for estimating tire wear and apparatus for estimating tire wear  
The degree of tire wear is estimated with constancy and accuracy even when the road surface becomes rough during a vehicular run. The deformation speeds Vtf and Vtk of the tread of the tire are...
8473232 Measuring apparatus  
A measuring apparatus is capable of separately measuring at least one of the purely resistive component and the reactance component of a measured circuit. The measuring apparatus applies an AC...
8473234 Method and detection assembly for the detection of changes in a building structure of a wind turbine  
A method for detecting changes in a building structure of a first wind turbine is provided. A reference value representing the eigenfrequency of the first wind turbine is monitored over time,...
8467985 Automated synchronization of data between electrical grids  
A method and system of automatically correlating data measured by monitoring devices that monitor first and second electrical grids. The second electrical grid producing alternating current...
8442779 Identifying degraded fans in datacenters  
A method for identifying a degraded fan measures acoustic data from an operating datacenter fan. A motor rotation frequency and a vane passing frequency are determined from the acoustic data....
8428898 Method and system for correcting frequency response of a signal sampler  
A method of filtering a signal sampled by a sampler, for example, in an equivalent time oscilloscope includes applying a correction to an actual frequency response of the sampler, with respect to...
8407020 Fast method to search for linear frequency-modulated signals  
A computer implemented method for determining frequency and slope of a linear frequency modulated signal. Windowed signal data is collected and used for formulating a search surface function which...
8392133 Method for measuring shear wavespeed in an isotropic plate  
Using a mechanical shaker test the shear wavespeed in a plate is estimated by applying a cyclical point force to the plate, measuring normal velocity of waves caused by the force, transforming...
8386202 Communication device for household electric appliances and monitoring system using said device  
A communication device, for connecting one or more electrical appliances to a remote service centre, comprises a control unit (AMC), means (PLG) for connecting the device (HG) to an alternating...