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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...
9026390 Interleaved RF triggering on a test and measurement instrument  
A time-interleaved RF triggering method and system on a test and measurement instrument includes an acquisition component that samples a waveform, which is converted into an amplitude, phase,...
8996326 Counting device, physical quantity sensor, counting method, and physical quantity measuring method  
A tension/speed measuring device comprises a laser driver for driving the oscillation of a semiconductor laser, and a counter for counting interference waveforms included in the output of a...
8990033 Monitoring operational conditions of a cargo ship through use of sensor grid on intermodal containers  
A computer-implemented method, system, and/or computer program product monitors operational conditions of a cargo ship. A baseline composite vibration pattern is established from readings...
8954286 Method and device for measuring electromagnetic wave  
A waveform acquiring unit acquires a time waveform of an electromagnetic wave. The time waveform is decomposed into wavelet expansion coefficients by wavelet transform. Influence levels of the...
8942938 Electromagnetic spectrum aerial surveying  
Disclosed is an aerial surveying system for collecting electromagnetic spectrum data. Spectrally tuned antennas are used on an airplane to prefilter the data in accordance with spectral frequency...
8878529 Sensor module and method for monitoring the function thereof  
A method for monitoring the function of a sensor module including sensor which generates a measurement signal for a physical quantity to be determined and applies the measurement signal to an...
8878549 AC impedance measuring device  
An AC impedance measuring device includes: a signal generator configured to provide a first signal on which a period signal is superimposed to a DUT; a Fourier transform unit configured to perform...
8880369 Occupancy measurement and triggering in frequency domain bitmaps  
A method is disclosed for triggering upon signal events occurring in frequency domain signals. The method includes repeatedly sampling a time-varying signal and generating a plurality of digital...
8880370 Multiple signals detection system  
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...
8858450 Photoplethysmography apparatus and method employing high resolution estimation of Time-Frequency Spectra  
A photoplethysmography apparatus and method is provided for high resolution estimating of Time-Frequency Spectra (TFS) and associated amplitudes using Variable Frequency Complex Demodulation...
8823539 Method of displaying multi-fiber test results  
A display method and apparatus provides an easy to interpret presentation of multiple channel data, in the form of columns where the height of the column represents the relative measurement. A...
8818746 Crack detection in thick-walled cylinders  
A simple, inexpensive, and fast method of establishing if a defect does or does not exist within a thick-walled solid geometry, which is especially useful to detect if such a defect, a crack,...
8818745 Monitoring and analysis of power system components  
Various methods and systems are provided for monitoring and analysis of electrical components. In one embodiment, a method includes obtaining raw radio frequency (RF) component data associated...
8812268 Method and apparatus for resolving piled-up pulses by using a mathematical transform  
A method and apparatus for resolving individual signals in detector output data, the method comprising obtaining or expressing the detector output data as a digital series, obtaining or...
8810173 Rotating machinery condition monitoring using position sensor  
Continuous monitoring and fault diagnosis of rotating machinery during variable speed operation is performed using only a position feedback signal. The position sensor generates a periodic...
8798949 Spectrometer, measuring apparatus, and method of data processing  
A spectrometer has: Accumulation means to obtain a data set containing N data points, repeating the measurement M times to obtain M spectral data sets or time-domain data sets S1 (d1 to dN) to SM...
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...
8773145 Method for characterizing an electrical system by impedance spectroscopy  
The invention relates to a method for more precisely characterizing an electrical system by impedance spectrometry. The method consists of applying an input signal to the electrical system that...
8773133 Adaptive multichannel locator system for multiple proximity detection  
Man-portable locator systems for locating buried or otherwise inaccessible pipes, conduits, cables, wires and inserted transmitters using detector arrays and stochastic signal processing and...
8768638 Method and device for performing spectrum analysis of a wanted signal or noise signal  
A method and device for performing spectrum analysis of a signal in a plurality of frequency bands with respective different frequency resolutions. The method includes a data acquisition step and...
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...
8731856 Frequency spectrum analyzing apparatus  
A frequency spectrum analyzing apparatus for performing a frequency spectrum analysis with respect to a detected value of an operating parameter of an internal combustion engine in synchronism...
8718960 System and method of selecting white gaussian noise sub-band using singular value decomposition  
Provided is a method of selecting a white Gaussian noise sub-band using singular value decomposition (SVD). The method includes selecting a first frequency band, verifying whether a signal is...
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...
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...
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...
8626459 Defect detection in objects using statistical approaches  
Disclosed are systems, methods and articles, including an inspection system that includes at least one generator to apply energy to an object at an application point to cause waves to travel, at...
8612182 Methods and systems for isolating a frequency in a rotating machine  
A method of isolating a frequency in a rotating machine having at least one sensor includes receiving, from the at least one sensor, a sensor signal that includes at least one frequency,...
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...
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...
8589104 Device and method for compensating color shifts in fiber-optic imaging systems  
A color value for an optical fiber of a fiberscope can be generated on the basis of the intensity values of a plurality of sensor elements of a sensor element arrangement that are sensitive to one...
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...
8527227 Method and device for measuring electromagnetic wave  
A waveform acquiring unit acquires a time waveform of an electromagnetic wave. The time waveform is decomposed into wavelet expansion coefficients by wavelet transform. Influence levels of the...
8521460 Multi-domain test and measurement instrument  
A test and measurement instrument including an input port configured to receive an input signal; a digitizer configured to digitize the input signal; a decimator coupled to the digitizer and...
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...
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...
8466689 Methods and systems for monitoring capacitor banks  
A method of monitoring a capacitor bank comprising a plurality of capacitor strings connected in parallel, each capacitor string comprising a plurality of capacitors connected in series is...
8458140 Apparatus and method for evaluating data points against cadastral regulations  
A system for evaluating data points against cadastral regulations to include a plurality of software modules programmed into a computer system with software and hardware configured to store and...
8452544 Utility and method for the application of signal advance amplification to analog waveform or signal detection, acquisition and processing  
An analog waveform signal detection/data acquisition system that is based on negative group delay for reducing inherent delay in analog waveform or signal detection and acquisition and...
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....
8442789 Method and device for determining a frequency mask for a frequency spectrum  
A method and a device for determining a frequency mask disposed above or below a frequency spectrum of a detected signal determines every individual ordinate value of a first envelope curve...
8421440 Apparatus for spectrum sensing and associated methods  
In one embodiment, an apparatus comprises a nano-scale spectrum sensor configured to be electromagnetically excitable at a predetermined frequency based on received ambient electromagnetic...
8392134 Antenna testing device and antenna testing method using the same  
An antenna testing device includes an analyzer, a transmission probe electrically connected to the analyzer, a receiving probe electrically connected to the analyzer, and a shielded box having a...
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...
8380450 Determination of blade vibration frequencies and/or amplitudes  
A method is provided for determining vibration frequencies of rotating blades mounted on a rotor which rotates relative to and is supported by a rotor support structure. The method includes the...