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WO/2013/073374 |
An electromechanical transducer includes a plurality of cells arranged on a substrate, each cell having a first electrode and a second electrode disposed opposite to the first electrode with a gap interposed between them. A plurality of ...
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WO/2013/072256 |
The invention relates to a converter arrangement for capturing sound waves and/or pressure waves by means of a fiber-optic sensor, a light source and a light detection unit, wherein the light source is coupled on one end at least to an o...
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WO/2013/072175 |
By a one-off determination of coefficients for converting the natural frequencies of free turbine and compressor blades to those of blades in a clamped state, the natural frequencies of other turbine and compressor blades in a clamped st...
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WO/2013/074389 |
A system and method for measuring a frequency of a wire in a vibrating wire gauge. The system may include a signal generator for generating a signal at a frequency that matches a frequency of the wire vibration and an excitation unit for...
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WO/2013/067590 |
A process for vibration analysis, including the steps of: receiving synchronized motion measurements of particle motion in two or three orthogonal dimensions over a selected period of time at a plurality of different measurement location...
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WO/2013/061384 |
This acoustic wave sensor is equipped with: a piezoelectric body (1) that vibrates in the diameter direction in response to an electric signal; a vibrational direction converter (2) that is formed into a substantially conical shape and c...
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WO/2013/053989 |
A system for the purpose of condition monitoring of gearboxes comprises processing equipment (101) that is configured to receive data that contains information of a spectrum of mechanical vibrations measured from a gearbox (107) being mo...
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WO/2013/053586 |
The invention relates to an ultrasonic sensor, more particularly an ultrasonic sensor array (10) having a plurality of MEMS components (14). These are arranged in individual sensor array cells (12), the openings of which are covered by a...
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WO/2013/056182 |
Piezoelectric devices are provided for use in conjunction with a nanochannel for measuring desired characteristics of a charged polymer. Related methods of use and kits are also provided. Systems, methods, and kits for analyzing polymers...
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WO/2013/051196 |
In the present invention, a distributed optical fiber sound wave detection device is provided with an optical pulse emission unit that causes an optical pulse to be incident in an optical fiber and a Rayleigh scattered light reception un...
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WO/2013/044448 |
Provided are a method, device and system for adjusting the vibration frequency of a vibration element in a terminal, belonging to the field of communications. The method includes: when a vibration element in a terminal is in vibration st...
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WO/2013/049436 |
A hand-held or portable vibration sensor device having a housing and a sensor body which generally provides a single point of contact with the machinery or apparatus for which vibration measurement is desired. In one aspect, the sensor b...
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WO/2013/042601 |
The present invention provides: a vibration sensor which does not change much in the sensitivity characteristics over time; a vibrator which is used for the vibration sensor; and an electronic device which is provided with the vibration ...
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WO/2013/041856 |
An imaging system for an object such as human or animal tissue applies acoustic vibrations localised in two or three dimensions and simultaneously illuminates the object with an illuminating electromagnetic wave. The acoustic vibration c...
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WO/2013/037880 |
The invention relates to a method for measuring the dynamic properties of a mechanical structure, the method using an accelerometer that transmits acceleration data, in the form of a measurement signal transmitted through a network, to a...
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WO/2013/039728 |
A detector (50) including a sensor (52) configured to detect entry of a portion of a wheel (20) into a portion of a clearance gap (37) and thereby to signify that the wheel (20) has deviated from the intended wheel path.
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WO/2013/039125 |
The present invention provides a piezoelectric vibration sensor having a high degree of freedom in the vibration detection direction, and that is suitable for achieving a low profile. The piezoelectric vibration sensor is provided with a...
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WO/2013/032332 |
The invention relates to a directional sound measurement device, comprising at least two pressure gradient microphones having the same directional characteristics, being co-located in a different orientation and a processor adapted to di...
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WO/2013/032821 |
This disclosure provides systems, methods and apparatus for sense elements in an electromechanical microphone device. In one aspect, a piezoelectric sense element may include a glass substrate, electrode layers, piezoelectric layers, and...
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WO/2013/026125 |
A piezoelectric film having a porosity between 20 and 40%, a thickness ranging from tens of microns to less than a few millimeters can be used to form an ultrasonic transducer UT for operation in elevated temperature ranges, that emit pu...
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WO/2013/027736 |
A piezoelectric vibration sensor (1) is configured of a piezoelectric vibrator (2), a base (3), a potential difference measuring means (4), and a calculating means (5). The piezoelectric vibrator (2) is configured of a piezoelectric cera...
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WO/2013/027068 |
There is provided a distributed sensor, comprising a length of optic fibre; an interrogator unit having a detector arranged to detect light from the optic fibre, wherein the interrogator is arranged to provide distributed sensing on the ...
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WO/2013/027742 |
The present invention is characterized in including: a vibration detection procedure which outputs the vibration of a device to be monitored, which is an object of failure prediction, as a normal-state detection signal; an anomalous vibr...
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WO/2013/027740 |
This piezoelectric vibration sensor is provided with a piezoelectric structural body that includes a piezoelectric element, which is disposed in a package, and vibrates corresponding to external vibration. The piezoelectric vibration sen...
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WO/2013/023425 |
A polarization sensitive distributed optical frequency domain reflection turbulence sensing device employing optical frequency domain reflection technology and polarization control and extraction technology, including an ultra-narrow lin...
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WO/2013/024926 |
The present invention relates to an acoustic camera using a microelectromechanical system (MEMS) microphone array, consisting essentially of: an acoustic detection device, (30) including a printed circuit board (20) on which a plurality ...
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WO/2013/022559 |
A method and apparatus for measuring frequency and amplitude of an input signal representative of an echolocation call. In one example, a system includes a combination of a digital sampling channel and a zero crossing measurement channel...
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WO/2013/020213 |
The present disclosure relates to piezoelectric sensors and piezoelectric sensor arrays, to methods of manufacturing therefor, and to a method of measuring characteristics of a mechanical wave using a piezoelectric sensor array. A piezoe...
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WO/2013/017452 |
The present invention relates to a method for determining the oscillation amplitude of a sonotrode excited by a converter, wherein the converter is connected to a current generator and the current IE(t) provided by the current generator ...
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WO/2013/015372 |
Methods for modifying the combustion method of an internal combustion engine in accordance with a driving state have been proposed, but the situation in which combustion noise occurs may vary in different combustion methods, and the accu...
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WO/2013/016304 |
A music device for making music includes a first input part for generating a first signal based on a user input, a music signal generator for generating a music signal based on the first signal, a second input part for generating a secon...
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WO/2013/010903 |
A method for monitoring vibrations of the winding overhang in a generator (2) comprises the following steps: - detection of vibrations of the winding overhang (15) during the operation of the generator; - transformation of signals of the...
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WO/2013/008632 |
This piezoelectric vibration sensor is provided with a housing that houses a piezoelectric vibrator and a circuit board electrically connected to the piezoelectric vibrator. The piezoelectric vibration sensor is also provided with: a sig...
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WO/2013/007071 |
A sensor for probing a geological disaster and a monitoring and alarming device thereof comprise three fixed plates (1, 2, 3). Each fixed plate is provided with a through hole in the middle. A vibration diaphragm (8) is mounted between t...
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WO/2013/007044 |
Disclosed is a method for detecting the vibration of an arm rest of engineering machinery. The method comprises: reading a rotation angle of an arm rest in a horizontal plane and a rotation angle of the arm rest in a vertical plane at mu...
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WO/2013/009258 |
A method of operating an apparatus for analysing the condition of a machine part rotating with a speed of rotation (f ROT > Vr), comprising the steps of: receiving a first digital signal (SMD, SR, Sf) dependent on mechanical vibrations e...
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WO/2013/007382 |
The invention relates to a method for determining the stability of a mast that has been properly installed at an installation site, wherein the oscillation spectrum of the mast that is artificially induced or induced by environmental inf...
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WO/2013/006465 |
Systems and methods of identifying electrical sources of audible acoustic noise may involve identifying first frequency content of a circuit board, wherein the first frequency content is associated with at least one of acoustic noise and...
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WO/2013/004951 |
The invention relates to the measurement of blade tip passage times in a turbomachine using a capacitive sensor mounted on a casing in line with the path followed by the tips (80) of the blades of a compressor rotor of the turbomachine. ...
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WO/2013/000984 |
For identifying a fault in an electrical machine vibration is measured in a plurality of radial directions of the stator 30. On the basis of the vibration measurements a vibration frequency and a mode shape of the vibration at this frequ...
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WO/2013/000739 |
The invention relates to a capacitive sensor element for detecting a displacement x and to a method for operating the same. According to the invention, the capacitive sensor element consists of a plurality of capacitor electrodes (12), w...
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WO/2013/002809 |
A micro electromechanical systems (MEMS) sensor is excited. The response of the MEMS sensor is measured. The MEMS sensor is calibrated.
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WO/2013/001385 |
The invention is directed to a method for monitoring vibrations to detect distinct vibration events in an acceleration waveform converted into acceleration samples. The method comprises: storing the acceleration samples as a sequence of ...
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WO/2012/177547 |
A distributed acoustic sensor, comprises a housing having a longitudinal bore therethrough, an optical fiber supported in the bore; and an inertial member supported within the bore, wherein the fiber is mechanically coupled to the inerti...
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WO/2012/175954 |
This application relates to methods and apparatus for monitoring of conduits, especially oil or gas pipelines, as an object such as pipeline pig moves within the conduit. The method comprises monitoring at least part of a conduit(206) us...
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WO/2012/175280 |
The invention relates to a method for determining the passage of audible sound energy through a double-wall structure which comprises a first wall, a second wall and a double-wall space in between. In order to take the double-wall effect...
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WO/2012/175492 |
The invention relates to a capacitive ultrasonic transducer, comprising a sensor head having a back plate, the structured front side of which is provided with an insulating layer and the back side of which is provided with an electrode. ...
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WO/2012/176199 |
A system for distinguishing and identifying speech segments originating from speech of one or more relevant speakers in a predefined detection area. The system includes an optical system which outputs optical patterns, each representing ...
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WO/2012/171300 |
A sound abnormality detection system for power device comprises an audio detection subsystem and a computer subsystem wirelessly communicated with the audio detection subsystem. The audio detection subsystem comprises an audio collection...
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WO/2012/172124 |
The subject matter of the invention is a multi-channel electronic architecture for advanced monitoring of structural integrity using ultrasonic guided wave or Lamb wave technology, which makes it possible to construct an integrated appar...
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