| Patents for G01H 9 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means (3,383) |
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| 07/20/2011 | CN101751811B Laser scan type vibration integrated demonstrator |
| 07/20/2011 | CN101726354B Optical fiber laser vector hydrophone |
| 07/20/2011 | CN101666740B Measuring device of micro scale dynamic response |
| 07/14/2011 | US20110167916 Optical fiber type vibration meter |
| 07/14/2011 | DE102010004366A1 Vorrichtung und Verfahren zur Kontrolle der Verfestigung einer Kohleschüttung Apparatus and method for controlling the solidification of a coal bed |
| 07/06/2011 | CN201892569U High-sensitivity and low-frequency vibrating sensor based on MMF-TFBG optical fiber structure |
| 07/06/2011 | CN201892568U High-precision laser interference type hydrophone |
| 07/06/2011 | CN102119323A Push-pull two wavelength fabry perot sensor for fiber optic acoustic sensor arrays |
| 07/05/2011 | CA2442324C A multi-fiber optic 2d-array device for sensing and localizing environment perturbation using speckle image processing |
| 06/30/2011 | WO2011076850A1 Method and system for enhancing the spatial resolution of a fiber optical distributed acoustic sensing assembly |
| 06/30/2011 | CA2782773A1 Method and system for enhancing the spatial resolution of a fiber optical distributed acoustic sensing assembly |
| 06/29/2011 | EP2338040A1 Method and apparatus for monitoring blade vibration with an imaging fiber optic ribbon probe |
| 06/29/2011 | EP2338039A1 Method and apparatus for monitoring blade vibration with a fiber optic ribbon probe |
| 06/29/2011 | CN201885826U Electromechanical equipment optical fiber online monitoring system |
| 06/28/2011 | US7969823 Methods, systems and apparatus for measuring acoustic pressure |
| 06/22/2011 | CN102103012A Optical fiber vibration sensor for detecting rotating speed of automobile engine |
| 06/22/2011 | CN102103011A High-precision laser interference hydrophone |
| 06/22/2011 | CN102103010A Interference structure for defense area type vibration sensing system |
| 06/16/2011 | WO2011045525A4 Method and device for estimating the acoustic pressure in a moving fluid and computer program |
| 06/15/2011 | EP2333498A1 Sagnac interferometer-type fiber-optic current sensor |
| 06/15/2011 | EP2331919A2 Apparatus for sensing motion of a surface |
| 06/15/2011 | CN201867911U GPRS (General Packet Radio Service) transmission type vibration sensing optic cable alarm system |
| 06/15/2011 | CN201867241U Device for fast detecting natural frequency of motor rotor |
| 06/15/2011 | CN102095488A Optical fiber silicon micro sound pressure sensor-based packaging structure of low-stress convoluted diaphragm |
| 06/15/2011 | CN102095487A Optical path structure of time-division-multiplexing optical fiber hydrophone array and modulation and demodulation method thereof |
| 06/15/2011 | CN102095486A Full optical fiber single-end closed type differential interferometer |
| 06/15/2011 | CN102095435A Two-channel feedback loop fiber interferometer |
| 06/15/2011 | CN102095434A Reflection type full optical fiber interference system |
| 06/15/2011 | CN102095433A Closed loop all-fiber interference system |
| 06/14/2011 | US7961551 Determining directional propagation attributes of a seismic event |
| 06/14/2011 | CA2651611C Method and apparatus for ultrasonic laser testing |
| 06/08/2011 | CN201859151U Inertia parameter sensing device based on spring type optical fiber micro-bending loss |
| 06/08/2011 | CN201859009U Laser interference type hydrophone |
| 06/08/2011 | CN201859008U High temperature resistant optical fiber vibration sensor |
| 06/08/2011 | CN102087138A System and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed |
| 06/01/2011 | CN102080986A Fiber bragg grating vibration sensing component, fiber bragg grating vibration sensing device, vibration measuring system and method |
| 06/01/2011 | CN102080985A Vibration measurement equipment for rail and measurement system using same |
| 06/01/2011 | CN102080972A External cavity-type optical fiber Fabry-Perot sensor and system and method for vibration monitoring |
| 06/01/2011 | CN101701845B Method for identifying running state of wheels of locomotive |
| 06/01/2011 | CN101556724B Safety management system of optical fiber perimeter and pattern recognition method thereof |
| 06/01/2011 | CN101315274B Monitoring device and real-time monitoring method for bridge vibration deformation |
| 05/25/2011 | EP2325655A2 Detection of speed or vibrations using a heterodyne LIDAR lidar device |
| 05/25/2011 | CN102077052A Vision system for scan planning of ultrasonic inspection |
| 05/25/2011 | CN102072761A General calibration system and method of phase shift sensitivity based on optical phase demodulator |
| 05/25/2011 | CN102072760A Curve measuring method and system for amplitude of mechanical vibration |
| 05/25/2011 | CN102072741A Ultra-long distance distribution type optical fiber sensor and using method thereof |
| 05/25/2011 | CN101608946B Fiber laser hydrophone signal demodulating system |
| 05/19/2011 | WO2011058899A1 Device for measuring sound source distribution in three-dimensional space |
| 05/19/2011 | WO2011058314A1 Optic fibres and fibre optic sensing |
| 05/19/2011 | WO2011058313A2 Improvements in distributed sensing |
| 05/19/2011 | US20110113888 Device for measuring the relative alignment of two articles, method for determining a quality characteristic and vibration measurement device and method |
| 05/19/2011 | CA2780623A1 Improvements in distributed sensing |
| 05/19/2011 | CA2780569A1 Optic fibres and fibre optic sensing |
| 05/18/2011 | CN201837728U Rock stratum identification device based on array fiber sensor |
| 05/18/2011 | CN201837450U Vibration sensor for detecting vibration of washing machine |
| 05/18/2011 | CN102063777A All-fiber debris flow monitoring system |
| 05/18/2011 | CN102062787A Selective mode self-excitation method and device of MEM (Micro-Electrical Mechanical) sensor |
| 05/18/2011 | CN101750143B Integrated optical interference three-dimensional vibration monitor |
| 05/17/2011 | US7944367 Phase signal triggering hold off |
| 05/17/2011 | US7942059 Sensor arrangement |
| 05/12/2011 | DE102009053132A1 Vorrichtung zur Messung der relativen Ausrichtung zweier Gegenstände und zur Schwingungsmessung und Verfahren zur Bestimmung einer Qualitätskennzahl Device for measuring the relative alignment of two objects and for vibration measurement and method for determining a quality score |
| 05/11/2011 | EP2318811A1 Fibre optic acoustic sensing |
| 05/11/2011 | CN201828334U Ultra-low-frequency vibration metering instrument calibration system and laser interferometer thereof |
| 05/11/2011 | CN102052962A Fluid-solid coupled light deflection detection device |
| 05/10/2011 | CA2379900C Method and devices for time domain demultiplexing of serial fiber bragg grating sensor arrays |
| 05/04/2011 | CN102042866A Device and method for interferometric vibration measurement on an object |
| 05/04/2011 | CN101701844B Optical fiber vibration sensing system and using method thereof based on double Mach-Zehnder interferometers |
| 04/30/2011 | CA2718198A1 Fiber-optic based thrust load measurement system |
| 04/28/2011 | WO2011048373A2 Downhole monitoring with distributed acoustic/vibration, strain and/or density sensing |
| 04/28/2011 | WO2010020795A8 Fibre optic acoustic sensing |
| 04/28/2011 | CA2778086A1 Downhole monitoring with distributed acoustic/vibration, strain and/or density sensing |
| 04/27/2011 | CN102033189A Method for measuring transformer product short circuit vibration displacement and deformation by utilizing laser sensor |
| 04/26/2011 | US7933004 Method of acquiring information with a microcavity laser |
| 04/26/2011 | US7933003 Method and apparatus for studying surface vibrations by moving speckle interferometer |
| 04/21/2011 | WO2011045525A1 Method and device for estimating the acoustic pressure in a moving fluid and computer program |
| 04/21/2011 | WO2011044619A1 Modalmetric fibre sensor |
| 04/21/2011 | WO2010026386A3 Apparatus for sensing motion of a surface |
| 04/21/2011 | US20110090508 Device and method for interferometric vibration measurement of an object |
| 04/21/2011 | DE102009049932A1 Vorrichtung und Verfahren zur interferometrischen Schwingungsmessung an einem Objekt Apparatus and method for interferometric measurement of vibration to an object |
| 04/20/2011 | CN102023050A 激光干涉式水听器 Laser interferometric hydrophone |
| 04/20/2011 | CN101444026B System and method for probing sound by promoting SNR |
| 04/14/2011 | DE102009043661A1 Device for visualization of audio signals or signals, has membrane is connected, displaced in motion or is covered partly with rigid masks, where mask is formed in its color, pattern and structure |
| 04/13/2011 | EP1476717B1 Optical displacement sensor |
| 04/13/2011 | CN102012259A Fast test device for natural frequency of motor rotor |
| 04/07/2011 | WO2011039116A1 Optical method and device for a spatially resolved measurement of mechanical parameters, in particular mechanical vibrations by means of glass fibers |
| 04/07/2011 | CA2775845A1 Phase based sensing |
| 04/06/2011 | EP2304398A2 Push-pull two wavelength fabry perot sensor for fiber optic acoustic sensor arrays |
| 04/06/2011 | CN201788759U Intelligent type overhead transmission conductor and monitoring system thereof |
| 04/06/2011 | CN201788017U Accurate positioning type distributed fiber vibration sensor |
| 04/06/2011 | CN102003993A Double-reflection delay type locatable all optical fiber vibrating sensor |
| 04/06/2011 | CN102003977A Multi-wavelength optical fiber sensor based on Fabry-Perot cavity |
| 04/06/2011 | CN102003970A Dynamic signal demodulation method for fiber laser sensor |
| 04/06/2011 | CN101504312B Optical-fiber acoustic sensor for sound detection |
| 03/31/2011 | DE102009043546A1 Verfahren und Vorrichtung zur ortsaufgelösten Messung mechanischer Größen, insbesondere mechanischer Schwingungen Method and apparatus for spatially resolved measurement of mechanical quantities, especially mechanical vibrations |
| 03/30/2011 | CN101397096B Paper carrying apparatus and image forming apparatus having the same |
| 03/23/2011 | CN201773109U Inertia parameter sensing device based on optical fiber microbending loss |
| 03/23/2011 | CN101988851A Counting device, physical quantity sensor, counting method and physical quantity measuring method |
| 03/17/2011 | WO2011031142A1 Optical fiber, method of preparation thereof and device |
| 03/09/2011 | EP2050411B1 Light irradiation apparatus |
| 03/03/2011 | US20110049328 Device for measuring the line of sight jitter of an optical instrument |