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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02/11/2009 | EP2021747A2 Fiber optic mems seismic sensor with mass supported by hinged beams |
02/11/2009 | CN101365928A Sensor and system for monitoring structural health conditions |
02/05/2009 | WO2008045274A3 Fiber optics sound detector |
02/04/2009 | CN201191221Y Disturbance signal determination module of distributed optical fiber vibration sensor system |
02/04/2009 | CN201191220Y Disturbance detecting optical path apparatus of complete optical fiber disturbance sensing system |
01/29/2009 | WO2006134586A3 Shielded communication transducer |
01/29/2009 | US20090025480 System and Method for Optical Sensing of Surface Motions |
01/28/2009 | CN201188029Y Apparatus for measuring ultrasound suspending field of multiplication light path |
01/22/2009 | WO2009010386A1 Opto-electrical ultrasound sensor and system |
01/15/2009 | WO2009008478A1 Acoustic measurement device and acoustic measurement method |
01/15/2009 | WO2009008010A2 Method and apparatus for the simultaneous generation and detection of optical diffraction interference pattern on a detector |
01/15/2009 | WO2008110780A3 Phase based sensing |
01/15/2009 | WO2008105974A3 Ultrasonic pressure sensor and method of operating the same |
01/14/2009 | EP2015105A1 Opto-electrical ultrasound sensor and system |
01/14/2009 | EP2013591A2 Tri axis high frequency fiber optic acoustic sensor |
01/14/2009 | CN201181238Y Ultrasound suspending field measurement apparatus |
01/13/2009 | US7477571 Method for detecting vibrations in a biological organism using real-time vibration imaging |
01/08/2009 | US20090008184 Marine acoustic sensor assembly |
01/08/2009 | DE102007031742A1 Test specimen's e.g. roller bearing, noise testing device, has laser vibrometer detecting vibrations on test specimen, and evaluation unit outputting quality signal in dependence of detected vibrations of test specimen |
01/07/2009 | EP1360465B1 Multi-mode vibration sensor laser |
01/07/2009 | CN201177513Y Bidirectional interference type optical fiber sensor |
01/06/2009 | US7474411 System and method to reduce laser noise for improved interferometric laser ultrasound detection |
12/31/2008 | CN201173390Y Limit type signal processing and recognition module for distributed optical fibre disturbance sensing system |
12/30/2008 | CA2369729C Large scale wdm/tdm sensor array employing erbium-doped fiber amplifiers |
12/25/2008 | US20080316496 Method and Apparatus For Studying Surface Vibrations by Moving Speckle Interferometer |
12/24/2008 | CN101328803A Controlling a dynamic signal range in an optical time domain reflectometry |
12/17/2008 | EP2002218A1 Fibre optic sensor package |
12/17/2008 | CN100443866C Multi-piece integration type three-dimensional vector hydrophone apparatus |
12/16/2008 | US7466631 Enhanced sensitivity pressure tolerant fiber optic hydrophone |
12/11/2008 | WO2008149059A1 Seismic cable structure |
12/10/2008 | CN101319933A Vibration detecting system using light interference mode |
12/09/2008 | US7463555 Tri axis high frequency fiber optic acoustic sensor |
12/03/2008 | CN101315274A Monitoring device and real-time monitoring method for bridge vibration deformation |
11/27/2008 | DE102007023826A1 Verfahren und Vorrichtung zur berührungslosen Schwingungsmessung Method and device for contactless measurement of vibration |
11/26/2008 | CN201155991Y Optical fibre grating acceleration sensor |
11/26/2008 | CN100437050C Distribution type fiber-optic vibration sensor |
11/20/2008 | WO2008090381A3 Detecting particulate contaminants in a fluid |
11/19/2008 | EP1992926A2 Optical fiber vibration sensor |
11/19/2008 | CN101308042A Optical fiber vibration sensor |
11/13/2008 | WO2008107355A3 Physical value sensor comprising an optical fibre that is not sensitive to static values |
11/12/2008 | CN201149522Y Apparatus of multiple times focus for measuring ultrasonic suspending field |
11/12/2008 | CN201149521Y Apparatus with upside-down mounting telescope for measuring ultrasonic suspending field |
11/12/2008 | CN101303788A Perimeter alarming method and system for implementing orientation of composite type complete optical fiber |
11/12/2008 | CN101303241A Sensor based on asymmetrical distribution feedback technology |
11/06/2008 | WO2008111002A3 Device and a method for monitoring vital body signs |
11/05/2008 | CN201145612Y Ultrasonic suspending field measurement apparatus |
11/05/2008 | CN101299635A Apparatus and method for discriminating front and back of wide field complete-optical fiber disturbing signal |
11/04/2008 | US7447388 Systems and methods for minimally-invasive optical-acoustic imaging |
11/04/2008 | US7444877 Optical waveguide vibration sensor for use in hearing aid |
11/04/2008 | US7444874 Method of determining damping of an article of manufacture and system for determining damping performance |
10/30/2008 | WO2008086448A3 Photonic crystal structure sensor |
10/29/2008 | EP1984775A1 Method and device for position sensing in an imaging system |
10/29/2008 | CN101294856A Transformer device on-line multi-parameter monitoring device based on optical fiber sensor technology |
10/23/2008 | WO2008126916A1 Sound source separating device and sound source separating method |
10/23/2008 | WO2005031501B1 Sensors and systems for structural health monitoring |
10/22/2008 | CN201138518Y Wireless digital acoustic pressure probe |
10/22/2008 | CN101290245A All-sensing interference -type light time domain reflectometer |
10/22/2008 | CN101290235A Interference -type light time domain reflectometer |
10/21/2008 | US7440644 Optical fibre sensor assembly |
10/21/2008 | US7437960 Device for detecting labels on a carrier material |
10/15/2008 | CN101285847A Temperature insensitive optical fibre grating acceleration sensor |
10/15/2008 | CN101285702A Ultrasound suspending field visualized measurement method and its measuring systems |
10/15/2008 | CN101285701A Optic cable vibration detecting device capable of positioning |
10/15/2008 | CN101285700A Piston type optical fibre grating sonic device |
10/08/2008 | CN101281056A High speed face array CCD shafting twisting vibration decoupling measurement method |
10/02/2008 | US20080239877 Method and apparatus for focused detection of hazardous atmospheric conditions |
10/01/2008 | CN101276499A Intelligent monitoring apparatus of ATM equipment based on all-directional computer vision |
09/30/2008 | US7430039 Sensor |
09/25/2008 | WO2008115308A1 Pre-amplifier for detection lasers within laser ultrasonic inspection systems |
09/25/2008 | US20080229825 Accelerometers |
09/25/2008 | CA2673320A1 Pre-amplifier for detection lasers within laser ultrasonic inspection systems |
09/24/2008 | CN101271020A Wide-field full-optical fiber perturbation sensing system high sensitivity perturbation detecting light path device |
09/23/2008 | US7428054 Micro-optical sensor system for pressure, acceleration, and pressure gradient measurements |
09/18/2008 | WO2008111002A2 Device and a method for monitoring vital body signs |
09/17/2008 | EP1969322A1 A mechanically filtered hydrophone |
09/12/2008 | WO2008107355A2 Physical value sensor comprising an optical fibre that is not sensitive to static values |
09/12/2008 | WO2005031501A3 Sensors and systems for structural health monitoring |
09/11/2008 | US20080218757 Sensor |
09/11/2008 | DE102007029787B3 Verfahren zum Ermitteln eines Berührungspunkts eines Laserstrahls an einer Kante eines Körpers und Laserbearbeitungsmaschine A method of determining a touch point of a laser beam at an edge of a body and laser processing machine |
09/11/2008 | DE102007011964A1 Mustererkennungsverfahren zur Früherkennung von infraschallwirksamen Ereignissen Pattern recognition method for early detection of infrasound effective events |
09/10/2008 | CN101261141A Broad domain all-optical fiber disturbance sensing network system self-adapting disturbance signal processing recognition device |
09/04/2008 | WO2008105974A2 Ultrasonic pressure sensor and method of operating the same |
08/27/2008 | EP1961260A1 Methods, systems and apparatus for measuring acoustic pressure |
08/27/2008 | CN101251392A Optical circuit apparatus for detecting destabilization of complete optical fiber wind-field vibrating sensing network system |
08/26/2008 | CA2335132C Method and apparatus for detecting ultrasonic surface displacements using post-collection optical amplification |
08/21/2008 | DE102007008065A1 Blower vibration determining method for vehicle blower test station, involves fastening blower to retaining part that is buoyantly supported in different directions, and turning on blower at set of operating points |
08/20/2008 | EP1958009A2 High density fiber optic acoustic array |
08/20/2008 | CN201104240Y Semiconductor laser single light source shock excitation measuring device |
08/20/2008 | CN101246044A High-speed area array camera shafting traverse vibration measuring apparatus and method thereof |
08/20/2008 | CN101246025A Wide-field full-optical fiber perturbance locating signal time gain control device |
08/14/2008 | WO2008095659A1 Coagulation system |
08/07/2008 | US20080189665 Surface-acoustic-wave device |
08/06/2008 | CN100408988C Device for measuring amplitude of vibrating tubule end |
07/31/2008 | WO2008090381A2 Detecting particulate contaminants in a fluid |
07/30/2008 | EP1565713B1 OPTICAL HYDROPHONE FOR DETERMINING AN ACOUSTIC PRESSURE WAVE DISTRIBUTION IN A FLUID MEDIUM& x9; |
07/23/2008 | EP1947430A1 Vibration measuring system, vibration measuring method, and computer program |
07/23/2008 | EP1946053A1 A method and system of using odd harmonics for a phase generated carrier modulated optical signal |
07/23/2008 | CN101226078A Method for detecting long-distance linear organization abnormal vibration based on distributed optical fibre sensor |
07/17/2008 | WO2008086448A2 Photonic crystal structure sensor |
07/16/2008 | EP1943527A1 Accelerometer for measuring vibrations with an optical sensor |